Dust filtering structure

Abstract

The utility model discloses a dust filtering structure, and belongs to the technical field of veterinary drug preparation. Comprising a first filtering mechanism and a second filtering mechanism; the first filtering mechanism comprises a first filter cartridge, an upper sealing head, a first exhaust port, a plurality of first filter elements, a partition plate, a first air inlet, a pressing plate and a supporting frame; the second filtering mechanism comprises a second filter cartridge, a second exhaust port, an end cover, a second filter element, a second air inlet and a plurality of supporting rods, the second filter element is connected with the second exhaust port, and the first exhaust port is connected with the second air inlet; a protruding ring is coaxially arranged at the top end of the first filter element, the first filter element penetrates through the partition plate downwards, and the protruding ring abuts against the upper side of the partition plate. The pressing plate is fixed to the partition plate through a plurality of bolts and abuts against the upper side of the protruding ring, and a lower vent hole is formed in the pressing plate and corresponds to a center hole of each first filter element. The supporting frame abuts against the middle of the upper side of the pressing plate, and the multiple bolts are arranged around the supporting frame. The supporting rod is located under the second air inlet, located above the second filter element and perpendicular to the second filter cylinder.

Description

Technical Field

[0001] The utility model belongs to the technical field of veterinary drug preparation, and particularly relates to a dust filtering structure, especially for a vacuum feeding machine. Background Art

[0002] As Figure 1 shown, it is a preparation flow chart of veterinary drug powder containing traditional Chinese medicine. The traditional Chinese medicine needs to be crushed and dried before mixing. In previous production, dust-free production was not required. However, in the latest standard, dust-free production is required.

[0003] To ensure dust-free production, dust filtering structures need to be set in the crushing process, mixing process, bagging process, etc.

[0004] For example, a patent with the application number CN201820557298.X discloses a vacuum feeding machine, which includes an actuating valve, a filter plate, a filter cartridge, a first filter element, a cone, a second filter element and a high-pressure vortex blower. The actuating valve is installed on the upper part of the upper cover. An air extraction pipe is installed on the upper part of the upper cover. The right end of the air extraction pipe is installed at the connecting pipe opening on the upper part of the small gland. A cylindrical spiral compression spring is installed at the connection part between the air extraction pipe and the small gland. The small gland is installed on the filter element cartridge. The second filter element is installed inside the filter element cartridge. The filter element cartridge is communicated with the high-pressure vortex blower through a pipeline. The high-pressure vortex blower is fixed on the blower seat. The upper cover is installed on the upper part of the filter cartridge. The filter cartridge and the upper cover are fixedly connected by a collar. A filter plate is installed between the filter cartridge and the upper cover. The filter plate is fixed on the upper part of the filter cartridge through a filter seat. The first filter element is installed inside the filter cartridge. An anti-blowing air bag is installed on the filter cartridge. A quick exhaust valve is installed on the upper part of the anti-blowing air bag. An electromagnetic reversing valve is installed on the right side of the anti-blowing air bag. An oil filter pressure regulating valve is installed on the right side of the electromagnetic reversing valve. A cone is installed at the lower part of the filter cartridge. The filter cartridge and the cone are fixedly connected by a collar. A pneumatic butterfly valve is installed at the lower part of the cone. The cone and the pneumatic butterfly valve are fixedly connected by a clamp. A clamp seal is installed on the clamp. A bottom grid is installed at the lower part of the pneumatic butterfly valve.

[0005] The patent with the application number CN202222131747.3 discloses a vacuum feeding device for centrifuge filter media, which includes a feeding component, a bag dust removal box body component, a bag self-cleaning device component, a secondary filter, a negative pressure power machine component, an exhaust pipe, a negative pressure air pipe and two hose clamps. The top flange of the feeding component is vertically and hermetically installed by connecting with the bottom flange of the bag dust removal box body component. The upper flange of the bag dust removal box body component and the lower flange of the bag self-cleaning device component are fixedly and hermetically connected by several screws. One end of the exhaust pipe is fixedly communicated with the bag self-cleaning device component through a hose clamp. The other end of the exhaust pipe is connected with the upper ventilation pipe on the side of the secondary filter and is fixedly communicated with a hose clamp. The flange at one end of the negative pressure air pipe is fixed to the flange above the secondary filter, and the flange at the other end of the negative pressure air pipe is connected with the negative pressure power machine component.

[0006] The existing dust filtering structure includes a vertically arranged first filtering mechanism, a horizontally arranged second filtering mechanism, etc. The first filtering mechanism includes a vertically arranged first filter cartridge, a detachable upper head at the top of the first filter cartridge, a first exhaust port at the top of the upper head, multiple vertically arranged first filter elements in the first filter cartridge, a horizontally arranged partition plate in the upper part of the first filter cartridge, a first air inlet in the lower part of the first filter cartridge, etc. The top ends of the first filter elements are fixed on the partition plate. The second filtering mechanism includes a horizontally arranged second filter cartridge (much smaller than the first filter cartridge), a second exhaust port at one end of the second filter cartridge, a detachable end cover at the other end of the second filter cartridge, horizontally arranged second filter elements in the second filter cartridge, a second air inlet at the top of the second filter cartridge, etc. The second filter elements are connected to the second exhaust port, and the first exhaust port is connected to the second air inlet through a pipeline. In the prior art, both the upper head and the second filter cartridge can be formed by stamping thin steel plates. When the corresponding filter elements are blocked, the upper head or the second filter cartridge will bear a large pressure, resulting in easy deformation of the upper head or the second filter cartridge. Utility Model Content

[0007] In order to solve the above problems, the embodiment of the present utility model provides a dust filtering structure, which strengthens the upper head and the second filter cartridge respectively by using a support frame and a support rod to avoid deformation. The technical solution is as follows:

[0008] An embodiment of the utility model provides a dust filtering structure, which includes a vertically arranged first filtering mechanism and a horizontally arranged second filtering mechanism; the first filtering mechanism includes a vertically arranged first filter cartridge 10, an upper head 11 detachably arranged at the top of the first filter cartridge 10, a first exhaust port 12 at the top of the upper head 11, a plurality of vertically arranged first filter elements 13 in the first filter cartridge 10, a partition plate 14 horizontally arranged at the upper part of the first filter cartridge 10, and a first air inlet 15 at the lower part of the first filter cartridge 10. The top end of the first filter element 13 is fixed on the partition plate 14; the second filtering mechanism includes a horizontally arranged second filter cartridge 20, a second exhaust port 21 at one end of the second filter cartridge 20, an end cover detachably arranged at the other end of the second filter cartridge 20, a second filter element 23 horizontally arranged in the second filter cartridge 20, and a second air inlet 24 at the top of the second filter cartridge 20. The second filter element 23 is connected to the second exhaust port 21, and the first exhaust port 12 is connected to the second air inlet 24 through a pipeline; a convex ring 16 is coaxially arranged at the top end of the first filter element 13, a round hole 17 matching the first filter element 13 is arranged on the partition plate 14, the first filtering mechanism further includes a pressing plate 18 directly above the partition plate 14 and a support frame 19 on the lower side of the upper head 11 and directly below the first exhaust port 12. The first filter element 13 passes downward through the round hole 17, and the convex ring 16 presses against the upper side of the partition plate 14; the pressing plate 18 is fixed to the partition plate 14 by a plurality of bolts 1, presses against the upper side of the convex ring 16, and has lower ventilation holes 2 corresponding to the central holes of each first filter element 13; the support frame 19 presses against the middle part of the upper side of the pressing plate 18, and the plurality of bolts 1 are arranged around the support frame 19; the second filtering mechanism further includes a plurality of support rods 22 arranged side by side in the second filter cartridge 20; the support rods 22 are directly below the second air inlet 24, above the second filter element 23, and perpendicular to the second filter cartridge 20.

[0009] Specifically, the pressing plate 18 in the embodiment of the utility model is a circular plate coaxially arranged with the first filter cartridge 10, and its diameter is smaller than the inner diameter of the first filter cartridge 10; the plurality of bolts 1 are evenly distributed around the center of the pressing plate 18.

[0010] Specifically, the number of the first filter elements 13 in the embodiment of the utility model is N + 1, and it includes a central filter element at the center of the partition plate 14 and N edge filter elements evenly distributed around the central filter element; the N edge filter elements are located on the same circle concentric with the partition plate 14; the support frame 19 is a U-shaped structure, and an upper ventilation hole 3 matching the lower ventilation hole 2 is arranged at the bottom of the support frame 19 and directly above the central filter element.

[0011] Further, a sealing ring 4 is arranged outside the first filter element 13 and below the convex ring 16, and the sealing ring 4 presses against the upper side of the partition plate 14.

[0012] Among them, the bolt 1 in the embodiment of the present utility model is vertically arranged, the lower end thereof is fixed on the partition plate 14, and a nut is provided above the bolt and on the upper side of the pressing plate 18, and the bolt passes upward through the pressing plate 18 and is locked by the nut.

[0013] Further, the support frame 19 in the embodiment of the present utility model is fixed on the lower side of the flange plate, the flange plate is fixed in the middle of the lower side of the upper head 11, and the first exhaust port 12 is fixed on the upper side of the flange plate and passes upward through the upper head 11.

[0014] Specifically, the second exhaust port 21 and the second filter element 23 in the embodiment of the present utility model are both located in the lower part of the second filter cartridge 20 and their axes are directly below the axis of the second filter cartridge 20, and the support rod 22 is located in the upper part of the second filter cartridge 20 and is horizontally arranged.

[0015] Specifically, the first filter element 13 in the embodiment of the present utility model is a non-woven fabric filter element, and the second filter element 23 is a folded paper filter element and its outer diameter is larger than the outer diameter of the first filter element 13.

[0016] The beneficial effects brought by the technical solution provided by the embodiment of the present utility model are as follows: The embodiment of the present utility model provides a dust filtering structure, which respectively uses a support frame and a support rod to strengthen the upper head and the second filter cartridge to avoid deformation. Specifically, the support frame has two functions: one is to support the upper head to avoid deformation; the other is to press the pressing plate to ensure the sealing between the first filter element and the partition plate. The support rod has two functions: one is to support the second filter cartridge to avoid deformation of the second filter cartridge; the other is to cause turbulence, reduce the wind speed, and disperse the dust. In addition, the first filter element of this patent is easy to replace. Description of the Drawings

[0017] Figure 1 is the preparation flow chart of veterinary powder;

[0018] Figure 2 is the structural schematic diagram of the dust filtering structure provided by the embodiment of the present utility model;

[0019] Figure 3 is Figure 2 the partial enlarged view of;

[0020] Figure 4 is the structural schematic diagram of the combination of the pressing plate, the partition plate and the first filter element;

[0021] Figure 5 is the structural schematic diagram of the upper head.

[0022] In the figure: 1 bolt, 2 lower ventilation hole, 3 upper ventilation hole, 4 sealing ring;

[0023] 10 The first filter cartridge, 11 the upper head, 12 the first exhaust port, 13 the first filter element, 14 the partition plate, 15 the first air inlet, 16 the convex ring, 17 the round hole, 18 the pressing plate, 19 the support frame;

[0024] 20 The second filter cartridge, 21 the second exhaust port, 22 the support rod, 23 the second filter element, 24 the second air inlet. Specific embodiments

[0025] To make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Embodiment 1

[0027] See Figure 2-5 , Embodiment 1 provides a dust filtering structure, including a vertically arranged first filtering mechanism and a horizontally arranged second filtering mechanism, etc. The first filtering mechanism is connected to the second filtering mechanism through a pipeline.

[0028] Among them, the first filtering mechanism includes a first filter cartridge 10, an upper head 11, a first exhaust port 12, multiple first filter elements 13, a partition plate 14, a first air inlet 15, a pressing plate 18, a support frame 19, etc. The first filter cartridge 10 is vertically arranged, which is a cylindrical structure with a conical bottom. The upper head 11 is arranged at the top of the first filter cartridge 10, and it is detachably arranged (fixed by a hoop or a locking member), which is a disc structure with an upward arc-shaped protrusion. The first exhaust port 12 is arranged at the top of the upper head 11 (at the center of the upper head 11), and it is specifically a vertically arranged circular pipe. The first filter element 13 is located inside the first filter cartridge 10, its upper end is detachably arranged on the partition plate 14, it is vertically arranged, it is a non-woven fabric filter element or a cloth bag filter element, etc., and a convex ring 16 is coaxially arranged at its top. Specifically, the number of the first filter elements 13 is N + 1, and it includes 1 central filter element located at the center of the partition plate 14 and N edge filter elements evenly distributed around the central filter element. The N edge filter elements are located on the same circle concentric with the partition plate 14. The partition plate 14 is horizontally arranged, which is located in the upper part of the first filter cartridge 10, it is a circular plate, it is located adjacent to the lower part of the upper head 11, and it is provided with N + 1 round holes 17 with clearance fit with the first filter elements 13. The first air inlet 15 is arranged at the lower part of the first filter cartridge 10, and it is specifically a horizontally arranged circular pipe. The pressing plate 18 is located directly above the partition plate 14, it is a circular plate coaxially arranged with the first filter cartridge 10, its diameter is smaller than the inner diameter of the first filter cartridge 10 (slightly smaller, specifically 5 - 8 cm smaller), it is fixed to the partition plate 14 by multiple bolts 1, it presses on the upper side of the convex ring 16, and it is provided with lower ventilation holes 2 (a total of N + 1) corresponding to the central holes of each first filter element 13. The N + 1 first filter elements 13 respectively pass downward through the N + 1 round holes 17, and a sealing ring 4 is arranged outside the first filter elements 13 on the lower side of the convex ring 16, and the sealing ring 4 presses on the upper side of the partition plate 14. Specifically, the multiple bolts 1 are evenly distributed around the center of the pressing plate 18 (at the same time, the multiple bolts 1 are arranged around the support frame 19). The bolts 1 are vertically arranged, their lower ends are fixed on the partition plate 14, nuts are arranged on the upper side of the bolts 1 and located above the pressing plate 18, and they pass upward through the pressing plate 18 and are locked by nuts. The support frame 19 is fixed to the lower side of the upper head 11, it is located directly below the first exhaust port 12, it is a U-shaped structure, and an upper ventilation hole 3 matched with the lower ventilation hole 2 is arranged on its bottom (horizontal arm) and directly above the central filter element, and it presses on the middle part of the upper side of the pressing plate 18. The sizes of the lower ventilation hole 2, the upper ventilation hole 3 and the central hole of the first filter element 13 are equal.

[0029] In this embodiment, the first filter element 13 is convenient to disassemble and assemble. The support frame 19 has two functions: one is to support the upper head 11 to avoid deformation; the other is to press the pressing plate 18 to ensure the sealing between the first filter element 13 and the partition plate 14.

[0030] Among them, the second filtering mechanism includes a second filter cartridge 20, a second exhaust port 21, an end cap, a second filter element 23, a second air inlet 24, multiple support rods 22, etc. The second filter cartridge 20 is horizontally arranged and is a cylindrical tube with one end closed and the other end open. The second exhaust port 21 is arranged at one end of the second filter cartridge 20 and is a circular tube arranged along the direction of the second filter cartridge 20. The end cap is located at the other end of the second filter cartridge 20 and is detachably (fixed by a hoop or a locking member, etc.) arranged on the second filter cartridge 20, and it is specifically a circular cover. The second filter element 23 is located inside the second filter cartridge 20, is horizontally arranged, is arranged along the direction of the second filter cartridge 20, is connected to the second exhaust port 21, and is specifically a pleated filter element, etc., and its outer diameter is larger than the outer diameter of the first filter element 13. Specifically, both the second exhaust port 21 and the second filter element 23 are located at the lower part of the second filter cartridge 20 and their axes are directly below the axis of the second filter cartridge 20. Multiple support rods 22 are arranged side by side. The support rods 22 are located in the upper part inside the second filter cartridge 20, are directly below the second air inlet 24, are above the second filter element 23, are perpendicular to the second filter cartridge 20, and are horizontally arranged.

[0031] In this embodiment, the support rods 22 have two functions: one is to support the second filter cartridge 20 to prevent the second filter cartridge 20 from deforming; the other is to cause turbulence, reduce the wind speed, and disperse the dust.

[0032] Among them, the first exhaust port 12 is connected to the second air inlet 24 through a pipeline (specifically a steel wire hose).

[0033] Furthermore, in the embodiment of the present utility model, the first filtering mechanism further includes a flange. The flange is fixed to the middle part of the lower side of the upper head 11, is coaxially arranged with the upper head 11, and can also strengthen the upper head 11. The support frame 19 is fixed (specifically, hermetically fixed) to the lower side of the flange, and the first exhaust port 12 is fixed to the upper side of the flange and passes upward through the upper head 11.

[0034] Embodiment 2

[0035] Embodiment 2 provides a dust filtering structure, whose structure is basically the same as that of Embodiment 1, and the differences are as follows: the number of the first filter elements 13 in this embodiment is nine, including one central filter element and eight edge filter elements. Correspondingly, the number of the round holes 17 is nine. The number of the bolts 1 is four, and the four bolts 1 are arranged in a rectangle.

[0036] Embodiment 3

[0037] Embodiment 3 provides a dust filtering structure, whose structure is basically the same as that of Embodiment 1, except that: in this embodiment, the second filter cartridge 20 is arranged in the left-right direction, with an end cap provided at its left end and a second exhaust port 21 provided at its right end. The second filter element 23 is arranged in the left-right direction, and its right end is connected to the second exhaust port 21 (inserted or threadedly connected). The number of support rods 22 is three, and they are arranged in the front-back direction. The distance between two adjacent support rods 22 is 0.5 - 1.0 cm.

[0038] Embodiment 4

[0039] Embodiment 4 provides a dust filtering structure, whose structure is basically the same as that of Embodiment 1, except that: in this embodiment, the outer diameter of the first filter cartridge 10 is 50 cm, and the outer diameter of the second filter cartridge 20 is 20 cm. The upper end head 11, the second filter cartridge 20 and the support frame 19 are all stamped from stainless steel plates with a thickness of 3 mm.

[0040] Among them, the "first" and "second" in this embodiment are only for distinction and have no other special meanings.

[0041] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A dust filtering structure, comprising a vertically arranged first filtering mechanism and a horizontally arranged second filtering mechanism; the first filtering mechanism includes a vertically arranged first filter cartridge (10), an upper head (11) detachably arranged at the top of the first filter cartridge (10), a first exhaust port (12) at the top of the upper head (11), a plurality of first filter elements (13) vertically arranged in the first filter cartridge (10), a partition plate (14) horizontally arranged at the upper part of the first filter cartridge (10), and a first air inlet (15) at the lower part of the first filter cartridge (10), the top end of the first filter element (13) being fixed on the partition plate (14); the second filtering mechanism includes a horizontally arranged second filter cartridge (20), a second exhaust port (21) at one end of the second filter cartridge (20), an end cap detachably arranged at the other end of the second filter cartridge (20), a second filter element (23) horizontally arranged in the second filter cartridge (20), and a second air inlet (24) at the top of the second filter cartridge (20), the second filter element (23) being connected to the second exhaust port (21), and the first exhaust port (12) being connected to the second air inlet (24) through a pipeline; characterized in that, A convex ring (16) is coaxially arranged at the top end of the first filter element (13), a round hole (17) matching the first filter element (13) is arranged on the partition plate (14), the first filtering mechanism further includes a pressing plate (18) directly above the partition plate (14) and a support frame (19) on the lower side of the upper head (11) and directly below the first exhaust port (12), the first filter element (13) passes downward through the round hole (17), and the convex ring (16) presses against the upper side of the partition plate (14); the pressing plate (18) is fixed to the partition plate (14) by a plurality of bolts (1), presses against the upper side of the convex ring (16), and has lower ventilation holes (2) corresponding to the central holes of each first filter element (13) thereon; the support frame (19) presses against the middle of the upper side of the pressing plate (18), and the plurality of bolts (1) are arranged around the support frame (19); the second filtering mechanism further includes a plurality of support rods (22) arranged side by side in the second filter cartridge (20); the support rods (22) are directly below the second air inlet (24), are above the second filter element (23), and are perpendicular to the second filter cartridge (20).

2. The dust filtering structure according to claim 1, wherein, The pressing plate (18) is a circular plate coaxially arranged with the first filter cartridge (10), and its diameter is smaller than the inner diameter of the first filter cartridge (10); the plurality of bolts (1) are evenly distributed around the center of the pressing plate (18).

3. The dust filtering structure according to claim 2, wherein, The number of the first filter elements (13) is N + 1, and they include a central filter element at the center of the partition plate (14) and N edge filter elements evenly distributed around the central filter element; the N edge filter elements are located on the same circle concentric with the partition plate (14); the support frame (19) is of a U-shaped structure, and an upper ventilation hole (3) matching the lower ventilation hole (2) is arranged at the bottom and directly above the central filter element.

4. The dust filtering structure according to claim 1, wherein A sealing ring (4) is arranged on the lower side of the convex ring (16) and outside the first filter element (13), and the sealing ring (4) presses against the upper side of the partition plate (14).

5. The dust filtering structure according to claim 1, wherein The bolt (1) is vertically arranged, its lower end is fixed on the partition plate (14), and a nut is provided above it and on the upper side of the pressing plate (18). It passes upward through the pressing plate (18) and is locked by the nut.

6. The dust filtering structure according to claim 1, characterized in that, The support frame (19) is fixed on the lower side of the flange, the flange is fixed in the middle of the lower side of the upper head (11), and the first exhaust port (12) is fixed on the upper side of the flange and passes upward through the upper head (11).

7. The dust filtering structure according to claim 1, wherein, Both the second exhaust port (21) and the second filter element (23) are located in the lower part of the second filter cartridge (20), and their axes are directly below the axis of the second filter cartridge (20). The support rod (22) is located in the upper part of the second filter cartridge (20) and is horizontally arranged.

8. The dust filtering structure according to claim 1, characterized in that The first filter element (13) is a non-woven fabric filter element, and the second filter element (23) is a folded paper filter element with an outer diameter larger than that of the first filter element (13).

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