Self-operated pressure regulating valve

Abstract

The utility model discloses a self-operated pressure regulating valve, and particularly relates to the technical field of regulating valves, which comprises a valve body, a pressure pipe and a pressure box, and is characterized in that a valve seat is fixed at the central position in the valve body, water through holes are arranged on two sides of the valve seat, a valve core is arranged on the inner side of the valve seat, and the valve core is connected with the pressure box. A diaphragm is installed in the pressure box, the top end of the connecting rod extends into the pressure box, and an observation assembly is arranged at the top end of the outer side wall of the connecting rod. The observation platform is arranged, the linkage ring is arranged on the outer side of the connecting rod in a sleeving mode and is fixed through tightening of the fixing bolt, the linkage plate at the side end of the linkage ring extends into the sliding groove in the side end of the pressure box and is connected with the observation platform on the outer side, and when the diaphragm is pressed and drives the connecting rod to move downwards, under the assistance of the linkage ring, the observation platform is fixed. When the diaphragm rotates, the linkage plate and the observation platform can be driven to move downwards along the sliding groove, so that the pressed state of the diaphragm is fed back, and the feedback observation function of rotation of the diaphragm of the self-operated pressure regulating valve is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of governing valve, concretely is a self force type pressure governing valve. BACKGROUND

[0002] Self force type governing valve is also called self force type control valve, is a kind of self force type governing valve, self force type pressure governing valve, self force type pressure difference governing valve, self force type temperature governing valve, self force type flow governing valve, and it is driven valve door automatic work by the pressure and temperature of the medium flowing through valve inside as energy source, does not need external power supply and secondary instrument, self force type governing valve is mainly divided into self force type pressure governing valve, self force type pressure difference governing valve, self force type temperature governing valve, self force type flow governing valve, self force type pressure governing valve is widely used in the system needing pressure control, especially in closed water circulation system, such as hot water heating system, air conditioning chilled water system etc., it can simplify the debugging work of system, stabilize the working state of pump, realize the flow distribution and dynamic balance of system;

[0003] Self force type pressure governing valve when using, the diaphragm inside is subjected to pressure change, drives connecting rod to move, this change is difficult to observe outside, inconveniently understand the use state of valve body;

[0004] Therefore, a self force type pressure governing valve is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of self force type pressure governing valve to solve the problem that the use state inside self force type pressure governing valve is difficult to observe in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of self force type pressure governing valve, including valve body, pressure pipe and pressure box, the central position of the inside of the valve body is fixed with valve seat, the both sides of the valve seat are provided with water hole, the inside of the valve seat is provided with valve core, the left side of the valve core is provided with butt joint hole, the top of the valve core is fixed with connecting rod, the top of the valve body is fixed with support rod, the top of the support rod is fixed with pressure box, the inside of the pressure box is installed with diaphragm, the top of the connecting rod extends to the inside of pressure box, the top of the connecting rod is fixedly connected with the bottom of diaphragm, the top of the outer wall of the connecting rod is provided with observation assembly, the observation assembly includes linkage ring, fixed hole, fixed bolt, linkage plate, observation platform and sliding slot, the top of the outer wall of the connecting rod is provided with linkage ring, the right side of the linkage ring is provided with fixed hole, the inside of the fixed hole is provided with fixed bolt, the left side of the linkage ring is fixed with linkage plate, the left side of the pressure box is provided with sliding slot, the left side of the linkage plate extends to the inside of sliding slot, the left side of the linkage plate is fixed with observation platform.

[0007] Preferably, the left side of the valve body is fixed with inlet pipe, the right side of the valve body is fixed with outlet pipe.

[0008] Preferably, the top end of the water outlet pipe is provided with a pressure pipe, and the left side of the pressure pipe is fixedly connected with the right side of the pressure box.

[0009] Preferably, the top end of the outer valve body is provided with a spring.

[0010] Preferably, the upper side of the outer spring is provided with an adjusting ring, the bottom end of the adjusting ring is fixedly provided with a pressing plate, the inner side of the adjusting ring and the pressing plate is provided with a screw hole, the outer side of the pressing plate is fixedly provided with a hand wheel, and the outer side wall of the screw hole is provided with an auxiliary hole.

[0011] Preferably, the outer side of the connecting rod is provided with an external thread, and the inner side of the screw hole is provided with an internal thread.

[0012] Preferably, the auxiliary hole is provided with four groups on the outer side wall of the hand wheel, and the four groups of auxiliary holes are annularly distributed.

[0013] Preferably, the bottom end of the valve body is provided with an adjusting table at the center position, the inner side of the adjusting table is provided with an adjusting hole, the inner side of the adjusting hole is provided with an adjusting bolt, and the top end of the adjusting bolt is provided with a limiting rod.

[0014] Compared with the prior art, the self-powered pressure regulating valve has the beneficial effects that: the observation table is arranged, the connecting ring is arranged on the outer side of the connecting rod, the connecting ring is fixed by being screwed tightly, the connecting plate at the side end of the connecting ring extends into the sliding groove at the side end of the pressure box, and the connecting plate is connected with the observation table on the outer side; when the diaphragm is pressed and the connecting rod is lowered, the connecting plate and the observation table are lowered along the sliding groove under the assistance of the connecting ring; thus, the pressure state of the diaphragm is fed back, and the feedback observation function of the diaphragm rotation of the self-powered pressure regulating valve is realized.

[0015] The hand wheel is arranged, the adjusting ring and the pressing plate on the outer side of the connecting rod are connected with the hand wheel, the adjusting ring and the pressing plate can be rotated by means of the hand wheel, the spring can be pressed downward under the cooperation of the threads between the adjusting ring, the pressing plate and the connecting rod, the elasticity of the spring is adjusted, the deformation degree of the diaphragm is indirectly adjusted, and the convenience of the self-powered pressure regulating valve during pressure adjustment is realized.

[0016] The adjusting bolt is arranged at the bottom of the valve body, the limiting rod can be moved to the inner side of the valve seat under the cooperation of the threads between the adjusting bolt and the adjusting hole when the adjusting bolt is rotated, the limiting rod can be used to limit the lower position of the valve core, the opening and closing degree of the water passage hole in the limit state is assisted to be controlled, the water passage hole can be prevented from being completely closed, and the limiting control function of the self-powered pressure regulating valve is realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view of the sectional structure of the utility model;

[0018] Figure 2 is a front view structural schematic diagram of the utility model;

[0019] Figure 3 is a front view sectional structure schematic diagram of the pressure box of the utility model;

[0020] Figure 4 is a front view sectional structure schematic diagram of the valve body of the utility model.

[0021] In the drawing: 1, valve body; 2, water inlet pipe; 3, valve seat; 4, water passage hole; 5, valve core; 6, butt joint hole; 7, water outlet pipe; 8, pressure pipe; 9, connecting rod; 10, spring; 11, support rod; 12, pressure box; 13, diaphragm; 14, connecting ring; 15, fixed hole; 16, fixed bolt; 17, connecting plate; 18, observation platform; 19, sliding groove; 20, adjusting ring; 21, pressing plate; 22, screw hole; 23, hand wheel; 24, auxiliary hole; 25, adjusting platform; 26, adjusting hole; 27, adjusting bolt; 28, limiting rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-4The utility model provides an embodiment: a self -force pressure regulating valve, including valve body 1, pressure pipe 8 and pressure box 12, the central position of valve body 1 inside is fixed with valve seat 3, both sides of valve seat 3 are provided with water through -hole 4, the inboard of valve seat 3 is provided with valve core 5, the left side of valve core 5 is provided with the butt joint hole 6, the left side of valve body 1 is fixed with inlet pipe 2, the right side of valve body 1 is fixed with outlet pipe 7, the top of valve core 5 is fixed with connecting rod 9, the top of valve body 1 is fixed with support rod 11, the top of support rod 11 is fixed with pressure box 12, the top of outlet pipe 7 is installed with pressure pipe 8, the left side of pressure pipe 8 is fixedly connected with the right side of pressure box 12, the inside of pressure box 12 is installed with diaphragm 13, connecting rod 9 top extends to the inside of pressure box 12, connecting rod 9 top is fixedly connected with the bottom of diaphragm 13, the top of connecting rod 9 outside wall is provided with observation subassembly, and the observation subassembly includes linkage ring 14, fixed hole 15, fixed peg 16, linkage plate 17, observation platform 18 and sliding slot 19, the top of connecting rod 9 outside wall is provided with linkage ring 14, the right side of linkage ring 14 is provided with fixed hole 15, the inside of fixed hole 15 is provided with fixed peg 16, the left side of linkage ring 14 is fixed with linkage plate 17, the left side of linkage plate 17 extends to the inboard of sliding slot 19, and the left side of linkage plate 17 is fixed with observation platform 18;

[0024] Specifically, as shown in Figure 1 and Figure 3 , when using, part of medium enters pressure box 12 along pressure pipe 8 when medium normally flows along inlet pipe 2, valve body 1 and outlet pipe 7 flow channel, and when diaphragm 13 is deformed, connecting rod 9 can be driven to move downwards, at this time, linkage ring 14 sleeved on the outside of connecting rod 9 moves downwards synchronously, and under the assistance of linkage plate 17, observation platform 18 on the outside can be driven to move downwards along sliding slot 19, and the change of diaphragm 13 is indirectly directly fed back;

[0025] The top of valve body 1 on the outside of connecting rod 9 is provided with spring 10, the upper side of spring 10 on the outside of connecting rod 9 is provided with adjusting ring 20, the bottom of adjusting ring 20 is fixed with pressing plate 21, the inside of adjusting ring 20 and pressing plate 21 is provided with screw hole 22, the outside of connecting rod 9 is provided with external thread, the inside of screw hole 22 is provided with internal thread, the outside of pressing plate 21 is fixed with hand wheel 23, the outside wall of screw hole 22 is provided with auxiliary hole 24, four groups of auxiliary hole 24 are provided on the outside wall of hand wheel 23, and the four groups of auxiliary hole 24 are annularly distributed;

[0026] Specifically, as shown in Figure 1 and Figure 3As shown, in use, when the hand wheel 23 is rotated, under the threaded cooperation between the screw hole 22 and the connecting rod 9, it can move up and down along the connecting rod 9, thereby assisting in adjusting the elasticity of the spring 10 and indirectly adjusting the intensity of the pressure feedback of the diaphragm 13. For example, when the elasticity of the spring 10 increases, a greater pressure is required to drive the diaphragm 13 to deform, and then the connecting rod 9 drives the valve core 5 to move inside the valve seat 3.

[0027] The adjusting platform 25 is arranged at the center position of the bottom end of the valve body 1, the adjusting hole 26 is arranged in the adjusting platform 25, and the adjusting bolt 27 is arranged in the adjusting hole 26. The limiting rod 28 is arranged at the top end of the adjusting bolt 27.

[0028] Specifically, as shown in Figure 1 and Figure 4 use, if the adjusting bolt 27 at the center position of the bottom of the valve body 1 is rotated, under the threaded cooperation with the adjusting hole 26, the limiting rod 28 can be pushed to move inside the valve seat 3. The limiting rod 28 inside the valve seat 3 can limit the downward movement of the valve core 5. Even if the pressure is too large, the water passage hole 4 will not be completely closed, and a small channel is always left for the medium to flow.

[0029] Working principle: in use, after the medium enters the valve body 1 along the water inlet pipe 2, it passes through the water passage hole 4 and the butt joint hole 6, and flows to the subsequent equipment through the water outlet pipe 7. Part of the medium enters the pressure box 12 along the pressure pipe 8, and the diaphragm 13 inside the pressure box 12 is pressed. It can deform downward, thereby pushing the connecting rod 9 to move downward, driving the valve core 5 inside the valve seat 3 to move downward, and the butt joint hole 6 on the surface of the valve core 5 is misaligned with the water passage hole 4. The size of the water passage hole 4 can be controlled to change the pressure of the medium inside the water outlet pipe 7. When the diaphragm 13 pushes the connecting rod 9 to move downward, the connecting ring 14 moves downward synchronously, and under the assistance of the connecting plate 17, it can drive the observation platform 18 outside to move, directly feedback the deformation of the diaphragm 13, and assist the operator to observe the use state of the diaphragm 13 inside the pressure box 12. If the adjusting bolt 27 at the bottom position of the valve body 1 is rotated, the limiting rod 28 can be pushed into the water passage hole 4 to limit the downward movement of the valve core 5. Even if the pressure is too large, the water passage hole 4 will not be completely closed, and a small channel is always left for the medium to flow. If the adjusting ring 20 and the pressure plate 21 are rotated by means of the hand wheel 23, under the threaded cooperation between the screw hole 22 and the connecting rod 9, it can move up and down along the connecting rod 9, thereby assisting in adjusting the elasticity of the spring 10 and indirectly adjusting the intensity of the pressure feedback of the diaphragm 13.

[0030] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A self-contained pressure regulating valve comprising a valve body (1), a pressure tube (8) and a pressure cartridge (12), characterized in that: The center position inside the valve body (1) is fixed with a valve seat (3), both sides of the valve seat (3) are provided with water holes (4), the inner side of the valve seat (3) is provided with a valve core (5), the left side of the valve core (5) is provided with a butt joint hole (6), the top end of the valve core (5) is fixed with a connecting rod (9), the top end of the valve body (1) is fixed with a support rod (11), the top end of the support rod (11) is fixed with a pressure box (12), the inside of the pressure box (12) is installed with a diaphragm (13), the top end of the connecting rod (9) extends to the inside of the pressure box (12), the top end of the connecting rod (9) is fixedly connected with the bottom end of the diaphragm (13), the top end of the outer side wall of the connecting rod (9) is provided with an observation assembly; The top end of the outer side wall of the connecting rod (9) is provided with a connecting ring (14), the right side of the connecting ring (14) is provided with a fixed hole (15), the inside of the fixed hole (15) is provided with a fixed bolt (16), the left side of the connecting ring (14) is fixedly connected with a connecting plate (17), the left side of the connecting plate (17) extends to the inside of the sliding groove (19), and the left side of the connecting plate (17) is fixedly connected with an observation platform (18).

2. A self-contained pressure regulating valve according to claim 1, characterized in that: The left side of the valve body (1) is fixedly connected with a water inlet pipe (2), and the right side of the valve body (1) is fixedly connected with a water outlet pipe (7).

3. A self-contained pressure regulating valve according to claim 2, wherein: The top end of the water outlet pipe (7) is provided with a pressure pipe (8), and the left side of the pressure pipe (8) is fixedly connected with the right side of the pressure box (12).

4. The self-contained pressure regulating valve according to claim 1, wherein: The top end of the outer side of the connecting rod (9) is provided with a spring (10).

5. A self-contained pressure regulating valve according to claim 4, wherein: The upper side of the spring (10) is provided with an adjusting ring (20), the bottom end of the adjusting ring (20) is fixedly connected with a pressing plate (21), the inside of the adjusting ring (20) and the pressing plate (21) is provided with a screw hole (22), the outer side of the pressing plate (21) is fixedly connected with a hand wheel (23), and the outer side wall of the screw hole (22) is provided with an auxiliary hole (24).

6. A self-contained pressure regulating valve according to claim 5, wherein: The outer side of the connecting rod (9) is provided with an external thread, and the inside of the screw hole (22) is provided with an internal thread.

7. A self-contained pressure regulating valve according to claim 5, wherein: The outer side wall of the hand wheel (23) is provided with four groups of auxiliary holes (24), and the four groups of auxiliary holes (24) are annularly distributed.

8. The self-contained pressure regulating valve of claim 1, wherein: The center position of the bottom end of the valve body (1) is provided with an adjusting platform (25), the inside of the adjusting platform (25) is provided with an adjusting hole (26), the inside of the adjusting hole (26) is provided with an adjusting bolt (27), and the top end of the adjusting bolt (27) is installed with a limiting rod (28).

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