Chemical safety valve capable of preventing mistaken touch

Abstract

The utility model discloses an anti-mistaken touch chemical safety valve, which relates to the technical field of safety valves and comprises a safety valve body, the safety valve body comprises a valve rod, a connecting block is mounted at the top of the safety valve body, the top end of the valve rod penetrates through the connecting block in a sliding manner, and an anti-falling block is connected to the top end of the valve rod. The valve rod is sleeved with a disc in a sliding mode. The bottom of the disc is connected with a sliding sleeve arranged on the periphery of the connecting block in a sliding and sleeving mode, the inner wall of the sliding sleeve is connected with a sliding shaft, and the periphery of the connecting block is provided with an L-shaped sliding rail in sliding fit with the sliding shaft. A reset piece used for driving the disc to rotate and reset is installed on the connecting block. According to the safety valve, through the arrangement of the safety valve body, the valve rod, the connecting block, the anti-falling block, the disc, the sliding sleeve and the sliding shaft, the situation that the safety valve is opened due to the fact that clothes or toolkits and the like hang the disc and pull the valve rod during overhauling operation of workers can be reduced, accidents are reduced, and the situation of accidental touch is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of safety valve, concretely is a chemical safety valve of preventing mistaken touch. BACKGROUND

[0002] Safety valve is the closing piece under the action of external force and is in the normally closed state, when the medium pressure in the equipment or pipeline rises more than the specified value, the special valve is discharged to the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. Safety valve belongs to automatic valve, mainly used in boiler, pressure vessel and pipeline, control pressure does not exceed the specified value, plays an important protective role to personal safety and equipment operation.

[0003] In the process of normal use, the valve clack and the backflushing disc are lifted by the excessive fluid pressure in the pipeline, and then the valve rod is lifted by the backflushing disc, thereby the pressure in the pipeline is released, wherein the valve rod can be manually lifted by the staff, usually has a connecting rope or a lifting rod on the side, a rotating lifting plate is arranged on the top of the valve rod, the staff lifts the lifting rod, one end of the lifting plate is lifted by the lifting rod, the other end of the lifting plate rotates, the middle segment of the lifting plate lifts the top end of the valve rod, thereby the valve clack and the backflushing disc are synchronously lifted to achieve the pressure relief effect.

[0004] However, the above structure appears mistaken touch in the process of maintenance and the like by the clothes of the staff in the process of use, thereby the safety opening affects the pressure in the pipeline, which can cause abnormal pressure in the pipeline and can cause the pipeline to be broken, especially in the chemical industry, the harmful gas is transported in the pipeline, once the pipeline is broken, the life of the staff is in danger. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a chemical safety valve of preventing mistaken touch to solve the problems in the above background.

[0006] In order to solve the above technical problems, the utility model provides the following technical scheme, including safety valve body, the safety valve body includes valve rod, the top of safety valve body is installed with connecting block, the top end of valve rod is slidingly penetrated through connecting block, the top end of valve rod is connected with anti -drop block, the valve rod is slidably sleeved with disc;

[0007] The bottom of disc is connected with sliding sleeve that is slidably sleeved on the outer periphery of connecting block, the inner wall of sliding sleeve is connected with sliding shaft, the outer periphery of connecting block is provided with L-shaped slide rail that is slidably connected with sliding shaft;

[0008] The connecting block is installed with reset piece for driving disc rotation reset.

[0009] Preferably, the reset member comprises a reset spring; the reset spring is sleeved on the valve rod, and two ends of the reset spring are fixedly connected with the bottom surface of the disc and the top surface of the connecting block respectively.

[0010] Preferably, the top surface of the disc is provided with a placing groove for placing the anti-dropping block, and a gap exists between the bottom surface of the anti-dropping block and the inner wall of the bottom of the placing groove.

[0011] Preferably, the end of the horizontal section of the L-shaped slide rail is provided with a vertical upward limiting groove, and the maximum displacement distance of the slide shaft in the limiting groove is the same as the maximum displacement distance of the anti-dropping block in the placing groove.

[0012] Preferably, the inner wall of the side of the limiting groove close to the vertical section of the L-shaped slide rail is a slope.

[0013] Preferably, the top end of the vertical section of the L-shaped slide rail is provided with an opening.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The safety valve body, the valve rod, the connecting block, the anti-dropping block, the disc, the sliding sleeve and the slide shaft can reduce the situation that clothes or a tool bag is hung on the disc to pull the valve rod to open the safety valve during the maintenance operation of the staff, reduce the occurrence of accidents and reduce the situation of accidental touch. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structure sectional view of the utility model;

[0017] Fig. 2 It is a structure sectional view of the top of the utility model;

[0018] Fig. 3 It is a structure schematic view of the connecting block in the utility model.

[0019] In the drawing: 1, safety valve body; 2, valve rod; 3, connecting block; 4, anti-dropping block; 5, disc; 6, sliding sleeve; 7, slide shaft; 8, L-shaped slide rail; 9, reset spring; 10, limiting groove; 11, slope. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] Please refer to Figs. 1-3As shown, the embodiment provides a false touch prevention chemical safety valve, which comprises a safety valve body 1. It is to be noted that the main components of the safety valve body 1 include a valve seat, an adjusting ring, a valve clack, a backflush disc, a valve stem, a valve body, a guide sleeve, a spring, a valve cover, an adjusting screw, and a valve cap. They are the existing structures, and no redundant working principle introduction is made.

[0022] The safety valve body 1 comprises a valve stem 2. A connecting block 3 is mounted on the top of the safety valve body 1. The top end of the valve stem 2 is slidably penetrated through the connecting block 3. A anti-loosing block 4 is connected to the top end of the valve stem 2. A disc 5 is slidably sleeved on the valve stem 2. The top surface of the disc 5 is provided with a placing groove for placing the anti-loosing block 4. There is a gap between the bottom surface of the anti-loosing block 4 and the bottom inner wall of the placing groove.

[0023] The bottom of the disc 5 is connected with a sliding sleeve 6 which is slidably sleeved on the outer periphery of the connecting block 3. The inner wall of the sliding sleeve 6 is connected with a sliding shaft 7. The outer periphery of the connecting block 3 is provided with an L-shaped sliding rail 8 which is slidably matched with the sliding shaft 7. The top end of the vertical section of the L-shaped sliding rail 8 is provided with an opening. The sliding sleeve 6 can slide up and down on the connecting block 3 or rotate on the connecting block 3.

[0024] The connecting block 3 is mounted with a reset member for driving the disc 5 to rotate and reset.

[0025] The reset member comprises a reset spring 9. The reset spring 9 is sleeved on the valve stem 2, and the two ends of the reset spring 9 are fixedly connected with the bottom surface of the disc 5 and the top surface of the connecting block 3, respectively. The reset spring 9 can be used as a torsion spring. The disc 5 is driven by the reset spring 9 to rotate and reset, and the disc 5 can also be driven by the reset spring 9 to move downward and reset.

[0026] The end of the horizontal section of the L-shaped sliding rail 8 is provided with a vertical upward limiting groove 10. The maximum displacement distance of the sliding shaft 7 in the limiting groove 10 is the same as the maximum displacement distance of the anti-loosing block 4 in the placing groove. The inner wall of the side close to the vertical section of the L-shaped sliding rail 8 of the limiting groove 10 is a slope 11.

[0027] In actual use, when the maintenance personnel overhauls and maintains, when clothes hang the disc 5 or tool bag and the like hang the disc 5, the clothes can drive the disc 5 to lift up, because the disc 5 is a circular structure, the clothes cannot drive the disc 5 to rotate a large angle, when the clothes pull the disc 5 to stretch upward, the slide bush 6 and the slide shaft 7 are lifted up by the disc 5, when the disc 5 cannot rotate a large angle, the slide shaft 7 cannot rotate to the communication place of the horizontal section and the vertical section of the L-shaped slide rail 8, when the slide shaft 7 rises, the slide shaft 7 enters the limiting groove 10, when the slide shaft 7 rotates a little angle, when the slide shaft 7 rises, the slide shaft 7 abuts against the inclined surface 11 on the side of the limiting groove 10, the slide shaft 7 slides upward along the inclined surface of the inclined surface 11, when the slide shaft 7 abuts against the top of the limiting groove 10, the disc 5 synchronously rises, at this time, the bottom surface of the anti-dropping block 4 and the inner wall at the bottom of the disc 5 upper placing groove are in contact, the disc 5 cannot drive the anti-dropping block 4 and the valve rod 2 to rise, and the safety valve body 1 can be prevented from being opened due to the clothes pulling the disc 5 and the valve rod 2 to rise.

[0028] The working principle is that: in the chemical plant, the safety valve is used in various pipelines, the safety valve is used to release the high pressure in the pipeline, so as to reduce the damage caused by the high pressure to the pipeline, when the staff manually releases pressure, the disc 5 is rotated, the slide bush 6 and the slide shaft 7 are synchronously rotated by the disc 5, the slide shaft 7 slides in the horizontal section of the L-shaped slide rail 8, when the slide shaft 7 slides to the bottom opening of the vertical section of the L-shaped slide rail 8, the disc 5 is lifted up again, the slide bush 6 is synchronously lifted up, the slide shaft 7 is lifted up in the vertical section of the L-shaped slide rail 8 by the slide bush 6, at the same time, the disc 5 moves on the top end of the valve rod 2, when the bottom of the placing groove and the bottom surface of the anti-dropping block 4 are in contact, the anti-dropping block 4 is lifted up by the disc 5, the valve rod 2 is lifted up by the anti-dropping block 4, the valve clack and the recoil disc are lifted up by the valve rod 2, the top opening of the valve seat is opened, and the pressure in the pipeline is released.

[0029] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A false touch prevention chemical safety valve, characterized in that, The utility model provides a safety valve, including safety valve body (1), the safety valve body (1) includes valve stem (2), the top of safety valve body (1) is installed with connecting block (3), the top end of valve stem (2) is slid and is penetrated through connecting block (3), the top end of valve stem (2) is connected with anti -drop block (4), the top end of valve stem (2) is slid and is equipped with disc (5); The bottom of disc (5) is connected with sliding sleeve (6) that is slid and is equipped outside the circumference of connecting block (3), the inner wall of sliding sleeve (6) is connected with sliding shaft (7), the outer periphery of connecting block (3) is equipped with L -shaped slide rail (8) with sliding cooperation with sliding shaft (7); Reset piece is installed on connecting block (3) for driving disc (5) rotation reset.

2. The anti-mis-touch chemical safety valve according to claim 1, wherein, The reset piece includes reset spring (9);Reset spring (9) is equipped on valve stem (2), and the both ends of reset spring (9) are fixedly connected with the bottom surface of disc (5) respectively, the top surface of connecting block (3).

3. The anti-mis-touch chemical safety valve according to claim 1, wherein, The top surface of disc (5) is equipped with the placement groove for placing anti -drop block (4), and the bottom surface of anti -drop block (4) and the bottom inner wall of placement groove exist gap.

4. The anti-mis-touch chemical safety valve according to claim 3, characterized in that, The end of L -shaped slide rail (8) horizontal section is equipped with vertical upward limit slot (10), and the maximum displacement distance of sliding shaft (7) in limit slot (10) and the maximum displacement distance of anti -drop block (4) in placement groove are same.

5. The anti-mis-touch chemical safety valve according to claim 4, wherein, The inner wall of limit slot (10) near the vertical section of L -shaped slide rail (8) is inclined surface (11).

6. The anti-mis-touch chemical safety valve according to claim 5, wherein, The top end of L -shaped slide rail (8) vertical section is provided with opening.

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