CN219083394U

CN219083394U - Central heating system of condensing furnace

Info

Publication number: CN219083394U
Application number: CN202223442513.7U
Authority: CN
Inventors: 孙瑞
Original assignee: Chongqing Fuyan Energy Technology Co ltd
Current assignee: Chongqing Fuyan Energy Technology Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-05-26
Anticipated expiration: 2032-12-22

Abstract

The utility model relates to the technical field of condensing furnace heating, and particularly discloses a condensing furnace central heating system; the high-efficiency heat supply system comprises a condensing furnace body, a circulating pump, a heating pipe, a filter box, four limiting plates, a filter frame and a filter screen, wherein one end of the filter box is fixedly connected with the condensing furnace body water outlet pipe, the other end of the filter box is fixedly connected with the heating pipe, one end of the circulating pump is fixedly connected with the heating pipe, the other end of the circulating pump is fixedly connected with the condensing furnace body water inlet pipe, the four limiting plates are all fixed on the inner side surface of the filter box, a replacement opening is formed in the top surface of the filter box, the filter frame is in sliding connection with the replacement opening, the two ends of the filter frame are all slid between the two limiting plates, and the filter screen is fixed on the inner surface of the filter frame.

Description

Central heating system of condensing furnace

Technical Field

The application relates to the technical field of condensing furnace heating, and particularly discloses a condensing furnace central heating system.

Background

The condensing boiler is generally referred to as a condensing boiler, the condensing boiler is to utilize an efficient condensing waste heat recovery device to absorb sensible heat in high-temperature flue gas exhausted by the boiler and latent heat released by condensation of water vapor so as to achieve the purpose of improving the heat efficiency of the boiler, and the central heating system is a central heating system of a heating system in which a heat source and a heat dissipation device are respectively arranged and connected by a heat medium pipe network, and heat is supplied to each room or each building by the heat source.

In the prior art, as in the chinese patent with publication number CN209214118U, a high-efficiency heating system of natural gas full-premix condensing boiler, comprising: the boiler comprises a boiler body, a radiator, a circulating pump and a heating pipeline, wherein the boiler body is connected with the radiator through the heating pipeline; the top of the boiler body is provided with a flue, the bottom of the boiler body is provided with a condensed water collector, a water jacket is arranged in the boiler body, and one side of the boiler body is provided with a full-premix combustion head for heating the water jacket; the side wall of the upper part of the boiler body is provided with a water supply port and a water return port which are respectively communicated with the water jacket; a water supplementing port is arranged on the side wall of the lower part of the boiler body and is communicated with the water jacket; the radiator is provided with a water inlet and a water outlet, the water inlet is connected with the water supply port through a heating pipeline, the water outlet is connected with the water return port through a heating pipeline, and the circulating pump is arranged on the heating pipeline between the water outlet and the water return port; the water inlet is internally provided with a thermistor S1, the water outlet is internally provided with a thermistor S2, and the thermistor S1 is connected with the thermistor S2 through a temperature alarm circuit.

Because the hot water is at or exceeds 60 ℃ for a long time and calcium carbonate can be separated out, and the water temperature of the natural gas full-premix condensing boiler can reach 85 ℃, the radiator of the high-efficiency heating system of the natural gas full-premix condensing boiler is easily blocked by the calcium carbonate generated in the hot water or other impurities in the hot water in the long-time use process, so that the heat provided by the radiator is reduced, namely the heating effect of the radiator is reduced.

The inventors have provided a condensing furnace central heating system in order to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a central heating system of a condensing furnace, which aims to solve the problem that a radiator of a high-efficiency heating system of a natural gas full-premix condensing boiler is easy to be blocked by sundries in hot water in a long-time use process, so that the heating effect is reduced.

In order to achieve the above object, the basic scheme of the present utility model provides a central heating system for a condensing furnace: the condensing furnace comprises a condensing furnace body, a circulating pump, a heating pipe and a filtering mechanism, wherein the filtering mechanism comprises a first valve, a second valve, a first filtering pipe, a second filtering pipe, a filtering box, four limiting plates and a filtering unit, and the filtering unit comprises a filtering frame, a filtering net, a connecting block, a protection groove body, a supporting frame, a sealing plate and a plurality of first bolts;

the utility model provides a first valve one end fixed connection condensing stove body's outlet pipe, the first filter tube of other end fixed connection, the first filter tube of filter tank two opposite sides fixed connection respectively and second filter tube, second valve one end fixed connection second filter tube, other end fixed connection heating tube, circulating pump one end fixed connection heating tube, the inlet tube of other end fixed connection condensing stove body, four limiting plates are fixed respectively on the two opposite medial surfaces of filter tank, the braced frame is fixed on the filter tank top surface, the change mouth has been seted up on the filter tank top surface, the change mouth is located the braced frame, filter frame sliding connection braced frame and change mouth, filter frame both ends all slide between two limiting plates, the filter screen is fixed on the filter frame internal surface, protection cell body sliding connection braced frame, a plurality of first bolts equal threaded connection protection cell body and braced frame, the closing plate is fixed on the internal top surface of protection cell, and butt braced frame top surface, filter frame top surface is connected to connecting block one end fixed connection, the other end passes closing plate and fixedly connects internal top surface of protection cell body.

Compared with the prior art, the principle and effect of the utility model are as follows:

1. the principle is as follows: when the heating pipe starts to heat a room, a worker starts the condensing furnace body and the circulating pump, hot water flows into the first valve from the water outlet pipe of the condensing furnace body, flows into the filter box from the first valve through the first filter pipe, enters the second filter pipe after being filtered at the filter screen, enters the heating pipe from the second filter pipe through the second valve, heats the room in the heating pipe, and then is sent into the water inlet pipe of the condensing furnace to be heated by the circulating pump, and the heated hot water circulates according to the steps, so that the circulating heating of the room can be formed;

2. the central heating system of the condensing furnace is provided with the filtering mechanism, so that the filtering mechanism can filter hot water before the hot water enters the heating pipe, the accumulation of sundries in the hot water in the heating pipe is reduced, the problem that a radiator of a high-efficiency heating system of a natural gas full-premix condensing boiler is easily blocked by sundries in the hot water in a long-time use process, thereby reducing the heating effect is solved, and the heating effect of the heating pipe in long-time use is improved;

3. the first valve and the second valve are arranged in the condensing furnace central heating system, so that a great deal of water loss in the heating pipe and the condensing furnace body can be prevented when the filter box is replaced or maintained, and the convenience of replacing the filter box is improved;

4. the central heating system of the condensing furnace is provided with the sealing plate, so that the supporting frame and the protecting groove body can be sealed, and a large amount of hot water in the filtering box is prevented from leaking from a gap between the protecting groove body and the supporting frame;

5. the central heating system of the condensing furnace is provided with the protection groove body, the supporting frame and the first bolts, so that the filter frame and the filter screen can be conveniently cleaned and replaced.

Further, still include heating mechanism, heating mechanism includes heating frame, heat-conducting plate and decorative board, has all seted up a plurality of heating grooves on heating frame both sides opposite side face, and the heating pipe is placed in a plurality of heating inslot, and the heat-conducting plate is fixed on heating frame top surface, and the butt heating pipe, and the decorative board is fixed on the deflector top surface.

Compared with the prior art, the utility model has the following effects: the heating frame can support the heating pipe, and a plurality of heating grooves can be spacing to the heating pipe, and heat conduction board and decorative board can be better the heat transfer to the room in the heating pipe.

Further, the heating mechanism further comprises an insulation board, the insulation board is fixed on the inner side face of the heating frame, and the top face of the insulation board is abutted against the heating pipe.

Compared with the prior art, the utility model has the following effects: the heated board is fixed on the heating frame medial surface, and heated board top surface butt heating pipe can reduce the absorption of ground to heating pipe heat, lets the heating pipe can provide more heat for the resident in the room, has improved the heating effect of heating pipe.

Further, the heating mechanism further comprises a plurality of reinforcing blocks, wherein the reinforcing blocks are fixed on two opposite inner sides of the heating frame and are abutted against the heating pipe, the heat conducting plate and the heat insulating plate.

Compared with the prior art, the utility model has the following effects: the reinforcing blocks are fixed on the two opposite inner sides of the heating frame, so that the pressure born by the heating frame can be shared, and the service life of the heating frame and the upper limit of the bearing pressure are prolonged.

Further, still include clearance mechanism, clearance mechanism includes that four medial surfaces are clearance frame, clearance board, clearance pole and the push-and-pull board on the inclined plane, clearance frame and clearance board all are in the rose box, and all are located between filter screen and the first valve, and clearance frame butt rose box three adjacent medial surfaces, and fix on clearance board bottom surface, clearance pole one end is fixed on clearance board top surface, and the other end passes rose box roof and fixed connection push-and-pull board.

Compared with the prior art, the utility model has the following effects: the cleaning frame can clean sundries attached to the inner side face of the right end (water inlet end) of the filter box, and the cleaning plate, the cleaning rod and the push-pull plate can enable staff to quickly move the cleaning frame, so that convenience in cleaning the filter box is improved.

Further, the cleaning mechanism further comprises a positioning pipe and a second bolt, the positioning pipe is fixed on the top surface of the filter box and is connected with the cleaning rod in a sliding mode, and the second bolt is connected with the positioning pipe and the cleaning rod in a threaded mode.

Compared with the prior art, the utility model has the following effects: the locating pipe is fixed on the filter tank top surface, and sliding connection clearance pole, second bolt threaded connection locating pipe and clearance pole can let the clearance frame keep at the filter tank top when not carrying out the clearance work, have reduced the influence of clearance frame to the interior hot water velocity of flow of filter tank.

Further, the cleaning mechanism further comprises a sealing block, wherein the sealing block is fixed on the top surface of the cleaning plate and is abutted against the inner top surface of the filter box.

Compared with the prior art, the utility model has the following effects: the sealing block is fixed on the top surface of the cleaning plate and is abutted against the inner top surface of the filter box, so that hot water can be prevented from flowing out from a gap between the cleaning rod and the top wall of the filter box, and the loss of hot water is reduced.

Further, the cleaning mechanism further comprises a drain pipe and a drain valve, one end of the drain pipe is fixedly connected with the bottom surface of the filter box, the other end of the drain pipe is fixedly connected with the drain valve, and the drain pipe is located under the cleaning frame.

Compared with the prior art, the utility model has the following effects: the drain pipe can let the rose box in time discharge debris fast after being cleared up by the clearance frame, and the drain valve can let the drain pipe keep closed state when heating by the heating pipe, has improved the practicality of drain pipe.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a central heating system of a condensing furnace according to the present utility model;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

fig. 4 is a schematic structural view of the heating frame in fig. 1.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the condensing furnace comprises a condensing furnace body 1, a first valve 2, a first filter tube 3, a cleaning rod 4, a positioning tube 5, a second bolt 6, a protection groove body 7, a first bolt 8, a filter box 9, a second filter tube 10, a second valve 11, a blow-down tube 12, a blow-down valve 13, a heating tube 14, a decorative plate 15, a heat conducting plate 16, a heating frame 17, a circulating pump 18, a reinforcing block 19, a sealing plate 20, a connecting block 21, a supporting frame 22, a filter frame 23, a limiting plate 24, a filter screen 25, a sealing block 26, a cleaning plate 27, a cleaning frame 28 and a heat insulating plate 29.

Embodiment one:

the specific implementation process of the utility model comprises the following steps: the condensing furnace central heating system comprises a condensing furnace body 1, a circulating pump 18, a heating pipe 14 and a filtering mechanism, wherein the filtering mechanism comprises a first valve 2, a second valve 11, a first filtering pipe 3, a second filtering pipe 10, a filtering box 9, four limiting plates 24 and a filtering unit, and the filtering unit comprises a filtering frame 23, a filtering net 25, a connecting block 21, a protection groove body 7, a supporting frame 22, a sealing plate 20 and a plurality of first bolts 8;

the utility model provides a first valve 2 one end fixed connection condensing stove body 1's outlet pipe, the first filter tube 3 of other end fixed connection, the first filter tube 3 of filter tank 9 two opposite sides fixed connection respectively and second filter tube 10, second valve 11 one end fixed connection second filter tube 10, the other end fixed connection heating pipe 14, circulating pump 18 one end fixed connection heating pipe 14, the inlet tube of other end fixed connection condensing stove body 1, four limiting plates 24 are fixed respectively on the two opposite medial surfaces of filter tank 9, the braced frame 22 is fixed on the filter tank 9 top surface, the change mouth has been seted up to the filter tank 9 top surface, the change mouth is located braced frame 22, filter frame 23 sliding connection braced frame 22 and change mouth, filter frame 23 both ends all slide between two limiting plates 24, filter screen 25 is fixed on filter frame 23 internal surface, protection cell body 7 sliding connection braced frame 22, a plurality of first bolts 8 all threaded connection protection cell body 7 and braced frame 22, sealing plate 20 are fixed on protection cell body 7 internal top surface, and butt braced support frame 22 top surface, 21 one end fixed connection filter frame top surface 23 top surface, other end fixed connection filter frame 20 top surface, filter frame 20 top surface is located the connection, the connection connecting plate 7 internal connection sealing plate fixed connection joint internal connection.

When the heating pipe 14 starts to heat the room, the staff starts the condensing furnace body 1 and the circulating pump 18, hot water flows into the first valve 2 from the water outlet pipe of the condensing furnace body 1, flows into the filter box 9 from the first valve 2 through the first filter pipe 3, enters the second filter pipe 10 after being filtered at the filter screen 25, enters the heating pipe 14 from the second filter pipe 10 through the second valve 11, heats the room in the heating pipe 14, then the hot water is sent into the water inlet pipe of the condensing furnace by the circulating pump 18 to heat the room, the heated hot water circulates according to the steps, thus the circulating heating to the room can be formed, the material of the filter screen 25 can be stainless steel, the material of the sealing plate 20 can be butyl rubber, when the filter screen 25 is to be replaced or maintained, the staff unscrews a plurality of first bolts 8 from the supporting frame 22, at this time, a plurality of first bolts 8 are still on the protection groove body 7, then the protection groove body 7 is moved upwards, the protection groove body 7 can bring the connecting block 21, the filtering frame 23 and the filtering screen 25 to move upwards together until the filtering frame 23 is completely far away from the supporting frame 22, the filtering screen 25 can be replaced or maintained, after the filtering screen 25 is replaced or maintained, the staff puts the filtering screen 25 and the filtering frame 23 into a replacement opening from the supporting frame 22, and enables the supporting frame 22 to abut against four limiting plates 24, at this time, the sealing plate 20 abuts against the top surface of the supporting frame 22, and then the plurality of first bolts 8 are screwed into the supporting frame 22, so that the replacement of the filtering screen 25 can be completed, and the heating pipe 14 is filled with water before the condensing furnace body 1 and the circulating pump 18 are started.

Embodiment two:

the difference from the first embodiment is that:

the utility model provides a condensing furnace central heating system, as shown in fig. 1, fig. 2 and fig. 4, still include heating mechanism, heating mechanism includes heating frame 17, heat-conducting plate 16 and decorative board 15, has all seted up a plurality of heating grooves on the opposite sides of heating frame 17, and heating pipe 14 is placed in a plurality of heating grooves, and heat-conducting plate 16 is fixed on heating frame 17 top surface, and butt heating pipe 14, and decorative board 15 is fixed on the deflector top surface.

When the heating pipe 14 is to be laid into the room, a worker can firstly fixedly install the heating frame 17 on the ground of the room, then place a part of the heating pipe 14 in a plurality of heating grooves, then fixedly install the heat conducting plate 16 on the top surface of the heating frame 17, then fixedly install the decorative plate 15 on the top surface of the heat conducting plate 16, the ground in the room can be fixedly provided with a plurality of heating mechanisms according to specific areas, the outer surface of the part of the heating pipe 14 between the second valve 11 and the heating frame 17 can be fixedly provided with a glass wool heat insulation layer, the surface of the heating frame 17 can be coated with aluminum silicate composite heat insulation paint, and the material of the heat conducting plate 16 can be aluminum.

Embodiment III:

the difference from the second embodiment is that:

as shown in fig. 2, the central heating system of the condensing furnace further comprises a heat-insulating plate 29, wherein the heat-insulating plate 29 is fixed on the inner side surface of the heating frame 17, and the top surface of the heat-insulating plate 29 is abutted against the heating pipe 14.

The heat preservation board 29 is fixed on the inner side of the heating frame 17, the top surface of the heat preservation board 29 is abutted against the heating pipe 14, so that the heat absorption of the heating pipe 14 can be reduced, the heating pipe 14 can provide more heat for residents in a room, and the heat preservation board 29 can be made of glass wool.

Embodiment four:

the difference from the third embodiment is that:

as shown in fig. 2, the central heating system of the condensing furnace further comprises a plurality of reinforcing blocks 19, wherein the reinforcing blocks 19 are fixed on two opposite inner sides of the heating frame 17 and are abutted against the heating pipe 14, the heat conducting plate 16 and the heat insulating plate 29.

The reinforcing blocks 19 are uniformly arranged on two opposite inner sides of the heating frame 17, and a part of the heating pipe 14 is arranged between every two adjacent reinforcing blocks 19 and between the reinforcing blocks 19 and the inner sides of the heating frame 17, so that the heating pipe 14 can be limited in the heating frame 17.

Fifth embodiment:

the difference from the first embodiment is that:

the utility model provides a condensing furnace central heating system, as shown in fig. 1, fig. 2 and fig. 3, still include cleaning mechanism, cleaning mechanism includes that four medial surfaces are the clearance frame 28 of inclined plane, clearance board 27, clearance pole 4 and push-and-pull board, clearance frame 28 and clearance board 27 are all in rose box 9, and all lie in between filter screen 25 and the first valve 2, clearance frame 28 butt rose box 9 three adjacent medial surface, and fix on clearance board 27 bottom surface, clearance pole 4 one end is fixed on clearance board 27 top surface, the other end passes rose box 9 roof and fixed connection push-and-pull board.

When the impurities on the inner side surface of the filter box 9 are to be cleaned, a worker grabs the push-pull plate firstly and then moves the push-pull plate downwards, the push-pull plate can move downwards together with the cleaning rod 4, the cleaning plate 27 and the cleaning frame 28, and the cleaning frame 28 can clean the impurities on the inner side surface of the filter frame 23 in the downward movement process.

Example six:

the difference from the fifth embodiment is that:

as shown in fig. 1, 2 and 3, the cleaning mechanism further comprises a positioning tube 5 and a second bolt 6, the positioning tube 5 is fixed on the top surface of the filter box 9 and is connected with the cleaning rod 4 in a sliding manner, and the second bolt 6 is connected with the positioning tube 5 and the cleaning rod 4 in a threaded manner.

The first locating threaded hole has been seted up on the locating pipe 5 side, has seted up the second locating threaded hole on the clearance pole 4 side, and first locating threaded hole and second locating threaded hole all cooperate with second bolt 6, and after the debris clearance on clearance box 9 medial surface of clearance frame 28 finishes, the staff removes clearance pole 4 downwards, and clearance pole 4 can take clearance frame 28 to upwards move together, until first locating threaded hole aligns with second locating threaded hole, and the staff can screw in first locating threaded hole and second locating threaded hole with second bolt 6, forms the location to clearance pole 4 and clearance frame 28.

Embodiment seven:

the difference from the fifth embodiment is that:

as shown in fig. 2 and 3, the cleaning mechanism further comprises a sealing block 26, and the sealing block 26 is fixed on the top surface of the cleaning plate 27 and abuts against the inner top surface of the filter box 9.

The sealing block 26 is fixed on the top surface of the cleaning plate 27 and is abutted against the inner top surface of the filter box 9, so that hot water can be prevented from flowing out from a gap between the cleaning rod 4 and the top wall of the filter box 9, the loss of hot water is reduced, and the sealing block 26 can be made of butyl rubber.

Example eight:

the difference from the fifth embodiment is that:

as shown in fig. 1 and 2, the cleaning mechanism further comprises a drain pipe 12 and a drain valve 13, one end of the drain pipe 12 is fixedly connected with the bottom surface of the filter box 9, the other end is fixedly connected with the drain valve 13, and the drain pipe 12 is located under the cleaning frame 28.

The drain pipe 12 can make the filter box 9 in time discharge sundries fast after being cleaned by the cleaning frame 28, and the drain valve 13 can make the drain pipe 12 keep a closed state when the heating pipe 14 heats, and the drain pipe 12 can be made of stainless steel.

When the condensing furnace central heating system works, a worker starts the condensing furnace body 1 and the circulating pump 18, hot water flows into the first valve 2 from the water outlet pipe of the condensing furnace body 1, flows into the filter box 9 from the first valve 2 through the first filter pipe 3, enters the second filter pipe 10 after being filtered at the filter screen 25, enters the heating pipe 14 from the second filter pipe 10 through the second valve 11, heats a room in the heating pipe 14, and then is sent into the condensing furnace water inlet pipe by the circulating pump 18 to be heated, the heated hot water circulates according to the steps, so that the circulating heating of the room can be formed, the filter screen 25 can be made of stainless steel, and the sealing plate 20 can be made of butyl rubber.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, one of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A condensing furnace central heating system, characterized in that: the condensing furnace comprises a condensing furnace body, a circulating pump, a heating pipe and a filtering mechanism, wherein the filtering mechanism comprises a first valve, a second valve, a first filtering pipe, a second filtering pipe, a filtering box, four limiting plates and a filtering unit, and the filtering unit comprises a filtering frame, a filtering net, a connecting block, a protection groove body, a supporting frame, a sealing plate and a plurality of first bolts;

2. The condensing furnace central heating system according to claim 1, wherein: still include heating mechanism, heating mechanism includes heating frame, heat-conducting plate and decorative board, has all seted up a plurality of heating grooves on heating frame both sides opposite side face, and the heating pipe is placed in a plurality of heating inslot, and the heat-conducting plate is fixed on heating frame top surface, and the butt heating pipe, and the decorative board is fixed on the deflector top surface.

3. The condensing furnace central heating system according to claim 2, wherein: the heating mechanism further comprises an insulation board, the insulation board is fixed on the inner side face of the heating frame, and the top face of the insulation board is abutted against the heating pipe.

4. A condensing furnace central heating system according to claim 3, characterized by: the heating mechanism further comprises a plurality of reinforcing blocks, wherein the reinforcing blocks are fixed on two opposite inner sides of the heating frame and are abutted against the heating pipe, the heat conducting plate and the heat insulating plate.

5. The condensing furnace central heating system according to claim 1, wherein: still include clearance mechanism, clearance mechanism includes that four medial surfaces are clearance frame, clearance board, clearance pole and the push-and-pull board on the inclined plane, clearance frame and clearance board all are in the rose box, and all are located between filter screen and the first valve, and clearance frame butt filtration case three adjacent medial surface, and fix on clearance board bottom surface, clearance pole one end is fixed on clearance board top surface, and the other end passes rose box roof and fixed connection push-and-pull board.

6. The condensing furnace central heating system according to claim 5, wherein: the cleaning mechanism further comprises a positioning pipe and a second bolt, the positioning pipe is fixed on the top surface of the filter box and is connected with the cleaning rod in a sliding mode, and the second bolt is connected with the positioning pipe and the cleaning rod in a threaded mode.

7. The condensing furnace central heating system according to claim 5, wherein: the cleaning mechanism further comprises a sealing block, wherein the sealing block is fixed on the top surface of the cleaning plate and is abutted against the inner top surface of the filter box.

8. The condensing furnace central heating system according to claim 5, wherein: the cleaning mechanism further comprises a drain pipe and a drain valve, one end of the drain pipe is fixedly connected with the bottom surface of the filter box, the other end of the drain pipe is fixedly connected with the drain valve, and the drain pipe is located under the cleaning frame.