Lung clearing and sputum excretion instrument for respiratory medicine department

Abstract

The invention discloses a respiratory medicine lung clearing and sputum excretion instrument, and relates to the field of internal medicine sputum excretion, the respiratory medicine lung clearing and sputum excretion instrument comprises a base body and a collecting box, the base body is internally provided with a placing groove for providing a placing space for the collecting box, the upper portion of the collecting box is connected with a sputum suction pipe, and the left side of the collecting box is provided with a suction port; the left side of the suction port is connected with a movable butt joint mechanism, the left side of the movable butt joint mechanism is connected with a conveying channel, the upper portion of the conveying channel communicates with a disinfection mechanism to disinfect sucked gas, and a pumping pipe and a suction machine are arranged above the disinfection mechanism. According to the lung clearing and sputum excretion instrument for the respiratory medicine department, the collecting box can be arranged to be a disposable article through detachable connection between the collecting box and the base body, the collecting box can be taken down from the base body to be replaced after being used, an automatic blocking mechanism is arranged in the collecting box, an opening of the collecting box can be blocked when the device topples over, sputum is prevented from entering the instrument, and the device is convenient to use. And the use safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sputum drainage in internal medicine, and specifically to a sputum-clearing and -draining instrument for the respiratory department of internal medicine. Background Art

[0002] In the care of patients in the respiratory department of internal medicine, for patients with accumulated sputum, external instruments are needed to aspirate the sputum in the patient's body to keep the patient's breathing smooth. Currently, the existing sputum-clearing and -draining instruments generally aspirate by inserting into the position of the sputum in the patient's body.

[0003] Prior Art 1 (a Chinese patent with the application number CN202411529348.X and published on January 10, 2025): A sputum-clearing and -draining device, by setting an anti-blocking component, while realizing the segmentation of sputum, can change the position of the blade, thus achieving a better cutting and cleaning effect on the sputum, and can prevent sputum from remaining on the blade. By setting a disassembly component, it realizes the quick installation and disassembly of the suction nozzle, thus facilitating the cleaning and disinfection of the suction nozzle, and can achieve a good fixing effect after installation. By setting a cleaning component, while cutting the sputum, it can clean the sputum in the suction nozzle, thus reducing the disassembly times of the suction nozzle. By setting an auxiliary component, it realizes the quick installation and disassembly of the housing, facilitating the cleaning of the housing. By setting the way of the fixing ring, it realizes the quick disassembly of the second ring body, thus facilitating subsequent replacement and improving the service life of the device; it solves the problem that the existing sputum-clearing and -draining devices do not have a good anti-blocking function. Prior Art 2 (a Chinese patent with the application number CN202110477570.X and published on July 27, 2021): A sputum-clearing and -draining device, including a wearing mechanism, a vibration mechanism, and a sputum suction mechanism. The wearing mechanism includes a positioning cylinder and two fixing straps arranged on both sides of one end of the positioning cylinder for fixing the positioning cylinder on the human chest. Among them, an opening is provided on the side of the positioning cylinder attached to the human body, and the ends of the two fixing straps away from the positioning cylinder are connected by a magic tape. When the present invention is applied, when the piston plate moves up and down, a positive pressure or negative pressure is formed inside the positioning cylinder above the piston plate. When it is positive pressure, the gas inside the positioning cylinder is discharged from the air outlet pipe. When it is negative pressure, the gas inside the sputum suction bottle is inhaled into the positioning cylinder through the first hose, and then a suction force is formed inside the sputum suction tube, sucking the sputum from the sputum suction tube into the sputum suction bottle. The combination of percussion and sputum suction is adopted, and when the percussion intensity increases, the negative pressure degree will also increase accordingly, so that the suction force of the sputum suction tube will also increase accordingly. At the same time, the percussion and suction intensities are controlled by the user himself.

[0004] When the current sputum drainage instrument sucks sputum from a patient, the sucked sputum is collected in a container. The connection between the container and the device is rather cumbersome, which is not conducive to subsequent replacement. Moreover, when the container sucks sputum, if the device topples over and the sputum moves into the suction device, it will cause serious pollution to the suction device and may also damage the device. In addition, the directly discharged gas during the suction process may also pollute the air if it carries germs. Summary of the Invention

[0005] The purpose of the present invention is to provide a sputum clearing and drainage instrument for the department of respiratory medicine to solve the problems raised in the above background technology. When the current sputum drainage instrument sucks sputum from a patient, the sucked sputum is collected in a container. The connection between the container and the device is rather cumbersome, which is not conducive to subsequent replacement. Moreover, when the container sucks sputum, if the device topples over and the sputum moves into the suction device, it will cause serious pollution to the suction device and may also damage the device. In addition, the directly discharged gas during the suction process may also pollute the air if it carries germs.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A sputum clearing and drainage instrument for the department of respiratory medicine includes a base body and a collection box. A placement groove for providing a placement space for the collection box is arranged inside the base body. A sputum suction tube is connected above the collection box, and a suction port is arranged on the left side of the collection box. The left side of the suction port is connected with a movable docking mechanism, and the left side of the movable docking mechanism is connected with a delivery channel. A disinfection mechanism is communicated above the delivery channel to disinfect the sucked gas. A suction tube and a suction machine are arranged above the disinfection mechanism. The suction tube and the suction machine are connected to provide air extraction control for the delivery channel. An automatic blocking mechanism is arranged inside the collection box to block the suction port to prevent sputum from flowing out when it topples over.

[0007] Further optimizing the technical solution, a nested connection is formed between the placement groove and the collection box, and an observation window is arranged on the front side of the placement groove to check the collection volume of the collection box.

[0008] Further optimizing the technical solution, suction ports are evenly arranged at the outer end of the sputum suction tube, and a concave guiding groove is arranged on the surface of the suction port to guide the suction airflow.

[0009] Further optimizing the technical solution, the disinfection mechanism includes a first disinfection chamber and a second disinfection chamber. The first disinfection chamber is connected with the delivery channel, and the gas enters the second disinfection chamber along the suction tube after passing through the first disinfection chamber.

[0010] To further optimize this technical solution, the first disinfection chamber is a radiation sterilization chamber, and a radiation sterilizer is provided inside the first disinfection chamber. The second disinfection chamber is a liquid sterilization chamber, and a guiding pipe is provided inside the second disinfection chamber. An exhaust port is provided at the bottom of the guiding pipe, and the guiding pipe is communicated with the pumping pipe.

[0011] To further optimize this technical solution, an air outlet is provided above the second disinfection chamber, a liquid discharge port is provided below the second disinfection chamber, and a communicating groove is connected above the second disinfection chamber. A sealing cover is detachably connected above the communicating groove.

[0012] To further optimize this technical solution, the automatic plugging mechanism includes a plugging block, a second spring, and a control mechanism; The plugging block is arranged inside the suction port, and a horizontal sliding structure is formed between the plugging block and the collection box; The second spring is arranged on the right side of the plugging block to provide a left thrust for the plugging block, so that the plugging block fits with the suction port; The control mechanism is arranged outside the plugging block to control the movement of the plugging block and the movable docking mechanism.

[0013] To further optimize this technical solution, the movable docking mechanism includes a sealing docking head, a telescopic pipe, and a first spring; The sealing docking head is arranged inside the base body and forms a horizontal sliding structure with the base body, and the sealing docking head is located on the left side of the suction port; The telescopic pipe is fixed between the sealing docking head and the conveying channel to communicate the conveying channel and the sealing docking head; The first spring is arranged outside the sealing docking head to provide a right thrust for the sealing docking head.

[0014] To further optimize this technical solution, the control mechanism includes an elastic connection pad, a top rod, a connecting block, a driving block, a third spring, an extrusion block, and an automatic triggering mechanism; The elastic connection pad is arranged outside the collection box, and the elastic connection pad is located below the suction port; The top rod is arranged on the left side of the elastic connection pad, and the top rod pushes the elastic connection pad and the plugging block to fit together to the right; The connecting block is fixed outside the sealing docking head; The driving block is respectively fixed on the front side of the connecting block and the left side of the top rod; The third spring is arranged on the left side of the driving block to provide a right thrust for the driving block; The extrusion block is arranged below the driving block, and the upper part of the extrusion block is designed with an inclined structure. The extrusion block moves upward to push the driving block to move to the left; The automatic triggering mechanism is arranged outside the extrusion block to control the movement of the extrusion block.

[0015] To further optimize this technical solution, the automatic trigger mechanism includes an inclination sensor, a magnetic connection base, a fourth spring, and an electromagnet; The inclination sensor is installed above the base body to monitor the state of the base body; The magnetic connection base is fixed below the extrusion block, and a vertical sliding structure is formed between the magnetic connection base and the base body; The fourth spring is arranged below the magnetic connection base to provide an upward thrust for the magnetic connection base; The electromagnet is arranged below the magnetic connection base to attract the magnetic connection base.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the detachable connection between the collection box and the base body, the collection box can be set as a disposable item, which can be removed from the base body for replacement after use. Moreover, an automatic sealing mechanism is arranged in the collection box, which can seal the opening of the collection box when the device is tilted, preventing sputum from entering the device and improving the use safety.

[0017] Through the disinfection mechanism, the sucked gas can be disinfected, killing the germs in the gas and avoiding environmental pollution caused by their emission into the air. Moreover, the second disinfection chamber in the disinfection mechanism can wash the gas with disinfectant water to fully disinfect and sterilize the gas.

[0018] Through the arrangement of the guiding groove, an air flow channel is provided outside the sputum suction port, avoiding continuous suction of the patient's skin when the sputum suction port adheres to the patient's skin surface, resulting in damage to the patient's skin and improving the safety of the sputum suction process.

[0019] Through the movable docking mechanism, the suction port and the conveying channel can be connected, and the movable docking mechanism can automatically dock during the operation of the device and automatically release when the device stops running, which is also convenient for subsequent taking and placing of the collection box.

[0020] Through the ejector rod, the blocking block can be pushed to move, opening the suction port. When the device is tilted, the ejector rod moves outwards to release the pushing effect on the blocking block, enabling the blocking block to automatically close the suction port and block the sputum to prevent its outflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structure schematic diagram of the present invention; Figure 2 is a top view structure schematic diagram of the present invention; Figure 3 is a three-dimensional structure schematic diagram of the sputum suction tube of the present invention; Figure 4 is a three-dimensional structure schematic diagram of the collection box of the present invention; Figure 5 is a partial structure schematic diagram of the base body of the present invention; Figure 6 This is the schematic diagram of the main sectional structure of the present invention; Figure 7 For the present invention Figure 6 The enlarged structure schematic diagram at position a in it; Figure 8 This is the schematic diagram of the main sectional structure of the collection box of the present invention; Figure 9 This is the schematic diagram of the side view structure of the sealing docking head of the present invention; Figure 10 This is the schematic diagram of the side sectional structure of the second disinfection chamber of the present invention.

[0022] In the figure: 1, matrix; 2, collection box; 201, protective ring; 3, sputum suction tube; 4, sputum suction port; 5, guiding groove; 6, placing groove; 7, observation window; 8, suction port; 9, sealing docking head; 10, telescopic tube; 11, first spring; 12, conveying channel; 13, first disinfection chamber; 14, radiation sterilizer; 15, pumping tube; 16, suction pump; 17, second disinfection chamber; 18, guiding tube; 19, air outlet; 20, liquid discharge port; 21, communicating groove; 22, sealing cover; 23, tilt sensor; 24, blocking block; 25, second spring; 26, elastic connection pad; 27, ejector rod; 28, connecting block; 29, driving block; 30, third spring; 31, extrusion block; 32, magnetic connection seat; 33, fourth spring; 34, electromagnet. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1 - 10 , Embodiment 1: The present invention provides the following technical solutions: A respiratory medicine lung-clearing and sputum-draining instrument, including a matrix 1 and a collection box 2. A placing groove 6 for providing a placing space for the collection box 2 is arranged inside the matrix 1. A sputum suction tube 3 is connected above the collection box 2, and a suction port 8 is arranged on the left side of the collection box 2. The left side of the suction port 8 is connected with a movable docking mechanism, and the left side of the movable docking mechanism is connected with a conveying channel 12. A disinfection mechanism is communicated above the conveying channel 12 to disinfect the sucked gas. A pumping tube 15 and a suction pump 16 are arranged above the disinfection mechanism. The pumping tube 15 and the suction pump 16 are connected to provide air extraction control for the conveying channel 12. An automatic blocking mechanism is arranged inside the collection box 2 to block the suction port 8 to prevent sputum from flowing out when it is tilted.

[0025] The collection box 2 and the sputum suction tube 3 are disposable items. A protective ring 201 is provided inside the collection box 2, which can block sputum to a certain extent. During use, the collection box 2 is placed in the placement groove 6 to connect the suction port 8 and the delivery channel 12. Then, a suction force can be generated by the suction machine 16 to create a negative pressure inside the collection box 2, and the sputum suction tube 3 generates a suction force to suck the sputum in the patient's body. The sucked sputum will fall into the collection box 2 for storage.

[0026] Embodiment 2: On the basis of Embodiment 1, it is disclosed that a nested connection is formed between the placement groove 6 and the collection box 2, and an observation window 7 is provided on the front side of the placement groove 6 to check the collection volume of the collection box 2. The outer end of the sputum suction tube 3 is evenly provided with sputum suction ports 4, and a concave guiding groove 5 is provided on the surface of the sputum suction port 4 to guide the suction airflow. The disinfection mechanism includes a first disinfection chamber 13 and a second disinfection chamber 17. The first disinfection chamber 13 is connected to the delivery channel 12, and the gas enters the second disinfection chamber 17 along the suction and delivery tube 15 after passing through the first disinfection chamber 13. The first disinfection chamber 13 is a radiation sterilization chamber, and a radiation sterilizer 14 is provided inside the first disinfection chamber 13. The second disinfection chamber 17 is a liquid sterilization chamber, and a guiding tube 18 is provided inside the second disinfection chamber 17. An exhaust port is provided at the bottom of the guiding tube 18, and the guiding tube 18 and the suction and delivery tube 15 are interconnected. An air outlet 19 is provided above the second disinfection chamber 17, and a liquid discharge port 20 is provided below the second disinfection chamber 17. And a communication groove 21 is connected above the second disinfection chamber 17, and a sealing cover 22 is detachably connected above the communication groove 21.

[0027] During the suction process, the sucked gas first enters the first disinfection chamber 13 and is initially sterilized by the radiation sterilizer 14. Then the gas enters the second disinfection chamber 17. A disinfectant solution is placed in the second disinfection chamber 17 in advance, and the gas enters the disinfectant solution through the guiding tube 18 for secondary disinfection. The disinfected gas is discharged outward through the air outlet 19. The liquid in the second disinfection chamber 17 can be added through the communication groove 21 and discharged through the liquid discharge port 20.

[0028] Embodiment 3: On the basis of Embodiment 1, it is disclosed that the automatic plugging mechanism includes a plugging block 24, a second spring 25 and a control mechanism. The plugging block 24 is arranged inside the suction port 8, and a horizontal sliding structure is formed between the plugging block 24 and the collection box 2. The second spring 25 is arranged on the right side of the plugging block 24 to provide a left thrust for the plugging block 24, so that the plugging block 24 fits with the suction port 8. The control mechanism is arranged outside the plugging block 24 to control the movement of the plugging block 24 and the movable docking mechanism. The movable docking mechanism includes a sealing docking head 9, a telescopic tube 10 and a first spring 11. The sealing docking head 9 is arranged inside the base body 1 and forms a horizontal sliding structure with the base body 1, and the sealing docking head 9 is located on the left side of the suction port 8. The telescopic tube 10 is fixed between the sealing docking head 9 and the conveying channel 12 to connect the conveying channel 12 and the sealing docking head 9. The first spring 11 is arranged outside the sealing docking head 9 to provide a right thrust for the sealing docking head 9. The control mechanism includes an elastic connection pad 26, a push rod 27, a connecting block 28, a driving block 29, a third spring 30, a pressing block 31 and an automatic triggering mechanism. The elastic connection pad 26 is arranged outside the collection box 2 and is located below the suction port 8. The push rod 27 is arranged on the left side of the elastic connection pad 26, and the push rod 27 pushes the elastic connection pad 26 to fit with the plugging block 24. The connecting block 28 is fixed outside the sealing docking head 9. The driving blocks 29 are respectively fixed on the front side of the connecting block 28 and the left side of the push rod 27. The third spring 30 is arranged on the left side of the driving block 29 to provide a right thrust for the driving block 29. The pressing block 31 is arranged below the driving block 29, and the upper part of the pressing block 31 is designed with an inclined structure. The upward movement of the pressing block 31 pushes the driving block 29 to move to the left. The automatic triggering mechanism is arranged outside the pressing block 31 to control the movement of the pressing block 31. The automatic triggering mechanism includes an inclination sensor 23, a magnetic connection seat 32, a fourth spring 33 and an electromagnet 34. The inclination sensor 23 is installed above the base body 1 to monitor the state of the base body 1. The magnetic connection seat 32 is fixed below the pressing block 31, and a vertical sliding structure is formed between the magnetic connection seat 32 and the base body 1. The fourth spring 33 is arranged below the magnetic connection seat 32 to provide an upward thrust for the magnetic connection seat 32. The electromagnet 34 is arranged below the magnetic connection seat 32 to attract the magnetic connection seat 32.

[0029] After the collection box 2 is installed, the blocking block 24 blocks the suction port 8. When the device is powered on during suction, the electromagnet 34 is powered on to attract the magnetic connection seat 32, driving the extrusion block 31 to move downward, releasing the extrusion of the extrusion block 31 on the driving block 29, so that the sealing adapter 9 and the suction port 8 are fitted. At the same time, the ejector rod 27 moves, and through the elastic connection pad 26, the blocking block 24 is pushed to move, opening the suction port 8 to enable normal operation of sputum aspiration. When the device is tilted or powered off, the tilt sensor 23 senses the tilt state and controls the electromagnet 34 to power off. The fourth spring 33 pushes the magnetic connection seat 32 upward, driving the extrusion block 31 to move upward. The extrusion block 31 pushes the driving block 29 to move leftward, driving the ejector rod 27 and the sealing adapter 9 to move leftward, disengaging the connection between the sealing adapter 9 and the suction port 8. At the same time, the ejector rod 27 disengages from the extrusion of the blocking block 24, and the blocking block 24 blocks the suction port 8 under the action of the second spring 25 to prevent sputum from flowing out.

[0030] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sputum clearing and discharging instrument for the department of respiratory medicine, comprising a base body (1) and a collection box (2); It is characterized in that: Inside the base body (1), there is a placement groove (6) that provides a placement space for the collection box (2). A sputum suction tube (3) is connected above the collection box (2), and a suction port (8) is provided on the left side of the collection box (2). The left side of the suction port (8) is connected to a movable docking mechanism, and the left side of the movable docking mechanism is connected to a delivery channel (12). Above the delivery channel (12), there is a disinfection mechanism for disinfecting the aspirated gas. Above the disinfection mechanism, there is a pumping tube (15) and a suction machine (16). The pumping tube (15) and the suction machine (16) are connected to provide air extraction control for the delivery channel (12). Inside the collection box (2), there is an automatic blocking mechanism that blocks the suction port (8) to prevent sputum from flowing out when the collection box is tilted.

2. The sputum clearing and lung cleansing instrument for respiratory medicine according to claim 1, characterized in that: A nested connection is formed between the placement groove (6) and the collection box (2), and an observation window (7) is provided on the front side of the placement groove (6) to check the collection volume of the collection box (2).

3. The sputum-clearing and lung-clearing instrument for the department of respiratory medicine according to claim 1, wherein: The outer end of the sputum suction tube (3) is evenly provided with sputum suction ports (4), and a concave guiding groove (5) is provided on the surface of the sputum suction ports (4) to guide the suction air flow.

4. A sputum-clearing and lung-clearing instrument for respiratory medicine according to claim 1, characterized in that: The disinfection mechanism includes a first disinfection chamber (13) and a second disinfection chamber (17). The first disinfection chamber (13) is connected to the delivery channel (12), and the gas enters the second disinfection chamber (17) along the pumping tube (15) after passing through the first disinfection chamber (13).

5. The respiratory medicine lung-clearing and phlegm-discharging instrument according to claim 4, characterized in that: The first disinfection chamber (13) is a radiation sterilization chamber, and a radiation sterilizer (14) is provided inside the first disinfection chamber (13). The second disinfection chamber (17) is a liquid sterilization chamber, and a guiding tube (18) is provided inside the second disinfection chamber (17). An exhaust port is provided at the bottom of the guiding tube (18), and the guiding tube (18) is in communication with the pumping tube (15).

6. The a respiratory medicine lung-clearing and phlegm-eliminating instrument according to claim 5, characterized in that: An air outlet (19) is provided above the second disinfection chamber (17), a liquid discharge port (20) is provided below the second disinfection chamber (17), and a communication groove (21) is connected above the second disinfection chamber (17). A sealing cover (22) is detachably connected above the communication groove (21).

7. A kind of respiratory medicine lung-clearing and phlegm-eliminating instrument according to claim 1, characterized in that: The automatic blocking mechanism includes a blocking block (24), a second spring (25), and a control mechanism; The blocking block (24) is arranged inside the suction port (8), and a horizontal sliding structure is formed between the blocking block (24) and the collection box (2); The second spring (25) is arranged on the right side of the blocking block (24) to provide a left thrust for the blocking block (24) so that the blocking block (24) fits with the suction port (8); The control mechanism is arranged outside the blocking block (24) to control the movement of the blocking block (24) and the movable docking mechanism.

8. The a respiratory medicine lung-clearing and phlegm-discharging instrument according to claim 7, characterized in that: The movable docking mechanism includes a sealing docking head (9), a telescopic tube (10), and a first spring (11); The sealing docking head (9) is arranged inside the base body (1) and forms a horizontal sliding structure with the base body (1), and the sealing docking head (9) is located on the left side of the suction port (8); The telescopic pipe (10) is fixed between the sealed docking head (9) and the conveying channel (12) to connect the conveying channel (12) and the sealed docking head (9). The first spring (11) is arranged outside the sealed docking head (9) to provide a right thrust for the sealed docking head (9).

9. The a kind of respiratory medicine lung-clearing and phlegm-eliminating instrument according to claim 8, wherein: The control mechanism includes an elastic connecting pad (26), a push rod (27), a connecting block (28), a driving block (29), a third spring (30), a pressing block (31) and an automatic triggering mechanism. The elastic connecting pad (26) is arranged outside the collection box (2), and the elastic connecting pad (26) is located below the suction port (8). The push rod (27) is arranged on the left side of the elastic connecting pad (26), and the push rod (27) pushes the elastic connecting pad (26) and the plugging block (24) to fit together to the right. The connecting block (28) is fixed outside the sealed docking head (9). The driving blocks (29) are respectively fixed on the front side of the connecting block (28) and the left side of the push rod (27). The third spring (30) is arranged on the left side of the driving block (29) to provide a right thrust for the driving block (29). The pressing block (31) is arranged below the driving block (29), and the upper part of the pressing block (31) is designed with an inclined structure. The upward movement of the pressing block (31) pushes the driving block (29) to move to the left. The automatic triggering mechanism is arranged outside the pressing block (31) to control the movement of the pressing block (31).

10. A sputum-clearing and lung-clearing instrument for respiratory medicine according to claim 9, characterized in that: The automatic triggering mechanism includes an inclination sensor (23), a magnetic connecting seat (32), a fourth spring (33) and an electromagnet (34). The inclination sensor (23) is installed above the base body (1) to monitor the state of the base body (1). The magnetic connecting seat (32) is fixed below the pressing block (31), and a vertical sliding structure is formed between the magnetic connecting seat (32) and the base body (1). The fourth spring (33) is arranged below the magnetic connecting seat (32) to provide an upward thrust for the magnetic connecting seat (32). The electromagnet (34) is arranged below the magnetic connecting seat (32) to attract the magnetic connecting seat (32).

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