Container cleaning device, system and method

Abstract

The container cleaning device comprises a cleaning frame, the cleaning frame comprises a medium flow guide frame and a plurality of positioning cleaning devices installed on the medium flow guide frame, the medium flow guide frame comprises a first pipe body, a second pipe body and a cover body, and the second pipe body is arranged in the first pipe body; the cover body is fixedly connected to the top of the first pipe body; the positioning cleaning device comprises a cleaning nozzle and an auxiliary cover, the auxiliary cover is located on the outer side of the cleaning nozzle, a first flow channel is formed in the middle of the cleaning nozzle, a second flow channel is further formed in the portion, located on the outer side of the first flow channel, of the cleaning nozzle, and a third flow channel is further formed between the cleaning nozzle and the auxiliary cover. After the cleaning liquid is adopted for cleaning, the interior of the container is heated and dried through pressure hot air sprayed out of the second flow channel, water vapor generated by heating is rapidly pumped away from the third flow channel, and then rapid and effective drying can be conducted.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and in particular to a container cleaning device, system and cleaning method. Background Technology

[0002] In the automated laboratory of hydropower system, the testing of oil samples requires a large number of container consumables. The outer wall of the container is easy to clean because it is not contaminated with oil. However, the inner wall of the container is not easy to clean because it has contained oil samples. Manual cleaning is labor-intensive and inefficient. Therefore, it is necessary to use cleaning equipment to clean the inner wall of the container. To this end, we propose a container cleaning device, system and cleaning method in this application.

[0003] A search revealed that Chinese patent CN116851388A, published on October 10, 2023, discloses a bottle washing machine, including a shell; a cap; a water cleaning system comprising an inlet connected to an external water inlet pipe, a water tank connected to the output end of the inlet, a heating device and a pressure pump respectively connected to the water tank, a water supply pipe connecting the pressure pump and the inner tank, a drainage device connecting the inner tank and the outside, and a water softener connected between the inlet and the heating device; and a basket cleaning device, including an inlet connected to the water supply pipe and multiple fixed columns protruding from the basket cleaning device to support the bottles to be washed, wherein the fixed columns have an outlet connected to the inlet for cleaning the inside of the bottles. Its advantages are: it can clean the inside and outside of the bottle separately, and then dry it with a hot air drying device to complete the bottle cleaning; its disadvantages are: first, the bottle is inverted on the fixed column for cleaning. The hot air drying device can quickly dry the outer wall of the bottle, but for the inside of the bottle, the heated water vapor will accumulate at the bottom of the inverted bottle, so it cannot dry the inside of the bottle quickly and effectively; second, it cannot test the cleanliness of the cleaned bottle. Summary of the Invention The technical problem to be solved by the present invention is to provide a container cleaning device, system and cleaning method, which at least solves the problem that water vapor accumulates at the bottom of an inverted bottle, making it impossible to dry the inside of the bottle quickly and effectively.

[0004] To achieve the above objectives, in a first aspect, this application provides a container cleaning device, including a cleaning frame. The cleaning frame includes a medium flow guide and a plurality of positioning cleaning devices mounted on the medium flow guide. The medium flow guide includes a first tube, a second tube, and a cover. The second tube is disposed inside the first tube, and an airflow cavity is formed between the first tube and the second tube. The cover is fixed to the top of the first tube, and a negative pressure cavity is formed between the cover and the first tube. The second tube contains a water supply cavity. The positioning cleaning devices include a cleaning nozzle and an auxiliary cover. The auxiliary cover is located outside the cleaning nozzle. A first flow channel is provided in the middle of the cleaning nozzle. A second flow channel is also provided outside the first flow channel of the cleaning nozzle. A third flow channel is also provided between the cleaning nozzle and the auxiliary cover. The first flow channel communicates with the water supply cavity, the second flow channel communicates with the airflow cavity, and the third flow channel communicates with the negative pressure cavity.

[0005] The cleaning nozzle includes a first nozzle and a second nozzle. The first nozzle is fixedly installed on the second tube body, and the second nozzle is fixedly installed on the first tube body. The upper ends of the first nozzle and the second nozzle extend beyond the cover body by a certain height, and the first nozzle is located inside the second nozzle. An auxiliary cover is installed on the cover body, and the second nozzle is located inside the auxiliary cover. A first flow channel is located inside the first nozzle, a second flow channel is located between the first nozzle and the second nozzle, and a third flow channel is located between the second nozzle and the auxiliary cover.

[0006] The outer wall of the second nozzle has a guide ring located on the upper side of the negative pressure chamber. Several airflow grooves are axially arranged on the guide ring, and the airflow grooves form the third flow channel.

[0007] A sealing ring is installed at the bottom between the auxiliary cover and the cleaning nozzle.

[0008] The auxiliary cover is also equipped with multiple clamping devices evenly distributed in a ring. The clamping devices are used to clamp and fix the container to be cleaned.

[0009] The clamping device includes a sealing cylinder and a piston. One end of the sealing cylinder is fixed to the auxiliary cover, and the other end is provided with an air inlet. The piston is slidably and sealed inside the sealing cylinder. A slide rod is provided on the side of the piston facing the auxiliary cover. The slide rod can pass through the hole on the auxiliary cover and extend into the auxiliary cover. A spring is installed on the slide rod. One end of the spring abuts against the piston, and the other end abuts against the outer wall of the auxiliary cover.

[0010] An air inlet pipe is connected to the air inlet, and a pressure pipe is fixed on the outer wall of the first pipe body. The air inlet pipe is connected to the pressure pipe.

[0011] The auxiliary cover is also symmetrically equipped with a first fiber optic sensor and a second fiber optic sensor, which are arranged opposite to each other. Both the first and second fiber optic sensors are connected to a photodetector, which is used to connect to the controller. The first fiber optic sensor emits a light beam through the photodetector, and the photodetector receives the light beam emitted by the first fiber optic sensor through the second fiber optic sensor. The photodetector converts the received optical signal into an electrical signal, and the attenuation of the electrical signal after the light beam passes through the container is used to determine whether the container is clean.

[0012] Secondly, this application provides a container cleaning system, including a cleaning equipment body. A container cleaning device is mounted on a basket of the cleaning equipment body. A hot air blower, a vacuum pump, and a water pump are installed inside the housing of the cleaning equipment body. The water pump's inlet is connected to a cleaning water tank, and its outlet is connected to a second connector on the cleaning rack via a hose. The second connector is connected to a water supply chamber. The hot air blower's outlet is connected to a first connector via a hose. The first connector is connected to an airflow chamber. The vacuum pump's suction port is connected to a third connector via a hose. The third connector is connected to a negative pressure chamber. A controller is also installed inside the housing, and the controller is electrically connected to and controls the water pump, the hot air blower, and the vacuum pump.

[0013] Thirdly, this application provides a cleaning method using the aforementioned container cleaning system for cleaning containers, the cleaning method comprising the following steps: S1. Place the container with its outer wall cleaned onto the positioning cleaning device of the cleaning rack; wherein the opening of the container is located between the auxiliary cover and the cleaning nozzle, and the cleaning nozzle extends into the container; S2. The container to be cleaned is clamped and fixed by the clamping device; S3. Push the basket rack into the cleaning equipment body and close the door of the cleaning equipment body; S4. The controller records the initial contamination status of each container by using a photodetector. S5. The controller starts the water pump, hot air blower, and vacuum pump. The hot air blower starts before the water pump. The hot air blows heated filtered air into the airflow chamber and blows it out from the second flow channel. The water pump pumps the cleaning solution in the cleaning tank into the water supply chamber. The cleaning solution is sprayed out from the first flow channel to clean the inner wall of the container. The vacuum pump creates negative pressure inside the negative pressure chamber. After cleaning the container, the cleaning solution is quickly drawn away from the third flow channel. During the cleaning process, the controller intermittently adjusts the speed of the hot air blower. When the hot air pressure intermittently increases and decreases, the hot air mixes with the cleaning solution to produce an impact effect. S6. After cleaning for a period of time, the controller stops the water pump and continues to dry the inner wall of the container with hot air blown out from the second flow channel. After drying for a period of time, the hot air blower is stopped. S7. The controller detects dirt in each container using a photodetector and records the contamination status value of each container after cleaning. If the contamination status value after cleaning reaches the preset value, the cleaning process ends. If the contamination status value of one or more containers after cleaning does not reach the preset value, the process returns to S5.

[0014] Compared with the prior art, the above-conceptual technical solution conceived in this application has the following beneficial effects: 1. The medium guide frame of this invention forms a water supply chamber, an airflow chamber, and a negative pressure chamber inside. The water supply chamber supplies pressurized cleaning fluid to the first flow channel, the airflow chamber introduces pressurized hot air into the second flow channel, and the negative pressure chamber provides negative pressure to the third flow channel, thereby quickly discharging the cleaning fluid and residual water stains. During cleaning, hot air acts as a power source, impacting the cleaning fluid sprayed from the first flow channel, creating a splashing effect. After cleaning with the cleaning fluid, the inside of the container is heated and dried by the pressurized hot air sprayed from the second flow channel. Simultaneously, the water vapor generated by the heating is rapidly drawn away from the third flow channel, enabling rapid and effective drying.

[0015] 2. The auxiliary cover of the present invention is also equipped with a plurality of clamping devices evenly distributed in a ring. The clamping devices are used to clamp and fix the container to be cleaned, so as to prevent the container from being blown away by water flow and air flow during cleaning and causing damage.

[0016] 3. The first optical fiber sensor of the present invention emits a light beam through a photodetector, and the photodetector receives the light beam emitted by the first optical fiber sensor through a second optical fiber sensor. The photodetector converts the received optical signal into an electrical signal, and determines whether the container is clean by the attenuation of the electrical signal after the light beam passes through the container.

[0017] Figure caption To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the container cleaning system of the present invention.

[0019] Figure 2 This is a top view of the container cleaning device of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the container cleaning device of the present invention.

[0021] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of AA.

[0022] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of BB.

[0023] Figure 6 for Figure 4 A schematic diagram of the cross-sectional structure of BB shows the clamping device holding the container.

[0024] Figure 7 This is a schematic diagram of the structure of the second nozzle in this invention.

[0025] Figure 8 This is a schematic diagram of the control system of the present invention.

[0026] Figure label: Cleaning equipment body 10, basket frame 11 Cleaning rack 20, medium guide rack 21, support rod 211, connecting rod 212, first pipe body 213, airflow chamber 2131, second pipe body 214, water supply chamber 2141, cover 215, negative pressure chamber 2151, first connector 216, second connector 217, third connector 218. Positioning cleaning device 22, first nozzle 221, first flow channel 2211, second nozzle 222, second flow channel 2221, guide ring 2222, third flow channel 2223, auxiliary cover 223, sealing ring 2231, extension 224; First fiber optic sensor 23, second fiber optic sensor 24, photodetector 26; Clamping device 25, sealing cylinder 251, piston 252, slide rod 253, spring 254, air inlet 255, air inlet pipe 256; Air pressure hose 27, fourth connector 271; Controller 30, container 40, hot air blower 50, vacuum pump 60, water pump 70, solenoid valve 80. Detailed Implementation

[0027] To more clearly illustrate the purpose, technical solution, and beneficial effects of this application, a further detailed description of this application is provided below in conjunction with illustrations and specific embodiments. It should be noted that the specific embodiments described below are only used to explain the technical content of this application and do not constitute a limitation on the scope of protection of this application.

[0028] Regarding the explanation of terminology: In this application, "and / or" is used to describe the relationship between related objects, covering three possible situations: taking "A and / or B" as an example, it can indicate the situation where only A exists, A and B exist simultaneously, or only B exists; the symbol " / " indicates the "or" relationship between related objects, such as "A / B" which refers to A or B.

[0029] Regarding the description of the embodiments: The terms "exemplary" and "for example" appearing in this application are only used to illustrate the technical solutions through specific examples. It should be particularly emphasized that any implementation method or design scheme marked as "exemplary" or "for example" should not be construed as having an advantage over other solutions. Such expressions are only used to present the technical concepts more intuitively.

[0030] Example 1: See Figure 2-7 This invention provides a container cleaning device, including a cleaning rack 20. The cleaning rack 20 includes a medium flow guide 21 and a plurality of positioning cleaning devices 22 mounted on the medium flow guide 21. The medium flow guide 21 includes a first tube 213, a second tube 214, and a cover 215. The second tube 214 is disposed inside the first tube 213, and an airflow cavity 2131 is formed between the first tube 213 and the second tube 214. The cover 215 is fixed to the top of the first tube 213, and a negative pressure cavity 215 is formed between the cover 215 and the first tube 213. 1. The second pipe body 214 contains a water supply chamber 2141; the positioning cleaning device 22 includes a cleaning nozzle and an auxiliary cover 223. The auxiliary cover 223 is located outside the cleaning nozzle. A first flow channel 2211 is provided in the middle of the cleaning nozzle. A second flow channel 2221 is also provided outside the first flow channel 2211. A third flow channel 2223 is also provided between the cleaning nozzle and the auxiliary cover 223. The first flow channel 2211 is connected to the water supply chamber 2141, the second flow channel 2221 is connected to the airflow chamber 2131, and the third flow channel 2223 is connected to the negative pressure chamber 2151.

[0031] The media guide frame 21 internally forms a water supply chamber 2141, an airflow chamber 2131, and a negative pressure chamber 2151. The water supply chamber 2141 supplies pressurized cleaning fluid to the first flow channel 2211, the airflow chamber 2131 introduces pressurized hot air into the second flow channel 2221, and the negative pressure chamber 2151 provides negative pressure to the third flow channel 2223, thereby quickly discharging the cleaning fluid and residual water stains. During cleaning, hot air acts as a power source, impacting the cleaning fluid sprayed from the first flow channel 2211, creating a splashing effect. After cleaning with the cleaning fluid, the pressurized hot air sprayed from the second flow channel 2221 heats and dries the inside of the container. Simultaneously, the water vapor generated by heating is rapidly drawn away from the third flow channel 2223, enabling rapid and effective drying.

[0032] In this embodiment, see Figure 5The cleaning nozzle includes a first nozzle 221 and a second nozzle 222. The first nozzle 221 is welded to a second tube body 214, and the second nozzle 222 is welded to a first tube body 213. The upper ends of the first nozzle 221 and the second nozzle 222 extend beyond the cover body 215 by a certain height, and the first nozzle 221 is located inside the second nozzle 222. An auxiliary cover 223 is welded and installed on the cover body 215, and the second nozzle 222 is located inside the auxiliary cover 223. A first flow channel 2211 is located inside the first nozzle 221, a second flow channel 2221 is located between the first nozzle 221 and the second nozzle 222, and a third flow channel 2223 is located between the second nozzle 222 and the auxiliary cover 223. In this embodiment, the first flow channel 2211 is the central hole of the first nozzle 221, the second flow channel 2221 is an annular air passage between the first nozzle 221 and the second nozzle 222, and the third flow channel 2223 is an air passage between the second nozzle 222 and the auxiliary cover 223.

[0033] Specifically, see Figure 7 The outer wall of the second nozzle 222 has a guide ring 2222 located above the negative pressure chamber 2151. The guide ring 2222 has several airflow grooves axially arranged on it, forming a third flow channel 2223. The guide ring 2222 provides positioning support for the container 40, while the airflow grooves form an air passage. When the container 40 is placed with its opening facing downwards, the opening of the container 40 is guided by the upper conical portion and finally positioned by the lower end of the guide ring 2222.

[0034] Further, see Figure 5 A sealing ring 2231 is installed at the bottom between the auxiliary cover 223 and the cleaning nozzle. This seals the opening of the container 40 to prevent the cleaning solution from splashing during cleaning.

[0035] In this embodiment, see Figure 3 The medium guide frame 21 includes a support rod 211 and a connecting rod 212. Multiple support rods 211 are connected to the connecting rod 212, and the positioning and cleaning device 22 is installed on the support rod 211.

[0036] Example 2: See Figure 5 , 6 The auxiliary cover 223 is also equipped with multiple clamping devices 25 evenly distributed in a ring. The clamping devices 25 are used to clamp and fix the container 40 to be cleaned, so as to prevent the container 40 from being blown away by water flow and air flow during cleaning and causing damage.

[0037] In this embodiment, see Figure 5The clamping device 25 includes a sealing cylinder 251 and a piston 252. One end of the sealing cylinder 251 is fixed to the auxiliary cover 223, and the other end is provided with an air inlet 255. The piston 252 is slidably and sealingly installed inside the sealing cylinder 251. A slide rod 253 is provided on the side of the piston 252 facing the auxiliary cover 223. The slide rod 253 can pass through a hole in the auxiliary cover 223 and extend into the auxiliary cover 223. A spring 254 is installed on the slide rod 253. One end of the spring 254 abuts against the piston 252, and the other end abuts against the outer wall of the auxiliary cover 223. By injecting compressed air into the air inlet 255, the piston 252 slides towards the container 40, thereby causing the slide rod 253 to press against and clamp the outer wall of the container 40. Figure 6 As shown.

[0038] Further, see Figure 5 An air inlet 256 is connected to the air inlet 255. A pressure pipe 27 is fixed to the outer wall of the first pipe body 213, and the air inlet 256 communicates with the pressure pipe 27. The pressure pipe 27 can be located on one side of the first pipe body 213, or it can be installed on both sides of the first pipe body 213. A fourth connector 271 is connected to the pressure pipe 27. During installation, the fourth connector 271 is connected to the main air pipe through an air hose. The main air pipe is connected to a compressed air source. A solenoid valve 80 is installed on the main air pipe. The solenoid valve 80 is electrically connected to the controller 30, and the controller 30 controls the opening and closing of the solenoid valve 80. When the solenoid valve 80 is open, air is supplied to the air inlet 255, thereby clamping the container 40.

[0039] There can be two, three, or four clamping devices 25.

[0040] Example 3: Based on Example 1 or Example 2, see Figure 4 , 5 6. A first fiber optic sensor 23 and a second fiber optic sensor 24 are symmetrically installed on the auxiliary cover 223. The first fiber optic sensor 23 and the second fiber optic sensor 24 are arranged opposite to each other. Both the first fiber optic sensor 23 and the second fiber optic sensor 24 are connected to the photodetector 26, which is used to connect to the controller 30. The first fiber optic sensor 23 emits a light beam through the photodetector 26, and the photodetector 26 receives the light beam emitted by the first fiber optic sensor 23 through the second fiber optic sensor 24. The photodetector 26 converts the received light signal into an electrical signal. The attenuation of the electrical signal after the light beam passes through the container 40 is used to determine whether the container 40 is clean.

[0041] When the glass container is clean, there is no oil or water stains to block it, and the light beam emitted by the first fiber optic sensor 23 can be received by the second fiber optic sensor 24 more. If there is oil or water stains, the light beam or the oil and water stains will be reflected, causing the light signal received by the second fiber optic sensor 24 to decrease and the electrical signal to be attenuated, thereby determining whether the container 40 is clean.

[0042] The first fiber optic sensor 23 and the second fiber optic sensor 24 are installed near the bottom of the container 40.

[0043] In this embodiment, in order to facilitate the handling of the container 40, protrusions 224 are symmetrically arranged on the upper end of the auxiliary cover 223, and the first fiber optic sensor 23 and the second fiber optic sensor 24 are respectively installed on the protrusions 224 on both sides.

[0044] Example 4: See Figure 1 , 2 3.8. This embodiment provides a container cleaning system, including a cleaning equipment body 10. A container cleaning device is installed on the basket 11 of the cleaning equipment body 10. A hot air blower 50, a vacuum pump 60, and a water pump 70 are installed inside the housing of the cleaning equipment body 10. The inlet of the water pump 70 is connected to a cleaning water tank, and the outlet of the water pump 70 is connected to a second connector 217 on the cleaning rack 20 via a flexible hose. The second connector 217 is connected to a water supply chamber 2141. The outlet of the hot air blower 50 is connected to a first connector 216 via a flexible hose. The first connector 216 is connected to an airflow chamber 2131. The suction port of the vacuum pump 60 is connected to a third connector 218 via a steel wire flexible hose. The third connector 218 is connected to a negative pressure chamber 2151. A controller 30 is also installed inside the housing, and the controller 30 is electrically connected to and controls the water pump 70, the hot air blower 50, and the vacuum pump 60. Flexible hoses are used for easy removal of the cleaning equipment body 10 from the basket 11.

[0045] Cleaning fluid is supplied to the first flow channel 2211 via water pump 70; pressurized hot air is supplied to the second flow channel 2221 via hot air blower 50; and negative pressure is supplied to the third flow channel 2223 via vacuum pump 60.

[0046] In this embodiment, the hot air blower 50 can adopt the electric heating hot air furnace structure disclosed in CN202868977U. The air pressure at the outlet can be adjusted by a frequency converter blower.

[0047] The controller 30 can be a microcontroller or a PLC.

[0048] Example 5: This embodiment provides a cleaning method using a container cleaning system from Embodiment 4, for cleaning containers. The cleaning method includes the following steps: S1. Place the cleaned container 40 onto the positioning cleaning device 22 of the cleaning rack 20; wherein, the opening of the container 40 is located between the auxiliary cover 223 and the cleaning nozzle, and the cleaning nozzle extends into the container 40. The edge of the opening of the container 40 is fitted with the sealing ring 2231. The container 40 can be picked up and placed by a robot or a robotic arm.

[0049] S2. The container 40 to be cleaned is clamped and fixed by the clamping device 25.

[0050] In use, the solenoid valve 80 is opened and closed by the controller 30. When the solenoid valve 80 is open, air is supplied to the air inlet 255 of the clamping device 25, thereby clamping the container 40. When the solenoid valve 80 is closed, the clamping device 25 is depressurized, and the piston 252 moves outward under the action of the spring 254, releasing the clamp on the container 40.

[0051] S3. Push the basket frame 11 into the cleaning equipment body 10 and close the door of the cleaning equipment body 10.

[0052] S4. The photodetector 26 detects dirt in each container 40, and the controller 30 records the initial contamination status value of each container 40.

[0053] The first fiber optic sensor 23 emits a light beam through the photodetector 26, and the photodetector 26 receives the light beam emitted by the first fiber optic sensor 23 through the second fiber optic sensor 24. The photodetector 26 converts the received optical signal into an electrical signal.

[0054] Obtain the initial contamination status value so that the data after cleaning can be compared.

[0055] S5, Controller 30 controls the start of water pump 70, hot air blower 50 and vacuum pump 60, with hot air blower 50 starting before water pump 70. Hot air blower 50 sends heated filtered air into airflow chamber 2131, and hot air is blown out from second flow channel 2221. Water pump 70 pumps cleaning fluid from cleaning tank to water supply chamber 2141, and cleaning fluid is sprayed out from first flow channel 2211 to clean the inner wall of container 40. Vacuum pump 60 creates negative pressure inside negative pressure chamber 2151, and after cleaning container 40, cleaning fluid is quickly drawn away from third flow channel 2223. During the cleaning process, controller 30 intermittently adjusts the speed of hot air blower 50. When the hot air pressure intermittently increases and decreases, hot air mixes with cleaning fluid to produce an impact effect. S6. After cleaning for a period of time, the controller 30 controls the water pump 70 to stop, and continues to use the hot air blown out from the second flow channel 2221 to quickly dry the inner wall of the container. After drying for a period of time, the hot air blower 50 is stopped.

[0056] S7. The photodetector 26 detects dirt in each container 40, and the controller 30 records the contamination status value of each container 40 after cleaning. If the contamination status value after cleaning reaches the preset value, the cleaning ends. If the contamination status value of one or more containers 40 after cleaning does not reach the preset value, the process returns to S5 and cleans again.

[0057] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the invention. Modifications and variations made by those skilled in the art in accordance with the spirit of the invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A container cleaning device, comprising a cleaning rack (20), the cleaning rack (20) comprising a medium flow guide (21) and a plurality of positioning cleaning devices (22) mounted on the medium flow guide (21), characterized in that: The medium guide frame (21) includes a first tube (213), a second tube (214), and a cover (215). The second tube (214) is disposed inside the first tube (213), and an airflow cavity (2131) is formed between the first tube (213) and the second tube (214). The cover (215) is fixed to the top of the first tube (213), and a negative pressure cavity (2151) is formed between the cover (215) and the first tube (213). The second tube (214) contains a water supply cavity (2141). The positioning cleaning device (22) includes a cleaning nozzle and an auxiliary cover (223). The auxiliary cover (223) is located outside the cleaning nozzle. A first flow channel (2211) is provided in the middle of the cleaning nozzle. A second flow channel (2221) is also provided outside the first flow channel (2211) of the cleaning nozzle. A third flow channel (2223) is also provided between the cleaning nozzle and the auxiliary cover (223). The first flow channel (2211) is connected to the water supply chamber (2141), the second flow channel (2221) is connected to the airflow chamber (2131), and the third flow channel (2223) is connected to the negative pressure chamber (2151).

2. The container cleaning device according to claim 1, characterized in that: The cleaning nozzle includes a first nozzle (221) and a second nozzle (222). The first nozzle (221) is fixedly installed on the second tube body (214), and the second nozzle (222) is fixedly installed on the first tube body (213). The upper ends of the first nozzle (221) and the second nozzle (222) extend out of the cover body (215) by a certain height. The first nozzle (221) is located inside the second nozzle (222). An auxiliary cover (223) is installed on the cover body (215), and the second nozzle (222) is located inside the auxiliary cover (223). A first flow channel (2211) is located inside the first nozzle (221), a second flow channel (2221) is located between the first nozzle (221) and the second nozzle (222), and a third flow channel (2223) is located between the second nozzle (222) and the auxiliary cover (223).

3. The container cleaning device according to claim 2, characterized in that: The outer wall of the second nozzle (222) has a guide ring (2222) located on the upper side of the negative pressure chamber (2151). The guide ring (2222) has a plurality of airflow grooves axially arranged on it, and the airflow grooves form the third flow channel (2223).

4. The container cleaning device according to claim 1, characterized in that: A sealing ring (2231) is installed at the bottom between the auxiliary cover (223) and the cleaning nozzle.

5. A container cleaning device according to claim 1, characterized in that: The auxiliary cover (223) is also equipped with a number of clamping devices (25) evenly distributed in a ring. The clamping devices (25) are used to clamp and fix the container (40) to be cleaned.

6. A container cleaning device according to claim 5, characterized in that: The clamping device (25) includes a sealing cylinder (251) and a piston (252). One end of the sealing cylinder (251) is fixed to the auxiliary cover (223), and the other end is provided with an air inlet (255). The piston (252) is slidably and sealed inside the sealing cylinder (251). A slide rod (253) is provided on the side of the piston (252) facing the auxiliary cover (223). The slide rod (253) can pass through the hole on the auxiliary cover (223) and extend into the auxiliary cover (223). A spring (254) is installed on the slide rod (253). One end of the spring (254) abuts against the piston (252), and the other end abuts against the outer wall of the auxiliary cover (223).

7. A container cleaning device according to claim 6, characterized in that: An air inlet (255) is connected to an air inlet pipe (256), and a pressure pipe (27) is fixed on the outer wall of the first pipe body (213). The air inlet pipe (256) is connected to the pressure pipe (27).

8. A container cleaning device according to claim 5, characterized in that: The auxiliary cover (223) is also symmetrically equipped with a first fiber optic sensor (23) and a second fiber optic sensor (24). The first fiber optic sensor (23) and the second fiber optic sensor (24) are arranged opposite to each other. The first fiber optic sensor (23) and the second fiber optic sensor (24) are both connected to a photodetector (26). The photodetector (26) is used to connect to the controller (30). The first fiber optic sensor (23) emits a light beam through the photodetector (26). The photodetector (26) receives the light beam emitted by the first fiber optic sensor (23) through the second fiber optic sensor (24). The photodetector (26) converts the received light signal into an electrical signal. The attenuation of the electrical signal after the light beam passes through the container (40) is used to determine whether the container (40) is clean.

9. A container cleaning system, comprising a cleaning equipment body (10), characterized in that: The container cleaning device of claim 8 is installed on the basket (11) of the main body (10) of the cleaning equipment. A hot air blower (50), a vacuum pump (60) and a water pump (70) are installed inside the shell of the main body (10). The inlet of the water pump (70) is used to connect to the cleaning water tank. The outlet of the water pump (70) is connected to the second connector (217) on the cleaning rack (20) through a hose. The second connector (217) is connected to the water supply chamber (2141). The outlet of the hot air blower (50) is connected to the first connector (216) through a hose. The first connector (216) is connected to the airflow chamber (2131). The suction port of the vacuum pump (60) is connected to the third connector (218) through a hose. The third connector (218) is connected to the negative pressure chamber (2151). The housing also houses a controller (30), which is electrically connected to and controls a water pump (70), a hot air blower (50), and a vacuum pump (60).

10. A cleaning method using the container cleaning system of claim 9, used for cleaning containers, characterized in that: The cleaning method includes the following steps: S1. Place the container (40) with its outer wall cleaned on the positioning cleaning device (22) of the cleaning rack (20); wherein the opening of the container (40) is located between the auxiliary cover (223) and the cleaning nozzle, and the cleaning nozzle extends into the container (40); S2. The container (40) to be cleaned is clamped and fixed by the clamping device (25); S3. Push the basket (11) into the cleaning equipment body (10) and close the door of the cleaning equipment body (10); S4. The contaminant is detected in each container (40) by the photodetector (26), and the controller (30) records the initial contamination status value of each container (40). S5. The controller (30) controls the water pump (70), hot air blower (50) and vacuum pump (60) to start. The hot air blower (50) starts before the water pump (70). The hot air blower (50) sends the heated filtered air into the airflow chamber (2131). The hot air is blown out from the second flow channel (2221). The water pump (70) pumps the cleaning liquid in the cleaning water tank into the water supply chamber (2141). The cleaning liquid is sprayed out from the first flow channel (2211) to clean the inner wall of the container (40). The vacuum pump (60) creates a negative pressure inside the negative pressure chamber (2151). After cleaning the container (40), the cleaning liquid is quickly drawn away from the third flow channel (2223). During the cleaning process, the controller (30) intermittently adjusts the speed of the hot air blower (50). When the hot air pressure intermittently increases and decreases, the hot air mixes with the cleaning liquid to produce a striking effect. S6. After cleaning for a period of time, the controller (30) controls the water pump (70) to stop and continues to dry the inner wall of the container with hot air blown out from the second flow channel (2221). After drying for a period of time, the hot air blower (50) is stopped. S7. The photodetector (26) detects dirt in each container (40), and the controller (30) records the pollution status value of each container (40) after cleaning. If the pollution status value after cleaning reaches the preset value, the cleaning ends. If the pollution status value of one or more containers (40) after cleaning does not reach the preset value, the process returns to S5.

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