CN218207996U - High-pressure overflow valve - Google Patents

Abstract

The utility model relates to a high-pressure overflow valve, including the valve body, the valve body is connected with the disk seat including the valve barrel, and the one end of valve barrel is provided with conduction mouth and a plurality of overflow mouth on the disk seat, and the other end of valve barrel is connected with the swivel nut, constitutes the pressure regulating passageway in the valve barrel, is provided with the valve rod in the pressure regulating passageway, and the valve rod is connected with the case through elastic component, and when being in acquiescence state, the case shutoff is on conduction mouth and overflow mouth. Therefore, the valve sleeve and the valve seat are of a nested structure, the valve sleeve and the valve seat integrally have better air tightness, and leakage does not occur under normal pressure values during use due to the cooperation of the main sealing assembly and the auxiliary sealing assembly. Under the cooperation of the valve rod and the elastic assembly, the valve core can be properly retracted when being subjected to extreme pressure and flows out of the overflow channel, so that the overflow guide of fluid is realized. The whole structure is simple, the fluid impact of high pressure can be borne, the overflow is realized, and the reset and blocking cannot be caused.

Description

High-pressure overflow valve

Technical Field

The utility model relates to a valve gear especially relates to a high-pressure overflow valve.

Background

The relief valve is generally referred to as a safety relief valve. The safety overflow valve plays a safety protection role in the system. When the system pressure exceeds the specified value, the safety valve is opened, and a part of gas in the system is discharged into the atmosphere, so that the system pressure does not exceed the allowable value, and the system is ensured not to have accidents due to overhigh pressure.

However, the internal structure of the conventional relief valve is too complicated, and the conventional relief valve is easily damaged by impact when subjected to a sudden high-pressure state. Meanwhile, the valve core can be reset wrongly and overflow can occur due to repeated high-pressure impact.

In view of the above-mentioned drawbacks, the present designer is actively making research and innovation to create a high-pressure relief valve, so that the high-pressure relief valve has industrial value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a high-pressure overflow valve.

The utility model discloses a high-pressure overflow valve, including the valve body, wherein: the valve body is including the valve barrel, the one end of valve barrel is connected with the disk seat, be provided with conduction port and a plurality of overflow mouth on the disk seat, the other end of valve barrel is connected with the swivel nut, constitute the pressure regulating passageway in the valve barrel, be provided with the valve rod in the pressure regulating passageway, the valve rod is connected with the case through elastic component, and when being in acquiescence state, the case shutoff is on conduction port and overflow mouth.

Further, in the high-pressure overflow valve, the elastic component comprises a spring seat sleeved on the valve rod, a spring component is arranged on the spring seat, the spring component is sleeved on the valve rod, the bottom of the spring component is in contact with the spring seat, and the top of the spring component is in contact with the valve core.

Furthermore, in the above high-pressure overflow valve, the valve core includes a core body, a contact cavity is provided at the tail end of the core body, and a contact block is provided at the head of the valve rod and connected to the contact cavity.

Further, the high-pressure relief valve described above, wherein the leading end of the core body is provided with a tapered guide surface.

Further, in the above high-pressure relief valve, a contact guide ring is provided in the conduction port.

Furthermore, in the high-pressure overflow valve, a main sealing assembly is arranged on a contact surface of the valve sleeve and the valve rod, an auxiliary sealing assembly is arranged on a contact surface of the valve sleeve and the screw sleeve, and the main sealing assembly and the auxiliary sealing assembly are both O-shaped sealing rings.

Still further, in the above high-pressure overflow valve, an arc chamfer is provided at the edge of the conduction opening.

Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage:

1. the valve sleeve and the valve seat are of a nested structure, the valve sleeve and the valve seat have good air tightness integrally, and leakage does not occur under a normal pressure value during use due to the cooperation of the main sealing assembly and the auxiliary sealing assembly.

2. Under the matching of the valve rod and the elastic component, the valve core can be properly retracted when being subjected to extreme pressure and flows out of the overflow channel, so that the overflow guide of fluid is realized.

3. The whole structure is simple, the fluid impact of high pressure can be borne, the overflow is realized, and the reset and blocking cannot be caused.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a high-pressure relief valve.

The meanings of the reference symbols in the drawings are as follows.

1. Valve sleeve 2 valve seat

3. Conduction opening 4 overflow port

5. Screw sleeve 6 valve rod

7. Valve core 8 spring seat

9. Spring assembly 10 contact chamber

11. Primary seal assembly 12 and secondary seal assembly

13. Contact guiding ring

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The high-pressure relief valve of fig. 1 includes a valve body, which is distinguished in that: the valve body comprises a valve sleeve 1, one end of the valve sleeve 1 is connected with a valve seat 2, a conduction port 3 and a plurality of overflow ports 4 are arranged on the valve seat 2, and the other end of the valve sleeve 1 is connected with a threaded sleeve 5. Therefore, fluid is conveniently led in from the conduction port 3, and the subsequent valve core 7 is enabled to sense the current flow and pressure. Meanwhile, a pressure regulating channel is formed in the valve sleeve 1, a valve rod 6 is arranged in the pressure regulating channel, and the valve rod 6 is connected with a valve core 7 through an elastic component. When the valve core is in a default state, the valve core 7 is blocked on the conduction port 3 and the overflow port 4. In this way, the closing standby of the relief valve can be realized under normal pressure. When subjected to high pressure impact, the valve core 7 is compressed and advanced towards the valve seat 2 under the guide of the valve rod 6 and against the pressure of the elastic component. At this time, the overflow port 4 enters a conduction state. Whereby the fluid is discharged through the overflow apertures.

Combine the utility model discloses an embodiment of preferred sees that elastic component establishes spring holder 8 at valve rod 6 including the cover, is provided with spring unit 9 on the spring holder 8. Considering the stability of operation, spring assembly 9 overlaps on valve rod 6, and spring assembly 9's bottom contacts with spring holder 8, and spring assembly 9's top contacts with case 7. Therefore, the displacement of the valve core 7 can be controlled by the compression and rebound reset of the spring assembly 9, and the on-off of the overflow is realized.

Further, the adopted valve core 7 comprises a core body, a contact cavity 10 is arranged at the tail end of the core body, a contact block is arranged at the head of the valve rod 6, and the contact block is connected into the contact cavity 10. After the assembly is finished, a proper stroke interval is arranged between the contact block and the contact cavity 10, so that the valve core 7 is pressed to retract and then is contacted with the contact block. Meanwhile, in order to better block the conduction port 3 when the valve core 7 is in a default state, a tapered guide surface is arranged at the front end of the core body. Thus, the occurrence of a joint gap can be avoided, and the normal air tightness is satisfied.

In view of practical implementation, the present invention provides a contact guiding ring 13 in the conduction opening 3. Therefore, the valve core 7 can better block the conduction port 3 in a default state, and accidental overflow caused by normal fluid impact is avoided.

Further see again, in order to possess the airtight effect of preferred, can let the fluid arrange outward from overflow mouth 4 according to the mode of predetermineeing when realizing overflow control, can not follow other joint positions and appear the seepage, the utility model discloses be provided with main seal assembly 11 at the contact surface of valve barrel 1 with valve rod 6, valve barrel 1 is provided with vice seal assembly 12 with the contact surface of swivel nut 5. For convenience of implementation, the primary seal assembly 11 and the secondary seal assembly 12 are both O-rings.

Simultaneously, can not be because of there being sharp-pointed part fish tail assembly personnel in order when linking up with conventional pipeline, the utility model discloses be provided with the circular arc chamfer at the 3 edges of conduction hole.

The working principle of the utility model is as follows:

during daily use, the valve core 7 is blocked on the conduction port 3 and the overflow port 4. In this way, closure can be achieved at normal pressure with fluid flowing between the lines in normal programming. When the pressure in the pipeline breaks through the critical point and reaches the state needing overflowing, the pressure of the fluid enables the valve core 7 to overcome the pressure of the elastic component under the guide of the valve rod 6, and the valve core is compressed and moves forwards towards the valve seat 2. At this moment, the stroke clearance between contact piece and the contact chamber 10 disappears, and the fluid in the pipeline can pass through the utility model discloses a guide flows in from conduction mouth 3, arranges outside through overflow mouth 4 and arrives corresponding overflow pipeline in, realizes the pressure balance in the pipeline.

Through foretell expression of characters and combination of the attached drawing can be seen, adopt the utility model discloses afterwards, possess following advantage:

1. the valve sleeve and the valve seat are of a nested structure, the valve sleeve and the valve seat integrally have good air tightness, and leakage does not occur under normal pressure values during use due to the cooperation of the main sealing assembly and the auxiliary sealing assembly.

2. Under the matching of the valve rod and the elastic component, the valve core can be properly retracted when being subjected to extreme pressure and flows out of the overflow channel, so that the overflow guide of fluid is realized.

3. The whole structure is simple, the fluid impact of high pressure can be borne, the overflow is realized, and the reset and blocking cannot be caused.

Furthermore, the indication directions or positional relationships described in the present invention are directions or positional relationships based on the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the indicated device or structure must have a specific direction or operate in a specific directional configuration, and therefore, should not be construed as limiting the present invention.

The terms "primary" and "secondary" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "primary" or "secondary" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Also, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "disposed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other or mutually interacted. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. And it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the device or component so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

The above description is only a preferred embodiment of the present invention, and should not be used to limit the present invention, it should be noted that, for those skilled in the art, without departing from the technical principle of the present invention, a plurality of improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (7)

1. High pressure overflow valve, including the valve body, its characterized in that: the valve body is including the valve barrel, the one end of valve barrel is connected with the disk seat, be provided with conduction port and a plurality of overflow mouth on the disk seat, the other end of valve barrel is connected with the swivel nut, constitute the pressure regulating passageway in the valve barrel, be provided with the valve rod in the pressure regulating passageway, the valve rod is connected with the case through elastic component, and when being in acquiescence state, the case shutoff is on conduction port and overflow mouth.

2. The high-pressure relief valve according to claim 1, characterized in that: the elastic assembly comprises a spring seat sleeved on the valve rod, a spring assembly is arranged on the spring seat, the spring assembly is sleeved on the valve rod, the bottom of the spring assembly is in contact with the spring seat, and the top of the spring assembly is in contact with the valve core.

3. The high-pressure relief valve according to claim 1, characterized in that: the valve core comprises a core body, a contact cavity is arranged at the tail end of the core body, a contact block is arranged at the head of the valve rod, and the contact block is connected into the contact cavity.

4. The high-pressure relief valve according to claim 3, characterized in that: the front end of the core body is provided with a tapered guide surface.

5. The high-pressure relief valve according to claim 1, characterized in that: a contact guide ring is arranged in the conduction opening.

6. The high-pressure relief valve according to claim 1, characterized in that: the valve sleeve is characterized in that a main sealing assembly is arranged on a contact surface of the valve sleeve and the valve rod, an auxiliary sealing assembly is arranged on a contact surface of the valve sleeve and the screw sleeve, and the main sealing assembly and the auxiliary sealing assembly are O-shaped sealing rings.

7. The high-pressure relief valve according to claim 1, characterized in that: and an arc chamfer is arranged at the edge of the conduction opening.

Images