Regulating valve

Abstract

The utility model discloses a regulating valve which comprises a valve body and a plurality of circulation holes formed in the side wall of the valve body, the valve body is in threaded connection with a valve element, the valve element is provided with a T-shaped overflow channel, an overflow hole is formed in the end, close to the circulation holes, of the valve element, and the regulating valve further comprises a blocking rod arranged in the overflow hole. The end, close to the locking nut, of the plugging rod is fixedly connected with a sealing block, the sealing block is matched with the inner diameter of the overflow channel, the valve element is provided with an extrusion assembly used for extruding the sealing block, and the sealing block is provided with a speed reduction assembly used for reducing the speed of resilience force of the extrusion assembly. According to the regulating valve, extrusion pushing force is provided for the sealing block, meanwhile, the risk that the extrusion spring is corroded and damaged due to the fact that the extrusion spring makes contact with a medium is reduced through protection of the extrusion spring, and therefore the long-term effect of elastic pushing of the sealing block is improved.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, specifically to a regulating valve. Background Technology

[0002] A regulating valve moves the valve core by rotating a threaded valve stem, changing the relative position between the valve core and the valve ball, thereby adjusting the opening of the fluid passage. When the threaded valve stem rotates, the valve core moves axially, compressing or releasing the spring. After the fluid enters the valve body, if it can overcome the spring force and push the valve ball under pressure, it can flow out from the overflow port. Thus, by adjusting the position of the valve core, the force of the spring on the valve ball is changed, thereby achieving control of fluid flow and pressure.

[0003] In a current type of control valve, the valve ball, under the action of a spring, can fit tightly against the overflow port to prevent the fluid from flowing backward. However, since the spring is located in the overflow channel, it is prone to corrosion damage due to direct contact with the medium, thus affecting the long-term elastic pushing effect of the valve ball. At the same time, under the elastic pushing force of the spring, the valve ball is prone to excessive elastic pushing force due to excessive compression of the spring, which in turn causes excessive impact force when the valve ball and valve core come into contact, resulting in damage to the valve core or valve ball, and thus affecting the sealing performance between the valve core and valve ball.

[0004] Therefore, a regulating valve is urgently needed to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a regulating valve, comprising a valve body and a plurality of flow holes disposed on the side wall of the valve body, wherein the valve body is threadedly connected to a valve core, the end of the valve core near the flow holes is tapered, the end of the valve body away from the flow holes is provided with a locking nut for locking the valve core, the side wall of the valve core is provided with a sealing ring, the valve core has a T-shaped overflow channel, the end of the valve core near the flow holes is provided with an overflow hole, and further comprising a sealing rod disposed on the overflow hole, the end of the sealing rod near the locking nut being fixedly connected to a sealing block, the sealing block being matched with the inner diameter of the overflow channel, the inner wall of the overflow channel having a tapered clearance hole, the valve core being provided with a compression assembly for compressing the sealing block, and the sealing block being provided with a deceleration assembly for reducing the rebound force of the compression assembly;

[0006] The extrusion assembly includes a T-shaped valve stem threaded to the valve core. The T-shaped valve stem has an extrusion hole on its side wall inside the overflow channel. An extrusion plate is slidably connected to the extrusion hole. An extrusion rod is fixedly connected to the side of the extrusion plate near the overflow hole. The end of the extrusion rod away from the extrusion plate is connected to a sealing block. An extrusion spring is provided on the side of the extrusion plate away from the extrusion rod. The end of the extrusion spring away from the extrusion plate is rotatably connected to the bottom wall of the extrusion hole through a rotating ring.

[0007] The speed reduction assembly includes a plurality of fixed holes arranged in a ring array on the side of the sealing block near the sealing rod. Each fixed hole is fixedly connected to a fixed tube, and each fixed tube is fixedly connected to a speed reduction tube. Each speed reduction tube is slidably connected to a speed reduction rod on the side near the sealing rod. Each speed reduction tube is provided with a first buffer assembly and a second buffer assembly for buffering the speed reduction rod.

[0008] The T-shaped valve stem has graduation lines on its side wall.

[0009] The first buffer assembly includes a buffer plate slidably connected inside the speed reduction tube. The end of the speed reduction rod away from the overflow hole is connected to the buffer plate. A buffer spring is fixedly connected to the side of the buffer plate away from the speed reduction rod. The end of the buffer spring away from the buffer plate is connected to the bottom wall of the speed reduction tube.

[0010] The second buffer assembly includes two symmetrically arranged first and second buffer tubes fixedly connected to the side wall of the deceleration tube. The two ends of the first and second buffer tubes are located on both sides of the buffer plate, respectively. The deceleration tube is filled with damping fluid, which flows from the first and second buffer tubes.

[0011] One-way valves are provided at both ends of the first buffer tube and the second buffer tube near the deceleration tube. The conduction direction of the two one-way valves in the first buffer tube is from one side of the buffer plate near the overflow hole to the other side. The conduction direction of the two one-way valves in the second buffer tube is set opposite to the one-way direction of the other two one-way valves.

[0012] Two damping plates are fixedly connected to the inner wall of the second buffer tube. The two damping plates have multiple damping holes. Multiple flow-retarding plates are staggered on the inner wall of the second buffer tube between the two damping plates.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model discloses a regulating valve that, while providing a squeezing force to the sealing block, reduces the risk of corrosion damage to the squeezing spring due to contact with the medium by protecting the squeezing spring. This improves the long-term elasticity of the squeezing force on the sealing block. At the same time, when the squeezing assembly pushes the sealing block to seal the overflow hole, the speed reduction assembly, along with the double-layer buffer protection of the first and second buffer assemblies, reduces the moving speed of the sealing block at the sealing end of the overflow channel. This reduces the impact force when the sealing block comes into contact with the valve core, thereby reducing impact damage when the valve core or sealing block seals, and ensuring the normal service life of the valve core or sealing block. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a regulating valve and an extrusion assembly according to the present invention.

[0017] Figure 3 This is a schematic diagram of the internal structure of the deceleration component of this utility model;

[0018] Figure 4 for Figure 3 Large view of the house at location A in the middle;

[0019] Figure 5 This is a schematic diagram of the damping plate of this utility model;

[0020] Figure 6 This is a schematic diagram showing the flow direction of the two check valves;

[0021] Figure 7 This is a schematic diagram showing the state of the deceleration lever when the overflow orifice is open and closed.

[0022] In the diagram: 101, valve body; 102, valve core; 103, locking nut; 104, sealing ring; 105, overflow hole; 106, flow hole; 107, overflow channel; 2, plugging rod; 3, sealing block; 401, T-shaped valve stem; 402, extrusion hole; 403, extrusion plate; 404, extrusion rod; 405, extrusion spring; 406, scale line; 501, fixing hole; 502, fixing tube; 503, speed reduction tube; 504, speed reduction rod; 601, buffer plate; 602, buffer spring; 701, first buffer tube; 702, second buffer tube; 703, one-way valve; 704, damping plate; 705, damping hole; 706, flow damping plate; 8, tapered clearance hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figures 1-7The diagram shows a regulating valve, including a valve body 101 and multiple flow holes 106 disposed on the side wall of the valve body 101. A valve core 102 is threadedly connected to the valve body 101. The end of the valve core 102 near the flow holes 106 is tapered. A locking nut 103 for locking the valve core 102 is provided at the end of the valve body 101 away from the flow holes 106. A sealing ring 104 is provided on the side wall of the valve core 102. The valve core 102 has a T-shaped overflow channel 107. 02 An overflow hole 105 is provided at one end near the flow hole 106, and a sealing rod 2 is also provided at the overflow hole 105. A sealing block 3 is fixedly connected at one end of the sealing rod 2 near the locking nut 103. The sealing block 3 is matched with the inner diameter of the overflow channel 107. A tapered clearance hole 8 is provided on the inner wall of the overflow channel 107. The valve core 102 is provided with a compression component for squeezing the sealing block 3. The sealing block 3 is provided with a deceleration component for reducing the rebound force of the compression component.

[0026] The extrusion assembly includes a T-shaped valve stem 401 threaded to the valve core 102. The T-shaped valve stem 401 has an extrusion hole 402 on the side wall inside the overflow channel 107. An extrusion plate 403 is slidably connected to the extrusion hole 402. An extrusion rod 404 is fixedly connected to the side of the extrusion plate 403 near the overflow hole 105. The end of the extrusion rod 404 away from the extrusion plate 403 is connected to the sealing block 3. An extrusion spring 405 is provided on the side of the extrusion plate 403 away from the extrusion rod 404. The end of the extrusion spring 405 away from the extrusion plate 403 is rotatably connected to the bottom wall of the extrusion hole 402 through a rotating ring.

[0027] It should be noted here that by setting up the extrusion assembly, while providing extrusion force to the sealing block 3, the risk of corrosion damage to the extrusion spring 405 due to contact with the medium is reduced by protecting the extrusion spring 405, thereby improving the long-term elasticity of the extrusion of the sealing block 3.

[0028] It is worth noting that the specific structure and working principle of a regulating valve are already known to those skilled in the art, and will not be elaborated upon here.

[0029] Please see Figure 3 and Figure 4 The speed reduction assembly shown in the figure includes a plurality of fixed holes 501 arranged in a ring array on the side of the sealing block 3 near the sealing rod 2. Each fixed hole 501 is fixedly connected to a fixed tube 502. Each fixed tube 502 is fixedly connected to a speed reduction tube 503. Each speed reduction tube 503 is slidably connected to a speed reduction rod 504 on the side of the sealing rod 2. Each speed reduction tube 503 is provided with a first buffer assembly and a second buffer assembly for buffering the speed reduction rod 504.

[0030] It should be noted that by setting up the speed reduction component, the moving speed of the sealing block 3 at the sealing end of the overflow channel 107 is reduced by utilizing the two layers of buffer protection of the first buffer component and the second buffer component. This reduces the impact force when the sealing block 3 comes into contact with the valve core 102, thereby reducing the impact damage when the valve core 102 or the sealing block 3 seals, thus ensuring the normal service life of the valve core 102 or the sealing block 3.

[0031] Please see Figure 2 The T-shaped valve stem 401 in the figure has a scale line 406 on its side wall;

[0032] It should be noted here that the scale line 406 is used to provide accurate data reference when adjusting the elastic compressive force on the sealing block 3.

[0033] Working principle: During the use of this regulating valve, when the medium flows into the valve body 101, it will flow from the gap between the conical end of the valve core 102 and the valve body 101 to the flow hole 106, thereby realizing the free flow of the medium. Furthermore, the position adjustment of the valve core 102 by the cylinder can realize the control of the medium flow rate.

[0034] When the pressure of the medium flowing through the valve body 101 is too high, when the pressure is greater than the squeezing and pushing of the extrusion assembly on the sealing rod 2, the sealing rod 2 will be pushed out of the overflow hole 105, and then the sealing block 3 will be pushed to the conical relief hole 8, so that the high pressure medium flows out from between the conical relief hole 8 and the sealing block 3, thereby realizing the automatic regulation and control of the medium flow and pressure in the valve body 101;

[0035] Furthermore, the compression spring 405 used to push the sealing block 3 is in a closed environment, which reduces the risk of corrosion damage caused by contact with the medium, thereby improving the long-term elasticity of pushing the sealing block 3. At the same time, when the compression assembly pushes the sealing block 3 to seal the overflow hole 105, under the action of the deceleration assembly, the movement speed of the sealing block 3 at the sealing end of the overflow channel 107 is reduced by the two layers of buffer protection of the first buffer assembly and the second buffer assembly, thereby reducing the impact force when the sealing block 3 comes into contact with the valve core 102, and thus reducing the impact damage when the valve core 102 or the sealing block 3 seals, thereby ensuring the normal service life of the valve core 102 or the sealing block 3.

[0036] Example 2

[0037] Please see Figure 3 and Figure 4This embodiment further illustrates Example 1. The first buffer assembly shown in the figure includes a buffer plate 601 slidably connected inside the deceleration tube 503. One end of the deceleration rod 504 away from the overflow hole 105 is connected to the buffer plate 601. A buffer spring 602 is fixedly connected to the side of the buffer plate 601 away from the deceleration rod 504. One end of the buffer spring 602 away from the buffer plate 601 is connected to the bottom wall of the deceleration tube 503.

[0038] It should be noted here that the setting of the first buffer component provides the first layer of buffering effect for the movement of the sealing block 3.

[0039] Please see Figure 3 and Figure 4 The second buffer assembly shown in the figure includes two symmetrically arranged first buffer tubes 701 and second buffer tubes 702 fixedly connected to the side wall of the deceleration tube 503. The two ends of the first buffer tubes 701 and the second buffer tubes 702 are respectively located on both sides of the buffer plate 601. The deceleration tube 503 is filled with damping fluid, and the damping fluid flows from the first buffer tubes 701 and the second buffer tubes 702.

[0040] It should be noted here that the setting of the second buffer component provides a second layer of buffer protection for the sealing block 3.

[0041] Please see Figure 6 In the figure, the first buffer tube 701 and the second buffer tube 702 are respectively provided with one-way valves 703 at both ends near the deceleration tube 503. The conduction direction of the two one-way valves 703 in the first buffer tube 701 is from one side of the buffer plate 601 near the overflow hole 105 to the other side. The conduction direction of the two one-way valves 703 in the second buffer tube 702 is set opposite to the one-way direction of the other two one-way valves 703.

[0042] It should be noted here that the one-way valve 703 is configured and the direction of conduction is limited (see reference). Figure 6 The direction of flow of damping fluid is defined for different states when the overflow orifice 105 is open or closed.

[0043] Please see Figure 3 and Figure 4 In the figure, the inner wall of the second buffer tube 702 is fixedly connected to two damping plates 704. The two damping plates 704 have multiple damping holes 705. The inner wall of the second buffer tube 702 between the two damping plates 704 is staggered with multiple flow-retarding plates 706.

[0044] It should be noted here that the damping plate 704 and multiple flow-retarding plates 706 are used to provide resistance to the flow of the damping fluid, thereby slowing down the backflow rate of the damping fluid.

[0045] Working principle: When the pressure of the medium flowing through the valve body 101 is too high, when the pressure is greater than the squeezing and pushing of the extrusion assembly on the sealing rod 2, the sealing rod 2 will be pushed out of the overflow hole 105, and then the sealing block 3 will be pushed to the conical relief hole 8, so that the high pressure medium flows out from between the conical relief hole 8 and the sealing block 3, thereby realizing the automatic regulation and control of the medium flow and pressure in the valve body 101;

[0046] Furthermore, as the sealing block 3 moves away from the overflow hole 105, each deceleration lever 504 will move out of the deceleration tube 503 under the elastic action of the buffer spring 602. Simultaneously, the buffer plate 601 at one end of each deceleration lever 504 slides within the deceleration tube 503. As the buffer plate 601 slides closer to the overflow hole 105, under the pressure and the one-way sealing action of the one-way valve 703, the damping fluid in the deceleration tube 503 flows from the first buffer tube 701 to the other side of the buffer plate 601. At this time, the damping fluid flows smoothly without resistance interference (see reference). Figure 7 );

[0047] When the pressure in valve body 101 is released to normal, the sealing block 3 will move closer to the overflow hole 105 under the elastic action of the compression assembly. During the process of the sealing block 3 moving closer to the overflow hole 105, the sealing rod 2 at one end of the sealing block 3 will be inserted into the overflow hole 105, thereby achieving preliminary sealing of the overflow hole 105 (see reference). Figure 7 As the sealing block 3 continues to move closer to the overflow hole 105, the deceleration rod 504 at one end of the sealing block 3 will first contact the bottom wall of the overflow channel 107, thereby pushing the deceleration rod 504 to retract into the deceleration tube 503. At this time, the buffer plate 601 will compress the buffer spring 602, causing the buffer spring 602 to deform under force and form elastic force, thereby providing the first layer of buffering effect for the movement of the sealing block 3.

[0048] Furthermore, when the buffer plate 601 moves away from the overflow hole 105 within the speed-reducing pipe 503, the damping fluid in the speed-reducing pipe 503 will flow through the second buffer pipe 702 under the pressure and the one-way sealing action of the one-way valve 703. When the damping fluid flows through the second buffer pipe 702, the flow resistance of the damping fluid is relatively large due to the blocking action of multiple damping holes 705 on the side walls of the two damping plates 704 and various flow-slowing plates 706, thus forming a damping buffer mechanism. This provides a second layer of buffer protection for the sealing block 3. Subsequently, under the buffer protection on both sides, the moving speed of the sealing block 3 at the sealing end of the overflow channel 107 is reduced, thereby reducing the impact force when the sealing block 3 comes into contact with the valve core 102, and further reducing the impact damage when the valve core 102 or the sealing block 3 seals, thus ensuring the normal service life of the valve core 102 or the sealing block 3.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A regulating valve, comprising: The valve body (101) and a plurality of flow holes (106) provided on the side wall of the valve body (101) are provided. The valve body (101) is threadedly connected to a valve core (102). The valve core (102) is tapered at one end near the flow hole (106). The valve body (101) is provided with a locking nut (103) for locking the valve core (102) at one end away from the flow hole (106). The valve core (102) is provided with a sealing ring (104) on the side wall. The valve core (102) is provided with a T-shaped overflow channel (107). The valve core (102) is provided with an overflow hole (105) at one end near the flow hole (106). Its characteristic is that it further includes: A sealing rod (2) is provided in the overflow hole (105). A sealing block (3) is fixedly connected to one end of the sealing rod (2) near the locking nut (103). The sealing block (3) is matched with the inner diameter of the overflow channel (107). A tapered clearance hole (8) is provided on the inner wall of the overflow channel (107). The valve core (102) is provided with a compression component for squeezing the sealing block (3). The sealing block (3) is provided with a deceleration component for reducing the rebound force of the compression component. The extrusion assembly includes a T-shaped valve stem (401) threaded to the valve core (102). The T-shaped valve stem (401) has an extrusion hole (402) on its side wall inside the overflow channel (107). An extrusion plate (403) is slidably connected to the extrusion hole (402). An extrusion rod (404) is fixedly connected to the side of the extrusion plate (403) near the overflow hole (105). The end of the extrusion rod (404) away from the extrusion plate (403) is connected to the sealing block (3). An extrusion spring (405) is provided on the side of the extrusion plate (403) away from the extrusion rod (404). The end of the extrusion spring (405) away from the extrusion plate (403) is rotatably connected to the bottom wall of the extrusion hole (402) through a rotating ring. The speed reduction assembly includes a plurality of fixed holes (501) arranged in a ring array on the side of the sealing block (3) near the sealing rod (2). Each fixed hole (501) is fixedly connected to a fixed tube (502). Each fixed tube (502) is fixedly connected to a speed reduction tube (503). Each speed reduction tube (503) is slidably connected to a speed reduction rod (504) on the side of the sealing rod (2). Each speed reduction tube (503) is provided with a first buffer assembly and a second buffer assembly for buffering the speed reduction rod (504).

2. A control valve according to claim 1, characterised in that: The T-shaped valve stem (401) has scale lines (406) on its side wall.

3. A control valve according to claim 2, wherein: The first buffer assembly includes a buffer plate (601) slidably connected inside the speed reduction tube (503). The end of the speed reduction rod (504) away from the overflow hole (105) is connected to the buffer plate (601). A buffer spring (602) is fixedly connected to the side of the buffer plate (601) away from the speed reduction rod (504). The end of the buffer spring (602) away from the buffer plate (601) is connected to the bottom wall of the speed reduction tube (503).

4. A control valve according to claim 3, wherein: The second buffer assembly includes two symmetrically arranged first buffer tubes (701) and second buffer tubes (702) fixedly connected to the side wall of the deceleration tube (503). The two ends of the first buffer tubes (701) and the second buffer tubes (702) are respectively located on both sides of the buffer plate (601). The deceleration tube (503) is filled with damping fluid, which flows from the first buffer tubes (701) and the second buffer tubes (702).

5. A control valve according to claim 4, wherein: The first buffer tube (701) and the second buffer tube (702) are respectively provided with one-way valves (703) at both ends near the deceleration tube (503). The two one-way valves (703) located in the first buffer tube (701) are in the direction of conduction from one side of the buffer plate (601) near the overflow hole (105) to the other side. The two one-way valves (703) located in the second buffer tube (702) are in the opposite direction of conduction to the other two one-way valves (703).

6. A control valve according to claim 5, wherein: The inner wall of the second buffer tube (702) is fixedly connected to two damping plates (704), and the two damping plates (704) are provided with multiple damping holes (705). Multiple flow-retarding plates (706) are staggered on the inner wall of the second buffer tube (702) between the two damping plates (704).

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