Valve core of pressure release valve

Abstract

The utility model relates to the technical field of pressure release valves, in particular to a valve core of a pressure release valve, which comprises a piston sleeve and a stop component arranged at the bottom of the piston sleeve. The stop assembly comprises a stop block, the periphery of the stop block is connected with a protective sleeve through bolts, the piston sleeve is connected with the protective sleeve through bolts, and the bottom of the protective sleeve is connected with a flow guide cover in a welded mode. By additionally arranging the auxiliary reinforcing mechanism and utilizing the mode of secondary stopping on the periphery of the valve seat, the use stability of the valve element is improved, precision reduction caused by abrasion of the valve element is reduced, the use sealing performance is improved, and therefore the use effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure relief valves, in particular to a valve core of a pressure relief valve. Background Art

[0002] A pressure relief valve is a valve that can automatically open and close according to the system working pressure. It is generally installed on equipment or pipelines in a closed system to protect the safety of the system. It is mainly used to protect equipment and pipelines, maintain system pressure stability and improve system safety. The valve core is the core component of the pressure relief valve, which directly determines the performance and reliability of the pressure relief valve.

[0003] At present, when using the valve core of the pressure relief valve, there is a lack of auxiliary reinforcement mechanism. Usually, the pressure relief valve completes the pressure relief seal through the stop of the valve core. However, in actual use, the repeated displacement of the valve core stop block will cause friction with the valve seat and cause loss, resulting in a decrease in sealing performance, which is likely to affect the use accuracy of the valve core of the pressure relief valve. Therefore, a pressure relief valve core is proposed to increase the auxiliary reinforcement mechanism and utilize the secondary stop on the periphery of the valve seat to improve the stability of the valve core, reduce the accuracy drop caused by valve core wear, improve the sealing performance, and thus improve the use effect. Utility Model Content

[0004] In response to the problems in the prior art, the utility model provides a pressure relief valve core, which utilizes a secondary stop on the periphery of the valve seat to improve the stability of the valve core and thus improve the use effect.

[0005] The technical solution adopted by the utility model to solve the technical problem is a pressure relief valve core, comprising a piston sleeve and a stop assembly, wherein the stop assembly is provided at the bottom of the piston sleeve;

[0006] The stop assembly comprises a stop block, the periphery of the stop block is connected to a sleeve via bolts, the piston sleeve is connected to the sleeve via bolts, and the bottom of the sleeve is connected to a deflector cover via welding.

[0007] By adopting the above technical solution, an auxiliary reinforcement mechanism can be added, and the secondary stop seal method can be used to improve the stability and accuracy of the valve core operation, making it less susceptible to wear and tear and affecting the accuracy of use, and also helping to extend the service life of the valve core.

[0008] Specifically, the bottom of the stop block is connected to a stop protrusion by welding, and an oblique hole is opened on the outer surface of the stop protrusion.

[0009] By adopting the above technical solution, it is possible to increase or decrease auxiliary guide mechanisms, utilize the diversion of decompressed gas and liquid to assist in cleaning and removing impurities from the inner wall of the valve seat, reduce the wear caused by solid impurities, improve the use effect of the valve core stop assembly, and also help to extend the service life of the valve core.

[0010] Specifically, a guide groove is provided in the stop block, and the guide groove is connected to the inclined hole. A filter hole is fixedly provided at the bottom of the guide groove in the stop block.

[0011] By adopting the above technical solution, part of the depressurized gas and liquid can be filtered and diverted for use.

[0012] Specifically, a screw plug is provided on the top of the piston sleeve, and a guide rod is connected to the bottom of the screw plug via a bolt, and the piston sleeve is sleeved and connected to the guide rod.

[0013] By adopting the above technical solution, the valve core can be fixedly installed in the pressure relief valve for use, thereby playing an auxiliary guiding role and improving the stability of the valve core operation.

[0014] Specifically, the outer periphery of the guide rod is located between the piston sleeve and the screw plug and is sleeve-connected with a spring.

[0015] By adopting the above technical solution, it is convenient to utilize the elastic thrust to drive the piston sleeve and the stop assembly to fall back and complete the reset.

[0016] Beneficial effects of the utility model:

[0017] The pressure relief valve core described in the utility model can add an auxiliary reinforcement mechanism through the set stop block, sleeve, and guide cover. When the valve core and the valve seat cooperate to form a sealing mechanism, a secondary sealing reinforcement structure is formed on the periphery of the valve seat, which can not only improve the stability of the stop component, but also reduce the accuracy drop caused by wear. The guide cover also plays an auxiliary diversion role, which can increase the pressure relief circulation speed of over-pressure gas and liquid, thereby improving the use effect and helping to extend the service life.

[0018] The pressure relief valve core described in the utility model can add an auxiliary impurity removal mechanism by means of the set stop protrusion, inclined hole, guide groove and filter hole. During the process of the valve core resetting and falling back, the pressure relief gas and liquid are used to assist in cleaning the inner wall of the valve seat, thereby reducing the residual solid impurities, thereby reducing the wear on the stop block and the stop protrusion, and is conducive to improving the quality and effect of the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the stopper assembly of the present invention;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the stopper protrusion of the present utility model;

[0023] In the figure: 1. Piston sleeve; 2. Stop assembly; 201. Stop block; 202. Sheath; 203. Air guide cover; 204. Stop protrusion; 205. Filter hole; 206. Guide groove; 207. Oblique hole; 3. Screw plug; 4. Guide rod; 5. Spring. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] In order to facilitate the use of the secondary stop on the periphery of the valve seat to improve the stability of the valve core and thus improve the use effect, such as Figure 1-3 As shown, the pressure relief valve core of the utility model includes a piston sleeve 1 and a stopper assembly 2, and the stopper assembly 2 is provided at the bottom of the piston sleeve 1;

[0026] The stop assembly 2 includes a stop block 201 , the periphery of the stop block 201 is connected to a sleeve 202 by bolts, and the piston sleeve 1 is connected to the sleeve 202 by bolts, and the bottom of the sleeve 202 is connected to a deflector 203 by welding.

[0027] During use, the auxiliary reinforcement mechanism can be added through the stop block 201, the sleeve 202 and the guide cover 203, and the secondary stop sealing method is used to improve the stability and accuracy of the valve core operation, making it less susceptible to wear and tear and affecting the accuracy of use, and also helping to extend the service life of the valve core.

[0028] In order to improve the use effect of the valve core, for example, Figure 2 、 Figure 3 As shown, the present invention further includes that the bottom of the stop block 201 is connected to a stop protrusion 204 by welding, and an oblique hole 207 is opened on the outer surface of the stop protrusion 204.

[0029] During use, the auxiliary diversion mechanism can be increased or decreased through the stop protrusion 204 and the inclined hole 207, and the inner wall of the valve seat can be assisted in cleaning and removing impurities by utilizing the diversion of the decompressed gas and liquid, thereby reducing the wear caused by solid impurities, improving the use effect of the valve core stop assembly 2, and also helping to extend the service life of the valve core.

[0030] For example, Figure 3 As shown, the present invention further includes a guide groove 206 provided in the stop block 204 , and the guide groove 206 is connected to the inclined hole 207 , and a filter hole 205 is fixedly provided at the bottom of the guide groove 206 in the stop block 204 .

[0031] When in use, part of the depressurized gas and liquid can be filtered and diverted for use through the guide groove 206 and the filter hole 205.

[0032] For example, Figure 1 As shown, the utility model further includes that a screw plug 3 is provided on the top of the piston sleeve 1 , the bottom of the screw plug 3 is connected to a guide rod 4 through a bolt, and the piston sleeve 1 is sleeved and connected to the guide rod 4 .

[0033] When in use, the valve core is fixedly installed in the pressure relief valve through the screw plug 3 for use, and the guide rod 4 plays an auxiliary guiding role to improve the stability of the valve core.

[0034] For example, Figure 1 As shown, the present invention further includes that the outer periphery of the guide rod 4 is located between the piston sleeve 1 and the screw plug 3 and is sleeve-connected with a spring 5 .

[0035] When in use, the spring 5 facilitates the use of elastic thrust to drive the piston sleeve 1 and the stop assembly 2 to fall back and complete the reset.

[0036] When the utility model is in use, the stop block 201 is firstly inserted into the valve seat to complete the pressure relief sealing action. At the same time, the sheath 202 and the flow guide cover 203 form a secondary reinforcement mechanism on the periphery of the valve seat, thereby improving the stability of the stop block 201 and the stop protrusion 204 in use, reducing the accuracy degradation caused by long-term use wear, and improving the use effect and quality of the valve core. In addition, the setting of the flow guide cover 203 can also play a role in assisting pressure relief and diversion, thereby increasing the circulation speed of the pressure-relieved gas and liquid.

[0037] After the over-pressure gas and liquid are depressurized, under the action of the elastic thrust of the spring 5, the stop assembly 2 begins to fall back and is stuck in the corresponding position of the valve seat. At the same time, part of the depressurized gas and liquid enters the guide groove 206 through the filter hole 205, and is then sent out from the inclined hole 207 to the surface inside the outer valve seat, which plays an auxiliary cleaning and impurity removal effect, so as to improve the use quality of the valve core, reduce the loss rate of the valve core, improve the use effect, and also help to extend the actual service life and reduce the use cost.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure relief valve core, characterized in that: It comprises a piston sleeve (1) and a stopper assembly (2), wherein the bottom of the piston sleeve (1) is provided with the stopper assembly (2); The stopper assembly (2) comprises a stopper block (201), the periphery of the stopper block (201) is connected to a sleeve (202) via bolts, the piston sleeve (1) is connected to the sleeve (202) via bolts, and the bottom of the sleeve (202) is connected to a deflector cover (203) via welding.

2. A pressure relief valve core according to claim 1, characterized in that: The bottom of the stop block (201) is connected to a stop protrusion (204) by welding, and an oblique hole (207) is provided on the outer surface of the stop protrusion (204).

3. A pressure relief valve core according to claim 2, characterized in that: A guide groove (206) is provided in the stop convex block (204), and the guide groove (206) is connected to the inclined hole (207). A filter hole (205) is fixedly provided at the bottom of the guide groove (206) in the stop convex block (204).

4. The pressure relief valve core according to claim 1, characterized in that: A screw plug (3) is provided on the top of the piston sleeve (1), and a guide rod (4) is connected to the bottom of the screw plug (3) via a bolt, and the piston sleeve (1) is sleeve-connected to the guide rod (4).

5. The pressure relief valve core according to claim 4, characterized in that: The outer periphery of the guide rod (4) is located between the piston sleeve (1) and the screw plug (3) and is sleeve-connected with a spring (5).

Images