Ultrasonic cleaner and control method thereof

Abstract

The invention provides an ultrasonic cleaner and a control method thereof, the ultrasonic cleaner comprises a water tank and a spray gun which are communicated in sequence, and the spray gun is arranged at the bottom of the water tank; the side wall of the water tank is provided with an ultrasonic transducer electrically connected with the ultrasonic generator, the bottom end is provided with a spray gun connecting rod through hole, and the bottom is provided with a pressure sensor; a connecting rod is arranged at the bottom of the spray gun and connected with a first push rod, the first push rod pushes upwards to touch a pressure sensor, a pipeline is arranged in the connecting rod, one end of the pipeline communicates with the spray gun, the other end of the pipeline communicates with a switching valve to be switched between a water path and an air path, and the pressure sensor is electrically connected with the switching valve to control switching. The device has the beneficial effects that according to different cleaning stages and requirements, ultrasonic cleaning, water flushing, ventilation, drainage and other operations can be accurately carried out, it is ensured that the medicine bag bottles can be properly treated in all cleaning links, and on the basis that it is ensured that the medicine bag bottles are cleaned, residual liquid in the medicine bag bottles after cleaning can be efficiently discharged.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic cleaners, and in particular to an ultrasonic cleaner and a control method thereof. Background Art

[0002] In the field of packaging technology such as medicine and food, ultrasonic cleaning technology is widely used in the pre-cleaning process of container bottles, especially for removing surface contaminants such as solid particles and water-soluble compounds on the inner and outer walls of the bottle. This cleaning method can efficiently remove tiny particles and contaminants attached to the bottle wall through the cavitation effect generated by high-frequency ultrasound in the liquid, ensuring that the cleanliness of the container bottle meets high-standard production requirements. Usually, the design of ultrasonic cleaning equipment is to separate the ultrasonic water tank from the production line, and automatically grab the medicine bottle through a robot and immerse it in the water tank for cleaning. After cleaning, the robot takes out the bottle and puts it back on the assembly line to enter the next process.

[0003] However, although this design has achieved automated cleaning to a certain extent, there are still some significant shortcomings in practical applications, especially when dealing with large-sized medicine bottles (such as vials). The problem is more prominent. Large-sized containers such as vials are characterized by a small bottle mouth diameter and a large bottle body diameter. This structure will cause the water in the bottle to be unable to be quickly discharged from the bottle mouth after ultrasonic cleaning. Due to the narrow bottle mouth, the drainage speed is limited, and the residual water in the bottle takes a long time to completely flow out, which directly affects production efficiency. In addition, the residual water in the bottle is easy to form droplets during the robot transfer process, dripping onto the production line or other products, causing cross-contamination and increasing quality risks. Summary of the invention

[0004] The object of the present invention is to provide an ultrasonic cleaner and a control method thereof, so as to ensure that the residual liquid in the medicine bag bottle after cleaning can be discharged efficiently.

[0005] The present invention provides an ultrasonic cleaner, comprising a water tank and a spray gun which are connected in sequence, wherein the spray gun is arranged at the bottom of the water tank; The water tank has an ultrasonic transducer on the side wall which is electrically connected to the ultrasonic generator, a through hole for the spray gun connecting rod is provided at the bottom, and a pressure sensor is provided at the bottom; The spray gun has a connecting rod at the bottom that is connected to the first push rod. The first push rod is pushed up to touch the pressure sensor. A pipeline is arranged inside the connecting rod. One end of the pipeline is connected to the spray gun and the other end is connected to the switching valve to switch between the water circuit and the air circuit. The pressure sensor is electrically connected to the switching valve to control the switching.

[0006] As a preferred solution, the switching valve includes a second push rod, an air circuit position, a water circuit position and a return spring arranged laterally on the left and right sides. The second push rod is electrically connected to the pressure sensor and switches the switching valve to the air circuit position. The second push rod is retracted and the return spring switches the switching valve to the water circuit position.

[0007] As a preferred solution, the gas path position includes a passage connecting the gas path and the pipeline and a locking valve connecting the water path; the water path position includes a passage connecting the water path and the pipeline and a locking valve connecting the gas path.

[0008] As a preferred solution, the first push rod is electrically connected to a photoelectric sensor that senses the presence of the medicine bottle to be cleaned to control the lifting and lowering of the spray gun.

[0009] As a preferred solution, the photoelectric sensor is provided with a delay device to delay control of the first push rod.

[0010] As a preferred solution, the spray gun includes a plurality of spray gun heads connected in parallel, and the spray gun heads are provided with spray gun frames fixedly connected to connecting rods; and branch pipelines are provided in the spray gun heads to connect the pipelines.

[0011] As a preferred solution, an overflow port is provided on the side of the water tank to control the water level of the water tank to be lower than 80% of the total height of the water tank.

[0012] The present invention also provides a control method for an ultrasonic cleaner, wherein the initial position of the ultrasonic cleaner is that the switching valve is in the water channel position, the clamp clamps the medicine package bottle to the spray gun in the water tank and immerses it in water, the outer wall is ultrasonically cleaned, and the inner wall is ultrasonically cleaned and rinsed with water; After cleaning, the fixture moves up to make the medicine bottle 1 to 3 cm away from the liquid surface. The photoelectric sensor senses the movement of the medicine bottle and controls the first push rod to push the spray gun up to the mouth of the medicine bottle. The first push rod touches the pressure sensor to cause pressure changes. The pressure sensor controls the switching valve to switch to the air path position for ventilation and drainage. After drainage is completed, the fixture transfers the medicine package bottle to the transfer transportation line, and the switching valve and spray gun are restored to their initial positions.

[0013] As a preferred solution, the duration of the water flushing and ventilation and drainage is controlled by a delay device of a photoelectric sensor.

[0014] The beneficial effects of the present invention are: 1. The present invention switches between the water circuit and the air circuit through a switching valve, and controls the lifting and lowering of the spray gun, and can accurately perform ultrasonic cleaning, water flushing, ventilation and drainage operations according to different cleaning stages and needs, ensuring that the medicine package bottle can be properly treated in each cleaning link, ensuring that the medicine package bottle is cleaned, and the residual liquid in the medicine package bottle after cleaning can be efficiently discharged.

[0015] 2. The photoelectric sensor of the present invention can sense the presence of the medicine bottle and control the lifting and lowering of the spray gun; the pressure sensor senses the pressure change at the bottom of the tank and controls the switching of the switching valve; the delay device can also delay the duration of the first push rod and water flushing, ventilation and drainage. The entire cleaning process is automatically controlled, reducing manual intervention and improving the efficiency and stability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a structural schematic diagram of switching the gas path state of the present invention.

[0018] Figure 3 It is a structural schematic diagram of the water tank of the present invention.

[0019] The reference numerals in the accompanying drawings are: 1. Water tank; 11. Overflow port; 2. Spray gun; 21. Connecting rod; 22. Spray gun head; 23. Spray gun stand; 24. Branch pipeline; 3. Pressure sensor; 4. First push rod; 5. Pipeline; 6. Switching valve; 61. Second push rod; 62. Air path position; 63. Water path position; 64. Reset spring; 7. Photoelectric sensor; 8. Delay device; 9. Medicine bag bottle. DETAILED DESCRIPTION

[0020] To illustrate the features of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Embodiment 1: See also Figures 1 to 3 , an embodiment of the present invention provides an ultrasonic cleaner, comprising a water tank 1 and a spray gun 2 connected in sequence, wherein the spray gun 2 is arranged at the bottom of the water tank 1; This embodiment has three water tanks 1, with ultrasonic transducers electrically connected to ultrasonic generators arranged on the side walls, a through hole for the spray gun 2 connecting rod 21 arranged at the bottom, and a pressure sensor 3 arranged at the bottom; The spray gun 2 has a connecting rod 21 at the bottom thereof connected to the first push rod 4. The first push rod 4 is electrically connected to the photoelectric sensor 7 that senses the position of the medicine bottle 9 to be cleaned to control the lifting and lowering of the spray gun 2. After the first push rod 4 pushes the spray gun 2 upward to the position, it can touch the pressure sensor 3. The spray gun 2 in this embodiment includes 8 spray gun heads 22 in parallel, and the spray gun heads 22 are provided with a spray gun frame 23 fixedly connected to the connecting rod 21; a branch pipeline 24 is provided in the spray gun head 22 to connect the pipeline 5. During processing, the manipulator synchronously clamps 8 medicine bottles 9 through a clamp for cleaning to avoid the possibility of collision between the bottles, thereby causing scratches and affecting subsequent use.

[0022] A pipeline 5 is arranged inside the connecting rod 21, one end of the pipeline 5 is connected to the spray gun 2 and the other end is connected to the switching valve 6 to switch between the water circuit and the gas circuit, and the pressure sensor 3 is electrically connected to the switching valve 6 to control the switching. Specifically, the switching valve 6 of this embodiment includes a second push rod 61, a gas circuit position 62, a water circuit position 63 and a return spring 64 arranged horizontally on the left and right sides, the second push rod 61 is electrically connected to the pressure sensor 3 and switches the switching valve 6 to the gas circuit position 62, the gas circuit position 62 includes a passage connecting the gas circuit and the pipeline 5 and a locking valve connecting the water circuit, so as to realize the air circuit closing the water circuit; the second push rod 61 is retracted, and the return spring 64 switches the switching valve 6 to the water circuit position 63, the water circuit position 63 includes a passage connecting the water circuit and the pipeline 5 and a locking valve connecting the gas circuit. By switching between the water circuit and the air circuit by the switching valve 6, and controlling the lifting and lowering of the spray gun 2, operations such as ultrasonic cleaning, water flushing, ventilation and drainage can be accurately performed according to different cleaning stages and needs, ensuring that the medicine bottle 9 can be properly treated in each cleaning link, and on the basis of ensuring that the medicine bottle 9 is clean, the residual liquid in the medicine bottle 9 after cleaning can also be efficiently discharged. Specifically, the clamp clamps the medicine bottle 9 and puts it into the water tank 1, and the opening of the medicine bottle 9 is aligned with the spray gun 2; ultrasonic cleaning is continuously performed in the water tank 1, and after the medicine bottle 9 is in place, the spray gun 2 is flushed with water; after the flushing is completed, the medicine bottle 9 moves up to completely leave the liquid surface by about 1 cm, and the pressure sensor is triggered to switch the spray gun 2 to the air circuit to clean the residual water in the bottle. After that, the medicine bottle 9 is taken away and put into the assembly line for subsequent cleaning.

[0023] In addition, this embodiment also makes adaptive modifications to the device, and a delay device 8 is set on the photoelectric sensor 7 to delay the control of the first push rod 4, and the duration of water flushing and ventilation and drainage is controlled by the delay device 8. An overflow port 11 is also set on the side of the water tank 1 to control the water level of the water tank 1 to be lower than 80% of the total height of the water tank 1, so as to prevent excessive liquid in the water tank 1 from overflowing and polluting the production line.

[0024] Embodiment 2: This embodiment provides a control method for using the ultrasonic cleaner of embodiment 1, wherein the initial position of the ultrasonic cleaner is that the switching valve 6 is at the water path position 63, the clamp clamps the medicine package bottle 9 to the spray gun 2 in the water tank 1 and immerses it in water, ultrasonically cleans the outer wall, and ultrasonically cleans and rinses the inner wall with water; After cleaning, the fixture moves up to make the medicine bottle 9 1 cm away from the liquid surface, the photoelectric sensor 7 senses the movement of the medicine bottle 9 and controls the first push rod 4 to push the spray gun 2 up to the mouth of the medicine bottle 9, the first push rod 4 touches the pressure sensor 3 to cause pressure changes, and the pressure sensor 3 controls the switching valve 6 to switch to the gas path position 62 for ventilation and drainage; After the drainage is completed, the fixture transfers the medicine package bottle 9 to the transfer transportation line, and the switching valve 6 and the spray gun 2 are restored to the initial position.

[0025] Preferably, the delay device 8 of the photoelectric sensor 7 of Example 1 can be used to set the delay time required by the production line, thereby achieving precise control of the duration of the water flushing and ventilation and drainage.

[0026] The above embodiments and drawings are only used to illustrate the technical solutions of the present invention, and are not intended to limit the present invention. The present invention is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that any changes, modifications, additions or substitutions made by those skilled in the art within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention. Other related technical structures not fully disclosed in the present invention are prior art in the art.

Claims

1. An ultrasonic cleaner, characterized in that: It comprises a water tank (1) and a spray gun (2) which are connected in sequence, wherein the spray gun (2) is arranged at the bottom of the water tank (1); A water tank (1) has an ultrasonic transducer on its side wall which is electrically connected to an ultrasonic generator, a spray gun connecting rod through hole at its bottom, and a pressure sensor (3) at its bottom; The spray gun (2) has a connecting rod (21) at the bottom thereof connected to a first push rod (4). The first push rod (4) pushes upward to touch a pressure sensor (3). A pipeline (5) is arranged inside the connecting rod (21). One end of the pipeline (5) is connected to the spray gun (2) and the other end is connected to a switching valve (6) for switching between a water circuit and an air circuit. The pressure sensor (3) is electrically connected to the switching valve (6) to control the switching.

2. The ultrasonic cleaner according to claim 1, characterized in that: The switching valve (6) comprises a second push rod (61), an air path position (62), a water path position (63) and a return spring (64) which are arranged laterally on the left and right sides. The second push rod (61) is electrically connected to the pressure sensor (3) and switches the switching valve (6) to the air path position (62). When the second push rod (61) is retracted, the return spring (64) switches the switching valve (6) to the water path position (63).

3. The ultrasonic cleaner according to claim 2, characterized in that: The gas path position (62) includes a passage connecting the gas path and the pipeline (5) and a locking valve connecting the water path; the water path position (63) includes a passage connecting the water path and the pipeline (5) and a locking valve connecting the gas path.

4. The ultrasonic cleaner according to claim 1, characterized in that: The first push rod (4) is electrically connected to a photoelectric sensor (7) for sensing the presence of the medicine bottle (9) to be cleaned, thereby controlling the lifting and lowering of the spray gun (2).

5. The ultrasonic cleaner according to claim 4, characterized in that: The photoelectric sensor (7) is provided with a delay device (8) for delaying control of the first push rod (4).

6. The ultrasonic cleaner according to claim 1, characterized in that: The spray gun (2) comprises a plurality of spray gun heads (22) connected in parallel, wherein the spray gun heads (22) are provided with spray gun frames (23) fixedly connected to the connecting rods (21); and a branch pipeline (24) is provided in the spray gun heads (22) to connect to the pipeline (5).

7. The ultrasonic cleaner according to claim 1, characterized in that: An overflow port (11) is arranged on the side of the water tank (1) to control the water level of the water tank (1) to be lower than 80% of the total height of the water tank.

8. A control method for an ultrasonic cleaner, characterized in that: The initial position of the ultrasonic cleaner is that the switching valve (6) is in the water path position, the clamping device clamps the medicine package bottle (9) to the spray gun (2) in the water tank (1) and immerses it in water, ultrasonically cleans the outer wall, and ultrasonically cleans and rinses the inner wall with water; After cleaning is completed, the fixture is moved upward so that the medicine bottle (9) is 1 to 3 cm away from the liquid surface, the photoelectric sensor (7) senses the movement of the medicine bottle (9) and controls the first push rod (4) to push the spray gun (2) upward to the mouth of the medicine bottle (9), the first push rod (4) touches the pressure sensor (3) to cause a pressure change, and the pressure sensor (3) controls the switching valve (6) to switch to the air path position for ventilation and drainage; After the drainage is completed, the fixture transfers the medicine package bottle (9) to the transfer transport line, and the switching valve (6) and the spray gun (2) are restored to their initial positions.

9. The control method of the ultrasonic cleaner according to claim 8, characterized in that: The duration of the water flushing and ventilation and drainage is controlled by a delay device (8) of the photoelectric sensor (7).

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