Chlorine feeding check device for chlorination kettle

Abstract

The utility model discloses a chlorination kettle chlorine feeding check valve device relates to chlorine check valve device technical field, include: gland, two gland screws, gland gasket, valve body, tetrafluoro ball. Gland and valve body swing joint. Gland gasket is installed in the middle of gland and valve body. Two gland screws respectively pass through gland and gland gasket and are screwed with valve body. The valve body is equipped with cavity. Tetrafluoro ball is installed in the cavity. The utility model discloses through the cooperation of tetrafluoro ball and other components can avoid chlorination kettle backflow to chlorine inlet pipe, also can avoid chlorine overflow to air, through the liquid discharge hole can discharge the residual liquid in the valve body, avoids the maintenance dismantling check valve device residual liquid burn maintenance personnel, when needing to carry out the maintenance to the valve body inside, cancel the connection of two gland screws and valve body, thereby cancel the fixing of gland, after taking down gland, take out tetrafluoro ball, then carry out the maintenance, under the cooperation of two gland screws and gland, improved the convenience of maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of chlorine check valves, specifically to a chlorine feed check valve for a chlorination reactor. Background Technology

[0002] In the chemical production field, the chlorination reactor, as a core reaction device, plays a crucial role in introducing chlorine atoms into compound molecules. Its operational stability and safety directly affect the efficiency of the entire production process and the safety of personnel. A chlorination reactor typically consists of a reactor body, reactor cover, jacket, agitator, transmission device, shaft sealing device, and supports. Its internal structure can be configured with various agitator blades, such as anchor type, paddle type, turbine type, propeller type, or frame type, to meet the mixing requirements of materials with different viscosities, depending on specific process needs. In the chlorination reaction process, chlorine gas is a key raw material, and the safety of its feeding process is paramount. The chlorine gas feeding system typically includes components such as a chlorine gas regulating valve, flow meter, check valve, emergency shut-off valve, pressure transmitter, rupture disc, and safety valve, forming a multi-layered safety assurance system. (Summary of the instruction manual attached) Figure 3 The existing single-disc swing check valve uses the pressure difference generated by the flow of the medium to drive the valve disc to open and close, thereby preventing reverse flow. Although this design can achieve the basic function, it suffers from problems such as poor material compatibility, easy aging of seals, and delayed opening and closing response under chlorine conditions. With the continuous improvement of safety production requirements in the chemical industry, the technological development of chlorine feed check valves for chlorination reactors is receiving increasing attention.

[0003] Currently, during the chlorine feeding process in the chlorination reactor, backflow of the liquid or residual chlorine often causes the check valve to fail, or the liquid entering the chlorine pipeline to crystallize and affect the chlorine feeding, or residual chlorine and liquid can injure maintenance personnel, while also causing environmental pollution.

[0004] Therefore, this application proposes a chlorine gas feed check device for a chlorination reactor. Utility Model Content

[0005] The purpose of this utility model is to provide a chlorine gas feed check valve for a chlorination reactor, which solves the problems currently encountered during the chlorine gas feeding process in chlorination reactors. These problems include backflow of the feed liquid, residual chlorine, leading to check valve failure, crystallization of the feed liquid entering the chlorine pipeline affecting chlorine feeding, residual chlorine or feed liquid injuring maintenance personnel, and environmental pollution. The technical solution adopted by this utility model is as follows:

[0006] A chlorine gas feed check valve for a chlorination reactor includes: a pressure cap, two pressure cap screws, a pressure cap gasket, a valve body, and a PTFE ball. The pressure cap is movably connected to the valve body. The pressure cap gasket is installed between the pressure cap and the valve body. The two pressure cap screws pass through the pressure cap and the pressure cap gasket, respectively, and are screwed to the valve body. The valve body has a cavity. The PTFE ball is installed inside the cavity.

[0007] In this technical solution, the valve body is used to connect and fix the chlorination reactor and pipelines. When chlorine gas passes through the valve body, it causes the PTFE ball inside the cavity to move upwards, allowing the chlorine gas to flow through the gap between the PTFE ball and the valve body. When chlorine gas does not pass through the valve body, the PTFE ball moves downwards under gravity, preventing backflow. This avoids backflow from the chlorination reactor into the chlorine inlet pipe and also prevents chlorine gas from escaping into the air, improving the safety of the check valve. When internal maintenance of the valve body is required, and the PTFE ball needs to be removed, the two gland screws are turned to disconnect them from the valve body, thus releasing the gland's fixation. After removing the gland, the PTFE ball is taken out for maintenance. After maintenance, the PTFE ball is placed back into the cavity, the gland is installed, and then the two gland screws are threaded through the flap and screwed onto the valve body, finally fixing the flap. Using a gland in conjunction with two gland screws improves the convenience of internal maintenance of the valve body.

[0008] A further improvement of this utility model is that it also includes a sight glass cover. The sight glass cover is installed on the outside of the valve body.

[0009] A further improvement of this utility model is that it also includes a transparent F-sight lens. The transparent F-sight lens is installed between the sight lens cover and the valve body.

[0010] Using the above technical solution, the internal condition of the valve body can be observed through a transparent sight glass.

[0011] A further improvement of this utility model is that it also includes a gasket. The gasket is installed between the transparent F-view mirror and the view mirror cover.

[0012] In the above technical solution, the gasket is used to increase the tightness between the transparent F sight glass and the sight glass cover.

[0013] A further improvement of this utility model lies in the sight glass connecting bolt. The sight glass connecting bolt passes through the sight glass cover and is screwed to the valve body.

[0014] Using the above technical solution, the sight glass connecting bolts can fix the sight glass cover and the transparent F sight glass.

[0015] A further improvement of this utility model is that it also includes a drain hole plug. The valve body is also provided with a drain hole. The drain hole communicates with the cavity. One end of the drain hole plug is installed inside the drain hole.

[0016] Using the above technical solution, when it is necessary to drain the condensate from the cavity, the drain plug is pulled out, allowing the condensate to flow out from the drain hole. After drainage is complete, one end of the drain plug is reinserted into the drain hole. Draining the liquid from the valve body before disassembly prevents disassembly debris from burning maintenance personnel, thus improving the safety of the check valve.

[0017] A further improvement of this utility model is that the valve body is also provided with multiple fixing holes. These fixing holes are respectively located on both sides of the valve body.

[0018] Using the above technical solution, the valve body can be connected and fixed to the chlorination reactor and pipeline through the fixing holes on both sides of the valve body.

[0019] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0020] 1. This utility model provides a chlorine gas feed check device for a chlorination reactor. When chlorine gas passes through the valve body, it causes the PTFE ball in the cavity to move upwards, allowing the chlorine gas to flow through the gap between the PTFE ball and the valve body. When chlorine gas does not pass through the valve body, the PTFE ball moves downwards under the influence of gravity, preventing chlorine gas from flowing back. This prevents backflow of chlorine gas into the chlorine inlet pipe and also prevents chlorine gas from escaping into the air, improving the safety of the check device. The drain hole is used to drain the condensate in the cavity. When it is necessary to drain the condensate in the cavity, the drain hole plug is pulled out, allowing the condensate to flow out from the drain hole. After draining, one end of the drain hole plug is reinserted into the drain hole. During disassembly, draining the liquid in the valve body in advance can prevent disassembly debris from burning maintenance personnel, further improving the safety of the check device.

[0021] 2. This utility model provides a chlorine gas feed check device for a chlorination reactor. When internal maintenance of the valve body is required and the PTFE ball needs to be removed, the two gland screws are turned to disconnect them from the valve body, thus releasing the gland's fixation. After removing the gland, the PTFE ball is taken out for maintenance. After maintenance, the PTFE ball is placed back into the cavity, the gland is reinstalled, and then the two gland screws are screwed through the flap and onto the valve body, ultimately securing the flap. Using a gland in conjunction with two gland screws improves the convenience of internal maintenance of the valve body. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the chlorine gas passing through the state cross-section structure of this utility model;

[0025] Figure 3 A schematic cross-sectional view of a current single-disc swing check valve.

[0026] In the diagram: 1. Gland cap; 2. Gland cap screw; 3. Gland cap gasket; 4. Valve body; 5. PTFE ball; 6. Sight glass connecting bolt; 7. Gasket; 8. Transparent sight glass; 9. Sight glass gland; 10. Drain hole plug; 11. Cavity; 12. Drain hole; 13. Fixing hole. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to embodiments:

[0028] Example 1

[0029] like Figures 1-2 As shown, this utility model provides a chlorine gas feed check device for a chlorination reactor, including a pressure cap 1, a pressure cap screw 2, a pressure cap gasket 3, a valve body 4, and a PTFE ball 5. It may also include a solid-view connecting bolt, a gasket 7, a transparent sight glass 8, a sight glass pressure cap 9, and a drain hole plug 10.

[0030] The gland 1 is movably connected to the valve body 4. A gland gasket 3 is installed between the gland 1 and the valve body 4. Two gland screws 2 pass through the gland 1 and gland gasket 3 respectively and are screwed to the valve body 4. The valve body 4 has a cavity 11. A PTFE ball 5 is installed inside the cavity 11. The valve body 4 also has multiple fixing holes 13. These fixing holes 13 are located on both sides of the valve body 4. The valve body 4 can be connected and fixed to the chlorination reactor and pipelines through the fixing holes 13 on both sides. When chlorine gas passes through the valve body 4, it causes the PTFE ball 5 inside the cavity 11 to move upwards, allowing chlorine gas to flow through the gap between the PTFE ball 5 and the valve body 4. When chlorine gas does not pass through the valve body 4, the PTFE ball 5 moves downwards under gravity, preventing chlorine gas from flowing back. This prevents backflow from the chlorination reactor into the chlorine inlet pipe and also prevents chlorine gas from escaping into the air, improving the safety of the check valve. When internal maintenance of the valve body 4 is required and the PTFE ball 5 needs to be removed, rotate the two gland screws 2 to disconnect them from the valve body 4, thus releasing the gland 1 from its fixation. After removing the gland 1, remove the PTFE ball 5 for maintenance. After maintenance, place the PTFE ball 5 back into the cavity 11, install the gland 1, and then screw the two gland screws 2 through the flap and onto the valve body 4, finally securing the flap. Using the gland 1 in conjunction with the two gland screws 2 improves the convenience of internal maintenance of the valve body 4. Figure 2 The continuous arrows inside the hollow cavity 11 indicate the approximate flow path of chlorine gas.

[0031] Valve body 4 can be made of stainless steel, a material with excellent corrosion resistance. In many environments, ordinary steel easily reacts chemically with air, water, acids, alkalis, and other substances, leading to rust and corrosion, thus affecting its performance and service life. Stainless steel, however, contains a certain proportion of chromium, forming a dense chromium oxide protective film on its surface, effectively preventing further corrosion from external corrosive media. Using stainless steel significantly reduces maintenance and replacement costs. Stainless steel also possesses high strength and good toughness, capable of withstanding significant external forces without deformation or breakage. It can withstand a certain amount of impact. Components made of stainless steel can withstand complex workloads, ensuring the normal operation of equipment. The smooth, bright surface of stainless steel adds a modern and technological feel, enhancing the aesthetics of various products. Stainless steel has good processing properties and can be shaped and processed using various techniques. It is also a recyclable material with a high recycling rate. At the end of its service life, stainless steel can be recycled and reprocessed to create new products, reducing the consumption of natural resources and waste emissions. The use of stainless steel aligns more closely with environmental protection and sustainable development principles.

[0032] A sight glass cap 9 is installed on the outside of the valve body 4. A transparent sight glass 8 is installed between the sight glass cap 9 and the valve body 4. A gasket 7 is installed between the transparent sight glass 8 and the sight glass cap 9. A sight glass connecting bolt 6 passes through the sight glass cap 9 and is screwed to the valve body 4. The valve body 4 is also provided with a drain hole 12. The drain hole 12 communicates with the cavity 11. One end of the drain hole plug 10 is installed inside the drain hole 12. The transparent sight glass 8 can be used to observe the inside of the valve body 4. The transparent sight glass 8 is fixed by the sight glass connecting bolt 6. The gasket 7 is installed between the transparent sight glass 8 and the sight glass cap 9 to enhance the tightness between the transparent sight glass 8 and the sight glass cap 9. The drain hole 12 is used to drain the condensate in the cavity 11. When it is necessary to drain the condensate in the cavity 11, the drain hole plug 10 is pulled out, allowing the condensate to flow out from the drain hole 12. After the drainage is completed, one end of the drain hole plug 10 is reinserted into the drain hole 12. During disassembly, draining the liquid inside valve body 4 beforehand can prevent disassembly debris from burning maintenance personnel and improve the safety of the check valve.

[0033] The transparent sight glass 8 can be made of F46 material, which is resistant to corrosion from strong acids, strong alkalis, organic solvents, and oxidants, including concentrated sulfuric acid, hydrofluoric acid, and aqua regia, making it suitable for observation in highly corrosive environments. F46 material has a long-term operating temperature range of -200°C to +260°C and can withstand short-term high temperatures of 300°C. Sight glasses made of F46 material will not fail due to heat deformation or aging. When subjected to repeated temperature changes, F46 material is not prone to cracking or deformation. Sight glasses made of F46 material have high light transmittance, ensuring operators can accurately assess the internal media conditions of equipment. Sight glasses made of F46 material will not have image quality affected by material issues. The surface of the sight glass made of F46 material is smooth, does not easily adhere to media, and is easy to clean. F46 material has a low coefficient of friction and high mechanical strength, making it resistant to wear under the impact of high-speed fluids or particulate media. When combined with metals or other materials, it can form a long-term stable sealing structure to prevent media leakage. It is suitable for the observation needs of high-pressure vessels. Due to the stability of F46 material, sight glasses made of transparent F46 have a much longer service life than ordinary glass or plastic sight glasses. They can be used for extended periods in harsh environments, reducing equipment downtime and maintenance costs. They are not easily affected by ultraviolet radiation or ozone. F46 material is also non-toxic and non-polluting, and it does not release toxic gases under fire conditions, meeting the environmental protection requirements of modern industry.

[0034] The working principle of this chlorination reactor chlorine gas feed check device will be explained in detail below.

[0035] like Figures 1-2As shown, when the valve body 4 is vented, the PTFE ball 5 inside the cavity 11 moves upward, allowing chlorine gas to flow through the gap between the PTFE ball 5 and the valve body 4. When chlorine gas does not flow through the valve body 4, the PTFE ball 5 moves downward under gravity, preventing chlorine gas from flowing back. This prevents backflow from the chlorination reactor into the chlorine inlet pipe and also prevents chlorine gas from escaping into the air, improving the safety of the check valve. When maintenance is required inside the valve body 4 and the PTFE ball 5 needs to be removed, the two gland screws 2 are turned to disconnect them from the valve body 4, thus removing the gland 1. After removing the gland 1, the PTFE ball 5 is removed for maintenance. After maintenance, the PTFE ball 5 is placed back into the cavity 11, the gland 1 is installed, and the two gland screws 2 are screwed through the flap and onto the valve body 4, finally securing the flap. Using the gland 1 in conjunction with the two gland screws 2 improves the convenience of maintenance inside the valve body 4. The internal condition of the valve body 4 can be observed through the transparent sight glass 8. The drain hole 12 is used to drain the condensate in the cavity 11. When it is necessary to drain the condensate in the cavity 11, pull out the drain hole plug 10 to allow the condensate to flow out from the drain hole 12. After draining, insert one end of the drain hole plug 10 back into the drain hole 12. Draining the liquid in the valve body 4 in advance during disassembly can prevent disassembly debris from burning maintenance personnel and improve the safety of the check device. In summary, this chlorination reactor chlorine gas feed check device is characterized by high safety and flexibility.

[0036] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A chlorination reactor chlorine gas feed check device, characterized in that, include: A pressure cap (1), two pressure cap screws (2), a pressure cap gasket (3), a valve body (4), and a PTFE ball (5); the pressure cap (1) is movably connected to the valve body (4); the pressure cap gasket (3) is installed between the pressure cap (1) and the valve body (4); the two pressure cap screws (2) pass through the pressure cap (1) and the pressure cap gasket (3) respectively and are screwed to the valve body (4); the valve body (4) is provided with a cavity (11); the PTFE ball (5) is installed in the cavity (11).

2. The chlorine gas feed check device for a chlorination reactor according to claim 1, characterized in that... It also includes a sight glass cover (9); the sight glass cover (9) is installed on the outside of the valve body (4).

3. The chlorine gas feed check device for a chlorination reactor according to claim 2, characterized in that, It also includes a transparent sight glass (8); the transparent sight glass (8) is installed between the sight glass cover (9) and the valve body (4).

4. The chlorine gas feed check device for a chlorination reactor according to claim 3, characterized in that, It also includes a gasket (7); the gasket (7) is installed between the transparent sight glass (8) and the sight glass cover (9).

5. The chlorine gas feed check device for a chlorination reactor according to claim 2, characterized in that, Sight glass connecting bolt (6); the sight glass connecting bolt (6) passes through the sight glass cover (9) and is screwed to the valve body (4).

6. The chlorine gas feed check device for a chlorination reactor according to claim 1, characterized in that, It also includes a drain hole plug (10); the valve body (4) is also provided with a drain hole (12); the drain hole (12) is connected to the cavity (11); one end of the drain hole plug (10) is installed in the drain hole (12).

7. The chlorine gas feed check device for a chlorination reactor according to claim 6, characterized in that, The valve body (4) is also provided with a plurality of fixing holes (13); the plurality of fixing holes (13) are respectively provided on both sides of the valve body (4).

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