Special cleaning device and cleaning line for stretch water heater inner tank

Abstract

A special cleaning device for the inner tank of a stretch water heater and a cleaning line thereof, wherein the device comprises a frame, a first outer wall spraying and brushing mechanism for cleaning the outer wall of the inner tank is provided on the upper part of the frame, and a first inner tank lifter for lifting the inner tank is provided on the lower part of the frame; the first outer wall spraying and brushing mechanism comprises a first outer wall spraying mechanism for spraying washing liquid to the outer wall of the inner tank and a first outer wall brushing mechanism for brushing the outer wall of the inner tank, the first outer wall brushing mechanism comprises a first outer wall driving motor and a first outer wall inverted U-shaped brush rack, a first outer wall brush is provided on the inner bottom surface of the first outer wall inverted U-shaped brush rack, and the first outer wall driving motor is connected to the first outer wall inverted U-shaped brush rack. The present invention has the advantages of being able to automatically clean the inner tank of a stretch water heater, being able to be seamlessly connected with the upper process and the lower process of the stretch water heater inner tank, having high cleaning quality and efficiency, high production capacity, high degree of automation, small equipment footprint, and low energy consumption.

Description

Technical Field

[0001] The invention relates to the field of water heater inner tank cleaning, in particular to a special cleaning device for a stretched water heater inner tank and a cleaning line thereof. Background Art

[0002] At present, the cleaning of the stretched liner is generally done by mesh belt spray cleaning or ultrasonic immersion cleaning. Spray cleaning is to use the mesh belt to continuously transport the workpiece while spraying with chemicals. Multiple liner can be placed in parallel. The nozzle and air nozzle can pass through the conveyor mesh belt and go through degreasing, water washing, water blowing and hot air circulation drying furnace in sequence. Some processes also add a strong cooling process. The disadvantages of the mesh belt spray cleaning method are: first, it is not easy to clean thoroughly. When the inner tank and mesh belt are moving, especially the high workpiece is affected by the mesh belt blocking the workpiece, and some places do not reach the intensity and effect of cleaning. Second, the length of the cleaning line is relatively long. To achieve the cleaning effect, large parts such as the inner tank of the stretch water heater must be cleaned according to the process cleaning time and beat. The faster the beat, the faster the speed of the line body, the longer the length of the line body, and this cleaning method has a long process time and many process sections, so the line body is also long, such as the cleaning section, the dripping section, the drying section and the subsequent cold cutting section; third, the energy consumption is too high and wasteful. The workpiece is stationary, and the energy consumption required for spraying, cutting water and drying is higher, especially in the drying section. The inner tank is too hot and needs to be strongly cooled after coming out. Fourth, due to the many processes and long time, the equipment occupies a large area. When the production capacity is large, the equipment occupies a large area.

[0003] Ultrasonic immersion cleaning is generally carried out by hanging a conveying basket. The inner liner is manually placed in the basket, and the inner liner is sent to the ultrasonic degreasing tank, ultrasonic rinsing tank, wind cutting tank and drying tank in turn through a step-by-step conveyor belt for step-by-step cleaning, and then the inner liner is manually taken out. The disadvantages of using ultrasonic cleaning are: first, it occupies a large area. When the production capacity requirements are relatively high, there are many workpieces to be cleaned, and the workpiece volume is relatively large, the entire cleaning tank will be very large; second, the power consumption is large. The large tank body causes the power of the ultrasonic device and the power of the tank liquid heating to be too large; third, it is inconvenient to transport. The basket is too loaded, too large and too heavy, and it is not easy to transport; fourth, for the half inner liner without a bottom cover, vertical placement will produce a waterless space, so the inner liner must be placed diagonally in the basket, causing inconvenience; fifth, it is not easy to load and unload parts. Too large and too many inner liner makes it difficult to take in and out; sixth, the vertical transportation time is too long, the speed is slow, and the cleaning efficiency is low.

[0004] Whether it is mesh belt spray cleaning or ultrasonic immersion cleaning, their common disadvantages are: poor connection with other previous and subsequent processes in the entire production line, and complicated workpiece turnover; second, low degree of automation; third, high labor intensity of workers, especially in summer, high ambient temperature, resulting in high personnel turnover; fourth, low cleaning efficiency and relatively poor cleaning quality; fifth, large equipment footprint; sixth, high energy consumption. Summary of the invention

[0005] In order to overcome the above problems, the present invention provides a special cleaning device for the stretched water heater tank and a cleaning line thereof, which can automatically clean the stretched water heater tank and can be seamlessly connected with the previous process and the next process of the stretched water heater tank.

[0006] The technical solution of the present invention is: to provide a special cleaning device for the inner tank of a stretch water heater, comprising a frame, a first outer wall spraying and brushing mechanism for cleaning the outer wall of the inner tank is provided at the upper part of the frame, and a first inner tank elevator for lifting the inner tank is provided at the lower part of the frame; the first outer wall spraying and brushing mechanism comprises a first outer wall spraying mechanism for spraying washing liquid to the outer wall of the inner tank and a first outer wall brushing mechanism for brushing the outer wall of the inner tank, the first outer wall brushing mechanism comprises a first outer wall driving motor and a first outer wall inverted U-shaped brush rack, first outer wall bristles are provided on the inner bottom surface of the first outer wall inverted U-shaped brush rack, and the first outer wall driving motor is connected to the first outer wall inverted U-shaped brush rack.

[0007] As an improvement to the present invention, the present invention also includes a first inner wall spraying and brushing mechanism for cleaning the inner wall of the inner tank, the first inner wall spraying and brushing mechanism is arranged at the lower part of the frame, the first inner wall spraying and brushing mechanism includes a first inner wall spraying mechanism for spraying washing liquid onto the inner wall of the inner tank, a first inner wall brushing mechanism for brushing the inner wall of the inner tank and a first inner wall lifting mechanism, the first inner wall brushing mechanism is arranged on the first inner wall lifting mechanism.

[0008] As an improvement to the present invention, the first inner wall washing mechanism includes a first inner wall driving motor and a first inner wall brush rack, first inner wall bristles are provided on the outer surface of the first inner wall brush rack, and the first outer wall driving motor is connected to the first inner wall brush rack.

[0009] As an improvement to the present invention, the first inner liner elevator includes a first inner liner linear driver and at least one pair of symmetrically arranged first inner liner support feet, and the first inner liner support feet can support the curved edge of the inner liner to lift the inner liner along with the first inner liner linear driver; the first inner wall spraying and brushing mechanism is located between the first inner liner support feet.

[0010] As an improvement to the present invention, a first rotating member is provided at the top of the inner bottom surface of the first outer wall inverted U-shaped bristle rack, and the first rotating member allows the first inner liner linear driver to clamp the inner liner when the inner liner rises to the top, and allows the first outer wall inverted U-shaped bristle rack to rotate along the outer wall of the inner liner.

[0011] As an improvement to the present invention, a V-shaped groove is provided on the upper bottom surface of the first liner support foot.

[0012] As an improvement to the present invention, the present invention also includes a shed body and an exhaust system for exhausting waste gas in the shed body, the first outer wall spraying and brushing mechanism and the first inner tank elevator are arranged in the shed body, and the exhaust system is arranged on the shed body.

[0013] As an improvement to the present invention, the present invention also includes a washing liquid supply device, which includes a washing liquid tank and a water pump. The water pump draws out the washing liquid in the washing liquid tank and supplies it to a special cleaning device for the inner tank of the stretch water heater.

[0014] The present invention also provides a special cleaning line for the inner tank of a stretched water heater, comprising the special cleaning device for the inner tank of a stretched water heater.

[0015] The present invention adopts a first outer wall spraying and brushing mechanism for cleaning the outer wall of the inner tank, which is provided at the upper part of the frame, and a first inner tank elevator for lifting the inner tank is provided at the lower part of the frame; the first outer wall spraying and brushing mechanism includes a first outer wall spraying mechanism for spraying washing liquid to the outer wall of the inner tank and a first outer wall brushing mechanism for brushing the outer wall of the inner tank, the first outer wall brushing mechanism includes a first outer wall driving motor and a first outer wall inverted U-shaped brush rack, first outer wall bristles are provided on the inner bottom surface of the first outer wall inverted U-shaped brush rack, the first outer wall driving motor and the first outer wall inverted U-shaped brush rack are connected to each other, and the first outer wall driving motor is connected to the first outer wall inverted U-shaped brush rack. The structure of the brush rack connection, so the present invention can first raise the inner tank to the first outer wall inverted U-shaped brush rack, and then, by rotating the first outer wall inverted U-shaped brush rack, the bristles on the inner bottom surface of the first outer wall inverted U-shaped brush rack act on the outer surface of the inner tank, and then combine with the first outer wall spray mechanism to spray the washing liquid to clean the outer wall of the inner tank. Since the first outer wall inverted U-shaped brush rack is an inverted U-shaped structure, when the present invention is set in the production line, on the one hand, the first outer wall inverted U-shaped brush rack will not block the passage of the inner tank, and at the same time, the outer wall of the barrel and the top spherical part of the inner tank can be well cleaned. Therefore, the present invention has the advantages of being able to automatically clean the inner tank of the stretched water heater, and being able to be seamlessly connected with the upper process and the next process of the stretched water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the side plan structure of the first embodiment of the present invention.

[0017] Figure 2 yes Figure 1 Schematic diagram of the structure of the first outer wall jet brushing mechanism.

[0018] Figure 3 yes Figure 1 Schematic diagram of the structure of the first inner wall jet brushing mechanism.

[0019] Figure 4 It is a schematic structural diagram of a second embodiment of the present invention.

[0020] Figure 5 yes Figure 4 Schematic diagram of the structure of the second inner wall jet brushing mechanism.

[0021] Figure 6 It is a side structural schematic diagram of the first embodiment of the cleaning line of the present invention.

[0022] Figure 7 yes Figure 6 Schematic diagram of the top view structure.

[0023] Figure 8 It is a schematic diagram of the top structure of the second embodiment of the cleaning line of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the invention more clearly understood, the invention is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention and are not used to limit the invention.

[0025] See also Figures 1 to 3 , Figures 1 to 3 Disclosed is a first embodiment of a special cleaning device for a stretch water heater inner tank, comprising a frame 1, wherein a first outer wall spraying and brushing mechanism 3 for cleaning the outer wall of the inner tank 2 is provided at the upper part of the frame 1, and a first inner wall spraying and brushing mechanism 4 and a first inner tank lifter 5 for lifting the inner tank 2 are provided at the lower part of the frame 1; the first outer wall spraying and brushing mechanism 3 comprises a first outer wall spraying mechanism 31 for spraying washing liquid onto the outer wall of the inner tank (in this embodiment, the first outer wall spraying mechanism 31 comprises a first outer wall nozzle, the first outer wall nozzle is connected to the outlet of the water pump 82, and sprays high-pressure cleaning liquid onto the outer surface of the inner tank 2. The first outer wall nozzle can be set separately, first spraying liquid, and then brushing; it can also be set on the inner bottom surface of the first outer wall inverted U-shaped brush frame 322 described below, and as the first outer wall is inverted The U-shaped brush rack 322 rotates with the rotation to achieve the purpose of flushing and brushing at the same time, and the effect is better) and a first outer wall washing mechanism 32 for brushing the outer wall of the inner liner, the first outer wall washing mechanism 32 includes a first outer wall driving motor 321 and a first outer wall inverted U-shaped brush rack 322, and a first outer wall bristle 323 is provided on the inner bottom surface of the first outer wall inverted U-shaped brush rack 322, the first outer wall driving motor 321 is connected to the first outer wall inverted U-shaped brush rack 322, the reason why the present invention sets an inverted U-shaped brush rack is that when the present invention is arranged in the entire cleaning line, the first outer wall inverted U-shaped brush rack 322 can make the inner liner 2 enter the cleaning station of the conveyor line and reach the brush rack, and after cleaning, it is convenient for the inner liner 2 to pass through the brush rack and enter the next process.

[0026] Preferably, the first inner wall spraying and brushing mechanism 4 is arranged at the lower part of the frame 1, and the first inner wall spraying and brushing mechanism 4 includes a first inner wall spraying mechanism 41 for spraying washing liquid onto the inner wall of the inner tank (in this embodiment, the first inner wall spraying mechanism 41 includes a first inner wall nozzle, and the first inner wall nozzle is connected to the outlet of the water pump 82 to spray high-pressure cleaning liquid onto the inner surface of the inner tank 2. The first inner wall nozzle can be set separately to spray liquid first and then brush; it can also be set on the outer surface of the first inner wall brush frame 422 described below, and rotate with the rotation of the first inner wall brush frame 322 to achieve the purpose of flushing and brushing at the same time, and the effect is better), for brushing the inner wall of the inner tank with a first inner wall washing mechanism 42 and a first inner wall lifting mechanism 43, and the first inner wall washing mechanism 42 is arranged on the first inner wall lifting mechanism 43. In this embodiment, the first inner wall brushing mechanism 42 includes a first inner wall driving motor 421 and a first inner wall brush frame 422. First inner wall bristles 423 are provided on the outer surface of the first inner wall brush frame 422. The first outer wall driving motor 421 is connected to the first inner wall brush frame 422. In this embodiment, the shape of the first inner wall brush frame 422 includes but is not limited to a U-shaped structure. The first inner wall brush frame 422 can also be formed by two U-shaped structures intersecting crosswise, or a cover-shaped structure corresponding to the shape of the inner wall of the inner liner 2, etc.

[0027] Preferably, the first inner liner elevator 5 includes a first inner liner linear driver 51 and at least one pair of symmetrically arranged first inner liner support feet 52, the first inner liner linear driver 51 is connected to the first inner liner support feet 52 via a connecting piece 53, the first inner liner support feet 52 can support the curved edge of the inner liner 2 to lift the inner liner 2 along with the first inner liner linear driver 51, and the first inner wall spraying and brushing mechanism 4 is located between the first inner liner support feet 52; the reason why the present invention adopts a structure in which the curved edge of the inner liner 2 is supported by the first inner liner support feet 52 is because this structure will not interfere with the first inner wall washing mechanism 42, and the first inner wall washing mechanism 42 can operate freely in the inner liner 2.

[0028] Preferably, a first rotating member 3221 is provided on the top of the inner bottom surface of the first outer wall inverted U-shaped brush frame 322. Figure 2 , Figure 2 In order to clearly see the first rotating member 3221, the bristles 323 around the first rotating member 3221 are specially deleted. The first rotating member 3221 allows the first inner liner linear driver 51 to clamp the inner liner 2 when it rises to the top, and allows the first outer wall inverted U-shaped bristle frame 322 to rotate along the outer wall of the inner liner 2. In this embodiment, the first rotating member 3221 can be a plane bearing, etc.

[0029] Preferably, a V-shaped groove is provided on the upper bottom surface of the first inner liner support foot 52. The V-shaped groove provided on the upper bottom surface of the first inner liner support foot 52 can prevent the inner liner 2 from sliding left and right on the one hand, and can align the inner liner 2 with the central axis on the other hand to prevent the bristles on one side from not being able to brush the outer wall and / or inner wall of the inner liner when it is deviated too much, thereby affecting the cleaning effect.

[0030] Preferably, the present invention also includes a shed body 6 and an exhaust system 7 for discharging waste gas in the shed body, the first inner wall brush rack 322 of the first outer wall jet brushing mechanism 3, the first inner wall jet brushing mechanism 4 and the first inner liner elevator 5 are arranged in the shed body 6, and the exhaust system 7 is arranged on the shed body 6. The purpose of setting the shed body 6 in the present invention is, on the one hand, to prevent the washing liquid from splashing everywhere and injuring people or other surrounding equipment, and on the other hand, the exhaust system 7 can be arranged on the shed body 6 to discharge the waste gas in the shed body 6 in a centralized manner.

[0031] Preferably, the present invention also includes a washing liquid supply device 8, which includes a washing liquid tank 81 and a water pump 82. The water pump 82 extracts the washing liquid in the washing liquid tank 81 and supplies it to a special cleaning device for the stretch water heater tank, specifically, to the first outer wall nozzle and the first inner wall nozzle.

[0032] In the above embodiment of the present invention, the first inner liner elevator 5 is used to lift the inner liner 2 into the first outer wall spraying and brushing mechanism 3 for cleaning. In actual production, the first inner liner elevator 5 can also be replaced by the first outer wall spraying and brushing lifting mechanism as needed (not shown). That is to say, when working, the inner liner 2 does not move at the work station, but the outer wall of the inner liner 2 is cleaned by descending the first inner wall brush rack 322. The effect is the same. After cleaning, the first inner wall brush rack 322 rises back to its position to prepare for the next work.

[0033] In the above embodiment of the present invention, the first inner wall jet brushing mechanism 4 and the first outer wall jet brushing mechanism 3 are arranged correspondingly up and down, and the inner wall and outer wall of the inner tank 2 can be cleaned simultaneously. In actual production, the present invention can also be arranged to wash the outer wall first and then wash the inner wall at the next station, or to wash the inner wall first and then wash the outer wall at the next station. The structure for washing the outer wall is exactly the same as the first outer wall jet brushing mechanism 3 in the above embodiment, and the structure for washing the inner wall is exactly the same as the first inner wall jet brushing mechanism 4 in the above embodiment, and the purpose of cleaning the inner and outer walls of the inner tank 2 can also be achieved.

[0034] See also Figure 4 and Figure 5 , Figure 4 and Figure 5 The second embodiment of the special cleaning device for the inner tank of a stretched water heater is disclosed. Figure 4 and Figure 5 It can be seen that Figure 4 and Figure 5 The embodiment shown and Figures 1 to 3 Compared with the embodiment shown in the figure, the general structure is the same, except that Figures 1 to 3 A second stretch water heater inner tank special cleaning device is added to one side of the embodiment shown. The second stretch water heater inner tank special cleaning device is arranged on the upper part of the frame 1 and is provided with a cleaning device for cleaning the second inner tank 2 ， The second outer wall spray brushing mechanism 3 of the outer wall ， A second inner wall spraying and brushing mechanism 4 is provided at the lower part of the frame 1. ， and for lifting the second inner tank 2 ， The second liner lift 5 ， The second outer wall spray brushing mechanism 3 ， The first outer wall spraying mechanism 31 is used to spray the cleaning liquid onto the outer wall of the inner tank (the first outer wall spraying mechanism 31 is shared by both. In this embodiment, the first outer wall spraying mechanism 31 also includes a second outer wall nozzle, and the second outer wall nozzle is connected to the outlet of the water pump 82 to spray the high-pressure cleaning liquid onto the second inner tank 2 ， On the outer surface of the first outer wall nozzle can be set separately, first spray liquid, then brush; can also be set on the second outer wall inverted U-shaped brush frame 322 ， On the inner bottom surface, along with the second outer wall inverted U-shaped brush frame 322 ， The second outer wall washing mechanism 32 for washing the outer wall of the inner tank is rotated by the rotation of the inner tank to achieve the purpose of flushing and brushing at the same time, and the effect is better) ， The second outer wall washing mechanism 32 ， Including a second outer wall drive motor 321 ， and the second outer wall inverted U-shaped brush frame 322 ， , the inverted U-shaped brush frame 322 on the second outer wall ， The inner bottom surface is provided with a second outer wall bristle 323 ， The second outer wall driving motor 321 ， The second outer wall inverted U-shaped brush frame 322 ， The reason why the inverted U-shaped brush holder is provided in this embodiment is that after the present invention is provided in the cleaning line, the second outer wall inverted U-shaped brush holder 322 ， That is, the second liner 2 ， Enter the cleaning station of the conveyor line, reach the brush rack, and after cleaning, it is convenient for the second liner 2 ， Pass through the brush rack to enter the next process.

[0035] Preferably, the second inner wall spraying and brushing mechanism 4 ， The second inner wall spraying and brushing mechanism 4 is arranged at the lower part of the frame 1. ，A second inner wall spraying mechanism 41 is included for spraying washing liquid onto the inner wall of the inner tank. ， (In this embodiment, the second inner wall injection mechanism 41 ， The second inner wall nozzle is connected to the outlet of the water pump to spray the high pressure cleaning liquid to the second inner tank 2. ， On the inner surface of the second inner wall nozzle can be set separately, spraying liquid first and then brushing; it can also be set on the second inner wall brush holder 422 described below ， On the outer surface, along with the second inner wall brush frame 322 ， The second inner wall washing mechanism 42 for washing the inner wall of the inner tank is rotated to achieve the purpose of flushing and brushing at the same time, and the effect is better). ， and the second inner wall lifting mechanism 43 ， The second inner wall washing mechanism 42 ， The second inner wall lifting mechanism 43 is provided ， In this embodiment, the second inner wall washing mechanism 42 ， Including a second inner wall drive motor 421 ， and the second inner wall brush holder 422 ， , on the second inner wall brush holder 422 ， The outer surface of the second inner wall bristle 423 is provided ， , the second outer wall driving motor 421 ， The second inner wall brush holder 422 ， In this embodiment, the second inner wall brush frame 422 ， The shape is, but is not limited to, a U-shaped structure, wherein the second inner wall brush frame 422 ， It can also be formed by two U-shaped structures intersecting each other crosswise, or it can be a cover-shaped structure corresponding to the shape of the inner wall of the inner container 2, and so on.

[0036] Preferably, the second liner elevator 5 ， The first inner liner linear drive 51 (the first inner liner elevator 5 and the second inner liner elevator 5) is included. ， A common first inner liner linear drive 51) and at least one pair of symmetrically arranged second inner liner support feet 52 ， The second liner support foot 52 ， Can hold the second liner 2 ， The curved edge of the second liner 2 ， As the first inner tank linear drive 51 rises and falls, the second inner wall spraying and brushing mechanism 4 ， Located at the second inner liner support foot 52 ， Between; using the second liner support 52 ， Holding the second liner 2 ，The arc-shaped edge structure will not be in conflict with the second inner wall washing mechanism 42. ， Interference occurs, the second inner wall washing mechanism 42 ， Available in the second liner 2 ， Runs smoothly.

[0037] Preferably, the inverted U-shaped brush frame 322 on the second outer wall ， A second rotating member 3221 is provided on the top of the inner bottom surface ， , the second rotating member 3221 ， Allow the first inner liner linear drive 51 to move the second inner liner 2 ， When it reaches the top, place the second liner 2 ， Clamp and allow the second outer wall inverted U-shaped brush frame 322 ， Along the second liner 2 ， The outer wall of the second rotating member 3221 rotates. In this embodiment, the second rotating member 3221 ， It can be a plane bearing, etc.

[0038] Preferably, the second liner support foot 52 ， A V-shaped groove is provided on the upper bottom surface of the second inner liner support foot 52 ， The V-shaped groove on the upper bottom surface can prevent the second liner 2 from ， Slide left and right, and then you can move the second liner 2 ， Aim at the central axis to prevent the bristles on one side from not being able to brush the outer and / or inner walls of the inner tank when the brush is too far away, thus affecting the cleaning effect.

[0039] In this embodiment, the shed 6, the exhaust system 7 and the washing liquid supply device 8 can be connected with Figures 1 to 3 The embodiments shown are common and will not be described in detail here.

[0040] In the above embodiment of the present invention, the second inner container elevator 5 is used. ， Place the second liner 2 ， Rise to the second outer wall spray brushing mechanism 3 ， After cleaning, in actual production, the second inner tank elevator 5 can be lifted as needed. ， The second outer wall spray brush lifting mechanism is used instead (not shown), that is, when working, the second inner tank 2 ， It does not move at the workstation, but is sprayed and brushed by the second outer wall cleaning mechanism 3 ， Descend to clean the second liner 2 ， The outer wall of the

[0041] In the above embodiment of the present invention, the second inner wall spraying and brushing mechanism 4 ， With the second outer wall spray brushing mechanism 3 ，The upper and lower parts are set correspondingly, so that the second inner tank 2 can be cleaned at the same time ， In actual production, the present invention can also be set to wash the outer wall first and then wash the inner wall at the next station, or to wash the inner wall first and then wash the outer wall at the next station. The structure for washing the outer wall is the same as the second outer wall spraying and brushing mechanism 3 in the above-mentioned embodiment. ， The structure for washing the inner wall is exactly the same as the second inner wall spraying and brushing mechanism 4 in the above embodiment. ， Exactly the same can also be achieved for the second liner 2 ， The purpose of cleaning the inner and outer walls.

[0042] See also Figure 6 and Figure 7 The present invention also provides a special cleaning line for the inner tank of a stretched water heater, comprising the special cleaning device for the inner tank of a stretched water heater. Figure 6 and Figure 7 The first embodiment of the special cleaning line for the inner tank of a stretch water heater is shown, which includes a degreasing section 100, a water washing section 200 and a dehydration and drying section 300, wherein the degreasing section 100 and the water washing section 200 both use the above-mentioned special cleaning device 400 for the inner tank of a stretch water heater. In this embodiment, the degreasing section 100 and the water washing section 200 each have two special cleaning devices 400 for the inner tank of a stretch water heater (one or more special cleaning devices 400 for the inner tank of a stretch water heater can be provided according to actual needs). When in use, two or more inner tanks 2 are loaded from the previous process, and after being cleaned in the degreasing section 100, they are cleaned in the water washing section 200, and the cleaning method is the same as that of the degreasing section 100. The specific structure of the dehydration and drying section 300 is not described in detail here, and belongs to the content described in another patent document.

[0043] In order to prevent the formation of vaporized skin on the surface of the inner liner 2 after washing with water, the present invention further provides a borax water spraying section 500 between the washing section 200 and the dehydration and drying section 300. After the inner liner 2 is washed with water, borax water is sprayed on the inner wall and the outer wall of the inner liner 2 through the borax water spraying section 500, and then enters the dehydration and drying section 300 for dehydration and drying.

[0044] See also Figure 8 , Figure 8 The second embodiment of the special cleaning line for the inner tank of a stretched water heater is shown. Figure 8 The embodiment shown is in Figure 6 and Figure 7A special cleaning line for the inner tank of a stretched water heater is added on one side of the embodiment shown. However, the degreasing parts 100 of the two lines share a degreasing liquid supply device 600, the water washing parts 200 of the two lines share a water washing liquid supply device 700, and the borax water spraying parts 500 of the two lines share a borax water liquid supply device 800. In actual use, the present invention can also adopt a third, fourth and multiple cleaning lines according to production capacity requirements.

[0045] The present invention is used (with Figure 6 and Figure 7 The embodiment shown is used to illustrate that the working methods of the two lines are similar and will not be repeated). The stretched inner tank 2 is transported to the connecting roller line 900 of the special cleaning line for the stretched water heater inner tank through the roller conveyor line. The connecting roller line 900 is connected to the special cleaning line for the stretched water heater inner tank. A stainless steel chain conveyor line 901 is provided in the inner tank cleaning line shed 6. The stainless steel chain conveyor line 901 is provided with equal pitch tooling. When the stainless steel chain conveyor line 901 is moving, the tooling positions the inner tank 2. The steel chain conveyor line 901 operates in a step-by-step manner. According to the production capacity rhythm, each process section (such as the degreasing section 100 and the water washing section 200) can be designed as a single or multiple workstations. The connecting roller line 900 conveys the inner tank 2 to the stainless steel chain conveyor line 901 according to the rhythm, and the stainless steel chain conveyor line 901 then conveys the inner tank 2 to each cleaning process section in a step-by-step manner. During the cleaning process of the inner tank 2, the stainless steel chain conveyor line 901 stops, and the special cleaning device for the water heater inner tank is stretched to clean the inner tank 2 inside and outside.

[0046] When the liner 2 is transported to the cleaning station and the stainless steel chain conveyor line 901 stops, the lifting doors 902 at the entrance and exit of the shed 6 in each process section are closed from top to bottom to prevent the liquid medicine from overflowing to the outside or to another process section during cleaning. After the liner 2 stops, the first liner elevator 5 lifts the liner 2 to the first rotating part 3221 on the inner bottom surface of the first outer wall inverted U-shaped brush rack 322 to press the liner 2; (the purpose is to achieve mixed production of liner 2 at different heights), and then the first inner wall spray brushing mechanism 4 is moved to the inside of the liner 2, and the bristles used for internal cleaning are made into imitation shapes, which are the same as the inner liner. The structural contour of the first and second parts is similar, and the size of the bristles is larger than the inner diameter of the inner liner 2, so that the bristles can be in close contact with the inner liner 2. When the first inner wall jet brushing mechanism 4 is raised to its position, the first inner wall jet brushing mechanism 4 drives the bristles and the spray pipeline (the spray pipeline is provided with nozzles) to start rotating through the rotating motor at the bottom. During the rotation, the high-pressure water pump is turned on to spray the washing liquid onto the inner liner through the pipeline and the nozzle, thereby achieving the purpose of cleaning the inner liner with the bristles and the liquid at the same time. Since the bristles are rotating and in close contact with the inner liner 2, the cleaning efficiency is high, and the effect of brushing the inner liner while cleaning with the liquid is achieved.

[0047] The outer wall of the inner liner is sprayed and cleaned by the first outer wall jet brushing mechanism 3. After the inner liner 2 is transported to the position and stops, the inner liner 2 lifting mechanism at the bottom is lifted into position, and the first outer wall jet brushing mechanism 3 starts cleaning. The external cleaning principle is as follows: a rotating motor is provided on the upper part of the frame 1, and the motor drives the first outer wall jet brushing mechanism 3 to rotate through a transmission mechanism such as a chain or a gear. The first outer wall jet brushing mechanism 3 is provided with a rotary joint 311, which can realize spray cleaning while rotating and transporting liquid. The first outer wall jet brushing mechanism 3 is provided with a spray pipeline 312, and a high-pressure nozzle is installed on the spray pipeline 312, so that the first outer wall jet brushing mechanism 3 can spray and clean the outer wall of the inner liner 2 at the same time.

[0048] Different process sections adopt the same cleaning method. When the inner liner 2 is cleaned from the first process, the conveyor line runs one pitch in a step-by-step manner to send the inner liner 2 to the next cleaning process for cleaning, thereby completing the cleaning of the entire process of the inner liner;

[0049] After cleaning, the inner liner 2 is sent to the last water blowing and drying process section. The water blowing and drying adopts the principle of using air to blow the water on the surface of the inner liner 2 dry. The process time is fast and the energy consumption is low. It is not necessary to use the original drying furnace method to heat the inner liner 2 to above 100°C and evaporate the water on the inner liner 2 for dehydration and drying. The structure is the same as the cleaning process section. It uses high-pressure air and uses an air knife through the internal and external rotating mechanism and the lifting mechanism to blow dry the inner and outer surfaces of the inner liner 2 to achieve the purpose of drying the inner liner 2. When the room temperature is too low, it can be heated appropriately to increase the temperature of the blowing air and speed up the drying speed.

[0050] The blow-dried liner 2 is directly conveyed from the bottom stainless steel chain conveyor line to the connecting roller conveyor line of the subsequent process, realizing seamless connection between the previous and next processes.

[0051] Of course, in order to prevent the formation of oxide scale on the outer surface of the inner liner 2 during the subsequent enamel firing process after cleaning, the present invention also provides a borax water spraying section 500 between the water washing section 200 and the dehydration and drying section 300. After the inner liner 2 is washed with water, borax water is sprayed on the outer wall of the inner liner 2 through the borax water spraying section 500, and then enters the dehydration and drying section 300 for dehydration and drying.

[0052] The invention is applicable to all stretched inner pots, including stretched water heater inner pots, American water heater inner pots with the same structure, and electric rice cooker inner pots with the same structure.

[0053] Without departing from the concept of the invention, all equivalent changes made by applying the contents of the invention description and drawings are considered to be included in the scope of the claims of the invention.

Claims

1. A special cleaning device for the inner tank of a stretched water heater, characterized in that: The invention comprises a frame (1), wherein a first outer wall spraying and brushing mechanism (3) for cleaning the outer wall of an inner tank (2) and a first inner wall spraying and brushing mechanism (4) for cleaning the inner wall of the inner tank (2) are provided at the upper part of the frame (1), and a first inner tank lifter (5) for lifting and lowering the inner tank (2) is provided at the lower part of the frame (1); the first outer wall spraying and brushing mechanism (3) comprises a first outer wall spraying mechanism (31) for spraying washing liquid onto the outer wall of the inner tank and a first outer wall brushing mechanism (32) for brushing the outer wall of the inner tank, the first outer wall brushing mechanism (32) comprises a first outer wall driving motor (321) and a first outer wall inverted U-shaped brush frame (322), first outer wall bristles (323) are provided on the inner bottom surface of the first outer wall inverted U-shaped brush frame (322), and the first outer wall driving motor (321) is connected to the first outer wall inverted U-shaped brush frame (322); The first inner liner elevator (5) comprises a first inner liner linear drive (51) and at least one pair of symmetrically arranged first inner liner support feet (52), wherein the first inner liner support feet (52) can support the arc-shaped edge of the inner liner (2) to lift the inner liner (2) along with the first inner liner linear drive (51); the first inner wall spraying and scrubbing mechanism (4) is located between the first inner liner support feet (52); A first rotating member (3221) is provided at the top of the inner bottom surface of the first outer wall inverted U-shaped bristle holder (322), wherein the first rotating member (3221) allows the first inner liner linear driver (51) to clamp the inner liner (2) when the inner liner (2) is raised to the top, and allows the first outer wall inverted U-shaped bristle holder (322) to rotate along the outer wall of the inner liner (2); A V-shaped groove is provided on the upper bottom surface of the first liner support foot (52).

2. The special cleaning device for the inner tank of a stretch water heater according to claim 1, characterized in that: The first inner wall spraying and brushing mechanism (4) is arranged at the lower part of the frame (1), and comprises a first inner wall spraying mechanism (41) for spraying washing liquid onto the inner wall of the inner tank, a first inner wall brushing mechanism (42) for brushing the inner wall of the inner tank, and a first inner wall lifting mechanism (43), wherein the first inner wall brushing mechanism (42) is arranged on the first inner wall lifting mechanism (43).

3. The special cleaning device for the inner tank of a stretch water heater according to claim 2, characterized in that: The first inner wall scrubbing mechanism (42) comprises a first inner wall driving motor (421) and a first inner wall brush frame (422), first inner wall bristles (423) are provided on the outer surface of the first inner wall brush frame (422), and the first outer wall driving motor (321) is connected to the first inner wall brush frame (422).

4. The special cleaning device for the inner tank of a stretched water heater according to claim 1, 2 or 3, characterized in that: It also includes a shed body (6) and an exhaust system (7) for exhausting waste gas in the shed body, the first outer wall spraying and scrubbing mechanism (3) and the first liner elevator (5) are arranged in the shed body (6), and the exhaust system (7) is arranged on the shed body (6).

5. The special cleaning device for the inner tank of a stretch water heater according to claim 1, 2 or 3, characterized in that: It also comprises a washing liquid supply device (8), the washing liquid supply device (8) comprising a washing liquid tank (81) and a water pump (82), the water pump (82) extracting washing liquid from the washing liquid tank (81) and supplying the washing liquid to the special cleaning device for the inner tank of the stretch water heater for use.

6. A special cleaning line for stretched water heater tank, characterized by: The invention comprises a special cleaning device for the inner tank of a stretch water heater as claimed in any one of claims 1 to 5.

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