Conveying device for paper diaper processing

Abstract

The utility model discloses a conveying device for paper diaper processing. The conveying device comprises a base, a driving mechanism, a conveying angle adjusting mechanism and an adsorption and dust removal integrated mechanism. A second conduction roller is rotationally connected to the left side between the front and rear inner walls of the base, a first conduction roller is rotationally connected to the right side between the front and rear inner walls of the base, and the outer cambered surfaces of the first conduction roller and the second conduction roller are movably sleeved with a hollow conveying belt; the driving mechanism is arranged on the rear side face of the base, and the driving mechanism and the first conduction roller and the second conduction roller are installed in a matched mode; the conveying angle adjusting mechanism is arranged at the lower end of the base; the adsorption and dust removal integrated mechanism comprises a rectangular plate, grooves, supporting rods and an air suction pipe, the supporting rods are arranged between the front inner wall and the rear inner wall of the base in a bilateral symmetry mode, the grooves are formed in the lower surface of the rectangular plate in a bilateral symmetry mode, and the interiors of the grooves are connected with the outer arc surfaces of the supporting rods in an inserted mode. And the paper diapers are prevented from being polluted in the conveying process.

Description

Technical Field

[0001] The utility model relates to the technical field of diaper production, in particular to a conveying device for diaper processing. Background Art

[0002] Diapers are a common type of sanitary product. The core key technology of diapers is the "core body". Diapers are products that can be discarded after single use. Common materials for diapers include non-woven fabric, toilet paper, fluff pulp, superabsorbent polymer, PE film, and rubber bands. According to functions, there are two types: for infants and for adults.

[0003] Currently, most diapers are produced in a pipeline manner. The produced diapers need to be transported to a centralized location for packaging through a conveying device.

[0004] Such conventional pipeline conveying lines have some problems in use. For example, for the transportation of diapers, the requirements for hygiene are relatively high. Conventional conveying pipelines are open. Although production can be carried out in a dust-free workshop, it is inevitable that foreign objects will fall on the diapers, affecting subsequent production. The frame of the conventional conveying pipeline is fixed, and the angle adjustment is very cumbersome. Therefore, we propose a conveying device for diaper processing. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the existing defects, and provide a conveying device for diaper processing, which can not only change the conveying angle but also achieve dust-free conveying, and can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A conveying device for diaper processing, including a base, a driving mechanism, a conveying angle adjustment mechanism, and an adsorption and dust removal integrated mechanism;

[0007] Base: A second conduction roller is rotatably connected to the left side between the front and rear inner walls of the base, and a first conduction roller is rotatably connected to the right side between the front and rear inner walls of the base. An outer arc surface of the first conduction roller and the second conduction roller is movably sleeved with a hollow conveyor belt;

[0008] Driving mechanism: It is arranged on the rear side of the base, and the driving mechanism is respectively cooperatively installed with the first conduction roller and the second conduction roller;

[0009] Conveying angle adjustment mechanism: It is arranged at the lower end of the base;

[0010] Adsorption and dust removal integrated mechanism: It includes a rectangular plate, grooves, support rods and suction pipes. The support rods are symmetrically arranged between the front and rear inner walls of the base on the left and right. Grooves are symmetrically opened on the lower surface of the rectangular plate on the left and right. The inside of the grooves is inserted with the outer arc surface of the support rods. Uniformly distributed suction pipes are arranged between the front and rear inner walls of the rectangular plate to prevent the diaper from being contaminated during the conveying process.

[0011] Furthermore, it also includes a single-chip microcomputer. The single-chip microcomputer is arranged on the front surface of the base, and the input end of the single-chip microcomputer is externally connected to an external power supply.

[0012] Furthermore, the adsorption and dust removal integrated mechanism also includes threaded grooves and exhaust installation components. The threaded grooves are uniformly opened on the rear side of the rectangular plate. Uniform avoidance openings are provided on the rear surface of the base. The exhaust installation components also include docking pipes, insertion sections, external threads and external installation flanges. The docking pipes are respectively inserted into the inside of the suction pipes through the insertion sections, and the external threads are all threadedly connected to the inside of the threaded grooves. The rear ends of the docking pipes are respectively externally connected to an external dust suction mechanism through the external installation flanges. The docking pipes are respectively located inside the avoidance openings to achieve the function of suction and dust removal.

[0013] Furthermore, the adsorption and dust removal integrated mechanism also includes obliquely installed plates. The obliquely installed plates are symmetrically arranged on the upper surface of the base on the front and rear. Suction ports are respectively arranged on the upper side of the outer arc surface of the suction pipes. Uniformly distributed fans are fixedly connected to the upper surfaces of the two obliquely installed plates. The input ends of the fans are electrically connected to the output end of the single-chip microcomputer. The upper-side oblique convective wind positions the diaper being conveyed to prevent it from being blown away by the diaper.

[0014] Furthermore, the driving mechanism includes a large transmission sprocket, a small transmission sprocket, a chain and a driving motor. The large transmission sprocket is fixedly connected to the rear end of the roller shaft of the first conduction roller. The rear end of the roller shaft of the second conduction roller is fixedly connected with a small transmission sprocket. The large transmission sprocket and the small transmission sprocket are connected by chain drive. A sealed box is provided at the rear end of the base. The large transmission sprocket, the small transmission sprocket and the chain are all located inside the sealed box. Uniform avoidance openings are also provided on the rear side of the sealed box. A driving motor is fixedly connected to the left side of the front surface of the base. The output shaft of the driving motor is fixedly connected to the front end of the roller shaft of the first conduction roller. The input end of the driving motor is electrically connected to the output end of the single-chip microcomputer to achieve the function of driving and conveying.

[0015] Further, the conveying angle adjusting mechanism includes a first fixed seat, a bracket, a second fixed seat, a telescopic cylinder and a third fixed seat. The first fixed seat is fixedly connected to the left side of the lower surface of the base. The temporal part of the first fixed seat is rotatably connected to the bracket through a rotating shaft. A second fixed seat is fixedly connected to the middle between the front and rear inner walls of the bracket. The telescopic cylinder is also rotatably connected to the inside of the second fixed seat through a rotating shaft. The telescopic end of the telescopic cylinder is also rotatably connected to the third fixed seat through a rotating shaft. The upper end of the third fixed seat is fixedly connected to the right side of the lower end of the base. The oil inlet of the telescopic cylinder is externally connected to an external oil pump to realize the function of adjusting the conveying angle.

[0016] Further, it also includes a horizontal sensor. The horizontal sensor is arranged on the front side of the lower surface of the base and is bidirectionally electrically connected to the single-chip microcomputer to realize the function of measuring the horizontal angle.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: The conveying device for diaper processing has the following advantages:

[0018] 1. Before the conveying operation of diaper processing is required, the device can be placed at the designated work station through the bracket. At this time, it is necessary to adjust the conveying angle of the diaper. The single-chip microcomputer is adjusted, and the horizontal sensor operates. The horizontal sensor measures the angle information of the hollow conveyor belt and returns the information to the single-chip microcomputer. At this time, the external oil pump can be adjusted to control the operation of the telescopic cylinder. The telescopic end of the telescopic cylinder extends and contracts, thereby lifting the third fixed seat, and then driving the base to change the angle with the center of the first fixed seat as the axis, and then driving the hollow conveyor belt to change the angle. The angle of the conveying line can be adjusted, which can not only solve the angle problem caused by the distribution of the hollow conveyor belt, but also change the conveying angle in real time to adapt to different conveying operations.

[0019] 2. When the conveying operation is required, the single-chip microcomputer can be adjusted at this time to drive the motor to operate. The output shaft of the driving motor rotates, and then drives the second conduction roller to rotate, and then drives the small transmission sprocket to rotate. Then, the large transmission sprocket at the rear is driven to rotate through the chain, and then drives the first conduction roller to rotate. At this time, the hollow conveyor belt operates. At this time, the single-chip microcomputer can be adjusted, and all the blowers operate at the same time. The front row of blowers and the rear row of blowers generate air blowing against each other. At this time, the external dust suction mechanism can be adjusted, and the external dust suction mechanism generates suction to suck the air above the suction pipe into the suction port. At this time, the diapers can be placed on the hollow conveyor belt in sequence. At this time, the hollow conveyor belt moves the diapers to the left. During the process of the diapers moving to the left, they are subjected to the suction force below, which will tightly suck the diapers on the conveying line. At the same time, they are subjected to two obliquely blowing air flows above, which not only realizes the positioning of the diapers, but also blows the dirt on the diapers away. The dirt will be sucked into the inside of the dust suction mechanism along with the suction force, completing the conveying operation and preventing the diapers from being contaminated during the conveying process. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the transmission angle adjusting mechanism of the present utility model;

[0022] Figure 3 is a schematic structural diagram of a part of the driving mechanism of the present utility model;

[0023] Figure 4 is a schematic partial structural diagram of the adsorption and dust removal integrated mechanism of the present utility model;

[0024] Figure 5 is a schematic structural diagram of the exhaust installation component of the present utility model.

[0025] In the figure: 1 base, 2 first conduction roller, 3 second conduction roller, 4 driving mechanism, 41 large transmission sprocket, 42 small transmission sprocket, 43 chain, 44 driving motor, 5 hollow conveyor belt, 6 transmission angle adjusting mechanism, 61 first fixed seat, 62 bracket, 63 second fixed seat, 64 telescopic cylinder, 65 third fixed seat, 7 sealing box, 8 adsorption and dust removal integrated mechanism, 81 rectangular plate, 82 groove, 83 support rod, 84 suction pipe, 85 suction port, 86 threaded groove, 87 exhaust installation component, 871 docking pipe, 872 insertion section, 873 external thread, 874 external installation flange, 88 obliquely installed plate, 89 fan, 9 single-chip microcomputer, 10 horizontal sensor. Detailed Embodiment

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-5 , this embodiment provides a technical solution: a conveying device for diaper processing, including a base 1, a driving mechanism 4, a transmission angle adjusting mechanism 6 and an adsorption and dust removal integrated mechanism 8;

[0028] Base 1: A second conduction roller 3 is rotatably connected to the left side between the front and rear inner walls of the base 1, and a first conduction roller 2 is rotatably connected to the right side between the front and rear inner walls of the base 1. An openwork conveyor belt 5 is movably sleeved on the outer arc surfaces of the first conduction roller 2 and the second conduction roller 3. It also includes a single-chip microcomputer 9, which is arranged on the front surface of the base 1. The input end of the single-chip microcomputer 9 is externally connected to an external power supply. It further includes a horizontal sensor 10, which is arranged on the front side of the lower surface of the base 1. The horizontal sensor 10 is bidirectionally electrically connected to the single-chip microcomputer 9. The diameter of the first conduction roller 2 is larger than that of the second conduction roller 3. The first conduction roller 2 and the second conduction roller 3 support the openwork conveyor belt 5, forming an independent installation space in the middle;

[0029] Drive mechanism 4: It is arranged on the rear side of the base 1. The drive mechanism 4 is respectively installed in cooperation with the first conduction roller 2 and the second conduction roller 3. The drive mechanism 4 includes a large transmission sprocket 41, a small transmission sprocket 42, a chain 43 and a drive motor 44. The large transmission sprocket 41 is fixedly connected to the rear end of the roller shaft of the first conduction roller 2. The rear end of the roller shaft of the second conduction roller 3 is fixedly connected with a small transmission sprocket 42. The large transmission sprocket 41 and the small transmission sprocket 42 are connected by a chain 43 for transmission. A sealing box 7 is provided at the rear end of the base 1. The large transmission sprocket 41, the small transmission sprocket 42 and the chain 43 are all located inside the sealing box 7. The rear side of the sealing box 7 is also provided with evenly distributed avoidance openings. A drive motor 44 is fixedly connected to the left side of the front surface of the base 1. The output shaft of the drive motor 44 is fixedly connected to the front end of the roller shaft of the first conduction roller 2. The input end of the drive motor 44 is electrically connected to the output end of the single-chip microcomputer 9. When conveying operations need to be carried out, the single-chip microcomputer 9 can be adjusted at this time. The drive motor 44 operates, and the output shaft of the drive motor 44 rotates, thereby driving the second conduction roller 3 to rotate, thereby driving the small transmission sprocket 42 to rotate, and then driving the large transmission sprocket 41 at the rear to rotate through the chain 43, thereby driving the first conduction roller 2 to rotate. At this time, the openwork conveyor belt 5 operates;

[0030] Conveyor Angle Adjusting Mechanism 6: It is arranged at the lower end of the base 1. The conveyor angle adjusting mechanism 6 includes a first fixed seat 61, a bracket 62, a second fixed seat 63, a telescopic cylinder 64 and a third fixed seat 65. The first fixed seat 61 is fixedly connected to the left side of the lower surface of the base 1. The temporal part of the first fixed seat 61 is rotatably connected to the bracket 62 through a rotating shaft. The middle part between the front and rear inner walls of the bracket 62 is fixedly connected to the second fixed seat 63. The inside of the second fixed seat 63 is also rotatably connected to the telescopic cylinder 64 through a rotating shaft. The telescopic end of the telescopic cylinder 64 is also rotatably connected to the third fixed seat 65 through a rotating shaft. The upper end of the third fixed seat 65 is fixedly connected to the right side of the lower end of the base 1. The oil inlet of the telescopic cylinder 64 is externally connected to an external oil pump. Before the conveying operation of diaper processing is required, the device can be placed at the designated working station through the bracket 62. At this time, it is necessary to adjust the conveying angle of the diaper. The control single-chip microcomputer 9 is adjusted, and the horizontal sensor 10 operates. The horizontal sensor 10 measures the angle information of the hollow conveyor belt 5 and returns the information to the single-chip microcomputer 9. At this time, the external oil pump can be adjusted to control the operation of the telescopic cylinder 64. The telescopic end of the telescopic cylinder 64 extends and contracts, thereby lifting the third fixed seat 65, and then driving the base 1 to change the angle with the center of the first fixed seat 61 as the axis, and then driving the hollow conveyor belt 5 to change the angle;

[0031] Adsorption and dust removal integrated mechanism 8: It includes a rectangular plate 81, a groove 82, a support rod 83 and an air suction pipe 84. The support rods 83 are symmetrically arranged between the front and rear inner walls of the base 1. The lower surface of the rectangular plate 81 is symmetrically provided with grooves 82 on the left and right. The inside of the groove 82 is inserted into the outer arc surface of the support rod 83. An evenly distributed air suction pipe 84 is provided between the front and rear inner walls of the rectangular plate 81. The adsorption and dust removal integrated mechanism 8 further includes a threaded groove 86 and an exhaust installation component 87. The threaded grooves 86 are evenly opened on the rear side of the rectangular plate 81. The rear surface of the base 1 is provided with evenly distributed avoidance openings. The exhaust installation component 87 further includes a butt joint pipe 871, an insertion section 872, an external thread 873 and an external connection installation flange 874. The butt joint pipes 871 are respectively inserted into the inside of the air suction pipes 84 through the insertion sections 872. The external threads 873 are all threadedly connected to the inside of the threaded grooves 86. The rear ends of the butt joint pipes 871 are respectively externally connected to an external dust suction mechanism through the external connection installation flanges 874. The butt joint pipes 871 are respectively located inside the avoidance openings. The adsorption and dust removal integrated mechanism 8 further includes an obliquely installed plate 88. The obliquely installed plates 88 are symmetrically arranged on the upper surface of the base 1 in the front and rear. The upper sides of the outer arc surfaces of the air suction pipes 84 are respectively provided with air suction ports 85. The upper surfaces of the two obliquely installed plates 88 are both fixedly connected with evenly distributed fans 89. The input ends of the fans 89 are electrically connected to the output end of the single-chip microcomputer 9. The rectangular plate 81 is located in the installation space. At this time, the single-chip microcomputer 9 can be adjusted. All the fans 89 operate simultaneously. The front row of fans 89 and the rear row of fans 89 generate blowing air in opposite directions. At this time, the external dust suction mechanism can be adjusted. The external dust suction mechanism generates suction force, sucks the air above the air suction pipe 84 through the air suction ports 85. At this time, the diapers can be placed on the hollow conveyor belt 5 in sequence. At this time, the hollow conveyor belt 5 moves the diapers to the left. During the process of the diapers moving to the left, they are subjected to the suction force below, and the diapers will be tightly sucked on the conveyor line. At the same time, they are subjected to two obliquely blowing air currents above, which not only realizes the positioning of the diapers, but also can blow the dirt on the diapers away. The dirt will be sucked into the inside of the dust suction mechanism along with the suction force, completing the dust-free conveying operation.

[0032] The working principle of a conveying device for diaper processing provided by the present utility model is as follows: Before the conveying operation for diaper processing is required, the device can be placed at the designated work station through the support 62. At this time, it is necessary to adjust the conveying angle of the diaper. The single-chip microcomputer 9 is adjusted, and the horizontal sensor 10 operates. The horizontal sensor 10 measures the angle information of the hollow conveyor belt 5 and returns the information to the single-chip microcomputer 9. At this time, the external oil pump can be adjusted to control the operation of the telescopic cylinder 64. The telescopic end of the telescopic cylinder 64 extends and contracts, thereby lifting the third fixed seat 65, and then driving the base 1 to change the angle around the center of the first fixed seat 61, and then driving the hollow conveyor belt 5 to change the angle. When the conveying operation is required, the single-chip microcomputer 9 can be adjusted at this time to drive the driving motor 44 to operate. The output shaft of the driving motor 44 rotates, and then drives the second conduction roller 3 to rotate, and then drives the small transmission sprocket 42 to rotate. Then, the large transmission sprocket 41 at the rear is driven to rotate through the chain 43, and then drives the first conduction roller 2 to rotate. At this time, the hollow conveyor belt 5 operates. At this time, the single-chip microcomputer 9 can be adjusted, and all the blowers 89 operate simultaneously. The front row of blowers 89 and the rear row of blowers 89 generate blowing air in opposite directions. At this time, the external dust suction mechanism can be adjusted, and the external dust suction mechanism generates suction, sucking the air above the suction pipe 84 into the suction port 85. At this time, the diapers can be placed on the hollow conveyor belt 5 in sequence. At this time, the hollow conveyor belt 5 moves the diapers to the left. During the process of the diapers moving to the left, they are subjected to the suction force below, which will tightly suck the diapers onto the conveying line. At the same time, they are subjected to two oblique blowing airflows above, which not only realizes the positioning of the diapers but also blows away the dirt on the diapers. The dirt will be sucked into the interior of the dust suction mechanism along with the suction force, completing the dust-free conveying operation.

[0033] It should be noted that the single-chip microcomputer 9 disclosed in the above embodiments has a specific model of S7-200, and the driving motor 44, telescopic cylinder 64, blower 89, and horizontal sensor 10 can be freely configured according to the actual application scenario. It is recommended to select the 24BYJ48 automatic conveyor belt reduction motor for the driving motor 44, the hsgk standard engineering oil cylinder for the telescopic cylinder 64, the YC2008 industrial micro centrifugal fan for the blower 89, and the RL-07 digital level for the horizontal sensor 10. The single-chip microcomputer 9 controls the driving motor 44, blower 89, and horizontal sensor 10 to work using the commonly used methods in the existing technology.

[0034] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.

Claims

1. A conveying device for diaper processing, characterized in that: It comprises a base (1), a driving mechanism (4), a transmission angle adjustment mechanism (6) and an integrated adsorption and dust removal mechanism (8); The base (1) has a second conductive roller (3) rotatably connected to the left side between the front and rear inner walls, and a first conductive roller (2) rotatably connected to the right side between the front and rear inner walls of the base (1), and a hollow conveyor belt (5) is movably sleeved on the outer arc surfaces of the first conductive roller (2) and the second conductive roller (3); A driving mechanism (4): the driving mechanism (4) is arranged on the rear side of the base (1), and the driving mechanism (4) is respectively installed in cooperation with the first conductive roller (2) and the second conductive roller (3); A transmission angle adjustment mechanism (6) is arranged at the lower end of the base (1); The integrated adsorption and dust removal mechanism (8) comprises a rectangular plate (81), a groove (82), a support rod (83) and an air suction pipe (84), wherein the support rod (83) is symmetrically arranged between the front and rear inner walls of the base (1), the lower surface of the rectangular plate (81) is symmetrically provided with a groove (82), the interior of the groove (82) is plugged into the outer arc surface of the support rod (83), and the air suction pipe (84) is evenly distributed between the front and rear inner walls of the rectangular plate (81).

2. A conveying device for diaper processing according to claim 1, characterized in that: It also includes a single-chip microcomputer (9), which is arranged on the front surface of the base (1), and the input end of the single-chip microcomputer (9) is externally connected to an external power supply.

3. A conveying device for diaper processing according to claim 2, characterized in that: The integrated adsorption and dust removal mechanism (8) further comprises a threaded groove (86) and an exhaust installation assembly (87), wherein the threaded groove (86) is evenly arranged on the rear side surface of the rectangular plate (81), and the rear surface of the base (1) is provided with an even avoidance opening, and the exhaust installation assembly (87) further comprises a butt joint pipe (871), an insert section (872), an external thread (873) and an external installation flange (874), wherein the butt joint pipe (871) is respectively inserted into the interior of the suction pipe (84) through the insert section (872), and the external thread (873) is connected to the internal thread of the threaded groove (86), and the rear end of the butt joint pipe (871) is respectively connected to the external dust suction mechanism through the external installation flange (874), and the butt joint pipe (871) is respectively located inside the avoidance opening.

4. A conveying device for diaper processing according to claim 2, characterized in that: The integrated adsorption and dust removal mechanism (8) also includes an oblique mounting plate (88), which is symmetrically arranged on the upper surface of the base (1) in a front-to-back manner, and an air inlet (85) is respectively arranged on the upper side of the outer arc surface of the air intake pipe (84). The upper surfaces of the two oblique mounting plates (88) are both fixedly connected with evenly distributed fans (89), and the input ends of the fans (89) are both electrically connected to the output ends of the single-chip computer (9).

5. A conveying device for diaper processing according to claim 2, characterized in that: The driving mechanism (4) comprises a large transmission sprocket (41), a small transmission sprocket (42), a chain (43) and a driving motor (44); the large transmission sprocket (41) is fixedly connected to the rear end of the roller shaft of the first conductive roller (2); the rear end of the roller shaft of the second conductive roller (3) is fixedly connected to the small transmission sprocket (42); the large transmission sprocket (41) and the small transmission sprocket (42) are connected by transmission through the chain (43); a sealing box (7) is provided at the rear end of the base (1); the large transmission sprocket (41), the small transmission sprocket (42) and the chain (43) are all located inside the sealing box (7); the rear side of the sealing box (7) is also provided with evenly distributed avoidance openings; a driving motor (44) is fixedly connected to the left side of the front surface of the base (1); the output shaft of the driving motor (44) is fixedly connected to the front end of the roller shaft of the first conductive roller (2); and the input end of the driving motor (44) is electrically connected to the output end of the single chip microcomputer (9).

6. A conveying device for diaper processing according to claim 1, characterized in that: The transmission angle adjustment mechanism (6) comprises a first fixed seat (61), a bracket (62), a second fixed seat (63), a telescopic cylinder (64) and a third fixed seat (65), wherein the first fixed seat (61) is fixedly connected to the left side of the lower surface of the base (1), the temporal portion of the first fixed seat (61) is rotatably connected to the bracket (62) via a rotating shaft, the middle portion between the front and rear inner walls of the bracket (62) is fixedly connected to the second fixed seat (63), the interior of the second fixed seat (63) is also rotatably connected to the telescopic cylinder (64) via a rotating shaft, the telescopic end of the telescopic cylinder (64) is also rotatably connected to the third fixed seat (65) via a rotating shaft, the upper end of the third fixed seat (65) is fixedly connected to the right side of the lower end of the base (1), and the oil inlet of the telescopic cylinder (64) is externally connected to an external oil pump.

7. A conveying device for diaper processing according to claim 2, characterized in that: It also comprises a level sensor (10), which is arranged on the front side of the lower surface of the base (1), and the level sensor (10) is bidirectionally electrically connected to the single-chip computer (9).

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