Anti-static and anti-corrosion safety valve

Abstract

The utility model discloses an anti-static corrosion-resistant safety valve which comprises a valve body and a valve cover, the valve cover is fixedly arranged at the upper end of the valve body through a bolt, a valve cavity is formed in the valve body, a valve element is arranged in the valve cavity, an elastic part is arranged at the upper end of the valve element, and an adjusting device is arranged at the upper end of the elastic part. The lower end of the valve cavity is communicated with an inflow channel, one side of the inflow channel is communicated with an outflow channel, a pressure relief channel is arranged on one side of the valve cavity in a communicated mode, a limiting plate is fixedly arranged at the position, corresponding to the lower end of the pressure relief channel, of the valve element, the pressure relief channel and the outflow channel are obliquely arranged with the inner portion higher than the outer portion, and an anti-static layer is arranged outside the valve body. Anti-corrosion lining layers are arranged on the inner side of the valve body and the outer surface of the valve element. The anti-static pressure relief valve is anti-static and anti-corrosion, and the pressure relief pressure and the circulation amount can be adjusted and changed.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valves, and more specifically to an anti-static and anti-corrosion safety valve. Background Art

[0002] Safety valves are special valves whose opening and closing parts are in a normally closed state under the action of external forces. When the pressure of the medium fluid in the equipment or pipeline exceeds the specified value, the medium fluid is discharged to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. Safety valves belong to automatic valves and are mainly used in boilers, pressure vessels and pipelines to control the pressure not to exceed the specified value, which plays an important protective role in personal safety and equipment operation. The sealing strength of the sealing valve core of the safety valve in the prior art is difficult to adjust, which makes the debugging of the safety valve more cumbersome. The opening size of the pressure relief port of the sealing valve cannot be adaptively changed according to the pressure, which leads to the possibility of safety accidents if the pressure suddenly increases and the pressure relief speed cannot be increased in time.

[0003] In the prior art, a corrosion-resistant lined safety valve with a publication number of CN220668488U drives the limit block to rise together with the sealing valve core in the process of overcoming the rising spring pressure, so that the rising limit block can contact the regulating valve block, thereby increasing the volume of the pressure-dividing chamber to increase the pressure relief flow of the pressure-dividing chamber. The process can automatically adjust the flow of the pressure-dividing chamber along with the rising stroke of the sealing valve core, ensuring that the greater the medium flow pressure, the faster the pressure relief rate of the safety valve, effectively improving the safety of the use of the safety valve; however, the utility model also has the following problems: when the pressure on the valve core exceeds the specified value, but the pressure does not increase, the stopper flowing into the pressure-dividing chamber will rush upward to squeeze the regulating valve block, causing the flow rate to suddenly increase, thereby causing the pressure to decrease instantly, and the valve core will easily hit the valve seat, reducing the service life of the valve core and the valve seat. In addition, when the pressure returns to normal, the pressure relief chamber is in a horizontal state, so a certain stopper will be retained in the pressure relief chamber, which is easy to cause corrosion of the pressure relief chamber. Therefore, the utility model proposes an anti-static and corrosion-resistant safety valve. Utility Model Content

[0004] The utility model aims to provide an anti-static and anti-corrosion safety valve, which can prevent static electricity and corrosion, and the pressure relief pressure and the flow rate can be adjusted and changed.

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

[0006] An anti-static and corrosion-resistant safety valve comprises a valve body and a valve cover, the valve cover is fixedly provided on the upper end of the valve body by bolts, a valve cavity is provided in the valve body, a valve core is provided in the valve cavity, an elastic part is provided on the upper end of the valve core, an adjusting device is provided on the upper end of the elastic part, the lower end of the valve cavity is communicated with an inflow channel, one side of the inflow channel is communicated with an outflow channel, a pressure relief channel is provided on one side of the valve cavity, a limit plate is fixedly provided on the lower end of the valve core corresponding to the pressure relief channel, the pressure relief channel and the outflow channel are both inclined with the inner side higher and the outer side lower, an anti-static layer is provided on the outer side of the valve body, and an anti-corrosion lining layer is provided on the inner side of the valve body and the outer surface of the valve core.

[0007] By adopting the above technical solution, the utility model has the following advantages:

[0008] The setting of the anti-corrosion lining layer of the utility model can isolate the medium from the valve body and the valve core, effectively preventing the medium from directly contacting the valve body and the valve core, thereby playing an anti-corrosion role. The material of the anti-corrosion lining layer is polytetrafluoroethylene propylene. The inclined setting of the pressure relief channel and the outflow channel can effectively prevent the medium from being retained in the channel, and further prevent the medium from corroding the valve body; the setting of the limit plate, the elastic part and the adjusting device of the utility model can change the pressure of the valve core movement by controlling the downward movement of the elastic part by the adjusting device, thereby realizing the adjustment of the pressure relief pressure. The limit plate moves with the movement of the valve core, so that the size of the opening of the pressure relief channel changes with the pressure on the valve core, thereby realizing the adjustment of the flow rate; the setting of the anti-static layer of the utility model makes the valve body have an effective anti-static function, and the material of the anti-static layer is polyvinyl chloride anti-static film.

[0009] Furthermore, the elastic part includes a high-elasticity spring and a clamping block, the upper and lower ends of the high-elasticity spring are fixed with clamping blocks, the adjusting device includes a movable plate, the lower end of the movable plate and the upper end of the valve core are provided with clamping grooves, and the clamping block is clamped in the corresponding clamping groove.

[0010] By adopting the above technical solution, the utility model has the following advantages:

[0011] The high-elastic spring of the utility model plays a role in squeezing the valve core, so that when the medium pressure is normal, the pressure of the high-elastic spring can squeeze the valve core to always seal the valve cavity, so that the medium can flow normally.

[0012] Furthermore, a threaded column is rotatably connected to the upper end of the movable plate, the upper end of the threaded column passes through the upper end of the valve cover and is fixedly connected to the handle, and the threaded column is threadedly connected to the valve cover.

[0013] By adopting the above technical solution, the utility model has the following advantages:

[0014] The arrangement of the handle and the threaded column of the utility model enables the movable plate to be pressed downward when the threaded column is rotated to move downward, thereby pressing the high-elastic spring, thereby changing the pressure on the valve core, so that the pressure relief pressure can be adjusted.

[0015] Furthermore, sliders are fixedly provided at both ends of the movable plate, and sliding grooves are provided at both ends of the inner side of the valve cover at positions corresponding to the sliders, and the sliders are clamped in the corresponding sliding grooves.

[0016] By adopting the above technical solution, the utility model has the following advantages:

[0017] The arrangement of the sliding block and the sliding groove of the utility model enables the movable plate to only move up and down horizontally.

[0018] Furthermore, inner annular grooves are provided at corresponding positions of the lower end of the valve cover and the upper end of the valve body, sealing rings are clamped between the inner annular grooves, and a plurality of extrusion springs are fixedly provided between the sealing rings and the corresponding inner annular grooves.

[0019] By adopting the above technical solution, the utility model has the following advantages:

[0020] The arrangement of the sealing ring and the extrusion spring of the utility model strengthens the sealing performance between the valve cover and the valve body, and can effectively prevent the leakage of the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model.

[0023] Figure numerals: 1. valve body; 101. valve chamber; 102. inflow channel; 103. outflow channel; 104. pressure relief channel; 2. movable plate; 201. slider; 3. valve cover; 301. slide groove; 4. extrusion spring; 5. sealing ring; 6. inner ring groove; 7. clamping groove; 8. clamping block; 9. limit plate; 10. valve core; 11. high elastic spring. DETAILED DESCRIPTION

[0024] like Figure 1As shown, in the specific embodiment, an anti-static and anti-corrosion safety valve includes a valve body 1 and a valve cover 3. The valve cover 3 is fixedly provided on the upper end of the valve body 1 by bolts. A valve cavity 101 is provided in the valve body 1. A valve core 10 is provided in the valve cavity 101. An elastic portion is provided on the upper end of the valve core 10. An adjusting device is provided on the upper end of the elastic portion. The lower end of the valve cavity 101 is communicated with an inflow channel 102. One side of the inflow channel 102 is communicated with an outflow channel 103. A pressure relief channel 104 is provided on one side of the valve cavity 101. A limit plate 9 is fixedly provided on the lower end of the valve core 10 corresponding to the pressure relief channel 104. The pressure relief channel 104 and the outflow channel 103 are both inclinedly arranged with the inner side being higher and the outer side being lower. An anti-static layer is provided on the outside of the valve body 1. An anti-corrosion lining layer is provided on the inner side of the valve body 1 and the outer surface of the valve core 10. The elastic portion includes a high elastic spring. Spring 11 and block 8, the high-elastic spring 11 is fixed with a block 8 at both ends, the adjusting device includes a movable plate 2, the lower end of the movable plate 2 and the upper end of the valve core 10 are provided with a slot 7, the block 8 is clamped in the corresponding slot 7; the upper end of the movable plate 2 is rotatably connected with a threaded column, the upper end of the threaded column passes through the upper end of the valve cover 3 and is fixedly connected to the handle, and the threaded column is threadedly connected to the valve cover 3; both ends of the movable plate 2 are fixed with sliders 201, the positions of the two ends of the inner side of the valve cover 3 corresponding to the slider 201 are communicated with a slide groove 301, and the slider 201 is clamped in the corresponding slide groove 301; the lower end of the valve cover 3 and the corresponding position of the upper end of the valve body 1 are provided with an inner ring groove 6, a sealing ring 5 is clamped between the inner ring groove 6 and the inner ring groove 6, and a number of extrusion springs 4 are fixed between the sealing ring 5 and the corresponding inner ring groove 6.

[0025] Through the above settings, the setting of the anti-corrosion lining layer of the utility model can isolate the medium from the valve body 1 and the valve core 10, effectively preventing the medium from directly contacting the valve body 1 and the valve core 10, thereby playing an anti-corrosion role. The material of the anti-corrosion lining layer is polytetrafluoroethylene propylene. The inclined setting of the pressure relief channel 104 and the outflow channel 103 can effectively prevent the medium from being retained in the channel, and further prevent the medium from corroding the valve body 1; the setting of the limit plate 9, the elastic part and the adjusting device of the utility model can change the pressure of the valve core 10 by controlling the downward movement of the elastic part through the adjusting device, thereby realizing the adjustment of the pressure relief pressure, and the limit plate 9 moves with the movement of the valve core 10, so that the size of the opening of the pressure relief channel 104 changes with the pressure on the valve core 10, thereby realizing the adjustment of the flow rate; the anti-static layer of the utility model The setting makes the valve body 1 have an effective anti-static function, and the material of the anti-static layer is a polyvinyl chloride anti-static film; the setting of the high-elastic spring 11 of the utility model plays the role of squeezing the valve core 10, so that when the medium pressure is normal, the pressure of the high-elastic spring 11 can squeeze the valve core 10 to always seal the valve cavity 101, so that the medium can flow normally; the setting of the handle and the threaded column of the utility model makes it possible to squeeze the movable plate 2 downward when the threaded column is rotated downward, thereby squeezing the high-elastic spring 11, thereby changing the pressure on the valve core 10, so that the pressure relief pressure can be adjusted; the setting of the slider 201 and the slide groove 301 of the utility model makes the movable plate 2 only move up and down horizontally; the setting of the sealing ring 5 and the squeezing spring 4 of the utility model strengthens the sealing between the valve cover 3 and the valve body 1, which can effectively prevent medium leakage.

[0026] Working principle: When in use, the inflow channel 102 and the outflow channel 103 of the utility model are connected to the inflow pipe and the outflow pipe respectively, and the pressure relief channel 104 is connected to the discharge pipe. When the medium circulates normally, the medium will enter the inflow channel 102 from the inflow pipe, then enter the outflow channel 103, and finally enter the outflow pipe to realize circulation. When the pressure in the pipe is too high, the pressure will push the valve core 10 to squeeze the high elastic spring 11, and the medium will be discharged through the pressure relief channel 104 to gradually reduce the pressure in the pipe until it returns to normal. When the pressure in the pipe returns to normal, the pressure of the high elastic spring 11 will push the valve core 10 back to its original position. The greater the pressure in the pipe, the greater the upward movement distance of the valve core 10. At this time, the limit plate 9 As the valve core 10 gradually moves upward, the flow rate can be adjusted according to the pressure. The threaded column can be driven downward by turning the handle, thereby driving the movable plate 2 to squeeze the high-elastic spring 11, so that the pressure of the valve core 10 moving upward is increased, thereby achieving adjustable pressure relief pressure. The anti-static layer and the anti-corrosion lining layer can effectively realize the anti-static and anti-corrosion functions of the utility model. The inclination of the outflow channel 103 and the pressure relief channel 104 makes it difficult for the cutoff to be retained in the channel, further preventing corrosion on the inner side of the valve body 1. The anti-static layer, anti-corrosion lining layer, high-elastic spring 11, extrusion spring 4, threaded column and sealing ring 5 of the utility model are all disclosed in the prior art, so this application will not go into too much detail.

[0027] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. An anti-static and anti-corrosion safety valve, comprising a valve body (1) and a valve cover (3), wherein the valve cover (3) is fixedly provided on the upper end of the valve body (1) by bolts, and characterized in that: The valve body (1) is provided with a valve cavity (101), the valve cavity (101) is provided with a valve core (10), the upper end of the valve core (10) is provided with an elastic portion, the upper end of the elastic portion is provided with an adjusting device, the lower end of the valve cavity (101) is communicated with an inflow channel (102), one side of the inflow channel (102) is communicated with an outflow channel (103), one side of the valve cavity (101) is communicated with a pressure relief channel (104), a limit plate (9) is fixedly provided at the lower end of the valve core (10) corresponding to the pressure relief channel (104), the pressure relief channel (104) and the outflow channel (103) are both inclinedly arranged with the inner side higher than the outer side, the outer side of the valve body (1) is provided with an antistatic layer, and the inner side of the valve body (1) and the outer surface of the valve core (10) are both provided with an anti-corrosion lining layer.

2. The anti-static and anti-corrosion safety valve according to claim 1, characterized in that: The elastic part comprises a high-elasticity spring (11) and a clamping block (8), the clamping blocks (8) are fixedly provided at both the upper and lower ends of the high-elasticity spring (11), the regulating device comprises a movable plate (2), the lower end of the movable plate (2) and the upper end of the valve core (10) are both provided with a clamping groove (7), and the clamping block (8) is clamped in the corresponding clamping groove (7).

3. The anti-static and anti-corrosion safety valve according to claim 2 is characterized in that: The upper end of the movable plate (2) is rotatably connected with a threaded column, the upper end of the threaded column passes through the upper end of the valve cover (3) and is fixedly connected to the handle, and the threaded column is threadedly connected to the valve cover (3).

4. The anti-static and anti-corrosion safety valve according to claim 3 is characterized in that: Slide blocks (201) are fixedly provided at both ends of the movable plate (2), and slide grooves (301) are provided at both ends of the inner side of the valve cover (3) at positions corresponding to the slide blocks (201), and the slide blocks (201) are clamped in the corresponding slide grooves (301).

5. The anti-static and anti-corrosion safety valve according to claim 1, characterized in that: Inner ring grooves (6) are provided at corresponding positions of the lower end of the valve cover (3) and the upper end of the valve body (1), a sealing ring (5) is clamped between the inner ring grooves (6), and a plurality of extrusion springs (4) are fixedly provided between the sealing ring (5) and the corresponding inner ring grooves (6).

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