JPH0719371A - Ball tap - Google Patents

Abstract

PURPOSE:To carry out complete water stopping by discharging a fixed amount of discharged water for noise suppression regardless of the magnitude of the primary side water pressure, and stopping water at the primary side feed water pressure. CONSTITUTION:A governor valve 5 is mounted on the secondary side 101 of a main valve 4 which opens and closes the primary side 100 and the secondary side 101, and a pressure back chamber 6 which communicates with the downstream side of the governor valve 5 through a pilot valve 9 which opens and closes with the vertical movement, of a float 11 is communicated with the primary side 100 through a small flow passage 8 and is mounted, facing the governor valve 5 and putting the main valve 4 between them. The pressure back chamber 6, a main valve body 4a and a governor valve body 5a are mounted on a line. The primary pressure receiving part 6a' of the pressure back chamber 6 whose area is balanced with the water passing area of a governor valve seat 5b is disposed on the primary side, facing the governor valve 5, and the governor valve body 5a' is disposed on the downstream side from the governor valve seat, 5b. A throttle valve 13 which reduces water pressure to the governor valve body 5a is disposed on the downstream side of the governor valve seat, 5b, and a forcing means 7 which forces to the secondary side 101 is mounted onto the pressure back chamber 6, and by means of the energizing force of the forcing means 7, the valve opening of the governor valve 5 is reduced if the primary feed water pressure is high.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball tap used in a water tank for cleaning toilet bowls and the like.

[0002]

2. Description of the Related Art Conventionally, ball taps have been made into Japanese Utility Model Sho 59-26138.
Although various structures are known, including Japanese Patent Publication, basically, as shown in FIG. 2, a piston-shaped valve body 201 arranged on the secondary side of the valve seat 200 is installed in a tank 202. The structure is such that the buoyancy of the float 203 that moves up and down as the water level rises and lowers moves the valve 300 up and down to open and close the valve 300, so that the valve opening is constant regardless of the primary side water supply pressure. The side water supply pressure directly acts as a force for urging the valve body in the valve opening direction.

Therefore, in the conventional ball tap, the higher the primary-side water supply pressure is, the more instantaneously the internal flow rate increases.
The buoyancy of the float is transmitted to the valve body by linking the buoyancy of the float to the valve body via a link and a lever in order to obtain a water stopping force against the primary side water supply pressure.

[0004]

However, as described above, since the valve opening is constant, when the primary side water supply pressure is high and the flow rate is high, the sound of tapping on the water storage surface and the sound of water supply become loud, and the water supply is stopped. A sudden closing of the valve sometimes causes throttling noise or water hammer, which is very annoying. Moreover, since the valve body receives the primary side water supply pressure as it is, a large buoyancy force corresponding to it is required for the float that operates the valve body when the primary side water supply pressure is high. As compared with the case where the water pressure is low, the adjustment work must be performed on site so that the valve element starts to operate by the float when the tank liquid level is low.

The present invention has been made in view of the above-mentioned conventional circumstances, and an object of the present invention is to make it possible to quantitatively discharge water regardless of whether the primary side water supply pressure is high or low, and to reduce the noise. The purpose is to provide a ball tap that ensures water stoppage by stopping the water stoppage.

[0006]

[Means for Achieving the Object] The technical means taken to achieve the above-mentioned object is to provide a governor valve on the secondary side of the main valve that opens and closes the primary side and the secondary side, and to raise and lower the float. A pressure back chamber, which is connected to the downstream side of the governor valve via a pilot valve that opens and closes dynamically, is provided on the primary side through a small flow path, and the main valve is sandwiched between the pressure back chamber and the governor valve. Chamber, main valve body and governor valve body are connected in series, and the primary pressure receiving part, which has an area commensurate with the water passage area of the governor valve seat, is arranged on the primary side facing the governor valve, and the governor valve body is used as the governor valve. It is arranged downstream with respect to the seat, the throttle part for reducing the water pressure to the governor valve body is provided on the upstream side of the governor valve seat, and the biasing means for biasing the secondary side is provided on the pressure back chamber. That is the summary.

[0007]

According to the above technical means, the water passing area of the governor valve seat and the pressure receiving area of the primary side pressure receiving portion are in a balanced relationship, so that the water pressure applied to the governor valve body is not affected by the governor valve seat upstream side. Due to the reduced pressure in the downstream depressurized space formed in 1, the low-pressure phenomenon that is almost proportional to the primary-side water supply pressure applied to the primary-side pressure receiving portion occurs. Therefore, when the primary side water supply pressure is high, there is a large differential pressure between the water pressure applied to the governor valve body and the primary side water supply pressure applied to the pressure receiving surface of the primary side pressure receiving portion, so the urging force adjusted to the desired urging force is applied. The balance of the force with the means is stable when the valve opening of the governor is narrowed, and it is possible to discharge the same amount of water as the water discharge amount in the normal case where the primary side water supply pressure is low. Further, when the water is stopped, the pilot valve is closed by receiving the floating force of the float, so that the pressure back chamber expands in volume due to the primary side water supply pressure and the urging force of the urging means, and is pushed accordingly. The main valve body sits on the main valve seat and closes.

[0008]

According to the present invention, the valve opening of the governor valve is reduced when the primary side water supply pressure is high, so that the same amount of water is discharged as when the primary side water supply pressure is low. Will be possible. Therefore, even when the water supply pressure on the primary side is high, the instantaneous flow rate does not increase, and the tapping sound with the water storage surface, the water supply sound flowing inside, the squeezing sound when the water is stopped, and the jarring sound of the water hammer etc. are wiped out. Therefore, it is possible to reduce the noise without separately using the noise reduction bush or the like. Further, unlike the one that stops the water against the primary side water supply pressure by the floating force of the float, the water is stopped by the primary side water supply pressure and the urging force of the urging means. You can stop the water.

[0009]

Embodiments of the present invention will now be described with reference to the drawings. In FIG. 1, A is a ball tap body, which is an inlet 1a.
Is formed by connecting upper, middle, and lower three divided bodies 3a, 3b, 3c between an inflow pipe 1 having a discharge port 2 and a discharge pipe 2 having a discharge port 2a. The internal flow path 3d in the main body A communicating with the end of 1 and the start end of the water discharge pipe 2 is a vertical flow path (described later with reference numeral 3d).

The vertical flow path 3d of the ball tap body A
, A main valve 4 is arranged in the middle part, and a governor valve 5 is arranged in the lower part. Further, a pressure back chamber 6 is provided in the upper part so as to face the bottom part. , And the governor valve 5 are in a direct relationship.

The governor valve 5 is a truncated cone-shaped governor valve body 5a.
Connecting rod 5c with male screw portion 5c 'on the outer circumference of the tip on the truncated surface of
Is integrally molded, and the male screw portion 5c 'of the connecting shaft 5c is connected to the bottom portion of the pressure back chamber 6, and the upper inclined seat surface 5
A governor valve seat 5b is provided upstream of the valve body 5a so that a'corresponds to it.

The main valve 4 is composed of a main valve body 4a fixed to a middle portion of the connecting rod 5c and a main valve seat 4b formed downstream of the main valve body 4a.

The governor valve seat 5b of the governor valve 5 and the main valve 4
The main valve seat 4b of the split body 3a, 3 so as to traverse the vertical flow path 3d.
Among the b and 3c, the disk body 5d and the hat-shaped body 4c, which are arranged by sandwiching the peripheral end portion between the lower two divided bodies 3b and 3c in a watertight manner, are formed respectively.

The disk body 5d is arranged downstream of the hat-shaped body 4c, and a valve hole 5d 'is opened in a donut shape around the connecting rod 5c penetrating the center and the lower edge of the valve hole 5d' is formed. With governor seat 5b
Is formed.

The hat-shaped body 4c is arranged upstream of the disc body 5d and downstream of the main valve body 4a, and the upper surface except for the donut-shaped valve hole 4c 'around the connecting rod 5c penetrating the center of the upper surface. The peripheral end portion is a downwardly inclined surface, and the inclined surface forms the main valve seat 4b.

The pressure back chamber 6 has a bottom portion facing the vertical flow path 3d and facing the governor valve body 5a, and is formed of a diaphragm 6a. The bottom portion of the diaphragm 6a, that is, the upper divided body 3a is provided with a concave shape. It is communicated with the primary side 100 upstream of the vertical flow path 3d through the small flow path 8. The pressure back chamber 6 is provided with a screw hole in the upper wall portion of the divided body 3a facing the diaphragm 6a.
6d and a lid body 6e which is screwed into the screw hole 6d so as to be able to move forward and backward, a receiving seat 6b is provided on the inner surface of the diaphragm 6a corresponding to the lid body 6e, and a diaphragm 6a and a receiving seat 6b are provided above it.
Nuts 6c that are fastened to the male screw portions 5c 'that are respectively inserted, and the diaphragm 6a is clamped by the main valve body 4a and the receiving seat 6b by the fastening force of the nut member 6c, and is hydraulically actuated. The volume is variable.

Further, the diaphragm 6a constituting the bottom of the pressure back chamber 6 has an area of the primary side pressure receiving portion 6a 'which is equal to the area of the water passage of the governor valve seat 5b, that is, the area of the valve hole 5d'. I have to.

A pilot having a pilot valve 9 in the middle of the connecting rod 5c and the governor valve body 5a and connecting the inside of the pressure back chamber 6 and the further downstream of the valve body 5a via the pilot valve 9 The flow path 9a is opened.

The pilot valve body 9b constituting the pilot valve 9 has a cylindrical wall 10 projecting from the bottom wall of the divided body 3c forming the lower part of the vertical flow passage 3d so as to face the pilot flow passage 9a. On the upper surface, the valve portion at the tip is placed in a state that it is always inserted into the pilot flow passage 9a, and the rod 12 connected to the float 11 and fitted to the tubular wall 10 so as to be vertically movable is moved upward by its upper end. When the water is stopped, the pilot valve hole 9c in the middle of the pilot flow passage 9a is closed.

A diaphragm is provided upstream of the governor valve seat 5b.
A throttle portion 13 for reducing the water pressure applied to the governor valve body 5a with respect to the primary side water supply pressure having the pressure receiving surface 6a is formed.

The narrowed portion 13 is formed integrally with a disk portion 13a having a sliding cylinder seat 13b of the connecting rod 5c as a center and integrally formed immediately below the upper surface of the hat-shaped body 4c. It is formed by opening a plurality of throttle holes 13c at appropriate intervals, and by the action of the throttle holes 13c, a valve hole is formed between the governor valve seat 5b, that is, the valve hole 5d 'and the throttle hole 13c. A decompression space 14 is formed to expand the flow passage area to the same water passing area as 5d '.

The throttle portion 13 makes the water passing area of the governor valve seat 5b equal to the pressure receiving area of the diaphragm 6a and the water pressure applied to the governor valve body 5a and the primary side water supply pressure applied to the primary side pressure receiving portion 6a '. Assuming that the conditions have been set in advance so that and become a canceling relationship, the governor valve body 5a is subjected to the primary side water pressure applied to the primary side pressure receiving portion 6a 'of the diaphragm 6a in the relation of the law of energy conservation. There is a function of reducing the actual water pressure in the pressure reducing space 14 on the downstream side in a substantially proportional manner, and an urging means 7 for adjusting the valve opening of the governor valve 5 is provided in the pressure back chamber 6 against the pressure difference. There is.

The urging means 7 is an elastic repellant strip, and the pressure back chamber 6
The pressure back chamber 6 is constantly urged toward the secondary side 101 by being elastically mounted between the receiving seat 6b and the lid 6e. This biasing means 7
The urging force can be freely changed by advancing and retracting the lid 6e with respect to the screw hole 6d.

Therefore, such a ball tap is a diaphragm.
There is no sliding seal for 6a operation, and no sliding seal for governor valve body 5a is added. Therefore, when the primary side water supply pressure is high and the instantaneous flow rate increases, the urging force of the urging means 7 set to the desired force is equal to the primary side water supply pressure applied to the primary side pressure receiving portion 6a ′.
Since the differential pressure between the governor valve body 5a and the actual water pressure is large, the flow rate may be reduced to a desired amount so that the governor valve body 5a is in close proximity to the governor valve seat 5b so as to balance with the differential pressure. it can. In addition, the rod 12 that moves upward with water discharge
When the pilot valve body 9b lifted up by the valve closes the pilot valve hole 9c, the water discharge from inside the pressure back chamber 6 stops, so that it flows from the primary side 100 into the pressure back chamber 6 through the small flow passage 8. Then, the pressure back chamber 6 expands its volume, and the urging force of the urging means 7 also works to lower the main valve body 4a and seat it on the main valve seat 4b to stop water.

Reference numeral 15 is a ball valve, which is provided in the middle of the small flow path 8 and has a specific gravity of water in a chamber 16 in which the outlet 16a and the inlet 16b are directly connected to the same flow path upstream and downstream. A primary side to the pressure back chamber 6 as a Hopper-shaped surface 16a 'which accommodates a spherical valve body 16c having a slightly larger specific gravity than the spherical valve body 16c and has a rough inner surface of the chamber 16 around the outlet 16a corresponding to the spherical valve body 16c. The water supply from 100 is gradually performed between the hopper-shaped surface 16a 'and the spherical valve body 16c to prevent water hammer etc. from occurring when the main valve 4 is closed and to adhere to the inner peripheral surface of the outlet 16a. We also try to prevent the ingress of scales, which causes clogging.

Further, in this embodiment, the primary side pressure receiving portion 6a 'of the pressure back chamber 6 is composed of a diaphragm, but it is directly connected to the upper portion of the connecting rod 5c and has a piston having a Y-shaped packing on its sliding surface, The pressure receiving surface may be formed by the bellows, and the bellows may also serve as the biasing means. In this case, it can be achieved by designing the urging force to a desired value with respect to the differential pressure between the water pressure applied to the governor valve body and the primary side water supply pressure applied to the pressure receiving surface.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a usage state.

FIG. 2 is a sectional view showing an example of a conventional ball tap.

[Explanation of symbols]

A Ball tap body 4 Main valve 5 Governor valve 6 Pressure back chamber 11 Float 100 Primary side 101 Secondary side 9 Pilot valve 4a Main valve body 5a Governor valve body 5b Governor valve seat 4b Main valve seat 7 Energizing means 13 Throttling part 6a ' Primary pressure receiving part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kinya Arita 2-8-1, Motomura, Chigasaki-shi, Kanagawa Prefecture Tochiki Co., Ltd. Chigasaki Plant (72) Inventor Yoshinobu Uchimura 2-chome, Chikasaki, Kanagawa Prefecture No. 1 Tochi Kikai Co., Ltd. Chigasaki Plant (72) Inventor Junji Tanaka 2-8-1, Motomura, Chigasaki City, Kanagawa Prefecture Toho Kikai Co., Ltd. Chigasaki Plant, (72) Inventor Takafumi Oshima 2 Motomura, Chigasaki City, Kanagawa Prefecture No. 8 No. 1 Tochi Kikai Co., Ltd. Chigasaki factory

Claims (1)

[Claims] Claims: 1. A governor valve is provided on the secondary side of a main valve that opens and closes the primary side and the secondary side, and a pressure that communicates further downstream of the governor valve via a pilot valve that opens and closes by vertical movement of a float. The back chamber is provided to communicate with the primary side through a small flow path, and the main valve is provided so as to face the governor valve, and the pressure back chamber, the main valve body, and the governor valve body are coaxially connected to each other to form a governor. The primary pressure receiving part, which has an area commensurate with the water flow area of the valve seat, is placed on the primary side facing the governor valve, and the governor valve element is placed downstream of the governor valve seat. A ball tap characterized in that a throttle portion for reducing water pressure to the governor valve body is provided on the side, and a biasing means for biasing to the secondary side is provided on the pressure back chamber.