Washing equipment

Abstract

The invention discloses washing equipment which comprises a box body, a spraying assembly, a cloth guide roller assembly, a driving assembly and a heat exchange assembly, the spraying assembly and the cloth guide roller assembly are arranged in the box body, the driving assembly is in transmission connection with the cloth guide roller assembly, the heat exchange assembly is arranged at the bottom of the box body, and the cloth guide roller assembly comprises a cloth inlet roller, an upper cloth roller, a lower cloth roller and a cloth outlet roller. Cloth is wound around the cloth feeding roller, enters the box body, bypasses the upper cloth roller and the lower cloth roller and finally is wound out of the cloth discharging roller, the spraying assembly is arranged above the upper cloth roller, the heat exchange assembly comprises a heat exchange plate, a bottom plate is arranged at the bottom of the box body, the heat exchange plate is connected with the bottom plate in parallel, and the heat exchange plate is arranged on the box body. A heat exchange channel is formed between the heat exchange plate and the bottom plate, and an external heat exchange medium can enter the heat exchange channel so as to heat liquid at the bottom of the box body. By the adoption of the cloth washing device, liquid in the box body can be indirectly heated, steam can be prevented from being directly introduced into the box body, the cloth washing effect is guaranteed, and the service life of internal parts is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cloth dyeing and finishing, and particularly relates to a washing equipment. BACKGROUND

[0002] In the process of cloth production and processing, the washing equipment is a key equipment for cleaning cloth. The existing washing equipment usually comprises a box body, and a cloth guide roller assembly for conveying cloth is arranged in the box body. In the process of cleaning cloth, in order to improve the cleaning effect, the washing water often needs to be heated. In the existing washing equipment, the heating of the washing water is usually achieved by directly introducing high-temperature water vapor generated by an external heat source into the washing water in the box body, so as to increase the temperature of the washing water. However, this direct heating method has obvious defects: the external water vapor directly enters the inside of the box body in the process of being introduced into the box body, so that the inside of the box body is directly connected with the external environment. On the one hand, impurities possibly carried by the external water vapor will enter the box body along with the water vapor, and will be mixed into the washing water, thereby affecting the cleanliness of the washing water and reducing the cleaning quality of the cloth; on the other hand, after the external water vapor enters the box body, the humidity in the box body will be significantly increased, and long-term operation will easily cause the cloth guide roller assembly, the driving assembly and other components in the box body to be rusted, thereby shortening the service life of the equipment, and also possibly adversely affecting the drying effect of the cloth. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a washing equipment which can indirectly heat the liquid in the box body, can avoid the direct introduction of steam into the box body, can ensure the washing effect of the cloth, and can prolong the service life of the internal components.

[0004] In order to solve the above technical problem, the present application provides a washing equipment, which comprises a box body, a spraying assembly and a cloth guide roller assembly arranged in the box body, a driving assembly in transmission connection with the cloth guide roller assembly, and a heat exchange assembly arranged at the bottom of the box body. The cloth guide roller assembly comprises an inlet roller, an upper roller, a lower roller and an outlet roller. Cloth is wound around the inlet roller to enter the box body, and then passes around the upper roller and the lower roller and finally is wound out from the outlet roller. The spraying assembly is arranged above the upper roller.

[0005] The driving assembly comprises a driving member in transmission connection with the upper roller and / or the lower roller. The driving member can drive the upper roller and / or the lower roller to rotate, so as to drive the cloth to move in the box body.

[0006] The heat exchange assembly comprises a heat exchange plate. The bottom of the box body is provided with a bottom plate. The heat exchange plate is in parallel connection with the bottom plate. A heat exchange channel is formed between the heat exchange plate and the bottom plate. An external heat exchange medium can enter the heat exchange channel, so as to heat the liquid at the bottom of the box body.

[0007] As an improvement of the above-mentioned scheme, a plurality of welding points are arranged on the heat exchange plate, the plurality of welding points are uniformly distributed along the heat exchange channel, an outer welding line is arranged around the heat exchange plate, the outer welding line encloses a heat exchange area, the heat exchange channel is arranged in the heat exchange area, and the welding points and the outer welding line are welded on the bottom plate.

[0008] As an improvement of the above-mentioned scheme, an inner welding line is further arranged on the heat exchange plate, one side of the heat exchange area is a first side, the opposite side of the heat exchange area is a second side, one end of the inner welding line is connected to the first side, and the other end of the inner welding line extends towards the direction of the second side without contacting the second side.

[0009] The number of the inner welding lines is multiple, and the multiple inner welding lines are parallel to each other, one end of one of the inner welding lines is connected to the first side, and the other end thereof does not contact the second side, one end of an adjacent inner welding line is connected to the second side, and the other end thereof does not contact the first side.

[0010] As an improvement of the above-mentioned scheme, a heat exchange path is formed between the two adjacent inner welding lines, the multiple inner welding lines enclose multiple heat exchange paths, and adjacent heat exchange paths are connected at the side where the inner welding lines do not contact the heat exchange area, and the positions of the heat exchange channels correspond to the positions of the heat exchange paths.

[0011] As an improvement of the above-mentioned scheme, a plurality of partitions are further arranged in the box, the positions of the partitions correspond to the positions of the inner welding lines, and the partitions are vertically connected to the corresponding positions of the bottom plate.

[0012] Flow grooves are formed between the adjacent partitions, and the liquid flows in the flow grooves, and the flow paths formed by the flow grooves correspond to the heat exchange paths.

[0013] The lower distribution roller is arranged in the flow groove.

[0014] As an improvement of the above-mentioned scheme, a communication inlet and a communication outlet are arranged on the heat exchange plate, the communication inlet is arranged at the end of the heat exchange path on one side of the heat exchange plate, and the communication outlet is arranged at the end of the heat exchange path on the other side of the heat exchange plate.

[0015] The bottom plate is arranged obliquely, one side of the box is provided with a water inlet flange, the other side is provided with a water outlet flange, the bottom plate is inclined from one side of the water inlet flange to the water outlet flange, and the inclination direction of the bottom plate is perpendicular to the extension direction of the inner welding line.

[0016] As an improvement of the above-mentioned scheme, the cloth guide roller assembly further comprises a pressing roller and a plurality of pressing pipes, the pressing roller is arranged between the upper cloth roller and the lower cloth roller, the pressing pipes are arranged between the pressing roller and the lower cloth roller, and the axes of the pressing pipes are outwardly convex curves.

[0017] The cloth enters the box through the cloth feeding roller, passes around the upper cloth roller, abuts against the side of the pressing roller, and is wound downward on the lower cloth roller, the axes of the pressing pipes are outwardly convex curves, and the outwardly convex surfaces of the pressing pipes abut against the side of the cloth.

[0018] As an improvement of the above-mentioned scheme, the washing device further comprises a top cover assembly, the top cover assembly comprises a flip cover, one end of the valve rod is hingedly connected to the top of the box, the top of the box is provided with an opening, the flip cover can cover the opening, the edge of the opening is provided with a water receiving groove, the edge of the flip cover is provided with a top plate, the top plate is vertically arranged, and the bottom of the top plate can be inserted into the water receiving groove after the flip cover covers the opening.

[0019] As an improvement of the above-mentioned scheme, the washing device further comprises a window assembly, the window assembly comprises a window sash and a lighting member, the window sash is hingedly connected to the box, the box is provided with a window opening, the window sash can cover the window opening, and the lighting member is arranged on the window sash.

[0020] The present application has the following advantages:

[0021] The washing device comprises a heat exchange assembly arranged at the bottom of the box, the heat exchange assembly comprises a heat exchange plate, the bottom of the box is provided with a bottom plate, and the heat exchange plate and the bottom plate form a closed heat exchange channel. By allowing an external heat exchange medium to enter the heat exchange channel, the heat conduction characteristics of the heat exchange plate can be used to heat the liquid at the bottom of the box, thereby indirectly heating the washing water. Compared with the conventional heating method of directly introducing steam, the indirect heating method fundamentally cuts off the direct communication path between the external medium and the internal space of the box, thereby avoiding the direct introduction of steam into the box. Since the external steam does not directly enter the box, various impurities that may be contained in the steam cannot enter the washing water in the box, thereby ensuring the cleanliness of the washing water and ensuring the washing effect of the cloth, so that the color and feel of the washed cloth remain stable. At the same time, since the steam does not directly enter the box, the humidity change in the box is only related to the evaporation of the washing water itself, and will not abnormally increase due to the continuous introduction of external steam. The contact strength between the metal parts such as the cloth guide roller assembly and the driving assembly and the steam can be reduced, the probability of rusting can be reduced, the service life of the internal parts can be prolonged, and the maintenance frequency and cost of the equipment can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a cross-sectional structure diagram of the water washing equipment of the present application;

[0023] Figure 2 is a side structure diagram of the water washing equipment of the present application;

[0024] Figure 3 is a structure diagram of the heat exchange assembly of the present application

[0025] Figure 4 is Figure 3 is a partial enlarged view of A in FIG. 5;

[0026] Figure 5 is a top view structure diagram of the heat exchange assembly of the present application;

[0027] Figure 6 is a bottom structure diagram of the water washing equipment of the present application;

[0028] Figure 7 is a partial structure diagram of the top cover assembly of the present application. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings. It is hereby declared that the up, down, left, right, front, back, inner and outer directions appearing or about to appear in the present application in the text are based on the drawings of the present application, and are not specific limitations on the present application.

[0030] Referring to Figures 1-3 , the embodiment of the present application discloses a water washing equipment, comprising a box body 1, a spraying assembly 2 and a cloth guide roller assembly 3 arranged in the box body 1, a driving assembly 4 in transmission connection with the cloth guide roller assembly 3, and a heat exchange assembly 5 arranged at the bottom of the box body 1. The box body 1 provides a closed space for the water washing process of the cloth 8, avoids the overflow of washing water and the entry of external pollutants during the cleaning process, and provides a basic support for the installation and operation of each assembly. The cloth guide roller assembly 3 comprises an incoming cloth roller 31, an upper cloth roller 32, a lower cloth roller 33 and an outgoing cloth roller 34. The cloth 8 is wound around the incoming cloth roller 31 to enter the box body 1 and then passes around the upper cloth roller 32 and the lower cloth roller 33 and finally winds out from the outgoing cloth roller 34. The incoming cloth roller 31 in the cloth guide roller assembly 3 guides the cloth 8 to enter the box body 1. When the cloth 8 passes around the upper cloth roller 32 and the lower cloth roller 33, it can fully contact the washing water or the washing water sprayed by the spraying assembly 2, prolong the cleaning time and improve the cleaning effect. Finally, the cloth 8 is guided out through the outgoing cloth roller 34 to complete the entire cleaning process. The spraying assembly 2 is arranged above the upper cloth roller 32.

[0031] The driving assembly 4 comprises a driving piece 41 which is in transmission connection with the upper cloth roller 32 and / or the lower cloth roller 33, and provides power for the movement of the cloth 8, and the driving piece 41 can drive the upper cloth roller 32 and / or the lower cloth roller 33 to rotate, so as to drive the cloth 8 to move in the box 1. By driving the upper cloth roller 32 and / or the lower cloth roller 33 to rotate, the cloth 8 is driven to move stably in the box 1 according to a preset path, so that the cloth 8 can orderly pass through each cleaning position, and the continuity and uniformity of the cleaning process are ensured.

[0032] The heat exchange assembly 5 comprises a heat exchange plate 51 which is in parallel connection with the bottom plate 11 of the box 1, and a heat exchange channel 52 is formed between the heat exchange plate 51 and the bottom plate 11 to provide a flow space for a heat exchange medium. The external heat exchange medium can enter the heat exchange channel 52 to heat the liquid at the bottom of the box 1. After the external heat exchange medium enters the heat exchange channel 52, the heat can be transmitted to the liquid at the bottom of the box 1 by the heat conduction characteristics of the bottom plate 11, so as to indirectly heat the washing water. This heating mode does not directly connect the external medium with the inside of the box 1, avoids the problem that impurities enter due to the direct passage of steam in the prior art, ensures the cleanliness of the washing water, and further ensures the stable washing effect of the cloth 8, so that the color and hand feeling of the cloth 8 are not affected by pollution. At the same time, since the steam does not directly enter the box 1, the humidity in the box 1 is only determined by the evaporation of the washing water itself, and will not abnormally increase, the contact between the metal parts such as the cloth guide roller assembly 3 and the driving assembly 4 and the water vapor is reduced, the rust probability is reduced, the service life of the parts is prolonged, and the frequency and cost of equipment maintenance are reduced.

[0033] The beneficial effects of the embodiment of the application are as follows:

[0034] The water washing equipment of the embodiment of the present application is provided with a heat exchange assembly 5 arranged at the bottom of the box body 1, which comprises heat exchange plates 51. The bottom of the box body 1 is provided with a bottom plate 11, and the heat exchange plates 51 and the bottom plate 11 form a closed heat exchange channel 52. By allowing the external heat exchange medium to enter the heat exchange channel 52, the heat conduction characteristics of the heat exchange plates 51 are used to heat the liquid at the bottom of the box body 1, so that indirect heating of the washing water can be achieved. Compared with the conventional heating method of directly introducing steam, the indirect heating method fundamentally cuts off the direct communication path between the external medium and the internal space of the box body 1, thereby avoiding the case that the steam is directly introduced into the box body 1. Since the external steam does not directly enter the box body 1, various impurities that may be contained in the steam cannot enter the washing water in the box body 1, thereby ensuring that the cleanliness of the washing water is not polluted by the outside, and further ensuring the washing effect of the cloth 8, so that the color and feel of the cleaned cloth 8 remain stable. At the same time, since the steam does not directly enter the inside of the box body 1, the humidity change in the box body 1 is only related to the evaporation of the washing water itself, and will not abnormally increase due to the continuous introduction of external steam. The contact strength between the metal parts such as the guide roller assembly 3 and the driving assembly 4 and the water vapor can be reduced, the probability of rusting can be reduced, the service life of the internal parts can be prolonged, and the maintenance frequency and cost of the equipment can be reduced.

[0035] Referring to Figure 4 and Figure 5The heat exchange plate 51 is provided with a plurality of welding points 511, which are uniformly distributed along the heat exchange channel 52. The stability and uniformity of the connection between the heat exchange plate 51 and the bottom plate 11 can be enhanced, avoiding deformation or leakage of the heat exchange channel 52 due to local connection instability. At the same time, the stress on the heat exchange plate 51 is more balanced when affected by the pressure and temperature changes of the heat exchange medium, reducing damage caused by stress concentration and ensuring the sealing of the heat exchange channel 52, ensuring stable circulation of the heat exchange medium in the preset path and maintaining the stability of the heat exchange efficiency. The heat exchange plate 51 is provided with an outer welding line 512 around the heat exchange plate 51, which surrounds the heat exchange area 53, and the heat exchange channel 52 is arranged in the heat exchange area 53, which limits the heat exchange channel 52 in the heat exchange area 53, further strengthening the sealing effect between the heat exchange plate 51 and the bottom plate 11, effectively preventing the heat exchange medium from leaking from the edge of the heat exchange channel 52, preventing heat loss, improving heat utilization efficiency, and the closed welding structure forms an independent space for the heat exchange area 53, which is completely isolated from the external environment, avoiding contact between the heat exchange medium and other components inside the cabinet 1, and ensuring stable operation of the equipment. The welding points 511 and the outer welding line 512 are welded on the bottom plate 11, which has the characteristics of high connection strength and good sealing, can withstand the pressure generated by the heat exchange medium during flow and the thermal expansion and contraction stress caused by temperature changes during heating, and ensures long-term stable operation of the heat exchange assembly 5, providing structural support for reliable implementation of the indirect heating method.

[0036] Referring to Figure 5 The heat exchange plate 51 is also provided with an inner welding line 513, one side of the heat exchange area 53 is a first side 531, and the opposite side of the heat exchange area 53 is a second side 532. One end of the inner welding line 513 is connected to the first side 531, and the other end of the inner welding line 513 extends towards the direction of the second side 532 and does not contact the second side 532. The inner welding line 513 can effectively guide the flow of the heat exchange medium in the heat exchange channel 52, promote the flow of the heat exchange medium along the set trajectory, extend the flow path in the heat exchange channel 52, and thus increase the heat exchange time and improve the heat exchange efficiency. At the same time, the structure of the inner welding line 513 with one end closed and the other end open can provide structural guarantee for the reversing flow of the heat exchange medium.

[0037] The number of the inner welding lines 513 is multiple, and the multiple inner welding lines 513 are parallel to each other. One end of one of the inner welding lines 513 is connected to the first side 531, and the other end is not in contact with the second side 532. One end of an adjacent inner welding line 513 is connected to the second side 532, and the other end is not in contact with the first side 531. The alternating connection mode forms a path for the heat exchange channel 52 to flow back, further prolongs the flow path, allows the heat exchange medium to fully contact the heat exchange plate 51, and improves the heat exchange sufficiency. At the same time, the multiple parallel inner welding lines 513 can enhance the structural strength of the heat exchange plate 51, reduce the deformation of the heat exchange plate 51 caused by temperature change and pressure during the heat exchange process, ensure the stability of the heat exchange channel 52, and more efficiently heat the liquid at the bottom of the box 1 compared to the short flow path of the heat exchange medium and the insufficient heat exchange in the prior art.

[0038] The heat exchange path 54 is formed between two adjacent inner welding lines 513, and the multiple inner welding lines 513 surround multiple heat exchange paths 54, so that the heat exchange medium can flow in multiple heat exchange paths 54, avoid local uneven heat exchange, and ensure the uniformity of heat transfer. Adjacent heat exchange paths 54 are connected on the side of the inner welding line 513 and the heat exchange area 53 that is not in contact. This connection mode allows multiple heat exchange paths 54 to be connected to each other to form a complete flow loop, so that the heat exchange medium can flow through each path in turn, further prolonging the residence time in the heat exchange channel 52 and improving the sufficiency of heat exchange. The position of the heat exchange channel 52 corresponds to the position of the heat exchange path 54, ensuring that the flow range of the heat exchange medium matches the area that needs to be heated accurately, reducing heat loss, and improving heat utilization efficiency.

[0039] Referring to Figure 6 The box 1 also has a plurality of partitions 12, and the positions of the plurality of partitions 12 correspond to the positions of the inner welding lines 513. The partitions 12 are vertically connected to the positions in the bottom plate 11 corresponding to the inner welding lines 513. In this way, flow grooves 13 are formed between adjacent partitions 12, and the liquid flows in the flow grooves 13. The flow path formed by the flow grooves 13 corresponds to the heat exchange path 54, so that the heated liquid can flow along the heat exchange path 54 in an orderly manner, and the heat exchange medium flows along the heat exchange path 54. Therefore, the heat exchange medium can be located in the same heat exchange area 53 as the liquid, improving the heat exchange effect.

[0040] The lower cloth roller 33 is arranged in the flow tank 13. When the cloth 8 rotates with the lower cloth roller 33, repeated washing can be obtained in the flow tank 13, the contact time of the cloth 8 with the washing liquid is prolonged, and the impurities on the cloth 8 can be more fully removed by means of the orderly flowing liquid in the flow tank 13, thereby further improving the washing quality of the cloth 8.

[0041] The heat exchange plate 51 is provided with a communication inlet 514 and a communication outlet 515. The communication inlet 514 is arranged at the end of the heat exchange path 54 on one side of the heat exchange plate 51, so as to facilitate the entry of external heat exchange medium into the corresponding heat exchange path 54 and ensure smooth flow of the heat exchange medium. The communication outlet 515 is arranged at the end of the heat exchange path 54 on the other side of the heat exchange plate 51, so that the medium completing heat exchange can be discharged in time, forming a complete medium circulation, ensuring continuous and stable heat exchange process, and improving heat exchange efficiency.

[0042] The bottom plate 11 is arranged obliquely. One side of the box body 1 is provided with a water inlet flange 14, and the other side is provided with a water outlet flange 15. The bottom plate 11 is inclined from the water inlet flange 14 to one side of the water outlet flange 15. By means of the inclination angle, the liquid can be guided to flow to the water outlet flange 15 under the action of gravity, the liquid renewal speed is accelerated, and the deposition of impurities in the box body 1 is avoided. The inclination direction of the bottom plate 11 is perpendicular to the extension direction of the inner welding line 513, so that the overall flow direction of the liquid intersects with the heat exchange path 54 of the heat exchange medium, each part of the liquid can fully contact heat, the heat exchange time is prolonged, the heating uniformity is ensured, and the overall washing effect is improved.

[0043] Referring to Figure 1 and Figure 6 , the cloth guide roller assembly 3 further comprises a cloth pressing roller 35 and a cloth pressing pipe 36. The cloth pressing roller 35 is arranged between the upper cloth roller 32 and the lower cloth roller 33, and the cloth pressing pipe 36 is arranged between the cloth pressing roller 35 and the lower cloth roller 33. The cloth pressing pipe 36 can play a transition and preliminary pressing role for the cloth 8 transmitted from the upper cloth roller 32, so as to ensure that the cloth 8 is stably transmitted downward to the lower cloth roller 33. The number of the cloth pressing pipes 36 is multiple, and each cloth pressing pipe 36 is arranged above the flow tank 13.

[0044] Cloth 8 enters the box 1 through the cloth feeding roller 31, and after passing around the upper cloth roller 32, abuts against the side of the cloth pressing roller 35 and is wound downward on the lower cloth roller 33. The vertically laid cloth 8 naturally adheres to the washing liquid under the action of gravity and the cloth pressing roller 35, facilitating the flow of sundries and enhancing the cleaning effect. The axis of the cloth pressing tube 36 is an outward convex curve, and the outward convex surface of the cloth pressing tube 36 abuts against the side of the cloth 8, which can better adapt to the bending shape of the cloth 8, increase the contact area with the cloth 8, improve the pressing stability, and at the same time avoid excessive extrusion damage to the cloth 8, so that the cloth 8 always maintains a good stretching state during the conveying process, ensuring uniform and sufficient washing in the flow tank 13.

[0045] Referring to Figure 7 , the washing equipment further comprises a top cover assembly 6, the top cover assembly 6 comprises a flap 61, one end of the valve rod is hingedly connected to the top of the box 1, providing support and a rotation axis for the turning of the flap 61, facilitating the opening or closing of the flap 61 by the operator. The top of the box 1 is provided with an opening 16, and the flap 61 can cover the opening 16. When opened, it is convenient for the operator to perform maintenance, cloth 8 threading and other operations in the box 1. When closed, it can block external impurities from entering. The edge of the opening 16 is provided with a water collecting groove 17, and the edge of the flap 61 is provided with a top plate 611. The top plate 611 is vertically arranged. When the flap 61 covers the opening 16, the bottom of the top plate 611 can be inserted into the water collecting groove 17. In this way, after the water vapor condensed on the flap 61, the water droplets can flow along the flap 61 to the top plate 611, and then to the water collecting groove 17, preventing the water droplets from leaking to other parts.

[0046] Referring to Figure 2 , the washing equipment further comprises a window assembly 7, the window assembly 7 comprises a sash 71 and an illuminating member 72, the sash 71 is hingedly connected to the box 1, and can be flexibly opened or closed, facilitating observation or operation of the inside of the box 1 when necessary. The box 1 is provided with a window opening, and the sash 71 can cover the window opening. When closed, it can protect the internal environment of the box 1. When opened, it provides a passage for observation. The illuminating member 72 is arranged on the sash 71, which can provide illumination for the inside of the box 1. Even in a relatively dark environment, the operator can clearly observe the washing state of the cloth 8, the equipment operation, etc., facilitating timely discovery of problems and adjustment, improving the convenience and accuracy of operation.

[0047] The above is the preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which are also considered within the scope of protection of the present application.

Claims

1. A water washing apparatus, characterized by, The box body, the spray assembly and the cloth guide roller assembly arranged in the box body, the driving assembly in transmission connection with the cloth guide roller assembly, and the heat exchange assembly arranged at the bottom of the box body, the cloth guide roller assembly includes an incoming cloth roller, an upper cloth roller, a lower cloth roller and an outgoing cloth roller, the cloth is wound around the incoming cloth roller to enter the box body and then passes around the upper cloth roller and the lower cloth roller and finally is wound around the outgoing cloth roller, and the spray assembly is arranged above the upper cloth roller; The driving assembly includes a driving member in transmission connection with the upper cloth roller and / or the lower cloth roller, and the driving member can drive the upper cloth roller and / or the lower cloth roller to rotate to drive the cloth to move in the box body. The heat exchange assembly includes a heat exchange plate, the bottom of the box body is provided with a bottom plate, the heat exchange plate is connected with the bottom plate in parallel, and a heat exchange channel is formed between the heat exchange plate and the bottom plate, and an external heat exchange medium can enter the heat exchange channel to heat the liquid at the bottom of the box body.

2. The washing apparatus according to claim 1, wherein A plurality of welding points are arranged on the heat exchange plate and are uniformly distributed along the heat exchange channel, an outer welding line is arranged around the heat exchange plate, the heat exchange region is surrounded by the outer welding line, the heat exchange channel is arranged in the heat exchange region, and the welding points and the outer welding line are welded on the bottom plate.

3. The water washing apparatus according to claim 2, characterized by An inner welding line is further arranged on the heat exchange plate, one side of the heat exchange region is a first side, the opposite side of the heat exchange region is a second side, one end of the inner welding line is connected with the first side, and the other end of the inner welding line extends toward the direction of the second side and does not contact the second side. The number of the inner welding lines is multiple, the multiple inner welding lines are parallel to each other, one end of one of the inner welding lines is connected with the first side and the other end does not contact the second side, one end of an adjacent inner welding line is connected with the second side and the other end does not contact the first side.

4. The water washing apparatus according to claim 3, characterized by A heat exchange path is formed between the adjacent two inner welding lines, the multiple inner welding lines surround multiple heat exchange paths, adjacent heat exchange paths are connected at the side where the inner welding lines do not contact the heat exchange region, and the position of the heat exchange channel corresponds to the position of the heat exchange path.

5. The water washing apparatus according to claim 4, wherein A plurality of baffles are further arranged in the box body, the positions of the baffles correspond to the positions of the inner welding lines, and the baffles are vertically connected to the positions of the bottom plate corresponding to the inner welding lines. Flow grooves are formed between the adjacent baffles, and the liquid flows in the flow grooves, and the flow path formed by the flow grooves corresponds to the heat exchange path. The lower cloth roller is arranged in the flow groove.

6. The water washing apparatus according to claim 4, wherein The heat exchange plate is provided with a communication inlet and a communication outlet, the communication inlet is arranged at the end of the heat exchange path on one side of the heat exchange plate, and the communication outlet is arranged at the end of the heat exchange path on the other side of the heat exchange plate.

7. The apparatus of claim 3, wherein The bottom plate is arranged obliquely, one side of the box body is provided with a water inlet flange, the other side is provided with a water outlet flange, the bottom plate is inclined from the side of the water inlet flange to the side of the water outlet flange, and the inclination direction of the bottom plate is perpendicular to the extension direction of the inner welding line.

8. The apparatus of claim 5, wherein, The cloth guiding roller assembly further comprises a pressing roller and a plurality of pressing pipes, the pressing roller is arranged between the upper cloth roller and the lower cloth roller, the pressing pipes are arranged between the pressing roller and the lower cloth roller, and the axes of the pressing pipes are outwardly convex curves. The cloth enters the box through the cloth feeding roller, passes around the upper cloth roller, abuts against the side of the pressing roller, and is wound around the lower cloth roller, the axes of the pressing pipes are outwardly convex curves, and the outwardly convex surfaces of the pressing pipes abut against the side of the cloth.

9. The apparatus of claim 1, wherein, The washing device further comprises a top cover assembly, the top cover assembly comprises a flip cover, one end of the valve rod is hingedly connected to the top of the box, the top of the box is provided with an opening, the flip cover can cover the opening, the edge of the opening is provided with a water receiving groove, the edge of the flip cover is provided with a top plate, the top plate is vertically arranged, and the bottom of the top plate can be inserted into the water receiving groove after the flip cover covers the opening.

10. The apparatus of claim 1, wherein, The washing device further comprises a window assembly, the window assembly comprises a window sash and a lighting member, the window sash is hingedly connected to the box, the box is provided with a window opening, the window sash can cover the window opening, and the lighting member is arranged on the window sash.

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