A device for replacing a valve of a liquid chlorine cylinder under pressure and a method for replacing the valve of the liquid chlorine cylinder under pressure

Abstract

The present invention discloses a device for replacing a valve of a liquid chlorine cylinder under pressure and a replacement method thereof, belonging to the field of liquid chlorine cylinder treatment. A device for replacing a valve of a liquid chlorine cylinder under pressure according to the present invention includes: an outer closed cover, with an integrally formed slot provided in the middle of the outside of the outer closed cover; both ends of a pneumatic valve are provided with valve ports; a sealing suction cup is provided in the middle of the inside of a bottle mouth connecting plate, and movable clamping plates for fixing the valve are installed on both sides inside the sealing suction cup; two spliced valve limit blocks for the valve are provided inside a disassembly and assembly fixture. The present invention solves the problem that the existing replacement device requires a highly airtight structure to maintain the sealing effect, which affects the work efficiency. The pushing block outside the outer closed cover can drive the connecting arm to rotate the disassembly and assembly fixture, and the two valve limit blocks inside the disassembly and assembly fixture can clamp the valve to rotate the valve, and screw the valve out of the liquid chlorine cylinder. The structure is simple and the use is convenient, which is beneficial to improving the work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of liquid chlorine steel cylinder processing, and in particular to a device for replacing a liquid chlorine steel cylinder valve under pressure and a replacement method thereof. Background Art

[0002] Liquid chlorine is a colorless liquid with a strong pungent odor. Ammonia is an important chemical raw material. For the convenience of transportation and storage, gaseous ammonia is usually pressurized or cooled to obtain liquid ammonia. Ammonia is easily soluble in water, and after dissolving in water, it forms an alkaline solution of ammonium hydroxide. Liquid chlorine is mostly stored in pressure-resistant steel cylinders or steel tanks, and cannot coexist with substances such as acetaldehyde, acrolein, and boron. When the valve of the liquid chlorine cylinder is damaged during long-term operation, it needs to be replaced under pressure to prevent leakage.

[0003] In the prior art, there is a device for replacing the valve of a gas cylinder under pressure disclosed in the announcement number CN201475642U, which includes a hollow shell, the front end of which is a sealing end face, a sealing gasket and a positioning ring are arranged in front of the sealing end face, and a rotatable hollow rotating rod is sleeved in the shell; there is a lateral opening on the circumferential side wall of the front end of the rotating rod, and a positioning rod is arranged in the rear end; a valve bucket and a pressure relief valve are arranged on the shell, and a fastening mechanism is arranged outside the shell. It has the function of removing a bad bottle valve and replacing it with a new one in a closed state, and because the bottle valve replacement device has high concentricity and accurate positioning, the operation process is more reliable, the work efficiency is improved, and the working time of the operator is shortened.

[0004] However, in the above technology, the existing replacement device has a complex structure and requires a highly sealed structure to maintain the sealing effect, which is inconvenient to operate and affects work efficiency.

[0005] In view of these defects, it is necessary to design a pressure replacement device and a replacement method for the valve of a liquid chlorine cylinder. Summary of the invention

[0006] The object of the present invention is to provide a device for replacing the valve of a liquid chlorine cylinder under pressure and a method for replacing the valve, which can solve the problems that the existing replacement device has a complex structure, requires a highly sealed structure to maintain the sealing effect, is inconvenient to operate, and affects work efficiency.

[0007] To achieve the above object, the present invention provides the following technical solution: a device for replacing a valve of a liquid chlorine cylinder under pressure, comprising:

[0008] An outer sealing cover, the outer sealing cover is used to seal the working space for replacing the bottle valve, and an integrally formed groove is provided in the middle of the outer portion of the outer sealing cover, and the groove is used to rotate the bottle valve;

[0009] Also included are:

[0010] Lower connecting seat. The lower connecting seat for adjusting the position of the bottle valve is located at the lower end of the outer enclosure. An integrally formed first through port is provided in the middle of the interior of the lower connecting seat, and the first through port is used for installing the bottle valve.

[0011] Air pressure valve. The air pressure valve for adjusting the air pressure inside the outer enclosure is located at the upper end of the outer enclosure. Valve ports are provided at both ends of the air pressure valve, and the valve ports are used for connecting an electric air pump.

[0012] Bottle mouth connecting plate. The bottle mouth connecting plate for adsorbing on the upper end of the liquid chlorine cylinder is located at the lower end of the lower connecting seat. A telescopic rod is installed between the bottle mouth connecting plate and the lower connecting seat. The telescopic rod extends into the interior of the lower connecting seat and is slidably connected to the lower connecting seat. A sealing suction cup is provided in the middle of the interior of the bottle mouth connecting plate. Moving clips for fixing the bottle valve are installed on both sides inside the sealing suction cup. Sealing thread grooves are integrally formed on one side of the interior of the two moving clips.

[0013] Disassembly and assembly fixture. The disassembly and assembly fixture for disassembling and assembling the bottle valve is located between the outer enclosure and the lower connecting seat. Two spliced bottle valve limiting blocks are provided inside the disassembly and assembly fixture, and the disassembly and assembly fixture is rotatably connected to the lower connecting seat and the outer enclosure through bearing sleeves.

[0014] Preferably, a connecting plate is integrally formed at the upper end of the outer enclosure. A sealing flange is integrally formed at the lower end of the air pressure valve. The air pressure valve is fixedly connected to the connecting plate through the sealing flange.

[0015] Preferably, a limiting disk is integrally formed on the outer surface of the lower connecting seat, and a sealing ring is provided on the lower end surface of the lower connecting seat. The sealing ring is used for sealing the upper end surface of the bottle mouth connecting plate.

[0016] Preferably, a pressure gauge dial for detecting the air pressure inside the outer enclosure is provided at the upper end of the air pressure valve, and disks are installed on both sides at the upper end of the air pressure valve. The disks are used for adjusting the position of the valve core inside the valve port.

[0017] Preferably, electric motors are installed on both sides of the bottle mouth connecting plate. A threaded rod is installed at one end of the electric motor. The threaded rod is rotatably connected to the bottle mouth connecting plate through a bearing, and one end of the threaded rod extends into the interior of the moving clip and is threadedly connected to the moving clip.

[0018] Preferably, the moving clip is slidably connected to the sealing suction cup through a chute, and two limiting sliding rods are installed inside the sealing suction cup. The limiting sliding rods penetrate through the moving clip and are slidably connected to the moving clip. A second through port is integrally formed in the middle of the interior of the sealing suction cup. The moving clip is also used for closing the second through port.

[0019] Preferably, a push block is installed on one external side of the disassembly and assembly fixture. The push block is slidably connected to the outer closed cover and the lower connecting seat respectively through slots, and a connecting arm is installed between the push block and the disassembly and assembly fixture.

[0020] A replacement method for a valve replacement device with pressure for a liquid chlorine cylinder valve includes the following steps:

[0021] Step 1: Place the lower connecting seat outside the liquid chlorine cylinder where the valve needs to be replaced. Insert the valve into the inside of the lower connecting seat through the second through port and the first through port. Snap the two spliced valve limiting blocks under the outer closed cover to fix the disassembly and assembly fixture to the valve.

[0022] Step 2: After fixing the air pressure valve to the outside of the outer closed cover through the sealing flange, pull the bottle mouth connecting plate, adjust the air pressure valve through the air pressure pump. After the air pressure inside the outer closed cover is stabilized, make the sealing suction cup adsorb on the outside of the liquid chlorine cylinder.

[0023] Step 3: Toggle the push block. The push block drives the connecting arm to rotate the disassembly and assembly fixture. The two valve limiting blocks inside the disassembly and assembly fixture clamp the valve to rotate the valve, and screw out the valve from the liquid chlorine cylinder.

[0024] Step 4: After screwing out the valve, turn on the electric motor. The electric motor drives the threaded rod to rotate. The threaded rod drives the movable clamping plate to move, so that the two movable clamping plates fit together to seal the second through port.

[0025] Step 5: Quickly disassemble the sealing flange, take out the old valve. Insert the new valve into the inside of the disassembly and assembly fixture through the valve limiting block, then install the air pressure valve, and adjust the air pressure inside the outer closed cover again through the air pressure valve.

[0026] Step 6: Toggle the push block. The push block drives the connecting arm to rotate the disassembly and assembly fixture. Screw the replaced valve into the inside of the movable clamping plate through the sealing thread groove. After the position is stable, move the movable clamping plate out of the second through port through the electric motor, and rotate the disassembly and assembly fixture again to screw the valve into the inside of the liquid chlorine cylinder to complete the replacement.

[0027] Step 7: Adjust the air pressure of the air pressure valve to make the sealing suction cup disengage from the outside of the liquid chlorine cylinder, disassemble the air pressure valve, take out the two valve limiting blocks respectively, and disassemble the lower connecting seat.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. The pressure - maintained replacement device and its replacement method for the valve of liquid chlorine cylinders. During the replacement process, by placing the lower connecting seat outside the liquid chlorine cylinder whose valve needs to be replaced, the valve is sleeved into the inside of the lower connecting seat through the second port and the first port. Two spliced valve - limiting blocks are clamped under the outer enclosure, so that the disassembly and assembly fixture is fixed to the valve. The original old valve can be quickly fixed. According to the different structures of the valves, the valve - limiting blocks are adjusted to facilitate the fixing work. The structure is simple and convenient to operate. And the connecting arm can be driven by the pushing block outside the outer enclosure to make the disassembly and assembly fixture rotate. The two valve - limiting blocks inside the disassembly and assembly fixture clamp the valve to make the valve rotate, and the valve is screwed out of the liquid chlorine cylinder. The structure is simple and easy to use, which is conducive to improving work efficiency.

[0030] 2. The pressure - maintained replacement device and its replacement method for the valve of liquid chlorine cylinders. During operation, after the air pressure valve is fixed to the outside of the outer enclosure through the sealing flange, the bottle - mouth connecting plate is pulled. By adjusting the air pressure valve through the air pressure pump, after the air pressure inside the outer enclosure is stabilized, the sealing suction cup adsorbs on the outside of the liquid chlorine cylinder. During the disassembly of the old valve, the sealing work can be quickly carried out. And the position of the bottle - mouth connecting plate can be adjusted through the limit slide rod, which is convenient for disassembly and assembly work. And the electric motor drives the threaded rod to rotate, and the threaded rod drives the movable clamping plate to move, so that the two movable clamping plates fit together to seal the second port, quickly carrying out the sealing work. And the sealing thread grooves at the upper ends of the two movable clamping plates can help position the new valve, so as to quickly install the valve, further improving the replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Isometric view of the front view of the present invention;

[0032] Figure 2 Isometric view of the bottom view of the present invention;

[0033] Figure 3 Isometric view of the top view of the outer enclosure of the present invention;

[0034] Figure 4 Isometric view of the top view of the disassembly and assembly fixture of the present invention;

[0035] Figure 5 Isometric view of the disassembly and assembly fixture of the present invention after the movable clamping plate is closed;

[0036] Figure 6 Internal structure diagram of the bottom view of the disassembly and assembly fixture of the present invention.

[0037] In the figure: 1. Outer enclosure; 101. Groove; 102. Connection plate; 2. Lower connection seat; 201. Limit disk; 202. Sealing ring; 203. First through port; 3. Pneumatic valve; 301. Pneumatic pressure dial; 302. Wheel disk; 303. Valve port; 304. Sealing flange; 4. Bottle mouth connection plate; 401. Electric motor; 402. Telescopic rod; 403. Sealing suction cup; 404. Second through port; 405. Movable clamping plate; 406. Limit slide bar; 407. Threaded rod; 408. Sealing thread groove; 5. Disassembly and installation fixture; 501. Pushing block; 502. Bottle valve limit clamping block; 503. Bearing sleeve; 504. Connecting arm. Detailed implementation manners

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In order to solve the technical problems in the prior art that the replacement device for the bottle valve of a liquid chlorine steel cylinder has a complex structure, requires a highly airtight structure to maintain the sealing effect, is inconvenient to operate, and affects the work efficiency, please refer to Figure 1 - Figure 2 、 Figure 4 - Figure 5 The following technical solutions are provided:

[0040] A pressure - maintained replacement device for the bottle valve of a liquid chlorine steel cylinder, comprising:

[0041] An outer enclosure 1, the outer enclosure 1 is used to seal the working space for replacing the bottle valve. An integrally formed groove 101 is provided in the middle of the outside of the outer enclosure 1, and the groove 101 is used for rotating the bottle valve;

[0042] It further includes:

[0043] A lower connection seat 2, the lower connection seat 2 for adjusting the position of the bottle valve is located at the lower end of the outer enclosure 1. An integrally formed first through port 203 is provided in the middle of the inside of the lower connection seat 2, and the first through port 203 is used for installing the bottle valve;

[0044] A pneumatic valve 3, the pneumatic valve 3 for adjusting the air pressure inside the outer enclosure 1 is located at the upper end of the outer enclosure 1. Valve ports 303 are provided at both ends of the pneumatic valve 3, and the valve ports 303 are used for connecting an electric air pump;

[0045] The bottle mouth connecting plate 4, which is used to adsorb on the upper end of the liquid chlorine cylinder, is located at the lower end of the lower connecting seat 2. An expansion rod 402 is installed between the bottle mouth connecting plate 4 and the lower connecting seat 2. The expansion rod 402 extends into the lower connecting seat 2 and is slidably connected to the lower connecting seat 2. In the middle of the inside of the bottle mouth connecting plate 4, a sealing suction cup 403 is provided. On both sides inside the sealing suction cup 403, movable clamping plates 405 for fixing the bottle valve are installed. On one side inside both of the two movable clamping plates 405, integrally formed sealing thread grooves 408 are provided.

[0046] The disassembly and assembly fixture 5, which is used for disassembling and assembling the bottle valve, is located between the outer enclosure 1 and the lower connecting seat 2. Inside the disassembly and assembly fixture 5, two spliced bottle valve limit blocks 502 are provided, and the disassembly and assembly fixture 5 is rotatably connected to the lower connecting seat 2 and the outer enclosure 1 through a bearing sleeve 503.

[0047] Specifically, during the replacement process, by placing the lower connecting seat 2 outside the liquid chlorine cylinder whose bottle valve needs to be replaced, the bottle valve is sleeved into the lower connecting seat 2 through the second through port 404 and the first through port 203. The two spliced bottle valve limit blocks 502 are snapped under the outer enclosure 1 to fix the disassembly and assembly fixture 5 to the bottle valve, so that the original old bottle valve can be quickly fixed. According to the different structures of the bottle valve, the bottle valve limit blocks 502 are adjusted for fixing work. The structure is simple and convenient to operate. And the disassembly and assembly fixture 5 can be rotated by driving the connecting arm 504 through the pushing block 501 outside the outer enclosure 1. The two bottle valve limit blocks 502 inside the disassembly and assembly fixture 5 clamp the bottle valve to rotate the bottle valve, and the bottle valve is screwed out of the liquid chlorine cylinder. The structure is simple and easy to use, which is beneficial to improving work efficiency.

[0048] To solve the technical problem in the prior art that the air pressure adjustment method of the bottle valve pressure replacement device is complex and affects the work, please refer to Figure 1 - Figure 2 and the following technical solutions are provided:

[0049] On the upper end of the air pressure valve 3, an air pressure dial 301 for detecting the air pressure inside the outer enclosure 1 is provided, and on both sides of the upper end of the air pressure valve 3, wheel disks 302 are installed. The wheel disks 302 are used to adjust the position of the valve core inside the valve port 303.

[0050] On the outer surface of the lower connecting seat 2, an integrally formed limit disk 201 is provided, and on the lower end surface of the lower connecting seat 2, a sealing ring 202 is provided. The sealing ring 202 is used to seal the upper end surface of the bottle mouth connecting plate 4.

[0051] Specifically, after fixing the air pressure valve 3 to the outside of the outer enclosure 1 through the sealing flange 304, pull the bottle mouth connecting plate 4, adjust the air pressure valve 3 through the air pressure pump. After the air pressure inside the outer enclosure 1 is stabilized, make the sealing suction cup 403 adsorb on the outside of the liquid chlorine cylinder. During the disassembly of the old bottle valve, the closing work can be carried out quickly, and the work can be displayed through the air pressure dial 301, which is convenient for adjusting the work in cooperation with the air pressure pump.

[0052] To solve the technical problems in the prior art that the sealing effect of the bottle valve pressure replacement device is average, it is not convenient to operate, and it affects the work quality, please refer to Figure 3 - Figure 6 and the following technical solutions are provided:

[0053] A connection plate 102 is integrally formed at the upper end of the outer enclosure 1, and a sealing flange 304 is integrally formed at the lower end of the air pressure valve 3. The air pressure valve 3 is fixedly connected to the connection plate 102 through the sealing flange 304.

[0054] Electric motors 401 are installed on both sides of the bottle mouth connecting plate 4. One end of the electric motor 401 is provided with a threaded rod 407. The threaded rod 407 is rotatably connected to the bottle mouth connecting plate 4 through a bearing, and one end of the threaded rod 407 extends into the movable clamping plate 405 and is threadedly connected to the movable clamping plate 405.

[0055] The movable clamping plate 405 is slidably connected to the sealing suction cup 403 through a chute. Two limiting slide rods 406 are installed inside the sealing suction cup 403. The limiting slide rods 406 penetrate through the movable clamping plate 405 and are slidably connected to the movable clamping plate 405. A second through port 404 is integrally formed in the middle of the sealing suction cup 403, and the movable clamping plate 405 is also used to close the second through port 404.

[0056] Specifically, by pulling the bottle mouth connecting plate 4 and adjusting the air pressure at the same time, the sealing suction cup 403 can be adsorbed on the outside of the liquid chlorine cylinder. During the disassembly of the old bottle valve, the closing work can be carried out quickly. And through the limiting slide rods 406, the position of the bottle mouth connecting plate 4 can be adjusted, which is convenient for disassembly and assembly work. And by driving the threaded rod 407 to rotate through the electric motor 401, the threaded rod 407 drives the movable clamping plate 405 to move, so that the two movable clamping plates 405 are mutually attached, the second through port 404 is sealed, and the closing work is carried out quickly. And the sealing thread grooves 408 at the upper ends of the two movable clamping plates 405 can help position the new bottle valve for quick installation work, further improving the replacement efficiency.

[0057] To solve the technical problems in the prior art that in the work of disassembling and installing the bottle valve, the airtight space cannot be maintained, which affects the internal safety effect of the liquid chlorine cylinder, please refer to Figure 1 、 Figure 5 and the following technical solutions are provided:

[0058] A push block 501 is installed on one side of the outside of the disassembly and assembly fixture 5 . The push block 501 is slidably connected to the outer sealing cover 1 and the lower connecting seat 2 through the slot 101 . A connecting arm 504 is installed between the push block 501 and the disassembly and assembly fixture 5 .

[0059] Specifically, the push block 501 can be toggled, and the push block 501 drives the connecting arm 504 to rotate the disassembly and assembly fixture 5, and the two bottle valve limit blocks 502 inside the disassembly and assembly fixture 5 clamp the bottle valve to rotate the bottle valve, so that the bottle valve can be screwed out of the liquid chlorine cylinder and can be rotated in the closed environment of the outer sealing cover 1, which is convenient to operate and has a stable structure.

[0060] See also Figure 1 - Figure 6 A method for replacing a pressure replacement device for a liquid chlorine cylinder valve comprises the following steps:

[0061] Step 1: Place the lower connecting seat 2 outside the liquid chlorine cylinder whose valve needs to be replaced, insert the valve into the lower connecting seat 2 through the second opening 404 and the first opening 203, and insert the two spliced ​​valve limit blocks 502 under the outer sealing cover 1 to fix the disassembly and assembly fixture 5 to the valve;

[0062] Step 2: After the air pressure valve 3 is fixed to the outside of the outer closed cover 1 through the sealing flange 304, the bottle mouth connecting plate 4 is pulled, and the air pressure valve 3 is adjusted by the air pressure pump to stabilize the air pressure inside the outer closed cover 1, and then the sealing suction cup 403 is adsorbed on the outside of the liquid chlorine cylinder;

[0063] Step 3: Move the push block 501, which drives the connecting arm 504 to rotate the disassembly fixture 5, and the two bottle valve limit blocks 502 inside the disassembly fixture 5 clamp the bottle valve to rotate the bottle valve, and rotate the bottle valve out of the liquid chlorine cylinder;

[0064] Step 4: After the bottle valve is screwed out, the electric motor 401 is turned on, the electric motor 401 drives the threaded rod 407 to rotate, and the threaded rod 407 drives the movable clamping plate 405 to move, so that the two movable clamping plates 405 are attached to each other, and the second opening 404 is sealed;

[0065] Step 5: quickly disassemble the sealing flange 304, take out the old bottle valve, insert the new bottle valve into the disassembly and assembly fixture 5 through the bottle valve limit block 502, and then install the air pressure valve 3, and adjust the air pressure inside the outer sealing cover 1 again through the air pressure valve 3;

[0066] Step 6: Move the push block 501, which drives the connecting arm 504 to rotate the disassembly and assembly fixture 5, and screw the replaced bottle valve into the movable clamping plate 405 through the sealing thread groove 408. After the position is stable, the movable clamping plate 405 is moved out of the second opening 404 by the electric motor 401, and the disassembly and assembly fixture 5 is rotated again to screw the bottle valve into the liquid chlorine cylinder, and the replacement is completed;

[0067] Step 7: Adjust the air pressure of the air pressure valve 3 to separate the sealing suction cup 403 from the outside of the liquid chlorine cylinder, disassemble the air pressure valve 3, take out the two bottle valve limit blocks 502 respectively, and disassemble the connecting seat 2.

[0068] Working principle: Place the lower connecting seat 2 on the outside of the liquid chlorine cylinder whose cylinder valve needs to be replaced, insert the cylinder valve into the lower connecting seat 2 through the second opening 404 and the first opening 203, insert the two spliced ​​cylinder valve limit blocks 502 under the outer closed cover 1, fix the disassembly and assembly fixture 5 to the cylinder valve, fix the air pressure valve 3 to the outside of the outer closed cover 1 through the sealing flange 304, pull the bottle mouth connecting plate 4, adjust the air pressure valve 3 through the air pressure pump, stabilize the air pressure inside the outer closed cover 1, and then adsorb the sealing suction cup 403 on the outside of the liquid chlorine cylinder to make the old one During the disassembly process, the bottle valve can be quickly sealed and displayed through the air pressure dial 301, which is convenient for adjusting with the air pressure pump. The push block 501 can be turned, and the push block 501 drives the connecting arm 504 to rotate the disassembly and assembly fixture 5. The two bottle valve limit blocks 502 inside the disassembly and assembly fixture 5 clamp the bottle valve to rotate the bottle valve, and the bottle valve can be rotated out of the liquid chlorine cylinder and can be rotated in the closed environment of the outer sealing cover 1. It is easy to operate and has a stable structure. After the bottle valve is rotated out, the electric motor 401 is turned on, and the electric motor 40 1 drives the threaded rod 407 to rotate, and the threaded rod 407 drives the movable clamping plate 405 to move, so that the two movable clamping plates 405 fit each other, the second opening 404 is sealed, the sealing flange 304 is quickly disassembled, the old bottle valve is taken out, and the new bottle valve is embedded in the disassembly and assembly fixture 5 through the bottle valve limit block 502, and the sealing thread grooves 408 on the upper ends of the two movable clamping plates 405 can help the new bottle valve to be positioned, so as to quickly install the work, further improve the replacement efficiency, and then install the air pressure valve 3, and adjust the air pressure inside the outer sealing cover 1 again through the air pressure valve 3. , move the push block 501, the push block 501 drives the connecting arm 504 to rotate the disassembly and assembly fixture 5, and screw the replaced bottle valve into the movable clamp 405 through the sealing thread groove 408. After the position is stable, the movable clamp 405 is moved out of the second opening 404 by the electric motor 401, and the disassembly and assembly fixture 5 is rotated again to screw the bottle valve into the liquid chlorine cylinder. The replacement is completed, the air pressure of the air pressure valve 3 is adjusted to separate the sealing suction cup 403 from the outside of the liquid chlorine cylinder, the air pressure valve 3 is disassembled, the two bottle valve limit blocks 502 are taken out respectively, and the lower connecting seat 2 is disassembled.

[0069] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0070] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for replacing the valve of a liquid chlorine cylinder under pressure, comprising: An outer enclosure (1), the outer enclosure (1) is used to seal the working space for replacing the valve, and an integrally formed slot (101) is provided in the middle of the outside of the outer enclosure (1), and the slot (101) is used to rotate the valve; It is characterized in that it further includes: A lower connecting seat (2), the lower connecting seat (2) for adjusting the position of the valve is located at the lower end of the outer enclosure (1), and an integrally formed first through port (203) is provided in the middle of the inside of the lower connecting seat (2), and the first through port (203) is used to install the valve; A pressure valve (3), the pressure valve (3) for adjusting the air pressure inside the outer enclosure (1) is located at the upper end of the outer enclosure (1), and valve ports (303) are provided at both ends of the pressure valve (3), and the valve ports (303) are used to connect an electric air pump; A bottle mouth connecting plate (4), the bottle mouth connecting plate (4) for adsorbing on the upper end of the liquid chlorine cylinder is located at the lower end of the lower connecting seat (2), a telescopic rod (402) is installed between the bottle mouth connecting plate (4) and the lower connecting seat (2), the telescopic rod (402) extends into the lower connecting seat (2) and is slidably connected to the lower connecting seat (2), and a sealing suction cup (403) is provided in the middle of the inside of the bottle mouth connecting plate (4), and movable clamping plates (405) for fixing the valve are installed on both sides of the inside of the sealing suction cup (403), and sealing threaded grooves (408) are integrally formed on one side of the inside of the two movable clamping plates (405); A disassembly and assembly fixture (5), the disassembly and assembly fixture (5) for disassembling and assembling the valve is located between the outer enclosure (1) and the lower connecting seat (2), two spliced valve limiting blocks (502) are provided inside the disassembly and assembly fixture (5), and the disassembly and assembly fixture (5) is rotatably connected to the lower connecting seat (2) and the outer enclosure (1) through a bearing sleeve (503).

2. A device for replacing the valve of a liquid chlorine cylinder under pressure according to claim 1, characterized in that: A connecting disc (102) is integrally formed at the upper end of the outer enclosure (1), a sealing flange (304) is integrally formed at the lower end of the pressure valve (3), and the pressure valve (3) is fixedly connected to the connecting disc (102) through the sealing flange (304).

3. A device for replacing the valve of a liquid chlorine cylinder under pressure according to claim 2, characterized in that: A limiting disc (201) is integrally formed on the outer surface of the lower connecting seat (2), and a sealing ring (202) is provided on the lower end surface of the lower connecting seat (2), and the sealing ring (202) is used to seal the upper end surface of the bottle mouth connecting plate (4).

4. A device for replacing the valve of a liquid chlorine cylinder under pressure according to claim 3, characterized in that: A pressure gauge dial (301) for detecting the air pressure inside the outer enclosure (1) is provided at the upper end of the pressure valve (3), and discs (302) are installed on both sides of the upper end of the pressure valve (3), and the discs (302) are used to adjust the position of the valve core inside the valve port (303).

5. A pressure - maintained replacement device for the valve of a liquid chlorine steel cylinder according to claim 4, characterized in that: Electric motors (401) are installed on both sides of the bottle - mouth connecting plate (4). One end of each electric motor (401) is provided with a threaded rod (407). The threaded rod (407) is rotationally connected to the bottle - mouth connecting plate (4) through a bearing, and one end of the threaded rod (407) extends into the movable clamping plate (405) and is in threaded connection with the movable clamping plate (405).

6. A pressure - maintained replacement device for the valve of a liquid chlorine steel cylinder according to claim 5, characterized in that: The movable clamping plate (405) is slidably connected to the sealing suction cup (403) through a chute. Two limiting slide rods (406) are installed inside the sealing suction cup (403). The limiting slide rods (406) penetrate through the movable clamping plate (405) and are slidably connected to the movable clamping plate (405). A second through - port (404) formed integrally is arranged in the middle inside the sealing suction cup (403), and the movable clamping plate (405) is also used to close the second through - port (404).

7. A pressure - maintained replacement device for the valve of a liquid chlorine steel cylinder according to claim 6, characterized in that: A push block (501) is installed on the outer side of one side of the disassembly and assembly fixture (5). The push block (501) is slidably connected to the outer sealing cover (1) and the lower connecting seat (2) respectively through a slot (101). A connecting arm (504) is installed between the push block (501) and the disassembly and assembly fixture (5).

8. A replacement method for the pressure - maintained replacement device for the valve of a liquid chlorine steel cylinder according to claim 7, characterized in that, it includes the following steps: Step 1: Place the lower connecting seat (2) outside the liquid chlorine steel cylinder whose valve needs to be replaced. Insert the valve into the lower connecting seat (2) through the second through - port (404) and the first through - port (203). Clamp two spliced valve limiting blocks (502) below the outer sealing cover (1) to fix the disassembly and assembly fixture (5) to the valve; Step 2: After fixing the air pressure valve (3) outside the outer sealing cover (1) through the sealing flange (304), pull the bottle - mouth connecting plate (4). Adjust the air pressure valve (3) through the air pressure pump. After the air pressure inside the outer sealing cover (1) is stable, make the sealing suction cup (403) adsorb on the outside of the liquid chlorine steel cylinder; Step 3: Dial the push block (501). The push block (501) drives the connecting arm (504) to rotate the disassembly and assembly fixture (5). The two valve limiting blocks (502) inside the disassembly and assembly fixture (5) clamp the valve to rotate the valve, and screw the valve out of the liquid chlorine steel cylinder; Step 4: After screwing out the valve, turn on the electric motor (401). The electric motor (401) drives the threaded rod (407) to rotate. The threaded rod (407) drives the movable clamping plate (405) to move, so that the two movable clamping plates (405) are mutually attached to close the second through - port (404); Step Five: Quickly disassemble the sealing flange (304), remove the old bottle valve, insert the new bottle valve into the internal part of the disassembly and installation fixture (5) through the bottle valve limit fixture block (502), then install the pneumatic valve (3), and adjust the internal air pressure of the outer enclosure (1) again through the pneumatic valve (3); Step Six: Toggle the push block (501), the push block (501) drives the connecting arm (504) to rotate the disassembly and installation fixture (5), screw the replaced bottle valve into the internal part of the movable clamping plate (405) through the sealing thread groove (408). After the position is stable, move the movable clamping plate (405) out of the second through port (404) through the electric motor (401), rotate the disassembly and installation fixture (5) again, and screw the bottle valve into the liquid chlorine cylinder to complete the replacement; Step Seven: Adjust the air pressure of the pneumatic valve (3) to make the sealing suction cup (403) disengage from the outside of the liquid chlorine cylinder, disassemble the pneumatic valve (3), take out the two bottle valve limit fixture blocks (502) respectively, and disassemble the connecting seat (2).

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