Pressure release valve

Abstract

The utility model relates to the technical field of valves, and discloses a pressure release valve which comprises a main body assembly, a valve body, an adjusting bolt and an adjusting nut, the adjusting bolt is rotationally connected into the valve body through threads, and the adjusting nut is fixed to the top of the adjusting bolt; and the fastening assembly is arranged on the valve body and comprises a fastening piece, an adjusting piece and a positioning piece, the fastening piece is located on the surface of the adjusting bolt, the adjusting piece is arranged on one side of the fastening piece, and the positioning piece is located on one side of the adjusting piece. The adjusting bolt has the advantages that the adjusting bolt can be fastened at any position through the fastening assembly, and the fastening assembly cannot be loosened due to vibration generated by the valve body.

Description

Technical Field

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

[0002] A pressure relief valve, also known as a safety valve, is a device that can automatically open and close according to the working pressure of the system. It is generally installed on equipment or pipelines in a closed system to protect the safety of the system. Its main function is to automatically open and release pressure when the pressure in the equipment or pipeline exceeds the set value, and guide the excess fluid outside the valve to keep the medium pressure in the equipment and pipeline below the set pressure, thereby preventing accidents in the equipment and pipeline due to excessive pressure. Among them, spring-type pressure relief valves are widely used because their pressure can be easily adjusted. The adjusting bolts of existing spring-type pressure relief valves are generally fixed by nuts. However, during the operation of the pressure relief valve, its valve body will vibrate, causing the fastening nut to loosen, thereby causing the adjusting bolt to lose its fixation, which will affect the performance and safety of the pressure relief valve. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above problems and / or the problems existing in the existing pressure relief valves, the present utility model is proposed.

[0005] Therefore, the problem to be solved by the utility model is that the adjusting bolt of the existing spring-type pressure relief valve is generally fixed by a nut, but during the operation of the pressure relief valve, its valve body will vibrate, causing the fastening nut to loosen, thereby causing the adjusting bolt to lose its fixation, which will affect the performance and safety of the pressure relief valve.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a pressure relief valve, comprising a main body assembly, including a valve body, an adjusting bolt and an adjusting nut, wherein the adjusting bolt is rotatably connected to the valve body through a thread, and the adjusting nut is fixed to the top of the adjusting bolt; and

[0007] The fastening assembly is arranged on the valve body, and comprises a fastener, an adjusting member and a positioning member. The fastener is located on the surface of the adjusting bolt, the adjusting member is arranged on one side of the fastener, and the positioning member is located on one side of the adjusting member.

[0008] As a preferred solution of the pressure relief valve of the utility model, the fastener comprises a limiting shell and a fastening sleeve, the limiting shell is fixed to the top of the valve body, and the fastening sleeve slides in the limiting shell.

[0009] As a preferred solution of the pressure relief valve of the utility model, the fastener further comprises a backing plate and an extrusion rod, the backing plate is fixed to the top of the valve body, and the extrusion rod slides on the top of the backing plate.

[0010] As a preferred solution of the pressure relief valve of the utility model, a guide groove is provided on one side of the fastening sleeve, and a chamfer is provided on the end of the extrusion rod.

[0011] As a preferred solution of the pressure relief valve of the utility model, the adjusting member includes a support block and a push rod, the support block is fixed to one side of the limiting shell, and the push rod slides in the support block.

[0012] As a preferred solution of the pressure relief valve of the utility model, the adjusting member further comprises an adjusting sleeve and a driving rod, the adjusting sleeve is rotatably connected to the surface of the push rod through a thread, and the driving rod is fixed to one side of the adjusting sleeve.

[0013] As a preferred solution of the pressure relief valve of the utility model, wherein: the regulating member further includes a limit plate and a fixing bolt, the limit plate is located at one side of the support block, and the fixing bolt is located inside the limit plate.

[0014] As a preferred solution of the pressure relief valve of the utility model, the positioning member includes a positioning rod and a driving handle, the positioning rod slides in the driving rod, and the driving handle is fixed to the end of the positioning rod.

[0015] As a preferred solution of the pressure relief valve of the utility model, the positioning member further comprises a limit plate and a spring, the limit plate is fixed to the surface of the positioning rod, and the spring is sleeved on the surface of the positioning rod.

[0016] The utility model has the beneficial effects that the adjusting bolt can be tightened at any position by arranging the tightening assembly, and the tightening assembly will not become loose due to the vibration generated by the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 This is the structural diagram of the pressure relief valve.

[0019] Figure 2 This is the connection structure diagram of the adjusting bolt and fastening sleeve of the pressure relief valve.

[0020] Figure 3 This is a cross-sectional structural diagram of the support block of the pressure relief valve.

[0021] Figure 4 This is a cross-sectional structural diagram of the limit shell of the pressure relief valve.

[0022] Figure 5 This is a structural diagram of the connection between the clamping sleeve and the extrusion rod of the pressure relief valve. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Example 1

[0027] Reference Figure 1 to Figure 5 , which is the first embodiment of the utility model, provides a pressure relief valve, which includes a main body component 100 and a fastening component 200. Through the cooperation of the two, the adjusting bolt 102 can be fastened at any position, and the fastening component 200 will not loosen due to the vibration generated by the valve body.

[0028] Specifically, the main assembly 100 includes a valve body 101 , an adjusting bolt 102 and an adjusting nut 103 . The adjusting bolt 102 is rotatably connected to the valve body 101 through a thread, and the adjusting nut 103 is fixed to the top of the adjusting bolt 102 .

[0029] The valve body 101 is the main body of the pressure relief valve, the adjusting bolt 102 is used to adjust the threshold of the pressure relief valve, and the adjusting nut 103 is used to drive the adjusting bolt 102 to rotate.

[0030] The fastening assembly 200 is disposed on the valve body 101 and includes a fastener 201 , an adjusting member 202 and a positioning member 203 . The fastener 201 is located on the surface of the adjusting bolt 102 , the adjusting member 202 is disposed on one side of the fastener 201 , and the positioning member 203 is located on one side of the adjusting member 202 .

[0031] The fastener 201 is used to fasten the adjusting bolt 102 , the adjusting member 202 is used to drive the fastener 201 to move, and the positioning member 203 is used to fix the adjusting member 202 , thereby fixing the fastener 201 , so that the adjusting bolt 102 will not loosen.

[0032] Specifically, the fastener 201 includes a limiting shell 201a and a fastening sleeve 201b. The limiting shell 201a is fixed to the top of the valve body 101, and the fastening sleeve 201b slides in the limiting shell 201a.

[0033] The limiting shell 201a is used to support the fastening sleeve 201b so that the fastening sleeve 201b will not rotate along with the adjusting bolt 102, and the fastening sleeve 201b and the adjusting bolt 102 are rotationally connected via a thread.

[0034] Specifically, the fastener 201 further includes a backing plate 201c and an extrusion rod 201d. The backing plate 201c is fixed to the top of the valve body 101, and the extrusion rod 201d slides on the top of the backing plate 201c.

[0035] The pad 201c is used to support the extrusion rod 201d. The extrusion rod 201d can squeeze the fastening sleeve 201b through the support of the pad 201c, so that the fastening sleeve 201b pulls the adjusting bolt 102 upward, thereby increasing the friction between the adjusting bolt 102 and the fastening sleeve 201b, thereby tightening the adjusting bolt 102.

[0036] Specifically, a guide groove S is provided on one side of the fastening sleeve 201b, and a chamfer M is provided on the end of the extrusion rod 201d.

[0037] The guide groove S and the chamfer M make it easier for the extrusion rod 201d to move between the backing plate 201c and the fastening sleeve 201b, and the guide groove S and the chamfer M reduce the travel required for the extrusion rod 201d to move when extruding the fastening sleeve 201b.

[0038] Example 2

[0039] Reference Figure 2 and Figure 3 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0040] Specifically, the adjusting member 202 includes a supporting block 202a and a push rod 202b. The supporting block 202a is fixed to one side of the limiting shell 201a, and the push rod 202b slides in the supporting block 202a.

[0041] The support block 202a is used to support the extrusion rod 201d and the push rod 202b so that the extrusion rod 201d and the push rod 202b can move stably, and the push rod 202b is used to push the extrusion rod 201d.

[0042] Specifically, the adjusting member 202 further includes an adjusting sleeve 202c and a driving rod 202d. The adjusting sleeve 202c is rotatably connected to the surface of the push rod 202b through a thread, and the driving rod 202d is fixed to one side of the adjusting sleeve 202c.

[0043] The adjusting sleeve 202c is used to drive the push rod 202b to move, and the adjusting sleeve 202c can be driven to rotate by rotating the driving rod 202d.

[0044] Specifically, the adjusting member 202 further includes a limiting plate 202e and a fixing bolt 202f. The limiting plate 202e is located on one side of the supporting block 202a, and the fixing bolt 202f is located inside the limiting plate 202e.

[0045] The limit plate 202e is fixed to one side of the support block 202a by a fixing bolt 202f. The limit plate 202e is used to limit the adjustment sleeve 202c so that the adjustment sleeve 202c can rotate stably. When the adjustment sleeve 202c rotates in situ, the push rod 202b can be driven to move, so that the extrusion rod 201d enters or moves away from between the pad 201c and the fastening sleeve 201b.

[0046] Example 3

[0047] Reference Figure 2 , which is the third embodiment of the utility model, and this embodiment is based on the first two embodiments.

[0048] Specifically, the positioning member 203 includes a positioning rod 203a and a driving handle 203b. The positioning rod 203a slides in the driving rod 202d, and the driving handle 203b is fixed to the end of the positioning rod 203a.

[0049] The end of the positioning rod 203a is inserted into the supporting block 202a to fix the position of the driving rod 202d, and the driving handle 203b is used to drive the positioning rod 203a to move.

[0050] Specifically, the positioning member 203 further includes a limiting plate 203c and a spring 203d. The limiting plate 203c is fixed on the surface of the positioning rod 203a, and the spring 203d is sleeved on the surface of the positioning rod 203a.

[0051] The limiting plate 203c is used to support the spring 203d and to limit the positioning rod 203a. The spring 203d is in a compressed state. By pulling the driving handle 203b, the end of the positioning rod 203a can be pulled out of the supporting block 202a. At this time, the limiting plate 203c compresses the spring 203d, thereby releasing the limit on the driving rod 202d, so that the driving rod 202d can be moved.

[0052] During use, when it is necessary to fix the adjusting bolt 102, the driving handle 203b can be pulled to make the end of the positioning rod 203a pull out of the supporting block 202a. At this time, the limiting plate 203c compresses the spring 203d, thereby releasing the limit on the driving rod 202d. At this time, moving the driving handle 203b can drive the driving rod 202d to move, thereby driving the adjusting sleeve 202c to rotate. When the adjusting sleeve 202c rotates, it can drive the push rod 202b and the extrusion rod 201d to move between the fastening sleeve 201b and the pad 201c, thereby squeezing the fastening sleeve 201b, so that the fastening sleeve 201b moves upward. At this time, the fastening sleeve 201b will increase the friction force on the adjusting bolt 102, thereby fixing the adjusting bolt 102.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pressure relief valve, characterized in that: include, A main body assembly (100) comprises a valve body (101), an adjusting bolt (102) and an adjusting nut (103), wherein the adjusting bolt (102) is rotatably connected to the valve body (101) through a thread, and the adjusting nut (103) is fixed to the top of the adjusting bolt (102); and The fastening assembly (200) is arranged on the valve body (101), and comprises a fastener (201), an adjusting member (202) and a positioning member (203); the fastener (201) is located on the surface of the adjusting bolt (102); the adjusting member (202) is arranged on one side of the fastener (201); and the positioning member (203) is located on one side of the adjusting member (202).

2. The pressure relief valve according to claim 1, characterized in that: The fastener (201) comprises a limiting shell (201a) and a fastening sleeve (201b); the limiting shell (201a) is fixed to the top of the valve body (101), and the fastening sleeve (201b) slides inside the limiting shell (201a).

3. The pressure relief valve according to claim 2, characterized in that: The fastener (201) further comprises a backing plate (201c) and an extrusion rod (201d), wherein the backing plate (201c) is fixed to the top of the valve body (101), and the extrusion rod (201d) slides on the top of the backing plate (201c).

4. The pressure relief valve according to claim 3, characterized in that: A guide groove (S) is provided on one side of the fastening sleeve (201b), and a chamfer (M) is provided on the end of the extrusion rod (201d).

5. The pressure relief valve according to claim 4, characterized in that: The adjusting member (202) comprises a supporting block (202a) and a push rod (202b); the supporting block (202a) is fixed to one side of the limiting shell (201a); and the push rod (202b) slides in the supporting block (202a).

6. The pressure relief valve according to claim 5, characterized in that: The adjusting member (202) further comprises an adjusting sleeve (202c) and a driving rod (202d); the adjusting sleeve (202c) is rotatably connected to the surface of the push rod (202b) via a thread, and the driving rod (202d) is fixed to one side of the adjusting sleeve (202c).

7. The pressure relief valve according to claim 6, characterized in that: The adjusting member (202) further comprises a limiting plate (202e) and a fixing bolt (202f); the limiting plate (202e) is located on one side of the supporting block (202a); and the fixing bolt (202f) is located inside the limiting plate (202e).

8. The pressure relief valve according to claim 6 or 7, characterized in that: The positioning member (203) comprises a positioning rod (203a) and a driving handle (203b), wherein the positioning rod (203a) slides inside the driving rod (202d), and the driving handle (203b) is fixed to the end of the positioning rod (203a).

9. The pressure relief valve according to claim 8, characterized in that: The positioning member (203) further comprises a limiting plate (203c) and a spring (203d); the limiting plate (203c) is fixed on the surface of the positioning rod (203a); and the spring (203d) is sleeved on the surface of the positioning rod (203a).

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