A negative pressure suction pipeline system and its layout method

Abstract

This application relates to a negative pressure suction piping system and its arrangement method, belonging to the field of negative pressure suction technology. It includes a negative pressure suction system main unit and a dental chair. The suction inlet of the negative pressure suction system main unit is connected to a main pipe, and several parallel branch pipes run through the main pipe. The ends of the branch pipes are connected to the dental chair. A negative pressure compensation device is connected in series on the main pipe or branch pipes, or a negative pressure compensation device is connected in series on both the main pipe and branch pipes. This application ensures that the negative pressure suction of the dental chair far from the negative pressure suction system main unit is not affected by the negative pressure compensation device on the main pipe or branch pipes, thereby optimizing the reliability of the dental chair at the distal end.

Description

Technical Field

[0001] This application belongs to the field of negative pressure suction technology, specifically relating to a negative pressure suction pipeline system and its arrangement method. Background Technology

[0002] Large hospitals or dental clinics typically have multiple dental chairs, arranged in various treatment rooms. Negative pressure suction systems usually consist of a single suction unit connected to each dental chair via a main pipe and branch pipes. Due to factors such as frictional resistance, the negative pressure varies across different sections of the main pipe; generally, the negative pressure decreases further away from the main suction unit, affecting the effectiveness of the system. Summary of the Invention

[0003] The technical problem to be solved by this application is to overcome the shortcomings of the prior art and provide a negative pressure suction pipeline system and its arrangement method. This application ensures that the negative pressure suction of the dental chair at a distance from the main negative pressure suction system host is not affected by the negative pressure compensation device on the main pipeline or branch pipeline, thereby optimizing the reliability of the use of the distal dental chair.

[0004] The technical solution adopted in this application to solve the problems existing in the prior art is:

[0005] A negative pressure suction pipeline system includes a negative pressure suction system main unit and a dental chair. The suction inlet of the negative pressure suction system main unit is connected to a main pipeline, and several parallel branch pipelines are connected to the main pipeline. The ends of the branch pipelines are connected to the dental chair.

[0006] The main pipeline or branch pipeline is connected in series with a negative pressure compensation device, or both the main pipeline and the branch pipeline are connected in series with a negative pressure compensation device.

[0007] Preferably, the negative pressure compensation device includes a housing, and a negative pressure compensation component is provided inside the housing.

[0008] The negative pressure compensation component consists of two opposing rotating wheels, with protrusions on the circumference of each wheel. An expansion airbag is sandwiched between the two wheels, and an inlet pipe and an outlet pipe are respectively connected to the upper and lower ends of the expansion airbag.

[0009] The drive assembly drives two rotating wheels to rotate in opposite directions. When the two rotating wheels rotate, the protrusion squeezes and expands the airbag from the inlet pipe end to the outlet pipe end.

[0010] Preferably, the rotating wheel is provided with 2 to 5 protrusions arranged in a circular array around its axis, and the protrusions on the two rotating wheels simultaneously abut against the expansion airbag.

[0011] Preferably, the gap between the two rotating wheels is minimized when the protrusions rotate to the horizontal position, and the gap between them is greater than the wall thickness of the expansion airbag.

[0012] Preferably, the expansion airbags are arranged vertically, and the horizontal cross-sectional shape of the expansion airbags is rectangular, with a cross-sectional area larger than that of the main pipeline.

[0013] Preferably, the thickness of the protrusion is greater than the length of the horizontal cross-section of the expanded airbag.

[0014] Preferably, a support plate is fixed inside the shell, and a mounting plate is fixed outside the expanded airbag, with the mounting plate being fixedly connected to the support plate.

[0015] Preferably, a detachable pressure plate is fixed on the bearing plate, and the lap plate is clamped between the bearing plate and the pressure plate.

[0016] Preferably, the front end of the housing is open, and a front cover is provided at the open end.

[0017] A method for arranging a negative pressure suction pipeline system, comprising the aforementioned negative pressure suction pipeline system, includes the following steps:

[0018] S01. Arrange the main pipeline according to the location of the dental chair, and connect the dental chair to the main pipeline through branch pipelines;

[0019] S02. Adjust the pressure of the negative pressure suction system main unit to ensure that the negative pressure value of the 5th or 6th dental chair away from the suction port of the negative pressure suction system main unit reaches the threshold.

[0020] S03. Detect the negative pressure on the branch line of the 7th or 8th dental chair away from the main unit of the negative pressure suction system. If the negative pressure is lower than or equal to the threshold, install a negative pressure compensation device on the branch line or the main line of that node. If the negative pressure is higher than the threshold, detect the negative pressure on the next branch line.

[0021] Compared with the prior art, the beneficial effects of this application are as follows:

[0022] (1) By increasing the suction of the remote branch pipeline through the negative pressure compensation device, there is no need to increase the power of the main unit of the negative pressure suction system. The negative pressure compensation device can be turned on as needed, thereby reducing energy consumption.

[0023] (2) The liquid drawn by negative pressure flows inside the expansion bladder and does not come into contact with other components of the negative pressure compensation device, thus avoiding contamination. Attached Figure Description

[0024] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a first system diagram of a negative pressure suction pipeline system according to this application.

[0026] Figure 2 This is a second system diagram of a negative pressure suction pipeline system according to this application.

[0027] Figure 3 This is a structural diagram of a negative pressure compensation device in a negative pressure suction pipeline system according to this application.

[0028] Figure 4 for Figure 3 The exploded diagram,

[0029] Figure 5 This is a structural diagram of the negative pressure compensation device in this application without the front end cover.

[0030] Figure 6 for Figure 5 Front view,

[0031] Figure 7 This is a first cross-sectional view of the negative pressure compensation device in this application.

[0032] Figure 8 for Figure 7 Enlarged view of a portion of point A in the middle.

[0033] Figure 9 This is a second cross-sectional view of the negative pressure compensation device in this application.

[0034] Figure 10 This is a structural diagram of the internal negative pressure compensation component of the negative pressure compensation device in this application.

[0035] In the diagram: 01-Negative pressure compensation device, 02-Negative pressure suction system main unit, 03-Main pipeline, 04-Branch pipeline, 05-Dental chair;

[0036] 1-Housing, 101-Bearing plate, 102-Mounting hole, 2-Front end cover, 201-Support, 3-Rotating wheel, 301-Protrusion, 4-Driving gear, 5-Passive pulley, 6-Drive mechanism, 7-Synchronous belt, 8-Intermediate pulley, 801-Rotating shaft, 802-Driving pulley, 803-Passive gear, 9-Expansion airbag, 901-Inlet pipe, 902-Drain pipe, 903-Panel, 10-Pressure plate, 11-Mounting plate. Detailed Implementation

[0037] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0038] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] The following detailed description of a negative pressure suction pipeline system and its arrangement method, in conjunction with the accompanying drawings, is not intended to limit the scope of this application.

[0041] A negative pressure suction pipeline system, consisting of an attached Figure 1 and appendix Figure 2 As shown, the system includes a negative pressure suction system main unit 02 and a dental chair 05. The negative pressure suction system main unit 02 uses existing technology to provide the necessary negative pressure suction for the dental chairs 05 on one or more floors of a dental clinic. It is connected to the dental chairs 05 through a main pipe 03 and branch pipes 04. During oral treatment, the dental chair 05 suctions the waste fluid generated into the negative pressure suction system main unit 02 through the branch pipes 04 and the main pipe 03.

[0042] The specific arrangement is as follows: the suction inlet of the negative pressure suction system main unit 02 is connected to a main pipe 03, and several parallel branch pipes 04 are connected to the main pipe 03. The ends of the branch pipes 04 are connected to the dental chair 05. The cross-sectional area of ​​the main pipe 03 is larger than the cross-sectional area of ​​the branch pipes 04.

[0043] Since the distances between each branch pipe 04 and the main unit 02 of the negative pressure suction system are not equal, the negative pressure of each branch pipe 04 is different due to factors such as friction resistance. The suction force inside the branch pipe 04 is smaller the farther away from the main unit 02 of the negative pressure suction system.

[0044] To ensure that the suction power of the remote branch pipe 04 reaches the threshold, the traditional method is to increase the power of the negative pressure suction system main unit 02 to achieve the threshold suction power in the remote branch pipe 04. This results in the suction power inside the branch pipe 04, which is closer to the negative pressure suction system main unit 02, exceeding the threshold. The suction power must be adjusted by changing the opening of the shut-off valve on the branch pipe 04. However, the negative pressure suction system main unit 02 has high energy consumption, and increasing its power results in significant energy loss, failing to achieve energy conservation and consumption reduction. Furthermore, the energy waste is considerable in the branch pipe 04, where the shut-off valve opening needs to be reduced to lower the suction power.

[0045] To increase the suction force on the remote branch pipe 04 without increasing the power of the negative pressure suction system main unit 02, in this embodiment, a negative pressure compensation device 01 is connected in series on the main pipe 03 or the branch pipe 04, or both the main pipe 03 and the branch pipe 04 are connected in series with a negative pressure compensation device 01. The negative pressure compensation device 01 increases the suction force of the branch pipe 04, thereby ensuring that the power of the negative pressure suction system main unit 02 remains within its high-efficiency range.

[0046] By the attached Figure 3 To be continued Figure 10 As shown, the negative pressure compensation device 01 includes a housing 1, and a negative pressure compensation component is provided inside the housing 1. In order to facilitate maintenance of the internal mechanism of the housing 1, in this embodiment, the front end of the housing 1 is open, and a front end cover 2 is provided at the open end.

[0047] The negative pressure compensation component consists of two opposing rotating wheels 3. Each rotating wheel 3 has a protrusion 301 on its circumferential surface, and a vertically arranged expansion airbag 9 is sandwiched between the two rotating wheels 3. The upper and lower ends of the expansion airbag 9 are respectively connected to an inlet pipe 901 and a drain pipe 902, with the ends of the inlet pipe 901 and drain pipe 902 extending to the outside of the housing 1.

[0048] The drive assembly drives two rotating wheels 3 to rotate in opposite directions. As the two rotating wheels 3 rotate, the protrusions 301 squeeze the expanding airbag 9 from the inlet pipe 901 end to the outlet pipe 902 end. Suction is only generated when the protrusions 301 squeeze the expanding airbag 9 from top to bottom, increasing the suction inside the branch pipe 04. In order to shorten the interval of suction increase, the rotating wheels 3 are provided with 2 to 5 protrusions 301 arranged in a circular array around their axis, and the protrusions 301 on both rotating wheels 3 simultaneously abut against the expanding airbag 9.

[0049] When the protrusions 301 of the two rotating wheels 3 rotate to the horizontal position, the gap between them is at its minimum, and the gap between them is greater than the wall thickness of the expansion airbag 9. The horizontal cross-sectional shape of the expansion airbag 9 is rectangular, and its cross-sectional area is greater than that of the main pipeline 03.

[0050] The thickness of the protrusion 301 is greater than the length of the horizontal cross section of the expansion airbag 9, so as to prevent the end of the expansion airbag 9 from detaching from the protrusion 301 after deformation during the compression process, thus extending the service life of the expansion airbag 9.

[0051] To prevent the expansion airbag 9 from moving up and down during compression, a support plate 101 is fixed inside the shell 1, and a mounting plate 903 is fixed outside the expansion airbag 9. The mounting plate 903 is fixedly connected to the support plate 101. A detachable pressure plate 10 is fixed on the support plate 101, and the mounting plate 903 is sandwiched between the support plate 101 and the pressure plate 10.

[0052] The drive assembly is located outside the front cover 2. The drive assembly includes a drive mechanism 6, which is a motor with a reduction gear.

[0053] The central shaft of the rotating wheel 3 passes through the front cover 2 and is located on the outside. The central shaft of one of the rotating wheels 3 is connected to the output shaft of the drive mechanism 6.

[0054] To enable the two rotating wheels 3 to move towards each other, two meshing gears can be fitted onto the central shafts of the two rotating wheels 3. However, with this arrangement, the two gears are relatively large.

[0055] In this embodiment, another arrangement is also provided, in which a driving gear 4 is mounted on the central shaft of one of the rotating shafts 3, a driven pulley 5 is mounted on the central shaft of the other rotating shaft 3, and an intermediate wheel 8 is provided between the two rotating shafts 3. The intermediate wheel 8 includes a rotating shaft 801, on which a driving pulley 802 and a driven gear 803 are mounted. A synchronous belt 7 is mounted between the driving pulley 802 and the driven pulley 5, and the driven gear 803 is meshed with the driving gear 4.

[0056] One end of the rotating shaft 801 is inserted into the front cover 2, and the other end is limited by the mounting plate 11. The mounting plate 11 is detachably connected to the front cover 2 by the support 201.

[0057] A mounting hole 102 is provided on the top of the back of the housing 1 to facilitate the fixed installation of the housing 1.

[0058] A method for arranging a negative pressure suction pipeline system, comprising the aforementioned negative pressure suction pipeline system, includes the following steps:

[0059] S01. Arrange the main pipeline 03 according to the position of the dental chair 05, and connect the dental chair 05 and the main pipeline 03 through the branch pipeline 04.

[0060] S02. Adjust the pressure of the negative pressure suction system host 02 to ensure that the negative pressure value of the 5th or 6th dental chair 05 away from the suction port of the negative pressure suction system host 02 reaches the threshold.

[0061] S03. Detect the negative pressure on the branch pipe 04 of the 7th or 8th dental chair 05 of the negative pressure suction system main unit 02. If the negative pressure is lower than or equal to the threshold, install a negative pressure compensation device 01 on the branch pipe 04 or the main pipe 03 of that node. If the negative pressure is higher than the threshold, detect the negative pressure on the next branch pipe 04.

[0062] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A negative pressure suction pipeline system, comprising a negative pressure suction system main unit (02) and a dental chair (05), characterized in that: The suction port of the negative pressure suction system host (02) is connected to the main pipeline (03), and several parallel branch pipelines (04) are connected to the main pipeline (03). The end of the branch pipelines (04) is connected to the dental chair (05). A negative pressure compensation device (01) is connected in series on the main pipeline (03) or branch pipeline (04). Or a negative pressure compensation device (01) is connected in series on both the main pipeline (03) and the branch pipeline (04). The negative pressure compensation device (01) includes a housing (1), the front end of the housing (1) is open, and a front end cover (2) is provided at the open end. The negative pressure compensation component is provided inside the housing (1). The negative pressure compensation component consists of two opposing rotating wheels (3). The circumferential surface of the rotating wheels (3) is provided with protrusions (301). An expansion airbag (9) is sandwiched between the two rotating wheels (3). The rotating wheels (3) are provided with 2 to 5 protrusions (301) arranged in a ring array around their axis. The protrusions (301) on the two rotating wheels (3) simultaneously abut against the expansion airbag (9). The upper and lower ends of the expansion airbag (9) are respectively connected to an inlet pipe (901) and a drain pipe (902). The drive assembly drives two rotating wheels (3) to rotate in opposite directions. When the two rotating wheels (3) rotate, the protrusion (301) squeezes the expansion airbag (9) from the inlet pipe (901) end to the outlet pipe (902) end. Only when the protrusion (301) squeezes the expansion airbag (9) from top to bottom will suction be generated, which will increase the suction inside the branch pipe (04). One of the rotating wheels (3) has a drive gear (4) mounted on its central shaft, and the other rotating wheel (3) has a driven pulley (5) mounted on its central shaft. An intermediate wheel (8) is provided between the two rotating wheels (3). The intermediate wheel (8) includes a rotating shaft (801), on which a drive pulley (802) and a driven gear (803) are mounted. A synchronous belt (7) is mounted between the drive pulley (802) and the driven pulley (5). The driven gear (803) is meshed with the drive gear (4). One end of the rotating shaft (801) is inserted into the front cover (2), and the other end is limited by the mounting plate (11). The mounting plate (11) is detachably connected to the front cover (2) through the support column (201). The central axis of the rotating wheel (3) passes through the front cover (2) and is located on the outside. The drive assembly is located on the outside of the front cover (2). The drive assembly includes a drive mechanism (6), in which the central axis of one of the rotating wheels (3) is connected to the output shaft of the drive mechanism (6). The expansion airbag (9) is arranged vertically, and the horizontal cross-sectional shape of the expansion airbag (9) is rectangular, with a cross-sectional area larger than that of the main pipeline (03). The thickness of the protrusion (301) is greater than the length of the horizontal cross section of the expansion airbag (9); The housing (1) is fixed with a support plate (101) inside, and the expansion airbag (9) is fixed with a mounting plate (903) outside, and the mounting plate (903) is fixedly connected to the support plate (101). A detachable pressure plate (10) is fixed on the bearing plate (101), and the lap plate (903) is sandwiched between the bearing plate (101) and the pressure plate (10).

2. The negative pressure suction pipeline system according to claim 1, characterized in that: When the protrusions (301) of the two rotating wheels (3) rotate to the horizontal position, the gap between them is the smallest and the gap between them is greater than the wall thickness of the expansion airbag (9).

3. A method for arranging a negative pressure suction pipeline system, comprising the negative pressure suction pipeline system as described in claim 2, characterized in that, Includes the following steps: S01. Arrange the main pipeline (03) according to the position of the dental chair (05), and connect the dental chair (05) and the main pipeline (03) through the branch pipeline (04); S02. Adjust the pressure of the negative pressure suction system host (02) to ensure that the negative pressure value of the 5th or 6th dental chair (05) away from the suction port of the negative pressure suction system host (02) reaches the threshold. S03. Detect the negative pressure on the branch pipe (04) of the 7th or 8th dental chair (05) of the negative pressure suction system main unit (02). If the negative pressure is lower than or equal to the threshold, install a negative pressure compensation device (01) on the branch pipe (04) or the corresponding main pipe (03). If the negative pressure is higher than the threshold, detect the negative pressure on the next branch pipe (04).

Images