Dental chair pipeline cleaning and disinfecting device

Abstract

The invention relates to the technical field of medical instrument disinfection, and discloses a dental chair pipeline cleaning and disinfecting device which comprises a rack, a spray gun, winding equipment, a hose and a bent flushing assembly. The bending and flushing assembly comprises an upper pulley, a lower pulley, a bending adjusting unit, a differential mechanism unit, a feedback unit and a synchronization unit. The invention particularly provides a dental chair pipeline cleaning and disinfecting device capable of comprehensively cleaning the inner wall of a hose and visually displaying the blocking condition.

Description

Technical Field

[0001] The invention relates to the technical field of medical device disinfection, and in particular to a dental chair pipeline cleaning and disinfection device. Background Art

[0002] The dental comprehensive treatment chair is mainly composed of a patient chair, a chassis, a three-purpose gun, a saliva suction head, a high-speed handpiece, a low-speed handpiece, a shadowless lamp, etc. The three-purpose gun is connected to the chassis through a hose and can spray air, water, and mist to clean the oral cavity. The saliva suction head is connected to the chassis through a hose to absorb oral secretions.

[0003] An invention patent with application number 202410221312.9 discloses a dental chair negative pressure joint cleaning device, and specifically discloses the technical solution that "the hemispherical top cap can facilitate the insertion of the negative pressure joint and the negative pressure tube. During cleaning, water is injected into the pressurized chamber through the delivery pipe. The water in the pressurized chamber will be sprayed onto the inner wall of the negative pressure tube through a number of nozzles. The negative pressure tube and the negative pressure joint can be cleaned by the water flow, and the bristles on the rotating ring can further improve the cleaning effect."

[0004] Although the technical solution of this application can flush the negative pressure tube and the negative pressure joint, the cleaning of the negative pressure hose is not deep enough and it cannot clearly show whether the inner wall of the hose is blocked by secretions. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a dental chair pipeline cleaning and disinfection device. In order to solve the problem that the prior art does not clean the negative pressure hose deeply enough and cannot clearly show whether the inner wall of the hose is blocked by secretions, the present invention proposes a dental chair pipeline cleaning and disinfection device that can comprehensively clean the inner wall of the hose and intuitively display the blockage situation.

[0006] The technical solution adopted by the present invention is as follows: a dental chair pipeline cleaning and disinfection device, including a frame, a spray gun, a winding device, a hose and a bending and flushing assembly, wherein the bending and flushing assembly is arranged on the frame, and the bending and flushing assembly includes an upper pulley, a lower pulley, a bending adjustment unit, a differential unit, a feedback unit and a synchronization unit; The winding device is fixed on the frame, the hose passes through both sides of the winding device and is partially located in the winding device, the spray gun is connected with the hose, the upper pulley is located in front of the frame, the lower pulley is located in front of the frame, the hose is closely connected with the upper pulley, and the hose is closely connected with the lower pulley; The bending adjustment unit is used to bend the hose into a Z shape; The differential unit and the synchronization unit are used to collect and record the number of rotations of the upper pulley and the lower pulley; The feedback unit is used to indicate the blockage situation in the hose according to the difference between the number of rotations of the upper pulley and the lower pulley.

[0007] Furthermore, the bending adjustment unit is arranged on the frame, and the bending adjustment unit includes a main motor, a main connecting block, a lower spindle, an upper spindle, two limit telescopic rods and two horizontal height limit frames. The main motor is fixed on the frame, the main connecting block is fixed on the output end of the main motor, the two limit telescopic rods are fixed on the main connecting block, the two limit telescopic rods are arranged in a circular array relative to the axial direction of the main motor, and the two horizontal height limit frames are fixed on the frame, the lower spindle and the upper spindle are respectively rotatably arranged at one end of the two limit telescopic rods away from the main connecting block, the lower spindle and the upper spindle are respectively rollingly engaged in the two horizontal height limit frames, the lower pulley is fixedly connected to the lower spindle, and the upper pulley is fixedly connected to the upper spindle.

[0008] Further, the differential unit is arranged on the lower main shaft, and the differential unit includes an extension limit frame, a lower secondary shaft, a sun gear, a planetary frame, a planetary shaft and a planetary gear. The extension limit frame is fixedly arranged on a limit telescopic rod, and the lower secondary shaft is rotatably arranged in the extension limit frame. The lower secondary shaft and the lower main shaft are arranged coaxially. There are two sun gears, and the two sun gears are respectively fixed on the lower secondary shaft and the lower main shaft. The planetary frame is fixedly arranged on the lower main shaft, and the planetary shaft is rotatably arranged on the planetary frame. The planetary gear is fixedly arranged on the planetary shaft, and the two sides of the planetary gear are respectively meshed with two sun gears.

[0009] Furthermore, a pipe hole is formed through the main connection block, and the hose is connected through the pipe hole.

[0010] Furthermore, the feedback unit is arranged on the planetary frame, and the feedback unit includes a feedback bracket, an encoder, an inner magnetic ring and a lifting electromagnet. The feedback bracket is fixed on the planetary frame, the encoder is fixed on the feedback bracket, the rotating end of the encoder is fixedly connected to the planetary shaft, the lifting electromagnet is fixed on the frame, the inner magnetic ring is fitly connected to the inner wall of the hose, and there is an electromagnetic repulsion between the inner magnetic ring and the lifting electromagnet.

[0011] Furthermore, the synchronization unit is arranged between the lower secondary shaft and the upper main shaft, and the synchronization unit includes a tensioning elastic telescopic rod, a tensioning shaft, a tensioning wheel, a synchronous belt and two pulleys. The tensioning elastic telescopic rod is fixed on the main connecting block, the tensioning shaft is rotatably arranged on one end of the tensioning elastic telescopic rod, the tensioning wheel is fixed on the tensioning shaft, the two pulleys are respectively fixed on the lower secondary shaft and the upper main shaft, and the synchronous belt is sleeved on the tensioning wheel and the two pulleys.

[0012] Furthermore, the bending and flushing assembly also includes a horizontal limiting hoop, which is fixedly connected to the frame, and the hose is slidably fitted in the horizontal limiting hoop.

[0013] The beneficial effects achieved by the present invention using the above structure are as follows: 1. The hose is bent by using a spray gun, a winding device, an upper pulley, a lower pulley and a bending adjustment unit that can bend the hose into a Z shape. The disinfectant sprayed from the spray gun can increase the impact force on the inner wall of the hose at the bend after entering the hose, thereby enhancing the cleaning effect of the negative pressure hose of the dental chair.

[0014] 2. While scraping oral secretions from the inner wall of the hose, the inner magnetic ring cooperates with the hose, the upper pulley and the lower pulley. When the inner magnetic ring contacts the blocked area of ​​the hose, the hose tends to deviate upward, increasing the contact support force between the hose and the upper pulley while reducing the contact support force between the hose and the lower pulley, causing a difference in the number of rotations between the upper pulley and the lower pulley, which is transmitted to the encoder by the mechanical transmission of the differential unit, the synchronization unit and the feedback unit, and further transmitted to the external electronic control equipment, so that the staff can understand the cleaning condition of the dental chair hose in a specific and intuitive way. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of a dental chair pipeline cleaning and disinfecting device of the present invention.

[0016] Figure 2 It is a three-dimensional schematic diagram of the hose, spray gun, winding device, upper pulley, lower pulley and horizontal limit hoop of the present invention.

[0017] Figure 3 It is a three-dimensional schematic diagram of the upper pulley, the lower pulley and the bending adjustment unit of the present invention.

[0018] Figure 4 It is a cross-sectional schematic diagram of the inner magnetic ring, the upper pulley, the lower pulley and the bending adjustment unit of the present invention.

[0019] Figure 5 It is a three-dimensional schematic diagram of the differential unit and the feedback unit of the present invention.

[0020] Figure 6 It is a three-dimensional schematic diagram of the feedback unit of the present invention.

[0021] Figure 7 It is a three-dimensional schematic diagram of the differential unit of the present invention.

[0022] Figure 8 It is a three-dimensional schematic diagram of the synchronization unit of the present invention.

[0023] Among them, 1. frame, 2. hose, 3. bending and flushing assembly, 301. spray gun, 302. winding device, 303. upper pulley, 304. lower pulley, 305. horizontal limit hoop, 4. bending adjustment unit, 401. main motor, 402. main connecting block, 4021. pipe hole, 403. limit telescopic rod, 404. lower spindle, 405. upper spindle, 406. horizontal height limit frame, 5. differential unit, 501. Extension limit frame, 502. Lower secondary shaft, 503. Sun gear, 504. Planetary frame, 505. Planetary shaft, 506. Planetary gear, 6. Feedback unit, 601. Feedback bracket, 602. Encoder, 603. Inner magnetic ring, 604. Lifting electromagnet, 7. Synchronous unit, 701. Pulley, 702. Tensioning elastic telescopic rod, 703. Tensioning shaft, 704. Tensioning wheel, 705. Synchronous belt.

[0024] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] like Figure 1 to Figure 8 As shown, a dental chair pipeline cleaning and disinfection device includes a frame 1, a spray gun 301, a winding device 302, a hose 2 and a bending and flushing assembly 3. The bending and flushing assembly 3 is arranged on the frame 1. The bending and flushing assembly 3 includes an upper pulley 303, a lower pulley 304, a bending adjustment unit 4, a differential unit 5, a feedback unit 6 and a synchronization unit 7; The winding device 302 is fixed on the frame 1, the hose 2 passes through both sides of the winding device 302 and is partially located in the winding device 302, the spray gun 301 is connected with the hose 2, the upper pulley 303 is located in front of the frame 1, the lower pulley 304 is located in front of the frame 1, the hose 2 is closely connected with the upper pulley 303, and the hose 2 is closely connected with the lower pulley 304; The bending adjustment unit 4 is used to bend the hose 2 into a Z shape; The differential unit 5 and the synchronization unit 7 are used to collect and record the number of rotations of the upper pulley 303 and the lower pulley 304; The feedback unit 6 is used to indicate the blockage situation in the hose 2 according to the difference between the number of rotations of the upper pulley 303 and the lower pulley 304 .

[0028] like Figure 1 to Figure 8 As shown, the bending adjustment unit 4 is arranged on the frame 1, and the bending adjustment unit 4 includes a main motor 401, a main connecting block 402, a lower spindle 404, an upper spindle 405, two limit telescopic rods 403 and two horizontal height limit frames 406. The main motor 401 is fixedly arranged on the frame 1, the main connecting block 402 is fixedly arranged on the output end of the main motor 401, and the two limit telescopic rods 403 are fixedly arranged on the main connecting block 402. The two limit telescopic rods 403 are relatively The two horizontal height limit frames 406 are fixed on the frame 1 in a circular array in the axial direction of the main motor 401. The lower spindle 404 and the upper spindle 405 are respectively rotatably arranged on the two ends of the limiting telescopic rods 403 away from the main connecting block 402. The lower spindle 404 and the upper spindle 405 are respectively rollingly engaged in the two horizontal height limit frames 406. The lower pulley 304 is fixedly connected to the lower spindle 404, and the upper pulley 303 is fixedly connected to the upper spindle 405.

[0029] like Figure 1 to Figure 8 As shown, the differential unit 5 is arranged on the lower main shaft 404, and the differential unit 5 includes an extension limit frame 501, a lower secondary shaft 502, a sun gear 503, a planetary frame 504, a planetary shaft 505 and a planetary wheel 506. The extension limit frame 501 is fixedly arranged on a limit telescopic rod 403, the lower secondary shaft 502 is rotatably arranged in the extension limit frame 501, the lower secondary shaft 502 is coaxially arranged with the lower main shaft 404, two sun gears 503 are provided, and the two sun gears 503 are respectively fixedly arranged on the lower secondary shaft 502 and the lower main shaft 404, the planetary frame 504 is fixedly arranged on the lower main shaft 404, the planetary shaft 505 is rotatably arranged on the planetary frame 504, and the planetary wheel 506 is fixedly arranged on the planetary shaft 505, and the two sides of the planetary wheel 506 are respectively meshed and connected with the two sun gears 503.

[0030] like Figure 1 to Figure 8 As shown, a pipe hole 4021 is formed through the main connection block 402 , and the hose 2 is connected to the pipe hole 4021 through the pipe hole 4021 .

[0031] like Figure 1 to Figure 8 As shown, the feedback unit 6 is arranged on the planetary frame 504, and the feedback unit 6 includes a feedback bracket 601, an encoder 602, an inner magnetic ring 603 and a lifting electromagnet 604. The feedback bracket 601 is fixed on the planetary frame 504, the encoder 602 is fixed on the feedback bracket 601, the rotating end of the encoder 602 is fixedly connected to the planetary shaft 505, the lifting electromagnet 604 is fixed on the frame 1, the inner magnetic ring 603 is fitted and connected to the inner wall of the hose 2, and there is an electromagnetic repulsion between the inner magnetic ring 603 and the lifting electromagnet 604.

[0032] like Figure 1 to Figure 8 As shown, the synchronization unit 7 is arranged between the lower secondary shaft 502 and the upper main shaft 405, and the synchronization unit 7 includes a tensioning elastic telescopic rod 702, a tensioning shaft 703, a tensioning wheel 704, a synchronous belt 705 and two pulleys 701. The tensioning elastic telescopic rod 702 is fixedly arranged on the main connecting block 402, the tensioning shaft 703 is rotatably arranged on one end of the tensioning elastic telescopic rod 702, the tensioning wheel 704 is fixedly arranged on the tensioning shaft 703, the two pulleys 701 are respectively fixedly arranged on the lower secondary shaft 502 and the upper main shaft 405, and the synchronous belt 705 is sleeved on the tensioning wheel 704 and the two pulleys 701.

[0033] like Figure 1 to Figure 8 As shown, the bending and flushing assembly 3 also includes a horizontal limiting hoop 305 , which is fixedly connected to the frame 1 , and the hose 2 is slidably fitted in the horizontal limiting hoop 305 .

[0034] When in use, when the lifting electromagnet 604 is turned off, put the inner magnetic ring 603 into one end of the hose 2, and shake the hose 2 to make the inner magnetic ring 603 go deep into the hose 2 (to prevent the inner magnetic ring 603 from mistakenly entering the winding device 302 later). Pass one end of the hose 2 through the winding device 302 and connect it to the spray gun 301 (the spray gun 301 is pre-connected with disinfectant). Then place the other end of the hose 2 in the order of close to the upper pulley 303, through the pipe hole 4021, close to the lower pulley 304, and through the horizontal limit hoop 305. Turn on the lifting electromagnet 604, and keep the inner magnetic ring 603 in the main connection block 402 through electromagnetic repulsion.

[0035] The spray gun 301 connected to the external disinfectant continuously injects disinfectant into the hose 2, thereby flushing the hose 2. At the same time, the reeling device 302 reels the hose 2 at a uniform speed, so that the hose 2 gradually leaves the upper pulley 303 and the lower pulley 304. In this process, the inner magnetic ring 603 is kept at a height by the electromagnetic repulsion of the lifting electromagnet 604, and through the contact relationship with the inner wall of the hose 2, it directly monitors whether there is oral secretions adhering to the inner wall of the hose 2.

[0036] The principle of the inner magnetic ring 603 monitoring whether there is oral secretion adhering to the inner wall of the hose 2 is as follows: under normal conditions, the impact force of the disinfectant water flow in the hose 2, the electromagnetic repulsion of the lifting electromagnet 604 and the deadweight of the inner magnetic ring 603 are balanced. When the inner magnetic ring 603 contacts the oral secretion on the inner wall of the hose 2, the rising oral secretion has a certain support force for the inner magnetic ring 603, so that the inner magnetic ring 603 moves up a certain distance. The part of the hose 2 located in the tube hole 4021 is affected by the inner magnetic ring 603 and deviates upward, reducing the contact area and contact support force between the upper pulley 303 and the hose 2 (increasing the contact area and contact support force between the lower pulley 304 and the hose 2).

[0037] The specific working principle of the synchronization unit 7 is as follows: the hose 2 wound up by the winding device 302 drives the upper pulley 303 and the upper main shaft 405 to rotate through friction, and the pulley 701 fixed to the upper main shaft 405 drives the lower secondary shaft 502 and the pulley 701 on the lower secondary shaft 502 to rotate synchronously through the synchronous belt 705. In this process, the tensioning shaft 703 and the tensioning pulley 704 on the tensioning elastic telescopic rod 702 are used to maintain the transmission reliability between the synchronous belt 705 and the pulley 701.

[0038] The specific working principle of the differential unit 5 is as follows: the sun gear 503 on the lower main shaft 404 rotates synchronously with the lower pulley 304, and the sun gear 503 on the lower secondary shaft 502 rotates synchronously with the upper pulley 303 through the transmission of the synchronization unit 7. When the hose 2 is normally wound, the upper pulley 303 and the lower pulley 304 rotate at the same speed. At this time, the planetary shaft 505 and the planetary gear 506 rotate relative to the lower main shaft 404 only because of the fixed relationship between the planetary frame 504 and the lower main shaft 404, that is, the planetary shaft 505 performs an orbital motion; When the inner magnetic ring 603 is obstructed by the secretions and rises, the lower pulley 304 maintains close contact with the hose 2 and rotates synchronously, the upper pulley 303 loosens contact with the hose 2 and stops rotating, there is a speed difference between the upper pulley 303 and the lower pulley 304, and there is also a speed difference between the two sun gears 503. At this time, the planetary gear 506 and the planetary shaft 505 are driven by the speed difference between the two sun gears 503 and rotate relative to the planetary shaft 505 (while maintaining the orbital motion state).

[0039] In the feedback unit 6, the specific working principle of the encoder 602 is as follows: the rotating end of the encoder 602 is fixedly connected to the planetary shaft 505, and can monitor and record the rotation of the planetary shaft 505, so as to record which part of the inner wall of the hose 2 is adhered to oral secretions during the process of the spray gun 301 and the winding device 302 uniformly washing the hose 2. The staff reads the situation of "the inner wall of the hose 2 is adhered to oral secretions" from the external electric control device connected to the encoder 602 signal, and adjusts the spray gun 301 and the winding device 302 to focus on washing this part.

[0040] The specific working principle of the bending adjustment unit 4 is as follows: the staff controls the main motor 401 to rotate, thereby changing the inclination angle of the main connecting block 402, making the upper pulley 303 and the lower pulley 304 in the horizontal height limit frame 406 slide relative to each other, and adjusting the inclination angle of the hose 2 between the upper pulley 303 and the lower pulley 304 relative to the horizontal plane, so as to ensure that the contact area between the upper pulley 303 and the hose 2 is small enough (ensuring that the upper pulley 303 stops rotating with the hose 2) when the oral secretions on the inner wall of the hose 2 provide support for the inner magnetic ring 603.

[0041] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dental chair pipeline cleaning and disinfection device, characterized in that: It comprises a frame (1), a spray gun (301), a winding device (302), a hose (2) and a bending and flushing assembly (3), wherein the bending and flushing assembly (3) is arranged on the frame (1), and the bending and flushing assembly (3) comprises an upper pulley (303), a lower pulley (304), a bending adjustment unit (4), a differential unit (5), a feedback unit (6) and a synchronization unit (7); The winding device (302) is fixed on the frame (1), the hose (2) passes through both sides of the winding device (302) and is partially located inside the winding device (302), the spray gun (301) is connected to the hose (2), the upper pulley (303) is located in front of the frame (1), the lower pulley (304) is located in front of the frame (1), the hose (2) is closely connected to the upper pulley (303), and the hose (2) is closely connected to the lower pulley (304); The bending adjustment unit (4) is used to bend the hose (2) into a Z shape; The differential unit (5) and the synchronization unit (7) are used to collect and record the number of rotations of the upper pulley (303) and the lower pulley (304); The feedback unit (6) is used to indicate the blockage condition in the hose (2) according to the difference between the number of rotations of the upper pulley (303) and the lower pulley (304).

2. A dental chair pipeline cleaning and disinfecting device according to claim 1, characterized in that: The bending adjustment unit (4) is arranged on the frame (1), and comprises a main motor (401), a main connecting block (402), a lower spindle (404), an upper spindle (405), two position-limiting telescopic rods (403) and two horizontal height-limiting frames (406); the main motor (401) is fixedly arranged on the frame (1); the main connecting block (402) is fixedly arranged on the output end of the main motor (401); the two position-limiting telescopic rods (403) are fixedly arranged on the main connecting block (402); the two position-limiting telescopic rods (403) are fixedly arranged on the main connecting block (402); and the two position-limiting telescopic rods (403) are fixedly arranged on the The two horizontal height limit frames (406) are arranged in a circular array relative to the axis direction of the main motor (401), and are fixedly arranged on the frame (1). The lower spindle (404) and the upper spindle (405) are respectively rotatably arranged on one end of the two limit telescopic rods (403) away from the main connecting block (402). The lower spindle (404) and the upper spindle (405) are respectively rollingly engaged in the two horizontal height limit frames (406), the lower pulley (304) is fixedly connected to the lower spindle (404), and the upper pulley (303) is fixedly connected to the upper spindle (405).

3. A dental chair pipeline cleaning and disinfecting device according to claim 2, characterized in that: The differential unit (5) is arranged on the lower main shaft (404), and comprises an extension limit frame (501), a lower secondary shaft (502), a sun gear (503), a planetary frame (504), a planetary shaft (505) and a planetary gear (506). The extension limit frame (501) is fixedly arranged on a limit telescopic rod (403), the lower secondary shaft (502) is rotatably arranged in the extension limit frame (501), and the lower secondary shaft (502) is rotatably arranged with the lower main shaft (404). 4) Coaxial arrangement, two sun gears (503) are provided, the two sun gears (503) are respectively fixed on the lower secondary shaft (502) and the lower main shaft (404), the planetary frame (504) is fixed on the lower main shaft (404), the planetary shaft (505) is rotatably arranged on the planetary frame (504), the planetary gear (506) is fixed on the planetary shaft (505), and the two sides of the planetary gear (506) are respectively meshed and connected with the two sun gears (503).

4. A dental chair pipeline cleaning and disinfecting device according to claim 3, characterized in that: The main connection block (402) is provided with a pipe hole (4021) extending therethrough, and the hose (2) is connected to the pipe hole (4021) through the pipe hole.

5. A dental chair pipe cleaning and disinfecting device according to claim 4, characterized in that: The feedback unit (6) is arranged on the planetary frame (504), and the feedback unit (6) comprises a feedback bracket (601), an encoder (602), an inner magnetic ring (603) and a lifting electromagnet (604). The feedback bracket (601) is fixedly arranged on the planetary frame (504), the encoder (602) is fixedly arranged on the feedback bracket (601), the rotating end of the encoder (602) is fixedly connected to the planetary shaft (505), the lifting electromagnet (604) is fixedly arranged on the frame (1), the inner magnetic ring (603) is closely connected to the inner wall of the hose (2), and there is an electromagnetic repulsive force between the inner magnetic ring (603) and the lifting electromagnet (604).

6. A dental chair pipe cleaning and disinfecting device according to claim 5, characterized in that: The synchronization unit (7) is arranged between the lower secondary shaft (502) and the upper main shaft (405), and comprises a tensioning elastic telescopic rod (702), a tensioning shaft (703), a tensioning wheel (704), a synchronous belt (705) and two pulleys (701); the tensioning elastic telescopic rod (702) is fixedly arranged on the main connecting block (402); the tensioning shaft (703) is rotatably arranged on one end of the tensioning elastic telescopic rod (702); the tensioning wheel (704) is fixedly arranged on the tensioning shaft (703); the two pulleys (701) are respectively fixedly arranged on the lower secondary shaft (502) and the upper main shaft (405); and the synchronous belt (705) is sleeved on the tensioning wheel (704) and the two pulleys (701).

7. A dental chair pipeline cleaning and disinfecting device according to claim 6, characterized in that: The bending and flushing assembly (3) further comprises a horizontal limiting hoop (305), wherein the horizontal limiting hoop (305) is fixedly connected to the frame (1), and the hose (2) is slidably fitted in the horizontal limiting hoop (305).

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