A composite felt coated filter bag

Abstract

The utility model discloses a composite felt coated filter bag, comprising a filter bag body, a keel located inside the filter bag body and a limiting sleeve sleeved on the outer side of the top of the filter bag body, wherein a limiting expansion ring is arranged on the top of the filter bag body, a clamping flange is arranged on the top of the keel, limiting grooves are formed on the clamping flange and the limiting sleeve in cooperation with the limiting expansion ring, a fixing column is hinged on the limiting sleeve, a locking groove is formed on the clamping flange in cooperation, a locking column is threadedly provided on the fixing column, a locking knob is arranged on the top of the locking column, a limiting plate is arranged on the fixing column, an elastic telescopic structure is arranged between the limiting plate and the fixing column, and a limiting structure is arranged between the limiting plate and the locking knob. The utility model can improve the installation stability of the filter bag body and facilitate the installation and disassembly of the filter bag body.

Description

Technical Field

[0001] The utility model relates to the technical field of filter bags, and more specifically, to a composite felt coating filter bag. Background Art

[0002] Composite felt coated filter bags play an important role in the industrial filtration process. They can effectively capture fine particles in gases or liquids, improve filtration efficiency, and ensure product quality and a clean production environment.

[0003] The existing composite felt coated filter bag is mainly installed on the flower plate structure by cooperating with the keel structure when filtering dust particles in the gas. The existing installation method is mainly fixed by bolts. In this way, when installing and disassembling the filter bag, the bolts need to be repeatedly screwed, and the installation and disassembly convenience is poor;

[0004] In addition, the existing filter bag body has poor installation stability at the top during use, and is easily dropped off due to force vibration during use, resulting in poor stability in use. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the utility model provides a composite felt coated filter bag to solve the technical problems mentioned in the background technology that the composite felt coated filter bag in the prior art is difficult to install and disassemble, and has poor stability in use.

[0007] (II) Technical solution

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A composite felt coated filter bag comprises a filter bag body, a keel located inside the filter bag body and a limiting sleeve mounted on the outside of the top of the filter bag body, wherein a limiting expansion ring is arranged on the top of the filter bag body, a clamping flange is arranged on the top of the keel, and limiting grooves are formed on the clamping flange and the limiting sleeve to cooperate with the limiting expansion ring, a fixing column is hinged on the limiting sleeve, a locking groove is formed on the clamping flange, a locking column is threadedly arranged on the fixing column, a locking knob is arranged on the top of the locking column, a limiting plate is arranged on the fixing column, an elastic telescopic structure is arranged between the limiting plate and the fixing column, and a limiting structure is arranged between the limiting plate and the locking knob.

[0010] The utility model is further configured such that the elastic telescopic structure includes a telescopic groove opened on the fixed column, a telescopic column is provided at the bottom end of the limit plate, the bottom end of the telescopic column is slidably located in the telescopic groove, and a spring is provided between the telescopic groove and the inner wall of the telescopic groove, and the telescopic installation of the limit plate in the groove can be realized through the cooperation of the telescopic groove, the telescopic column and the spring.

[0011] The utility model is further configured such that the limiting structure includes a limiting protrusion arranged on the limiting plate, and a limiting slot is cooperatively provided on the locking knob, the limiting protrusion and the limiting slot are engaged with each other, and the rotational limiting between the limiting plate and the locking knob can be achieved through the cooperation between the limiting protrusion and the limiting slot.

[0012] The utility model is further configured as follows: the filter bag body includes a first needle punched felt layer and a second needle punched felt layer, an anti-stretching layer is arranged between the first needle punched felt layer and the second needle punched felt layer, a first protective coating is arranged on the outer side of the first needle punched felt layer, and a second protective coating is arranged on the inner side of the second needle punched felt layer, and the first protective coating and the second protective coating are preferably PTFE coatings, so that the wear-resistant protective effect of the inner and outer surfaces of the filter bag body can be enhanced.

[0013] The utility model is further configured that a sealing sleeve is arranged on the outer side of the limiting sleeve, and a sealing gasket is arranged on the top of the sealing sleeve to strengthen the connection sealing between the limiting sleeve and the external installation flower plate.

[0014] The utility model is further configured such that multiple layers of folded sections are evenly distributed on the filter bag body, and the folded sections can increase the expansion amplitude of the filter bag body during cleaning, thereby improving the filtering performance of the filter bag body.

[0015] The utility model is further configured that a fixing hole is provided on the limiting sleeve to facilitate stable connection between the limiting sleeve and the external mounting flower plate.

[0016] The utility model is further configured that a screwing block is provided on the locking knob to improve the convenience of screwing the locking knob.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a composite felt coated filter bag, which has the following beneficial effects:

[0019] 1. The utility model comprises a filter bag body, a keel located inside the filter bag body and a limiting sleeve sleeved on the outer side of the top of the filter bag body, wherein a limiting expansion ring is arranged on the top of the filter bag body, a clamping flange is arranged on the top of the keel, and limiting grooves are formed on the clamping flange and the limiting sleeve to cooperate with the limiting expansion ring. In this way, when the filter bag body is installed, the limiting expansion ring on the filter bag body is placed in the limiting groove on the limiting sleeve, and the clamping flange on the keel is clamped on the limiting sleeve, and the limiting expansion ring is located in the corresponding limiting groove. In this way, the limiting expansion ring can be limitedly engaged between the clamping flange and the limiting sleeve through the cooperation of the two groups of limiting grooves, thereby improving the stability of the filter bag body during installation.

[0020] 2. The utility model has a fixing column hinged on the limiting sleeve, a locking groove is cooperatively provided on the clamping flange, a locking column is threadedly provided on the fixing column, and a locking knob is provided on the top of the locking column. In this way, when the locking and fixing between the clamping flange and the limiting sleeve is realized, the fixing column is rotated, and the locking column is driven to rotate by the rotating column and is stuck in the locking groove, so that the locking screw is located at the top of the clamping flange, and the locking knob is tightened, and the locking column is driven to rotate by the locking knob, so that the locking column drives the locking knob to descend and press on the clamping flange, thereby realizing the locking and fixing between the clamping flange and the limiting sleeve. In this way, when disassembling, the locking knob is loosened, and the fixing column is rotated to realize the disassembly of the clamping flange, thereby facilitating the disassembly of the filter bag body.

[0021] 3. The utility model provides a limit plate on the fixed column, an elastic telescopic structure is provided between the limit plate and the fixed column, and a limit structure is provided between the limit plate and the locking knob, wherein the elastic telescopic structure includes a telescopic slot provided on the fixed column, a telescopic column is provided at the bottom end of the limit plate, the bottom end of the telescopic column is slidably located in the telescopic slot, and a spring is provided between the bottom end of the telescopic column and the inner wall of the telescopic slot, the limit structure includes a limit protrusion provided on the limit plate, and a limit slot is provided on the locking knob, and the limit protrusion and the limit slot are interlocked. The locking knob is used to lock the locking flange and the locking sleeve, and the locking knob is used to lock the locking flange and the locking sleeve, so that the locking flange can be locked in the locking groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a composite felt coating filter bag in the utility model;

[0023] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;

[0024] Figure 3 For this utility model Figure 1 A is a magnified view of the local structure of the middle part;

[0025] Figure 4 It is a schematic diagram of the structure of the utility model;

[0026] Figure 5 It is a schematic diagram of the partial structure of the filter bag body in the utility model.

[0027] In the figure: 1. filter bag body; 2. keel; 3. limiting sleeve; 4. limiting expansion ring; 5. clamping flange; 6. limiting groove; 7. fixing column; 8. locking groove; 9. locking column; 10. locking knob; 11. limiting plate; 12. telescopic groove; 13. telescopic column; 14. spring; 15. limiting protrusion; 16. limiting slot; 17. first needle-punched felt layer; 18. second needle-punched felt layer; 19. anti-stretching layer; 20. first protective coating; 21. second protective coating; 22. sealing sleeve; 23. sealing gasket; 24. folding section; 25. fixing hole; 26. screw block. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0031] See also Figure 1-5A composite felt coated filter bag comprises a filter bag body 1, a keel 2 located inside the filter bag body 1 and a limiting sleeve 3 sleeved on the outside of the top of the filter bag body 1, wherein a limiting expansion ring 4 is arranged on the top of the filter bag body 1, and a clamping flange 5 is arranged on the top of the keel 2. A limiting groove 6 is formed on the clamping flange 5 and the limiting sleeve 3 to cooperate with the limiting expansion ring 4. In this way, when the filter bag body 1 is installed, the limiting expansion ring 4 on the filter bag body 1 is placed in the limiting groove 6 on the limiting sleeve 3, and the clamping flange 5 on the keel 2 is clamped on the limiting sleeve 3, and the limiting expansion ring 4 is located in the corresponding limiting groove 6. In this way, the cooperation of the two sets of limiting grooves 6 can realize the limiting engagement of the limiting expansion ring 4 between the clamping flange 5 and the limiting sleeve 3, thereby improving the stability of the filter bag body 1 during installation.

[0032] The utility model is hinged with a fixing column 7 on the limiting sleeve 3, and a locking groove 8 is provided on the clamping flange 5. A locking column 9 is threadedly provided on the fixing column 7, and a locking knob 10 is provided on the top of the locking column 9. In this way, when the clamping flange 5 and the limiting sleeve 3 are locked and fixed, the fixing column 7 is rotated, and the locking column 9 is driven to rotate by the rotating column and is stuck in the locking groove 8, so that the locking screw is located at the top of the clamping flange 5, and the locking knob 10 is tightened, and the locking knob 10 is driven to rotate by the locking knob 10, so that the locking column 9 drives the locking knob 10 to descend and be pressed on the clamping flange 5, so as to realize the locking and fixing between the clamping flange 5 and the limiting sleeve 3. In this way, when disassembling, the locking knob 10 is loosened, and the fixing column 7 is rotated to realize the disassembly of the clamping flange 5, thereby facilitating the disassembly of the filter bag body 1.

[0033] The utility model provides a limiting plate 11 on the fixed column 7, an elastic telescopic structure is provided between the limiting plate 11 and the fixed column 7, and a limiting structure is provided between the limiting plate 11 and the locking knob 10, wherein the elastic telescopic structure includes a telescopic groove 12 provided on the fixed column 7, a telescopic column 13 is provided at the bottom end of the limiting plate 11, the bottom end of the telescopic column 13 is slidably located in the telescopic groove 12, and a spring 14 is provided between the limiting structure and the inner wall of the telescopic groove 12, the limiting structure includes a limiting protrusion 15 provided on the limiting plate 11, and a limiting card groove 16 is provided on the locking knob 10, and the limiting protrusion 15 and the limiting groove 6 are engaged with each other.

[0034] During the rotation of the locking knob 10, the limit plate 11 is controlled to move downward so that the limit protrusion is located inside the locking groove 8. After the locking and fixation between the clamping flange 5 and the limit sleeve 3 is achieved by the locking knob 10, under the action of the spring 14, the telescopic column 13 is controlled to move upward in the telescopic groove 12, and the limit plate 11 is driven by the telescopic column 13 to drive the limit protrusion to move upward and engage in the limit groove 6 at the bottom end of the locking knob 10. The cooperation between the limit protrusion 15 and the limit groove 6 can limit the rotation of the locking knob 10, thereby improving the locking effect of the locking knob 10 on the clamping flange 5.

[0035] See also Figure 1-Figure 5 As an embodiment of the filter bag body 1: the filter bag body 1 includes a first needle felt layer 17 and a second needle felt layer 18, an anti-stretching layer 19 is arranged between the first needle felt layer 17 and the second needle felt layer 18, a first protective coating 20 is arranged on the outer side of the first needle felt layer 17, and a second protective coating 21 is arranged on the inner side of the second needle felt layer 18;

[0036] The anti-stretching layer 19 includes a P84 fiber layer arranged inside the first needle-punched felt layer 17, a PPS fiber layer is arranged inside the P84 fiber layer, and a glass fiber layer is arranged inside the PPS fiber layer. The anti-stretching effect of the filter bag body 1 can be achieved through the cooperation between the P84 fiber layer, the PPS fiber layer and the glass fiber layer.

[0037] The first protective coating 20 and the second protective coating 21 are preferably PTFE film coatings.

[0038] See also Figure 1-Figure 5 As an implementation of the limiting sleeve 3 , a sealing sleeve 22 is arranged on the outer side of the limiting sleeve 3 , and a sealing gasket 23 is arranged on the top of the sealing sleeve 22 .

[0039] Specifically, the sealing performance of the connection between the limiting sleeve 3 and the external mounting plate can be enhanced through the cooperation between the sealing sleeve 22 and the sealing gasket 23 .

[0040] See also Figure 1-Figure 5 As an implementation of the dust removal filter bag: multiple layers of folded sections 24 are evenly distributed on the filter bag body 1.

[0041] Specifically, when the filter bag body 1 is pulse-backwashed for cleaning, the expansion amplitude of the filter bag body 1 can be increased, thereby improving the cleaning effect of the filter bag body 1 . Meanwhile, the filtration area of ​​the filter bag body 1 can be enlarged by setting the folding section 24 , thereby improving the filtration effect of the filter bag body 1 .

[0042] See also Figure 1-Figure 5 As an implementation method of xxx: a fixing hole 25 is opened on the limit sleeve 3, and external bolts and other fixing parts are passed through the fixing hole 25 to connect and fix with the external mounting flower plate, so as to achieve a stable connection between the limit sleeve 3 and the external mounting flower plate.

[0043] See also Figure 1-Figure 5 As an implementation of the locking knob 10 , a screw block 26 is provided on the locking knob 10 .

[0044] Specifically, the provision of the screwing block 26 can improve the screwing convenience of the locking knob 10 .

[0045] In summary, when the overall equipment is in use:

[0046] Pass external bolts or other fixing parts through the fixing holes 25 and connect and fix them to the external mounting plate, so as to achieve a stable connection between the limit sleeve 3 and the external mounting plate;

[0047] Extend the keel 2 into the filter bag body 1, and extend the filter bag body 1 from the bottom into the limiting sleeve 3, so that the limiting ring 4 at the top of the limiting sleeve 3 is located in the limiting groove 6 on the limiting sleeve 3 and the clamping flange 5, and the locking groove 8 on the limiting sleeve 3 corresponds to the fixing column 7 and the locking column 9;

[0048] Afterwards, the fixing column 7 is rotated, and the locking column 9 is driven to rotate through the rotating column, and is clamped into the locking groove 8, so that the locking screw is located at the top of the clamping flange 5, and the locking knob 10 is tightened, and the locking column 9 is driven to rotate through the locking knob 10, so that the locking column 9 drives the locking knob 10 to descend and press on the clamping flange 5, so as to realize the locking fixation between the clamping flange 5 and the limiting sleeve 3;

[0049] During this process, the limit plate 11 is pressed, so that the spring 14 is in a compressed state. The limit plate 11 drives the limit protrusion 15 to be located in the locking groove 8. After the locking and fixation between the clamping flange 5 and the limit sleeve 3 is achieved by the locking knob 10, the clamping force is released. Under the action of the spring 14, the telescopic column 13 is controlled to move upward in the telescopic groove 12, and the limit plate 11 is driven by the telescopic column 13 to drive the limit protrusion to move upward and engage in the limit groove 6 at the bottom end of the locking knob 10. The cooperation between the limit protrusion 15 and the limit groove 6 can limit the rotation of the locking knob 10, thereby improving the locking effect of the locking knob 10 on the clamping flange 5.

[0050] In all the schemes mentioned above, the connection between two parts can be selected according to the actual situation by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably considered to be welding. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents;

[0051] In all the schemes mentioned above, the operation of electrical components is controlled by a controller. Since the devices matched with the controller are commonly used devices, their control principles and line connections are all existing well-known and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A composite felt-coated filter bag, comprising a filter bag body (1), a keel (2) located inside the filter bag body (1), and a limiting sleeve (3) sleeved on the outside of the top of the filter bag body (1), wherein: A limiting expansion ring (4) is arranged at the top of the filter bag body (1), and a clamping flange (5) is arranged at the top of the keel (2). The filter bag body (1) is characterized in that: a limiting groove (6) is provided on the clamping flange (5) and the limiting sleeve (3) in cooperation with the limiting expansion ring (4); a fixing column (7) is hingedly connected to the limiting sleeve (3); a locking groove (8) is provided on the clamping flange (5); a locking column (9) is threadedly arranged on the fixing column (7); a locking knob (10) is arranged at the top of the locking column (9); a limiting plate (11) is arranged on the fixing column (7); an elastic telescopic structure is arranged between the limiting plate (11) and the fixing column (7); and a limiting structure is arranged between the limiting plate (11) and the locking knob (10).

2. The composite felt coated filter bag according to claim 1, characterized in that: The elastic telescopic structure comprises a telescopic slot (12) provided on a fixed column (7); a telescopic column (13) is provided at the bottom end of the limiting plate (11); the bottom end of the telescopic column (13) is slidably located in the telescopic slot (12), and a spring (14) is provided between the telescopic column and the inner wall of the telescopic slot (12).

3. The composite felt coated filter bag according to claim 2, characterized in that: The limiting structure comprises a limiting protrusion (15) arranged on the limiting plate (11), and a limiting slot (16) is provided on the locking knob (10), wherein the limiting protrusion (15) and the limiting slot (6) are mutually engaged.

4. The composite felt coated filter bag according to claim 1, characterized in that: The filter bag body (1) comprises a first needle-punched felt layer (17) and a second needle-punched felt layer (18); an anti-stretching layer (19) is arranged between the first needle-punched felt layer (17) and the second needle-punched felt layer (18); a first protective coating (20) is arranged on the outer side of the first needle-punched felt layer (17); and a second protective coating (21) is arranged on the inner side of the second needle-punched felt layer (18).

5. The composite felt coated filter bag according to claim 1, characterized in that: A sealing sleeve (22) is arranged on the outer side of the limiting sleeve (3), and a sealing gasket (23) is arranged on the top end of the sealing sleeve (22).

6. A composite felt coated filter bag according to any one of claims 1 to 5, characterized in that: The filter bag body (1) has multiple layers of folded sections (24) evenly distributed up and down.

7. The composite felt coated filter bag according to claim 1, characterized in that: The limiting sleeve (3) is provided with a fixing hole (25).

8. The composite felt coated filter bag according to claim 1, characterized in that: The locking knob (10) is provided with a screwing block (26).

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