CN221504081U - Pilot poppet valve - Google Patents
Pilot poppet valve Download PDFInfo
- Publication number
- CN221504081U CN221504081U CN202323336498.2U CN202323336498U CN221504081U CN 221504081 U CN221504081 U CN 221504081U CN 202323336498 U CN202323336498 U CN 202323336498U CN 221504081 U CN221504081 U CN 221504081U
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- 238000007789 sealing Methods 0.000 claims abstract description 144
- 238000004891 communication Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 11
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Lift Valve (AREA)
Abstract
The embodiment of the utility model discloses a pilot poppet, wherein a top cover and a sealing barrel form a pilot cavity; the end part of the lifting valve rod sequentially passes through the central shaft holes of the sealing cylinder and the top cover, so that the valve seat body of the lifting valve rod is positioned outside the sealing cylinder; the outlet plate is provided with a middle through hole which is fixedly arranged on the bottom end surface of the valve body, one end of the sealing cylinder is installed in the valve body and is fixedly connected with the valve body, the sealing cylinder and the outlet plate form a main flow passage of the valve body, and the valve of the main flow passage is opened and closed by lifting the valve rod; the pilot cavity is provided with a baffle plate assembly fixedly sleeved on the lifting valve rod, a pilot spring is arranged between the top cover and the baffle plate assembly, and the pilot cavity is divided into a spring cavity and a variable sealing cavity through the baffle plate assembly; and the sealing cylinder and the valve body are provided with a pilot runner for communicating the variable sealing cavity with the product. The technical scheme of the utility model solves the problem that high temperature or flammable gas can enter the oil tank through the valve in the product in the existing aircraft electromechanical product.
Description
Technical Field
The utility model relates to the technical field of aviation electromechanics, in particular to a pilot poppet valve.
Background
Valves currently used in aircraft electro-mechanical products are typically controlled by an electric mechanism.
When the valve controlled by the electric mechanism is in an open state during the failure of the aero-mechanical and electric product, the valve will keep an open state, and high temperature or flammable gas caused by the failure of the product will enter the oil tank through the valve in the product; in addition, with valves of the type described above, the backflow of fluid through the product cannot be controlled when the product is open.
Disclosure of utility model
The purpose of the utility model is that: in order to solve the technical problems, the embodiment of the utility model provides a pilot poppet valve to solve the problems that high temperature or flammable gas enters an oil tank through a valve in a product due to the fact that the valve may be in an open state under the condition of product failure in the existing aircraft electrical product.
The technical scheme of the utility model is as follows: the embodiment of the utility model provides a pilot poppet, which comprises: the valve comprises a top cover 1, a sealing cylinder 2, a pilot spring 4, a baffle assembly, a valve body 12, an outlet plate 13 and a lifting valve rod 15;
The top cover 1 is arranged at the opening end of the sealing cylinder 2 in a covering manner to form a pilot cavity; the end part of the lifting valve rod 15 sequentially passes through the central shaft holes of the sealing cylinder 2 and the top cover 1, and the valve seat body of the lifting valve rod 15 is positioned outside the sealing cylinder 2;
The outlet plate 13 is fixedly arranged on the bottom end face of the valve body 12, a middle through hole is formed in the outlet plate 13, one end of the sealing cylinder 2 is arranged in the opening end of the valve body 12 and is fixedly connected with the opening end of the valve body, so that a valve main flow channel is formed through the valve body 12, the sealing cylinder 2 and the outlet plate 13, and a valve seat body of the lifting valve rod 15 is matched with the end face of the outlet plate 13 to form a valve opening of the valve main flow channel;
the pilot cavity is provided with a baffle assembly fixedly sleeved on the lifting valve rod 15, a pilot spring 4 is arranged between the top cover 1 and the baffle assembly, and the pilot cavity is divided into a spring cavity and a variable sealing cavity through the baffle assembly; and the sealing cylinder 2 and the valve body 12 are provided with a pilot runner for communicating the variable sealing cavity with the product.
Alternatively, in the pilot poppet as described above,
The baffle assembly includes: an upper baffle 5, a sliding seal block 6 and a lower baffle 7;
The upper baffle plate 5 and the lower baffle plate 7 are fixedly connected through screws, and a sliding sealing block 6 is sleeved between the combined structure of the upper baffle plate 5 and the lower baffle plate 7 and the inner wall of the sealing cylinder 2 and is used for dividing a pilot cavity into two cavities through an integral baffle plate assembly; the spring cavity provided with the pilot spring 4 is communicated with the atmosphere, and a pilot flow passage for communication is arranged between the baffle assembly and a variable sealing cavity formed at the bottom of the sealing cylinder 2 and a product.
Optionally, in the pilot poppet as described above, further comprising: the air guide plate 8, the screw 9 and the sealing block 16;
An annular groove is formed in the end face of the bottom of the sealing cylinder 2, a sealing block 16 with an annular structure is arranged in the annular groove of the sealing cylinder 2, the inner ring of the sealing block is tightly matched with the lifting valve rod 15 for sealing, and the outer ring of the sealing block is tightly matched with the sealing cylinder 2 for sealing;
The air guide plate 8 is fixedly arranged on the bottom end surface of the sealing cylinder 2 through screws so as to press the sealing block 16 between the air guide plate 8 and the sealing cylinder 2, so that a sealing structure of a variable sealing cavity and a main flow passage of the valve body is formed, and the sealing effect is achieved when the lifting valve rod 15 moves.
Alternatively, in the pilot poppet as described above,
The air guide plate 8 and the sealing cylinder 2 are provided with openings corresponding to the positions, and the sealing cylinder 2 and the valve body 12 are provided with openings corresponding to the positions so as to form a pilot flow passage for communicating the variable sealing cavity with the product.
Alternatively, in the pilot poppet as described above,
The shaft diameter of the rod body of the lifting valve rod 15 is gradually increased from the end part of the rod to the valve seat body, so that the upper baffle 5 and the lower baffle 7 are fixedly arranged in the middle of the rod body through the rod body with a variable cross section when the upper baffle 5 and the lower baffle 7 are arranged on the rod body of the lifting valve rod 15, and the lifting valve rod 15 is driven to synchronously move through the movement of the upper baffle 5, the sliding sealing block 6 and the lower baffle 7.
Alternatively, in the pilot poppet as described above,
The valve seat body bottom of the lifting valve rod 15 is provided with a glue pressing structure for forming a sealing structure on the end face of the outlet plate 13.
Optionally, in the pilot poppet as described above, specifically including: a plurality of outlet plates 13 having different apertures;
For selecting an outlet plate 13 having a pore size corresponding to the flow demand according to the demand of the product for the flow.
The utility model has the beneficial effects that: the embodiment of the utility model provides a pilot poppet valve, on one hand, a valve body 12 and sealing cylinders 2 and 13 form a valve body main flow channel, and the valve body main flow channel controls the opening and closing of the valve by a poppet valve rod 15; on the other hand, a pilot cavity is formed by the top cover 1 and the sealing cylinder 2, the pilot cavity is divided into a spring cavity and a variable sealing cavity by the baffle assembly, a pilot spring 4 is arranged in the spring cavity to provide pilot pressure, the variable sealing cavity is communicated with a product, and when high-pressure fluid flows into the variable sealing cavity and overcomes the force of the pilot spring 4 to push the baffle assembly to move, the lifting valve rod 15 is driven to move synchronously so as to open the valve; in addition, the pilot spring 4 provides a pre-tightening force when the product is closed, so that the product is ensured to be in a normally closed state. The pilot poppet provided by the embodiment of the utility model is suitable for aviation electromechanical equipment with higher safety requirements, can overcome the force of the pilot spring 4 in the pilot cavity under the action of working pressure so as to open the valve, and cannot open the valve under the condition of insufficient pressure; in addition, under the condition that the oil pressure or the air pressure at the upstream of the product is low, the valve opening can be closed under the action of the prior missile spring 4, so that the product is closed; the pilot poppet valve effectively avoids the reverse flow of high-pressure fluid, namely, the condition that high temperature or flammable gas caused by faults can enter an oil tank through products. In addition, the lifting valve rod 15 of the pilot lifting valve is in an extending state when the product works, has a visual indication function, and is convenient for maintenance personnel to overhaul. Further, by providing the pilot poppet with the outlet plates 13 having different apertures, uniformity of the structure of the similar product can be improved, and cost can be reduced.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and do not limit the utility model.
Fig. 1 is a schematic structural diagram of a pilot poppet according to an embodiment of the present utility model.
Reference numerals:
1-top cover; 2-sealing a cylinder; 3-end cover sealing rings; 4-a pilot spring; 5-an upper baffle; 6-sliding sealing blocks; 7-a lower baffle; 8-an air guide plate; 9-a screw; 10-an outer sealing ring; 11-an inner seal ring; 12-valve body; 13-an outlet plate; 14-an outlet seal ring; 15-lifting the valve rod; 16-a sealing block; 17 rod end sealing rings.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be arbitrarily combined with each other.
In the background art, it has been described that a valve is used to realize a switching state in an aircraft electro-mechanical product, and if the valve is in an open state when the product fails, the valve is always kept in an open state, so that high temperature or flammable gas caused by the valve enters an oil tank through the valve in the product. In addition, aircraft electrical products require that the flow of fluid through the product open cannot reverse, but the existing valves described above cannot control the reverse flow.
In view of the above problems, the embodiment of the present utility model provides a pilot poppet, which may be applied to an aircraft electro-mechanical device with a high safety requirement.
The following specific embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
Fig. 1 is a schematic structural diagram of a pilot poppet according to an embodiment of the present utility model. As shown in fig. 1, the components of the pilot poppet provided in the embodiment of the present utility model may include: top cap 1, seal cartridge 2, pilot spring 4, baffle assembly, valve body 12, outlet plate 13, poppet valve stem 15.
In the structure of the pilot poppet as shown in fig. 1, a sealing cylinder 2 and a valve body 12 are both provided in a circular cylindrical structure, and a top cover 1 is arranged at the opening end of the sealing cylinder 2 in a covering manner to form a pilot cavity; the poppet valve stem 15 sequentially passes through the central shaft holes of the sealing cylinder 2 and the top cover 1 with its stem end, and the valve seat body of the poppet valve stem 15 is located outside the sealing cylinder 2.
As shown in fig. 1, in the embodiment of the present utility model, the outlet plate 13 is fixedly installed on the bottom end surface of the valve body 12, and the outlet plate 13 is provided with a middle through hole, one end of the sealing cylinder 2 is installed in the open end of the valve body 12 and fixedly connected, so that a main valve body flow channel is formed by the valve body 12, the sealing cylinder 2 and the outlet plate 13, and a valve opening of the main valve body flow channel is formed by matching the valve seat body of the lifting valve rod 15 with the end surface of the outlet plate 13. It is possible to thereby control the opening and closing of the valve in the main flow passage of the valve body by the axial movement of the poppet valve stem 15.
As shown in fig. 1, a baffle plate assembly fixedly sleeved on a lifting valve rod 15 is arranged in a pilot cavity in the embodiment of the utility model, and a pilot spring 4 is arranged between a top cover 1 and the baffle plate assembly, and the pilot cavity is divided into a spring cavity and a variable sealing cavity by the baffle plate assembly; and the sealing cylinder 2 and the valve body 12 are provided with a pilot runner for communicating the variable sealing cavity with the product.
By adopting the structure of the pilot poppet provided by the embodiment of the utility model, a certain pretightening force is formed on the variable sealing cavity by the pilot spring 4 in the pilot cavity, when high-pressure circulation enters the pilot cavity through the pilot runner and enters the main runner through the inlet on the valve body 12, only the pilot pressure in the pilot cavity controls the baffle assembly to overcome the pretightening force provided by the pilot spring 4, and when the baffle assembly drives the lifting valve rod 15 to move towards one side of the pressing pilot spring 4, at the moment, the valve between the valve seat body of the lifting valve rod 15 and the outlet plate 13 is opened, so that the pilot poppet is in a working state, and the high-pressure circulation circulates through the main runner of the valve body.
It should be noted that, when the pilot poppet provided by the embodiment of the utility model does not work, the pilot poppet is in a normally closed state, and the pilot poppet can only open when a certain pressure is formed in the variable sealing cavity.
In one implementation of an embodiment of the present utility model, as shown in fig. 1, a baffle assembly includes: an upper baffle 5, a sliding seal block 6 and a lower baffle 7.
In the implementation mode, an upper baffle plate 5 and a lower baffle plate 7 are fixedly connected through screws, and a sliding sealing block 6 is sleeved between the combined structure of the upper baffle plate 5 and the lower baffle plate 7 and the inner wall of the sealing cylinder 2 and is used for dividing a pilot cavity into two cavities through an integral baffle plate assembly; the spring cavity provided with the pilot spring 4 is communicated with the atmosphere, and a pilot flow passage for communication is arranged between the baffle assembly and a variable sealing cavity formed at the bottom of the sealing cylinder 2 and a product.
In the pilot cavity formed between the end cover 1 and the sealing cylinder 2, the assembly formed by the upper baffle plate 5, the sliding sealing block 6 and the lower baffle plate 7 can slide in the pilot cavity, so as to drive the lifting valve rod 15 to open and close the valve.
In one implementation of the embodiment of the present utility model, as shown in fig. 1, the pilot poppet is further characterized by: the air guide plate 8, the screw 9 and the sealing block 16;
An annular groove is formed in the end face of the bottom of the sealing cylinder 2, a sealing block 16 with an annular structure is arranged in the annular groove of the sealing cylinder 2, the inner ring of the sealing block is tightly matched with the lifting valve rod 15 for sealing, and the outer ring of the sealing block is tightly matched with the sealing cylinder 2 for sealing.
The air guide plate 8 is fixedly arranged on the bottom end surface of the sealing cylinder 2 through the screw 9 so as to press the sealing block 16 between the air guide plate 8 and the sealing cylinder 2, so that a sealing structure of a variable sealing cavity and a main flow passage of the valve body is formed, and the sealing effect is achieved when the lifting valve rod 15 moves.
In this implementation, as shown in fig. 1, the air guide plate 8 and the sealing cylinder 2 have openings corresponding to positions, and the sealing cylinder 2 and the valve body 12 have openings corresponding to positions, through which a pilot flow channel for communicating the variable sealing chamber with the product, that is, a flow channel corresponding to the pilot inlet in fig. 1, is formed.
In order to realize the fixed installation structure of the lifting valve rod 15 and the baffle assembly, in the implementation of the embodiment of the utility model, the shaft diameter of the rod body of the lifting valve rod 15 is gradually increased from the end part of the rod to the valve seat body, so that when the upper baffle 5 and the lower baffle 7 are installed on the rod body of the lifting valve rod 15, the upper baffle 5 and the lower baffle 7 are fixedly installed in the middle part of the rod body through the rod body with variable cross sections, and the lifting valve rod 15 is driven to synchronously move through the movement of the upper baffle 5, the sliding sealing block 6 and the lower baffle 7.
In one implementation of the embodiment of the present utility model, as shown in fig. 1, the bottom of the valve seat body of the poppet valve stem 15 is provided with a glue pressing structure for forming a sealing structure on the end surface of the outlet plate 13.
Further, the pilot poppet provided by the embodiment of the present utility model may be configured with a plurality of outlet plates 13 having different apertures. Therefore, the outlet plate 13 with the aperture meeting the flow requirement can be selected according to the flow requirement of the product so as to realize the circulation requirements of different products; even if the product used for the pilot poppet is replaced, only the outlet plate 13 is replaced, and the entire structure of the pilot poppet is usable, thereby reducing the cost.
It should be noted that, if the upstream oil pressure or air pressure is lower when the product is operated, the pilot poppet provided by the embodiment of the present utility model may generate reverse flow, and the pilot poppet closes the valve under the force of the pilot spring 4, so as to close the product; that is, the pilot poppet can prevent the high-pressure fluid from flowing reversely.
In addition, when the flow passage in the product is opened, the valve of the pilot poppet is in an open state, and at this time, the poppet stem 15 extends out of the product, unlike the closed state, so that a visual indication effect can be provided for maintenance personnel.
On one hand, the pilot poppet provided by the embodiment of the utility model forms a valve body main flow channel by the valve body 12 and the sealing cylinders 2 and 13, and the valve body main flow channel controls the opening and closing of the valve by the poppet valve rod 15; on the other hand, a pilot cavity is formed by the top cover 1 and the sealing cylinder 2, the pilot cavity is divided into a spring cavity and a variable sealing cavity by the baffle assembly, a pilot spring 4 is arranged in the spring cavity to provide pilot pressure, the variable sealing cavity is communicated with a product, and when high-pressure fluid flows into the variable sealing cavity and overcomes the force of the pilot spring 4 to push the baffle assembly to move, the lifting valve rod 15 is driven to move synchronously so as to open the valve; in addition, the pilot spring 4 provides a pre-tightening force when the product is closed, so that the product is ensured to be in a normally closed state. The pilot poppet provided by the embodiment of the utility model is suitable for aviation electromechanical equipment with higher safety requirements, can overcome the force of the pilot spring 4 in the pilot cavity under the action of working pressure so as to open the valve, and cannot open the valve under the condition of insufficient pressure; in addition, under the condition that the oil pressure or the air pressure at the upstream of the product is low, the valve opening can be closed under the action of the prior missile spring 4, so that the product is closed; the pilot poppet valve effectively avoids the reverse flow of high-pressure fluid, namely, the condition that high temperature or flammable gas caused by faults can enter an oil tank through products. In addition, the lifting valve rod 15 of the pilot lifting valve is in an extending state when the product works, has a visual indication function, and is convenient for maintenance personnel to overhaul. Further, by providing the pilot poppet with the outlet plates 13 having different apertures, uniformity of the structure of the similar product can be improved, and cost can be reduced.
In the pilot poppet provided by the embodiment of the present utility model, in order to ensure the tightness of the structure, a plurality of sealing rings may be assembled, and the portion of the sealing cylinder 2 sleeved in the opening end of the valve body 12 is provided with an outer sealing ring 10 and an inner sealing ring 11; an outlet sealing ring 14 is arranged between the outlet plate 13 and the valve body 12; an end cover sealing ring 3 is arranged at the position where the top cover 1 and the sealing cylinder 2 are matched and installed; a rod end seal ring 17 is provided between the rod end of the poppet valve rod 15 and the seal cylinder 2.
The following is a schematic illustration of the implementation of a pilot poppet provided by an embodiment of the present utility model by way of a specific example.
Referring to fig. 1, this embodiment provides a pilot poppet in which a valve body 12, a seal cylinder 2 and an outlet plate 13 are formed to form a main flow passage of the valve body, the valve opening and closing is controlled by a poppet stem 15, and the bottom of the poppet stem 15 is designed as a rubber-pressing structure to perform a sealing function when closed. The outlet plate 13 is arranged on the bottom end surface of the valve body 12 through screws, and the flow requirements of different products can be matched by replacing the outlet plate 13 with different apertures.
The top cover 1 and the sealing cylinder 2 form a pilot cavity, the upper baffle 5 and the lower baffle 7 are connected through screws, a sliding sealing block 6 is clamped between the combined structure of the upper baffle 5 and the lower baffle 7 and the inner wall surface of the sealing cylinder 2, and the formed assembly is fixedly arranged on a rod body of the lifting valve rod 15 to divide the pilot cavity into a left part and a right part. A pilot spring 4 is arranged on the left side, one end of the pilot spring 4 is propped against the inner end face of the end cover 1, and the other end is propped against the end face of the upper baffle 5; the left cavity of the pilot cavity is communicated with the atmosphere. The right side cavity of the pilot cavity is a variable sealing cavity, wherein the air guide plate 8 is fixedly arranged on the sealing cylinder 2 through the screw 9, and the sealing block 16 is clamped in the middle, so that the sealing effect is realized when the lifting valve rod 15 moves. The air guide plate 8 and the seal cylinder 2 have openings corresponding in position so as to enter the variable seal chamber by the pilot pressure at the pilot inlet (the pilot pressure generated by the high-pressure fluid or the high-pressure gas).
The working principle of the pilot poppet valve applied to products is as follows:
When the product is not in operation, the pilot spring 4 provides a pre-tightening force to ensure that the poppet valve stem 15 is in a closed state.
When the product works, high-pressure fluid is arranged at the inlet and the pilot inlet, the fluid passing through the pilot inlet enters the variable sealing cavity, and the pressure acting on the lower baffle 7 overcomes the spring force of the pilot spring 4 and drives the lifting valve rod 15 to move leftwards, so that the opening of the product is realized.
If the upstream air pressure is lower during the operation of the product, and the reverse flow is possibly generated, the lift valve rod 15 is pushed to move rightwards under the force of the pilot lift valve spring 4, and the product is closed when the product is pressed on the outlet plate 13 to realize sealing; therefore, the reverse flow of the high-pressure fluid can be effectively avoided by adopting the pilot valve.
In addition, when the product is opened, the poppet valve stem 15 extends out of the product, unlike the closed condition, providing a visual indication to maintenance personnel.
Although the embodiments of the present utility model are described above, the present utility model is not limited to the embodiments which are used for understanding the present utility model. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is to be determined by the appended claims.
Claims (7)
1. A pilot poppet, comprising: the valve comprises a top cover (1), a sealing cylinder (2), a pilot spring (4), a baffle assembly, a valve body (12), an outlet plate (13) and a lifting valve rod (15);
The top cover (1) is arranged at the opening end of the sealing cylinder (2) in a covering manner to form a pilot cavity; the end part of the lifting valve rod (15) sequentially passes through the central shaft holes of the sealing cylinder (2) and the top cover (1), and the valve seat body of the lifting valve rod (15) is positioned outside the sealing cylinder (2);
The outlet plate (13) is fixedly arranged on the bottom end face of the valve body (12), the outlet plate (13) is provided with a middle through hole, one end of the sealing cylinder (2) is arranged in the opening end of the valve body (12) and is fixedly connected with the opening end of the valve body, so that a main flow channel of the valve body is formed through the valve body (12), the sealing cylinder (2) and the outlet plate (13), and a valve opening of the main flow channel of the valve body is formed through the matching of the valve seat body of the lifting valve rod (15) and the end face of the outlet plate (13);
the pilot cavity is internally provided with a baffle assembly fixedly sleeved on the lifting valve rod (15), a pilot spring (4) is arranged between the top cover (1) and the baffle assembly, and the pilot cavity is divided into a spring cavity and a variable sealing cavity through the baffle assembly; and the sealing cylinder (2) and the valve body (12) are provided with a pilot runner for communicating the variable sealing cavity with the product.
2. The pilot poppet as defined in claim 1, wherein,
The baffle assembly includes: an upper baffle (5), a sliding sealing block (6) and a lower baffle (7);
The upper baffle (5) is fixedly connected with the lower baffle (7) through screws, and a sliding sealing block (6) is sleeved between the combined structure of the upper baffle (5) and the lower baffle (7) and the inner wall of the sealing cylinder (2) and is used for dividing a pilot cavity into two cavities through an integral baffle assembly; the spring cavity provided with the pilot spring (4) is communicated with the atmosphere, and a pilot flow passage for communication is arranged between the baffle assembly and a product and between a variable sealing cavity formed at the bottom of the sealing cylinder (2) and the product.
3. The pilot poppet of claim 2, further comprising: the air guide plate (8), the screw (9) and the sealing block (16);
An annular groove is formed in the end face of the bottom of the sealing cylinder (2), a sealing block (16) with an annular structure is arranged in the annular groove of the sealing cylinder (2), the inner ring of the sealing block is tightly matched and sealed with the lifting valve rod (15), and the outer ring of the sealing block is tightly matched and sealed with the sealing cylinder (2);
The air guide plate (8) is fixedly arranged on the bottom end face of the sealing cylinder (2) through screws so as to press the sealing block (16) between the air guide plate (8) and the sealing cylinder (2) to form a sealing structure of a variable sealing cavity and a valve body main runner, and the sealing structure plays a role in sealing when the lifting valve rod (15) moves.
4. The pilot poppet as claimed in claim 3, wherein,
The air guide plate (8) and the sealing cylinder (2) are provided with openings corresponding to the positions, and the sealing cylinder (2) and the valve body (12) are provided with openings corresponding to the positions so as to form a pilot flow passage for communicating the variable sealing cavity with a product.
5. The pilot poppet as defined in any one of claims 1-4, wherein,
The diameter of the rod body of the lifting valve rod (15) is gradually increased from the end part of the rod to the valve seat body, so that the upper baffle (5) and the lower baffle (7) are fixedly installed in the middle of the rod body through the rod body with a variable cross section when the upper baffle (5) and the lower baffle (7) are installed on the rod body of the lifting valve rod (15), and the lifting valve rod (15) is driven to synchronously move through the movement of the upper baffle (5), the sliding sealing block (6) and the lower baffle (7).
6. The pilot poppet as defined in any one of claims 1-4, wherein,
The valve seat bottom of the lifting valve rod (15) is provided with a glue pressing structure for forming a sealing structure on the end face of the outlet plate (13).
7. The pilot poppet as defined in any one of claims 1 to 4, in particular comprising: a plurality of outlet plates (13) having different apertures;
an outlet plate (13) for selecting an aperture corresponding to the flow demand according to the demand of the product for the flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323336498.2U CN221504081U (en) | 2023-12-07 | 2023-12-07 | Pilot poppet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323336498.2U CN221504081U (en) | 2023-12-07 | 2023-12-07 | Pilot poppet valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221504081U true CN221504081U (en) | 2024-08-09 |
Family
ID=92131507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323336498.2U Active CN221504081U (en) | 2023-12-07 | 2023-12-07 | Pilot poppet valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221504081U (en) |
-
2023
- 2023-12-07 CN CN202323336498.2U patent/CN221504081U/en active Active
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