Bag filter

Abstract

The utility model discloses a bag filter and belongs to the technical field of filters. Comprising a filter body which is provided with a detachable filter upper cover; the filter cartridge is arranged in the inner cavity of the filter body; the filter bag is placed in the filter cartridge; the locking sheet detachably covers the water inlet end surface of the filter cartridge, and the locking sheet is fixed through a fastener after the locking sheet presses the opening edge of the filter bag. Through a matching structure which is easy to disassemble and assemble between the locking sheet and the filter cartridge, the replacement process of the filter bag is simplified, and only the filter bag needs to be replaced during cleaning, so that the replacement efficiency is greatly improved, and the downtime of the system is also reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to filter technical field, concretely relates to a bag filter. BACKGROUND

[0002] The filter in water treatment is an important component of water purification system, which is used for removing impurities in water to improve water quality.

[0003] Replacing the filter bag in the filter is an important link in maintaining the filtration system, however, due to the unreasonable structure design of the current filter, the disassembly process is relatively complex, especially when the filter is installed in narrow pipeline, the complex disassembly process will further increase the difficulty of replacing the filter bag. SUMMARY

[0004] The utility model provides a bag filter convenient for replacing filter bag in view of the above problems existing in prior art.

[0005] The utility model can be realized through the following technical schemes:

[0006] A bag filter, comprising:

[0007] A filter body having a detachable filter upper cover;

[0008] A filter cartridge arranged in the inner cavity of the filter body;

[0009] A filter bag placed in the filter cartridge;

[0010] A locking piece detachably covering the water inlet end face of the filter cartridge, the locking piece is fixed through a fastener after the opening edge of the filter bag is pressed tightly.

[0011] As a further improvement of the utility model, the side wall of the filter body is provided with a water inlet and a water outlet which are in communication with the inner cavity thereof.

[0012] As a further improvement of the utility model, the water inlet and the water outlet are both inclinedly arranged and the central axes thereof are located on the same inclined line.

[0013] As a further improvement of the utility model, the water inlet end face of the filter cartridge is located lower than the height of the water inlet and higher than the height of the water outlet.

[0014] As a further improvement of the utility model, the pipe openings of the water inlet and the water outlet are connected with the filter body in a chuck type structure.

[0015] As a further improvement of the utility model, the bottom surface of the locking sheet is provided with a locking pin, and the water inlet end surface of the filter cartridge is provided with a locking groove, the locking pin is matched with the locking groove and forms a rotary locking structure, and the locking and unlocking of the locking sheet on the filter cartridge are realized by rotating the locking sheet.

[0016] As a further improvement of the utility model, a through hole is formed on the surface of the locking sheet to form a hollow structure.

[0017] As a further improvement of the utility model, the top and bottom of the filter body are respectively provided with a filter upper cover and a filter bottom cover, and the filter upper cover, the filter bottom cover and the filter body are connected through a clamp type connecting structure.

[0018] As a further improvement of the utility model, the filter bottom cover is further provided with a drain port.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. The cooperation structure between the locking sheet and the filter cartridge is easy to disassemble and assemble, the replacement process of the filter bag is simplified, only the filter bag needs to be replaced during cleaning, the replacement efficiency is greatly improved, and the downtime of the system is reduced;

[0021] 2. The locking sheet is pressed by the fastener, the replacement can be completed without special tools, and the sealing isolation of the filter bag is realized;

[0022] 3. The water inlet and the water outlet are both inclined and arranged on the same inclined line, so that the whole filter forms a Y-shaped structure, and the arrangement of the water inlet and the water outlet can facilitate the pipeline arrangement on the extrusion equipment and effectively reduce the water flow pressure loss of the filter itself;

[0023] 4. The filter upper cover and the filter bottom cover adopt a quick-change clamp type design, and the filter body can be disassembled without special tools;

[0024] 5. The hollow design of the locking sheet can effectively avoid abnormal noise of the filter caused by excessive water flow and reduce water flow pressure loss;

[0025] 6. The design of the drain port ensures that the water in the filter body can be fully drained when the system is stopped in winter, thereby avoiding the problem of filter damage caused by icing;

[0026] 7. The pipe openings of the water inlet and the water outlet adopt a chuck type structure to connect with the filter body, so that the filter body can be quickly replaced;

[0027] 8. The whole body adopts a stainless steel structure, which greatly improves the service life of the filter. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic view of the bag filter of the utility model.

[0029] In the drawing, 100, filter body; 110, filter upper cover; 120, filter cartridge; 130, filter bag; 140, locking piece; 141, locking pin; 150, fastener; 160, water inlet; 170, water outlet; 180, filter bottom cover; 190, drain port. DETAILED DESCRIPTION

[0030] The following is a specific embodiment of the utility model and further describes the technical method of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0031] As Figure 1 shown, the utility model provides a kind of bag filter, comprising:

[0032] Filter body 100, it has detachable filter upper cover 110;

[0033] Filter cartridge 120, it is set in the inner cavity of filter body 100;

[0034] Filter bag 130, it is placed in filter cartridge 120;

[0035] Locking piece 140, it is detachably covered on the water inlet end face of filter cartridge 120, locking piece 140 is fixed after the opening edge of filter bag 130 is pressed tightly by fastener 150.

[0036] Specifically, the cleaning steps of the bag filter are as follows:

[0037] 1, open quick change joint, remove filter upper cover 110 and sealing gasket;

[0038] 2, unscrew each fastener 150 to ensure that locking piece 140 can rotate freely;

[0039] 3, rotate locking piece 140 to the angle that can be removed, and remove locking piece 140;

[0040] 4, remove filter bag 130 that needs to be cleaned, and replace new filter bag 130;

[0041] 5, put in locking piece 140 again and rotate to locking angle;

[0042] 6, tighten each fastener 150, ensure that locking piece 140 is not loose;

[0043] 7, cover filter upper cover 110 and sealing gasket, and lock quick change joint.

[0044] It is worth mentioning that the replacement process of the filter bag 130 is simplified by the easily disassembled cooperation structure between the locking piece 140 and the filter cartridge 120, and only the filter bag 130 needs to be replaced during cleaning, which greatly improves the replacement efficiency and reduces the downtime of the system.

[0045] In addition, the fastener 150 can be tightened by a knurled screw, which can be replaced without special tools, and the locking piece 140 is also sealed and isolated after being tightened. The filter body 100, the filter cartridge 120, the filter bag 130, the locking piece 140, and the knurled screw are all made of stainless steel, which greatly improves the service life of the filter.

[0046] Preferably, the side wall of the filter body 100 is provided with a water inlet 160 and a water outlet 170 which are connected with the inner cavity of the filter body 100. The water inlet 160 and the water outlet 170 are both inclined and their central axes are on the same inclined line, so that the entire filter forms a Y-shaped structure. This arrangement of the water inlet 160 and the water outlet 170 can facilitate the pipeline layout on the extrusion equipment and effectively reduce the water flow pressure loss of the filter itself.

[0047] Preferably, the position of the water inlet end face of the filter cartridge 120 is lower than the height of the water inlet 160 and higher than the height of the water outlet 170, which ensures that after water enters the water inlet 160, it will first pass through the filter bag 130 for filtration and then be discharged from the water outlet 170, thereby achieving water filtration.

[0048] Preferably, the pipe openings of the water inlet 160 and the water outlet 170 adopt a chuck type structure to connect with the filter body 100, which can achieve the purpose of quickly replacing the filter body 100.

[0049] Preferably, the bottom surface of the locking piece 140 is provided with a locking pin 141, and the water inlet end face of the filter cartridge 120 is provided with a locking groove. The locking pin 141 cooperates with the locking groove to form a rotary locking structure. The locking and unlocking of the locking piece 140 on the filter cartridge 120 are achieved by rotating the locking piece 140, which facilitates the disassembly and installation of the locking piece 140.

[0050] Preferably, the locking piece 140 is provided with a through hole to form a hollow structure, which can effectively avoid the problem of abnormal noise of the filter caused by excessive water flow and reduce the pressure loss of the water flow.

[0051] Preferably, the bottom of the filter body 100 is also provided with a filter bottom cover 180. The filter upper cover 110, the filter bottom cover 180, and the filter body 100 are connected by a clamp type connection structure, which can disassemble the filter body 100 without special tools.

[0052] Preferably, the filter bottom cover 180 is further provided with a drain port 190, which can ensure that the water in the filter body 100 is fully drained when the filter is stopped in winter, thereby avoiding the problem of filter damage due to icing.

[0053] The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above technical means, and also include technical schemes composed of any combination of the above technical features. The above is the specific implementation of the utility model, and it should be pointed out that, for ordinary technical personnel in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements are also regarded as the protection scope of the utility model.

[0054] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0055] In addition, the descriptions such as "first", "second", "one" and the like in the utility model are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0056] In the utility model, unless otherwise specifically defined and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary technical personnel in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0057] In addition, the technical solutions of each embodiment of the utility model can be combined with each other, but it must be based on the realization of ordinary technical personnel in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the utility model.

Claims

1. A bag filter, characterized in that, include: The filter body has a removable filter cover; A filter cartridge is disposed within the inner cavity of the filter body; A filter bag is placed inside the filter cylinder; A locking plate, which is detachably covered on the water inlet end face of the filter cartridge, presses the opening edge of the filter bag and then fixes the locking plate in place by fasteners.

2. A bag filter according to claim 1, characterized in that, The filter body has an inlet and an outlet on its side wall that are connected to its inner cavity.

3. A bag filter according to claim 2, characterized in that, Both the inlet and the outlet are inclined and their central axes are on the same oblique line.

4. A bag filter according to claim 2, characterized in that, The water inlet end face of the filter cartridge is located at a height lower than the water inlet and higher than the water outlet.

5. A bag filter according to claim 2, characterized in that, The inlet and outlet pipes are connected to the filter body using a chuck-type structure.

6. A bag filter according to claim 1, characterized in that, The bottom surface of the locking plate is provided with a locking pin, and the water inlet end face of the filter cylinder is provided with a locking groove. The locking pin and the locking groove cooperate to form a rotation locking structure. The locking plate can be locked and unlocked on the filter cylinder by rotating it.

7. A bag filter according to claim 1, characterized in that, The locking plate has through holes on its surface to form a hollow structure.

8. A bag filter according to claim 1, characterized in that, The filter body is also provided with a filter bottom cover, and the filter top cover, the filter bottom cover and the filter body are connected by a clamp-type connection structure.

9. A bag filter according to claim 8, characterized in that, The filter bottom cover is also provided with a drain outlet.

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