A separation and filtering device for vacuum negative pressure machine

Abstract

The present invention discloses a separation filter device for a vacuum negative pressure machine, and specifically relates to the technical field of filter tube devices for negative pressure machines, including a filter bin, wherein the inner cavity of the filter bin is provided with a cyclone filter structure, the upper portion of the outer surface of the cyclone filter structure is provided with a cleaning structure, the front portion of the inner cavity of the filter bin is provided with a driving structure for driving the cyclone filter structure, and the lower portion of the inner cavity of the cyclone filter structure is provided with a dust removal structure that penetrates the cyclone filter structure and the filter bin and extends to the rear end of the filter bin. The separation filter device for a vacuum negative pressure machine described in the present invention utilizes the action of an air inlet pipe and a cyclone filter structure to form a cyclone in the cyclone filter structure for the air drawn in by the negative pressure machine, and the dust in the air is separated from the air through the cooperation of the driving structure and the cyclone filter structure and the cyclone action, and the dust residue inside the cyclone filter structure is reduced through the action of the cleaning structure, thereby ensuring its ventilation efficiency and filtration efficiency, and ensuring the protection of subsequent equipment.

Description

Technical Field

[0001] The invention relates to the technical field of filter tube devices for negative pressure machines, and in particular to a separation filter device for vacuum negative pressure machines. Background Art

[0002] Vacuum negative pressure machine is a technology that uses the external force generated by gas pressure difference to achieve object movement or process processing. Its core principle is to create an environment below atmospheric pressure, so that the gas flows from the high-pressure area to the low-pressure area, forming an attraction. In the medical field, vacuum negative pressure technology can be used to promote wound healing, reduce the risk of infection, and is used in wound care and purification. In addition, vacuum negative pressure machines are also widely used in the manufacturing field, such as raw material transportation, adsorption and packaging, as well as fixing workpieces through vacuum adsorption technology to ensure processing quality.

[0003] In order to ensure the effectiveness and safety of the filtration system, the vacuum negative pressure machine needs to filter the inhaled air during its intake process. The installation of a filter device can remove large particles of impurities, such as dust and dandruff, thereby protecting subsequent equipment from being blocked by large particles and extending its service life. In addition, filtration separation can also help reduce the spread of small particles such as bacteria and droplets, improve air cleanliness, and avoid cross infection, which is particularly important in medical environments. Summary of the invention

[0004] The main purpose of the present invention is to provide a separation and filtration device for a vacuum negative pressure machine, which can effectively solve the problems that the existing vacuum negative pressure device cannot process impurities such as dandruff and dust in the gap and the conventional filtration system requires frequent maintenance and cannot achieve self-cleaning.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A separation and filtering device for a vacuum negative pressure machine comprises a filter bin, an inner cavity of the filter bin is provided with a cyclone filter structure, the front end of the filter bin is fixedly connected with an air inlet pipe connected with the cyclone filter structure, the rear end of the filter bin is fixedly connected with an air outlet pipe connected with its inner cavity, a cleaning structure is provided on the upper part of the outer surface of the cyclone filter structure, a driving structure for driving the cyclone filter structure is provided at the front part of the inner cavity of the filter bin, and a dust removal structure is provided at the lower part of the inner cavity of the cyclone filter structure, which penetrates the cyclone filter structure and the filter bin and extends to the rear end of the filter bin.

[0007] Preferably, the swirl filtering structure includes a cross mounting frame which is symmetrically distributed front and back and fixedly connected to the inner cavity of the filter bin, the ends of the two cross mounting frames close to each other are rotatably connected to a mounting plate, the ends of the two mounting plates close to each other are fixedly installed with a filter screen, the ends of the two cross mounting frames close to each other are fixedly connected to a swirl assembly connected to the air intake pipe, and the lower front end of the cross mounting frame located at the front is fixedly connected to the driving structure.

[0008] Preferably, the swirl assembly includes a distribution pipe, the front and rear portions of the outer surface of the distribution pipe are fixedly connected to the inner surface of an adjacent cross mounting frame, a plurality of groups of swirl holes connected to its inner cavity are evenly distributed on the outer surface of the distribution pipe, and the swirl holes in the same group are distributed in a ring shape, and a plurality of guide rings are evenly distributed and fixedly connected to the inner surface of the distribution pipe, and the guide rings are located at the rear of the adjacent swirl holes and are in the shape of a hollow cone.

[0009] Preferably, the driving structure includes a driving motor fixedly connected to the lower part of the front end of the cross mounting frame located at the front, the output end of the driving motor passes through the front end of the cross mounting frame, extends to the rear end of the cross mounting frame and is fixedly connected to a driving gear, and the outer surface of the driving gear is meshed with a driven gear ring fixedly connected to the outer surface of the mounting plate.

[0010] Preferably, the cleaning structure includes a support plate fixedly connected to the cross mounting frames on both sides, a rectangular box is fixedly connected to the lower end of the support plate, the inner cavity of the rectangular box and the mounting plates on both sides are symmetrically provided with driving components, and the inner cavity of the rectangular box is equidistantly provided with a number of cleaning components transmission-connected to the driving components.

[0011] Preferably, the driving assembly includes a mounting groove opened on one side of the mounting plate close to the rectangular box, and two limiting grooves are opened on one end of the two mounting grooves away from the rectangular box, the inner surfaces of the limiting grooves on both sides are slidably connected with a driven shaft rotatably connected to the inner surface of the rectangular box, the outer surface of the driven shaft is symmetrically fixedly connected with a driven gear, and the outer surfaces of the driven gears on both sides are meshed with a driving gear ring installed on the outer arc surface of the mounting groove.

[0012] Preferably, the cleaning component includes a spiral cam fixedly connected to the outer surface of the driven shaft, a limit rod symmetrically fixedly connected to the top wall of the inner cavity of the rectangular box, the lower ends of the two limit rods are slidably connected to a U-shaped block, the inner surface of the horizontal part of the U-shaped block is fixedly connected to a connecting rod, the outer surface of the connecting rod is in close contact with the outer surface of the spiral cam, the lower end of the vertical part of the U-shaped block is in close contact with the outer surface of the filter screen, the upper end of the U-shaped block is symmetrically fixedly connected to a compression spring fixedly connected to the rear top wall of the inner cavity of the rectangular box, and the two compression springs are respectively mounted on the outer surfaces of adjacent limit rods.

[0013] Preferably, the dust exhaust structure includes a spiral feed plate fixedly mounted on the inner surface of the filter and a cleaning brush mounted on the lower end of the distribution pipe through a bracket, the lower brush of the cleaning brush is in contact with the surface of the spiral feed plate and the lower end of the brush is in close contact with the inner surface of the filter, the mounting plate located at the rear is provided with a dust collecting assembly fixedly connected to the rear of the lower end of the cleaning brush, and the rear of the upper end of the cleaning brush is provided with a dust exhaust assembly that bypasses the swirl assembly and is connected to the rear end of the filter bin.

[0014] Preferably, the dust exhaust assembly includes a connecting pipe, the front end of the connecting pipe passes through the rear end of the filter bin, extends to the inner cavity of the distribution pipe and is fixedly connected to an air inlet connected to the inner cavity of the distribution pipe, the rear portion of the lower end of the connecting pipe is fixedly connected to a dust suction pipe connected to its inner cavity, a guide plate opening backwards is fixedly connected at the junction of the connecting pipe and the dust suction pipe, the lower end of the dust suction pipe is fixedly connected to the upper end of the cleaning brush and is connected to the dust collecting assembly through the cleaning brush.

[0015] Preferably, the dust collecting assembly includes a dust collecting groove opened on the inner surface of the mounting plate at the rear, the dust collecting groove is connected to the tail end of the spiral feeding plate, the inner surface of the dust collecting groove is slidably connected with an arc-shaped dust hood, a through hole is opened on the side of the arc-shaped dust hood facing the rotation direction, a connecting pipe connected to its inner cavity is fixedly connected to the inner arc surface of the arc-shaped dust hood, and the upper end of the connecting pipe passes through the lower end of the cleaning brush and extends to the upper end of the cleaning brush to be connected with the dust collection pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention utilizes the functions of the air inlet pipe and the cyclone filter structure to cause the air drawn in by the negative pressure machine to form a cyclone in the cyclone filter structure, and promotes the separation of dust in the air from the air through the cooperation of the driving structure and the cyclone filter structure and the cyclone action, and reduces the residual dust inside the cyclone filter structure through the action of the cleaning structure, so that the dust falls to the lower part of the inner cavity of the cyclone filter structure and is discharged through the action of the dust exhaust structure, thereby reducing the residual dust inside the cyclone filter structure, ensuring its ventilation efficiency and filtering efficiency, ensuring the protection of subsequent equipment, and improving the cleanliness of gas transmission.

[0018] The present invention uses the swirl holes opened in the distribution pipe to spray the air transported into the distribution pipe through the swirl holes into the filter screen. At the same time, the air sent into the air intake pipe is diverted by the guide ring to ensure the uniformity of its air outlet. The air that originally moves in a straight line is formed into a swirl through the swirl holes. The centrifugal force generated by the swirl action is used to separate the dust inside the air from the air. The dust is isolated inside the filter screen by the filter screen, so that the filtered air is sent out through the rear air outlet pipe to protect the subsequent equipment.

[0019] The present invention drives the driving gear to rotate through a driving motor, and drives the mounting plate to rotate through the action of the driving gear and the driven gear ring, thereby synchronously driving the mounting plates and the filter screen on both sides to rotate, thereby driving the cleaning component to knock the outer surface of the filter screen through the cooperation of the driving component in the mounting plate and the driving component, and the dust on the inner surface of the filter screen falls off through knocking and shaking, and falls to the lower part of the inner surface of the filter screen, thereby cleaning the dust on the filter screen, reducing the clogging of the filter material, and maintaining the filtering efficiency.

[0020] The present invention utilizes the function of the air inlet to receive the residual air in the distribution pipe, and forms a negative pressure in the dust suction pipe through the function of the connecting pipe and the guide plate, so as to draw the air in the dust collecting component through the dust suction pipe, utilize this suction force to absorb the dust in the dust collecting tank, and discharge it to the outside of the equipment through the connecting pipe, thereby reducing the dust residue in the filter screen, reducing the blockage of the filter material, and further maintaining the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic cross-sectional view of the internal structure of the filter bin of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the cyclone filtering structure and the driving structure of the present invention;

[0024] Figure 4 is a schematic cross-sectional view of the internal structure of the driving structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the swirl component of the present invention;

[0026] Figure 6 It is a schematic diagram of the left cross-sectional structure of the swirl component of the present invention;

[0027] Figure 7 It is a schematic cross-sectional structure diagram of the cleaning structure of the present invention;

[0028] Figure 8 For the present invention Figure 7 A is an enlarged schematic diagram of the local structure at center A;

[0029] Fig. 9 It is a schematic diagram of the structure of the cleaning component of the present invention;

[0030] Fig.10 It is a structural schematic diagram of the dust exhaust structure of the present invention;

[0031] Fig.11 It is a schematic diagram of the structure of the dust exhaust component and the dust collection component of the present invention;

[0032] Fig.12 For the present invention Fig.11 Enlarged schematic diagram of the local structure at point B in the middle.

[0033] In the figure: 1, air inlet pipe; 2, filter chamber; 3, air outlet pipe; 4, cyclone filter structure; 41, cross mounting frame; 42, mounting plate; 43, filter screen; 44, cyclone assembly; 441, distribution pipe; 442, cyclone hole; 443, guide ring; 5, driving structure; 51, driving motor; 52, driving gear; 53, driven gear ring; 6, cleaning structure; 61, support plate; 62, rectangular box; 63, cleaning assembly; 631, limit rod; 632, compression spring; 633, U-shaped block; 634, connecting rod; 635, spiral cam; 64, driving assembly; 641, limiting groove; 642, mounting groove; 643, driving gear ring; 644, driven gear; 645, driven shaft; 7, dust exhaust structure; 71, dust exhaust assembly; 711, connecting pipe; 712, dust suction pipe; 713, air inlet; 714, guide plate; 72, spiral feeding plate; 73, cleaning brush; 74, dust collection assembly; 741, connecting pipe; 742, arc-shaped dust suction hood; 743, dust collection groove. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] Embodiment 1, as Figure 1 , Figure 2 and Figure 3 As shown, a separation and filtering device for a vacuum negative pressure machine includes a filter chamber 2, an inner cavity of the filter chamber 2 is provided with a cyclone filter structure 4, the front end of the filter chamber 2 is fixedly connected with an air inlet pipe 1 connected with the cyclone filter structure 4, the rear end of the filter chamber 2 is fixedly connected with an air outlet pipe 3 connected with its inner cavity, a cleaning structure 6 is provided on the upper part of the outer surface of the cyclone filter structure 4, a driving structure 5 for driving the cyclone filter structure 4 is provided at the front part of the inner cavity of the filter chamber 2, and a dust removal structure 7 penetrating the cyclone filter structure 4 and the filter chamber 2 and extending to the rear end of the filter chamber 2 is provided at the lower part of the inner cavity of the cyclone filter structure 4.

[0036] During the operation of this embodiment, the air extracted by the negative pressure unit is cleaned and filtered through the air inlet pipe 1 and the air outlet pipe 3 connected to the vacuum negative pressure unit, and the air drawn into the negative pressure machine forms a vortex in the vortex filter structure 4 by utilizing the action of the air inlet pipe 1 and the vortex filter structure 4. The dust in the air is separated from the air through the cooperation and vortex action of the driving structure 5 and the vortex filter structure 4, and the dust residue inside the vortex filter structure 4 is reduced through the action of the cleaning structure 6, so that the dust falls to the lower part of the inner cavity of the vortex filter structure 4 and is discharged through the action of the dust exhaust structure 7, thereby reducing the dust residue inside the vortex filter structure 4, ensuring its ventilation efficiency and filtration efficiency, ensuring the protection of subsequent equipment, and improving the cleanliness of the gas transmission.

[0037] Embodiment 2. Based on Embodiment 1, this embodiment uses the swirl hole 442 opened in the distribution pipe 441 to spray the air transported from the air intake pipe 1 to the distribution pipe 441 into the filter 43 through the swirl hole 442. At the same time, the air delivered by the air intake pipe 1 is diverted by the guide ring 443 to ensure the uniformity of its air outlet. The air that originally moves in a straight line forms a swirl through the swirl hole 442. The centrifugal force generated by the swirl action is used to separate the dust inside the air from the air. The dust is isolated inside the filter 43 by the filter 43, so that the filtered air is sent out through the rear outlet pipe 3 to protect the subsequent equipment.

[0038] Specifically, in order to filter the air sent into the air intake pipe 1, refer to Figure 3 and Figure 4 The swirl filter structure 4 includes a cross mounting frame 41 which is symmetrically distributed front and back and fixedly connected to the inner cavity of the filter bin 2. The ends of the two cross mounting frames 41 close to each other are rotatably connected to a mounting plate 42. The ends of the two mounting plates 42 close to each other are fixedly installed with a filter screen 43. The ends of the two cross mounting frames 41 close to each other are fixedly connected to a swirl assembly 44 connected to the intake pipe 1. The lower front end of the cross mounting frame 41 located at the front is fixedly connected to the driving structure 5.

[0039] The cross mounting frame 41 is mainly used to fix the mounting plate 42 and the filter screen 43 in the inner cavity of the filter bin 2, and at the same time provide a fulcrum for the mounting plate 42 to rotate. The filter screen 43 is a conventional filtering device that allows air to pass smoothly but blocks dust from passing through. It has been widely used in the prior art. In the present invention, it is installed between the mounting plates 42 on both sides and rotates synchronously with the mounting plates 42.

[0040] Further, in order to send air into the filter 43 and cause it to form a swirl, refer to Figure 5 and Figure 6The swirl assembly 44 includes a distribution pipe 441. The front and rear portions of the outer surface of the distribution pipe 441 are fixedly connected to the inner surface of the adjacent cross mounting frame 41. The outer surface of the distribution pipe 441 is evenly distributed with a plurality of groups of swirl holes 442 connected to its inner cavity. The swirl holes 442 in the same group are distributed in an annular shape. The inner surface of the distribution pipe 441 is evenly distributed with a plurality of guide rings 443 fixedly connected. The guide rings 443 are located at the rear of the adjacent swirl holes 442 and are in the shape of a hollow cone.

[0041] The swirl hole 442 opened on the distribution pipe 441 has a spiral path, which can make the air that originally moves in a straight line form a spiral airflow moving around the central axis of the distribution pipe 441. At the same time, in order to ensure uniform distribution of the airflow and guide it to move in the direction of the swirl hole 442 in advance, a guide ring 443 is arranged at the rear side of the swirl hole 442. The guide ring 443 has a small diameter at the front and a large diameter at the rear and is fixed to the inner wall of the distribution pipe 441. When the airflow passes through, part of the airflow will flow upward along the arc surface of the guide ring 443 and be ejected through the swirl hole 442, and the rest of the airflow will continue to move backward through the middle of the guide ring 443.

[0042] The diameter of the swirl hole 442 is much smaller than the inner diameter of the distribution pipe 441. When the airflow enters the swirl hole 442 through the distribution pipe 441, the reduction in the pipe diameter will cause its flow rate to accelerate, thereby forming an effect of spraying from the swirl hole 442 to the inside of the filter 43. At the same time, since the swirl hole 442 is spiral, the airflow will generate centrifugal force during the flow process. The dust mass inside is relatively large, and it will be separated from the airflow due to the centrifugal force and hit the inner surface of the filter 43, and the air will pass normally.

[0043] At the same time, during the rotation of the mounting plate 42 and the filter screen 43 under the action of the driving structure 5, the centrifugal force can help dust fall off the surface of the filter screen 43, reduce the clogging of the filter material, and thus maintain the filtration efficiency. During the rotation process, the impact of the air flow on the filter material is more evenly distributed, and the incoming air flow can be optimized, turbulence and dead corners can be reduced, ensuring that the air passes through the filter material evenly, thereby improving the filtration effect, avoiding local excessive wear, and extending the service life of the filter material.

[0044] Embodiment 3: Based on embodiment 2, this embodiment further drives the driving gear 52 to rotate through the driving motor 51, and drives the mounting plate 42 to rotate through the action of the driving gear 52 and the driven gear ring 53, thereby synchronously driving the mounting plates 42 and the filter screen 43 on both sides to rotate, thereby driving the cleaning component 63 to knock the outer surface of the filter screen 43 through the cooperation of the driving component 64 in the mounting plate 42 and the driving component 64, so that the dust on the inner surface of the filter screen 43 falls off through knocking and shaking, and falls to the lower part of the inner surface of the filter screen 43, thereby cleaning the dust on the filter screen 43, reducing the clogging of the filter material, and maintaining the filtering efficiency.

[0045] Specifically, in order to clean the dust in the filter 43, it is necessary to drive the mounting plate 42 and the filter 43 to rotate, see Figure 3 The driving structure 5 includes a driving motor 51 fixedly connected to the lower front end of the cross mounting frame 41 located at the front, and the output end of the driving motor 51 passes through the front end of the cross mounting frame 41 and extends to the rear end of the cross mounting frame 41 and is fixedly connected to a driving gear 52. The outer surface of the driving gear 52 is meshed with a driven gear ring 53 fixedly connected to the outer surface of the mounting plate 42.

[0046] The driving motor 51 drives the driving gear 52 to rotate. During the rotation of the driving gear 52, the driven gear ring 53 is driven to rotate due to the engagement, thereby driving the mounting plate 42 to rotate. The driving motor 51 is a conventional driving device and has been widely used in the prior art. In the present invention, it is only used to realize the function of driving the driving gear 52 and the driven gear ring 53, and its specific installation method, operating principle and wiring method are not described in detail.

[0047] Further, in order to cooperate with the rotation of the mounting plate 42 to clean the dust on the inner surface of the filter screen 43, refer to Figure 7 The cleaning structure 6 includes a support plate 61 fixedly connected to the cross mounting frames 41 on both sides, a rectangular box 62 is fixedly connected to the lower end of the support plate 61, a driving assembly 64 is symmetrically arranged in the inner cavity of the rectangular box 62 and the mounting plates 42 on both sides, and a plurality of cleaning assemblies 63 transmission-connected to the driving assembly 64 are equidistantly distributed in the inner cavity of the rectangular box 62.

[0048] Further, to realize the driving of the cleaning component 63, refer to Figure 8 The driving assembly 64 includes a mounting groove 642 formed on one side of the mounting plate 42 close to the rectangular box 62, and a limiting groove 641 formed on one end of the two mounting grooves 642 away from the rectangular box 62. The inner surfaces of the limiting grooves 641 on both sides are slidably connected with a driven shaft 645 that is rotatably connected to the inner surface of the rectangular box 62. The outer surface of the driven shaft 645 is symmetrically fixedly connected with a driven gear 644 on the left and right. The outer surfaces of the driven gears 644 on both sides are meshed with a driving gear ring 643 installed on the outer arc surface of the mounting groove 642.

[0049] The limiting groove 641 is used to limit the running trajectory of the driven shaft 645, and also prevents the driven shaft 645 from shaking during the rotation of the mounting plate 42. The synchronously arranged driving gear ring 643 will synchronously drive the driven gear 644 to rotate due to the meshing action during the process of following the rotation of the mounting plate 42. The driven gear 644 will drive the driven shaft 645 to rotate during the rotation, thereby driving the cleaning component 63 to operate.

[0050] Further, in order to knock and beat the filter 43 from the outside and cause the dust attached to the inner surface to fall off, refer to Fig. 9The cleaning component 63 includes a spiral cam 635 fixedly connected to the outer surface of the driven shaft 645, and the limit rod 631 is symmetrically fixedly connected to the top wall of the inner cavity of the rectangular box 62. The lower ends of the two limit rods 631 are slidably connected with a U-shaped block 633. The inner surface of the horizontal part of the U-shaped block 633 is fixedly connected with a connecting rod 634. The outer surface of the connecting rod 634 is in close contact with the outer surface of the spiral cam 635. The lower end of the vertical part of the U-shaped block 633 is in close contact with the outer surface of the filter screen 43. The upper end of the U-shaped block 633 is symmetrically fixedly connected with a compression spring 632 fixedly connected to the rear top wall of the inner cavity of the rectangular box 62. The two compression springs 632 are respectively sleeved on the outer surfaces of adjacent limit rods 631.

[0051] The driven shaft 645 rotates to drive the spiral cam 635 to rotate. Since the spiral cam 635 is spiral, the U-shaped block 633 is pushed up along the limit rod 631 through the connecting rod 634 periodically during the rotation process, and the compression spring 632 is compressed.

[0052] The spiral cam 635 is similar to a volute, and there is a vertically connected portion between its outer arc surface and inner arc surface. When the driven gear 644 passes over the vertex of the maximum outer diameter of the spiral cam 635, the U-shaped block 633 will continue to move downward under the action of the compression spring 632 and impact the outer surface of the filter screen 43. A rubber block is provided at the lower part of the U-shaped block 633 to avoid damaging the filter screen 43 while impacting.

[0053] This impact from outside to inside can shake off the dust attached to the inner surface of the filter 43, causing it to fall off and fall to the lower part of the inner surface of the filter 43.

[0054] Embodiment 4. Based on Embodiment 3, this embodiment utilizes the function of the air inlet 713 to receive the residual air in the distribution pipe 441, and forms a negative pressure in the dust suction pipe 712 through the function of the connecting pipe 711 and the guide plate 714, so as to draw the air in the dust collecting component 74 through the dust suction pipe 712, and utilizes this suction force to absorb the dust in the dust collecting groove 743 and discharge it to the outside of the equipment through the connecting pipe 711, thereby reducing the dust residue in the filter net 43, reducing the clogging of the filter material, and further maintaining the filtration efficiency.

[0055] Specifically, to clean the dust in the filter 43, refer to Fig.10 The dust exhaust structure 7 includes a spiral feed plate 72 fixedly mounted on the inner surface of the filter screen 43 and a cleaning brush 73 mounted on the lower end of the distribution pipe 441 through a bracket. The lower brush of the cleaning brush 73 is attached to the surface of the spiral feed plate 72 and the lower end of the brush is in close contact with the inner surface of the filter screen 43. The mounting plate 42 at the rear is provided with a dust collecting component 74 fixedly connected to the rear of the lower end of the cleaning brush 73. The rear of the upper end of the cleaning brush 73 is provided with a dust exhaust component 71 that bypasses the swirl component 44 and is connected to the rear end of the filter bin 2.

[0056] The cleaning brush 73 is connected to the lower end of the distribution pipe 441. During the rotation of the filter 43, the brush at its lower part will continuously clean the lower part of the inner surface of the filter 43. At the same time, the spiral feed plate 72 arranged on the inner surface of the filter 43 can rotate with the filter 43. Due to the action of the spiral feed plate 72 and the cleaning brush 73, the dust falling on the lower part of the inner surface of the filter 43 will gradually move backwards and finally enter the dust collecting component 74.

[0057] Further, to achieve dust removal, see Fig.11 and Fig.12 The dust exhaust component 71 includes a connecting pipe 711, the front end of the connecting pipe 711 passes through the rear end of the filter bin 2, extends to the inner cavity of the distribution pipe 441 and is fixedly connected to an air inlet 713 connected to the inner cavity of the distribution pipe 441, and the rear part of the lower end of the connecting pipe 711 is fixedly connected to a dust suction pipe 712 connected to its inner cavity, and a guide plate 714 opening backwards is fixedly connected at the junction of the connecting pipe 711 and the dust suction pipe 712, and the lower end of the dust suction pipe 712 is fixedly connected to the upper end of the cleaning brush 73 and is connected to the dust collecting component 74 through the cleaning brush 73.

[0058] The connecting pipe 711 is connected to the outside, and the part thereof located inside the distribution pipe 441 is also connected to the air inlet 713. The air inlet 713 is trumpet-shaped, and can receive the air in the distribution pipe 441 and communicate with the outside through the connecting pipe 711, thereby forming an airflow in the connecting pipe 711. Under the action of the guide plate 714, the airflow in the connecting pipe 711 will draw the air in the dust suction pipe 712, thereby forming a driven airflow inside the dust suction pipe 712, thereby drawing the dust in the filter 43 through the dust collecting component 74.

[0059] Further, in order to realize the function of cooperating with the dust exhaust component 71 to exhaust the dust from the filter 43, refer to Fig.11 The dust collecting assembly 74 includes a dust collecting groove 743 opened on the inner surface of the mounting plate 42 at the rear, the dust collecting groove 743 is connected to the tail end of the spiral feeding plate 72, and an arc-shaped dust hood 742 is slidably connected to the inner surface of the dust collecting groove 743. A through hole is opened on the side of the arc-shaped dust hood 742 facing the rotation direction, and a connecting pipe 741 communicating with its inner cavity is fixedly connected to the inner arc surface of the arc-shaped dust hood 742, and the upper end of the connecting pipe 741 passes through the lower end of the cleaning brush 73 and extends to the upper end of the cleaning brush 73 to communicate with the dust suction pipe 712.

[0060] The dust collecting trough 743 is connected to the rear end of the spiral feeding plate 72. The dust will eventually fall into the dust collecting trough 743 after being transported by the spiral feeding plate 72 and cleaned by the cleaning brush 73. The arc-shaped dust hood 742 fits against the inner wall of the dust collecting trough 743. When the dust suction pipe 712 draws air from the arc-shaped dust suction hood 742 through the connecting pipe 741, the air in the dust collecting trough 743 will be drawn through the arc-shaped dust suction hood 742, and the dust will be carried along and sent to the outside of the device through the connecting pipe 741, the dust suction pipe 712 and the connecting pipe 711.

[0061] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A separation and filtration device for a vacuum negative pressure machine, comprising a filtration chamber (2), characterized in that: The inner cavity of the filter chamber (2) is provided with a cyclone filter structure (4); the front end of the filter chamber (2) is fixedly connected with an air inlet pipe (1) in communication with the cyclone filter structure (4); the rear end of the filter chamber (2) is fixedly connected with an air outlet pipe (3) in communication with its inner cavity; the upper portion of the outer surface of the cyclone filter structure (4) is provided with a cleaning structure (6); the front portion of the inner cavity of the filter chamber (2) is provided with a driving structure (5) for driving the cyclone filter structure (4); and the lower portion of the inner cavity of the cyclone filter structure (4) is provided with a dust removal structure (7) that penetrates the cyclone filter structure (4) and the filter chamber (2) and extends to the rear end of the filter chamber (2); The cyclone filter structure (4) comprises cross mounting frames (41) symmetrically distributed front and rear and fixedly connected to the inner cavity of the filter bin (2); two ends of the cross mounting frames (41) close to each other are rotatably connected to a mounting plate (42); two ends of the cross mounting frames (41) close to each other are fixedly connected to a cyclone assembly (44) in communication with the air intake pipe (1); the cyclone assembly (44) comprises a distribution pipe (441); The cleaning structure (6) comprises a support plate (61) fixedly connected to the cross mounting frames (41) on both sides, a rectangular box (62) fixedly connected to the lower end of the support plate (61), a driving assembly (64) symmetrically arranged in the inner cavity of the rectangular box (62) and the mounting plates (42) on both sides, and a plurality of cleaning assemblies (63) in transmission connection with the driving assembly (64) are equidistantly arranged in the inner cavity of the rectangular box (62); The driving assembly (64) comprises a mounting groove (642) formed on one side of the mounting plate (42) close to the rectangular box (62), and two limiting grooves (641) formed on one end of the two mounting grooves (642) away from the rectangular box (62), the inner surfaces of the limiting grooves (641) on both sides being slidably connected to a driven shaft (645) rotatably connected to the inner surface of the rectangular box (62), the outer surface of the driven shaft (645) being symmetrically fixedly connected to a driven gear (644), and the outer surfaces of the driven gears (644) on both sides being meshed with a driving gear ring (643) mounted on the outer arc surface of the mounting groove (642); The cleaning component (63) comprises a spiral cam (635) fixedly connected to the outer surface of the driven shaft (645); the top wall of the inner cavity of the rectangular box (62) is symmetrically fixedly connected to a limit rod (631); the lower ends of the two limit rods (631) are slidably connected to a U-shaped block (633); the inner surface of the horizontal part of the U-shaped block (633) is fixedly connected to a connecting rod (634); the outer surface of the connecting rod (634) is in close contact with the outer surface of the spiral cam (635); the lower end of the vertical part of the U-shaped block (633) is in close contact with the outer surface of the filter screen (43); the upper end of the U-shaped block (633) is symmetrically fixedly connected to a compression spring (632) fixedly connected to the rear top wall of the inner cavity of the rectangular box (62); the two compression springs (632) are respectively sleeved on the outer surfaces of adjacent limit rods (631); The dust discharge structure (7) comprises a cleaning brush (73) mounted on the lower end of the distribution pipe (441) via a bracket, and a dust discharge component (71) is arranged at the rear of the upper end of the cleaning brush (73) and bypasses the swirl component (44) and is connected to the rear end of the filter bin (2); The dust exhaust component (71) comprises a connecting pipe (711), the front end of the connecting pipe (711) passes through the rear end of the filter bin (2) and extends to the inner cavity of the distribution pipe (441) and is fixedly connected to an air inlet (713) connected to the inner cavity of the distribution pipe (441); the rear portion of the lower end of the connecting pipe (711) is fixedly connected to a dust suction pipe (712) connected to the inner cavity of the connecting pipe (711); a guide plate (714) with an opening facing backward is fixedly connected at the junction of the connecting pipe (711) and the dust suction pipe (712); the lower end of the dust suction pipe (712) is fixedly connected to the upper end of the cleaning brush (73) and is connected to the dust collection component (74) through the cleaning brush (73); The dust collecting assembly (74) comprises a dust collecting groove (743) provided on the inner surface of the mounting plate (42) at the rear, the dust collecting groove (743) being connected to the rear end of the spiral feeding plate (72), the inner surface of the dust collecting groove (743) being slidably connected with an arc-shaped dust collecting hood (742), a through hole being provided on the side of the arc-shaped dust collecting hood (742) facing the rotation direction, a connecting pipe (741) being connected to the inner cavity of the arc-shaped dust collecting hood (742) being fixedly connected to the inner arc surface, the upper end of the connecting pipe (741) passing through the lower end of the cleaning brush (73) and extending to the upper end of the cleaning brush (73) to be connected with the dust collecting pipe (712).

2. A separation and filtration device for a vacuum negative pressure machine according to claim 1, characterized in that: A filter screen (43) is fixedly mounted on one end of the two mounting plates (42) close to each other, a swirl assembly (44) connected to the air intake pipe (1) is fixedly connected on one end of the two cross mounting frames (41) close to each other, and the front lower part of the cross mounting frame (41) located at the front is fixedly connected to the driving structure (5).

3. A separation and filtration device for a vacuum negative pressure machine according to claim 2, characterized in that: The swirl assembly (44) comprises a distribution pipe (441), the front and rear portions of the outer surface of the distribution pipe (441) are fixedly connected to the inner surface of an adjacent cross mounting frame (41), the outer surface of the distribution pipe (441) is provided with a plurality of groups of swirl holes (442) in communication with the inner cavity thereof at equal intervals, the swirl holes (442) in the same group are distributed in an annular shape, the inner surface of the distribution pipe (441) is provided with a plurality of guide rings (443) at equal intervals and fixedly connected, the guide rings (443) being located at the rear of adjacent swirl holes (442) and being in the shape of a hollow cone.

4. A separation and filtration device for a vacuum negative pressure machine according to claim 2, characterized in that: The driving structure (5) comprises a driving motor (51) fixedly connected to the lower front end of the cross mounting frame (41) located at the front, the output end of the driving motor (51) passes through the front end of the cross mounting frame (41) at the front, extends to the rear end of the cross mounting frame (41) and is fixedly connected to a driving gear (52), and the outer surface of the driving gear (52) is meshed with a driven gear ring (53) fixedly connected to the outer surface of the mounting plate (42).

5. A separation and filtration device for a vacuum negative pressure machine according to claim 2, characterized in that: The dust removal structure (7) comprises a spiral feed plate (72) fixedly mounted on the inner surface of the filter screen (43); the lower brush of the cleaning brush (73) is attached to the surface of the spiral feed plate (72) and the lower end of the brush is in close contact with the inner surface of the filter screen (43); and the mounting plate (42) at the rear is provided with a dust collecting assembly (74) fixedly connected to the rear of the lower end of the cleaning brush (73).

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