Dust filtering device

Abstract

The utility model discloses a dust filtering device which comprises a shell, a connecting pipe is installed in the shell, one end of the connecting pipe extends out of the shell, a collecting box is installed in the shell, the other end of the connecting pipe extends into an inner cavity of the collecting box, and a plurality of first through holes are formed in the other end of the connecting pipe. A pipe cavity of the connecting pipe is communicated with an inner cavity of the collecting box through the first through hole, a filter plate is installed at the open end of the shell, and the open end of the collecting box is sealed and covered through the filter plate. According to the utility model, waste gas flows into the collecting box through the connecting pipe, and dust in the waste gas is collected by utilizing the collecting box, so that the device has the advantages of low cost, no energy consumption and easiness in cleaning; the end cover is used for sealing the other end of the connecting pipe, on one hand, waste gas can only flow into the collecting box through the first through hole, high-pressure gas is formed by the waste gas through sudden change of the hole diameter of the first through hole, and the waste gas rapidly penetrates through the first through hole to flow into the collecting box; on the other hand, dust attached to the inner surface of the filter plate is prevented from falling back into the connecting pipe.

Description

Technical Field

[0001] This utility model relates to the field of dust filtration technology, and more specifically, to a dust filtration device. Background Technology

[0002] During the granulation process, due to the addition of powdered raw materials such as calcium carbonate, talc, and color powder, the incompletely plasticized powdered raw materials will be discharged through the vent. Over time, a large amount of dust will fall on the machine and the ground, which is difficult to clean and has a serious impact on the operating environment.

[0003] Currently, the common practice is to add VOC exhaust for unified filtration. However, for machines that are scattered, the cost of unified VOC collection for a single machine is high, and the subsequent maintenance and energy costs are also high.

[0004] Therefore, a new solution is needed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dust filtration device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dust filtration device includes a housing, a connecting pipe installed inside the housing, one end of the connecting pipe extending outside the housing, a collection box installed inside the housing, the other end of the connecting pipe extending into the inner cavity of the collection box, a plurality of first through holes being provided at the other end of the connecting pipe, and the lumen of the connecting pipe communicating with the inner cavity of the collection box through the first through holes, and a filter plate being installed at the open end of the housing, and the filter plate sealing the open end of the collection box.

[0008] Furthermore, the inner surface of the filter plate is provided with an end cap that is adapted to the other end of the connecting pipe, and the end cap seals the other end of the connecting pipe.

[0009] Furthermore, the bottom of the collection box is provided with an integral sleeve, which is adapted to the connecting pipe and is sleeved onto the connecting pipe.

[0010] Furthermore, a guide plate is installed inside the collection box. The guide plate has a trumpet-shaped structure and a second through hole is opened at the bottom of the guide plate. The connecting pipe passes through the second through hole of the guide plate, and there is a gap between the pipe wall of the connecting pipe and the edge of the second through hole.

[0011] Furthermore, the inner wall of the collection box is provided with a raised strip, and the top edge of the guide plate is provided with a flange. The guide plate is installed in the collection box through the abutting fit between the flange and the raised strip.

[0012] Furthermore, a flange is installed at one end of the connecting pipe.

[0013] Furthermore, the outer wall of the collection box is provided with a handle, and the housing is provided with a groove corresponding to the handle position.

[0014] The beneficial effects of this utility model are:

[0015] 1. In this utility model, the exhaust gas flows into the collection box through the connecting pipe, and the dust in the exhaust gas is collected by the collection box, which has the advantages of low cost, no energy consumption and easy cleaning.

[0016] 2. In this utility model, by setting an end cap on the inner surface of the filter plate and sealing the other end of the connecting pipe with the end cap, on the one hand, the exhaust gas can only flow into the collection box through the first through hole. At the same time, by using the sudden change in the diameter of the first through hole, the exhaust gas is formed into high-pressure gas, so that the exhaust gas quickly passes through the first through hole and flows into the collection box, thereby facilitating the collection of dust. On the other hand, it prevents the dust adhering to the inner surface of the filter plate from falling back into the connecting pipe.

[0017] 3. In this utility model, by setting a guide plate, on the one hand, the dust can slide down along the inclined surface of the guide plate to the bottom of the collection box, and on the other hand, the guide plate plays a blocking role to prevent the dust from floating upward.

[0018] 4. In this utility model, the inner wall of the collection box is provided with a raised strip, and the top edge of the guide plate is provided with a flange. The guide plate is installed in the collection box through the abutting fit between the flange and the raised strip. On the one hand, the raised strip supports the guide plate through the flange, so that the guide plate is installed in the collection box; on the other hand, the guide plate is detachably connected to the collection box, which facilitates the disassembly and assembly of the guide plate and the cleaning of the collection box. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a dust filtration device in this embodiment;

[0020] Figure 2 This is a cross-sectional view of the dust filtration device in this embodiment;

[0021] Figure 3 for Figure 2 Enlarged view of section A;

[0022] Figure 4 This is an exploded structural diagram of the dust filtration device in this embodiment;

[0023] Figure 5 This is a cross-sectional view of the shell in this embodiment;

[0024] Figure 6 This is a schematic diagram of one structure of the filter plate in this embodiment;

[0025] Figure 7 This is a schematic diagram of one structure of the collection box in this embodiment;

[0026] Figure 8 This is a schematic diagram of one structure of the guide plate in this embodiment.

[0027] Reference numerals: 1. Housing; 2. Connecting pipe; 3. Collection box; 4. First through hole; 5. Filter plate; 6. End cap; 7. Sleeve; 8. Guide plate; 9. Second through hole; 10. Raised bar; 11. Flange; 12. Handle; 13. Groove; 14. Exhaust pipe; 15. Mounting hole; 16. Mounting groove; 17. Mounting block; 18. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example: A dust filtration device, such as Figures 1-8 As shown, the device includes a housing 1, inside which a connecting pipe 2 is installed. The connecting pipe 2 is integrated with the housing 1. One end of the connecting pipe 2 passes through the housing 1 and extends to the outside of the housing 1. A flange 12 is installed at one end of the connecting pipe 2. The dust filter device is installed on the exhaust pipe 15 of the granulator using the flange 12. Specifically, an installation hole 16 adapted to the connecting pipe 2 is opened on the exhaust pipe 15 of the granulator. One end of the connecting pipe 2 is inserted into the installation hole 16, and the flange 12 is fixed to the exhaust pipe 15 with bolts, so that the dust filter device can be installed on the exhaust pipe 15. At the same time, the connecting pipe 2 is connected to the exhaust pipe 15 through the installation hole 16.

[0030] Furthermore, a collection box 3 is installed inside the housing 1, and the other end of the connecting pipe 2 extends into the inner cavity of the collection box 3. The other end of the connecting pipe 2 is provided with multiple first through holes 4, and the cavity of the connecting pipe 2 is connected to the inner cavity of the collection box 3 through the first through holes 4. With the above structural design, the exhaust gas in the exhaust pipe 15 can flow to the collection box 3 through the connecting pipe 2, and the dust in the exhaust gas can be collected by the collection box 3.

[0031] Furthermore, the upper end of the housing 1 is open to facilitate the disassembly and assembly of the collection box 3; the upper end of the collection box 3 is also open to facilitate the cleaning of dust inside the collection box 3; a filter plate 5 is installed at the open end of the housing 1, and the open end of the collection box 3 is sealed by the filter plate 5, that is, when the filter plate 5 seals the open end of the housing 1, the open end of the collection box 3 is also sealed simultaneously. This structural design reduces the cost of the dust filtration device and facilitates the disassembly, assembly, and cleaning of the collection box 3. By setting up the filter plate 5, dust leakage can be prevented; the filter plate 5 can be a fiber filter plate, sintered plastic plate, sintered plate, or other filter plate that has both dust filtration and air permeability.

[0032] Preferably, the filter plate 5 is detachably connected to the housing 1 and the collection box 3, such as by a snap-fit ​​connection. Figure 3 As shown, the end face of the open end of the collection box 3 is lower than the end face of the open end of the housing 1. The open end of the collection box 3 and the open end of the housing 1 form an installation groove 17. The edge of the filter plate 5 is provided with an installation block 18 that is adapted to the installation groove 17. The filter plate 5 is installed on the open end of the housing 1 and the open end of the collection box 3 by the snap-fit ​​cooperation of the installation block 18 and the installation groove 17.

[0033] Furthermore, such as Figure 2 and Figure 3 As shown, the inner surface of the filter plate 5 is provided with an end cap 6 that is adapted to the other end of the connecting pipe 2. The end cap 6 is used to seal the other end of the connecting pipe 2. When the filter plate 5 seals the open end of the housing 1, the other end of the connecting pipe 2 is also sealed. By sealing the other end of the connecting pipe 2 with the end cap 6, on the one hand, the exhaust gas can only flow into the collection box 3 through the first through hole 4. At the same time, the sudden change in the diameter of the first through hole 4 forms high-pressure gas, which allows the exhaust gas to quickly pass through the first through hole 4 and flow into the collection box 3, thereby facilitating the collection of dust. On the other hand, it prevents the dust adhering to the inner surface of the filter plate 5 from falling back into the connecting pipe 2.

[0034] Furthermore, such as Figure 2 and Figure 7 As shown, the bottom of the collection box 3 is provided with a sleeve 7. The sleeve 7 is inside the collection box 3 and is integrated with the collection box 3. The sleeve 7 is adapted to the connecting pipe 2 and is sleeved onto the connecting pipe 2. By setting the sleeve 7, on the one hand, the sleeve 7 is used to connect the connecting pipe 2 to improve the stability of the installation of the collection box 3. On the other hand, by using the sleeve 7 and the collection box 3 as an integral unit, dust is prevented from leaking from the collection box 3 where the connecting pipe 2 penetrates.

[0035] Preferably, the end face of the top of the sleeve 7 is located below the first through hole 4. This structural design prevents the sleeve 7 from covering the first through hole 4 and thus affecting dust collection.

[0036] Furthermore, such as Figure 2 and Figure 8 As shown, a guide plate 8 is installed inside the collection box 3. The guide plate 8 has a trumpet-shaped structure, and a second through hole 9 is opened at the bottom of the guide plate 8. The connecting pipe 2 passes through the second through hole 9 of the guide plate 8, and there is a gap between the pipe wall of the connecting pipe 2 and the edge of the second through hole 9. By setting the guide plate 8, on the one hand, dust can slide down along the inclined surface of the guide plate 8 to the bottom of the collection box 3; on the other hand, the guide plate 8 acts as a barrier to prevent dust from floating upwards. The second through hole 9 at the bottom of the guide plate 8 allows dust to slide down to the bottom of the collection box 3. At the same time, the size of the second through hole 9 needs to be controlled to avoid the second through hole 9 being too large, which would cause too much dust to float upwards.

[0037] like Figure 2 , Figure 7 and Figure 8 As shown, the inner wall of the collection box 3 is provided with a raised strip 10, and the top edge of the guide plate 8 is provided with a flange 11. The guide plate 8 is installed in the collection box 3 through the abutting fit between the flange 11 and the raised strip 10. With the above structural design, on the one hand, the raised strip 10 supports the guide plate 8 through the flange 11, so that the guide plate 8 is installed in the collection box 3; on the other hand, the guide plate 8 is detachably connected to the collection box 3, which facilitates the disassembly and assembly of the guide plate 8 and the cleaning of the collection box 3.

[0038] Furthermore, a handle 13 is provided on the outer wall of the collection box 3, and a groove 14 is provided on the housing 1 corresponding to the position of the handle 13; by providing the handle 13, the collection box 3 can be taken out from the housing 1 by lifting the handle 13.

[0039] When using the aforementioned dust filtration device, first insert one end of the connecting pipe 2 into the mounting hole 16 on the granulator exhaust pipe 15, and then fix the flange 12 to the exhaust pipe 15 with bolts to install the dust filtration device on the exhaust pipe 15. Since the connecting pipe 2 is connected to the exhaust pipe 15 through the mounting hole 16, when exhaust gas is introduced into the exhaust pipe 15, the exhaust gas can flow through the connecting pipe 2 to the collection box 3, where the collection box 3 collects the dust in the exhaust gas. When it is necessary to clean the dust in the collection box 3, remove the filter plate 5 to detach it from the housing 1 and the collection box 3. Then, use the lifting handle 13 to remove the collection box 3 from the housing 1, and then remove the guide plate 8 from the collection box 3 to clean it. The number of dust filtration devices installed on the exhaust pipe 15 is not limited to one; multiple devices can be installed as needed to further improve the dust collection effect.

[0040] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A dust filtering device comprising a housing (1), characterized in that, A connecting pipe (2) is installed inside the housing (1). One end of the connecting pipe (2) extends outside the housing (1). A collection box (3) is installed inside the housing (1). The other end of the connecting pipe (2) extends into the inner cavity of the collection box (3). A plurality of first through holes (4) are opened at the other end of the connecting pipe (2), and the cavity of the connecting pipe (2) is connected to the inner cavity of the collection box (3) through the first through holes (4). A filter plate (5) is installed at the open end of the housing (1), and the open end of the collection box (3) is sealed by the filter plate (5).

2. A dust filtering device according to claim 1, characterized in that The inner surface of the filter plate (5) is provided with an end cap (6) that is adapted to the other end of the connecting pipe (2), and the end cap (6) seals the other end of the connecting pipe (2).

3. A dust filtering device according to claim 1, characterized in that The bottom of the collection box (3) is provided with an integral sleeve (7), which is adapted to the connecting pipe (2) and is sleeved to the connecting pipe (2).

4. A dust filtering device according to claim 1, characterized in that The collection box (3) is equipped with a guide plate (8), which has a trumpet-shaped structure. A second through hole (9) is provided at the bottom of the guide plate (8). The connecting pipe (2) passes through the second through hole (9) of the guide plate (8), and there is a gap between the pipe wall of the connecting pipe (2) and the edge of the second through hole (9).

5. A dust filtration device according to claim 4, characterized in that, The inner wall of the collection box (3) is provided with a protrusion (10), and the top edge of the guide plate (8) is provided with a flange (11). The guide plate (8) is installed in the collection box (3) through the abutment of the flange (11) and the protrusion (10).

6. A dust filtration device according to claim 1, characterized in that, A flange (12) is installed at one end of the connecting pipe (2).

7. A dust filtering device according to claim 1, characterized in that The outer wall of the collection box (3) is provided with a handle (13), and the shell (1) is provided with a groove (14) corresponding to the handle (13).

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