Safety explosion-proof valve structure of chemical material storage tank

Abstract

The utility model discloses a safety explosion-proof valve structure of a chemical material storage tank, and relates to the technical field of chemical equipment. The device comprises a sealing pipe communicated with one side of a tank body, wherein an exhaust pipe is fixedly connected in the sealing pipe; a pressure relief assembly is arranged in the sealing pipe and comprises a pressure relief hole, the pressure relief hole is formed in an exhaust pipe in the sealing pipe, and a sealing sleeve is slidably connected to the peripheral face of the exhaust pipe. Through the arrangement of the pressure relief assembly, when the pressure in the tank body exceeds a set value, gas in the tank body can be exhausted through the exhaust pipe, the pressure relief effect is achieved, meanwhile, when the air pressure in the tank body is released, volatile material gas can be exhausted through the pressure relief hole and the exhaust hole, and after the gas is exhausted through the pressure relief hole, the volatile material gas can be exhausted through the exhaust hole. And the inner wall and the outer wall of the pressure relief hole can be cleaned through the first scraping plate and the second scraping plate correspondingly, it is avoided that materials are dried and block the interior of the exhaust hole, and the using safety is improved.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, and in particular relates to the structure of a safety explosion-proof valve for chemical material storage tanks. Background Technology

[0002] Safety explosion-proof valves for chemical material storage tanks are designed to prevent accidents caused by excessive pressure or abnormal temperature inside the tank, ensuring the safe operation of the storage tank. Explosion-proof valves are typically designed to automatically open when the pressure inside the tank reaches a certain value, releasing excessive pressure and preventing explosions or leaks due to excessive pressure. The valve body is the main load-bearing component of the explosion-proof valve and is usually made of corrosion-resistant and high-temperature-resistant metal materials (such as stainless steel, carbon steel, or alloy steel).

[0003] During the depressurization process, the chemical materials inside the current explosion-proof valves for chemical storage tanks will evaporate. The evaporated gaseous materials will adhere to the surface of the valve disc. After the gaseous materials dry on the valve disc surface, they will stick together, which will increase the resistance when the valve disc is reopened and also cause a decrease in sealing performance, affecting the safety of equipment use. To address these issues, we have provided a safety explosion-proof valve structure for chemical storage tanks. Utility Model Content

[0004] The purpose of this invention is to provide a safety explosion-proof valve structure for chemical material storage tanks. By combining the pressure relief component and the cleaning component, it solves the problem in the prior art where, during pressure relief, volatile gaseous materials adhere to the valve disc surface of the explosion-proof valve, leading to a decrease in sealing performance.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0006] This utility model relates to a safety explosion-proof valve structure for a chemical material storage tank, comprising a sealing pipe communicating with one side of the tank body, an exhaust pipe fixedly connected inside the sealing pipe; a pressure relief assembly is provided inside the sealing pipe, the pressure relief assembly including a pressure relief hole, the pressure relief hole being opened on the exhaust pipe inside the sealing pipe, a sealing sleeve being slidably connected to the outer circumferential surface of the exhaust pipe; a cleaning assembly is provided inside the sealing pipe, the cleaning assembly including a first scraper, the first scraper being fixed to the side of the sealing sleeve near the tank body, a rotating shaft being provided inside the exhaust pipe, a second scraper being provided on the rotating shaft corresponding to the position of the pressure relief hole, and a spring being sleeved on the outer circumferential surface of the exhaust pipe, one end of the spring being fixedly connected to the sealing sleeve, and the other end of the spring being fixedly connected to the end of the sealing pipe away from the tank body.

[0007] The present invention is further configured such that a magnet is fixedly connected to the side of the sealing sleeve away from the tank body, and a magnetic switch is fixedly connected to the end face of the sealing tube corresponding to the magnet.

[0008] The present invention is further configured such that the cleaning component includes a drive fan blade, the drive fan blade is fixedly connected to the surface of the rotating shaft, and the other end of the rotating shaft extends through to the outside of the sealing tube and is fixedly connected to a knob.

[0009] The present invention is further configured such that a sealing cap is fitted around the outer periphery of the end of the rotating shaft away from the tank body, an exhaust hole is provided on the surface of the sealing cap, the outer periphery of the exhaust pipe is connected to the inner wall of the sealing cap by a thread, one side of the first scraper is in contact with the outer periphery of the exhaust pipe, and the second scraper surface is in contact with the inner wall of the exhaust pipe.

[0010] The present invention is further configured such that rotating rods are fixedly connected to both sides of the second scraper along the axial direction of the rotating shaft, and the other end of the rotating rods is fixedly connected to the rotating shaft.

[0011] The present invention is further configured such that the surface of the second scraper contacts the inner wall of the exhaust pipe, and a filter screen is fixedly connected to the side of the rotating shaft surface corresponding to the pressure relief hole away from the tank body.

[0012] The present invention is further configured such that a guide block is fixedly connected to one end of the exhaust pipe near the tank body, one end of the rotating shaft is inserted into the guide hole of the guide block, and a limiting ring is provided at the other end of the rotating shaft corresponding to the position inside the sealing cap.

[0013] This utility model has the following beneficial effects: By setting up the pressure relief component, when the internal pressure of the tank exceeds the set value, the gas inside the tank can be discharged through the exhaust pipe, which plays a role in pressure relief. At the same time, when the internal pressure of the tank is released, the volatile material gas can be discharged through the pressure relief hole and the exhaust hole. After the gas is discharged from the pressure relief hole, the inner wall and outer wall of the pressure relief hole can be cleaned by the first scraper and the second scraper, respectively, to prevent the material from drying and clogging inside the exhaust hole, thereby improving the safety during use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0015] Figure 1 A 3D view of the structure of a safety explosion-proof valve for a chemical material storage tank.

[0016] Figure 2 This is a cross-sectional view of the sealing pipe in the structure of the explosion-proof valve for a chemical material storage tank.

[0017] Figure 3 This is a cross-sectional view of the exhaust pipe, sealing sleeve, and sealing cap in the structure of the explosion-proof valve for a chemical material storage tank.

[0018] Figure 4This is a schematic diagram showing the movement of the sealing sleeve in the structure of the safety explosion-proof valve for a chemical material storage tank.

[0019] In the attached diagram: 1. Tank body; 2. Sealing pipe; 3. Exhaust pipe; 4. Pressure relief hole; 5. Sealing sleeve; 6. First scraper; 7. Rotating shaft; 8. Second scraper; 9. Spring; 10. Magnet; 11. Magnetic switch; 12. Drive fan blade; 13. Knob; 14. Sealing cap; 15. Exhaust hole; 16. Rotating rod; 17. Filter screen; 18. Guide block. Detailed Implementation

[0020] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example 1

[0022] Please see Figure 1-4 This utility model relates to a safety explosion-proof valve structure for a chemical material storage tank, comprising a sealing pipe 2 connected to one side of the tank body 1, and an exhaust pipe 3 fixedly connected inside the sealing pipe 2. A pressure relief assembly is installed inside the sealing pipe 2, including a pressure relief hole 4 located on the exhaust pipe 3 inside the sealing pipe 2. The end of the exhaust pipe 3 near the tank body 1 is closed, while the end away from the tank body 1 is connected to the outside. A sealing sleeve 5 is slidably connected to the outer circumference of the exhaust pipe 3. A cleaning assembly is installed inside the sealing pipe 2, including a first scraper 6 fixed to the side of the sealing sleeve 5 near the tank body 1. A rotating shaft 7 is installed inside the exhaust pipe 3, and a second scraper 8 is positioned on the rotating shaft 7 corresponding to the pressure relief hole 4.

[0023] Specifically: There are two pressure relief holes 4, located at the top and bottom of the outer circumference of the exhaust pipe 3, respectively. One end of the sealing pipe 2 is open for communication with the tank body 1, and the other end of the sealing pipe 2 is sealed and passes through the exhaust pipe 3. The inside of the sealing sleeve 5 corresponding to the pressure relief hole 4 is made of rubber. When the sealing sleeve 5 moves to the surface of the pressure relief hole 4, it can seal the pressure relief hole 4. The first scraper 6 is fixed to one side of the sealing sleeve 5 and can move with the sealing sleeve 5. The second scraper 8 is fixed to the surface of the rotating shaft 7. The second scraper 8 extends radially along the rotating shaft 7 and contacts the inner wall of the exhaust pipe 3, and can rotate with the rotating shaft 7.

[0024] A spring 9 is fitted on the outer circumference of the exhaust pipe 3. One end of the spring 9 is fixedly connected to the sealing sleeve 5, and the other end of the spring 9 is fixedly connected to the end of the sealing pipe 2 away from the tank body 1.

[0025] Example 2

[0026] Please see Figure 1-4Based on Embodiment 1, a magnet 10 is fixedly connected to the side of the sealing sleeve 5 away from the tank 1, and a magnetic switch 11 is fixedly connected to the end face of the magnet 10 inside the sealing tube 2. The cleaning assembly also includes a drive fan blade 12, which is fixedly connected to the surface of the rotating shaft 7. The other end of the rotating shaft 7 extends through to the outside of the sealing tube 2. A sealing cap 14 is fitted around the outer periphery of the end of the rotating shaft 7 that extends out of the exhaust pipe 3. An exhaust hole 15 is opened on the surface of the sealing cap 14. The outer periphery of the exhaust pipe 3 is threadedly connected to the inner wall of the sealing cap 14. A knob 13 is fixedly connected to the end of the rotating shaft 7 that extends out of the sealing cap 14. One side of the first scraper 6 is in contact with the outer periphery of the exhaust pipe 3, and the surface of the second scraper 8 is in contact with the inner wall of the exhaust pipe 3. Rotating rods 16 are fixedly connected to both sides of the second scraper 8 along the axial direction of the rotating shaft 7, and the other end of the rotating rods 16 is fixedly connected to the rotating shaft 7. A filter screen 17 is fixedly connected to the surface of the rotating shaft 7 on the side away from the tank 1 corresponding to the pressure relief hole 4. The filter screen 17 is used to filter the exhaust. A guide block 18 is fixedly connected to one end of the exhaust pipe 3 near the tank body 1. One end of the rotating shaft 7 is inserted into the guide hole of the guide block 18, and a limiting ring is set at the other end of the rotating shaft 7 corresponding to the inner side of the sealing cap 14. The guide block 18, the limiting ring, and the knob 13 work together to limit the rotation of the rotating shaft 7 and prevent the rotating shaft 7 from moving axially.

[0027] Specifically: Spring 9 has a compression and energy storage function, which can elastically reset the sealing sleeve 5. Magnetic switch 11 is connected to an external alarm. When the sealing sleeve 5 moves the magnet 10, magnetic switch 11 senses the position of the sealing sleeve 5. When the sealing sleeve 5 is rapidly pushed by air pressure, it can cause the magnet 10 to contact the magnetic switch 11, transmitting the signal to the external alarm for warning. Drive fan blade 12 is fixed to the surface of the rotating shaft 7, and can rotate when airflow passes through the exhaust pipe 3.

[0028] The working principle of this utility model is as follows: When the gas inside the tank 1 increases, it is connected to the tank 1 through the sealing pipe 2. The high-pressure gas inside the tank 1 will enter the sealing pipe 2 and use the gas pressure to push the sealing sleeve 5 to move. When the sealing sleeve 5 moves, it will remove the obstruction of the pressure relief hole 4, allowing the high-pressure gas to be discharged into the exhaust pipe 3 through the pressure relief hole 4, and finally discharged through the exhaust hole 15, thus achieving the function of pressure relief.

[0029] When high-pressure gas enters the exhaust pipe 3, the airflow can drive the fan blade 12 and the rotating shaft 7 to rotate. The rotating shaft 7, together with the rotating rod 16, drives the second scraper 8 to rotate, scraping away the impurities adhering to the inside of the exhaust pipe 3. At the same time, after the gas is depressurized, the spring 9 will reset the sealing sleeve 5. The sealing sleeve 5 drives the first scraper 6 to move, scraping away the impurities on the surface of the exhaust pipe 3, thus achieving a cleaning effect. This can effectively prevent volatile material impurities from adhering to the exhaust hole 15 and improve the sealing effect.

[0030] All standard parts used in this invention can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through the control unit. The control circuit of the control unit can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Therefore, the control method and circuit connection will not be explained in detail in this invention.

[0031] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. The structure of a safety explosion-proof valve for a chemical material storage tank, characterized in that: Includes a sealing pipe (2) connected to one side of the tank (1), and an exhaust pipe (3) is fixedly connected inside the sealing pipe (2); The sealing tube (2) is provided with a pressure relief component, which includes a pressure relief hole (4). The pressure relief hole (4) is opened on the exhaust pipe (3) inside the sealing tube (2). A sealing sleeve (5) is slidably connected to the outer circumferential surface of the exhaust pipe (3). The sealing tube (2) is equipped with a cleaning component, which includes a first scraper (6) fixed to the side of the sealing sleeve (5) near the tank (1). The exhaust pipe (3) is equipped with a rotating shaft (7), and a second scraper (8) is provided at the position of the rotating shaft (7) corresponding to the pressure relief hole (4). A spring (9) is sleeved on the outer circumference of the exhaust pipe (3). One end of the spring (9) is fixedly connected to the sealing sleeve (5), and the other end of the spring (9) is fixedly connected to the end of the sealing tube (2) away from the tank (1).

2. The safety explosion-proof valve structure for a chemical material storage tank according to claim 1, characterized in that: A magnet (10) is fixedly connected to the side of the sealing sleeve (5) away from the tank body (1), and a magnetic switch (11) is fixedly connected to the end face of the sealing tube (2) corresponding to the magnet (10).

3. The safety explosion-proof valve structure for a chemical material storage tank according to claim 1, characterized in that: The cleaning assembly also includes a drive fan blade (12), which is fixedly connected to the surface of the rotating shaft (7). The other end of the rotating shaft (7) extends through the outside of the sealing tube (2) and is fixedly connected to a knob (13).

4. The safety explosion-proof valve structure for a chemical material storage tank according to claim 1, characterized in that: A sealing cap (14) is fitted around the outer periphery of the rotating shaft (7) away from the tank body (1). An exhaust hole (15) is opened on the surface of the sealing cap (14). The outer periphery of the exhaust pipe (3) is connected to the inner wall of the sealing cap (14) by a thread. One side of the first scraper (6) is in contact with the outer periphery of the exhaust pipe (3), and the surface of the second scraper (8) is in contact with the inner wall of the exhaust pipe (3).

5. The safety explosion-proof valve structure for a chemical material storage tank according to claim 1, characterized in that: The second scraper (8) has a rotating rod (16) fixedly connected to both sides along the axial direction of the rotating shaft (7), and the other end of the rotating rod (16) is fixedly connected to the rotating shaft (7).

6. The safety explosion-proof valve structure for a chemical material storage tank according to claim 1, characterized in that: A filter screen (17) is fixedly connected to the side of the rotating shaft (7) away from the tank body (1) corresponding to the pressure relief hole (4).

7. The safety explosion-proof valve structure for a chemical material storage tank according to claim 4, characterized in that: The exhaust pipe (3) has a guide block (18) fixedly connected to one end near the tank (1), and one end of the rotating shaft (7) is inserted into the guide hole of the guide block (18). The other end of the rotating shaft (7) is provided with a limiting ring corresponding to the position inside the sealing cap (14).

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