Hopper cleaning machine capable of automatically taking and placing cover and automatically opening and closing valve

Abstract

The utility model provides a hopper cleaning machine capable of automatically taking and placing a cover and automatically opening and closing a valve, which comprises a cleaning chamber, and an automatic cover taking and placing mechanism, an automatic valve opening and closing mechanism, an automatic conveying line, an automatic door and a rotary chassis mechanism are arranged in the cleaning chamber. The automatic cover taking and placing mechanism comprises a rotating air cylinder, a lifting air cylinder, a lifting telescopic rod and a vacuum suction cup, the rotating air cylinder is connected with the lifting air cylinder, the lifting telescopic rod is arranged in the lifting air cylinder, the end of the lifting telescopic rod is connected with the vacuum suction cup, and the rotating air cylinder and the lifting air cylinder are each provided with a position detection device. The vacuum chuck is provided with a vacuum degree detection device which can prevent the hopper cover from falling off and can give an alarm. The automatic opening and closing valve is achieved through a pneumatic actuator, a plug pin type self-locking butterfly valve and an in-place detection device, and the hopper cover butterfly valve can be opened and closed in the cleaning chamber. The cleaning machine further has the functions of cleaning and drying the hopper cover and the butterfly valve, the hopper can automatically enter and exit from the cleaning chamber, manual participation is reduced, and high automation of the hopper cleaning process is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cleaning machines, and more specifically, to a hopper cleaning machine that can automatically pick up and put down the cover and automatically open and close the valve. Background Technology

[0002] In industrial production, hoppers are commonly used equipment for storing and conveying materials, and their cleanliness is crucial for product quality and production safety. Regular cleaning of hoppers is a necessary measure to ensure smooth production processes and prevent cross-contamination of materials. The pharmaceutical hopper cleaning machine proposed in Chinese Utility Model Patent Application No. CN202121703109.3 belongs to the field of pharmaceutical equipment cleaning devices. A pharmaceutical hopper cleaning machine includes: a frame for placing pharmaceutical hoppers; a water tank with a water storage cavity, wherein the frame is rotatably connected to and communicates with the water tank; a water pump located on one side of the water tank; and a high-pressure nozzle located above the frame and connected to a water source via an external water pipe.

[0003] Existing hopper cleaning technologies and equipment have many limitations. Traditional hopper cleaning machines typically require a large amount of manual operation. The process of hoppers entering and exiting the cleaning chamber often relies on manual handling or simple conveyor equipment, which is not only inefficient but also prone to damage due to human error, affecting the hoppers' lifespan and subsequent accuracy. Furthermore, manual handling is labor-intensive, leading to high labor costs and difficulty in ensuring timely cleaning in large-scale production scenarios.

[0004] Existing cleaning machines cannot automate the lid removal and closing operations. Workers need to manually disassemble and install the hopper lid, a process that is not only time-consuming and labor-intensive, but may also result in improper operation leading to a poor seal, which in turn affects the subsequent cleaning effect and the airtightness of the material during storage. Furthermore, manual handling of the lid can cause secondary contamination due to contact between hands and the hopper lid, which is detrimental to maintaining the cleanliness of the hopper.

[0005] Existing cleaning machines also lack automatic valve opening and closing functionality for the valves on the hoppers. Valves must be manually opened before cleaning and manually closed afterward, increasing the complexity of the cleaning process and requiring manual intervention. Furthermore, manual valve operation may result in incomplete opening or closing, affecting the discharge of cleaning fluid and the normal use of subsequent hoppers.

[0006] In terms of cleaning and drying, most existing cleaning machines can only clean the hopper body, making it difficult to thoroughly and effectively clean and dry the hopper cover and butterfly valve. Over long-term use, the hopper cover and butterfly valve accumulate a large amount of material residue and dirt. If they are not thoroughly cleaned and dried, they will become a hidden danger for bacterial growth and material residue, causing contamination for the next storage and transportation of materials.

[0007] Furthermore, due to the lack of advanced automated control and detection methods, existing cleaning machines struggle to guarantee the stability and consistency of the cleaning process. For example, during the lid loading and unloading process, the absence of position detection and vacuum detection devices makes it impossible to monitor the hopper lid's adsorption status in real time, potentially leading to lid detachment during loading and unloading, causing equipment damage or safety accidents. Similarly, the lack of position detection devices during valve operation makes it impossible to accurately determine whether the valve is fully open or closed.

[0008] In summary, existing hopper cleaning machines have significant shortcomings in terms of automation, cleaning effect, and operational safety. With the continuous expansion of industrial production scale and increasingly stringent product quality requirements, there is an urgent need for a new type of hopper cleaning machine capable of automatically entering and exiting the cleaning chamber, automatically removing and closing the hopper lid, automatically opening and closing the valve, and effectively cleaning and drying the hopper lid and butterfly valve. This would improve production efficiency, reduce labor costs, and ensure cleaning quality and production safety. Therefore, we have made improvements and proposed a hopper cleaning machine with automatic lid removal and automatic valve opening and closing. Utility Model Content

[0009] The purpose of this utility model is to address the problems raised in the existing background technology. To achieve the above-mentioned utility model objective, this utility model provides the following technical solution: a hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing, comprising a cleaning chamber, wherein an automatic lid loading and unloading mechanism, an automatic valve opening and closing mechanism, an automatic conveyor line, an automatic door, and a rotating chassis mechanism are installed in the cleaning chamber.

[0010] As a preferred technical solution of this utility model, the automatic cap picking and placing mechanism includes a rotary cylinder, a lifting cylinder, a lifting telescopic rod, and a vacuum suction cup.

[0011] As a preferred technical solution of this utility model, the rotary cylinder is connected to the lifting cylinder, the lifting cylinder is provided with a lifting telescopic rod, and the end of the lifting telescopic rod is connected to the vacuum suction cup.

[0012] As a preferred technical solution of this utility model, both the rotary cylinder and the lifting cylinder are equipped with position detection devices, and the vacuum suction cup is equipped with a vacuum degree detection device.

[0013] As a preferred technical solution of this utility model, the automatic switching valve mechanism includes a pneumatic actuator, a pin-type self-locking butterfly valve, and a position detection device.

[0014] As a preferred technical solution of this utility model, the positioning detection device is installed on the outer wall of the valve body of the pin-type self-locking butterfly valve near the valve stem movement area.

[0015] As a preferred embodiment of this invention, the output shaft of the pneumatic actuator is connected to the valve stem of the pin-type self-locking butterfly valve via a coupling.

[0016] As a preferred technical solution of this utility model, the pneumatic actuator is connected to the air source through an air passage.

[0017] As a preferred technical solution of this utility model, the pneumatic actuator is installed above the valve stem of the pin-type self-locking butterfly valve.

[0018] As a preferred technical solution of this utility model, a cleaning shower pipe is provided above the cleaning chamber, and a cleaning nozzle is provided on the cleaning shower pipe.

[0019] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention enables fully automated operation of the entire process, from the hopper automatically entering and exiting the cleaning chamber, to automatically removing and closing the lid, automatically opening and closing the valve, and finally cleaning and drying. This eliminates the time intervals and efficiency differences between manual operations at each stage, making the hopper cleaning process seamless and greatly shortening the cleaning cycle of a single hopper, thereby significantly improving overall production efficiency.

[0020] This utility model integrates an automatic conveyor line, an automatic door, an automatic lid-removing mechanism, and an automatic valve-switching mechanism, which work together to achieve continuous cleaning of multiple hoppers. While one hopper is being cleaned and dried, other hoppers can simultaneously complete their loading / unloading, lid removal / removal, and valve-switching operations, forming a highly efficient continuous operation mode and further increasing the cleaning throughput per unit time.

[0021] This invention, through a precise control system and preset parameters, ensures consistency in cleaning time, cleaning fluid flow rate, nozzle spray angle, and drying temperature and time for each cleaning cycle. This guarantees uniform and thorough cleaning and drying of each hopper, effectively avoiding inconsistent cleaning quality caused by the subjectivity and uncertainty of manual operation, and ensuring the stability and standardization of product cleaning quality.

[0022] This invention reduces the number of manual contacts with the hopper during the fully automated cleaning process, thus lowering the risk of secondary contamination caused by human error. Simultaneously, the automatic lid loading and unloading and automatic valve opening and closing functions ensure the sealing and cleanliness of the hopper's interior during cleaning, further improving the quality of the cleaned product.

[0023] This invention's highly automated operation mode reduces reliance on extensive manual labor, allowing businesses to minimize manpower investment in the cleaning process. What previously required multiple workers to complete the hopper cleaning task now necessitates only a small number of personnel for equipment monitoring and simple maintenance, significantly reducing labor costs.

[0024] The precise control function of this utility model equipment makes the use of cleaning fluid and energy more rational. The flow rate and spraying time of the cleaning fluid can be precisely adjusted according to the actual situation of the hopper, avoiding waste of cleaning fluid; the hot air temperature and time during the drying process can also be effectively controlled, improving energy utilization efficiency and reducing operating costs.

[0025] This utility model's automated operation reduces workers' contact with cleaning fluids and high-temperature equipment during the cleaning process, lowering the risk of safety accidents that may be caused by manual operation, such as chemical burns and high-temperature scalds, thus protecting the health and safety of employees.

[0026] This utility model cleaning machine is equipped with various detection devices, such as position detection devices, vacuum detection devices, and positioning detection devices. These devices can provide real-time feedback on the equipment's operating status and the working conditions of each component. Managers can monitor the equipment's operation at any time through the monitoring system, promptly identify and address potential faults and problems, and achieve refined management of the production process.

[0027] The structure of this cleaning machine is versatile and can adapt to the cleaning needs of hoppers of different specifications and types. By adjusting the parameters of the automatic lid loading and unloading mechanism and the automatic valve opening and closing mechanism, it can operate on hopper lids and valves of different sizes and shapes to meet diverse production needs. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the present invention;

[0029] Figure 2 A schematic diagram of the pin-type self-locking butterfly valve provided by this utility model;

[0030] Figure 3 A schematic diagram of the lifting cylinder structure provided by this utility model;

[0031] Figure 4 A schematic diagram of the automatic cap-retrieving and placing mechanism provided by this utility model;

[0032] Figure 5 This is a schematic diagram of the automatic switching valve mechanism provided by this utility model;

[0033] Figure 6 A schematic diagram of the cleaning shower pipe structure provided by this utility model.

[0034] The image shows:

[0035] 1. Cleaning chamber; 2. Automatic cover loading and unloading mechanism; 21. Rotary cylinder; 22. Lifting cylinder; 23. Lifting telescopic rod; 24. Vacuum suction cup; 3. Automatic valve switching mechanism; 31. Pneumatic actuator; 32. Pin-type self-locking butterfly valve; 33. Position detection device; 4. Automatic conveyor line; 5. Automatic door; 6. Rotating chassis mechanism; 7. Cleaning shower pipe; 8. Cleaning nozzle. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0037] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, in the absence of conflict, the embodiments and features and technical solutions in the embodiments of this utility model can be combined with each other. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] Example 1: Please refer to Figures 1-6 A hopper washing machine with automatic lid loading and unloading and automatic valve opening and closing includes a washing chamber 1. The washing chamber 1 houses an automatic lid loading and unloading mechanism 2, an automatic valve opening and closing mechanism 3, an automatic conveyor line 4, an automatic door 5, and a rotating chassis mechanism 6. The automatic lid loading and unloading mechanism 2 includes a rotary cylinder 21, a lifting cylinder 22, a lifting telescopic rod 23, and a vacuum suction cup 24. The rotary cylinder 21 is connected to the lifting cylinder 22, and the lifting telescopic rod 23 is installed inside the lifting cylinder 22. The end of the lifting telescopic rod 23 is connected to the vacuum suction cup 24. Both the rotary cylinder 21 and the lifting cylinder 22 are equipped with position detection devices, and the vacuum suction cup 24 is equipped with a vacuum degree detection device. The automatic valve opening and closing mechanism 3 includes a pneumatic actuator 31, a pin-type self-locking butterfly valve 32, and a position detection device 33. The position detection device 33 is installed on the outer wall of the pin-type self-locking butterfly valve 32 near the valve stem movement area.

[0039] The output shaft of the pneumatic actuator 31 is connected to the valve stem of the pin-type self-locking butterfly valve 32 via a coupling. The pneumatic actuator 31 is connected to an air source via an air circuit. The pneumatic actuator 31 is installed above the valve stem of the pin-type self-locking butterfly valve 32. A cleaning spray pipe 7 is installed above the cleaning chamber 1, and a cleaning nozzle 8 is installed on the cleaning spray pipe 7. The hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing aims to achieve a high degree of automation in the hopper cleaning process and reduce manual intervention. Its working process mainly includes the automatic entry and exit of the hopper into the cleaning chamber 1, the automatic lid loading and unloading, and the automatic valve opening and closing operations in the cleaning chamber 1, while cleaning and drying the hopper lid and butterfly valve. The entire process is completed collaboratively by the automatic lid loading and unloading mechanism 2, the automatic valve opening and closing mechanism 3, the automatic conveyor line 4, the automatic door 5, and the rotating chassis mechanism 6.

[0040] When a hopper to be cleaned reaches the designated position on the automatic conveyor line 4, the system receives a signal, and the automatic door 5 opens. The automatic conveyor line 4 starts, smoothly conveying the hopper into the cleaning chamber 1. The opening and closing of the automatic door 5 is precisely controlled by the control system to ensure that no collisions occur during the hopper's entry and exit. After the hopper completes all cleaning and drying operations in the cleaning chamber 1, the automatic conveyor line 4 starts again, conveying the hopper out of the cleaning chamber 1. Then, the automatic door 5 closes, awaiting the entry of the next hopper.

[0041] The automatic lid-loading mechanism 2 operates as follows: Initially, the rotary cylinder 21 and lifting cylinder 22 are in preset positions. When the hopper enters the cleaning chamber 1 and reaches the designated position, the control system issues a command, and the rotary cylinder 21 begins operation, driving the lifting cylinder 22 to rotate directly above the hopper lid. The position detection device of the rotary cylinder 21 monitors its rotational position in real time. When it reaches the predetermined position, it sends a signal back to the control system, which then stops the rotary cylinder 21. Next, the lifting cylinder 22 starts, and the lifting telescopic rod 23 extends downwards, causing the vacuum suction cup 24 to gradually approach the hopper lid. The position detection device of the lifting cylinder 22 monitors the descent position of the lifting telescopic rod 23 in real time. When the vacuum suction cup 24 contacts the hopper lid, the position detection device sends a signal back to the control system, and the lifting cylinder 22 stops descending. At this time, the vacuum system is activated, causing the vacuum suction cup 24 to generate vacuum suction, adhering to the hopper lid. The vacuum degree detection device monitors the vacuum degree of the vacuum suction cup 24 in real time, ensuring that the hopper lid is firmly adsorbed.

[0042] If the vacuum level does not reach the set value, it indicates that the hopper cover may not have been properly adsorbed. The vacuum detection device will send a signal to the control system, which will then issue an alarm to remind the operator to check. Once it is confirmed that the hopper cover is firmly adsorbed, the lifting cylinder 22 will drive the lifting telescopic rod 23 to rise and remove the hopper cover from the hopper. Then, the rotating cylinder 21 will operate again to rotate the hopper cover to the designated placement position.

[0043] Lid Placement: After the hopper is cleaned and dried, the hopper lid needs to be placed back on the hopper. Rotary cylinder 21 rotates the hopper lid to directly above the hopper. Lifting cylinder 22 lowers the lifting telescopic rod 23, aligning the hopper lid with the hopper opening. The position detection device monitors the descent position in real time. Once the hopper lid is accurately placed on the hopper, lifting cylinder 22 stops descending. The vacuum system stops working, the vacuum suction cup 24 loses suction, and the hopper lid is placed on the hopper. Finally, lifting cylinder 22 raises the lifting telescopic rod 23, and rotary cylinder 21 returns to its initial position, ready for the next lid removal operation.

[0044] The automatic switching valve mechanism 3 works as follows: When the hopper enters the cleaning chamber 1 and reaches the designated position, the control system issues a valve opening command. The pneumatic actuator 31 obtains compressed air from the air source through the air circuit, driving its output shaft to rotate. The output shaft of the pneumatic actuator 31 is connected to the valve stem of the pin-type self-locking butterfly valve 32 through a coupling, thereby driving the valve stem to rotate and opening the pin-type self-locking butterfly valve 32. The position detection device 33 is installed on the outer wall of the valve body of the pin-type self-locking butterfly valve 32 near the valve stem movement area to monitor the rotation position of the valve stem in real time. When the valve stem rotates to the open position, the position detection device 33 feeds back a signal to the control system, and the control system confirms that the valve has opened.

[0045] After the hopper is cleaned and dried, the control system issues a valve closing command. The pneumatic actuator 31 obtains compressed air again through the air circuit, driving the output shaft to rotate in the reverse direction. The output shaft drives the valve stem to rotate in the reverse direction, closing the pin-type self-locking butterfly valve 32. The position detection device 33 monitors the rotation position of the valve stem in real time. When the valve stem rotates to the closed position, it sends a signal back to the control system, which confirms that the valve is closed.

[0046] Cleaning and drying working principle: When the hopper enters the cleaning chamber 1, the hopper cover is removed, and the valve is opened, the cleaning spray pipe 7 above the cleaning chamber 1 begins operation. The cleaning nozzle 8 sprays the cleaning fluid at a certain pressure and angle onto the inside of the hopper, the hopper cover, and the pin-type self-locking butterfly valve 32, thoroughly cleaning these components. After cleaning is completed, the supply of cleaning fluid is stopped, and the hopper, hopper cover, and butterfly valve may be dried using a hot air system or other drying equipment to ensure that the cleaned components are dry.

[0047] Working principle of the rotating chassis mechanism 6: The rotating chassis mechanism 6 can drive the hopper to rotate within the cleaning chamber 1, ensuring that all parts of the hopper can fully contact the cleaning liquid and hot air, thereby improving the cleaning and drying effect. During the cleaning and drying process, the rotating chassis mechanism 6 rotates at a preset speed and direction, ensuring that both the inside and outside of the hopper are treated evenly.

[0048] Example 2: A hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing includes a cleaning chamber 1. The cleaning chamber 1 is equipped with an automatic lid loading and unloading mechanism 2, an automatic valve opening and closing mechanism 3, an automatic conveyor line 4, an automatic door 5, and a rotating chassis mechanism 6. The working process of the hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing is as follows: Preparation stage: Check whether all components of the cleaning machine are normal, including the automatic lid loading and unloading mechanism 2, the automatic valve opening and closing mechanism 3, the automatic conveyor line 4, the automatic door 5, and the rotating chassis mechanism 6, ensuring that the equipment is fault-free. Confirm that the cleaning fluid in the cleaning pipeline 7 is sufficient and the air source pressure is stable, providing the power required for the normal operation of the pneumatic actuator 31 and related cylinders. Turn on the control system, perform initialization settings, and set the cleaning time, drying time, and rotating chassis speed parameters.

[0049] Hopper enters cleaning chamber 1: The hopper to be cleaned is placed at the starting position of the automatic conveyor line 4. The operator presses the start button, and the automatic conveyor line 4 begins operation. When the hopper approaches the automatic door 5 of cleaning chamber 1, the sensor installed on the automatic conveyor line 4 or the automatic door 5 detects the arrival of the hopper and transmits a signal to the control system. Upon receiving the signal, the control system controls the automatic door 5 to open, and the automatic conveyor line 4 continues to run, smoothly conveying the hopper into cleaning chamber 1. When the hopper reaches the designated position inside cleaning chamber 1, the automatic conveyor line 4 stops running, and the automatic door 5 closes to prevent cleaning fluid from splashing out during the cleaning process.

[0050] Automatic Lid Removal: The control system sends a lid removal command to the automatic lid removal mechanism 2. The rotary cylinder 21 starts working, rotating at a preset angle, driving the connected lifting cylinder 22 to rotate directly above the hopper lid. The position detection device of the rotary cylinder 21 monitors the rotation position in real time. When it reaches the predetermined position, it sends a signal back to the control system, which then stops the rotary cylinder 21. The lifting cylinder 22 starts, and the lifting telescopic rod 23 extends downward, driving the vacuum suction cup 24 at its end to gradually approach the hopper lid. The position detection device of the lifting cylinder 22 monitors the descent position of the lifting telescopic rod 23 in real time. When the vacuum suction cup 24 contacts the hopper lid, the position detection device sends a signal back to the control system, and the lifting cylinder 22 stops descending. The vacuum system starts, causing the vacuum suction cup 24 to generate a vacuum suction force, adhering to the hopper lid. The vacuum degree detection device monitors the vacuum degree of the vacuum suction cup 24 in real time. If the vacuum degree reaches the set value, it indicates that the hopper lid is firmly adhering. The lifting cylinder 22 then drives the lifting telescopic rod 23 to rise, removing the hopper lid from the hopper. If the vacuum level does not reach the set value, the vacuum detection device will send a signal to the control system, which will then issue an alarm and suspend operation until the operator can handle the situation. After the hopper cover is removed, the rotary cylinder 21 will operate again to rotate the hopper cover to the designated position.

[0051] Automatic valve opening: The control system sends a valve opening command to the automatic valve switching mechanism 3. The pneumatic actuator 31 obtains compressed air from the air source through the air circuit, driving its output shaft to rotate. The output shaft of the pneumatic actuator 31 drives the valve stem of the pin-type self-locking butterfly valve 32 to rotate through the coupling, causing the valve to gradually open. The position detection device 33, installed on the outer wall of the pin-type self-locking butterfly valve 32 near the valve stem movement area, monitors the rotation position of the valve stem in real time. When the valve stem rotates to the open position, the position detection device 33 feeds back a signal to the control system, and the control system confirms that the valve has opened.

[0052] Cleaning Stage: The cleaning shower pipe 7 above the cleaning chamber 1 begins operation, and the cleaning nozzles 8 spray the cleaning fluid at a certain pressure and angle onto the inside of the hopper, the hopper cover, and the pin-type self-locking butterfly valve 32. The rotating chassis mechanism 6 starts, driving the hopper to rotate within the cleaning chamber 1, ensuring that all parts of the hopper are fully in contact with the cleaning fluid, thus improving the cleaning effect. Cleaning proceeds according to the preset cleaning time, and the flow rate of the cleaning fluid and the spray angle of the nozzles can be adjusted as needed during the cleaning process.

[0053] Drying Stage: After the cleaning time is completed, the cleaning solution supply to the cleaning shower pipe 7 is stopped. The drying equipment, such as the hot air system, is started to dry the hopper, hopper cover, and pin-type self-locking butterfly valve 32. The rotating chassis mechanism 6 continues to drive the hopper to rotate, ensuring that all parts are heated evenly and accelerating the drying speed. The drying process continues until the preset drying time is completed.

[0054] Automatic valve closure: After drying is complete, the control system sends a valve closure command to the automatic switching valve mechanism 3. The pneumatic actuator 31 obtains compressed air through the air circuit and drives the output shaft to rotate in the reverse direction. The output shaft drives the valve stem of the pin-type self-locking butterfly valve 32 to rotate in the reverse direction through the coupling, so that the valve gradually closes. The position detection device 33 monitors the rotation position of the valve stem in real time. When the valve stem rotates to the closed position, it feeds back a signal to the control system, and the control system confirms that the valve has been closed.

[0055] Automatic lid placement: The control system sends a lid placement command to the automatic lid placement mechanism 2. The rotary cylinder 21 rotates the hopper lid to directly above the hopper. The lifting cylinder 22 lowers the lifting telescopic rod 23, aligning the hopper lid with the hopper opening. The position detection device of the lifting cylinder 22 monitors the descent position in real time. Once the hopper lid is accurately placed on the hopper, the lifting cylinder 22 stops descending. The vacuum system stops working, the vacuum suction cup 24 loses suction, and the hopper lid is placed on the hopper. The lifting cylinder 22 raises the lifting telescopic rod 23, and the rotary cylinder 21 returns to its initial position, ready for the next lid removal operation.

[0056] As the hopper leaves the cleaning chamber 1: Automatic door 5 opens, and automatic conveyor line 4 starts, transporting the cleaned, dried hopper, with its lid closed and valve shut, out of cleaning chamber 1. Once the hopper has completely left cleaning chamber 1, automatic door 5 closes, and the cleaning machine completes one full work cycle, awaiting the arrival of the next hopper.

[0057] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing, comprising a cleaning chamber (1), characterized in that, The cleaning chamber (1) is equipped with an automatic cover loading and unloading mechanism (2), an automatic valve opening and closing mechanism (3), an automatic conveyor line (4), an automatic door (5), and a rotating chassis mechanism (6).

2. A hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing as described in claim 1, characterized in that, The automatic lid picking and placing mechanism (2) includes a rotary cylinder (21), a lifting cylinder (22), a lifting telescopic rod (23), and a vacuum suction cup (24).

3. A hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing as described in claim 2, characterized in that, The rotary cylinder (21) is connected to the lifting cylinder (22), and the lifting cylinder (22) is provided with a lifting telescopic rod (23), the end of which is connected to the vacuum suction cup (24).

4. A hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing as described in claim 3, characterized in that, Both the rotary cylinder (21) and the lifting cylinder (22) are equipped with position detection devices, and the vacuum suction cup (24) is equipped with a vacuum degree detection device.

5. A hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing as described in claim 4, characterized in that, The automatic switching valve mechanism (3) includes a pneumatic actuator (31), a pin-type self-locking butterfly valve (32), and a position detection device (33).

6. A hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing as described in claim 5, characterized in that, The positioning detection device (33) is installed on the outer wall of the valve body of the pin-type self-locking butterfly valve (32) near the valve stem movement area.

7. A hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing as described in claim 6, characterized in that, The output shaft of the pneumatic actuator (31) is connected to the valve stem of the pin-type self-locking butterfly valve (32) via a coupling.

8. A hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing as described in claim 7, characterized in that, The pneumatic actuator (31) is connected to the air source through an air passage.

9. A hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing as described in claim 8, characterized in that, The pneumatic actuator (31) is installed above the valve stem of the pin-type self-locking butterfly valve (32).

10. A hopper cleaning machine with automatic lid loading and unloading and automatic valve opening and closing as described in claim 9, characterized in that, A cleaning shower pipe (7) is provided above the cleaning chamber (1), and a cleaning nozzle (8) is provided on the cleaning shower pipe (7).

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