Emptying flange plate structure and filter

Abstract

The emptying flange plate structure comprises a plate body, a radial communicating hole and an axial communicating hole are formed in the top or the bottom of the plate body, one end of the radial communicating hole is arranged in the radial direction of the plate body in an outward penetrating mode, and one end of the axial communicating hole extends in the axial direction of the plate body and is communicated with the other end of the radial communicating hole. The other end of the axial communication hole penetrates through the inner side of the disc body in the axial direction of the disc body, a long welding neck flange is arranged at the position, at the radial communication hole, of the circumferential side face of the disc body, an outer communication hole communicated with the radial communication hole is formed in the long welding neck flange, and a flange cover covering the outer communication hole is arranged on the long welding neck flange. The radial communicating holes and the axial communicating holes are formed in the side face of the disc body, the emptying and emptying effects on the inner side of the disc body are achieved, meanwhile, the long welding neck flange is installed on the circumferential side face of the disc body, the connecting position of the front face of the disc body is not occupied, and the position of a filtering cavity in the back face of the disc body is not occupied.

Description

Technical Field

[0001] The utility model relates to a flange structure, in particular to a vent flange structure and a filter. Background Art

[0002] A filter is an indispensable device on a pipeline for conveying a medium, and is usually installed at the inlet end of a pressure reducing valve, a pressure relief valve, a constant water level valve and other devices. The filter body is usually composed of a cylinder body, a stainless steel filter screen, a sewage discharge part, a transmission device and an electric control part. After the liquid to be treated passes through the filter cartridge of the filter screen, its impurities are blocked. When cleaning is required, the detachable filter cartridge is taken out, and after treatment, it is reinstalled, which has the advantage of extremely convenient maintenance.

[0003] In the prior art, the filter is arranged between pipelines, and both ends of the filter are connected to the pipelines through flange surfaces. However, when replacing the filter cartridge inside the filter, it is necessary to vent the inside of the filter. The filter in the prior art realizes venting by arranging a vent on the cylinder body. However, after a heat preservation layer or a heating layer is arranged on the surface of the filter cylinder body, the structure of the vent needs to penetrate through a double-layer shell structure, and the sealing process is relatively inconvenient. Therefore, a flange structure with a simpler structure and suitable for venting the filter is needed. Summary of the Utility Model

[0004] The first object of the utility model is to provide a vent flange structure, which has the function of venting and does not occupy the side wall of the cylinder body.

[0005] The above technical object of the utility model is achieved by the following technical solutions: a vent flange structure, including a disc body, a through hole is axially penetrated through the center of the disc body, threaded holes are arranged on the disc body, and the threaded holes are evenly distributed along the circumferential direction of the disc body. A radial communication hole and an axial communication hole are arranged at the top or bottom of the disc body. One end of the radial communication hole penetrates through the disc body radially outward, one end of the axial communication hole extends axially along the disc body and communicates with the other end of the radial communication hole, and the other end of the axial communication hole penetrates through the inner side of the disc body axially. The radial communication hole and the axial communication hole are arranged between adjacent threaded holes. A long high neck flange is arranged on the circumferential side surface of the disc body at the position of the radial communication hole. An outer communication hole communicating with the radial communication hole is arranged inside the long high neck flange, and a flange cover covering the outer communication hole is arranged on the long high neck flange.

[0006] Preferably, an installation groove is concentrically arranged at the outer end of the radial communication hole of the disc body. The cross-sectional shape of the installation groove is annular, and the installation groove is formed by radially inwardly recessing from the outer circumferential surface of the disc body. The long high neck flange includes a communication pipe arranged at the bottom, the outer communication hole is arranged inside the communication pipe, and the installation groove cooperates with the bottom of the communication pipe.

[0007] By adopting the above technical solution, the installation groove facilitates the positioning and installation of the connecting pipe, so that the long neck flange is arranged on the circumferential side surface of the disc body.

[0008] Preferably, the diameter of the outer communication hole is larger than that of the radial communication hole, and a welding area is formed between the outer side surface of the connecting pipe and the outer side surface of the installation groove.

[0009] By adopting the above technical solution, the diameter of the outer communication hole is larger than that of the radial communication hole, improving the effect of air release and evacuation.

[0010] Preferably, a connection structure is arranged between the flange cover and the long neck flange. The connection structure includes an upper through hole, a lower through hole, a gasket, a stud and a nut. The upper through holes are evenly distributed around the circumference of the flange cover, the lower through holes are evenly distributed around the circumference of the long neck flange, the upper through holes and the lower through holes correspond to each other one by one, the stud penetrates through the upper through hole and the lower through hole, and at least two nuts are sequentially connected above the upper through hole of the stud with the gasket, and at least two nuts are sequentially connected below the lower through hole of the stud with the gasket.

[0011] By adopting the above technical solution, it plays a role in locking the long neck flange and avoids leakage of the outer communication hole.

[0012] Preferably, the outer communication hole and the radial communication hole are coaxially arranged.

[0013] Preferably, a convex block is arranged at the center of the bottom of the flange cover, a convex ring matched with the convex block is arranged at the top of the long neck flange, and a sealing gasket is arranged between the convex block and the convex ring.

[0014] By adopting the above technical solution, the convex block and the convex ring cooperate with each other. Under the pressing action of the stud, the sealing gasket plays a role in sealing the outer communication hole.

[0015] Preferably, the length of the connecting pipe is greater than the length of the stud at the bottom of the lower through hole, and a gap is formed between the bottom of the connecting pipe and the bottom of the installation groove.

[0016] By adopting the above technical solution, and due to the arrangement of the upper welding area at the same time, a gap can be left at the bottom, which is convenient for processing and installation.

[0017] Preferably, the threaded hole is a blind hole, and eight threaded holes are arranged on the disc body.

[0018] By adopting the above technical solution, the threaded hole does not penetrate through the disc body, that is, the connection of the disc body is not carried out through a nut.

[0019] The second object of the present utility model is to provide a filter, which has the advantage of avoiding the air release structure arranged on the side surface of the cylinder body.

[0020] The above technical object of the utility model is achieved by the following technical solution: A filter applying a vent flange structure, two of the discs are arranged in the horizontal direction, a cylinder is arranged between adjacent discs, two ends of the cylinder in the length direction are respectively communicated with the inner sides of adjacent discs, a filter cavity is arranged in the cylinder, the axial communication holes in each disc are communicated with the filter cavity, and the long neck flanges on the disc are rotationally symmetrically arranged with the cylinder as the center.

[0021] To sum up, by arranging radial communication holes and axial communication holes on the side surface of the disc, it plays a role of venting and emptying the inner side of the disc. At the same time, the long neck flanges are installed on the circumferential side surface of the disc, which neither occupies the connection position on the front of the disc nor the position of the filter cavity on the back of the disc. The outer communication holes can be opened and closed through the flange cover, and the fluid inside the filter sequentially passes through the axial communication holes, radial communication holes and outer communication holes and is discharged, having the function of venting without occupying the side wall of the cylinder; at the same time, the rotationally symmetrically arranged long neck flanges, that is, the upward long neck flanges have the function of venting, and the downward long neck flanges have the function of emptying. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic cross-sectional view of Embodiment 1;

[0023] Figure 2 is Figure 1 the enlarged schematic view of part A shown;

[0024] Figure 3 is a side view of Embodiment 1;

[0025] Figure 4 is a schematic cross-sectional view of Embodiment 2;

[0026] In the figure, 1, disc; 11, through hole; 12, threaded hole; 13, installation groove; 14, cylinder; 21, radial communication hole; 22, axial communication hole; 3, long neck flange; 31, outer communication hole; 32, connecting pipe; 33, welding area; 34, convex ring; 35, sealing gasket; 4, flange cover; 41, upper through hole; 42, lower through hole; 43, gasket; 44, stud; 45, nut; 46, convex block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following further describes the present utility model in detail with reference to the drawings.

[0028] This specific embodiment is only an interpretation of the present utility model and does not limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

[0029] Embodiment 1:

[0030] As Figures 1 to 3 shown, a vent flange structure includes a circular disk body 1. A through hole 11 is axially penetrated through the center of the disk body 1. The through hole 11 serves to allow fluid to enter and flow out of the filter chamber (depending on whether the disk body 1 is in the liquid inlet position or the liquid outlet position of the filter). Threaded holes 12 are provided on the disk body 1. The threaded holes 12 are blind holes, that is, the threaded holes 12 are not provided through both sides of the disk body 1. The threaded holes 12 are evenly distributed along the circumferential direction of the disk body 1. As Figure 3 shown, there are eight threaded holes 12 provided on the disk body 1, and the external pipeline locks the flange on the disk body 1 through bolts.

[0031] On the top or bottom of the disk body 1 (as Figure 1 shown, here the top of the disk body 1 refers to the top or bottom of the disk body 1 in the vertical state, which serves to vent or empty), a radial communication hole 21 and an axial communication hole 22 are provided. Both the radial communication hole 21 and the axial communication hole 22 are provided inside the disk body 1. One end of the radial communication hole 21 penetrates outward along the radial direction of the disk body 1. One end of the axial communication hole 22 extends along the axial direction of the disk body 1 and communicates with the other end of the radial communication hole 21. The other end of the axial communication hole 22 penetrates through the inner side of the disk body 1 along the axial direction of the disk body 1. As Figure 3 shown, the radial communication hole 21 and the axial communication hole 22 are provided between adjacent threaded holes 12. A long neck flange 3 is provided on the circumferential side surface of the disk body 1 at the position of the radial communication hole 21. An external communication hole 31 communicating with the radial communication hole 21 is provided inside the long neck flange 3. A flange cover 4 covering the external communication hole 31 is provided on the long neck flange 3.

[0032] As Figure 1 and Figure 2As shown, an installation groove 13 is concentrically arranged at the outer end of the radial communication hole 21 of the disk body 1. The cross-sectional shape of the installation groove 13 is annular. The installation groove 13 is formed by the outer circumferential surface of the disk body 1 recessing radially inwards. The long neck flange 3 includes a communication pipe 32 arranged at the bottom of the long neck flange 3, that is, the communication pipe 32 is a part of the long neck flange 3. The diameter of the outer communication hole 31 is larger than the diameter of the radial communication hole 21. The outer communication hole 31 is arranged inside the communication pipe 32. The installation groove 13 cooperates with the bottom of the communication pipe 32. The outer communication hole 31 and the radial communication hole 21 are coaxially arranged, that is, the installation groove 13 is for the bottom of the communication pipe 32 to be inserted. A welding area 33 is formed between the outer side surface of the communication pipe 32 and the outer side surface of the installation groove 13. A gap is formed between the bottom of the communication pipe 32 and the bottom of the installation groove 13. Then, the outer side surface of the communication pipe 32 and the outer side surface of the installation groove 13 are welded and fixed at the position of the welding area 33.

[0033] As Figures 1 to 3 shown, the flange cover 4 and the long neck flange 3 are disassembled through studs 44 and nuts 45. The connection structure at this position includes an upper through hole 41, a lower through hole 42, a gasket 43, studs 44 and nuts 45. The upper through holes 41 are evenly distributed around the circumference of the flange cover 4. The lower through holes 42 are evenly distributed around the circumference of the long neck flange 3. The upper through holes 41 and the lower through holes 42 correspond one by one. The studs 44 penetrate through the upper through holes 41 and the lower through holes 42. Gaskets 43 and at least two nuts 45 are sequentially connected above the upper through holes 41 of the studs 44. Gaskets 43 and at least two nuts 45 are sequentially connected below the lower through holes 42 of the studs 44. At the same time, in order to avoid the studs 44 colliding with the disk body 1, the length of the communication pipe 32 is greater than the length of the studs 44 at the bottom of the lower through holes 42.

[0034] The sealing structure between the two is that a convex block 46 is arranged at the center of the bottom of the flange cover 4, a convex ring 34 matched with the convex block is arranged at the top of the long neck flange 3, and a sealing gasket 35 is arranged between the convex block 46 and the convex ring 34. By rotating the nuts 45 on the studs 44, the convex block 46 of the flange cover 4 presses the sealing gasket 35 against the convex ring 34 of the long neck flange 3, improving the sealing effect at this position.

[0035] Embodiment 2:

[0036] As Figure 4 shown, a filter applying the structure of the venting flange disk has two disk bodies 1 arranged in the horizontal direction. A cylinder body 14 is arranged between adjacent disk bodies 1. The two ends in the length direction of the cylinder body 14 are respectively communicated with the inner sides of adjacent disk bodies 1. A filtering cavity is arranged inside the cylinder body 14. At the same time, the filtering structure inside the filter belongs to the prior art and will not be elaborated here. The axial communication holes 22 in each disk body 1 are all communicated with the filtering cavity. The long neck flanges 3 on the disk bodies 1 are rotationally symmetrically arranged with the cylinder body 14 as the center.

[0037] That is Figure 4 As shown, the long high-neck flange 3 on the left is in a vertically upward state, and the long high-neck flange 3 on the right is in a vertically downward state. During use, the long high-neck flange 3 on the left functions as an air vent, and the long high-neck flange 3 on the right functions as an emptying port.

Claims

1. A vent flange structure, comprising a disc body (1), a through hole (11) is axially penetrated through the center of the disc body (1), and threaded holes (12) are arranged on the disc body (1), and the threaded holes (12) are evenly distributed along the circumferential direction of the disc body (1), and it is characterized in that: A radial communication hole (21) and an axial communication hole (22) are provided at the top or bottom of the disk body (1). One end of the radial communication hole (21) penetrates outward along the radial direction of the disk body (1). One end of the axial communication hole (22) extends along the axial direction of the disk body (1) and communicates with the other end of the radial communication hole (21). The other end of the axial communication hole (22) penetrates through the inner side of the disk body (1) along the axial direction of the disk body (1). The radial communication hole (21) and the axial communication hole (22) are arranged between adjacent threaded holes (12). A long neck flange (3) is provided on the circumferential side of the disk body (1) at the position of the radial communication hole (21). An outer communication hole (31) communicating with the radial communication hole (21) is provided inside the long neck flange (3). A flange cover (4) covering the outer communication hole (31) is provided on the long neck flange (3).

2. The vent flange structure according to claim 1, characterized in that: An installation groove (13) is concentrically provided at the outer end of the radial communication hole (21) of the disk body (1). The cross-sectional shape of the installation groove (13) is annular. The installation groove (13) is formed by recessing inward along the radial direction from the outer circumferential surface of the disk body (1). The long neck flange (3) includes a communication pipe (32) provided at the bottom. The outer communication hole (31) is provided inside the communication pipe (32). The installation groove (13) cooperates with the bottom of the communication pipe (32).

3. The vent flange structure according to claim 2, characterized in that: The diameter of the outer communication hole (31) is larger than that of the radial communication hole (21). A welding area (33) is formed between the outer side surface of the communication pipe (32) and the outer side surface of the installation groove (13).

4. The vent flange structure according to claim 1, characterized in that: A connection structure is provided between the flange cover (4) and the long neck flange (3). The connection structure includes an upper through hole (41), a lower through hole (42), a gasket (43), a stud (44) and a nut (45). The upper through holes (41) are evenly distributed around the circumference of the flange cover (4). The lower through holes (42) are evenly distributed around the circumference of the long neck flange (3). The upper through holes (41) and the lower through holes (42) correspond to each other one by one. The stud (44) penetrates through the upper through hole (41) and the lower through hole (42). The stud (44) is sequentially connected with the gasket (43) and at least two nuts (45) above the upper through hole (41). The stud (44) is sequentially connected with the gasket (43) and at least two nuts (45) below the lower through hole (42).

5. The vent flange structure according to claim 2, characterized in that: The outer communication hole (31) is coaxially arranged with the radial communication hole (21).

6. The vent flange structure according to claim 2, wherein: A convex block (46) is provided at the center of the bottom of the flange cover (4). A convex ring (34) cooperating with the convex block (46) is provided at the top of the long neck flange (3). A sealing gasket ((35) is provided between the convex block (46) and the convex ring (34).

7. The vent flange structure according to claim 4, characterized in that: The length of the communication pipe (32) is greater than the length of the stud (44) at the bottom of the lower through hole (42). A gap is formed between the bottom of the communication pipe (32) and the bottom of the installation groove (13).

8. The vent flange structure according to claim 1, characterized in that: The threaded hole (12) is a blind hole. Eight threaded holes (12) are provided on the disk body (1).

9. A filter using the vent flange structure according to any one of claims 1-8, characterized in that: There are two of the said disc bodies (1) arranged in the horizontal direction, and a cylinder body (14) is arranged between adjacent disc bodies (1). Both ends of the cylinder body (14) in the length direction are respectively communicated with the inner sides of adjacent disc bodies (1). A filtering cavity is arranged in the cylinder body (14), and the axial communication holes (22) in each disc body (1) are all communicated with the filtering cavity. The long high-neck flanges (3) on the disc body (1) are rotationally symmetrically arranged with the cylinder body (14) as the center.

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