CN217964014U

CN217964014U - Scrap collecting structure for aluminum alloy door wire drawing

Info

Publication number: CN217964014U
Application number: CN202221955161.2U
Authority: CN
Inventors: 胡贵翔; 刘威振; 党月魁
Original assignee: Henan Boyasung Electronic Manufacturing Co ltd
Current assignee: Henan Boyasung Electronic Manufacturing Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-12-06
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a structure is collected to sweeps for aluminum alloy door wire drawing, the power distribution box comprises a box body, the wire drawing structure, clean the structure, wash structure and filtration, the left side swing joint of box has the chamber door, the first bracing piece of the bottom fixedly connected with of box inner chamber, the frame is collected to the top fixedly connected with of first bracing piece, carry out the wire drawing to aluminum alloy ex-trusions through the wire drawing structure, clean the piece that the structure produced the wire drawing and clean to collecting in the frame, wash the discharge gate that the piece that the structure will collect in the frame and rush into the collection frame, filtration will collect the intraoral piece of frame discharge and filter and collect, water after the filtration can recycle, the water economy resource, can clean with the piece that the wire drawing produced, can concentrate the collection to the piece after cleaning again, avoided the piece to stay in the gully that aluminum alloy ex-trusions wire drawing produced promptly, the phenomenon that can't wash, the manual work has been avoided again to clean the collection phenomenon once more with the piece.

Description

Scrap collecting structure for aluminum alloy door wire drawing

Technical Field

The utility model belongs to the technical field of the aluminium alloy door processing, especially, relate to a sweeps collection structure is used in aluminium alloy door wire drawing.

Background

In the furniture trade, according to the raw and other materials difference of preparation, the door mainly divide into glass door, wooden door and metal door etc. and wherein the aluminium alloy door is exactly one kind among the metal door, in the aluminium alloy door course of working, need carry out the wire drawing processing with aluminium alloy ex-trusions surface, has increased the feel and the aesthetic property of aluminium alloy door, and traditional wire drawing technology is by the manual wire drawing of staff, and along with the continuous progress of science and technology, wire drawing equipment replaces artifical manual wire drawing gradually.

The existing equipment for drawing the aluminum alloy section bar can generate a large amount of aluminum alloy scraps when in use, in order to avoid the scraps from influencing the drawing work, the existing solution mode is mainly realized by water flow flushing, the generated scraps are flushed out of the equipment along with high-pressure water flow, however, the cleaning mode is single, the cleaning effect is poor, the scraps can be remained in gullies generated by drawing the aluminum alloy section bar and cannot be flushed, in addition, the scraps can still remain around the equipment, and the scraps need to be manually cleaned and collected again.

SUMMERY OF THE UTILITY MODEL

For solving the problem that exists among the prior art, the utility model provides an aluminium alloy door is sweeps collection structure for wire drawing, carry out the wire drawing to aluminium alloy ex-trusions through the wire drawing structure, clean the piece that the structure produced the wire drawing and clean to collecting in the frame, wash the discharge gate that the piece that the structure will collect in the frame rushed into the collection frame, filtration structure will collect the piece in the frame discharge gate and filter the collection, water after the filtration can recycle, water economy resource, can clean the piece that the wire drawing produced, can concentrate the collection to the piece after the cleanness again, avoided the piece to deposit promptly and stay in the gully that aluminium alloy ex-trusions wire produced, the phenomenon that can't wash, the artifical phenomenon of collecting of cleaning the piece once more of needs have been avoided again.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a structure is collected to sweeps for aluminum alloy door wire drawing, includes box, wire drawing structure, cleans the structure, washes structure and filtration:

a box door is movably connected to the left side of the box body, a first supporting rod is fixedly connected to the bottom of an inner cavity of the box body, a collecting frame is fixedly connected to the top of the first supporting rod, a second supporting rod is fixedly connected to the bottom of the inner cavity of the collecting frame, and an operating table is fixedly connected to the top of the second supporting rod;

the wire drawing structure comprises a guide groove, a screw rod, a first motor, a guide block, a connecting rod, a supporting plate, an electric telescopic rod, a fixing frame, a rotating rod, a wire drawing roller and a second motor, wherein the guide groove is fixedly connected to the left side and the right side of the operating platform, the screw rod is rotationally connected to the guide groove, the first motor is fixedly connected to the front side of the guide groove, an output shaft of the first motor extends into the guide groove and is fixedly connected with the screw rod, the guide block in threaded connection with the screw rod is slidably connected to the guide groove, the connecting rod is fixedly connected to the top of the guide block, the supporting plate is fixedly connected to the top of the connecting rod, the electric telescopic rod is fixedly connected to the bottom of the supporting plate, the fixing frame is fixedly connected to the telescopic end of the electric telescopic rod, the rotating fixing frame is connected with the rotating rod, the wire drawing roller located in the fixing frame is sleeved on the side surface of the rotating rod, the second motor is fixedly connected to the right side of the fixing frame, and an output shaft of the second motor extends into the fixing frame and is fixedly connected with the rotating rod;

the cleaning structure comprises a U-shaped push plate, a driven rod, a roller brush, a first belt pulley, a second belt pulley and a belt, wherein the U-shaped push plate is fixedly connected to the front side of the fixing frame, the driven rod is rotationally connected in the U-shaped push plate, the roller brush located in the U-shaped push plate is sleeved on the side surface of the driven rod, the left end of the rotating rod extends out of the left side of the fixing frame and is sleeved with the first belt pulley, the left end of the driven rod extends out of the left side of the U-shaped push plate and is sleeved with the second belt pulley, and the first belt pulley is in transmission connection with the second belt pulley through the belt;

the washing structure comprises a fixed rod, a first spray head and a second spray head, the fixed rod is fixedly connected to the left side and the right side of the inner cavity of the collecting frame, the first spray head is fixedly connected to one end, away from the collecting frame, of the fixed rod, and the second spray head is fixedly connected to the bottom of the collecting frame;

the utility model discloses a dirty box of box inner chamber, including box inner chamber, filter structure, box inner chamber, box outer chamber, box inner chamber, the top fixedly connected with of third bracing piece stores up dirty box, the feed inlet department of storing up dirty box top and the discharge gate department of collecting the frame bottom are through the blow off pipe intercommunication, sliding connection has the dirty frame of storage in the dirty box of storage, the bottom fixedly connected with filter screen of the dirty frame of storage, the staff opens the chamber door, places the aluminum alloy ex-trusions on the operation panel, carries out the wire drawing to the aluminum alloy ex-trusions through the wire drawing structure, cleans the piece that the structure produced the wire drawing and cleans to collecting in the frame, washes the discharge gate that the piece that the structure will collect in the frame rushes into the frame, and the filter structure filters the collection with the piece that collects in the frame discharge gate, can clean the piece that the wire drawing produced, can concentrate the piece after cleaning again, has avoided the piece to remain in the gully that the aluminum alloy ex-situ drawing produced promptly, and the phenomenon that can's unable washing has avoided the manual work to clean the piece again.

Furthermore, the left side and the right side of the bottom of the inner cavity of the tank body are fixedly connected with water storage tanks, water inlets at the tops of the water storage tanks are communicated with water inlet pipes, water pumps are fixedly connected with the bottoms of the inner cavities of the water storage tanks, water outlets of the water pumps are communicated with water inlets of the first spray heads through water pipes, side faces of the water pipes are communicated with branch pipes, water outlet ends of the branch pipes extend into the collecting frame and are communicated with water inlets of the second spray heads, clean water is conveyed into the water storage tanks through the water inlet pipes, the water pumps are started to pump the clean water in the water storage tanks into the water pipes, the first spray heads can spray water, meanwhile, the branch pipes convey the water in the water pipes to the second spray heads, the second spray heads can discharge water, and water discharge of the first spray heads and the second spray heads is facilitated.

Furthermore, the water outlet at the bottom of the sewage storage tank is communicated with the water inlet on the side surface of the water storage tank through a return pipe, and filtered water in the sewage storage tank is returned to the water storage tank through the return pipe, so that the cleaning water can be recycled, and water resources are saved.

Compared with the prior art, the beneficial effects of the utility model are that: the box door is opened by a worker, the aluminum alloy section is placed on the operating platform, the aluminum alloy section is subjected to wire drawing through the wire drawing structure, the chips generated by the wire drawing are cleaned in the collecting frame by the cleaning structure, the chips in the collecting frame are flushed into the discharge hole of the collecting frame by the flushing structure, the chips in the discharge hole of the collecting frame are filtered and collected by the filtering structure, the filtered water can be recycled, and therefore water resources are saved, the chips generated by the wire drawing can be cleaned, the cleaned chips can be collected in a centralized manner, the phenomenon that the chips are remained in a gully generated by the wire drawing of the aluminum alloy section and cannot be flushed is avoided, and the phenomenon that the chips are manually cleaned and collected again is avoided.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is a schematic view of a partial structure of the wire drawing structure of the present invention;

FIG. 4 is a schematic view of the structure of the dirt storage frame of the present invention;

fig. 5 is a schematic view of a part a of the enlarged structure in fig. 3 according to the present invention.

In the figure: the device comprises a box body 1, a wire drawing structure 2, a guide groove 201, a screw rod 202, a first motor 203, a guide block 204, a connecting rod 205, a supporting plate 206, an electric telescopic rod 207, a fixed frame 208, a 209 rotating rod, a wire drawing roller 210, a second motor 211, a cleaning structure 3, a 301U-shaped push plate, a 302 driven rod, a 303 roller brush, a 304 first belt pulley, a 305 second belt pulley, a 306 belt, a 4 flushing structure, a 401 fixed rod, a 402 first spray head, a 403 second spray head, a 5 filtering structure, a 501 third supporting rod, a 502 dirt storage tank, a 503 dirt discharge pipe, a 504 dirt storage frame, a 505 filter screen, a 6 box door, a 7 first supporting rod, an 8 collection frame, a 9 second supporting rod, a 10 operating platform, a 11 water storage tank, a 12 water inlet pipe, a 13 water pump, a 14 water pipe, a 15 branch pipe and a 16 return pipe.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The embodiment is as follows:

referring to the attached drawings 1-5, the scrap collecting structure for the wire drawing of the aluminum alloy door comprises a box body 1, a wire drawing structure 2, a cleaning structure 3, a flushing structure 4 and a filtering structure 5:

a box door 6 is movably connected to the left side of the box body 1, a first supporting rod 7 is fixedly connected to the bottom of an inner cavity of the box body 1, a collecting frame 8 is fixedly connected to the top of the first supporting rod 7, a second supporting rod 9 is fixedly connected to the bottom of an inner cavity of the collecting frame 8, and an operating table 10 is fixedly connected to the top of the second supporting rod 9;

the wire drawing structure 2 comprises a guide groove 201, a screw 202, a first motor 203, a guide block 204, a connecting rod 205, a supporting plate 206, an electric telescopic rod 207, a fixed frame 208, a rotating rod 209, a wire drawing roller 210 and a second motor 211, the guide groove 201 is fixedly connected to the left side and the right side of the operating platform 10, the screw 202 is rotatably connected to the guide groove 201, the first motor 203 is fixedly connected to the front side of the guide groove 201, an output shaft of the first motor 203 extends into the guide groove 201 and is fixedly connected with the screw 202, the guide block 204 in threaded connection with the screw 202 is slidably connected to the guide groove 201, the connecting rod 205 is fixedly connected to the top of the guide block 204, the supporting plate 206 is fixedly connected to the top of the connecting rod 205, the electric telescopic rod 207 is fixedly connected to the bottom of the supporting plate 206, the fixed frame 208 is fixedly connected to the telescopic end of the electric telescopic rod 207, the rotating rod 209 is rotatably connected to the fixed frame 208, the wire drawing roller 210 located in the fixed frame 208 is sleeved on the side surface of the rotating rod 209, the second motor 211 is fixedly connected to the right side of the fixed frame 208, and the second motor 211 extends into the fixed frame 208 and is fixedly connected to the rotating rod 209;

the cleaning structure 3 comprises a U-shaped push plate 301, a driven rod 302, a roller brush 303, a first belt pulley 304, a second belt pulley 305 and a belt 306, the U-shaped push plate 301 is fixedly connected to the front side of the fixing frame 208, the driven rod 302 is rotatably connected to the U-shaped push plate 301, the roller brush 303 positioned in the U-shaped push plate 301 is sleeved on the side surface of the driven rod 302, the left end of the rotating rod 209 extends out of the left side of the fixing frame 208 and is sleeved with the first belt pulley 304, the left end of the driven rod 302 extends out of the left side of the U-shaped push plate 301 and is sleeved with the second belt pulley 305, and the first belt pulley 304 is in transmission connection with the second belt pulley 305 through the belt 306;

the flushing structure 4 comprises a fixing rod 401, a first spray nozzle 402 and a second spray nozzle 403, the fixing rod 401 is fixedly connected to the left side and the right side of the inner cavity of the collecting frame 8, the first spray nozzle 402 is fixedly connected to one end, far away from the collecting frame 8, of the fixing rod 401, and the second spray nozzle 403 is fixedly connected to the bottom of the collecting frame 8;

the filtering structure 5 comprises a third supporting rod 501, a sewage storage tank 502, a sewage discharge pipe 503, a sewage storage frame 504 and a filter screen 505, the bottom of the inner cavity of the box body 1 is fixedly connected with the third supporting rod 501, the top of the third supporting rod 501 is fixedly connected with the sewage storage tank 502, a feed inlet at the top of the sewage storage tank 502 is communicated with a discharge outlet at the bottom of the collecting frame 8 through the sewage discharge pipe 503, the sewage storage tank 502 is connected with the sewage storage frame 504 in a sliding manner, the filter screen 505 is fixedly connected at the bottom of the sewage storage frame 504, a worker opens the box door 6 and places the aluminum alloy profile on the operating platform 10, the electric telescopic rod 207 is started to drive the fixing frame 208 to move downwards until the wire drawing roller 210 is contacted with the aluminum alloy profile on the operating platform 10, the second motor 211 is started to drive the rotating rod 209 to rotate, the rotating rod 209 to drive the wire drawing roller 210 to rotate, the wire drawing roller 210 starts to draw the aluminum alloy profile, the first motor 203 is started to drive the screw 202 to rotate, the guide block 204 moves back and forth in the guide groove 201 along with the rotation of the screw 202, the guide block 204 drives the connecting rod 205 to move, the connecting rod 205 drives the supporting plate 206 to move, the fixed frame 208 moves along with the supporting plate 206 synchronously through the electric telescopic rod 207, the wire drawing roller 210 moves along with the fixed frame 208 synchronously through the rotating rod 209, the wire drawing roller 210 further moves back and forth on the aluminum alloy section to finish wire drawing, in the process, the rotating rod 209 drives the first belt pulley 304 to rotate, the second belt pulley 305 rotates along with the first belt pulley 304 through the belt 306, the second belt pulley 305 drives the driven rod 302 to rotate, the driven rod 302 drives the roller brush 303 to rotate, the brush bristles sweep debris out of a gully generated by wire drawing in the rotating process of the roller brush 303, the fixed frame 208 drives the U-shaped push plate 301 to move, and the U-shaped push plate 301 pushes the debris on the aluminum alloy section to fall to the bottom of the collecting frame 8 in the moving process, simultaneously, first shower nozzle 402 goes out water and further washes remaining piece on to the aluminum alloy ex-trusions, the piece falls to collection frame 8 bottom along with rivers rush, the completion is to clastic cleanness, second shower nozzle 403 goes out water and dashes into blow off pipe 503 with the piece of collecting frame 8 bottom, mix in the blow off pipe 503 clastic water and get into in storing up dirty case 502, and fall into and store up dirty frame 504, filter screen 505 filters the water of mixing the piece in storing up dirty frame 504, the piece after the filtration is deposited and is kept in storing up dirty frame 504, the completion is collected the piece.

The equal fixedly connected with storage water tank 11 in the left and right sides of box 1 inner chamber bottom, the water inlet department at storage water tank 11 top communicates has inlet tube 12, the bottom fixedly connected with water pump 13 of storage water tank 11 inner chamber, the delivery port department of water pump 13 and the water inlet department of first shower nozzle 402 communicate through water pipe 14, the side intercommunication of water pipe 14 has branch pipe 15, the delivery end of branch pipe 15 extends to in collecting frame 8 and communicates with the water inlet department of second shower nozzle 403, carry clean water to storage water tank 11 in through inlet tube 12, start water pump 13 and take out the clean water in the storage water tank 11 to in the water pipe 14, and then make first shower nozzle 402 can spout water, and simultaneously, branch pipe 15 carries the water in the water pipe 14 to second shower nozzle 403, make second shower nozzle 403 can go out water.

The water outlet at the bottom of the dirt storage tank 502 is communicated with the water inlet on the side surface of the water storage tank 11 through a return pipe 16, and the return pipe 16 returns the filtered water in the dirt storage tank 502 to the water storage tank 11.

The working principle is as follows: in the present invention, the operator opens the box door 6, places the aluminum alloy profile on the operation table 10, starts the electric telescopic rod 207 to drive the fixing frame 208 to move downward until the wire drawing roller 210 contacts the aluminum alloy profile on the operation table 10, starts the second motor 211 to drive the rotating rod 209 to rotate, the rotating rod 209 to drive the wire drawing roller 210 to rotate, and then the wire drawing roller 210 starts to draw the aluminum alloy profile, starts the first motor 203 to drive the screw 202 to rotate, the guide block 204 reciprocates back and forth in the guide groove 201 as the screw 202 rotates, the guide block 204 drives the connecting rod 205 to move, the connecting rod 205 drives the supporting plate 206 to move, the fixing frame 208 moves synchronously with the supporting plate 206 through the electric telescopic rod 207, the wire drawing roller 210 moves synchronously with the fixing frame 208 through the rotating rod 209 to reciprocate back and forth on the aluminum alloy profile to complete wire drawing, in this process, the rotating rod 209 drives the first belt pulley 304 to rotate, the second belt pulley 305 rotates along with the first belt pulley 304, the second belt pulley 305 drives the water storage tank 302 to rotate, the water storage tank 302 to clean water storage tank 12, the water pipe moves from the water pump 12 to the water storage tank, and the cleaning head 12, the cleaning water tank 11, the cleaning head can clean the water inlet pipe 12, and clean the water outlet pipe, the water outlet pipe 12, the piece is along with rivers towards collection frame 8 bottom, accomplish the cleanness to the piece, second shower nozzle 403 goes out during the piece that water will collect frame 8 bottom rushes into blow off pipe 503, has in the blow off pipe 503 muddy clastic water entering in storing up dirty case 502 to fall into storing up dirty frame 504, filter screen 505 filters the water that mixes the piece in storing up dirty frame 504, the piece after the filtration is stayed in storing up dirty frame 504, the completion is to the collection back flow 16 of piece with storing up the water after the filtration in dirty case 502 return to storage water tank 11, accomplish water cycle and use.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, it will be obvious to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a structure is collected to sweeps for aluminum alloy door wire drawing, includes box (1), wire drawing structure (2), cleans structure (3), washes structure (4) and filtration (5), its characterized in that:

a box door (6) is movably connected to the left side of the box body (1), a first supporting rod (7) is fixedly connected to the bottom of an inner cavity of the box body (1), a collecting frame (8) is fixedly connected to the top of the first supporting rod (7), a second supporting rod (9) is fixedly connected to the bottom of the inner cavity of the collecting frame (8), and an operating table (10) is fixedly connected to the top of the second supporting rod (9);

the wire drawing structure (2) comprises a guide groove (201), a screw rod (202), a first motor (203), a guide block (204), a connecting rod (205), a supporting plate (206), an electric telescopic rod (207), a fixed frame (208), a rotating rod (209), a wire drawing roller (210) and a second motor (211), wherein the guide groove (201) is fixedly connected to the left side and the right side of the operating platform (10), the screw rod (202) is rotationally connected in the guide groove (201), the first motor (203) is fixedly connected to the front side of the guide groove (201), an output shaft of the first motor (203) extends into the guide groove (201) and is fixedly connected with the screw rod (202), the guide block (204) which is in threaded connection with the screw rod (202) is slidably connected in the guide groove (201), the connecting rod (205) is fixedly connected to the top of the guide block (204), the rotating rod (206) is fixedly connected to the top of the connecting rod (205), the electric telescopic rod (207) is fixedly connected to the bottom of the supporting plate (206), the fixed frame (208) is fixedly connected with the fixed frame (208), and the wire drawing roller (209) is positioned on the side surface of the fixed frame (208), a second motor (211) is fixedly connected to the right side of the fixed frame (208), and an output shaft of the second motor (211) extends into the fixed frame (208) and is fixedly connected with the rotating rod (209);

the cleaning structure (3) comprises a U-shaped push plate (301), a driven rod (302), a roller brush (303), a first belt pulley (304), a second belt pulley (305) and a belt (306), the front side of the fixing frame (208) is fixedly connected with the U-shaped push plate (301), the driven rod (302) is rotationally connected in the U-shaped push plate (301), the roller brush (303) located in the U-shaped push plate (301) is sleeved on the side face of the driven rod (302), the left end of the rotating rod (209) extends out of the left side of the fixing frame (208) and is sleeved with the first belt pulley (304), the left end of the driven rod (302) extends out of the left side of the U-shaped push plate (301) and is sleeved with the second belt pulley (305), and the first belt pulley (304) is in transmission connection with the second belt pulley (305) through the belt (306);

the washing structure (4) comprises a fixing rod (401), a first spray head (402) and a second spray head (403), the fixing rod (401) is fixedly connected to the left side and the right side of the inner cavity of the collecting frame (8), the first spray head (402) is fixedly connected to one end, far away from the collecting frame (8), of the fixing rod (401), and the second spray head (403) is fixedly connected to the bottom of the collecting frame (8);

filtration (5) include third bracing piece (501), store up dirty case (502), blow off pipe (503), store up dirty frame (504) and filter screen (505), bottom fixedly connected with third bracing piece (501) of box (1) inner chamber, the top fixedly connected with of third bracing piece (501) stores up dirty case (502), the feed inlet department at storage dirty case (502) top and the discharge gate department of collecting frame (8) bottom communicate through blow off pipe (503), sliding connection has in storage dirty case (502) stores up dirty frame (504), the bottom fixedly connected with filter screen (505) of storing up dirty frame (504).

2. The scrap collecting structure for aluminum alloy door wire drawing according to claim 1, wherein: the equal fixedly connected with storage water tank (11) of the left and right sides of box (1) inner chamber bottom, the water inlet department intercommunication at storage water tank (11) top has inlet tube (12), bottom fixedly connected with water pump (13) of storage water tank (11) inner chamber, the delivery port department of water pump (13) and the water inlet department of first shower nozzle (402) lead to pipe (14) intercommunication, the side intercommunication of water pipe (14) has branch pipe (15), the delivery port department intercommunication of branch pipe (15) in extending to collection frame (8) and with second shower nozzle (403).

3. The scrap collecting structure for aluminum alloy door wire drawing according to claim 1, wherein: the water outlet at the bottom of the sewage storage tank (502) is communicated with the water inlet on the side surface of the water storage tank (11) through a return pipe (16).