Safety valve with long service life

Abstract

The utility model relates to the technical field of safety valves, and discloses a safety valve with long service life, which comprises a main body mechanism, the main body mechanism comprises a device main body, an air inlet, a limit ring, a threaded rod, a first adjusting grip, a pressure reading, a positioning sheet, a telescopic rod, a movable spring, a movable elastic plate, a movable valve, wear-resistant rubber, an air outlet and a second adjusting grip, the air inlet is fixedly formed in the upper end of the device body, and the limiting ring is fixedly installed at the left end of the device body. According to the safety valve long in service life, a threaded rod is rotated through a first adjusting grip, and due to the fact that threads corresponding to the threaded rod are arranged on the inner surface of a limiting ring, when the threaded rod rotates, the threaded rod can move left and right, so that a movable valve is driven to move left and right, the distance between the movable valve and a pressure relief opening is changed, and the pressure relief value of the safety valve is changed; and the pressure relief value of the device can be observed more visually through the pressure reading, so that the compatibility is better when the device is used.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valves, and specifically relates to a safety valve with a long service life. Background Technique

[0002] A safety valve, also known as a pressure relief valve, is a valve that remains closed by means of a spring, a weight, or other means and automatically opens when the pressure exceeds a given value. It belongs to the category of automatic valves. The safety valve plays a role in protecting the safety of equipment, controlling the pressure not to exceed the specified value, and plays an important role in protecting personal safety and equipment operation.

[0003] In the prior art CN219366905U, this patent proposed a safety valve with an extended service life. By setting a surfacing strengthening layer, it can effectively prevent the spring gasket from being damaged during the opening and closing of the valve, resulting in valve leakage, and greatly extend the service life of the valve; by setting the valve body, nozzle, and inlet end as a split structure, the inlet end material can be flexibly changed to make it the same or similar material as the customer's pipeline, avoiding complex post-weld heat treatment of dissimilar steels.

[0004] When the existing spring safety valve is in use, the distance of the spring is usually adopted, and the pressure set value is determined by the amount of spring deformation. However, most of the prior art adopts a fixed distance, that is, a fixed pressure value. When in use, it is necessary to purchase products corresponding to the pressure value, and the compatibility of the device is poor. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] The purpose of the utility model is to provide a safety valve with a long service life to solve the problem that most of the prior art adopts a fixed distance, that is, a fixed pressure value, and it is necessary to purchase products corresponding to the pressure value when in use, and the compatibility of the device is poor as mentioned in the above background technique.

[0007] (2) Technical Solution

[0008] To achieve the above purpose, the utility model provides the following technical solution: A safety valve with a long service life, including a main body mechanism. The main body mechanism includes a device main body, an air inlet, a limit ring, a threaded rod, a first adjustment handle, a pressure reading, a first pressure relief port, a second pressure relief port, a positioning piece, a telescopic rod, a movable spring, a movable spring plate, a movable valve, wear-resistant rubber, an air outlet, and a second adjustment handle. The air inlet is fixedly arranged at the upper end of the device main body, and the limit ring is fixedly installed at the left end of the device main body.

[0009] Preferably, the threaded rod is movably installed inside the limit ring. The inner surface of the limit ring is provided with threads corresponding to the threaded rod, and the first adjustment handle is fixedly installed at the left end of the threaded rod.

[0010] Preferably, the pressure reading is fixedly arranged at the outer end of the threaded rod, the first pressure relief port is fixedly arranged at the right end of the air inlet, and the second pressure relief port is fixedly arranged at the left end of the air inlet.

[0011] Preferably, the positioning piece is movably installed at the right end of the threaded rod, the left surface of the positioning piece is movably connected to the right surface of the threaded rod, and the telescopic rod is fixedly installed at the right end of the positioning piece.

[0012] Preferably, the movable spring is movably installed at the outer end of the telescopic rod, the left end of the movable spring is fixedly connected to the positioning piece, the movable spring plate is fixedly installed at the right end of the telescopic rod, and the right end of the movable spring is fixedly connected to the movable spring plate.

[0013] Preferably, the movable valve is fixedly installed at the right end of the movable spring plate, the wear-resistant rubber is fixedly installed at the outer end of the movable valve, and the outer surface of the wear-resistant rubber is slidably connected to the inner surface of the device body.

[0014] Preferably, the air outlet is fixedly arranged at the lower end of the device body, the first pressure relief port and the second pressure relief port are also arranged at the left and right ends of the air outlet, the second adjusting grip is movably installed at the right end of the device body, and the threaded rod, pressure reading, positioning piece, telescopic rod, movable spring, movable spring plate, movable valve and wear-resistant rubber are also arranged at the left end of the second adjusting grip.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. For this safety valve with a long service life, by setting the threaded rod, when the device is in use, the first adjusting grip can be rotated to rotate the threaded rod. Since the inner surface of the limiting ring is provided with threads corresponding to the threaded rod, when it rotates, the threaded rod will move left and right, thereby driving the movable valve to move left and right, so as to change the distance between the movable valve and the pressure relief port, and thus change the pressure relief value of the safety valve. The pressure relief value of the device can be more intuitively observed through the pressure reading, making its compatibility better when in use;

[0017] 2. For this safety valve with a long service life, by setting the first pressure relief port and the second pressure relief port, when the device is in use, the two movable valves can be adjusted respectively, so that the first pressure relief port and the second pressure relief port have different pressure relief values. When the device is in use, the pressure can be relieved in stages, avoiding that the pressure relief capacity of a single pressure relief port cannot meet the actual use and preventing the device from being damaged due to excessive pressure in the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 This is a schematic cross-sectional structure diagram of the present utility model;

[0020] Figure 3 This is a schematic cross-sectional structure diagram of the movable valve of the present utility model;

[0021] Figure 4 This is a schematic three-dimensional structure diagram of the first adjusting grip of the present utility model.

[0022] In the figure: 1. Main body mechanism; 101. Device main body; 102. Air inlet; 103. Limit ring; 104. Threaded rod; 105. First adjusting grip; 106. Pressure reading; 107. First pressure relief port; 108. Second pressure relief port; 109. Positioning piece; 110. Telescopic rod; 111. Movable spring; 112. Movable elastic plate; 113. Movable valve; 114. Wear-resistant rubber; 115. Air outlet; 116. Second adjusting grip. Specific implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1 - Figure 4 , the present utility model provides a technical solution: a safety valve with a long service life, including a main body mechanism 1, and the main body mechanism 1 includes a device main body 101, an air inlet 102, a limit ring 103, a threaded rod 104, a first adjusting grip 105, a pressure reading 106, a first pressure relief port 107, a second pressure relief port 108, a positioning piece 109, a telescopic rod 110, a movable spring 111, a movable elastic plate 112, a movable valve 113, a wear-resistant rubber 114, an air outlet 115 and a second adjusting grip 116. The air inlet 102 is fixedly arranged at the upper end of the device main body 101, and the limit ring 103 is fixedly installed at the left end of the device main body 101.

[0025] The threaded rod 104 is movably installed at the inner end of the limit ring 103. The inner surface of the limit ring 103 is provided with threads corresponding to the threaded rod 104. The first adjustment grip 105 is fixedly installed at the left end of the threaded rod 104. The pressure reading 106 is fixedly arranged at the outer end of the threaded rod 104. The first pressure relief port 107 is fixedly arranged at the right end of the air inlet 102. The second pressure relief port 108 is fixedly arranged at the left end of the air inlet 102. The positioning piece 109 is movably installed at the right end of the threaded rod 104. The left surface of the positioning piece 109 is movably connected to the right surface of the threaded rod 104. The telescopic rod 110 is fixedly installed at the right end of the positioning piece 109.

[0026] The movable spring 111 is movably installed at the outer end of the telescopic rod 110. The left end of the movable spring 111 is fixedly connected to the positioning piece 109. The movable spring plate 112 is fixedly installed at the right end of the telescopic rod 110. The right end of the movable spring 111 is fixedly connected to the movable spring plate 112. The movable valve 113 is fixedly installed at the right end of the movable spring plate 112. The wear-resistant rubber 114 is fixedly installed at the outer end of the movable valve 113. The outer surface of the wear-resistant rubber 114 is slidably connected to the inner surface of the device main body 101. The air outlet 115 is fixedly arranged at the lower end of the device main body 101. The first pressure relief port 107 and the second pressure relief port 108 are also arranged at the left and right ends of the air outlet 115. The second adjustment grip 116 is movably installed at the right end of the device main body 101. The left end of the second adjustment grip 116 is also provided with the threaded rod 104, the pressure reading 106, the positioning piece 109, the telescopic rod 110, the movable spring 111, the movable spring plate 112, the movable valve 113 and the wear-resistant rubber 114.

[0027] Working principle: For this safety valve with a long service life, by setting the threaded rod 104, when the device is in use, the threaded rod 104 can be rotated through the first adjustment grip 105. Since the inner surface of the limit ring 103 is provided with threads corresponding to the threaded rod 104, when it rotates, the threaded rod 104 will move left and right, thereby driving the movable valve 113 to move left and right, thus changing the distance between the movable valve 113 and the pressure relief port, and then changing the pressure relief value of the safety valve. The pressure relief value of the device can be more intuitively observed through the pressure reading 106, making its compatibility better when in use. For this safety valve with a long service life, by setting the first pressure relief port 107 and the second pressure relief port 108, when the device is in use, the two movable valves 113 can be adjusted respectively, so that the first pressure relief port 107 and the second pressure relief port 108 have different pressure relief values, enabling the device to relieve pressure in stages when in use, avoiding the situation that the pressure relief capacity of a single pressure relief port cannot meet the actual use and preventing the device from being damaged due to excessive pressure inside the device. Moreover, the outer side of the movable valve 113 of this device is provided with wear-resistant rubber 114, which can improve the sealing performance and also extend the service life of the movable valve 113.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present utility model, rather than a limitation on the protection scope of the present utility model. Any simple modification or equivalent replacement made by those of ordinary skill in the art to the technical solution of the present utility model shall not depart from the essence and scope of the technical solution of the present utility model.

Claims

1. A safety valve with a long service life, comprising a main body (1), characterized in that: The main body mechanism (1) comprises a device body (101), an air inlet (102), a limiting ring (103), a threaded rod (104), a first adjustment handle (105), a pressure reading (106), a first pressure relief port (107), a second pressure relief port (108), a positioning plate (109), a telescopic rod (110), a movable spring (111), a movable spring plate (112), a movable valve (113), wear-resistant rubber (114), an air outlet (115) and a second adjustment handle (116); the air inlet (102) is fixedly arranged at the upper end of the device body (101), and the limiting ring (103) is fixedly installed at the left end of the device body (101).

2. A safety valve with a long service life according to claim 1, characterized in that: The threaded rod (104) is movably mounted on the inner end of the limiting ring (103), the inner surface of the limiting ring (103) is provided with threads corresponding to the threaded rod (104), and the first adjustment handle (105) is fixedly mounted on the left end of the threaded rod (104).

3. A safety valve with a long service life according to claim 2, characterized in that: The pressure reading (106) is fixedly arranged at the outer end of the threaded rod (104), the first pressure relief port (107) is fixedly arranged at the right end of the air inlet (102), and the second pressure relief port (108) is fixedly arranged at the left end of the air inlet (102).

4. A safety valve with a long service life according to claim 3, characterized in that: The positioning piece (109) is movably mounted on the right end of the threaded rod (104); the left surface of the positioning piece (109) is movably connected to the right surface of the threaded rod (104); and the telescopic rod (110) is fixedly mounted on the right end of the positioning piece (109).

5. A safety valve with a long service life according to claim 4, characterized in that: The movable spring (111) is movably mounted on the outer end of the telescopic rod (110), the left end of the movable spring (111) is fixedly connected to the positioning plate (109), the movable spring plate (112) is fixedly mounted on the right end of the telescopic rod (110), and the right end of the movable spring (111) is fixedly connected to the movable spring plate (112).

6. A safety valve with a long service life according to claim 5, characterized in that: The movable valve (113) is fixedly mounted on the right end of the movable spring plate (112), the wear-resistant rubber (114) is fixedly mounted on the outer end of the movable valve (113), and the outer surface of the wear-resistant rubber (114) is slidably connected to the inner surface of the device body (101).

7. A safety valve with a long service life according to claim 6, characterized in that: The air outlet (115) is fixedly arranged at the lower end of the device body (101); the left and right ends of the air outlet (115) are also provided with a first pressure relief port (107) and a second pressure relief port (108); the second adjustment handle (116) is movably installed at the right end of the device body (101); the left end of the second adjustment handle (116) is also provided with a threaded rod (104), a pressure reading (106), a positioning sheet (109), a telescopic rod (110), a movable spring (111), a movable spring plate (112), a movable valve (113) and wear-resistant rubber (114).

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