Bag filter

Abstract

The bag filter comprises a shell, a mesh basket, a connecting rod, a filter bag and a sealing cover, one end of the shell is open, a filter cavity communicated with the opening is formed in the shell, and an inlet and an outlet which are communicated with the filter cavity are formed in the side wall of the shell; a boss is arranged on the outer side wall of one end of the mesh basket, a first through hole is formed in the boss, the mesh basket is arranged in the filtering cavity, and the boss is in sealed connection with the inner side wall of the shell; the connecting rod is arranged in the first through hole; the filter bag is arranged in the mesh basket, and a hanging lug is arranged at one end of the filter bag and hung on the connecting rod. According to the utility model, the filter bag is hung by ingeniously utilizing the connecting rod for fixing the net basket to replace the traditional structure that the filter bag is fixed through a pressing plate and a cross rod, so that the filter bag can be disassembled only by taking down the filter bag from the connecting rod, the operation is simple, the cross rod and the pressing plate do not need to be repeatedly disassembled and assembled, time and labor are saved, and convenience and practicability are realized; and a worker can conveniently clean and replace the filter bag.

Description

Technical Field

[0001] The utility model relates to the technical field of separation engineering, in particular to a bag filter. Background Art

[0002] Bag filter is a device used for liquid separation. The filter bag is supported by a metal mesh basket inside. The liquid flows in from the inlet, is filtered by the filter bag and flows out from the outlet. Impurities are intercepted in the filter bag. During the above filtering process, as impurities gradually accumulate in the filter bag, the filtering speed will slow down and the liquid flow will also decrease, resulting in a significant reduction in the filtering effect of the filter bag. Therefore, the filter bag needs to be taken out regularly for cleaning or replacement.

[0003] The structure of a bag filter generally includes a shell with an opening at one end, a metal mesh basket, a filter bag, a pressure plate, a cross bar and a sealing head. The installation steps include: first, put the metal mesh basket into the shell, then put the filter bag into the metal mesh basket, then fix the filter bag with the pressure plate and the cross bar, and finally seal the opening of the shell with the sealing head. Therefore, when taking out the filter bag, you need to remove the cross bar and the pressure plate before taking out the filter bag. After cleaning and replacing the filter bag, put it into the metal mesh basket, and then fix the filter bag with the pressure plate and the cross bar. Since the disassembly and assembly process of the filter bag involves the disassembly and assembly of the cross bar and the pressure plate, the operation is cumbersome, time-consuming, labor-intensive, and inconvenient to use.

[0004] Therefore, there is an urgent need to provide a bag filter that can solve the existing problems. Utility Model Content

[0005] To this end, the technical problem to be solved by the utility model is to overcome the problems existing in the prior art and propose a bag filter, which cleverly uses a connecting rod for fixing the net basket to hang the filter bag, so as to replace the traditional structure of fixing the filter bag by a pressure plate and a cross bar. Therefore, when disassembling the filter bag, it is only necessary to remove the filter bag from the connecting rod. The operation is simple and there is no need to repeatedly disassemble and assemble the cross bar and the pressure plate, which saves time and effort and is convenient and practical.

[0006] In order to solve the above technical problems, the utility model provides a bag filter, comprising:

[0007] A shell having an opening at one end, a filter cavity communicating with the opening being formed inside the shell, and an inlet and an outlet communicating with the filter cavity being arranged on a side wall of the shell;

[0008] A mesh basket, the outer side wall of one end of which has a boss, the boss is provided with a first through hole, the mesh basket is arranged in the filter cavity, and the boss is sealed and connected to the inner side wall of the shell;

[0009] A connecting rod, which is disposed in the first through hole;

[0010] A filter bag is arranged in the net basket, one end of the filter bag is provided with a hanging ear, and the hanging ear is hung on the connecting rod.

[0011] In one embodiment of the utility model, a sealing ring is further included. When the net basket is arranged in the filter cavity, the sealing ring is arranged between the net basket and the inner side wall of the shell.

[0012] In one embodiment of the utility model, a circle of protrusions is provided on the inner side wall of the shell. When the basket is arranged in the filter chamber, the boss of the basket is placed on the protrusion of the shell, and the boss and the protrusion are fixed by the connecting rod.

[0013] In one embodiment of the utility model, a second through hole is provided on the protrusion, and when the basket is arranged in the filter cavity, the first through hole and the second through hole are aligned, and the connecting rod is arranged in the first through hole and the second through hole.

[0014] In an embodiment of the present invention, a groove is provided at one end of the connecting rod, and the hanging ear of the filter bag is hung on the groove.

[0015] In an embodiment of the utility model, a rod sleeve is provided at one end of the connecting rod, a groove is provided on the rod sleeve, and the hanging ear of the filter bag is hung on the groove.

[0016] In an embodiment of the present invention, the number of the hanging ears is at least two, and the hanging ears are evenly arranged on the filter bag.

[0017] In an embodiment of the present invention, the hanging ears are sewn on the filter bag.

[0018] In an embodiment of the present invention, the connecting rod and the first through hole, and the connecting rod and the second through hole are threadedly connected.

[0019] In one embodiment of the present invention, a sealing cover is further included, and the sealing cover is arranged at the open end of the shell.

[0020] The utility model has the following beneficial effects:

[0021] The utility model ingeniously utilizes the connecting rod for fixing the net basket to hang the filter bag, so as to replace the traditional structure of fixing the filter bag by the pressing plate and the cross bar. Therefore, when disassembling the filter bag, it is only necessary to remove the filter bag from the connecting rod. The operation is simple, and there is no need to repeatedly disassemble and assemble the cross bar and the pressing plate. This saves time and effort, is convenient and practical, and allows the staff to easily clean and replace the filter bag, thereby improving the cleaning efficiency of the staff for the filter bag and ensuring the filtering effect of the filter bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the bag filter of the utility model.

[0023] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A above.

[0024] The reference numerals are as follows: 10, housing; 101, filter chamber; 102, inlet; 103, outlet; 104, protrusion; 105, second through hole; 11, basket; 111, boss; 112, first through hole; 12, connecting rod; 121, rod sleeve; 122, groove; 13, filter bag; 131, hanging ear; 14, sealing ring; 15, sealing cover. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" refers to two or more, unless otherwise clearly and specifically defined.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] See also Figure 1 and Figure 2 As shown, the utility model provides a bag filter, including a shell 10, a mesh basket 11, a connecting rod 12, a filter bag 13 and a sealing cover 15. One end of the shell 10 is open, and a filter cavity 101 connected to the opening is formed inside the shell 10. An inlet 102 and an outlet 103 connected to the filter cavity 101 are arranged on the side wall of the shell 10; the outer wall of one end of the mesh basket 11 has a boss 111, and the boss 111 is provided with a first through hole 112. The mesh basket 11 is arranged in the filter cavity 101, and the boss 111 is sealed and connected to the inner wall of the shell 10; the connecting rod 12 is arranged in the first through hole 112; the filter bag 13 is arranged in the mesh basket 11, and one end of the filter bag 13 is provided with a hanging ear 131, and the hanging ear 131 is hung on the connecting rod 12.

[0030] The utility model cleverly utilizes the connecting rod 12 for fixing the net basket 11 to hang the filter bag 13, so as to replace the traditional structure of fixing the filter bag 13 by the pressing plate and the cross bar. Therefore, when removing the filter bag 13, it is only necessary to remove the filter bag 13 from the connecting rod 12. The operation is simple and there is no need to repeatedly disassemble and assemble the cross bar and the pressing plate, which saves time and effort and is convenient and practical.

[0031] In this embodiment, a circle of protrusions 104 is provided on the inner wall of the shell 10. When the net basket 11 is set in the filter chamber 101, the net basket 11 is limited by the protrusions 104 of the shell 10, that is, the boss 111 of the net basket 11 is placed on the protrusion 104 of the shell 10, so that the net basket 11 is initially positioned in the filter chamber 101, and then the net basket 11 is fixed to the shell 10 by the connecting rod 12, that is, the boss 111 of the net basket 11 and the protrusion 104 of the shell 10 are fixed by the connecting rod 12.

[0032] Furthermore, the protrusion 104 is provided with a second through hole 105. When the net basket 11 is arranged in the filter chamber 101, the first through hole 112 and the second through hole 105 are aligned, and the connecting rod 12 is arranged in the first through hole 112 and the second through hole 105. As an example, the connecting rod 12 and the first through hole 112 and the connecting rod 12 and the second through hole 105 are threadedly connected, that is, the connecting rod 12 is provided with an external thread, and the first through hole 112 and the second through hole 105 are provided with an internal thread used in conjunction with the external thread. When the net basket 11 is arranged in the filter chamber 101, the first through hole 112 and the second through hole 105 are aligned, and then the connecting rod 12 passes through the first through hole 112 and the second through hole 105 in sequence and is tightened.

[0033] In this embodiment, the fluid medium first enters the filter chamber 101 from the inlet 102 of the housing 10, and flows out through the basket 11 and the filter bag 13 in sequence, and then is discharged through the outlet 103 of the housing 10. It can be seen that the outer wall of the basket 11 and the inner wall of the housing 10 need to be sealed. Therefore, the bag filter of this embodiment also includes a sealing ring 14, which is arranged on the outer wall of the basket 11. When the basket 11 is arranged in the filter chamber 101, the sealing ring 14 is arranged between the basket 11 and the inner wall of the housing 10, thereby ensuring the sealing between the basket 11 and the housing 10.

[0034] In this embodiment, a groove 122 is provided at one end of the connecting rod 12, and a hanging ear 131 of the filter bag 13 is hung on the groove 122; or a rod sleeve 121 is provided at one end of the connecting rod 12, and a groove 122 is provided on the rod sleeve 121, and the hanging ear 131 of the filter bag 13 is hung on the groove 122, that is, the filter bag 13 is fixed on the groove 122 by the hanging ear 131, and the operation is simple.

[0035] Further, the number of the hanging ears 131 is at least two, and at least two hanging ears 131 are evenly arranged on the filter bag 13. Preferably, the number of the hanging ears 131 is four, and the four hanging ears 131 are evenly sewn on the filter bag 13, that is, the four hanging ears 131 are used as four opening points of the filter bag 13, and the flatness of the filter bag 13 can be ensured while limiting the filter bag 13, so as to avoid affecting the filtering effect due to the wrinkles of the filter bag 13.

[0036] In this embodiment, the bag filter further comprises a sealing cover 15, which is detachably mounted on the open end of the housing 10. The mounting structure of the sealing cover 15 may refer to the prior art structure, and this embodiment will not be described in detail here.

[0037] In this embodiment, when the filter bag 13 needs to be cleaned or replaced, the sealing cover 15 is first opened, and then the filter bag 13 is removed from the groove 122 of the connecting rod 12. The operation is simple, so that the staff can easily clean and replace the filter bag 13, thereby improving the cleaning efficiency of the filter bag 13 and ensuring the filtering effect of the filter bag 13.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bag filter, characterized in that: include: A shell having an opening at one end, a filter cavity communicating with the opening being formed inside the shell, and an inlet and an outlet communicating with the filter cavity being arranged on a side wall of the shell; A mesh basket, the outer side wall of one end of which has a boss, the boss is provided with a first through hole, the mesh basket is arranged in the filter cavity, and the boss is sealed and connected to the inner side wall of the shell; A connecting rod, which is disposed in the first through hole; A filter bag is arranged in the net basket, one end of the filter bag is provided with a hanging ear, and the hanging ear is hung on the connecting rod.

2. A bag filter according to claim 1, characterized in that: It also includes a sealing ring, which is arranged between the net basket and the inner side wall of the shell when the net basket is arranged in the filter cavity.

3. A bag filter according to claim 1 or 2, characterized in that: The inner side wall of the shell is provided with a circle of protrusions. When the net basket is arranged in the filter cavity, the boss of the net basket is placed on the protrusion of the shell, and the boss and the protrusion are fixed by the connecting rod.

4. A bag filter according to claim 3, characterized in that: The protrusion is provided with a second through hole. When the net basket is arranged in the filter cavity, the first through hole is aligned with the second through hole, and the connecting rod is arranged in the first through hole and the second through hole.

5. A bag filter according to claim 3, characterized in that: One end of the connecting rod is provided with a groove, and the hanging ear of the filter bag is hung on the groove.

6. A bag filter according to claim 3, characterized in that: A rod sleeve is arranged at one end of the connecting rod, a groove is arranged on the rod sleeve, and a hanging ear of the filter bag is hung on the groove.

7. A bag filter according to claim 3, characterized in that: The number of the hanging ears is at least two, and the hanging ears are evenly arranged on the filter bag.

8. A bag filter according to claim 7, characterized in that: The hanging ears are sewn on the filter bag.

9. A bag filter according to claim 4, characterized in that: The connecting rod and the first through hole are threadedly connected, and the connecting rod and the second through hole are threadedly connected.

10. A bag filter according to claim 3, characterized in that: A sealing cover is also included, and the sealing cover is arranged at the open end of the shell.

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