Double-roller mechanism, cleaning equipment and operation method

Abstract

The invention relates to the technical field of cleaning equipment, in particular to a double-roller mechanism, cleaning equipment and an operation method.The double-roller mechanism comprises a box unit, the box unit is composed of a main frame and a bottom plate, the main frame is a rectangular frame, movable wallboards are arranged on the two sides of the short edge, and fixed wallboards are arranged on the two sides of the long edge; a heat exchange plate upper guide rail and a heat exchange plate lower guide rail are arranged on the top surface and the bottom surface of the main frame; the moving mechanism comprises a main mounting platform and a movable platform which is located on the top surface of the main frame and further extends into the main frame, the movable platform is connected with the main mounting platform through a stand column, the moving mechanism is movably fixed to the main frame, and a transmission mechanism and a flushing unit are further fixed to the moving mechanism; a roller brush unit is fixed to the transmission mechanism. The problems that in the prior art, due to the fact that chemical cleaning or high-pressure water washing and manual brush rinsing are adopted for the plate type radiator, the cleaning effect is poor, the cleaning efficiency is low, and heat exchange plates are possibly damaged during cleaning are solved.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning equipment, and in particular to a pair of rollers, a cleaning equipment and an operating method. Background Art

[0002] Plate heat exchanger is a representative type of heat exchanger. It is a new type of high-efficiency heat exchanger composed of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between the plates, and heat is exchanged through the plates. Plate heat exchangers have the characteristics of high heat exchange efficiency, small heat loss, compact and lightweight structure, small footprint, easy installation and cleaning, wide application, and long service life. Plate heat exchangers are widely used in various fields. In the field of chemical synthesis, plate heat exchangers are often used in polyester devices to cool the water produced by esterification reactions, ethylene glycol (EG) collected and reused by the device, and pelletizer cooling water. It is worth mentioning that these cooled media contain granular or flocculent organic matter.

[0003] These organic substances are easy to adhere to and adsorb on the surface of the heat exchange plate. The bicarbonates such as calcium and magnesium contained in the circulating water on the other side of the heat exchange plate will generate precipitates when heated and adsorb on the surface of the heat exchange plate to form scale. Therefore, after long-term use, the plate heat exchanger will have problems such as scaling and clogging, resulting in an increase in the pressure difference flowing through the heat exchanger, a decrease in flow rate, and a decrease in heat exchange efficiency.

[0004] Therefore, the plate heat exchanger needs to be cleaned regularly. In the prior art, there are usually two methods for cleaning the heat exchange plates. One is chemical cleaning. This method has a fast cleaning speed, but this method cannot intuitively judge the cleaning effect. If chemical reagents remain and enter the production materials, it will affect the product quality and cause great economic losses. The other is high-pressure water gun flushing plus manual cleaning. First, the heat exchange plate of the plate heat exchanger is removed, and high-pressure water flushing + manual brush rinsing is used. This cleaning method is less efficient and has a poor cleaning effect on organic scale. Excessive flushing water pressure has a negative effect of erosion on the heat exchange plates, especially for large-size plates. It is more difficult to clean. Summary of the invention

[0005] The present invention provides a roller mechanism and a cleaning device and an operating method, which solve the problems in the prior art of using chemical cleaning or high-pressure water flushing plus manual brush rinsing of plate heat exchangers, resulting in poor cleaning effect, low cleaning efficiency and possible damage to heat exchange plates.

[0006] In order to solve the above-mentioned prior art problems, the present invention aims to provide a roller mechanism and cleaning equipment and operating method that can safely, efficiently and quickly complete the cleaning of heat exchange plates and plate filters compared to the prior art devices.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A pair of roller mechanisms comprises a plurality of roller brush units arranged relatively to each other, wherein the roller brush units comprise roller brushes, which are cylindrical structures, are hollow in the middle and are penetrated by a core shaft, one end of the core shaft is provided with a retaining spring groove, the other end of the core shaft is provided with an external thread, a retaining spring is retained in the retaining spring groove, and the external thread of the core shaft is matched and connected with a fastening nut.

[0008] Preferably, the roller brush unit is arranged on a moving mechanism, and a heat exchange plate is provided between the relatively arranged roller brush units. A double-row driven sprocket is provided at the end of the roller brush unit on one side, and a single-row driven sprocket is provided at the end of the roller brush unit on the other side. A synchronous chain meshing transmission is adopted between the sprocket on one side of the double-row driven sprocket and the single-row driven sprocket.

[0009] Preferably, an upper bearing assembly 2 and a lower bearing assembly 2 are provided at both ends of the roller brush unit with a single-row driven sprocket, and an upper bearing assembly 1 and a lower bearing assembly 1 are provided at both ends of the roller brush unit with a double-row driven sprocket. The upper bearing assembly 1 and the lower bearing assembly 1 as well as the upper bearing assembly 2 and the lower bearing assembly 2 on the same side are connected to the roller brush unit by a rigid coupling.

[0010] A cleaning device includes a box unit, which is composed of a main frame and a bottom plate. The main frame is a rectangular frame, and movable wall panels are provided on both sides of the short sides, and fixed wall panels are provided on both sides of the long sides. The top and bottom surfaces of the main frame are provided with upper guide rails for heat exchange plates and lower guide rails for heat exchange plates; a moving mechanism includes a main installation platform, which is located on the top surface of the main frame, and the moving mechanism also extends into the inside of the main frame to be provided with a movable platform, the movable platform and the main installation platform are connected by columns, the moving mechanism is movably fixed on the main frame, a transmission mechanism and a flushing unit are also fixed on the moving mechanism, and a roller brush unit is fixed on the transmission mechanism.

[0011] Preferably, the bottom plate is located on the bottom surface of the main frame, and the bottom plate is movably connected to the main frame. The bottom plate can be moved up and down perpendicular to the bottom surface. There is a gap between the movable wall panels on the same side, which accommodates heat exchange plates. The heat exchange plates correspond to the upper guide rails and the lower guide rails of the heat exchange plates. Movable cross beams are also provided at both ends of the lower guide rails of the heat exchange plates. The movable cross beams are screwed to the lower guide rails of the heat exchange plates, and the movable cross beams can be moved up and down perpendicular to the ground.

[0012] Preferably, movable guide rails of equal length are provided on the outer sides of the two long sides of the top surface of the main frame, and a movable chain is fixed on one side of the long side of the main frame, and travel switches are fixed at both ends of the movable chain extending to the two end ends of the main frame. The main installation platform is a rectangular plate structure, and movable rollers are extended outward on both sides of the short sides of the main installation platform, and the movable rollers match the movable guide rails, and the main installation platform is slidably fixed on the movable guide rails.

[0013] Preferably, the moving mechanism also includes a motor mounting platform, which is located on one side of the moving chain, and the movable platform is located on the side of the main frame close to the bottom plate, and the movable platform and the main mounting platform are connected and fixed by four columns, and the movable platform and the rectangular mounting platform are provided with roller brush unit mounting holes corresponding to each other, and the roller brush unit is fixed in the roller brush unit mounting holes.

[0014] Preferably, the flushing unit includes a flushing pipe, which includes a horizontal flushing pipe and a vertical flushing pipe. The horizontal flushing pipe is located on the upper part of the main installation platform, and the end of the horizontal flushing pipe is provided with a hydraulic joint male joint. The vertical flushing pipe is respectively located on both sides of the upper guide rail of the heat exchange plate and the lower guide rail of the heat exchange plate, and a number of fan-shaped nozzle assemblies are evenly distributed on each vertical flushing pipe.

[0015] An operating method applied to the above-mentioned cleaning device comprises the following steps: S1 is in standby mode, the mobile mechanism is placed at one end of the mobile rail; S2. Open the two movable wall panels on either side of the short beam of the box unit, and adjust the distance between the lower guide rail of the heat exchange plate and the upper guide rail of the heat exchange plate according to the specifications of the heat exchange plate to be cleaned; S3. Push the heat exchange plate to be cleaned from one end of the box unit along the guide groove of the upper guide rail of the heat exchange plate and the lower guide rail of the heat exchange plate into the box unit; S4. According to the cleaning requirements, select a suitable cleaning agent, generally alkaline solution or warm water, connect the male joint of the hydraulic joint, open the valve, and perform chemical or water washing on the heat exchange plates in front and behind the roller brush; the cleaning agent flowing to the bottom plate is discharged from the box unit through the drain pipe, and the cleaning agent can be recycled after being collected and filtered; S5. Start the reduction motor, the upper row sprocket of the double row drive sprockets of the reduction motor drives the roller brush unit to rotate in the circumferential direction through the drive chain, and the roller brush scrubs both sides of the heat exchange plate to remove the dirt adhered to the surface of the heat exchange plate; S6. The incomplete sprocket in the double-row drive sprocket assembled by the reduction motor meshes with the moving chain, driving the transmission mechanism, the flushing unit and the roller brush unit and the moving mechanism to move horizontally together; S7. When the moving mechanism moves to the end of the moving guide rail, it contacts the travel switch, and the reduction motor works in reverse to move the moving mechanism to the other end of the moving guide rail; the roller brushes on both sides of the heat exchange plate always rotate in the same direction and at the same speed, and the resultant force on the heat exchange plate is always 0; S8. Observe the cleaning effect of the heat exchange plate through the movable wall panel. When the cleaning requirements are met, there is no need to stop the machine. Push another heat exchange plate to be cleaned into the box unit along the grooves of the upper guide rail of the heat exchange plate and the lower guide rail of the heat exchange plate, and push the cleaned heat exchange plate out from the other side of the box unit.

[0016] Preferably, after completing step S4, the travel switch is adjusted to a suitable position according to the specifications of the heat exchange plate, so as to ensure full coverage of the heat exchange plate without wasting excess travel; according to the dirt condition of the heat exchange plate to be cleaned, the spacing between the roller brushes is adjusted, and the friction of the roller brush on the heat exchange plate to be cleaned is adjusted to improve the cleaning effect; according to the dirt condition of the heat exchange plate to be cleaned, the material of the roller brush can be changed, the bristles of the roller brush are usually made of nylon, and stubborn dirt can be replaced with a copper wire brush; after completing step S8, the cleaning time of the heat exchange plate to be cleaned can be set according to the cleaning time of the cleaned heat exchange plate, thereby realizing automatic cleaning.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a roller mechanism and cleaning equipment, which bring remarkable beneficial effects through its unique design and innovative mechanism. First, the equipment significantly improves the cleaning efficiency and can complete the cleaning of a large number of heat exchange plates and plate filters in a short time, greatly shortening the production cycle and improving production efficiency. Secondly, the equipment adopts advanced cleaning technology, which can thoroughly remove dirt and impurities on the surface of the plates and filters, ensuring the cleaning quality and extending the service life of the equipment. In addition, the equipment also has the advantages of simple operation, high degree of automation, stable operation, etc., which reduces the need for manual operation, reduces labor intensity, and also improves work safety.

[0018] The present invention combines a method for operating a cleaning device with the chemical cleaning method in the prior art and the mechanical cleaning method. The cleaning device has high cleaning efficiency, good cleaning effect, no cleaning agent residue, and no influence on product quality. The device of the present invention is easy to adjust and can clean heat exchange plates of different specifications. For large-sized heat exchange plates, segmented cleaning can be achieved. The heat exchange plates can be replaced without stopping. The operation is convenient and continuous cleaning can be achieved. The roller brush has a low rotation speed (≯120 rpm) and does not damage the heat exchange plates. Warm water or cleaning agent (temperature 60-80°C) can be used without splashing of the cleaning agent, and the cleaning is safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a top view schematic diagram of a roller mechanism according to an embodiment of the present invention.

[0020] Figure 2 It is a front view schematic diagram of the transmission mechanism structure of an embodiment of the present invention.

[0021] Figure 3 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0022] Figure 4 It is a schematic front view of a cabinet unit structure according to an embodiment of the present invention.

[0023] Figure 5 It is a schematic top view of a cabinet unit structure according to an embodiment of the present invention.

[0024] Figure 6 for Figure 3 AA cross-sectional view.

[0025] Figure 7 It is a schematic side view of a cabinet unit structure according to an embodiment of the present invention.

[0026] Figure 8 It is a schematic front view of the moving mechanism structure of an embodiment of the present invention.

[0027] Fig. 9 The figure is a schematic diagram of the structure of a flushing unit according to an embodiment of the present invention.

[0028] Fig.10 The figure is a schematic diagram of the structure of a roller brush unit according to an embodiment of the present invention.

[0029] Fig.11 The figure is a circuit control schematic diagram of the overall structure of an embodiment of the present invention.

[0030] Fig.12 for Fig.11 The control flow block diagram shown.

[0031] In the figure: heat exchange plate 1, box unit 2, main frame 2-1, bottom plate 2-2, fixed wall panel 2-3, movable wall panel 2-4, upper guide rail of heat exchange plate 2-5, lower guide rail of heat exchange plate 2-6, movable crossbeam 2-7, movable guide rail 2-8, movable chain 2-9, travel switch 2-10, drain pipe 2-11, moving mechanism 3, main installation platform 3-1, column 3-2, movable platform 3-3, motor installation platform 3-4, moving roller 3-5, transmission mechanism 4, reduction motor 4-1, double row drive Sprocket 4-2, double-row driven sprocket 4-3, single-row driven sprocket 4-4, driving chain 4-5, synchronous chain 4-6, upper bearing assembly one 4-7, upper bearing assembly two 4-8, lower bearing assembly one 4-9, lower bearing assembly two 4-10, rigid coupling 4-11, flushing unit 5, hydraulic joint male connector 5-1, horizontal flushing pipe 5-2, vertical flushing pipe 5-3, fan-shaped nozzle assembly 5-4, roller brush unit 6, roller brush 6-1, core shaft 6-2, retaining ring 6-3, fastening nut 6-4. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Plate heat exchanger is a representative type of heat exchanger. It is a new type of high-efficiency heat exchanger composed of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between the plates, and heat is exchanged through the plates. Plate heat exchangers have the characteristics of high heat exchange efficiency, small heat loss, compact and lightweight structure, small footprint, easy installation and cleaning, wide application, and long service life. Plate heat exchangers are widely used in various fields. In the field of chemical synthesis, plate heat exchangers are often used in polyester devices to cool the water produced by esterification reactions, ethylene glycol (EG) collected and reused by the device, and pelletizer cooling water. It is worth mentioning that these cooled media contain granular or flocculent organic matter.

[0034] These organic substances are easy to adhere to and adsorb on the surface of the heat exchange plate. The bicarbonates such as calcium and magnesium contained in the circulating water on the other side of the heat exchange plate will generate precipitates when heated and adsorb on the surface of the heat exchange plate to form scale. Therefore, after long-term use, the plate heat exchanger will have problems such as scaling and clogging, resulting in an increase in the pressure difference flowing through the heat exchanger, a decrease in flow rate, and a decrease in heat exchange efficiency.

[0035] Therefore, it is necessary to clean the plate heat exchanger regularly. In the prior art, there are usually two methods for cleaning the heat exchange plates. One is chemical cleaning. This method has a fast cleaning speed, but this method cannot intuitively judge the cleaning effect. If chemical reagents remain and enter the production materials, it will affect the product quality and cause great economic losses. The other is high-pressure water gun flushing plus manual cleaning. First, the heat exchange plate of the plate heat exchanger is removed, and high-pressure water flushing + manual brush rinsing is used. This cleaning method is less efficient and has a poor cleaning effect on organic scale. Excessive flushing water pressure has a negative effect of erosion on the heat exchange plate, especially for large-size plates. It is more difficult to clean. In order to solve the above problems, this embodiment is provided.

[0036] Reference Figure 1 and Figure 2 For this embodiment 1, Figure 1 Schematic diagram of top view of the roller mechanism of the present embodiment 1, Figure 2Schematic diagram of the front view of the transmission mechanism structure of the present embodiment 1, the present embodiment 1 is a roller mechanism, including a plurality of roller brush units 6 arranged relatively, the roller brush unit includes a roller brush 6-1, the roller brush is a cylindrical structure, the middle part is hollow and a core shaft 6-2 is passed through, the end of one end of the core shaft 6-2 is provided with a retaining spring groove, the end of the other end of the core shaft is provided with an external thread, a retaining spring 6-3 is provided in the retaining spring groove, the external thread provided on the core shaft is matched with a fastening nut 6-4, in the present embodiment, the roller brush unit 6 includes a roller brush 6-1, a core shaft 6-2, a retaining spring 6-3 and a fastening nut 6 -4, a retaining ring groove is provided at one end of the core shaft, and an external thread is provided at the other end of the core shaft, the core shaft passes through the hollow core of the roller brush, the retaining ring is clamped into the retaining ring groove of the core shaft, the fastening nut 6-4 is screwed into the threaded end of the core shaft 6-2, the retaining nut 6-4 fixes the roller brush firmly, the roller brush unit 6 is fixed between the upper bearing assembly 1 4-7 and the lower bearing assembly 1 4-9 and the upper bearing assembly 2 4-8 and the lower bearing assembly 2 4-10 through the rigid coupling 4-11, and the roller brush units 6 are respectively placed on both sides of the heat exchange plate 1.

[0037] Combined with Example 1, refer to Figures 3 to 10 And integrating Example 1 to obtain this Example 2, this Example 2 is a cleaning device, including a heat exchange plate box unit 2, a moving mechanism 3, a transmission mechanism 4, a flushing unit 5, and a roller brush unit 6, wherein the box unit 2 includes a main frame 2-1, a bottom plate 2-2, a fixed wall panel 2-3, a movable wall panel 2-4, a heat exchange plate upper guide rail 2-5, a heat exchange plate lower guide rail 2-6, a movable crossbeam 2-7, a movable guide rail 2-8, a movable chain 2-9, a travel switch 2-10 and a drain pipe 2-11, the main frame 2-1 is formed by welding stainless steel channel steel, the bottom of the main frame 2-1 is provided with the bottom plate 2-2, the bottom plate 2-2 is higher than the ground by ≥100mm, a drain pipe 2-11 is provided on the edge of the bottom plate 2-2, and the long beam side of the main frame 2-1 is installed with the A fixed wall panel 2-3 is provided with two movable wall panels 2-4 on each short beam side of the main frame 2-1, and the two movable wall panels 2-4 are located on both sides of the line connecting the upper guide rail 2-5 of the heat exchange plate and the lower guide rail 2-6 of the heat exchange plate. A certain gap is left between the two movable wall panels 2-4, and the heat exchange plate 1 can pass through the above gap to enter the upper guide rail 2-5 of the heat exchange plate and the lower guide rail 2-6 of the heat exchange plate. The fixed wall panel 2-3 and the movable wall panel 2-4 are both made of organic glass, which is convenient for observing the cleaning condition of the heat exchange plate 1. In addition, the bottom plate 2-2 is movably installed at the bottom of the main frame 2-1, and the bottom plate 2-2 can be moved up and down in a direction perpendicular to the bottom surface, so as to control the height of the bottom plate 2-2 from the ground to suit different usage occasions.

[0038] In this embodiment 1, the heat exchange plate upper guide rail 2-5 is provided on the bottom plate at the midpoint of the two short beams at the top of the main frame 2-1, and the heat exchange plate upper guide rail 2-5 is located inside the main frame 2-1. The heat exchange plate upper guide rail 2-5 is of the same length as the rectangular frame at the top of the main frame 2-1, and the heat exchange plate lower guide rail 2-6 of the same length is provided directly below the heat exchange plate upper guide rail 2-5. The horizontally placed movable crossbeam 2-7 is provided at both ends of the heat exchange plate lower guide rail 2-6. The heat exchange plate lower guide rail 2-6 is screwed to the movable crossbeam 2-7, and the movable crossbeam 2-7 is bolted to the main frame 2-1 column. The height of the movable crossbeam 2-7 from the ground is adjustable. The adjustability of the movable crossbeam 2-7 enables the equipment of this embodiment to flexibly adjust the distance between the heat exchange plate upper guide rail 2-5 and the heat exchange plate lower guide rail 2-6 according to the size of different heat exchange plates 1, so it has the characteristics of a wide range of applications.

[0039] The two movable guide rails 2-8 are arranged in parallel on the outside of the long beam at the top of the main frame 2-1, and the movable chain 2-9 is arranged horizontally on the long beam on one side of the top of the main frame. A certain safety distance is left between the movable chain 2-9 and the ends of both ends of the main frame 2-1, and the travel switches 2-10 are symmetrically arranged at both ends of the movable chain at the top of the main frame, and the travel switch 2-1 is located inside the movable chain 2-9.

[0040] The moving mechanism 3 includes a main mounting platform 3-1, a column 3-2, a movable platform 3-3, a motor mounting platform 3-4 and a moving roller 3-5. The main mounting platform 3-1 is horizontally arranged on the top of the main frame 2-1. The moving rollers 3-5 with legs are provided on the short sides at both ends of the main mounting platform 3-1. The moving rollers 3-5 are located in the grooves of the moving guide rails 2-8. The main mounting platform 3-1 is located at one end of the moving chain 2-9 and the motor mounting platform 3-4 is provided. The movable platform 3-3 is provided just below the main mounting platform 3-1. The movable platform 3-3 is located inside the main frame 2-1. The movable platform 3-3 is connected and fixed to the main mounting platform 3-1 by four columns. The movable platform 3-3 and the main mounting platform 3-1 are symmetrically provided with mounting holes for the roller brush unit 6.

[0041] The transmission mechanism 4 includes a reduction motor 4-1, a double-row driving sprocket 4-2, a double-row driven sprocket 4-3, a single-row driven sprocket 4-4, a driving chain 4-5, a synchronous chain 4-6, an upper bearing assembly 1 4-7, an upper bearing assembly 2 4-8, a lower bearing assembly 1 4-9, a lower bearing assembly 2 4-10 and a rigid coupling 4-11. The reduction motor 4-1 is installed on the motor mounting platform 3-4, and the double-row driving sprocket 4-2 is installed on the shaft of the reduction motor 4-1. The double-row driving sprocket 4- The upper row sprocket of 2 drives the roller brush unit 6 to scrub the heat exchange plate 1 through the driving chain 4-5, and the lower row sprocket of the double-row driving sprocket 4-2 is meshed with the moving chain 2-9 for transmission, driving the moving mechanism 3 to move back and forth horizontally. The lower row sprocket of the double-row driving sprocket 4-2 is an incomplete sprocket structure with only one tooth. When the reduction motor 4-1 rotates one circle, the moving mechanism 3 moves only one pitch of the moving chain, and the roller brush unit 6 stays at the same position for a sufficient time, thereby enhancing the scrubbing effect.

[0042] The upper bearing assembly 4-7 and the upper bearing assembly 2 4-8 are installed on the main installation platform 3-1, and the lower bearing assembly 4-9 and the lower bearing assembly 2 4-10 are installed on the movable platform 3-3. The lower bearing assembly 4-9 is coaxial with the upper bearing assembly 1 4-7, and the lower bearing assembly 2 4-10 is coaxial with the upper bearing assembly 2 4-8. The rotating shaft of the upper bearing assembly 1 4-7 is provided with the double-row driven sprocket 4-3, and the rotating shaft of the upper bearing assembly 2 4-8 is provided with the single-row driven sprocket 4-4. The double-row driven sprocket 4-3 has the same specifications as the single-row driven sprocket 4-4. The double-row driven sprocket 4-3 and the single-row driven sprocket 4-4 are driven by the meshing transmission of the synchronous chain 4-6. The other sprocket of the double-row driven sprocket 4-3 is meshed with the double-row driven sprocket The driving sprockets 4-2 are chain-engaged for transmission, the rigid coupling 4-11 is installed on the rotating shafts of the upper bearing assembly 1 4-7, the upper bearing assembly 2 4-8, the lower bearing assembly 1 4-9 and the lower bearing assembly 2 4-10, the roller brush unit 6 is connected as a whole with the upper bearing assembly and the lower bearing assembly through the rigid coupling 4-11, the double-row driven sprocket 4-3 and the single-row driven sprocket 4-4 drive the roller brush unit 6 to rotate circumferentially, the double-row driven sprocket 4-3 and the single-row driven sprocket 4-4 have the same speed and direction, the friction force exerted on the heat exchange plate 1 by the roller brush unit 6 is equal in magnitude and opposite in direction, and the resultant force exerted on the heat exchange plate 1 is 0; the speed of the roller brush unit 6 is limited to within 120 rpm, and the relatively low speed has little wear on the heat exchange plate. For the plates whose length exceeds the length of the upper guide rail 2-5 and the lower guide rail 2-6 of the heat exchange plate, segmented cleaning can be achieved.

[0043] The flushing unit 5 is fixed on the moving mechanism 3, and the flushing unit 5 reciprocates together with the moving mechanism 3. The flushing unit 5 includes a hydraulic joint male joint 5-1, a horizontal flushing pipe 5-2, a vertical flushing pipe 5-3 and a fan-shaped nozzle assembly 5-4. The flushing pipe is a 90° elbow. The hydraulic joint male joint 5-1 is installed on the horizontal flushing pipe 5-2. The flushing pipe is provided with 4 vertical flushing pipes 5-3, and the vertical flushing pipes 5-3 are respectively located on the guide rails 2 on the heat exchange plate. -5 and both sides of the lower guide rail 2-6 of the heat exchange plate, the two vertical flushing pipes 5-3 on the same side of the upper guide rail 2-5 of the heat exchange plate and the lower guide rail 2-6 of the heat exchange plate are respectively located on the front and rear sides of the roller brush unit 6, and each vertical flushing pipe 5-3 is evenly distributed with four fan-shaped nozzle assemblies 5-4, and the fan-shaped nozzle assembly 5-4 faces the contact surface between the roller brush and the heat exchange plate 1. The hydraulic joint male joint 5-1 is used to conveniently and quickly replace the flushing liquid, and the fan-shaped nozzle has a better flushing effect.

[0044] Combining the present embodiment 1 and the present embodiment 2, Figures 1 to 10 On the basis of the above, the main technical solutions such as shape, structure, position relationship, connection relationship in Example 1 and Example 2 are further refined and combined with Example 1 and Example 2 and verified according to actual installation to obtain this Example 3. This Example 3 is a roller mechanism and cleaning equipment, including a heat exchange plate 1, a box unit 2, a moving mechanism 3, a transmission mechanism 4, a flushing unit 5 and a roller brush unit 6. The moving mechanism 3 is fixed on the box unit 2, and the transmission mechanism 4, the flushing unit 5 and the roller brush unit 6 are arranged on the moving mechanism 3.

[0045] Specifically, the box unit 2 includes a main frame 2-1, a bottom plate 2-2, a wall panel 2-3, a movable wall panel 2-4, an upper guide rail 2-5 for a heat exchange plate, a lower guide rail 2-6 for a heat exchange plate, a movable crossbeam 2-7, a movable guide rail 2-8, a movable chain 2-9, a travel switch 2-10 and a drain pipe 2-11.

[0046] The main frame 2-1 is welded by stainless steel channel steel, the bottom plate 2-2 is welded with the bottom cross beam of the main frame 2-1 to form a whole, the height of the bottom plate 2-2 from the ground is 100mm, and a drain pipe 2-11 is arranged near the bottom cross beam of the bottom plate 2-2. The heat exchange plate upper guide rail 2-5 is welded on the bottom plate of the two short beams at the top of the main frame 2-1. The heat exchange plate upper guide rail 2-5 is located inside the main frame 2-1. The heat exchange plate upper guide rail 2-5 is parallel to the long beam of the main frame 2-1. Movable cross beams 2-7 are arranged on the short beam sides at both ends of the main frame 2-1. The movable cross beam 2-7 is connected to the main frame 2-1 column bolts. The height of the movable cross beam 2-7 from the ground is adjustable. The lower guide rail 2-6 of the plate is arranged on the inner side of the movable cross beam 2-7, and the lower guide rail 2-6 of the heat exchange plate is screwed to the movable cross beam 2-7. The lower guide rail 2-6 of the heat exchange plate is placed in parallel directly below the upper guide rail 2-5 of the heat exchange plate. The lower guide rail 2-6 of the heat exchange plate and the upper guide rail 2-5 of the heat exchange plate form a "concave" shape, and the heat exchange plate can move in the grooves of the lower guide rail 2-6 of the heat exchange plate and the upper guide rail 2-5 of the heat exchange plate.

[0047] A pair of parallel movable guide rails 2-8 are symmetrically fixed horizontally on both sides of the long beam at the top of the main frame 2-1. A movable chain 2-9 is arranged on the long beam on one side of the top of the main frame 2-1. The movable chain 2-9 is used to mesh with the incomplete sprocket in the double-row drive sprocket 4-2 assembled with the reduction motor 4-1. The movable chain 2-9 has a sufficient safety distance from the end of the main frame 2-1 to prevent the travel switch 2-10 from malfunctioning and the movable mechanism 3 from rushing out of the main frame 2-1. In this embodiment, the movable chain 2-9 is a single-row 04C transmission chain with a chain pitch of 6.35mm. The movable chain 2-9 can be replaced by a rack, and the horizontal movement of the movable mechanism 3 is achieved by meshing the rack with the transmission gear.

[0048] The travel switches 2-10 are symmetrically arranged on the inner sides of both ends of the moving chain 2-9 at the top of the main frame 2-1, and the distance between the travel switches 2-10 is less than the length of the moving chain 2-9. When the moving mechanism moves to the ends of the moving guide rail, the moving mechanism contacts the travel switch, so that the limit switch 2-10 controls the reversal of the moving mechanism 3 when it moves on the moving guide rail 2-8. The limit switches at both ends of the moving guide rail are connected to the reduction motor control.

[0049] The wall panel 2-3 is installed on the long beam side of the main frame 2-1, and two movable wall panels 2-4 are arranged on the short beam side of the main frame. The two movable wall panels 2-4 are located on both sides of the line connecting the upper guide rail 2-5 of the heat exchange plate and the lower guide rail 2-6 of the heat exchange plate. A certain gap is left between the two movable wall panels 2-4, and the heat exchange plate 1 can pass through the above gap. The wall panel 2-3 and the movable wall panel 2-4 are made of organic glass, which is convenient for observing the cleaning condition of the heat exchange plate 1 through the wall panel 2-3.

[0050] The mobile mechanism 3 includes a main installation platform 3-1, a column 3-2, a movable platform 3-3, a reduction motor installation platform 3-4 and a moving roller 3-5. The motor installation platform 3-4 is arranged at one end of the top of the main installation platform 3-1. The motor installation platform 3-4 is located on one side of the moving chain 2-9. The moving chain 2-9 runs through the motor installation platform 3-4. The movable platform 3-3 is located directly below the main mounting platform 3-1, and the mounting hole of the movable platform 3-3 is aligned with the mounting hole of the main mounting platform 3-1. The mounting holes of the movable platform 3-3 and the main mounting platform 3-1 are both oblong holes and are in the same direction. The movable platform 3-3 and the main mounting platform 3-1 are connected and fixed by the four columns 3-2. Two movable rollers 3-5 with legs are respectively installed at the two ends of the long sides of the main mounting platform 3-1, and the movable rollers 3-5 are located in the grooves of the movable guide rails 2-8. The movable mechanism 3 is supported above the movable guide rails 2-8 by the movable rollers 3-5. Under the control of the reduction motor 4-1, the movable mechanism 3 makes horizontal and reciprocating motions along the movable guide rails 2-8 on the top of the box unit 2.

[0051] The transmission mechanism 4 includes a reduction motor 4-1, a double-row driving sprocket 4-2, a double-row driven sprocket 4-3, a single-row driven sprocket 4-4, a driving chain 4-5, a synchronous chain 4-6, an upper bearing assembly 1 4-7, an upper bearing assembly 2 4-8, a lower bearing assembly 1 4-9, a lower bearing assembly 2 4-10 and a rigid coupling 4-11. The reduction motor 4-1 is installed on the reduction motor installation platform 3-4. In this embodiment, the output speed of the reduction motor 4-1 is 60 rpm. The double-row drive sprocket 4-2 is installed on the shaft of the reduction motor 4-1. The upper sprocket of the double-row drive sprocket 4-2 drives the roller brush unit 6 to brush the heat exchange plate 1 through the drive chain 4-5. The lower sprocket of the double-row drive sprocket 4-2 is meshed with the moving chain 2-9 for transmission, driving the moving mechanism 3 to move back and forth horizontally. In this embodiment, the double-row drive sprocket 4-2 is a 2-04C 20-tooth pseudo double-row sprocket. The lower sprocket of the double-row drive sprocket 4-2 is an incomplete sprocket structure with only 1 tooth. The incomplete sprocket can be replaced by an incomplete gear. The incomplete gear is meshed with the rack for transmission, driving the moving mechanism 3 to move back and forth horizontally. When the reduction motor 4-1 rotates one circle, the horizontal movement distance of the moving mechanism 3 is only one pitch of the moving chain 2-9, that is, the horizontal movement is 6.35 mm.

[0052] The upper bearing assembly 1 4-7 and the upper bearing assembly 2 4-8 are fixedly connected to the main installation platform 3-1, and the lower bearing assembly 1 4-9 and the lower bearing assembly 2 4-10 are installed on the movable platform 3-3. In this embodiment, the upper bearing assembly 1 4-7, the upper bearing assembly 2 4-8, the lower bearing assembly 1 4-9 and the lower bearing assembly 2 4-10 use FL200 type outer spherical ball bearings with diamond seat top thread (UCFL type). The lower bearing assembly 1 4-9 is coaxial with the upper bearing assembly 1 4-7, and the lower bearing assembly 2 4-10 is coaxial with the upper bearing assembly 2 4-8. The double-row driven sprocket 4-3 is installed on the rotating shaft of the upper bearing assembly 1 4-7, and the single-row driven sprocket 4-4 is installed on the rotating shaft of the upper bearing assembly 2 4-8. In this embodiment, the double-row driven sprocket 4-3 is a 2-point 04C 10-tooth pseudo double-row sprocket, and the single-row driven sprocket 4-4 is a 2-point 04C 10-tooth pseudo double-row sprocket. 10 single-row sprocket, the double-row driven sprocket 4-3 and the single-row driven sprocket 4-4 are meshed and driven by the synchronous chain 4-6, and the double-row driven sprocket 4-3 and the single-row driven sprocket 4-4 drive the roller brush unit 6 to rotate circumferentially, and the double-row driven sprocket 4-3 and the single-row driven sprocket 4-4 have the same rotation speed and the same direction. In this embodiment, the roller brush speed is 120 rpm, and the rigid coupling 4-11 is installed on the rotating shaft of the upper bearing assembly 1 4-7, the upper bearing assembly 2 4-8, the lower bearing assembly 1 4-9 and the lower bearing assembly 2 4-10, and the rigid coupling 4-11 is used to connect the roller brush unit 6 and transmit rotation.

[0053] The flushing unit 5 comprises a hydraulic joint male joint 5-1, a horizontal flushing pipe 5-2, a vertical flushing pipe 5-3 and a fan-shaped nozzle assembly 5-4. The flushing unit 5 is fixed on the moving mechanism 3. The flushing unit 5 reciprocates together with the moving mechanism 3. The hydraulic joint male joint 5-1 is installed on the horizontal flushing pipe 5-2. Four vertical flushing pipes 5-3 are welded at the lower part of the horizontal flushing pipe 5-2. The four vertical flushing pipes 5-3 are respectively located on the guide rails 2- 5 is on both sides of the line connecting the lower guide rail 2-6 of the heat exchange plate, and the two vertical flushing pipes 5-3 on the same side of the upper guide rail 2-5 of the heat exchange plate and the lower guide rail 2-6 of the heat exchange plate are respectively located on the front and rear sides of the roller brush unit 6, and each vertical flushing pipe 5-3 is evenly distributed with four fan-shaped nozzle assemblies 5-4 at equal intervals. In this embodiment, the fan-shaped nozzle assembly 5-4 adopts a universal fan-shaped nozzle, which can be arbitrarily adjusted to a 45-degree angle direction, and the fan-shaped nozzle assembly 5-4 faces the contact surface between the roller brush 6 and the heat exchange plate 1.

[0054] The roller brush unit 6 includes a roller brush 6-1, a core shaft 6-2, a retaining ring 6-3 and a fastening nut 6-4. A retaining ring groove is provided at one end of the core shaft 6-2, and an external thread is provided at the other end of the core shaft 6-2. The core shaft 6-2 passes through the hollow core of the roller brush 6-1, and the retaining ring 6-3 is inserted into the retaining ring groove of the core shaft 6-2. The fastening nut 6-4 is screwed into the threaded end of the core shaft 6-2. The fastening nut 6-4 firmly fixes the roller brush 6-1. The roller brush unit 6 is fixed between the upper bearing assembly 1 4-7 and the lower bearing assembly 1 4-9 and between the upper bearing assembly 2 4-8 and the lower bearing assembly 2 4-10 through the rigid coupling 4-11. The roller brush unit 6 is respectively placed on both sides of the heat exchange plate 1.

[0055] The bristles of the roller brush 6-1 are usually made of nylon, and can be replaced with a copper wire brush for stubborn dirt.

[0056] According to the contents described in Example 1, Example 2 and Example 3, the present invention further provides Example 4, which provides an operating method of a roller mechanism and a cleaning device applied to Example 2 and Example 3, including the following steps: S1. The equipment is initialized to standby mode. At this time, the moving mechanism is installed on the moving guide rail and is located at one end of the moving guide rail to ensure that it does not affect the placement of the heat exchange plate into the box unit.

[0057] S2. The operator opens the two movable wall panels on the side of the short beam on one side of the heat exchange plate storage box unit, and adjusts the distance between the lower guide rail of the heat exchange plate and the upper guide rail of the heat exchange plate according to the specifications of the heat exchange plate to be cleaned, so that the lower guide rail of the heat exchange plate and the upper guide rail of the heat exchange plate can stably fix the heat exchange plate for subsequent cleaning.

[0058] S3. Before cleaning the heat exchanger plates, the distance between the roller brushes needs to be adjusted according to the stubbornness of the dirt on the plates; for example, when the dirt is difficult to remove, the relative distance between the two roller brushes can be shortened, which can increase the friction of the roller brushes on the heat exchanger plates to be cleaned, thereby improving the cleaning efficiency. In order to deal with different stubbornness of dirt, it may be necessary to change the material of the roller brush. Normally, the bristles of the roller brush are made of durable nylon material, but when facing particularly stubborn dirt, it can be replaced with a copper wire brush with higher hardness.

[0059] S4. The heat exchanger plates to be cleaned will enter from one end of the box unit manually or mechanically, and will be pushed into the inside of the box unit along the guide groove formed by the upper and lower guide rails. This step requires careful operation to ensure that the heat exchanger plates are correctly placed in the cleaning position.

[0060] S5. According to the size of the heat exchange plate, the operator needs to adjust a device called a travel switch to the appropriate position. This step is very critical because it can ensure that every part of the heat exchange plate can be thoroughly cleaned during the cleaning process, while also avoiding unnecessary travel waste.

[0061] S6. According to the specific needs of cleaning, select the appropriate cleaning solution. Common cleaning solutions include alkaline liquid or warm water. Then, the operator needs to connect the male connector of the hydraulic joint, open the corresponding valve, and use the cleaning solution to chemically clean or rinse the heat exchange plates before and after the roller brush. The cleaning solution will flow along the surface of the heat exchange plate and eventually be discharged from the box unit through the drain pipe on the bottom plate. In order to save resources, the cleaning solution can be recycled by collecting and filtering.

[0062] S7. Start the reduction motor, which drives the roller brush unit to rotate in the circumferential direction through the upper sprocket of the double-row drive sprocket. The rotation of the roller brush unit acts on both sides of the heat exchange plate, effectively peeling off the stubborn dirt attached to the surface.

[0063] S8. The incomplete sprocket in the double-row driving sprocket assembled with the reduction motor is meshed with the moving chain and acts on the transmission mechanism together, so that the flushing unit, the roller brush unit and the moving mechanism move horizontally together.

[0064] S9. When the moving mechanism moves to the end of the moving guide rail and contacts the travel switch, it will contact the preset travel switch, and then the reduction motor will work in reverse, so that the moving mechanism moves to the other end of the guide rail. In this process, the roller brushes on both sides of the heat exchange plate will keep rotating in the same direction and at the same speed, ensuring that the resultant force on the heat exchange plate is always zero, avoiding damage to the plate due to uneven force.

[0065] S10. The operator can evaluate the cleaning progress by observing the cleaning effect of the heat exchange plate behind the movable wall panel. Once the cleaning reaches the predetermined requirement, another heat exchange plate to be cleaned can be pushed into the box unit along the same guide rail for cleaning without stopping the machine, and then the cleaned heat exchange plate is pushed out from the other side of the box unit.

[0066] S11. Finally, the cleaning time of the heat exchange plate to be cleaned can be preset according to the cleaning time of the cleaned heat exchange plate. In this way, the automatic cleaning of the heat exchange plate can be realized, the cleaning efficiency can be improved, and the labor cost can be reduced.

[0067] Reference Fig.11 and 12 For this embodiment 5, Fig.11 This is a circuit control schematic diagram of the overall structure of a cleaning device in Example 2 and Example 3, Fig.12 for Fig.11 Corresponding control flow chart, this embodiment 5 is a control method of a cleaning device in the above-mentioned embodiment 2 and embodiment 3, Fig.12 That is the complete control process of Examples 1 and 2.

[0068] When a cleaning device described in embodiments 2 and 3 needs to be stopped manually, the control process is: the selection switch SA1 is turned to the stop position - the entire control circuit loses power - the main contacts of KM1 (or KM2) are disconnected - the electric M stops.

[0069] When the time relay of a cleaning device described in Examples 2 and 3 automatically stops after the timing time is reached, the control process is: after the timing time is reached, the normally closed contact of KT is disconnected - the control circuit loses power - the main contact of KM1 (or KM2) is disconnected - the electric M stops rotating.

[0070] The above are only preferred embodiments of the present invention and do not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A roller mechanism, characterized in that: It comprises a plurality of roller brush units arranged relatively to each other, wherein the roller brush unit comprises a roller brush, which is a cylindrical structure with a hollow middle portion and a core shaft passing therethrough, a retaining ring groove being provided at one end of the core shaft, an external thread being provided at the other end of the core shaft, a retaining ring being retained in the retaining ring groove, and the external thread provided on the core shaft being matched and connected with a fastening nut.

2. The roller mechanism according to claim 1, characterized in that: The roller brush unit is arranged on the moving mechanism, and a heat exchange plate is provided between the roller brush units arranged relatively to each other. A double-row driven sprocket is provided at the end of one side of the roller brush unit, and a single-row driven sprocket is provided at the end of the other side of the roller brush unit. A synchronous chain meshing transmission is adopted between the sprocket on one side of the double-row driven sprocket and the single-row driven sprocket.

3. The roller mechanism according to claim 2, characterized in that: An upper bearing assembly 2 and a lower bearing assembly 2 are also provided at both ends of the roller brush unit with a single-row driven sprocket, and an upper bearing assembly 1 and a lower bearing assembly 1 are also provided at both ends of the roller brush unit with a double-row driven sprocket. The upper bearing assembly 1 and the lower bearing assembly 1 as well as the upper bearing assembly 2 and the lower bearing assembly 2 on the same side are connected to the roller brush unit by a rigid coupling.

4. A cleaning device, characterized in that: include: The box unit is composed of a main frame and a bottom plate. The main frame is a rectangular frame. Both sides of the short side are provided with movable wall panels, and both sides of the long side are provided with fixed wall panels. The top and bottom surfaces of the main frame are provided with upper guide rails for heat exchange plates and lower guide rails for heat exchange plates. The moving mechanism includes a main installation platform, which is located on the top surface of the main frame, and the moving mechanism is also provided with a movable platform extending into the interior of the main frame. The movable platform and the main installation platform are connected by columns. The moving mechanism is movably fixed on the main frame. A transmission mechanism and a flushing unit are also fixed on the moving mechanism, and a roller brush unit is fixed on the transmission mechanism.

5. The cleaning device according to claim 4, characterized in that The bottom plate is located on the bottom surface of the main frame, and the bottom plate is movably connected to the main frame. The bottom plate can be moved up and down perpendicular to the bottom surface for adjustment. There is a gap between the movable wall panels on the same side, which accommodates heat exchange plates. The heat exchange plates correspond to the upper guide rails and the lower guide rails of the heat exchange plates. Movable cross beams are also provided at both ends of the lower guide rails of the heat exchange plates. The movable cross beams are screwed to the lower guide rails of the heat exchange plates, and the movable cross beams can be movably adjusted up and down perpendicular to the ground.

6. The cleaning device according to claim 4, characterized in that: Equally long movable guide rails are provided on the outer sides of the two long sides of the top surface of the main frame, and a movable chain is fixed on one side of the long side of the main frame. Travel switches are fixed at both ends of the movable chain extending to the two end heads of the main frame. The main installation platform is a rectangular plate structure, and movable rollers are extended outward on both sides of the short sides of the main installation platform. The movable rollers match the movable guide rails, and the main installation platform is slidably fixed on the movable guide rails.

7. The cleaning device according to claim 4, characterized in that: The moving mechanism also includes a motor mounting platform, which is located on one side of the moving chain. The movable platform is located on one side of the main frame close to the bottom plate, and the movable platform and the main mounting platform are connected and fixed by four columns. The movable platform and the rectangular mounting platform are correspondingly provided with roller brush unit mounting holes, and the roller brush unit is fixed in the roller brush unit mounting holes.

8. The cleaning device according to claim 4, characterized in that: The flushing unit includes a flushing pipe, which includes a horizontal flushing pipe and a vertical flushing pipe. The horizontal flushing pipe is located on the upper part of the main installation platform, and the end of the horizontal flushing pipe is provided with a hydraulic joint male joint. The vertical flushing pipe is respectively located on both sides of the upper guide rail of the heat exchange plate and the lower guide rail of the heat exchange plate, and a plurality of fan-shaped nozzle assemblies are evenly distributed on each vertical flushing pipe.

9. A method for operating a cleaning device according to any one of claims 4 to 8, characterized in that: The following steps are involved: S1 is in standby mode, the mobile mechanism is placed at one end of the mobile rail; S2. Open the two movable wall panels on either side of the short beam of the box unit, and adjust the distance between the lower guide rail of the heat exchange plate and the upper guide rail of the heat exchange plate according to the specifications of the heat exchange plate to be cleaned; S3. Push the heat exchange plate to be cleaned from one end of the box unit along the guide groove of the upper guide rail of the heat exchange plate and the lower guide rail of the heat exchange plate into the box unit; S4. According to the cleaning requirements, select a suitable cleaning agent, generally alkaline solution or warm water, connect the male joint of the hydraulic joint, open the valve, and perform chemical or water washing on the heat exchange plates in front and behind the roller brush; the cleaning agent flowing to the bottom plate is discharged from the box unit through the drain pipe, and the cleaning agent can be recycled after being collected and filtered; S5. Start the reduction motor, the upper row sprocket of the double row drive sprockets of the reduction motor drives the roller brush unit to rotate in the circumferential direction through the drive chain, and the roller brush scrubs both sides of the heat exchange plate to remove the dirt adhered to the surface of the heat exchange plate; S6. The incomplete sprocket in the double-row drive sprocket assembled by the reduction motor meshes with the moving chain, driving the transmission mechanism, the flushing unit and the roller brush unit and the moving mechanism to move horizontally together; S7. When the moving mechanism moves to the end of the moving guide rail, it contacts the travel switch, and the reduction motor works in reverse to move the moving mechanism to the other end of the moving guide rail; the roller brushes on both sides of the heat exchange plate always rotate in the same direction and at the same speed, and the resultant force on the heat exchange plate is always 0; S8. Observe the cleaning effect of the heat exchange plate through the movable wall panel. When the cleaning requirements are met, there is no need to stop the machine. Push another heat exchange plate to be cleaned into the box unit along the grooves of the upper guide rail of the heat exchange plate and the lower guide rail of the heat exchange plate, and push the cleaned heat exchange plate out from the other side of the box unit.

10. The operating method according to claim 9, characterized in that: The following steps are involved: After completing step S4, the travel switch is adjusted to a suitable position according to the specifications of the heat exchange plate, and the spacing between the roller brushes is adjusted according to the dirt condition of the heat exchange plate to be cleaned, and the friction force of the roller brush on the heat exchange plate to be cleaned is adjusted to improve the cleaning effect; the material of the roller brush can be changed according to the dirt condition of the heat exchange plate to be cleaned; After completing step S8, the cleaning time of the heat exchange plates to be cleaned can be set according to the cleaning time of the cleaned heat exchange plates to achieve automatic cleaning.

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