Filter fan and pressure filter

Abstract

The utility model relates to the technical field of filter fan production and processing, and specifically to a filter fan and a pressure filter. The utility model provides a filter fan, including a fan body, one end of the fan body is connected to an end plate, and the other end is connected to a connecting pipe, and the fan body includes two symmetrically connected fan plates, and a cavity is formed between the two fan plates. In the utility model, since the two fan plates are both U-shaped parts formed by integral bending, when welding the fan body, it is only necessary to weld the two ends of one of the U-shaped parts with the two ends of the other U-shaped part, and the original welding of four areas is changed to welding of two areas, which improves production efficiency. In addition, since the length of the threaded section of the connecting column is less than the length of the connecting column, the threaded section is located at the end away from the connecting pipe, and the filtrate in the cavity is blocked by the end of the connecting column, and the filtrate in the cavity cannot flow into the pressure filter along the gap between the external thread of the bolt and the threaded section.

Description

Technical Field

[0001] The utility model relates to the technical field of filter fan production and processing, in particular to a filter fan and a pressure filter. Background Art

[0002] The filter fan is the core component of the pressurized filter to achieve solid-liquid separation, and the pressure plate plays the role of fixing and pressing the filter fan.

[0003] At present, the common filter fan includes a fan body, a connecting pipe is welded at one end of the fan body, an end plate is welded at the other end, a full-thread nut is welded on the end plate, a through hole is opened on the pressure plate of the pressure filter, bolts pass through the through hole and are screwed into the full-thread nut, thereby fixing the filter fan on the pressure plate, the fan body includes two parallel fan plates and two parallel side plates, two side plates are arranged between the two parallel fan plates, each side plate is welded to the fan plate, and a cavity for passing the filtrate is formed between the two fan plates and the two side plates.

[0004] However, this type of filter fan uses a full-thread nut. The liquid in the filter fan cavity will flow out from the thread gap between the full-thread nut and the bolt and enter the pressure filter, which may easily cause the pressure filter to malfunction. In addition, during the production of the fan body, both sides of each side plate must be welded to the corresponding fan plate to form a fan body, which requires welding in four areas. There are many welding steps and low production efficiency. Utility Model Content

[0005] (I) The problem to be solved by the utility model is: how to improve production efficiency and prevent filtrate from flowing out from the thread gaps between full-thread nuts and bolts to avoid causing malfunctions of the pressure filter.

[0006] (II) Technical solution

[0007] The utility model provides a filter fan, comprising a fan body, one end of the fan body is connected to an end plate, and the other end is connected to a pipe, the fan body comprises two symmetrically connected fan plates, a cavity is formed between the two fan plates, and a plurality of filter holes connected to the cavity are formed on the two fan plates;

[0008] The two fan plates are both integrally bent U-shaped pieces;

[0009] The end plate is symmetrically provided with mounting holes, a connecting column is connected in the mounting hole, and a threaded section for connecting with a bolt is provided at one end of the connecting column away from the connecting pipe, and the length of the threaded section is smaller than the length of the connecting column.

[0010] According to an embodiment of the utility model, each of the fan plates comprises a top plate and side plates respectively located on both sides of the top plate, and a plurality of filter holes for filtering are formed on the top plate.

[0011] According to one embodiment of the utility model, the connecting column includes a connected mounting tube and a cylinder, the outer diameter of the mounting tube is smaller than the diameter of the mounting hole, the diameter of the cylinder is larger than the diameter of the mounting hole, and the threaded section is provided on the inner wall of the mounting tube.

[0012] According to an embodiment of the utility model, a rubber ring is arranged inside one end of the mounting tube close to the cylinder.

[0013] According to an embodiment of the present utility model, the end plate comprises a first plate body and a second plate body connected to each other, and the size of the first plate body is larger than the size of the second plate body;

[0014] The second plate body is located between the two fan plates, and the two fan plates are welded to a surface of the first plate body facing the fan plates.

[0015] According to an embodiment of the present invention, the length of the mounting tube is equal to the thickness of the end plate.

[0016] According to an embodiment of the present invention, the cross-sectional area of ​​one end of the sector body close to the end plate is larger than the cross-sectional area of ​​the other end thereof.

[0017] According to an embodiment of the utility model, at least one rib plate is connected between the two fan plates.

[0018] According to an embodiment of the utility model, a plurality of rib plates are provided, and the plurality of rib plates are arranged along the width direction of the fan body.

[0019] A pressure filter comprises any one of the filter fans described above.

[0020] Beneficial effects of the utility model:

[0021] Since the two fan plates are both U-shaped parts formed by integral bending, when welding the fan body, it is only necessary to weld the two ends of one of the U-shaped parts to the two ends of the other U-shaped part. Compared with the traditional fan body production, the original four welding areas are changed to two welding areas, the welding steps are reduced, and the production efficiency is improved. In addition, since the length of the threaded section of the connecting column is smaller than the length of the connecting column, the threaded section is located at the end away from the connecting pipe, and the filtrate in the cavity is blocked by the end of the connecting column, and the filtrate in the cavity cannot flow into the pressure filter along the gap between the external thread of the bolt and the threaded section, and the pressure filter will not malfunction due to leakage in the thread gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A front view of a filter fan provided by an embodiment of the utility model;

[0024] Figure 2 A cross-sectional view of a fan plate, an end plate and a connecting column provided in an embodiment of the utility model;

[0025] Figure 3 The embodiment of the utility model provides Figure 2 A magnified view of part A;

[0026] Figure 4 A three-dimensional diagram of an end plate provided in an embodiment of the utility model;

[0027] Figure 5 A three-dimensional diagram of the end plate and fan body provided in an embodiment of the utility model.

[0028] Icons: 1. Fan plate; 101. Top plate; 102. Side plate; 2. End plate; 201. Mounting hole; 202. First plate body; 203. Second plate body; 3. Connecting column; 301. Mounting pipe; 302. Cylinder; 4. Connecting pipe; 5. Rib plate; 6. Rubber ring. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0030] Embodiment 1:

[0031] like Figure 1-Figure 5 As shown, an embodiment of the utility model provides a filter fan, including a fan body, one end of the fan body is connected to an end plate 2, and the other end thereof is connected to a pipe 4, the fan body includes two symmetrically connected fan plates 1, a cavity is formed between the two fan plates 1, and a plurality of filter holes connected to the cavity are opened on the two fan plates 1;

[0032] The two fan plates 1 are both integrally bent and formed U-shaped parts;

[0033] The end plate 2 is symmetrically provided with mounting holes 201 , and a connecting column 3 is connected in the mounting hole 201 . The connecting column 3 has a threaded section for connecting with a bolt at one end away from the connecting pipe 4 , and the length of the threaded section is less than that of the connecting column 3 .

[0034] Since the two fan plates 1 are both U-shaped parts formed by integral bending, when welding the fan body, it is only necessary to weld the two ends of one of the U-shaped parts to the two ends of the other U-shaped part. Compared with the traditional fan body production, the original four welding areas are changed to two welding areas, the welding steps are reduced, and the production efficiency is improved. In addition, since the length of the threaded section of the connecting column 3 is smaller than the length of the connecting column 3, the threaded section is located at the end away from the connecting pipe 4, and the filtrate in the cavity is blocked by the end of the connecting column 3, and the filtrate in the cavity cannot flow into the pressure filter along the gap between the external thread of the bolt and the threaded section, and the pressure filter will not malfunction due to leakage in the thread gap.

[0035] According to an embodiment of the present invention, each fan plate 1 comprises a top plate 101 and side plates 102 respectively located on both sides of the top plate 101 , and a plurality of filter holes for filtering are formed on the top plate 101 .

[0036] There is an arc-shaped filtering section between the side plate 102 and the top plate 101, such as Figure 2 and Figure 5 As shown, the side plate 102 has a welding surface on the side away from the arc-shaped transition section. When the side plate 102 and the top plate 101 are perpendicular, the two welding surfaces of one fan plate 1 are parallel to the two welding surfaces of the other fan plate 1. Therefore, when the two fan plates 1 are welded, the welding surfaces can fit together, the welding effect is better, and the stability of the filter fan is higher.

[0037] According to an embodiment of the present invention, the mounting hole 201 is a round hole, which is easy to process.

[0038] According to one embodiment of the utility model, the connecting column 3 includes a connected mounting tube 301 and a cylinder 302, the outer diameter of the mounting tube 301 is smaller than the diameter of the mounting hole 201, the diameter of the cylinder 302 is larger than the diameter of the mounting hole 201, and the inner wall of the mounting tube 301 is provided with a threaded section.

[0039] Since the outer diameter of the mounting tube 301 is smaller than the diameter of the mounting hole 201, and the diameter of the cylinder 302 is larger than the diameter of the mounting hole 201, it can be known that the outer diameter of the mounting tube 301 is smaller than the diameter of the cylinder 302. After the mounting tube 301 in the connecting column 3 is placed in the mounting hole 201, the connection between the cylinder 302 and the mounting tube 301 is abutted against the side wall of the end plate 2, that is, the end face of the cylinder 302 close to the mounting tube 301 abuts against the side of the second plate body 203 away from the first plate body 202, and the mounting tube 301 will not move along the direction from the cylinder 302 to the mounting tube 301, thereby making it more convenient and quick to weld the cylinder 302 and the end plate 2.

[0040] The end of the cylinder 302 close to the end plate 2 is welded to the end plate 2. Furthermore, a clearance area is provided at the end of the mounting hole 201 away from the pipe 4. The depth of the clearance area is less than the length of the mounting hole 201. The depth direction of the clearance area is equal to the length direction of the mounting hole 201. The mounting pipe 301 is also welded to the end plate 2. The welding point is located in the clearance area, which can prevent the welding point from protruding from the surface of the end plate 2 and improve the strength and stability of the connection column 3 welded to the end plate 2. The connection column 3 and the end plate 2 are seamlessly welded and will not leak.

[0041] Preferably, the cylinder 302 and the mounting tube 301 are integrally formed.

[0042] Correspondingly, the outer shape of the mounting tube 301 in the connecting column 3 is the same as the shape of the mounting hole 201. When the mounting hole 201 is a round hole, the outer shape of the mounting tube 301 is round. Specifically, the mounting hole 201 can also be a square hole or a hexagonal hole. The outer shape of the mounting tube 301 is square or hexagonal. A threaded section is provided inside the mounting tube 301. Since the square hole is flat welded, the welding difficulty is small. Its purpose does not deviate from the design concept of the utility model, and therefore, it should belong to the protection scope of the utility model.

[0043] Of course, in this embodiment, the diameter of the cylinder 302 can also be the same as the outer diameter of the mounting tube 301 .

[0044] According to an embodiment of the present invention, a rubber ring 6 is disposed inside one end of the mounting tube 301 close to the cylinder 302 .

[0045] By installing the rubber ring 6, when the bolt is screwed into the installation tube 301, the rubber ring 6 is squeezed, which plays a protective role on the bolt and prevents the bolt tail from being damaged due to filtering.

[0046] According to an embodiment of the present utility model, the end plate 2 includes a first plate body 202 and a second plate body 203 connected to each other, and the size of the first plate body 202 is larger than the size of the second plate body 203;

[0047] The second plate body 203 is located between the two fan plates 1 , and the first plate body 202 is welded to the two fan plates 1 on one side facing the fan plates 1 .

[0048] The first plate body 202 is provided with two first holes, and the second plate body 203 is provided with two second holes. The first holes correspond to the second holes one by one, and the first holes are connected with the corresponding second holes to form the mounting holes 201 .

[0049] It should be noted that, by setting the two opposite side faces of the second plate body 203 to contact the mutually close sides of the two top plates 101 respectively, the second plate body 203 plays a role in pre-positioning and supporting the two fan plates 1, so that the positions of the two fan plates 1 welded on the end plate 2 are more accurate, thereby improving the product quality of the filter fan.

[0050] According to one embodiment of the utility model, the length of the mounting tube 301 is equal to the thickness of the end plate 2, so that the end surface of the mounting tube 301 away from the cylinder 302 is flush with the outer side surface of the first plate body 202. Therefore, when the filter fan and the pressure plate in the pressure filter are connected by bolts, the end plate 2 is in contact with the pressure plate, avoiding stress concentration caused by the mounting tube 301 protruding from the end plate 2, thereby improving the reliability and stability of the equipment and extending the service life of the equipment.

[0051] The thickness direction of the end plate 2 is the same as the axial direction of the mounting hole 201 .

[0052] Of course, in this embodiment, the length of the mounting tube 301 can also be less than the thickness of the end plate 2. The purpose does not deviate from the design concept of the utility model, and therefore, should belong to the protection scope of the utility model.

[0053] According to an embodiment of the present invention, the cross-sectional area of ​​one end of the sector body close to the end plate 2 is larger than the cross-sectional area of ​​the other end thereof.

[0054] According to an embodiment of the present invention, at least one rib plate 5 is connected between two fan plates 1 .

[0055] A plurality of rib plates 5 are provided, and the plurality of rib plates 5 are arranged along the width direction of the fan body.

[0056] Preferably, in this embodiment, the rib plates 5 are respectively recorded as the first rib plate and the second rib plate, five first rib plates are arranged at intervals, four second rib plates are arranged at intervals, the first rib plates and the second rib plates are arranged alternately, the length of the first rib plate is greater than the length of the second rib plate, one end of the first rib plate and the second rib plate are fixed to the end plate 2, the rib plate 5 can strengthen the strength of the filter fan and reduce the probability of deformation of the fan plate 1 in the filter fan, the distance between each two adjacent first rib plates close to one end of the end plate 2 is greater than the distance at the other end, so as to better divert the filtrate and guide the filtrate to discharge from the cavity.

[0057] It should be noted that when welding the rib plate 5 , the filter holes opened on the top plate 101 should be avoided as much as possible so as not to affect the filtering efficiency of the fan plate 1 .

[0058] Embodiment 2:

[0059] A pressure filter comprises a filter fan.

[0060] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0061] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter fan, characterized in that: It comprises a fan body, one end of the fan body is connected to an end plate (2), and the other end of the fan body is connected to a pipe (4), the fan body comprises two symmetrically connected fan plates (1), a cavity is formed between the two fan plates (1), and the two fan plates (1) are each provided with a plurality of filter holes connected to the cavity; The two fan plates (1) are both integrally bent U-shaped parts; The end plate (2) is symmetrically provided with mounting holes (201), a connecting column (3) is connected to the mounting hole (201), and a threaded section for connection with a bolt is provided at one end of the connecting column (3) away from the connecting pipe (4), and the length of the threaded section is less than the length of the connecting column (3).

2. A filter fan according to claim 1, characterized in that: Each of the fan plates (1) comprises a top plate (101) and side plates (102) respectively located on both sides of the top plate (101); a plurality of filter holes for filtering are provided on the top plate (101).

3. A filter fan according to claim 1, characterized in that: The connecting column (3) comprises a mounting tube (301) and a cylinder (302) connected to each other, the outer diameter of the mounting tube (301) being smaller than the diameter of the mounting hole (201), the diameter of the cylinder (302) being larger than the diameter of the mounting hole (201), and the threaded section being provided on the inner wall of the mounting tube (301).

4. A filter fan according to claim 3, characterized in that: A rubber ring (6) is disposed inside one end of the mounting tube (301) close to the cylinder (302).

5. A filter fan according to claim 2, characterized in that: The end plate (2) comprises a first plate body (202) and a second plate body (203) connected to each other, and the size of the first plate body (202) is larger than the size of the second plate body (203); The second plate body (203) is located between the two fan plates (1), and the two fan plates (1) are welded to a surface of the first plate body (202) facing the fan plates (1).

6. A filter fan according to claim 3, characterized in that: The length of the mounting tube (301) is equal to the thickness of the end plate (2).

7. A filter fan according to claim 1, characterized in that: The cross-sectional area of ​​one end of the sector body close to the end plate (2) is larger than the cross-sectional area of ​​the other end thereof.

8. A filter fan according to claim 1, characterized in that: At least one rib plate (5) is connected between the two fan plates (1).

9. A filter fan according to claim 8, characterized in that: A plurality of rib plates (5) are provided, and the plurality of rib plates (5) are arranged in an array along the width direction of the fan body.

10. A pressure filter, characterized in that: A filter fan comprising any one of claims 1-9.

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