Sealing device of industrial dust removal equipment and pre-filtering bin

Abstract

The utility model provides a sealing device of industrial dust removal equipment, which is used for connecting an air inlet of the industrial dust removal equipment with a pre-filtering bag and comprises a fixing plate, a base plate, a rubber mat and a pressing plate which are sequentially connected in series through bolts or rivets. The air inlet penetrates through a first assembling hole in the base plate, a second assembling hole in the rubber mat and a third assembling hole in the pressing plate, the rubber mat is matched with the air inlet to guarantee sealing performance, the base plate and the pressing plate play a role in fixing the rubber mat, the pre-filtering bag is assembled on the fixing plate, and a bag opening of the pre-filtering bag is sewn or pasted around the second assembling hole of the rubber mat. According to the pre-filtering bin of the industrial dust removal equipment, the fixing plate, the base plate and the rubber mat with the proper specification are arranged, so that the sealing performance of the equipment is improved, and the technical effect of improving the production safety and the use convenience of the pre-filtering bin of the industrial dust removal equipment is achieved.

Description

Technical Field

[0001] The utility model relates to the field of industrial gas purification and dust removal equipment, and particularly to the sealing field of an industrial gas purification and dust removal device. Background Art

[0002] Industrial gas purification and dust removal equipment generally includes multiple stages of filtration to gradually filter out dust of various particle sizes, so as to improve the filtration effect and protect the filter element. Among them, in the initial filtration stage of certain types of dust removal equipment, a pre-filter bag is used, that is, a bag-shaped device with a filtering function. The mouth of the pre-filter bag is connected to the air inlet. Industrial gas enters the interior of the pre-filter bag from the air inlet, and then passes through the bag wall with micropores of the pre-filter bag. Larger particle impurities are intercepted by the bag wall inside the pre-filter bag, achieving the effect of preliminary filtration.

[0003] For the connection between the air inlet and the pre-filter bag, the conventional method is: sew a circular soft silicone rubber plate at the mouth of the pre-filter bag. The inner diameter of the silicone rubber plate is smaller than the outer diameter of the air inlet, and the two are in interference fit. The elasticity of the silicone rubber plate makes it tightly hoop around the air inlet. However, the air inlet is located at the rear of the pre-filter chamber of the dust removal equipment, and it is impossible to directly operate the socket connection of the two by hand. When the pre-filter bag is pushed into the pre-filter chamber, the deformation of the pre-filter bag and the silicone rubber plate is relatively large, making it not easy to disassemble and assemble, nor easy to align the position of the air inlet. The thickness of the rubber pad is usually selected to be 0.5 mm or thinner. In some dust removal equipment, the gas negative pressure at the air inlet is relatively large, and there is a risk of gas leakage if the thickness or strength of the rubber pad is insufficient. Summary of the Invention

[0004] The utility model provides a sealing device for an industrial dust removal equipment, which can improve the matching accuracy between the pre-filter bag and the air inlet, and improve the disassembly and assembly efficiency and the safety and reliability of the equipment.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A sealing device for an industrial dust removal equipment, used for connecting the air inlet and the pre-filter bag of the industrial dust removal equipment, includes a base plate, a rubber pad, and a pressing plate.

[0007] The base plate is a hard metal plate with a first assembly hole provided in the middle, and the base plate is also provided with a first fastening hole.

[0008] The rubber pad is a soft silicone rubber plate with a second assembly hole provided in the middle, and the rubber pad is provided with a second fastening hole.

[0009] The pressing plate is a hard metal plate or a plastic plate with a third assembly hole provided in the middle, and the pressing plate is provided with a third fastening hole.

[0010] Among them, the inner diameters of the first fastening hole, the second fastening hole, and the third fastening hole are the same, and the quantity and positions are in a corresponding relationship, enabling the three to be sequentially connected in series by fasteners such as bolts or rivets, so that the substrate, the rubber gasket, and the pressing plate can be sequentially press-fitted and assembled together. The air inlet can successively pass through the first assembly hole, the second assembly hole, and the third assembly hole. Among them, the inner diameters of the first assembly hole and the third assembly hole are larger than the outer diameter of the air inlet; the inner diameter of the second assembly hole is smaller than the outer diameter of the air inlet. When the air inlet penetrates, the rubber gasket deforms, and the inner diameter of the second assembly hole expands to be able to pass the air inlet. The cooperation between the rubber gasket and the air inlet ensures the sealing performance, and the substrate and the pressing plate play a role in fixing the rubber gasket.

[0011] The rubber gasket is encapsulated at the bag mouth of the pre-filter bag. The periphery of the bag mouth is sewn or bonded around the second assembly hole of the rubber gasket. Thus, the second assembly hole forms the actual bag mouth of the pre-filter bag. After the air inlet penetrates into the second assembly hole, it is connected to the inside of the pre-filter bag.

[0012] The disassembly and assembly operation of the air inlet and the sealing device is located at the rear of the industrial dust removal equipment. For the convenience of operation, the sealing device further includes a fixing plate. The fixing plate is a hard metal plate that extends from the front of the pre-filter bag to the rear of the pre-filter bag. The pre-filter bag is assembled on the fixing plate by means of a drawstring, Velcro, or pasting, etc. The substrate is also fixedly installed on the fixing plate using bolts or rivets. Therefore, by pushing the fixing plate, the pre-filter bag and the sealing device can be pushed into the interior of the industrial dust removal equipment.

[0013] Regarding the selection of the rubber gasket, through long-term comparative tests, the deformation of the silicone plate is moderate during assembly, saving effort while ensuring sealing. The rubber gasket is most preferably made of silicone plate material, with a thickness of 0.5 mm to 2 mm, most preferably 1 mm, where "mm" is the length unit "millimeter". The selected silicone plate has a hardness between Shore hardness A type 60 and Shore hardness A type 70, most preferably Shore hardness A type 65. When the thickness is less than 0.5 mm or the hardness is less than Shore hardness A type 60, the rubber gasket is too soft, and when the gas negative pressure at the air inlet is too large, the rubber gasket is prone to deformation resulting in gas leakage. When the thickness is greater than 2 mm or the hardness exceeds Shore hardness A type 70, the rubber gasket is too hard, and during disassembly, the barbs formed by the rubber gasket around the air inlet seriously hinder disassembly.

[0014] Further, in order to more accurately and smoothly sleeve the pre-filter bag with the air inlet when pushing it in, when the air inlet is a round pipe with an outer diameter of 128 mm, the first assembly hole on the substrate and the third assembly hole on the pressing plate are round holes with a diameter of 130 mm to 172 mm, that is, the inner diameters of the first assembly hole and the third assembly hole are 1.02 times to 1.34 times the outer diameter of the air inlet; the second assembly hole on the rubber gasket is a round hole with a diameter of 80 mm to 110 mm, that is, the inner diameter of the second assembly hole is 0.63 times to 0.86 times the outer diameter of the air inlet.

[0015] Furthermore, the fixing plate and the substrate are connected by bolts, and can be disassembled and replaced when the rubber pad is damaged or aged.

[0016] Furthermore, when assembling the sealing device, first assemble the rubber pad at the mouth of the pre-filter bag by sewing or gluing, etc., then insert the pressing plate into the pre-filter bag from the second assembly hole of the rubber pad, and cover the substrate on the outside of the bag mouth. Therefore, in order to facilitate assembly, the pressing plate, the rubber pad, and the substrate are fixed by riveting with a rivet.

[0017] Furthermore, in order to ensure the sealing performance, the number of the first fastening holes, the second fastening holes, and the third fastening holes is 3 to 12.

[0018] At the same time, the present invention also provides a pre-filter bin for an industrial dust removal device, including the sealing device, the air inlet, the pre-filter bag, and the bin body for the industrial dust removal device described in the foregoing of this specification. Among them, the air inlet is located at the rear of the bin body and passes through the rear wall of the bin body; the pre-filter bag is located inside the bin body and can be pushed in and pulled out at the front of the bin body; the sealing device is used for sealing the connection between the air inlet and the pre-filter bag.

[0019] In order to facilitate the installation of the sealing device and the cleaning inside the pre-filter bag, the pre-filter bag is divided into two parts, a first bag body and a second bag body, and the two parts can be completely or incompletely disassembled.

[0020] Furthermore, the fixing plate of the sealing device extends to the opposite side of the pre-filter bag away from the bag mouth, and a handle is provided on the fixing plate. When the pre-filter bag is pushed into the pre-filter bin along with the fixing plate, the handle is in front of the pre-filter bin.

[0021] Compared with the prior art, the beneficial effects of the present invention are: by providing a rigid fixing plate and a substrate, when the pre-filter bag is sleeved on the air inlet, the thrust can be effectively transmitted, the force on the bag mouth is uniform, and the process requirements such as the opening size and thickness of the rubber pad are reasonably specified, improving the sealing performance and convenience, and achieving the technical effects of improving the production safety and use convenience of the pre-filter bin of the industrial dust removal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic diagram of the overall structure of the pre-filter bin of the present invention;

[0024] Figure 2It is a schematic structural view of the state where the pre-filter bag of the utility model is pulled out of the pre-filter bin body;

[0025] Figure 3 It is a schematic structural view of the sealing device of the utility model;

[0026] Figure 4 Schematic structural views of the disassembled parts of the sealing device of the utility model;

[0027] Figure 5 It is a schematic structural view of the cross-section of the sealing device of the utility model;

[0028] Figure 6 It is a schematic cross-sectional structural view of the sealing device of the utility model sleeved on the air inlet.

[0029] The parts shown in the figure are:

[0030] 1. Bin body; 2. Pre-filter bag; 21. First bag body; 22. Second bag body; 23. Bag mouth; 3. Fixed plate; 4. Pull handle; 5. Air inlet; 6. Belt; 7. Substrate; 71. First fastening hole; 72. First assembly hole; 8. Rubber pad; 81. Second fastening hole; 82. Second assembly hole; 9. Pressure plate; 91. Third fastening hole; 92. Third assembly hole. Specific implementation manners

[0031] In order to make the above and other features and advantages of the utility model clearer, the utility model will be further described below in conjunction with the drawings. It should be understood that the specific embodiments given herein are for the purpose of explaining to those skilled in the art and are merely exemplary, not restrictive.

[0032] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intermediate elements present at the same time. The terms "front", "rear", "upper", "lower" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0033] Such as Figure 1 , a pre-filter bin of an industrial dust removal device includes a bin body 1 and a pre-filter bag 2, and the pre-filter bag 2 is located inside the bin body 1. A fixed plate 3 is assembled on the pre-filter bag 2, and a pull handle 4 is provided on the fixed plate 3. By pulling the pull handle 4, the fixed plate 3 and the pre-filter bag 2 can be pulled out of the bin body 1, such as Figure 2 , an air inlet 5 is provided at the rear of the bin body 1, and the industrial gas to be filtered enters the pre-filtering process from here.

[0034] Such as Figure 3 , the fixed plate 3 is fixedly assembled on the pre-filter bag 2 through a belt 6. Combining Figure 4, a substrate 7, a rubber pad 8 and a pressing plate 9 are installed behind the fixing plate 3. A first assembly hole 72 is provided in the middle of the substrate 7, and first fastening holes 71 are provided around the first assembly hole 72; a second assembly hole 82 is provided in the middle of the rubber pad 8, and second fastening holes 81 are provided around the second assembly hole 82; a third assembly hole 92 is provided in the middle of the pressing plate 9, and third fastening holes 91 are provided around the third assembly hole 92.

[0035] An embodiment of the sealing device of an industrial dust removal device of the present utility model includes the above-mentioned fixing plate 3, substrate 7, rubber pad 8, and pressing plate 9. Figure 5 It is an assembly structure diagram between the components of the sealing device and with the pre-filter bag 2. There are corresponding fastening holes on the fixing plate 3 and the substrate 7, which can be connected by bolts or rivets, and preferably by bolts, so as to facilitate the replacement of accessories. The rubber pad 8 and the pre-filter bag 2 are connected by sewing, and the sewing thread surrounds the mouth 23 of the pre-filter bag 2 for one week; the positions and numbers of the first fastening holes 71 on the substrate 7, the second fastening holes 81 on the rubber pad 8, and the third fastening holes 91 on the pressing plate 9 correspond, and are assembled by being strung together with bolts or rivets; the inner diameters of the first assembly hole 72 and the third assembly hole 92 are larger than the outer diameter of the air inlet; the inner diameter of the second assembly hole 82 is smaller than the outer diameter of the air inlet 5, and the rubber pad 8 is sleeved outside the air inlet 5 by deforming.

[0036] Figure 6 It is a structural sectional view of the sealing device sleeved on the air inlet 5. The second assembly hole 82 on the rubber pad 8 is smaller than the outer diameter of the air inlet 5. Therefore, when the rubber pad 8 is sleeved on the air inlet 5, it deforms to form barbs facing the air outlet direction of the air inlet 5 (attached Figure 6 to the lower part in the figure). The second assembly hole 82 is enlarged and tightly sleeved around the air inlet 5. When the industrial dust removal device works, there is a gas pressure difference on both sides of the rubber pad 8. If the strength of the rubber pad 8 is insufficient, gas leakage will occur between the second assembly hole 82 and the air inlet 5; if the strength of the rubber pad 8 is too large, when it is necessary to disassemble and pull out the sealing device from the air inlet 5 for maintenance, cleaning or replacement of components, the barbs formed by the deformation of the rubber pad 8 will hinder the disassembly operation, and in severe cases, the air inlet 5 or the rubber pad 8 will be damaged. The main factors affecting the strength of the rubber pad 8 are the material, thickness and hardness of the rubber pad 8. Long-term repeated tests show that the rubber pad 8 is preferably made of silica gel plate material, the thickness is most preferably 1 mm, and the hardness is most preferably 65 of Shore hardness type A. On the premise of ensuring the foregoing functionality, a silica gel plate with a thickness of 0.5 mm to 2 mm and a hardness of 60 to 70 of Shore hardness type A can be selected.

[0037] Note that in order to clearly express the positional relationship of each component and reduce interference elements, bolts or rivets are not shown in the drawings.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sealing device for an industrial dust removal device, used for connecting the air inlet (5) of the industrial dust removal device and the pre-filter bag (2), characterized in that it includes a base plate (7), a rubber gasket (8), and a pressing plate (9); a first assembly hole (72) is provided on the base plate (7), a second assembly hole (82) is provided on the rubber gasket (8), and a third assembly hole (92) is provided on the pressing plate (9). The inner diameters of the first assembly hole (72) and the third assembly hole (92) are larger than the outer diameter of the air inlet (5), and the inner diameter of the second assembly hole (82) is smaller than the outer diameter of the air inlet (5); the rubber gasket (8) is connected to the mouth (23) of the pre-filter bag (2), and the periphery of the mouth (23) is encapsulated around the second assembly hole (82); the base plate (7), the rubber gasket (8), and the pressing plate (9) are sequentially connected and assembled, and the air inlet (5) can sequentially pass through the first assembly hole (72), the second assembly hole (82), and the third assembly hole (92).

2. The sealing device of the industrial dust removal equipment according to claim 1, characterized in that, The sealing device further includes a fixing plate (3), and the pre-filter bag (2) and the base plate (7) are fixedly assembled on the fixing plate (3).

3. The sealing device of the industrial dust removal equipment according to claim 2, characterized in that, The base plate (7) and the fixing plate (3) are connected and assembled by bolts.

4. The sealing device of the industrial dust removal equipment according to claim 2, characterized in that, A handle (4) is provided on the fixing plate (3).

5. The sealing device of the industrial dust removal equipment according to claim 1, characterized in that, The material of the rubber gasket (8) is a silica gel plate.

6. The sealing device of the industrial dust removal equipment according to claim 5, characterized in that, The thickness range of the rubber gasket (8) is between 0.5 mm and 2 mm.

7. The sealing device of the industrial dust removal equipment according to claim 5, characterized in that, The hardness range of the rubber gasket (8) is between Shore hardness A type 60 and Shore hardness A type 70.

8. The sealing device of the industrial dust removal equipment according to claim 1, characterized in that The base plate (7), the rubber gasket (8), and the pressing plate (9) are fixed by a riveting method using blind rivets.

9. A pre-filtering bin of an industrial dust removal device, comprising a bin body (1), an air inlet (5), and a pre-filtering bag (2), characterized in that, It also includes the sealing device for the industrial dust removal device according to any one of claims 1 to 7.

10. The pre-filtering bin of an industrial dust removal device according to claim 9, characterized in that, The pre-filter bag (2) includes a first bag body (21) and a second bag body (22) that can be disassembled.

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