A throttle valve for a pressure reducing valve

Abstract

The utility model discloses the throttle valve core technical field, specifically a kind of throttle valve core of pressure reducing valve, the utility model discloses including valve body, the inside of valve body is provided with valve core subassembly, the top of valve core subassembly is provided with anti-rotation mechanism;The anti-rotation mechanism includes the handle of being set at the top of valve core subassembly, the outside center symmetry of handle is rotatably installed with engaging block, second spring is arranged between the inboard of one end of engaging block and handle, the outside of engaging block is clamped and is connected with engaging groove, engaging groove is equiangular and is opened in the inboard of fixed disc, the lower end of fixed disc is symmetrically installed with support block before and after.The utility model discloses by setting anti-rotation mechanism, the rotation of valve stem can be positioned after, can effectively avoid the rotation of valve stem, influence the flow of fluid;Meanwhile setting reinforcing sealing mechanism, the sealing property of effectively strengthening piston and fluid inlet place connection can be effectively avoided Fluid appears the condition of leakage.

Description

Technical Field

[0001] This utility model relates to the field of throttling valve core technology, specifically a throttling valve core for a pressure reducing valve. Background Technology

[0002] The throttle valve core is the core component of the pressure reducing valve. It mainly consists of the valve core and the valve stem. The valve stem controls the opening and closing of the medium or regulates the flow rate through rotation or lifting.

[0003] Currently, the valve stem used in throttle valve cores is usually threaded to the valve body of pressure reducing valves. This connection can cause the valve stem to be affected by impact or vibration after rotation, making it prone to swivel. At the same time, the poor sealing at the connection between the piston and the fluid inlet can lead to the risk of fluid leakage. Utility Model Content

[0004] The purpose of this invention is to provide a throttling valve core for a pressure reducing valve to solve the problems in the prior art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A throttling valve core for a pressure reducing valve includes a valve body, wherein a valve core assembly is disposed inside the valve body, and an anti-rotation mechanism is disposed on the top of the valve core assembly.

[0007] The anti-rotation mechanism includes a handle located on top of the valve core assembly. A locking block is symmetrically mounted on the outer side of the handle. A second spring is provided between the inner side of one end of the locking block and the handle. A locking groove is engaged with the outer side of the locking block. The locking groove is opened at an equal angle on the inner side of the fixed plate. Support blocks are symmetrically mounted on the lower end of the fixed plate. The valve body is fixedly connected to the lower end of the support blocks.

[0008] Preferably, the valve core assembly includes a valve stem threadedly connected to the upper part of the valve body, and a handle is fixedly mounted on the upper end of the valve stem by bolts.

[0009] Preferably, a connecting rod is installed below the valve stem, a piston is provided on the lower side of the connecting rod, a gasket is slidably connected to the outer side of the connecting rod, the gasket is fixedly installed on the lower inner side of the valve body, a first spring is provided on the upper outer side of the connecting rod, a connecting block is fixedly connected to the upper end of the first spring, and the connecting block is installed on the upper inner side of the valve body.

[0010] Preferably, the lower end of the valve body is provided with an inlet, and the lower right side of the valve body is provided with an outlet.

[0011] Preferably, a sealing assembly is provided on the upper inner side of the inlet. The sealing assembly includes a sealing gasket fixedly installed on the upper inner side of the inlet. A piston is tightly fitted inside the sealing gasket. A sealing ring is fixedly installed on the outer upper end of the inlet. The sealing ring has symmetrical connecting grooves on the left and right sides inside.

[0012] Preferably, a reinforcing sealing mechanism is provided on the upper side of the connecting groove. The reinforcing sealing mechanism is slidably disposed on the inner side of the valve body. The reinforcing sealing mechanism includes a clamping block that is engaged with the inside of the connecting groove. A connecting rod is slidably connected to the inner side of the clamping block. A clamping rod is fixedly connected to the upper end of the clamping block.

[0013] Preferably, a limit block is fixedly installed at the upper end of the clamping rod, and a locking block is installed at the outer end of the limit block. The locking block is T-shaped, and a locking groove is engaged on the lower outer side of the locking block. The locking groove is fixedly installed on the upper outer side of the valve body. Handles are symmetrically installed on the left and right sides of the upper end of the limit block.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model, by setting an anti-rotation mechanism, can limit the rotation of the valve stem, effectively preventing the valve stem from rotating and affecting the flow of fluid;

[0016] 2. By setting up a reinforced sealing mechanism, this utility model can effectively enhance the sealing performance of the connection between the piston and the fluid inlet, and can effectively prevent fluid leakage. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the throttling valve core structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the perspective cross-sectional structure of the throttling valve core of this utility model;

[0020] Figure 3 This is a schematic diagram of the anti-rotation mechanism of the throttle valve core of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the throttle valve core sealing assembly of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the throttling valve core enhanced sealing mechanism of this utility model.

[0023] The attached figures are labeled as follows:

[0024] 1. Valve body; 2. Valve core assembly; 21. Valve stem; 22. Connecting rod; 23. First spring; 24. Connecting block; 25. Gasket; 3. Inlet; 4. Outlet; 5. Piston; 6. Reinforced sealing mechanism; 61. Pressing block; 62. Pressing rod; 63. Limiting block; 64. Handle; 65. Locking block; 66. Locking groove; 7. Anti-rotation mechanism; 71. Handle; 72. Locking block; 73. Second spring; 74. Locking groove; 75. Fixing plate; 76. Support block; 8. Sealing assembly; 81. Sealing gasket; 82. Sealing ring; 83. Connecting groove. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] To address the problems existing in the prior art, this embodiment provides the following technical solution: a pressure reducing valve throttling valve core comprising a valve body 1, a valve core assembly 2, and an anti-rotation mechanism 7. The anti-rotation mechanism 7 is located at the upper end of the valve core assembly 2, ensuring that the valve stem 21 in the valve core assembly 2 does not easily rotate after rotation adjustment. Simultaneously, a reinforced sealing mechanism 6 is provided, located on the upper side of the inlet 3, which enhances the sealing performance of the connection between the piston 5 and the inlet 3, effectively preventing fluid leakage.

[0027] like Figure 2 , Figure 3 and Figure 4As shown, fluid flows into the valve body 1 through inlet 3 at the lower end of the valve body 1, and then flows out through outlet 4 on the lower right side of the valve body 1. A piston 5 is located on the upper side of the inlet 3 to seal it. The piston 5 is mounted on the lower end of the connecting rod 22, and the upper end of the connecting rod 22 is fixedly connected to the valve stem 21. The valve stem 21 is threadedly connected to the upper side of the valve body 1. A first spring 23 is located on the outer side of the connecting rod 22, and the upper end of the first spring 23 is fixedly connected to the connecting block 24. Additionally, the connecting rod 22... The lower side is slidably connected to the gasket 25 fixedly installed inside the valve body 1. The handle 71 is fixedly installed by bolts on the upper end of the valve stem 21. When the handle 71 is rotated, the valve stem 21 and the connecting rod 22 will rotate. The connecting rod 22 will drive the piston 5 to move upward and slide upward inside the gasket 25. At this time, the first spring 23 will also be compressed. The first spring 23 can play the role of pressure regulation and stabilization. When the piston 5 moves upward, it will separate from the inside of the inlet 3. At this time, the fluid that enters the valve body 1 will flow out from the outlet 4 through the inlet 3.

[0028] The valve stem 21 is threaded to the upper inner side of the valve body 1. Due to impact and vibration, it is prone to rotation after rotation. A fixing plate 75 is installed on the outside of the handle 71. A support block 76 is installed below the fixing plate 75 and fixedly connected to the upper end of the valve body 1. A locking block 72 is symmetrically mounted on the outer side of the handle 71. One side of the inner end of the locking block 72 is connected to the handle 71 by a second spring 73. The outer side of the locking block 72 engages with the locking groove 74, which is equidistantly formed inside the fixing plate 75. Next, the position of the handle 71 is effectively limited. When the handle 71 needs to be turned, the locking block 72 can be pinched inward with a finger. At this time, the second spring 73 will be compressed, and the locking block 72 will disengage from the locking groove 74. Then, the handle 71 can be turned to adjust the connecting rod 22 installed below the handle 71. After the adjustment is completed, the locking block 72 can be released. At this time, the second spring 73 will rebound, which will make the locking block 72 engage with the locking groove 74, thus firmly limiting the rotation of the handle 71.

[0029] like Figure 2 , Figure 4 and Figure 5As shown, to ensure the sealing of the connection between the piston 5 and the upper inner side of the inlet 3, a sealing gasket 81 is installed at the upper inner side of the inlet 3. When the piston 5 enters the inlet 3, its outer side will fit tightly against the sealing gasket 81. A sealing ring 82 is installed on the upper outer side of the inlet 3. The sealing ring 82 has symmetrical connecting grooves 83 on its interior. A reinforcing sealing mechanism 6 is installed on the upper side of the piston 5. The reinforcing sealing mechanism 6 is slidably installed inside the valve body 1. The reinforcing sealing mechanism 6 includes a clamping block 61 installed on the upper side of the piston 5. The clamping block 61 is slidably connected to the lower inner side of the connecting rod 22. Additionally, the clamping block 61... A clamping rod 62 is installed at the upper end of the valve body 1, and a limiting block 63 is installed at the upper end of the clamping rod 62. A locking block 65 is installed on the left and right sides of the outer end of the limiting block 63. After the piston 5 is tightly fitted with the upper inner end of the inlet 3, the handles 64 installed on the left and right sides of the upper end of the limiting block 63 can be grasped and moved downwards. This causes the locking blocks 65 installed on both sides to engage with the locking groove 66 installed on the upper outer side of the valve body 1. At this time, the clamping block 61 moves downwards, and its lower end engages with the connecting groove 83. Its upper inner side engages with the piston 5, so that the piston 5 can be firmly and tightly fitted with the upper inner side of the inlet 3, which can prevent fluid leakage.

[0030] The working principle of the pressure reducing valve's throttling valve core is as follows: An anti-rotation mechanism 7 is set at the upper end of the valve core assembly 2, which can effectively prevent the handle 71 from rotating after adjustment. At the same time, a sealing assembly 8 is set on the inner and outer sides of the upper end of the inlet 3, which can effectively enhance the sealing performance of the connection between the piston 5 and the inlet 3. In addition, a reinforcing sealing mechanism 6 is set on the upper side of the piston 5 and the sealing assembly 8. The reinforcing sealing mechanism 6 is slidably set inside the valve body 1, which can press the piston 5 tightly, making it firmly fit against the upper inner side of the inlet 3, which can effectively prevent fluid leakage.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A throttle spool for a pressure reducing valve, characterized by: Includes a valve body (1), inside which a valve core assembly (2) is provided, and on the top of the valve core assembly (2) is an anti-rotation mechanism (7); The anti-rotation mechanism (7) includes a handle (71) set on the top of the valve core assembly (2). A locking block (72) is symmetrically mounted on the outer side of the handle (71). A second spring (73) is provided between the inner side of one end of the locking block (72) and the handle (71). A locking groove (74) is engaged and connected to the outer side of the locking block (72). The locking groove (74) is opened at equal angles on the inner side of the fixed plate (75). A support block (76) is symmetrically mounted on the lower end of the fixed plate (75). A valve body (1) is fixedly connected to the lower end of the support block (76).

2. A throttle spool for a pressure reducing valve according to claim 1, wherein The valve core assembly (2) includes a valve stem (21) that is threaded to the upper part of the valve body (1), and a handle (71) is fixedly mounted on the upper end of the valve stem (21) by bolts.

3. A throttle spool for a pressure reducing valve according to claim 2 wherein, A connecting rod (22) is installed below the valve stem (21). A piston (5) is provided on the lower side of the connecting rod (22). A gasket (25) is slidably connected to the outer side of the connecting rod (22). The gasket (25) is fixedly installed on the lower inner side of the valve body (1). A first spring (23) is provided on the upper outer side of the connecting rod (22). A connecting block (24) is fixedly connected to the upper end of the first spring (23). The connecting block (24) is installed on the upper inner side of the valve body (1).

4. A throttle spool for a pressure reducing valve according to claim 3 wherein, The valve body (1) has an inlet (3) at its lower end and an outlet (4) on its lower right side.

5. The throttling valve core of a pressure reducing valve according to claim 4, characterized in that, A sealing assembly (8) is provided on the upper side of the inside of the inlet (3). The sealing assembly (8) includes a sealing gasket (81) fixedly installed on the upper side of the inside of the inlet (3). A piston (5) is tightly fitted inside the sealing gasket (81). A sealing ring (82) is fixedly installed on the outer side of the upper end of the inlet (3). A connecting groove (83) is symmetrically opened on the left and right sides inside the sealing ring (82).

6. The throttling valve core of a pressure reducing valve according to claim 5, characterized in that, A reinforcing sealing mechanism (6) is provided on the upper side of the connecting groove (83). The reinforcing sealing mechanism (6) is slidably disposed on the inner side of the valve body (1). The reinforcing sealing mechanism (6) includes a pressing block (61) that is engaged and connected inside the connecting groove (83). A connecting rod (22) is slidably connected to the inner side of the pressing block (61). A pressing rod (62) is fixedly connected to the upper end of the pressing block (61).

7. The throttling valve core of a pressure reducing valve according to claim 6, characterized in that, A limiting block (63) is fixedly installed at the upper end of the clamping rod (62). A locking block (65) is installed at the outer end of the limiting block (63). The locking block (65) is T-shaped. A locking groove (66) is engaged with the lower outer side of the locking block (65). The locking groove (66) is fixedly installed on the upper outer side of the valve body (1). Handles (64) are symmetrically installed on the left and right sides of the upper end of the limiting block (63).

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