High-stability valve pressing cap

Abstract

The utility model relates to the technical field of valve pressing caps, in particular to a high-stability valve pressing cap which comprises a pressing cap body located in a valve seat, the pressing cap body is composed of a support and a supporting column, the supporting column is provided with a threaded seat corresponding to the valve seat, the supporting column is fixedly provided with a sealing gasket and a support, the support is provided with four first cavities distributed in the circumferential direction, and the four first cavities are communicated with the supporting column. A second cavity communicated with the first cavity is formed in the support, a sliding block is slidably arranged in the second cavity in a sleeved mode, and a second spring is welded between the sliding block and the second cavity. According to the utility model, the support is arranged on the pressing cap main body, so that the positioning rod moves out of the cavity II and extends into the valve seat when in use, and the pressing cap main body is further connected with the valve seat; the supporting plate and the support are connected through the positioning bolt, the abutting rod abuts against the pressure applying rod all the time, the pressure applying face on the pressure applying rod corresponds to the inclined face on the positioning rod, the positioning rod extends into the valve seat all the time in the using process, and then the operation stability of the valve seat is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve pressure caps, in particular to a high-stability valve pressure cap. Background Art

[0002] Valves are control components in fluid delivery systems and have functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion or overflow pressure relief.

[0003] The valve is sealed by the pressure cap when in use. Currently, after the pressure cap is installed on the valve through the threaded seat, bolts are used to directly connect the pressure cap and the valve seat. The valve itself has a large pressure when it is adjusted, which causes the valve and the pressure cap to shake when in use. The long-term shaking of the valve will loosen the bolts, causing the pressure cap to disconnect from the valve, and the loose pressure cap will fall off the valve, which will cause the valve to leak during operation. Not only can the stability of the valve and the pressure cap not be guaranteed, but the efficiency of valve delivery is also affected. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the pressure cap is easily disconnected from the valve when in use, and proposes a high-stability valve pressure cap.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-stability valve bonnet comprises a bonnet body located in a valve seat, wherein the bonnet body is composed of a support and a pillar, and a threaded seat corresponding to the valve seat is provided on the pillar, a sealing gasket and a bracket are fixedly installed on the pillar respectively, the support is provided with four circumferentially distributed cavities one, the bracket is provided with a cavity two connected with cavity one, a sliding sleeve in cavity two is provided with a slider, and a spring two is welded between the slider and cavity two, the sliding sleeve in cavity two is provided with a positioning rod connected with the slider and extending into the valve seat, and a slope is provided on one side of the positioning rod, and a driving component for driving the positioning rod is installed in cavity one.

[0007] Preferably, the bracket is an annular structure, and a sealing ring extending into the valve seat is provided on the bracket. The cavity one is vertically opened, and the cavity two is horizontally opened below the cavity one.

[0008] Preferably, a slot for limiting the position of the slider is provided in the second cavity, and the second spring is horizontally welded to a side position where the slider extends into the slot.

[0009] Preferably, the driving assembly includes two guide rods fixedly installed in cavity one, a guide block is slidably sleeved on the guide rod, and a pressure rod corresponding to the positioning rod is integrally connected between the two guide blocks, a spring one matching with the guide rod is welded between the guide block and cavity one, and a pressure assembly for applying pressure to the pressure rod is installed on the support.

[0010] Preferably, the guide rod is vertically arranged, the pressure rod is provided with a pressure surface corresponding to the inclined surface of the positioning rod, and the spring is vertically welded.

[0011] Preferably, the pressure assembly includes a support plate installed on the support, and four resistance rods and a soft pad extending into the pressure rod are fixedly installed on the support plate respectively. The support plate is an annular structure, and a positioning bolt corresponding to the support is threadedly connected on the support plate.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model provides a bracket on the pressure cap body and a movable positioning rod in the bracket, so that the positioning rod moves out of the second cavity and extends into the valve seat when in use, thereby connecting the pressure cap body and the valve seat.

[0014] 2. The utility model connects the support plate and the support seat through the positioning bolt, so that the resistance rod always resists the pressure rod, and then the pressure surface on the pressure rod corresponds to the inclined surface on the positioning rod, so that the positioning rod always extends into the valve seat when in use, avoiding the direct use of bolts to connect the pressure cap body and the valve seat, which may cause the pressure cap body to fall off, thereby improving the stability of the valve seat operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the high-stability valve pressure cap proposed by the utility model;

[0016] Figure 2 This is a cross-sectional view of the support of the high-stability valve pressure cap proposed by the utility model;

[0017] Figure 3 This is a cross-sectional view of the high-stability valve pressure cap proposed by the utility model.

[0018] In the figure: 1. support; 2. pillar; 3. sealing pad; 4. bracket; 5. sealing ring; 6. cavity one; 7. cavity two; 8. slider; 9. spring two; 10. positioning rod; 11. guide rod; 12. guide block; 13. pressure rod; 14. spring one; 15. support plate; 16. resistance rod; 17. cushion. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-Figure 3 , a high-stability valve bonnet, comprising a bonnet body located in a valve seat (the valve seat is not shown in the drawings of the specification), the bonnet body consisting of a support 1 and a support 2, and a threaded seat corresponding to the valve seat is provided on the support 2;

[0021] The support 2 is respectively fixed with a sealing gasket 3 and a bracket 4, the bracket 4 is an annular structure, the bracket 4 is provided with a sealing ring 5 extending into the valve seat, the sealing gasket 3 and the sealing ring 5 can seal the connection between the pressure cap body and the valve seat, the cavity 1 6 is vertically opened, and the cavity 2 7 is horizontally opened below the cavity 1 6, the support 1 is provided with four circumferentially distributed cavities 1 6, and the bracket 4 is provided with a cavity 2 7 connected with the cavity 1 6;

[0022] A sliding sleeve is provided in the second cavity 7, and a second spring 9 is welded between the slider 8 and the second cavity 7. A slot for limiting the slider 8 is provided in the second cavity 7, and the second spring 9 is horizontally welded to a side position where the slider 8 extends into the slot. The slot guides the slider 8 so that the slider 8 can pull the positioning rod 10 smoothly when moving, and the second spring 9 resets the slider 8.

[0023] The sliding sleeve in the second cavity 7 is provided with a positioning rod 10 connected with the slider 8 and extending into the valve seat, and a slope is provided on one side of the positioning rod 10;

[0024] A driving assembly for driving the positioning rod 10 is installed in the cavity 1 6;

[0025] The driving assembly includes two guide rods 11 fixedly installed in the cavity 16, a guide block 12 is slidably sleeved on the guide rod 11, and a pressure rod 13 corresponding to the positioning rod 10 is integrally connected between the two guide blocks 12, and a spring 14 matched with the guide rod 11 is welded between the guide block 12 and the cavity 16, and the guide rod 11 guides and limits the guide block 12, so that the guide block 12 can smoothly pull the pressure rod 13 when moving, and the spring 14 resets the guide block 12. When the pressure rod 13 is in an unloaded state, the spring 14 can pull the guide block 12 and the pressure rod 13 back to the initial position;

[0026] The guide rod 11 is arranged vertically, the pressure rod 13 is provided with a pressure surface corresponding to the inclined surface of the positioning rod 10, and the spring 14 is welded vertically. Figure 3As shown, when the pressure rod 13 drives the pressure surface to continuously move downward, it can correspond to the inclined surface of the positioning rod 10, so that the pressure rod 13 squeezes the inclined surface through the pressure surface, so that the positioning rod 10 can extend into the valve seat when moving, so that the pressure cap body and the valve seat can always be connected, which not only ensures the stability of the valve seat and the pressure cap, but also improves the efficiency of valve seat transportation;

[0027] A pressure component for applying pressure to the pressure rod 13 is installed on the support 1;

[0028] The pressure assembly includes a support plate 15 installed on the support 1, and four resistance rods 16 and a cushion 17 extending into the pressure rod 13 are fixedly installed on the support plate 15. The support plate 15 is an annular structure, and a positioning bolt corresponding to the support 1 is threadedly connected to the support plate 15. The support plate 15 and the support 1 are connected through the positioning bolt, so that the resistance rod 16 squeezes the pressure rod 13, and the pressure rod 13 can squeeze the positioning rod 10, so that the pressure cap body and the valve seat can be quickly connected.

[0029] The functional principle of the utility model can be explained through the following operation modes:

[0030] The pressure cap body is installed in the valve seat through the threaded seat, and the support 2 drives the sealing gasket 3 and the sealing ring 5 to seal the connection between the pressure cap body and the valve seat when moving downward;

[0031] When the pressure cap body moves down to the specified position, the pressure cap body is connected to the valve seat;

[0032] Place the support plate 15 on the support 1, so that the support plate 15 drives the abutment rod 16 to extend into the cavity 1 6 and abut against the pressure rod 13, and the cushion 17 can seal the connection between the abutment rod 16 and the support 1;

[0033] The pressure rod 13 is forced to drive the guide block 12 to slide on the guide rod 11, and the spring 14 is forced to move the pressure rod 13 down into the cavity 2 7 and apply pressure to the inclined surface on the positioning rod 10 through the pressure surface;

[0034] The inclined surface of the positioning rod 10 is squeezed and slides in the second cavity 7 by the continuous downward movement of the pressure surface. When the positioning rod 10 moves, it drives the slider 8 to slide in the slot. The spring 9 is stressed, so that one end of the positioning rod 10 extends into the valve seat.

[0035] The support plate 15 is connected to the support seat 1 by using a positioning bolt, so that the pressure cap body and the valve seat are connected.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-stability valve bonnet, comprising a bonnet body located in a valve seat, wherein the bonnet body is composed of a support (1) and a support column (2), and a threaded seat corresponding to the valve seat is provided on the support column (2). It is characterized in that The pillar (2) is respectively fixedly mounted with a sealing gasket (3) and a bracket (4); the support (1) is provided with four circumferentially distributed cavities (6); the bracket (4) is provided with a cavity (7) connected to the cavity (6); a sliding sleeve is provided in the cavity (7) with a slider (8); a spring (9) is welded between the slider (8) and the cavity (7); a positioning rod (10) connected to the slider (8) and extending into the valve seat is provided in the sliding sleeve in the cavity (7); a slope is provided on one side of the positioning rod (10); a driving component for driving the positioning rod (10) is installed in the cavity (6).

2. The high stability valve cap according to claim 1, It is characterized in that The support (4) is an annular structure, and a sealing ring (5) extending into the valve seat is provided on the support (4). The cavity one (6) is vertically opened, and the cavity two (7) is horizontally opened below the cavity one (6).

3. The high stability valve cap according to claim 1, It is characterized in that The second cavity (7) is provided with a slot for limiting the position of the slider (8), and the second spring (9) is horizontally welded to a side position of the slider (8) extending into the slot.

4. The high stability valve cap according to claim 1, It is characterized in that The driving assembly comprises two guide rods (11) fixedly mounted in cavity one (6), a guide block (12) being slidably sleeved on the guide rods (11), and a pressure rod (13) corresponding to the positioning rod (10) being integrally connected between the two guide blocks (12), a spring (14) matching the guide rod (11) being welded between the guide block (12) and cavity one (6), and a pressure assembly for applying pressure to the pressure rod (13) being installed on the support (1).

5. The high stability valve cap according to claim 4, It is characterized in that The guide rod (11) is arranged vertically, the pressure rod (13) is provided with a pressure surface corresponding to the inclined surface of the positioning rod (10), and the spring 1 (14) is welded vertically.

6. The high stability valve cap according to claim 4, It is characterized in that The pressure-applying assembly comprises a support plate (15) mounted on a support (1), and four abutment rods (16) and a soft pad (17) extending into the pressure-applying rod (13) are respectively fixedly mounted on the support plate (15); the support plate (15) is an annular structure, and a positioning bolt corresponding to the support (1) is threadedly connected to the support plate (15).

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