Explosion-proof valve with pressure relief structure

Abstract

The utility model discloses an explosion-proof valve with a pressure relief structure, and relates to the technical field of explosion-proof valves. The device comprises an adjusting mechanism and a control valve, a pressure relief mechanism is arranged at the bottom of the adjusting mechanism, a sealing gasket is fixedly connected in the control valve, the top of the sealing gasket is in contact with a valve, and the top of the valve is fixedly connected with a connecting sleeve. By arranging the limiting blocks, in the downward process of the adjusting cylinder, the limiting blocks are driven to move downwards, the lengths of the limiting blocks are different, then liquid firstly moves towards the left side from the water inlet pipe and then flows into the control valve through the first flowing groove, and when the internal pressure is too large, the valve is pushed upwards, so that the liquid flows into the control valve through the second flowing groove. And then the connecting sleeve is upwards driven by the valve to move, the more the connecting sleeve moves upwards, the more the connecting sleeve makes contact with the limiting block, meanwhile, the opening pressure of the valve is larger, the opening pressure of the valve can be changed, and therefore the opening pressure of the valve is adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of explosion-proof valves, in particular to an explosion-proof valve with a pressure relief structure. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Explosion-proof valves adopt a top-loading structure, which reduces the connecting bolts of the valve body itself under high pressure and large diameter conditions, enhances the reliability of the valve and can overcome the influence of the system's deadweight on the normal operation of the valve;

[0003] During use, existing valves usually need to be selected according to water pressure. However, the water pressure is not constant during use, which causes the selected valve to be inconsistent with the water pressure during use, resulting in valve leakage. Moreover, when the flowing liquid in the valve is changed, the valve also needs to be replaced. For this reason, we provide an explosion-proof valve with a pressure relief structure. Utility Model Content

[0004] The utility model aims to provide an explosion-proof valve with a pressure relief structure. The more the connecting sleeve contacts the limiting block, the greater the pressure at which the valve is opened, so that the pressure at which the valve is opened can be changed, thereby adjusting the pressure at which the valve is opened. This solves the problem that in the existing use process, the selected valve does not match the water pressure, causing the valve to leak, and the valve needs to be replaced when the flowing liquid in the valve is changed.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is an explosion-proof valve with a pressure relief structure, comprising an adjusting mechanism and a control valve, wherein the adjusting mechanism is provided with a pressure relief mechanism at the bottom, a sealing gasket is fixedly connected inside the control valve, the top of the sealing gasket contacts with a valve, a connecting sleeve is fixedly connected to the top of the valve, an adjusting cylinder is slidably connected inside the connecting sleeve, and a limiting block is slidably connected to the inner wall of the adjusting cylinder;

[0007] There are a total of several limiting blocks, which are arranged in a circular array with the adjusting cylinder as the center. The parts contained in the several limiting blocks are the same. A spring 2 is fixedly connected to the side of the limiting block away from the connecting sleeve, and the other end of the spring 2 is fixedly connected to the inner wall of the adjusting cylinder. The more the connecting sleeve contacts the limiting block, the greater the pressure at which the valve is opened, so that the pressure at which the valve is opened can be changed, thereby adjusting the pressure at which the valve is opened.

[0008] Furthermore, a threaded groove is provided at the center of the inner wall of the adjusting cylinder, and a threaded rod 2 is threadedly connected inside the threaded groove, a rotating rod is fixedly connected to the top of the threaded rod 2, the top of the rotating rod passes through the control valve and extends to the outside, a knob is fixedly connected to the top of the rotating rod, the outer surface of the rotating rod is rotatably connected to the inner wall of the control valve, a rotating ring is rotatably connected to the top of the adjusting cylinder, a rotating groove is provided inside the adjusting cylinder, and a threaded hole is provided in the rotating ring, so that the threaded rod 1 can be driven to rotate through the threaded hole when the rotating ring moves.

[0009] Furthermore, a connecting plate is fixedly connected to the bottom of the rotating ring, and an extrusion block is fixedly connected to the outer surface of the connecting plate. A plurality of extrusion blocks are provided, and the plurality of extrusion blocks are arranged in a ring array with the adjusting cylinder as the center. The inner wall of the connecting plate contacts the inner wall of the rotating groove, and the outer side of the extrusion block contacts the inner wall of the limiting block. The limit block is disengaged from the adjusting cylinder to reduce the downward friction, so that the spring can rebound to reset the valve.

[0010] Furthermore, the outer surface of the limiting block contacts the inner wall of the connecting sleeve, a slider is fixedly connected to the bottom of the adjusting cylinder, a sliding groove is provided on the inner wall of the connecting sleeve, the inner wall of the sliding groove is slidably connected to the outer surface of the slider, a large gear is fixedly connected to the outer surface of the rotating ring, and a small gear is meshedly connected to the right side of the large gear. The small gear is driven to rotate by the rotation of the threaded rod, and the large gear is driven to rotate by the rotation of the small gear, so that the extrusion block is disengaged from the limit block.

[0011] Furthermore, a connecting ring is fixedly connected to the top of the connecting sleeve, a threaded hole is opened on the right side of the connecting ring, a threaded rod 1 is fixedly connected to the bottom of the pinion, the outer surface of the threaded rod 1 is threadedly connected to the inner wall of the threaded hole, the bottom of the threaded rod 1 is rotatably connected to the top of the valve, a spring 1 is fixedly connected to the top of the valve, the top of the spring 1 is fixedly connected to the bottom of the connecting ring, and the connecting sleeve is separated from the limiting block, so that the connecting sleeve can be easily lowered.

[0012] Furthermore, the pressure relief mechanism includes a fixed water inlet pipe fixedly connected to the right side of the control valve, a flow groove 1 is opened on the inner wall of the control valve, a water outlet pipe is fixedly connected to the left side of the flow groove 1, a flow groove 2 is opened on the inner wall of the control valve, the left side of the flow groove 2 contacts with the right side of the water outlet pipe, the right side of the flow groove 1 contacts with the left side of the water inlet pipe, and the contact surface of the limiting block and the connecting sleeve is relatively rough.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model sets a limiting block. When the regulating cylinder moves downward, the limiting block is driven to move downward, and the lengths of the limiting blocks are different. Then the liquid first moves to the left from the water inlet pipe, and then flows into the control valve through the flow groove. When the internal pressure is too large, the valve is pushed upward, and then the connecting sleeve is driven to move upward through the valve. The more the connecting sleeve moves upward, the more it contacts the limiting block, and the greater the pressure at which the valve is opened. Therefore, the pressure at which the valve is opened can be changed, thereby adjusting the pressure at which the valve is opened.

[0015] 2. The utility model sets a rotating ring, and the rotation of the large gear drives the rotating ring to rotate. When the rotating ring rotates, it also drives the connecting plate to rotate. The rotation of the connecting plate drives the extrusion block to rotate, so that the extrusion block is separated from the limiting block, and then the second spring rebounds to pull the limiting block back, so that the limiting block enters the inside of the adjusting cylinder and cancels the contact with the connecting sleeve, and then the spring one rebounds to push the valve downward to make it contact with the sealing gasket for reset, and the downward friction is reduced by the separation of the limit block from the adjusting cylinder, so that the spring one can rebound to reset the valve.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a front sectional structural diagram of the control valve of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the control valve of the utility model;

[0021] Figure 4 This is a front sectional structural diagram of the connecting sleeve of the utility model;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the top of the regulating cylinder of the utility model;

[0023] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure of A.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Adjusting mechanism; 101. Knob; 102. Rotating rod; 103. Valve; 104. Connecting sleeve; 105. Spring 1; 106. Connecting ring; 107. Adjusting cylinder; 108. Threaded rod 1; 109. Pinion; 110. Limiting block; 111. Gear; 112. Slide; 113. Sliding block; 114. Rotating ring; 115. Threaded groove; 116. Threaded rod 2; 117. Connecting plate; 118. Extrusion block; 119. Spring 2; 120. Rotating groove; 2. Pressure relief mechanism; 201. Control valve; 202. Flow groove 1; 203. Water inlet pipe; 204. Water outlet pipe; 205. Flow groove 2; 206. Sealing gasket. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-6 As shown, the utility model is an explosion-proof valve with a pressure relief structure, including an adjusting mechanism 1 and a control valve 201, a pressure relief mechanism 2 is arranged at the bottom of the adjusting mechanism 1, a sealing gasket 206 is fixedly connected inside the control valve 201, a valve 103 is contacted on the top of the sealing gasket 206, a connecting sleeve 104 is fixedly connected on the top of the valve 103, an adjusting cylinder 107 is slidably connected inside the connecting sleeve 104, and a limiting block 110 is slidably connected to the inner wall of the adjusting cylinder 107;

[0028] There are several limiting blocks 110, which are arranged in a circular array with the adjusting cylinder 107 as the center. The parts contained in the limiting blocks 110 are the same. The side of the limiting block 110 away from the connecting sleeve 104 is fixedly connected with a spring 2 119, and the other end of the spring 2 119 is fixedly connected to the inner wall of the adjusting cylinder 107. When the adjusting cylinder 107 moves downward, the limiting block 110 will be driven to move downward, and the lengths of the limiting blocks 110 are different. Then the liquid first moves to the left from the water inlet pipe 203, and then flows into the control valve 201 through the flow groove 1 202. When the internal pressure is too large, the valve 103 will be pushed upward, and then the connecting sleeve 104 will be driven upward through the valve 103 to move. The more the connecting sleeve 104 moves upward, the more it contacts with the limiting block 110, and the greater the pressure at which the valve 103 is opened, so that the pressure at which the valve 103 is opened can be changed, thereby adjusting the pressure at which the valve 103 is opened.

[0029] A thread groove 115 is provided at the center of the inner wall of the regulating cylinder 107 , a threaded rod 116 is threadedly connected inside the thread groove 115 , a rotating rod 102 is fixedly connected to the top of the threaded rod 116 , and the top of the rotating rod 102 passes through the control valve 201 and extends to the outside.

[0030] A knob 101 is fixedly connected to the top of the rotating rod 102, and the outer surface of the rotating rod 102 is rotatably connected to the inner wall of the control valve 201. A rotating ring 114 is rotatably connected to the top of the adjusting cylinder 107, and a rotating groove 120 is opened inside the adjusting cylinder 107. The large gear 111 rotates to drive the rotating ring 114 to rotate, and when the rotating ring 114 rotates, the connecting plate 117 is driven to rotate. The rotation of the connecting plate 117 drives the extrusion block 118 to rotate, so that the extrusion block 118 is separated from the limiting block 110, and then the spring 119 rebounds to pull the limiting block 110 back, so that the limiting block 110 enters the inside of the adjusting cylinder 107 and cancels the contact with the connecting sleeve 104, and then the spring 105 rebounds to push the valve 103 downward, so that it contacts the sealing gasket 206 for reset, and the limiting block 110 is separated from the adjusting cylinder 107 to reduce the downward friction, so that the spring 105 can rebound to reset the valve 103.

[0031] A connecting plate 117 is fixedly connected to the bottom of the rotating ring 114, and an extrusion block 118 is fixedly connected to the outer surface of the connecting plate 117. A plurality of extrusion blocks 118 are provided, and the plurality of extrusion blocks 118 are arranged in a circular array with the adjusting cylinder 107 as the center. The inner wall of the connecting plate 117 contacts the inner wall of the rotating groove 120, and the outer side of the extrusion block 118 contacts the inner wall of the limiting block 110.

[0032] The outer surface of the limiting block 110 contacts the inner wall of the connecting sleeve 104, a slider 113 is fixedly connected to the bottom of the adjusting cylinder 107, a sliding groove 112 is provided on the inner wall of the connecting sleeve 104, the inner wall of the sliding groove 112 is slidingly connected to the outer surface of the slider 113, a large gear 111 is fixedly connected to the outer surface of the rotating ring 114, and a small gear 109 is meshedly connected to the right side of the large gear 111.

[0033] A connecting ring 106 is fixedly connected to the top of the connecting sleeve 104, a threaded hole is opened on the right side of the connecting ring 106, a threaded rod 108 is fixedly connected to the bottom of the pinion 109, the outer surface of the threaded rod 108 is threadedly connected to the inner wall of the threaded hole, the bottom of the threaded rod 108 is rotatably connected to the top of the valve 103, a spring 105 is fixedly connected to the top of the valve 103, and the top of the spring 105 is fixedly connected to the bottom of the connecting ring 106.

[0034] The pressure relief mechanism 2 includes a fixed water inlet pipe 203 fixedly connected to the right side of the control valve 201, a flow groove 202 is opened on the inner wall of the control valve 201, and a water outlet pipe 204 is fixedly connected to the left side of the flow groove 202.

[0035] A flow groove 205 is provided on the inner wall of the control valve 201 , the left side of the flow groove 205 contacts the right side of the water outlet pipe 204 , and the right side of the flow groove 1 202 contacts the left side of the water inlet pipe 203 .

[0036] A specific application of this embodiment is: after the staff installs the device to the specified position, the water inlet pipe 203 and the water outlet pipe 204 are connected first, and then the valve 103 is adjusted according to the pressure demand, the knob 101 is first turned, and the rotation of the knob 101 drives the rotating rod 102 to rotate, and then the rotation of the rotating rod 102 drives the second threaded rod 116 to rotate, and the second threaded rod 116 cooperates with the threaded groove 115 to make the adjustment cylinder 107 move downward, and a slider 113 is fixed at the bottom of the adjustment cylinder 107. When the cylinder 107 moves downward, it will slide with the slide groove 112, so that the adjusting cylinder 107 can only slide up and down. In the process of adjusting the cylinder 107 moving downward, it will drive the limiting block 110 to move downward, and the length of the limiting block 110 is different. Then the liquid first moves to the left from the water inlet pipe 203, and then flows into the control valve 201 through the flow groove 1 202. When the internal pressure is too large, the valve 103 will be pushed upward, and then the connecting sleeve 104 will be driven upward through the valve 103 to move, and the connecting sleeve 1 The more 04 moves upward, the more it contacts with the limiting block 110, and the greater the pressure to open the valve 103, so that the pressure to open the valve 103 can be changed, thereby adjusting the pressure to open the valve 103. When the valve 103 moves upward, it will drive the threaded rod 108 to move upward, and cooperate with the connecting ring 106 to make the threaded rod 108 rotate, and the rotation of the threaded rod 108 drives the small gear 109 to rotate, and then the rotation of the small gear 109 drives the large gear 111 to rotate, and the large gear 111 rotates. The rotation of the oversized gear 111 drives the rotating ring 114 to rotate, and the rotating ring 114 drives the connecting plate 117 to rotate at the same time. The connecting plate 117 drives the extrusion block 118 to rotate, so that the extrusion block 118 is separated from the limiting block 110, and then the spring 119 rebounds to pull the limiting block 110 back, so that the limiting block 110 enters the inside of the regulating cylinder 107 and cancels the contact with the connecting sleeve 104, and then the spring 105 rebounds to push the valve 103 downward to make it contact with the sealing gasket 206 for reset.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An explosion-proof valve with a pressure relief structure, comprising a regulating mechanism (1) and a control valve (201), wherein a pressure relief mechanism (2) is arranged at the bottom of the regulating mechanism (1), and a sealing gasket (206) is fixedly connected inside the control valve (201), characterized in that: The top of the sealing gasket (206) contacts the valve (103), the top of the valve (103) is fixedly connected to a connecting sleeve (104), the interior of the connecting sleeve (104) is slidably connected to an adjusting cylinder (107), and the inner wall of the adjusting cylinder (107) is slidably connected to a limiting block (110); A total of a plurality of limiting blocks (110) are provided, and the limiting blocks (110) are arranged in a circular array with the adjusting tube (107) as the center. The parts contained in the limiting blocks (110) are the same. A second spring (119) is fixedly connected to one side of the limiting block (110) away from the connecting sleeve (104), and the other end of the second spring (119) is fixedly connected to the inner wall of the adjusting tube (107).

2. The explosion-proof valve with a pressure relief structure according to claim 1, characterized in that: A thread groove (115) is provided at the center of the inner wall of the regulating cylinder (107), and a second threaded rod (116) is threadedly connected inside the thread groove (115). A rotating rod (102) is fixedly connected to the top of the second threaded rod (116), and the top of the rotating rod (102) passes through the control valve (201) and extends to the outside.

3. The explosion-proof valve with a pressure relief structure according to claim 2, characterized in that: The top of the rotating rod (102) is fixedly connected to a knob (101), the outer surface of the rotating rod (102) is rotatably connected to the inner wall of the control valve (201), the top of the regulating cylinder (107) is rotatably connected to a rotating ring (114), and a rotating groove (120) is provided inside the regulating cylinder (107).

4. The explosion-proof valve with a pressure relief structure according to claim 3, characterized in that: A connecting plate (117) is fixedly connected to the bottom of the rotating ring (114), and an extrusion block (118) is fixedly connected to the outer surface of the connecting plate (117). A plurality of the extrusion blocks (118) are provided, and the plurality of the extrusion blocks (118) are arranged in a ring array with the adjusting cylinder (107) as the center. The inner wall of the connecting plate (117) contacts the inner wall of the rotating groove (120), and the outer side of the extrusion block (118) contacts the inner wall of the limiting block (110).

5. The explosion-proof valve with a pressure relief structure according to claim 4, characterized in that: The outer surface of the limiting block (110) contacts the inner wall of the connecting sleeve (104); a slider (113) is fixedly connected to the bottom of the adjusting cylinder (107); a sliding groove (112) is provided on the inner wall of the connecting sleeve (104); the inner wall of the sliding groove (112) is slidably connected to the outer surface of the slider (113); a large gear (111) is fixedly connected to the outer surface of the rotating ring (114); and a small gear (109) is meshedly connected to the right side of the large gear (111).

6. The explosion-proof valve with a pressure relief structure according to claim 5, characterized in that: The top of the connecting sleeve (104) is fixedly connected to a connecting ring (106), a threaded hole is opened on the right side of the connecting ring (106), the bottom of the pinion (109) is fixedly connected to a threaded rod (108), the outer surface of the threaded rod (108) is threadedly connected to the inner wall of the threaded hole, the bottom of the threaded rod (108) is rotatably connected to the top of the valve (103), the top of the valve (103) is fixedly connected to a spring (105), and the top of the spring (105) is fixedly connected to the bottom of the connecting ring (106).

7. The explosion-proof valve with a pressure relief structure according to claim 1, characterized in that: The pressure relief mechanism (2) comprises a fixed water inlet pipe (203) fixedly connected to the right side of the control valve (201); a flow groove 1 (202) is provided on the inner wall of the control valve (201); and a water outlet pipe (204) is fixedly connected to the left side of the flow groove 1 (202).

8. The explosion-proof valve with a pressure relief structure according to claim 7, characterized in that: The inner wall of the control valve (201) is provided with a second flow groove (205), the left side of the second flow groove (205) contacts the right side of the water outlet pipe (204), and the right side of the first flow groove (202) contacts the left side of the water inlet pipe (203).

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