A dental handpiece main unit

Abstract

The utility model discloses a kind of host computers for dental handpiece, including gas supply system, water supply system and docking system, water supply system at least includes the water supply pipe for giving docking system water supply, gas supply system includes first gas supply pipe, second gas supply pipe, solenoid valve, three-way piece and air pump, the air inlet end of air pump is connected with air inlet pipe, the air outlet end of air pump is connected with the first pass of three-way piece, the second pass and third pass of three-way piece are connected with the first end of first gas supply pipe and second gas supply pipe respectively, the second end of first gas supply pipe is connected with docking system, the second end of second gas supply pipe is connected with solenoid valve first and then connected with docking system again.The utility model's gas supply system only sets up an air pump, but can simultaneously realize the separate supply of two kinds of gas of atomization gas and cooling gas, in combination with the water supply of water supply system, three-way gas-liquid can be supplied to docking system, through docking system and dental handpiece docking, with the advantages of low manufacturing cost, control is convenient, small space occupation etc.

Description

Technical Field

[0001] This utility model relates to the field of dental equipment technology, and in particular to a main unit for a dental handpiece. Background Technology

[0002] Dental medical instruments refer to various small tools specifically designed for use in dentistry. Internationally, they are called dental instruments and include surgical instruments such as dental handpieces, extraction forceps, dental elevators, and dental excavators, as well as manual dental instruments, dental docking systems, and root canal instruments.

[0003] To provide power, water, and air to dental handpieces, existing dental handpiece systems generally include a main unit, also called an electric motor, which mainly consists of a housing, control circuit board, motor, water supply system, air supply system, and lighting system. The operation of a dental handpiece is primarily driven by the motor, which moves the grinding head or bur to perform drilling, milling, grinding, polishing, and root canal treatments.

[0004] Existing dental handpiece main unit air supply systems generally include air pumps and air lines. The air supply system generally only serves the function of providing cooling gas to the motor. If the function of providing atomizing gas to the dental handpiece is to be realized, a corresponding air pump and air lines need to be added. As a result, the existing air supply system that provides both atomizing and cooling gas functions needs to include at least two air pumps and two air lines, which is not only costly, but also has many components and occupies a lot of space. Utility Model Content

[0005] The purpose of this invention is to provide a dental handpiece host and a dental handpiece system using the same, which can at least solve some of the problems in the prior art.

[0006] To achieve this objective, the present invention adopts the following technical solution: This utility model discloses a main unit for a dental handpiece, including an air supply system, a water supply system, and a docking system. The water supply system includes at least a water supply pipe for supplying water to the docking system. The air supply system includes a first air supply pipe, a second air supply pipe, a solenoid valve, a three-way valve, and an air pump. The air pump's inlet end is connected to an air inlet pipe, and the air pump's outlet end is connected to the first port of the three-way valve. The second and third ports of the three-way valve are respectively connected to the first ends of the first and second air supply pipes. The second end of the first air supply pipe is connected to the docking system, and the second end of the second air supply pipe is first connected to the solenoid valve and then to the docking system. The docking system is detachably connected to the dental handpiece.

[0007] In some embodiments, the docking system includes a first motor, a handle, a sleeve, a first connector and a second connector. The handle is fitted around the periphery of the first connector. A first air supply pipe, a second air supply pipe and a water supply pipe pass through the handle and are connected to the first connector. The first motor is fixedly connected to the second connector and is located between the first connector and the second connector. The sleeve is fitted around the periphery of the first motor and the second connector and is connected to the handle.

[0008] In some embodiments, the docking system further includes a first connecting pipe and a second connecting pipe. The first connecting pipe is provided with a first interface connected to a first air supply pipe, a second interface connected to a second air supply pipe, and a third interface connected to a water supply pipe. The second connecting pipe has a first channel and a second channel formed inside. The first end of the first connecting pipe is connected to the second interface, and the second end is connected to the first channel. The first end of the second connecting pipe is connected to the third interface, and the second end is connected to the second channel.

[0009] In some embodiments, the docking system further includes a sealing ring, and the end of the second connector away from the first motor is formed with a guide post that mates with a dental handpiece. The center of the guide post is provided with a central through hole that can accommodate the output shaft of the first motor. Part of the first channel and part of the second channel are located inside the guide post. The surface of the guide post is provided with an air outlet connected to the first channel and a second water outlet connected to the second channel. Multiple sealing rings are arranged sequentially at intervals along the length of the guide post. A pair of sealing rings located on both sides of the second water outlet cooperate with the dental handpiece to form an annular water channel, and a pair of sealing rings located on both sides of the air outlet cooperate with the dental handpiece to form an annular air channel.

[0010] In some embodiments, the docking system further includes a third connecting pipe and a lighting lamp. The lighting lamp is installed on the second connector, and the connecting wire of the lighting lamp passes through the third connecting pipe. The outer wall of the first motor is provided with a first clearance groove, a second clearance groove, and a third clearance groove that cooperate with the first connecting pipe, the second connecting pipe, and the third connecting pipe.

[0011] In some embodiments, the first connector is provided with a first terminal block and a second terminal block, the first terminal block being used to connect the first motor to power, and the second terminal block being used to connect the lighting lamp.

[0012] In some embodiments, the docking system also includes connecting screws, and the second connector is fixedly connected to the first motor by the connecting screws.

[0013] In some embodiments, the main unit for a dental handpiece also includes a housing and a control system. An air supply system, a water supply system, and the control system are all mounted on the housing. The control system includes a control circuit board and a touch screen. The touch screen is mounted on the surface of the housing and electrically connected to the control circuit board. A solenoid valve, an air pump, a first motor, and a lighting lamp are all electrically connected to the control circuit board.

[0014] In some embodiments, the water supply system further includes a water tank and a peristaltic pump. The water tank is installed on the upper surface of the housing and is used to store water or liquid for dental handpieces. A first water outlet is provided at the bottom of the water tank. The first end of the water supply pipe is connected to the first water outlet, and the second end passes through the peristaltic pump and is connected to the docking system. The peristaltic pump is installed on the housing and cooperates with the water supply pipe.

[0015] In some embodiments, the peristaltic pump includes a second motor, a rotating wheel, a guide bar, a first clamping block, and a second clamping block. The first clamping block is fixedly mounted to the housing, the guide bar is mounted on the first clamping block, and the second clamping block is movably mounted to the housing and guided by the guide bar. A groove-shaped clamping space is formed between the first and second clamping blocks to limit the water supply pipe. The second motor is mounted inside the housing and electrically connected to the control circuit board. The second motor is driven by the rotating wheel to drive the rotating wheel to rotate. The rotating wheel cooperates with the water supply pipe in the groove-shaped clamping space. Thus, the second motor drives the rotating wheel to rotate, and the rotating wheel, like a scraper, moves water faster. The rotation of the rotating wheel squeezes the water supply pipe, causing it to deform, thereby accelerating the water flow rate in the water supply pipe to meet different supply volume requirements.

[0016] The beneficial effects of this utility model are: This invention provides a novel dental handpiece host with a unique structure. The host's air supply system uses only one air pump, yet it can simultaneously supply both atomizing gas and cooling gas. Combined with a water supply system, it can supply three gas and liquid streams to the docking system. The docking system connects to the dental handpiece, where the cooling gas cools the docking system, while the atomizing gas and water converge at the handpiece head to form an atomized spray, thus meeting the multi-functional needs of the dental handpiece. This host has advantages such as low manufacturing cost, convenient control, and small space occupation.

[0017] Equipped with a first connector and a second connector, it enables the connection of electrical circuits, water circuits and gas circuits. It not only achieves good wiring and pipe laying in a limited space with a compact structure, but also allows for good separation, and has a long service life and is safe. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the main unit and dental handpiece of the dental handpiece of this utility model; Figure 2 This is a three-dimensional structural diagram of the main unit for a dental handpiece according to this utility model; Figure 3 for Figure 1 The diagram shows a three-dimensional structure of the dental handpiece main unit with some parts omitted. Figure 4 for Figure 3 The diagram shown is a structural schematic of the dental handpiece main unit with some parts omitted. Figure 5 This is a three-dimensional structural diagram of the docking system of this utility model; Figure 6 for Figure 5 The diagram shows a partial exploded structure of the docking system. Figure 7 for Figure 5 The diagram shows a three-dimensional structure of the docking system after omitting some structural elements. Figure 8 This is a three-dimensional structural diagram of the first motor of this utility model; Figure 9 This is a perspective view of the second connector portion of the docking system of this utility model; Figure 10 This is a simplified circuit diagram of the main unit for the dental handpiece of this utility model.

[0019] Wherein: 100-Main unit; 200-Dental handpiece; 1-House; 2-Control system; 3-Air supply system; 4-Water supply system; 5-Connection system; 201-Control circuit board; 202-Touch display screen; 203-Control switch; 204-Power socket; 301-First air supply pipe; 302-Second air supply pipe; 303-Solenoid valve; 304-T-fitting fitting; 305-Air pump; 306-Air inlet; 307-Air outlet; 401-Water tank; 402-Peristaltic pump; 403-Water supply pipe; 501-First motor; 502-Handle; 503-Sleeve; 504-First connector; 505-Second connector; 506-First connecting pipe; 507-Second connecting pipe; 508-Third connecting pipe; 509-Sealing ring; 501a-The 501b - Second clearance groove; 501c - Third clearance groove; 501d - Output shaft; 5010 - Lighting lamp; 5011 - Connecting screw; 4011 - First water outlet; 4021 - Second motor; 4022 - Guide bar; 4023 - First clamping block; 4024 - Second clamping block; 4025 - Groove clamping space; 5041 - First interface; 5042 - Second interface; 5043 - Third interface; 5044 - First terminal block; 5045 - Second terminal block; 5051 - Guide post; 5052 - First channel; 5053 - Second channel; 5051a - Center through hole; 5051b - Second water outlet; 5051c - Air outlet; 5051d - Annular water channel; 5051e - Annular air channel. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] refer to Figures 1 to 10 The illustration discloses a dental handpiece host of one embodiment of the present invention.

[0022] Specifically, the main unit of the dental handpiece includes an air supply system 3, a water supply system 4, and a docking system 5. The water supply system 4 includes at least a water supply pipe 403 for supplying water to the docking system 5. The air supply system 3 includes a first air supply pipe 301, a second air supply pipe 302, a solenoid valve 303, a three-way connector 304, and an air pump 305. The air pump 305 has an air inlet pipe connected to its air inlet end 306 and an air outlet 307 connected to the first port of the three-way connector 304. The second and third ports of the three-way connector 304 are respectively connected to the first ends of the first air supply pipe 301 and the second air supply pipe 302. The second end of the first air supply pipe 301 is connected to the docking system 5. The second end of the second air supply pipe 302 is first connected to the solenoid valve 303 and then connected to the docking system 5. The docking system 5 is detachably connected to the dental handpiece 200.

[0023] This embodiment includes a three-way valve 304 and a solenoid valve 303. The solenoid valve 303 can be controlled to open and close according to actual needs, thereby opening and closing the atomizing gas supply pipeline and regulating the flow rate. It can at least meet the needs of supplying cooling gas alone and supplying cooling gas and atomizing gas simultaneously.

[0024] In this embodiment, the docking system 5 includes a first motor 501, a handle 502, a sleeve 503, a first connector 504, and a second connector 505. The handle 502 is fitted around the outer periphery of the first connector 504. The first air supply pipe 301, the second air supply pipe 302, and the water supply pipe 403 pass through the handle 502 and are connected to the first connector 504. The first motor 501 is fixedly connected to the second connector 505 and is located between the first connector 504 and the second connector 505. The sleeve 503 is fitted around the outer periphery of the first motor 501 and the second connector 505 and is connected to the handle 502.

[0025] In this embodiment, the docking system 5 further includes a first connecting pipe 506 and a second connecting pipe 507. The first connector 504 is provided with a first interface 5041 connected to the first air supply pipe 301, a second interface 5042 connected to the second air supply pipe 302, and a third interface 5043 connected to the water supply pipe 403. The second connector 505 has a first channel 5052 and a second channel 5053 formed inside. The first end of the first connecting pipe 506 is connected to the second interface 5042, and the second end is connected to the first channel 5052. The first end of the second connecting pipe 507 is connected to the third interface 5043, and the second end is connected to the second channel 5053.

[0026] In this embodiment, the docking system 5 also includes a sealing ring 509. The end of the second connector 505 away from the first motor 501 is formed with a guide post 5051 that cooperates with the dental handpiece 200. The center of the guide post 5051 is provided with a central through hole 5051a that can accommodate the output shaft 501d of the first motor 501. Part of the first channel 5052 and part of the second channel 5053 are located inside the guide post 5051. The surface of the guide post 5051 is provided with a second water outlet 5051b connected to the first channel 5052 and an air outlet 5051c connected to the second channel 5053. Multiple sealing rings 509 are arranged sequentially at intervals along the length of the guide post 5051. A pair of sealing rings 509 located on both sides of the second water outlet 5051b are sealed and fitted with the dental handpiece 200 to form an annular water channel 5051d. A pair of sealing rings 509 located on both sides of the air outlet 5051c are sealed and fitted with the dental handpiece 200 to form an annular air channel 5051e.

[0027] Preferably, there are three sealing rings 509. The three sealing rings 509 are sealed and cooperate with the inner wall of the dental handpiece 200 to form an annular water passage 5051d and an annular air passage 5051e. Then, in conjunction with the water passage and air passage of the dental handpiece 200, the atomized gas and water are delivered to the handpiece head.

[0028] As a further preferred option, the sealing ring 509 is a silicone sealing ring 509.

[0029] In this embodiment, the docking system 5 also includes a lighting lamp 5010 and a third connecting pipe 508. The lighting lamp 5010 is installed on the second connector 505, and the connecting wire of the lighting lamp 5010 passes through the third connecting pipe 508. The outer wall of the first motor 501 is provided with a first clearance groove 501a, a second clearance groove 501b and a third clearance groove 501c that cooperate with the first connecting pipe 506, the second connecting pipe 507 and the third connecting pipe 508.

[0030] In this embodiment, the first connector 504 is provided with a first terminal block 5044 and a second terminal block 5045. The first end of the first terminal block 5044 is connected to the control circuit board 201, and the second end is connected to the power wire of the first motor 501. The first terminal block 5044 is used to power the first motor 501. The first end of the second terminal block 5045 is connected to the control circuit board 201, and the second end is connected to the power wire of the lighting lamp 5010. The second terminal block 5045 is used to wire the lighting lamp 5010.

[0031] Preferably, there are three first terminals 5044 and two second terminals 5045.

[0032] The third connecting pipe 508 is provided to protect the wires between the lighting lamp 5010 and the second terminal 5045, and serves to extend their service life.

[0033] In this embodiment, the docking system 5 also includes a connecting screw 5011, and the second connector 505 is fixedly connected to the first motor 501 by the connecting screw 5011.

[0034] In this embodiment, the dental handpiece host 100 also includes a housing 1 and a control system 2. The air supply system 3, the water supply system 4 and the control system 2 are all installed on the housing 1. The control system 2 includes a control circuit board 201 and a touch screen 202. The touch screen 202 is installed on the surface of the housing 1 and is electrically connected to the control circuit board 201. The solenoid valve 303, the air pump 305, the first motor 501 and the lighting lamp 5010 are all electrically connected to the control circuit board 201.

[0035] In this embodiment, the water supply system 4 also includes a water tank 401 and a peristaltic pump 402. The water tank 401 is installed on the upper surface of the housing 1 and is used to store water or liquid for the dental handpiece 200. A water outlet 4011 is provided at the bottom of the water tank 401. The first end of the water supply pipe 403 is connected to the water outlet 4011, and the second end passes through the peristaltic pump 402 and is connected to the docking system 5. The peristaltic pump 402 is installed on the housing 1 and cooperates with the water supply pipe 403.

[0036] In this embodiment, the peristaltic pump 402 adopts the prior art. The peristaltic pump 402 includes a second motor 4021, a rotating wheel, a guide bar 4022, a first clamping block 4023 and a second clamping block 4024. The first clamping block 4023 is fixedly installed on the housing 1, the guide bar 4022 is installed on the first clamping block 4023, and the second clamping block 4024 is movably installed on the housing 1 and guided by the guide bar 4022. A groove-shaped clamping space 4025 is formed between the first clamping block 4023 and the second clamping block 4024 to limit the water supply pipe 403. The second motor 4021 is installed in the housing 1 and electrically connected to the control circuit board 201. The second motor 4021 is connected to the rotating wheel for driving the rotating wheel to rotate. The rotating wheel cooperates with the water supply pipe 403 in the groove-shaped clamping space 4025. Therefore, the second motor 4021 drives the rotating wheel to rotate. The rotating wheel is like a squeegee scraping water. The faster the speed, the faster the water flows. The rotation of the rotating wheel will squeeze the water supply pipe 403, causing the water supply pipe 403 to deform, thereby accelerating the flow rate of water in the water supply pipe 403 to meet the needs of different supply volumes.

[0037] The working principle of the dental handpiece main unit 100 of this utility model is as follows: A. Water circuit: Water is stored in the water tank 401 and flows out through the first water outlet 4011 to the water supply pipe 403. The water supply pipe 403 controls the flow rate and flow rate through the peristaltic pump 402. Finally, it is transported to the dental handpiece 200 through the third interface 5043, the second connecting pipe 507, the second channel 5053, and the second water outlet 5051b in sequence. Then, it is transported to the head of the dental handpiece 200 through the water circuit inside the dental handpiece 200. B. Atomizing gas path: When the air pump 305 is working, it draws in air from the air inlet 306 and outputs the air from the air outlet 307 to the second air supply pipe 302. The second air supply pipe 302 controls the flow rate through the solenoid valve 303. Finally, the air is delivered to the dental handpiece 200 through the second interface 5042, the first connecting pipe 506, the first channel 5052, and the air outlet 5051c in sequence. Then, it is delivered to the head of the dental handpiece through the air passage inside the dental handpiece 200. At the head of the dental handpiece, the air path and the water path can be combined. Finally, the atomized gas is sprayed out from the nozzle at the bottom of the head. C. Cooling air path: When the air pump 305 is working, it draws in air from the air inlet 306 and outputs the air from the air outlet 307 to the first air supply pipe 301, and then connects to the first interface 5041. The gas is blown out from the end of the first interface 5041 and transported along the outer wall of the first motor 501. Finally, it flows out from the central through hole 5051a of the guide post 5051. In this way, the heat generated by the first motor 501 can be carried away, achieving the effect of cooling the first motor 501.

[0038] The advantages of the dental handpiece main unit 100 of this utility model compared with the prior art are: This utility model provides a novel dental handpiece host 100. The air supply system 3 of the host 100 only has one air pump 305, yet it can simultaneously supply atomizing gas and cooling gas separately. Combined with the water supply system 4, it can supply three gas and liquid streams to the docking system 5. The docking system 5 connects to the dental handpiece 200, and the cooling gas cools the docking system 5. The atomizing gas and water can converge at the head of the dental handpiece 200 to form an atomized spray, thus meeting the multi-functional needs of the dental handpiece 200. This host 100 has advantages such as low manufacturing cost, convenient control, and small space occupation.

[0039] Equipped with a first connector 504 and a second connector 505, it enables the connection of electrical circuits, water circuits, and gas circuits. It not only achieves good wiring and pipe laying in a limited space with a compact structure, but also allows for good separation, resulting in a long service life and safety.

[0040] The above description only discloses some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A main unit for a dental handpiece, characterized in that, The system includes a gas supply system (3), a water supply system (4), and a docking system (5). The water supply system (4) includes at least a water supply pipe (403) for supplying water to the docking system (5). The gas supply system (3) includes a first gas supply pipe (301), a second gas supply pipe (302), a solenoid valve (303), a three-way valve (304), and a gas pump (305). The gas pump (305) has an air inlet end (306) connected to an air inlet pipe, and an air outlet end (307) connected to... The first port of the three-way connector (304) is connected, the second port and the third port of the three-way connector (304) are respectively connected to the first end of the first air supply pipe (301) and the second air supply pipe (302), the second end of the first air supply pipe (301) is connected to the docking system (5), the second end of the second air supply pipe (302) is first connected to the solenoid valve (303) and then connected to the docking system (5), and the docking system (5) is detachably connected to the dental handpiece (200).

2. The main unit for a dental handpiece according to claim 1, characterized in that, The docking system (5) includes a first motor (501), a handle (502), a sleeve (503), a first connector (504), and a second connector (505). The handle (502) is fitted around the outer periphery of the first connector (504). The first air supply pipe (301), the second air supply pipe (302), and the water supply pipe (403) pass through the handle (502) and are connected to the first connector (504). The first motor (501) is fixedly connected to the second connector (505) and is located between the first connector (504) and the second connector (505). The sleeve (503) is fitted around the outer periphery of the first motor (501) and the second connector (505) and is connected to the handle (502).

3. The main unit for a dental handpiece according to claim 2, characterized in that, The docking system (5) further includes a first connecting pipe (506) and a second connecting pipe (507). The first connector (504) is provided with a first interface (5041) connected to the first air supply pipe (301), a second interface (5042) connected to the second air supply pipe (302), and a third interface (5043) connected to the water supply pipe (403). The second connector (505) has a first channel (5052) and a second channel (5053) formed inside. The first end of the first connecting pipe (506) is connected to the second interface (5042), and the second end is connected to the first channel (5052). The first end of the second connecting pipe (507) is connected to the third interface (5043), and the second end is connected to the second channel (5053).

4. The main unit for a dental handpiece according to claim 3, characterized in that, The docking system (5) also includes a sealing ring (509). The second connector (505) has a guide post (5051) at one end away from the first motor (501) that cooperates with the dental handpiece (200). The center of the guide post (5051) has a central through hole (5051a) that can accommodate the output shaft (501d) of the first motor (501). Part of the first channel (5052) and part of the second channel (5053) are located inside the guide post (5051). The surface of the guide post (5051) is provided with a second water outlet (5051b) connected to the first channel (5052) and an air outlet (5051c) connected to the second channel (5053). The sealing rings (509) are multiple and are arranged at intervals along the length of the guide post (5051). A pair of sealing rings (509) located on both sides of the second water outlet (5051b) are sealed with the dental handpiece (200) to form an annular water channel (5051d). A pair of sealing rings (509) located on both sides of the air outlet (5051c) are sealed with the dental handpiece (200) to form an annular air channel (5051e).

5. The main unit for a dental handpiece according to claim 4, characterized in that, The docking system (5) further includes a third connecting pipe (508) and a lighting lamp (5010). The lighting lamp (5010) is installed on the second connector (505). The connecting wire of the lighting lamp (5010) passes through the third connecting pipe (508). The outer wall of the first motor (501) is provided with a first clearance groove (501a), a second clearance groove (501b) and a third clearance groove (501c) that cooperate with the first connecting pipe (506), the second connecting pipe (507) and the third connecting pipe (508).

6. The main unit for a dental handpiece according to claim 5, characterized in that, The first connector (504) is provided with a first terminal (5044) and a second terminal (5045). The first terminal (5044) is used to connect the first motor (501) to power, and the second terminal (5045) is used to connect the lighting lamp (5010).

7. The main unit for a dental handpiece according to claim 6, characterized in that, The docking system (5) also includes a connecting screw (5011), and the second connector (505) is fixedly connected to the first motor (501) by the connecting screw (5011).

8. The main unit for a dental handpiece according to any one of claims 5-7, characterized in that, It also includes a housing (1) and a control system (2). The air supply system (3), the water supply system (4) and the control system (2) are all installed on the housing (1). The control system (2) includes a control circuit board (201) and a touch screen (202). The touch screen (202) is installed on the surface of the housing (1) and electrically connected to the control circuit board (201). The solenoid valve (303), the air pump (305), the first motor (501) and the lighting lamp (5010) are all electrically connected to the control circuit board (201).

9. The main unit for a dental handpiece according to claim 8, characterized in that, The water supply system (4) also includes a water tank (401) and a peristaltic pump (402). The water tank (401) is installed on the upper surface of the housing (1) and is used to store water or liquid for the dental handpiece (200). A first water outlet (4011) is provided at the bottom of the water tank (401). The first end of the water supply pipe (403) is connected to the first water outlet (4011), and the second end passes through the peristaltic pump (402) and is connected to the docking system (5). The peristaltic pump (402) is installed on the housing (1) and cooperates with the water supply pipe (403).

10. The main unit for a dental handpiece according to claim 9, characterized in that, The peristaltic pump (402) includes a second motor (4021), a rotating wheel, a guide bar (4022), a first clamping block (4023), and a second clamping block (4024). The first clamping block (4023) is fixedly installed on the housing (1), and the guide bar (4022) is installed on the first clamping block (4023). The second clamping block (4024) is movably installed on the housing (1) and guided by the guide bar (4022). A grooved clamping space (4025) is formed between the second clamping block (4023) and the second clamping block (4024) to limit the water supply pipe (403). The second motor (4021) is installed in the housing (1) and electrically connected to the control circuit board (201). The second motor (4021) is connected to the rotating wheel for driving the rotating wheel to rotate. The rotating wheel cooperates with the water supply pipe (403) in the grooved clamping space (4025).

Images