CN114485217A

CN114485217A - Microchannel heat exchange process and equipment

Info

Publication number: CN114485217A
Application number: CN202210137436.XA
Authority: CN
Inventors: 邵黎军; 刘咏胜; 陶红雷
Original assignee: Jiangsu Gongchang Precision Aluminum Industry Co ltd
Current assignee: Jiangsu Gongchang Precision Aluminum Industry Co ltd
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-05-13

Abstract

The invention relates to the technical field of microchannel heat exchange, and discloses a microchannel heat exchange process and microchannel heat exchange equipment. Through the arrangement of the heat dissipation device, the first valve is opened, the hot liquid flows into the heat dissipation device from the first pipeline by closing, the third valve is opened by matching with the first pipeline, the cold liquid flows into the third pipeline and flows into the heat dissipation device, the problems that the traditional mechanical equipment cannot dissipate heat for the liquid, safety accidents occur easily are solved, and the effects of mechanical heat dissipation and stable and safe production are achieved.

Description

Microchannel heat exchange process and equipment

Technical Field

The invention relates to the technical field of microchannel heat exchange, in particular to a microchannel heat exchange process and microchannel heat exchange equipment.

Background

The double-pipe heat exchanger is a heat exchanger which is most widely applied in petrochemical production at present. The device mainly comprises a shell (comprising an inner shell and an outer shell), a U-shaped elbow, a stuffing box and the like. The required pipes can be made of common carbon steel, cast iron, copper, titanium, ceramic glass and the like respectively. The tube is typically secured to a support. Two different media can flow in the tube in opposite directions (or in the same direction) to achieve the purpose of heat exchange. In the process of reverse heat exchange, hot fluid enters from the upper part, cold fluid enters from the lower part, and heat is transferred from one fluid to the other fluid through the wall of the inner pipe. The distance that the hot fluid flows from the inlet end to the outlet end is called a tube side, the fluid enters from the connecting tube of the shell and is led in from one end of the shell to the other end of the shell, and the heat exchanger transferring heat in this way is called a shell side double-tube heat exchanger; the double-pipe heat exchanger in the market is widely applied to petrochemical industry, refrigeration and other industrial departments; at present, researchers at home and abroad put forward a plurality of improved schemes for the double-pipe heat exchanger so as to prolong the service life of the double-pipe heat exchanger, and the double-pipe heat exchanger is troublesome to overhaul, clean and disassemble at present, so that a micro-channel heat exchange process and micro-channel heat exchange equipment are needed.

Disclosure of Invention

The invention aims to provide a microchannel heat exchange process and microchannel heat exchange equipment, which achieve the aim of maintaining machinery.

In order to achieve the purpose, the invention provides the following technical scheme: a microchannel heat exchange device comprises a first working table plate, wherein box body supporting legs are fixedly connected to the top of the first working table plate, a box body is fixedly connected to the top of the box body supporting legs, a first pipeline penetrates through one side of the box body, a first valve is fixedly connected to the right portion of the first pipeline, a fourth pipeline is communicated with the bottom of the first pipeline, a second valve is fixedly connected to the bottom of the fourth pipeline, a first disassembling and assembling disc device is fixedly connected to the left portion of the first pipeline, the first disassembling and assembling disc device comprises a first A disc block, a first rubber pad, a first B disc block, a first screw rod and a first nut, the right portion of the first A disc block is fixedly connected with the outer wall of the first pipeline, the right portion of the first rubber pad is in movable contact with the left portion of the first A disc block, the right portion of the first B disc block is in movable contact with the left portion of the first rubber pad, the right part of first pipeline and the left part fixed connection of first B dish piece, the left part fixedly connected with heat abstractor of first pipeline, heat abstractor includes the second pipeline, the inner wall cover of second pipeline is equipped with first pipeline.

Preferably, heat abstractor's left part fixedly connected with fin heat abstractor, fin heat abstractor include L type pipeline, fin groove, the right part of L type pipeline and heat abstractor's left part fixed connection, the fin groove evenly sets up the inside at L type pipeline, fin groove intercommunication sets up the inside at L type pipeline.

Preferably, the bottom of the heat dissipation device is fixedly connected with a third channel pipe, the third channel pipe is communicated with and arranged inside the second channel pipe, the outer wall of the third channel pipe is fixedly connected with a second dismounting and mounting plate device, the second dismounting and mounting plate device comprises a second A plate block, a second rubber pad, a second B plate block, a second screw and a second nut, the top of the second A plate block is fixedly connected with the outer wall of the third channel pipe, the top of the second rubber pad is movably contacted with the outer wall of the second A plate block, the top of the first B plate block is movably contacted with the bottom of the second rubber pad, the outer wall of the third channel pipe is fixedly connected with the bottom of the second B plate block, and the outer wall of the third channel pipe is fixedly connected with a third valve.

Preferably, the left part of heat abstractor fixedly connected with fourth passageway pipe, the left part activity of fourth passageway pipe is run through there is the box, fourth passageway pipe extends to the box outside and fourth valve fixed connection, heat abstractor's outer wall fixedly connected with fifth passageway pipe, the top activity of fifth passageway pipe is run through there is the box inner wall to extend to the outside of box, the left part activity hinge of box has the box door.

Preferably, the number of the group A devices in the box body is two, the number of the group B devices in the box body is three, the group A devices comprise a first dismounting and mounting disc device, a second dismounting and mounting disc device, a heat dissipation device and a fin heat dissipation device, and the group B devices comprise two fin heat dissipation devices, a second dismounting and mounting disc device and a heat dissipation device.

Preferably, the box outer wall is provided with the ventilation window, the quantity of ventilation window is two, and two ventilation windows to the box is the symmetric center, and the symmetry sets up the outer wall at the box.

Preferably, the outer wall of the box body is provided with two fans.

Preferably, the number of the box supporting legs is four.

Preferably, the top of the first workbench plate is fixedly connected with a cooling liquid recovery barrel, the top surface of the cooling liquid recovery barrel is perpendicular to the fifth channel pipe, the top of the first workbench plate is fixedly connected with a hot liquid recovery barrel, and the top surface of the hot liquid recovery barrel is perpendicular to the fourth channel pipe

A process for microchannel heat exchange apparatus comprising the steps of:

s1, opening a first valve, closing to enable hot liquid to flow into the first dismounting disc device from the first pipeline, meet the cold liquid pipe, flow into the fin groove and the L-shaped pipeline, circularly reciprocate through the A group device and the B group device in the box body, flow into a fourth channel pipe, open a fourth valve and flow into the hot liquid recycling bin;

s2, opening a third valve to enable cold liquid to flow into a third channel pipe, pass through a second disc dismounting device, pass through a heat dissipation device, circularly pass through the group A device and the group B device in the box body in a reciprocating mode, flow into a fifth channel pipe and then flow into a cooling liquid recovery barrel;

s3, enabling hot liquid to flow into a first pipeline, wherein a first dismounting disc device is arranged inside the first pipeline, and a first disc A block and a first disc B block are in threaded connection through a first screw and a first nut;

s4, enabling cold liquid to flow into and pass through a third channel pipe, arranging a second disc disassembling and assembling device inside the third channel pipe, and enabling a second disc A block and a second disc B block to be in threaded connection through a second screw and a second nut;

and S5, closing the first valve and opening the second valve, so that the cleaning liquid in the hot liquid pipe flows into the fourth pipeline, flows into the fourth channel pipe by circularly reciprocating through the A group device and the B group device in the box body, and opens the fourth valve to flow into the hot liquid recovery barrel.

The invention provides a micro-channel heat exchange process and micro-channel heat exchange equipment. The method has the following beneficial effects:

(1) according to the invention, through the arrangement of the heat dissipation device, the first valve is opened, the hot liquid flows into the heat dissipation device from the first pipeline by closing, and the third valve is opened by matching with the opening of the first valve, so that the cold liquid flows into the third pipeline and flows into the heat dissipation device, thereby solving the problems that the traditional mechanical equipment cannot dissipate heat for the liquid, safety accidents are easy to happen, and the effects of mechanical heat dissipation and stable and safe production are achieved.

(2) According to the invention, the first disassembly and assembly disc device is arranged, the first valve and the second valve are closed to be matched with the third valve, so that hot liquid and cold liquid are not circulated, the first A disc block and the first B disc block are connected through the first screw and the first nut in a threaded manner, the problems that the traditional mechanical equipment cannot be disassembled and maintained are solved, and the effects of conveniently disassembling the mechanical equipment and reducing the production cost are achieved.

(3) According to the invention, the first valve and the second valve are closed to be matched with the third valve through the arrangement of the second disassembling and assembling disc device, so that hot liquid and cold liquid are not circulated, and the second A disc block and the second B disc block are connected through the second screw and the second nut in a threaded manner, so that the problems that the traditional mechanical equipment cannot be disassembled and maintained, and the effects of conveniently disassembling the mechanical equipment and reducing the production cost are achieved.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a rear view of the present invention.

Fig. 3 is a side view of the present invention.

Fig. 4 is a side view of the present invention.

Fig. 5 is a detail view of an L-shaped duct and fin slot of the fin heat sink of the present invention.

Fig. 6 is a cross-sectional view of a fin slot of the fin heat sink of the present invention.

FIG. 7 is a schematic view of a first A disk block of the first disk mounting/dismounting device of the present invention.

Fig. 8 is a part view of a first rubber pad of the first disk mounting and dismounting device of the present invention.

FIG. 9 is a schematic view of a first B disk block of the first disk mounting/dismounting device of the present invention.

FIG. 10 is a schematic view of the first screw of the first disk mounting/dismounting device of the present invention.

Fig. 11 is a component view of a first nut of the first detachable disk device of the present invention.

Fig. 12 is a part view of a second a disk block of the second removable disk apparatus of the present invention.

FIG. 13 is a part view of a second rubber pad of the second disk mounting and dismounting device of the present invention.

Fig. 14 is a part view of a second B disk block of the second disk mounting and dismounting device of the present invention.

FIG. 15 is a schematic view of a second screw of the second disk mounting and dismounting device of the present invention.

Fig. 16 is a component view of a second nut of the second disc removable device of the present invention.

Fig. 17 is a detail view of the second and first tubes of the heat sink of the present invention.

In the figure: 1. a box body; 2. a fin heat sink; 201. an L-shaped pipeline; 202. a warping groove; 3. a first disk mounting and dismounting device; 301. a first A disk block; 302. a first rubber pad; 303. a first B-disk block; 304. a first screw; 305. a first nut; 4. a heat sink; 401. a second conduit; 5. a first valve; 6. a first conduit; 7. a second disk mounting and dismounting device; 701. a second A disk block; 702. a second rubber pad; 703. a second B disk block; 704. a second screw; 705. a second nut; 8. a second valve; 9. a fourth channel tube; 10. a fourth valve; 11. a fan; 12. a hot liquid recovery tank; 13. a box door; 14. a fifth passage pipe; 15. a cooling liquid recovery barrel; 16. a ventilation window; 18. a third passage tube; 19. a fourth conduit; 22. box body supporting legs; 23. a third valve.

Detailed Description

As shown in fig. 1-17, the present invention provides a process scheme: a micro-channel heat exchange device comprises a first working table plate 24, wherein the top of the first working table plate 24 is fixedly connected with a cooling liquid recovery barrel 15, the top surface of the cooling liquid recovery barrel 15 is vertical to a fifth channel pipe 14, the top of the first working table plate 24 is fixedly connected with a hot liquid recovery barrel 12, the top surface of the hot liquid recovery barrel 12 is vertical to a fourth channel pipe 9, the top of the first working table plate 24 is fixedly connected with box body supporting legs 22, the number of the box body supporting legs 22 is four, the top of the box body supporting legs 22 is fixedly connected with a box body 1, the number of A groups of devices in the box body 1 is two, the number of B groups of devices in the box body 1 is three, the A groups of devices comprise a first assembling and disassembling disc device 3, a second assembling and disassembling disc device 7, a heat dissipation device 4 and a fin heat dissipation device 2, the B groups of devices comprise two fin heat dissipation devices 2, a second assembling and disassembling disc device 7 and a heat dissipation device 4, a first pipeline 6 penetrates through one side of the box body 1, a ventilation window 16 is arranged on the outer wall of the box body 1, the number of the ventilation windows 16 is two, the two ventilation windows 16 are symmetrically arranged on the outer wall of the box body 1 by taking the box body 1 as a symmetrical center, a fan 11 is arranged on the outer wall of the box body 1, the number of the fans 11 is two, a first valve 5 is fixedly connected to the right part of the first pipeline 6, the first valve 5 is opened, hot liquid flows into the first pipeline 6 from the first dismounting and mounting disc device 3 by closing, the heat radiating device 4 meets a cold liquid pipe, the hot liquid flows into the fin grooves 202 and 201L-shaped pipelines, circularly and reciprocally passes through the A group device and the B group device in the box body, so as to flow into a fourth channel pipe 9, the fourth valve 10 is opened, the hot liquid flows into the hot liquid recycling tank 12, the heat radiating effect of the hot channel pipe is achieved, a fourth channel 19 is communicated with the bottom of the first pipeline 6, and a second valve 8 is fixedly connected with the bottom of the fourth channel 19, the first valve 5 is closed, the second valve 8 is opened, cleaning liquid in the hot liquid pipe flows into the fourth pipeline 19, the cleaning liquid flows into the fourth pipeline 9 through the group A device and the group B device in the box body in a circulating reciprocating mode, the cleaning liquid flows into the fourth channel pipe 9, the fourth valve 10 is opened, the hot liquid recovery barrel 12 flows, the effect of cleaning the hot pipeline is achieved, the first disassembling and assembling disc device 3 is fixedly connected to the left portion of the first pipeline 6, the first disassembling and assembling disc device 3 is arranged through the first disassembling and assembling disc device 3, the first valve 5 and the second valve 8 are closed in a matched mode, the third valve 23 is closed, hot liquid and cold liquid are enabled not to flow, the first A disc block 301 and the first B disc block 303 are in threaded connection through the first screw rod 304 and the first nut 305, the problem that traditional mechanical equipment cannot be disassembled and maintained is solved, the effects of facilitating disassembly of the mechanical equipment and reducing production cost are achieved, and the first disassembling and assembling disc device 3 comprises the first A disc block 301, the first rubber pad 302, The heat dissipation device comprises a first B-disc block 303, a first screw 304 and a first nut 305, wherein the right part of the first A-disc block 301 is fixedly connected with the outer wall of a first pipeline 6, the right part of a first rubber pad 302 is movably contacted with the left part of the first A-disc block 301, the right part of the first B-disc block 303 is movably contacted with the left part of the first rubber pad 302, the right part of the first pipeline 6 is fixedly connected with the left part of the first B-disc block 303, the left part of the first pipeline 6 is fixedly connected with a heat dissipation device 4, the left part of the heat dissipation device 4 is fixedly connected with a fin heat dissipation device 2, the fin heat dissipation device 2 comprises an L-shaped pipeline 201 and a fin groove 202, the right part of the L-shaped pipeline 201 is fixedly connected with the left part of the heat dissipation device 4, the fin grooves 202 are uniformly arranged inside the L-shaped pipeline 201, the fin grooves 202 are communicated and arranged inside the L-shaped pipeline 201, the heat dissipation device 4 comprises a second pipeline 401, the bottom of the heat dissipation device 4 is fixedly connected with a third channel 18, through the arrangement of the heat dissipation device 4, the first valve 5 is opened, the third valve 23 is opened by closing to enable hot liquid to flow into the heat dissipation device 4 from the first pipeline 6, the cold liquid flows into the heat dissipation device 4 through the cooperation of opening the third valve 23 and enabling the cold liquid to flow into the third channel pipe 18, so that the problems that the traditional mechanical equipment cannot dissipate heat for the liquid and safety accidents easily occur are solved, the effects of mechanical heat dissipation and stable and safe production are achieved, the third channel pipe 18 is communicated and arranged inside the second channel pipe 401, the second dismounting disc device 7 is fixedly connected to the outer wall of the third channel pipe 18, the third valve 23 is closed by the cooperation of closing the first valve 5 and the second valve 8 through the arrangement of the second dismounting disc device 7, so that the hot liquid and the cold liquid are not communicated, the second A disc block 701 and the second B disc block 703 are connected through the second screw rod 704 and the second nut 705 in a threaded manner, the problems that the traditional mechanical equipment cannot be dismounted and maintained are solved, the effects of facilitating the dismounting of the mechanical equipment and reducing the production cost are achieved, the second disk dismounting device 7 comprises a second A disk block 701, a second rubber pad 702, a second B disk block 703, a second screw 704 and a second nut 705, wherein the top of the second A disk block 701 is fixedly connected with the outer wall of a third channel pipe 18, the top of the second rubber pad 702 is movably contacted with the outer wall of the second A disk block 701, the top of the first B disk block 703 is movably contacted with the bottom of the second rubber pad 702, the outer wall of the third channel pipe 18 is fixedly connected with the bottom of the second B disk block 303, the outer wall of the third channel pipe 18 is fixedly connected with a third valve 23, the left part of the heat dissipation device 4 is fixedly connected with a fourth channel pipe 9, the left part of the fourth channel pipe 9 movably penetrates through a box body 1, the fourth channel pipe 9 extends to the outer side of the box body 1 and is fixedly connected with a fourth valve 10, the outer wall of the heat dissipation device 4 is fixedly connected with a fifth channel pipe 14, the top of the fifth channel pipe 14 movably penetrates through the inner wall of the box body 1 to extend to the outer side of the box body 1, the left part of the box body 1 is movably hinged with a box body door 13, and the inner wall of the second pipeline 401 is sleeved with a first pipeline 6.

A process for microchannel heat exchange apparatus comprising the steps of:

s1, opening the first valve 5, closing the first pipe 6 to make the hot liquid flow into the first mounting/dismounting plate device 3, the heat sink 4 meets the cold liquid pipe, the liquid flows into the fin grooves 202 and 201L pipes, and flows through the group a and group B devices in the box body to flow into the fourth pipe 9, and the fourth valve 10 is opened to flow into the hot liquid recycling tank 12;

s2, opening a third valve 23 to enable cold liquid to flow into a third channel pipe 18, pass through a second disc dismounting device 7, pass through a heat dissipation device 4, circularly pass through a group A device and a group B device in the box body in a reciprocating mode, flow into a fifth channel pipe 14 and then flow into a cooling liquid recovery barrel 15;

s3, hot liquid flows into the first pipeline 6, the first disc disassembling and assembling device 3 is arranged inside the first pipeline 6, and the first A disc block 301 and the first B disc block 303 are in threaded connection through the first screw 304 and the first nut 305;

s4, cold liquid flows in and passes through the third channel pipe 18, a second disc disassembling and assembling device 7 is arranged inside the third channel pipe 18, and the second A disc block 701 and the second B disc block 703 are in threaded connection through a second screw 704 and a second nut 705;

s5, closing the first valve 5 and opening the second valve 8, so that the cleaning liquid in the hot fluid pipe flows into the fourth pipe 19, flows into the fourth channel pipe 9 by circulating and reciprocating through the device group a and the device group B inside the tank body, and opens the fourth valve 10 and flows into the hot liquid recovery barrel 12.

Claims

1. A microchannel heat exchange apparatus comprising a first platen (24), characterized in that: the top of the first workbench plate (24) is fixedly connected with box supporting legs (22), the top of the box supporting legs (22) is fixedly connected with a box body (1), one side of the box body (1) is fixedly penetrated with a first pipeline (6), the right part of the first pipeline (6) is fixedly connected with a first valve (5), the bottom of the first pipeline (6) is communicated with a fourth pipeline (19), the bottom of the fourth pipeline (19) is fixedly connected with a second valve (8), the left part of the first pipeline (6) is fixedly connected with a first dismounting and mounting plate device (3), the first dismounting and mounting plate device (3) comprises a first A plate block (301), a first rubber pad (302), a first B plate block (303), a first screw rod (304) and a first nut (305), the right part of the first A plate block (301) is fixedly connected with the outer wall of the first pipeline (6), the right part of first rubber pad (302) and the left part swing joint of first A dish piece (301), the right part of first B dish piece (303) and the left part swing joint of first rubber pad (302), the right part of first pipeline (6) and the left part fixed connection of first B dish piece (303), the left part fixedly connected with heat abstractor (4) of first pipeline (6), heat abstractor (4) include second pipeline (401), the inner wall cover of second pipeline (401) is equipped with first pipeline (6).

2. A microchannel heat exchange device according to claim 1 wherein: the left part fixedly connected with fin heat abstractor (2) of heat abstractor (4), fin heat abstractor (2) include L type pipeline (201), fin groove (202), the right part of L type pipeline (201) and the left part fixed connection of heat abstractor (4), fin groove (202) evenly set up the inside at L type pipeline (201), fin groove (202) intercommunication sets up the inside at L type pipeline (201).

3. A microchannel heat exchange device according to claim 2 wherein: the bottom of the heat dissipation device (4) is fixedly connected with a third channel pipe (18), the third channel pipe (18) is communicated with and arranged inside the second channel pipe (401), the outer wall of the third channel pipe (18) is fixedly connected with a second disc dismounting and mounting device (7), the second disc dismounting and mounting device (7) comprises a second A disc block (701), a second rubber pad (702), a second B disc block (703), a second screw (704) and a second nut (705), the top of the second A disc block (701) is fixedly connected with the outer wall of the third channel pipe (18), the top of the second rubber pad (702) is in movable contact with the outer wall of the second A disc block (701), the top of the first B disc block (703) is in movable contact with the bottom of the second rubber pad (702), the outer wall of the third channel pipe (18) is fixedly connected with the bottom of the second B disc block (303), and the outer wall of the third channel pipe (18) is fixedly connected with a third valve (23).

4. A microchannel heat exchange device according to claim 3 wherein: the left part fixedly connected with fourth passageway pipe (9) of heat abstractor (4), the left part activity of fourth passageway pipe (9) is run through and is had box (1), fourth passageway pipe (9) extend to box (1) outside and fourth valve (10) fixed connection, the outer wall fixedly connected with fifth passageway pipe (14) of heat abstractor (4), the top activity of fifth passageway pipe (14) is run through and is had box (1) inner wall to extend to the outside of box (1), the left part activity hinge of box (1) has box door (13).

5. A microchannel heat exchange device according to claim 4 wherein: the quantity of the inside A group device of box (1) is two, the quantity of the inside B group device of box (1) is three, the A group device includes first dismouting dish device (3), second dismouting dish device (7), heat abstractor (4) and fin heat abstractor (2), the B group device includes two fin heat abstractor (2), second dismouting dish device (7) and heat abstractor (4).

6. A microchannel heat exchange device according to claim 5 wherein: the outer wall of the box body (1) is provided with two ventilation windows (16), the number of the ventilation windows (16) is two, and the two ventilation windows (16) are used for the box body (1) as a symmetric center, and the two ventilation windows are symmetrically arranged on the outer wall of the box body (1).

7. A microchannel heat exchange device according to claim 6 wherein: the outer wall of the box body (1) is provided with two fans (11), and the number of the fans (11) is two.

8. A microchannel heat exchange device according to claim 7 wherein: the number of the box body supporting legs (22) is four.

9. A microchannel heat exchange device according to claim 8 wherein: the top of the first working table plate (24) is fixedly connected with a cooling liquid recovery barrel (15), the top surface of the cooling liquid recovery barrel (15) is perpendicular to the fifth channel pipe (14), the top of the first working table plate (24) is fixedly connected with a hot liquid recovery barrel (12), and the top surface of the hot liquid recovery barrel (12) is perpendicular to the fourth channel pipe (9).

10. The process of claim 9 for a microchannel heat exchange device, wherein: the method comprises the following steps:

s1, opening a first valve (5), closing to enable hot liquid to flow into the first disc dismounting device (3) from a first pipeline (6), enabling the hot liquid to flow into the first disc dismounting device (4) to meet a cold liquid pipe, enabling the hot liquid to flow into fin grooves (202) and (201) L-shaped pipelines, circularly reciprocating through the device A and the device B in the box body, and then flowing into a fourth channel pipe (9), opening a fourth valve (10), and enabling the hot liquid to flow into a hot liquid recovery barrel (12);

s2, opening a third valve (23) to enable cold liquid to flow into a third channel pipe (18), pass through a second disc dismounting device (7), pass through a heat dissipation device (4), circularly pass through a group A device and a group B device in the box body in a reciprocating mode, flow into a fifth channel pipe (14) and accordingly flow into a cooling liquid recovery barrel (15);

s3, hot liquid flows into a first pipeline (6), a first disc disassembling and assembling device (3) is arranged inside the first pipeline (6), and a first disc A block (301) and a first disc B block (303) are in threaded connection through a first screw (304) and a first nut (305);

s4, cold liquid flows into and passes through a third channel pipe (18), a second disc disassembling and assembling device (7) is arranged inside the third channel pipe (18), and a second A disc block (701) and a second B disc block (703) are in threaded connection through a second screw (704) and a second nut (705);

s5, closing the first valve (5), opening the second valve (8), enabling the cleaning liquid in the hot liquid pipe to flow into the fourth pipeline (19), and through circulating and reciprocating through the A group device and the B group device in the box body, the cleaning liquid flows into the fourth channel pipe (9), and the fourth valve (10) is opened, and the cleaning liquid flows into the hot liquid recovery barrel (12).