Additional saliva pump for dental chair

Abstract

The utility model discloses an additional saliva pump for a dental chair, which relates to the field of saliva pumps and comprises a control box, a diaphragm pump, a transformer and a power interface are fixedly mounted in the control box, and the input end of the power interface extends to the outside of the control box and is fixedly provided with a liquid inlet pipe. The dental chair additional saliva pump is well attached to a circuit, a gas circuit and a drainage part of an original dental chair, power is supplied by the original circuit of the dental chair, a power supply switch of the dental chair additional saliva pump is controlled by a saliva pump pipe pneumatic component of the original dental chair, and the dental chair additional saliva pump is powered on and off. An original drainage pipeline of the dental chair is used, so that a weak saliva suction system of the original dental chair can be well replaced, the saliva suction device does not need to be replaced, the device only needs to be installed on an old saliva suction device, a suction head of the old saliva suction device is used for controlling the device to work, the cost is reduced, disassembly and re-wiring assembly are not needed, additional installation is directly carried out, use is convenient, and the practicability is high. The cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of saliva suction devices, in particular to a dental chair attached saliva suction device. Background Art

[0002] A saliva ejector is a commonly used device in medical treatment and daily care, mainly used to help patients or users spit out oral fluids such as saliva, water, and blood.

[0003] Dental chairs on the market are now standardly equipped with one strong and one weak saliva suction device; the strong saliva suction device is powered by the air compressor, which puts pressure on the compressor's energy consumption and wear when used for a long time, and the long-term operation of the compressor also produces noise; the weak suction device is powered by the negative pressure generated by the flow of water in the tap, which has low noise and low saliva suction force. When the tap water pressure is low, the weak saliva suction tube is difficult to use or even cannot be used.

[0004] When the installation location is on a higher floor, the water pressure will be low, or the water pressure at the clinic's location is low, which may cause the weak saliva ejector to be unusable. The clinic needs to replace the new saliva ejector as a whole. If it is not replaced, the strong saliva ejector needs to be used continuously, which will cause the compressor to work for a long time, which will not only increase the cost, but also cause the compressor to be damaged due to high-intensity work. Continuous use of the strong saliva ejector may also cause discomfort to the patient. Replacing the entire saliva ejector because the weak saliva ejector cannot be used will increase the cost and cause greater losses to the user.

[0005] Therefore, it is necessary to propose a dental chair with an additional saliva suction device to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a dental chair with an additional saliva extractor to solve the above-mentioned problems of high replacement cost and the inability to use the traditional saliva extractor when the water pressure is low.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dental chair with an additional saliva extractor, comprising a control box, a diaphragm pump, a transformer, and a power interface are fixedly installed inside the control box, the input end of the power interface extends to the outside of the control box and is fixedly installed with a liquid inlet pipe, the output end of the power interface extends to the outside of the control box and is fixedly installed with a liquid discharge pipe, a filter is installed on the liquid inlet pipe, an air pipe is fixedly connected to one side of the power interface, an air-controlled switch is fixedly installed on the air pipe, the air-controlled switch is electrically connected to the power interface, the transformer is electrically connected to the power interface, and the diaphragm pump is electrically connected to the transformer.

[0008] Preferably, the filter includes a mounting seat, a disassembly cylinder is installed above the mounting seat, first blocks are fixedly installed on both sides of the bottom end of the disassembly cylinder, an internal cartridge is fixedly installed inside the mounting seat, a first slot is provided between the internal cartridge and the mounting seat, two second slots corresponding to the first block are provided on the inner side wall of the first slot, a first spring is fixedly installed inside the first slot, a filter cartridge is provided inside the disassembly cylinder, a second valve component is rotatably installed on the lower end of the filter cartridge, a liquid outlet pipe is fixedly installed on the lower surface of the mounting seat, the liquid outlet pipe is connected to the interior of the internal cartridge, and a first valve assembly is fixedly installed inside the liquid outlet pipe.

[0009] Preferably, the first valve assembly includes a fixed ring, two second symmetrical blocks are fixedly installed on the inner lower end of the fixed ring, a rotating plate is rotatably installed on the inner upper end of the fixed ring, both sides of the rotating plate have transition grooves corresponding to the second blocks, and two symmetrical connecting sleeves are fixedly installed on the upper surface of the rotating plate.

[0010] Preferably, the second valve component includes a mounting ring, which is rotatably mounted on the inner bottom end of the mounting seat, and two mutually symmetrical first sealing plates are fixedly mounted on the upper surface of the mounting seat, and second sealing plates corresponding to the two first sealing plates are rotatably mounted inside the mounting ring, and two first connecting rods corresponding to the connecting sleeve are fixedly mounted on the lower surface of the second sealing plate.

[0011] Preferably, a center rod is fixedly installed in the middle of the upper surface of the second sealing plate, and the center rod is rotatably clamped in the middle of the first sealing plate. One end of the first sealing plate is fixedly installed inside the filter cartridge, and second connecting rods are fixedly installed on both sides of the lower surface of the mounting ring. Two third slots corresponding to the second connecting rods are opened inside the mounting seat.

[0012] Preferably, a plurality of first clamping columns are fixedly installed on the inner upper surface of the disassembly cylinder, a plurality of grooves corresponding to the first clamping columns are opened at the upper end of the filter cylinder, a button is slidably provided in the middle of the upper wall of the disassembly cylinder, one end of the button is in contact with the upper surface of the filter cylinder, and a second spring is fixedly installed between the button and the disassembly cylinder.

[0013] Preferably, the liquid inlet pipe is fixedly installed at the output end of the filter.

[0014] Preferably, a dustproof door is hinged on the control box.

[0015] Technical effects and advantages of the utility model:

[0016] The dental chair attached saliva suction device is well attached to the circuit, gas circuit and drainage part of the original dental chair, relies on the original circuit of the dental chair for power supply, uses the pneumatic parts of the saliva suction pipe of the original dental chair to control the switch of the power supply of the dental chair attached saliva suction device, and uses the original drainage pipe of the dental chair, so it can well replace the weak saliva suction system of the original dental chair. There is no need to replace the saliva suction device. Only the device needs to be installed on the old saliva suction device, and the suction head of the old saliva suction device can be used to control the operation of the device, which reduces costs. There is no need to disassemble and re-wire the wires and assemble, and it can be directly attached and installed. It is easy to use and saves costs.

[0017] The device is provided with a first valve component and a second valve component, and the disassembly cartridge can be rotated in the opposite direction after use. At this time, the second valve component and the first valve component can be controlled to be closed. The closing of the second valve component can store impurities inside the filter cartridge to prevent the internal debris from falling and scattering when the filter cartridge is taken out. The closing of the first valve component can prevent the liquid inside the liquid outlet pipe from being spilled when the filter cartridge is disassembled, causing the surrounding instruments and environment to be polluted. When the filter cartridge needs to be cleaned, it is only necessary to rotate the first connecting rod to open the second valve component and then rinse it with water.

[0018] The device is provided with a button so that when taking out a dirty filter cartridge, there is no need to press the filter cartridge by hand. The filter cartridge can be taken out by pinching the removal cylinder and pushing the button without touching the filter cartridge. Because a large number of pathogens may exist in the patient's mouth, non-contact removal can greatly protect the safety of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a structural schematic diagram of a dental chair with an additional saliva extractor.

[0020] Figure 2 It is a structural schematic diagram of the control box in the utility model.

[0021] Figure 3 It is a structural schematic diagram of the filter in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the mounting seat in the utility model.

[0023] Figure 5 It is a structural schematic diagram of the first valve component in the utility model.

[0024] Figure 6 It is a structural schematic diagram of the disassembly cylinder in the utility model.

[0025] Figure 7 It is a structural schematic diagram of the second valve component in the utility model.

[0026] Figure 8 This is a working principle diagram of the utility model.

[0027] In the figure: 1, control box; 2, diaphragm pump; 3, transformer; 4, power interface; 5, filter; 21, liquid inlet pipe; 22, liquid discharge pipe; 41, air pipe; 42, air-operated switch; 51, mounting seat; 52, disassembly cylinder; 53, first valve assembly; 54, filter cartridge; 55, second valve component; 511, internal cartridge; 512, first slot; 513, second slot; 514, first spring; 515, liquid outlet pipe; 516, third slot; 521, first cartridge; 522, button; 523, second spring; 524, first clamping block; 531, fixing ring; 532, second clamping block; 533, rotating plate; 534, connecting sleeve; 535, transition groove; 551, mounting ring; 552, first sealing plate; 553, second sealing plate; 554, first connecting rod; 555, center rod; 556, second connecting rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model provides Figure 1-Figure 8 The dental chair with an additional saliva extractor shown includes a control box 1, a dustproof door is hinged on the control box 1, a diaphragm pump 2, a transformer 3, and a power interface 4 are fixedly installed inside the control box 1, the input end of the power interface 4 extends to the outside of the control box 1 and is fixedly installed with a liquid inlet pipe 21, the output end of the power interface 4 extends to the outside of the control box 1 and is fixedly installed with a liquid discharge pipe 22, a filter 5 is installed on the liquid inlet pipe 21, and the liquid inlet pipe 21 is fixedly installed at the output end of the filter 5, an air pipe 41 is fixedly connected to one side of the power interface 4, an air-controlled switch 42 is fixedly installed on the air pipe 41, the air-controlled switch 42 is electrically connected to the power interface 4, the transformer 3 is electrically connected to the power interface 4, the diaphragm pump 2 is electrically connected to the transformer 3, the filter 5 includes a mounting seat 51, and a liquid outlet pipe 515 is fixedly installed on the lower surface of the mounting seat 51.

[0030] In actual use, the air pipe 41 is connected to the air path of the original saliva suction device, and then the power interface 4 is connected to the power supply circuit of the original saliva suction device. The power interface 4 can provide electrical energy to the diaphragm pump 2, and the transformer 3 can convert the voltage output by the power interface 4 into a voltage that can be used by the diaphragm pump 2. When gas passes through the air-controlled switch 42, the air-controlled switch 42 will be in an open state, and then the air-controlled switch 42 controls the power interface 4 to close the power supply. At this time, the transformer 3 and the diaphragm pump 2 can work. When the diaphragm pump 2 is working, the air flow and liquid inside the liquid inlet pipe 21 will be output to the discharge pipe 22 together, and the liquid outlet pipe 515 is connected to the original saliva suction device head, so that the diaphragm pump 2 can absorb the saliva through the filter 5, and then output it from the discharge pipe 22. The filter 5 can filter the absorbed saliva, and the discharge pipe 22 is connected to the drainage system of the original saliva suction device.

[0031] Because dental chairs on the market are now equipped with one strong and one weak saliva suction device as standard; the strong saliva suction device is powered by the air compressor, which will put pressure on the compressor's energy consumption and wear when used for a long time, and the long-term operation of the compressor will also cause noise; the weak suction device is powered by the negative pressure generated by the flow of water in the tap, which has low noise and low saliva suction force. When the tap water pressure is low, the weak saliva suction tube is difficult to use or even cannot be used. When the installation location is on a higher floor, the water pressure may be low, or the water pressure of the clinic itself is low, which may cause the weak saliva suction device to be unusable. The clinic needs to replace the saliva suction device with a new one. If it is not replaced, the strong saliva suction device will need to be used continuously, which will cause the compressor to work for a long time, which will not only increase costs, but may also cause the compressor to be damaged due to high-intensity work. Continuous use of the strong saliva suction device may also cause discomfort to the patient. Replacing the entire saliva suction device because the weak saliva suction device cannot be used will increase costs, causing greater losses to the user.

[0032] Furthermore, the saliva suction device attached to the dental chair is well attached to the circuit, gas circuit and drainage part of the original dental chair, relies on the original circuit of the dental chair for power supply, utilizes the pneumatic component of the saliva suction tube of the original dental chair to control the switch of the power supply of the saliva suction device attached to the dental chair, and uses the original drainage pipe of the dental chair, so it can well replace the weak saliva suction system of the original dental chair. There is no need to replace the saliva suction device. Only the device needs to be installed on the old saliva suction device, and the suction head of the old saliva suction device can be used to control the operation of the device, thereby reducing costs. There is no need to disassemble and re-wire the wiring and assemble, and it can be directly attached and installed. It is easy to use and saves costs.

[0033] A disassembly cylinder 52 is installed above the mounting seat 51, and first clamping blocks 524 are fixedly installed on both sides of the bottom end of the disassembly cylinder 52. An internal clamping cylinder 511 is fixedly installed inside the mounting seat 51, and a first clamping groove 512 is provided between the internal clamping cylinder 511 and the mounting seat 51. Two second clamping grooves 513 corresponding to the first clamping block 524 are provided on the inner side wall of the first clamping groove 512. A first spring 514 is fixedly installed inside the first clamping groove 512. A filter cylinder 54 is provided inside the disassembly cylinder 52, and a second valve component 55 is rotatably installed on the lower end of the filter cylinder 54. The liquid outlet pipe 515 is connected to the interior of the internal clamping cylinder 511, and the first valve assembly 53 is fixedly installed inside the liquid outlet pipe 515.

[0034] When installing the filter 5, first install the filter cartridge 54 inside the disassembly cartridge 52, then align the first clamping block 524 with the second clamping groove 513, insert it and rotate it. At this time, the first clamping block 524 can be clamped inside the second clamping groove 513, thereby completing the installation of the mounting seat 51 and the disassembly cartridge 52. When the disassembly cartridge 52 is rotated and clamped, the first valve component 53 and the second valve component 55 are in an open state, and the liquid can pass through the first valve component 53 and the second valve component 55 to enter the interior of the filter cartridge 54, and enter the interior of the liquid inlet pipe 21 after being filtered by the filter cartridge 54. When the disassembly cartridge 52 is rotated in the opposite direction to be taken out of the mounting seat 51, the first valve component 53 and the second valve component 55 are in a closed state. At this time, the liquid cannot flow out of the liquid outlet pipe 515, and the filtered impurities will also be stored in the interior of the filter cartridge 54.

[0035] The first valve component 53 includes a fixed ring 531, and two second clamping blocks 532 are fixedly installed on the lower end of the interior of the fixed ring 531, and a rotating plate 533 is rotatably installed on the upper end of the interior of the fixed ring 531. Both sides of the rotating plate 533 have transition grooves 535 corresponding to the second clamping blocks 532. Two connecting sleeves 534 are fixedly installed on the upper surface of the rotating plate 533. The second valve component 55 includes a mounting ring 551, which is rotatably installed on the inner bottom end of the mounting seat 51. Two first sealing plates 552 are fixedly installed on the upper surface of the mounting ring 551. Two second sealing plates 553 corresponding to the first sealing plates 552 are rotatably installed inside the mounting ring 551, and two connecting sleeves 534 corresponding to the connecting sleeves 534 are fixedly installed on the lower surface of the second sealing plate 553. The first connecting rod 554 is fixedly installed with a center rod 555 in the middle of the upper surface of the second sealing plate 553, and the center rod 555 is rotatably clamped in the middle of the first sealing plate 552. One end of the first sealing plate 552 is fixedly installed in the inside of the filter cartridge 54. Second connecting rods 556 are fixedly installed on both sides of the lower surface of the mounting ring 551. Two third clamping grooves 516 corresponding to the second connecting rods 556 are provided in the interior of the mounting seat 51. A plurality of first clamping columns 521 are fixedly installed on the inner upper surface of the disassembly cylinder 52. A plurality of grooves corresponding to the first clamping columns 521 are provided on the upper end of the filter cartridge 54. A button 522 is slidably clamped in the middle of the upper wall of the disassembly cylinder 52. One end of the button 522 is in contact with the upper surface of the filter cartridge 54. A second spring 523 is fixedly installed between the button 522 and the disassembly cylinder 52.

[0036] Before use, first align the groove body on the filter cartridge 54 with the first clamping column 521 and insert it into the interior of the disassembly cylinder 52. At this time, multiple first clamping columns 521 clamp the filter cartridge 54 so that it cannot rotate. Then insert the disassembly cylinder 52 into the interior of the first clamping groove 512. At this time, the first connecting rod 554 enters the interior of the connecting sleeve 534. At the same time, the second connecting rod 556 enters the interior of the third clamping groove 516. At this time, rotate the disassembly cylinder 52, and the disassembly cylinder 52 drives the filter cartridge 54 to rotate. The rotation of the filter cartridge 54 will drive the center rod 555 and the second sealing plate 553 to rotate. When the second sealing plate 553 rotates, it will drive the first connecting rod 554 and the connecting sleeve 534 to rotate, and then the connecting sleeve 534 drives the rotating plate 533 to rotate, and the first sealing plate 552 and the mounting ring 551 are clamped by the second connecting rod 556, and then the second sealing plate 553 is rotated. The first sealing plate 552 and the second sealing plate 553 rotate relative to each other, so that the second valve component 55 is opened, and the rotation of the rotating plate 533 will be staggered with the two second blocks 532, and then when the disassembly cylinder 52 is reversed, the disassembly cylinder 52 drives the filter cylinder 54 to rotate, and the rotation of the filter cylinder 54 drives the second sealing plate 553 to rotate, so that the second valve component 55 is closed, and the first connecting rod 554 drives the connecting sleeve 534 and the rotating plate 533 to rotate to control the first valve assembly 53 to be closed. At this time, the disassembly cylinder 52 is taken out from the inside of the first card groove 512, and then the first sealing plate 552 is pressed. The first sealing plate 552 pushes the filter cartridge 54 to detach from the first card column 521, and then the filter cartridge 54 is removed. Because the second valve component 55 is in a closed state, impurities can be stored inside the filter cartridge 54 to prevent them from falling.

[0037] Furthermore, after use, the device can rotate the disassembly cylinder 52 in the opposite direction, and at this time, the second valve component 55 and the first valve assembly 53 can be controlled to be closed. The closing of the second valve component 55 can store impurities inside the filter cartridge 54 to prevent the internal debris from falling and scattering when the filter cartridge 54 is taken out, and the closing of the first valve assembly 53 can prevent the liquid inside the liquid outlet pipe 515 from spilling out when the filter cartridge 54 is disassembled, causing the surrounding instruments and environment to be polluted. When the filter cartridge 54 needs to be cleaned, it is only necessary to rotate the first connecting rod 554 to open the second valve component 55 and then rinse it with clean water.

[0038] The device is provided with a button 522, so that when taking out a dirty filter cartridge 54, there is no need to use water to detent the filter cartridge 54. The filter cartridge 54 can be taken out by pinching the disassembly cylinder 52 and pushing the button 522 without touching the filter cartridge 54. Because a large number of pathogens may exist in the patient's mouth, non-contact disassembly can greatly protect the safety of the user.

[0039] Working principle: In actual use, the air pipe 41 is connected to the air path of the original saliva suction device, and then the power interface 4 is connected to the power supply circuit of the original saliva suction device. The power interface 4 can provide electrical energy to the diaphragm pump 2, and the transformer 3 can convert the voltage output by the power interface 4 into a voltage that can be used by the diaphragm pump 2. When gas passes through the air-controlled switch 42, the air-controlled switch 42 will be in an open state, and then the air-controlled switch 42 controls the power interface 4 to close the power supply. At this time, the transformer 3 and the diaphragm pump 2 can work. When the diaphragm pump 2 is working, the air flow and liquid inside the liquid inlet pipe 21 will be output to the discharge pipe 22 together, and the liquid outlet pipe 515 is connected to the original saliva suction device head, so that the diaphragm pump 2 can absorb the saliva through the filter 5, and then output it from the discharge pipe 22. The filter 5 can filter the absorbed saliva, and the discharge pipe 22 is connected to the drainage system of the original saliva suction device.

[0040] When installing the filter 5, first install the filter cartridge 54 inside the disassembly cartridge 52, then align the first clamping block 524 with the second clamping groove 513, insert it and rotate it. At this time, the first clamping block 524 can be clamped inside the second clamping groove 513, thereby completing the installation of the mounting seat 51 and the disassembly cartridge 52. When the disassembly cartridge 52 is rotated and clamped, the first valve component 53 and the second valve component 55 are in an open state, and the liquid can pass through the first valve component 53 and the second valve component 55 to enter the interior of the filter cartridge 54, and enter the interior of the liquid inlet pipe 21 after being filtered by the filter cartridge 54. When the disassembly cartridge 52 is rotated in the opposite direction to be taken out of the mounting seat 51, the first valve component 53 and the second valve component 55 are in a closed state. At this time, the liquid cannot flow out of the liquid outlet pipe 515, and the filtered impurities will also be stored in the interior of the filter cartridge 54.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dental chair with a saliva extractor, comprising a control box (1), characterized in that: A diaphragm pump (2), a transformer (3), and a power interface (4) are fixedly installed inside the control box (1); an input end of the power interface (4) extends to the outside of the control box (1) and is fixedly installed with a liquid inlet pipe (21); an output end of the power interface (4) extends to the outside of the control box (1) and is fixedly installed with a liquid discharge pipe (22); a filter (5) is installed on the liquid inlet pipe (21); an air pipe (41) is fixedly connected to one side of the power interface (4); an air-controlled switch (42) is fixedly installed on the air pipe (41); the air-controlled switch (42) is electrically connected to the power interface (4); the transformer (3) is electrically connected to the power interface (4); and the diaphragm pump (2) is electrically connected to the transformer (3).

2. The dental chair with saliva extractor according to claim 1, characterized in that: The filter (5) comprises a mounting seat (51), a disassembly cylinder (52) is mounted above the mounting seat (51), first clamping blocks (524) are fixedly mounted on both sides of the bottom end of the disassembly cylinder (52), an internal clamping cylinder (511) is fixedly mounted inside the mounting seat (51), a first clamping groove (512) is provided between the internal clamping cylinder (511) and the mounting seat (51), two second clamping grooves (513) corresponding to the first clamping blocks (524) are provided on the inner side wall of the first clamping groove (512), a first spring (514) is fixedly mounted inside the first clamping groove (512), a filter cylinder (54) is provided inside the disassembly cylinder (52), a second valve component (55) is rotatably mounted on the lower end of the filter cylinder (54), and a liquid outlet pipe (515) is fixedly mounted on the lower surface of the mounting seat (51), the liquid outlet pipe (515) is communicated with the inside of the internal clamping cylinder (511), and a first valve component (53) is fixedly mounted inside the liquid outlet pipe (515).

3. The dental chair with saliva extractor according to claim 2, characterized in that: The first valve assembly (53) comprises a fixed ring (531), two second clamping blocks (532) are fixedly mounted on the lower end of the interior of the fixed ring (531), a rotating plate (533) is rotatably mounted on the upper end of the interior of the fixed ring (531), transition grooves (535) corresponding to the second clamping blocks (532) are provided on both sides of the rotating plate (533), and two connecting sleeves (534) are fixedly mounted on the upper surface of the rotating plate (533).

4. The dental chair with saliva extractor according to claim 3, characterized in that: The second valve component (55) comprises a mounting ring (551), the mounting ring (551) being rotatably mounted on the inner bottom end of the mounting seat (51), two mutually symmetrical first sealing plates (552) being fixedly mounted on the upper surface of the mounting ring (551), the two second sealing plates (553) corresponding to the first sealing plates (552) being rotatably mounted inside the mounting ring (551), and two first connecting rods (554) corresponding to the connecting sleeve (534) being fixedly mounted on the lower surface of the second sealing plate (553).

5. The dental chair with saliva extractor according to claim 4, characterized in that: A center rod (555) is fixedly mounted in the middle of the upper surface of the second sealing plate (553), and the center rod (555) is rotatably clamped in the middle of the first sealing plate (552). One end of the first sealing plate (552) is fixedly mounted inside the filter cartridge (54). Second connecting rods (556) are fixedly mounted on both sides of the lower surface of the mounting ring (551), and two third clamping grooves (516) corresponding to the second connecting rods (556) are provided inside the mounting seat (51).

6. The dental chair with saliva extractor according to claim 5, characterized in that: A plurality of first clamping columns (521) are fixedly mounted on the inner upper surface of the disassembly cylinder (52); a plurality of slots corresponding to the first clamping columns (521) are formed at the upper end of the filter cylinder (54); a button (522) is slidably mounted in the middle of the upper wall of the disassembly cylinder (52); one end of the button (522) is in contact with the upper surface of the filter cylinder (54); and a second spring (523) is fixedly mounted between the button (522) and the disassembly cylinder (52).

7. The dental chair with saliva extractor according to claim 6, characterized in that: The liquid inlet pipe (21) is fixedly mounted on the output end of the filter (5).

8. The dental chair with saliva extractor according to claim 7, characterized in that: A dustproof door is hinged on the control box (1).

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