Screen filter

Abstract

The utility model discloses a screen filter which comprises a tank body, an upper cover, a gas spring, a screen assembly and a locking screw, a liquid inlet and a liquid outlet are respectively arranged at the left upper part and the bottom of the tank body, a slag outlet is arranged at the right side of the tank body, the screen assembly is an inclined screen assembly, and the locking screw is arranged in the tank body. The inclined screen mesh assembly comprises a bottom ring, a pore plate, a screen mesh sheet, a pressing ring and a fastening screw, the bottom ring is obliquely welded in the middle of the tank body downwards from left to right, the lower edge of the slag outlet connected to the right side of the tank body is adjacent to the right lower end of the bottom ring, and the outer end of the slag outlet after connection inclines downwards; a first pipe opening and a second pipe opening are formed in the side wall of the left side of the tank body in the longitudinal direction, the first pipe opening and the second pipe opening are located above and below the bottom ring respectively, and a first telescopic water pipe with an upper cleaning ball at the inner end is connected into the first pipe opening in a sleeved mode; and a second telescopic water pipe of which the inner end is provided with a lower cleaning ball is sleeved in the second pipe opening.

Description

Technical Field

[0001] The utility model relates to a filter, in particular to a screen filter. Background Art

[0002] Pharmaceutical and chemical industries often use filters to filter some liquid materials. When the filter is filtering the liquid materials, a lot of filter residue will gradually accumulate on the screen. Excessive filter residue will block the screen, affecting the filtering speed and effect. Therefore, it is necessary to clean up the excessive filter residue on the screen in time to ensure normal operation. Since the screen in the existing filter is set horizontally, it is very inconvenient to remove the residue; and the horizontally set screen is also very inconvenient to clean. Generally, it is necessary to frequently open the upper cover of the filter and take out the internal screen for cleaning, which greatly reduces the work efficiency. Summary of the invention

[0003] The utility model provides a screen filter in view of the above-mentioned deficiencies. The screen filter is convenient for removing slag and does not need to frequently take out the screen in the filter for cleaning.

[0004] The utility model is implemented as follows: a screen filter comprises a tank body with a circular cross section, an upper cover, a gas spring, a screen assembly, and a locking screw. The upper left part and the bottom of the tank body are respectively provided with a liquid inlet and a liquid outlet, a slag outlet is provided on the right side of the tank body, and four machine feet are provided at the lower part of the tank body. The top of the upper cover is provided with a left mirror, a right mirror, a vent valve and a handle. The upper cover is connected to the tank body by a hinge. The screen assembly is an inclined screen assembly, which comprises a bottom ring, a perforated plate, a screen sheet, a clamping ring and a fastening screw. The bottom ring is circumferentially provided with a plurality of screw holes matching the fastening screws. The bottom ring is welded to the middle part of the tank body in an inclined manner. The welded bottom ring is gradually inclined downward from left to right, and its inclination is between 5° and 15°. The peripheries of the perforated plate, the screen sheet and the clamping ring are A plurality of hollow circular holes for fastening screws to pass through are provided, and the orifice plate, screen sheet and clamping ring are placed on the bottom ring in the tank body in sequence, and then they are fixed together by fastening screws; the shape and size of the connected orifice plate and screen sheet are adapted to the inner wall of the tank body; the lower side of the slag outlet connected to the right side of the tank body is adjacent to the right lower end of the bottom ring, and the outer end of the connected slag outlet is inclined downward, and the inclination of the slag outlet is the same as that of the bottom ring; an outer cover is provided at the outer end of the slag outlet; a first pipe opening and a second pipe opening are longitudinally arranged on the side wall on the left side of the tank body, and the first pipe opening and the second pipe opening are respectively located above and below the bottom ring, and a first telescopic water pipe with an upper cleaning ball at its inner end is sleeved in the first pipe opening, and similarly, a second telescopic water pipe with a lower cleaning ball at its inner end is sleeved in the second pipe opening.

[0005] The beneficial effects of the utility model are as follows: 1. An inclined screen assembly which gradually tilts downward from left to right is provided in the tank body of the filter, and a slag outlet which is connected to the lower right end of the inclined screen assembly is provided on the right side wall of the tank body, so that the filter residue on the screen sheet flows from high to low, and the slag discharge is smoother. 2. An upper cleaning ball and a lower cleaning ball are provided on the upper and lower parts of the inclined screen assembly, respectively, and the upper cleaning ball and the lower cleaning ball can clean the upper and lower parts of the inclined screen assembly at the same time, so that the cleaning is more comprehensive and the effect is better. 3. Because the inclined screen assembly in the tank body can be effectively cleaned directly, there is no need to frequently open the tank cover of the filter and take out the screen for cleaning, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a front view of a screen filter of the utility model;

[0007] Figure 2 yes Figure 1 A partial enlarged view of the middle circle A;

[0008] Figure 3 yes Figure 1 A top view of a mesh filter is shown;

[0009] Figure 4 yes Figure 1 A mesh filter as shown, but with the top cover removed;

[0010] Figure 5 It is another implementation of a screen filter of the utility model;

[0011] Figure 6 yes Figure 5 A partial enlarged view of the middle circle B;

[0012] Figure 7 Yes Figure 5 A schematic diagram of a mesh filter shown is placed on the ground plane. DETAILED DESCRIPTION

[0013] The embodiments of the present utility model are further described in detail below in conjunction with the accompanying drawings.

[0014] like Figures 1 to 3As shown, the screen filter has a tank body 1 with a circular cross section, and a screen assembly is arranged inside the tank body 1, wherein the screen assembly is an inclined screen assembly 17, and the inclined screen assembly 17 comprises a bottom ring 17a, a perforated plate 17b, a screen sheet 17c, a clamping ring 17d and a fastening screw 20, wherein the bottom ring 17a is provided with a plurality of screw holes matching the fastening screw 20 in the circumferential direction, and the bottom ring 17a is welded to the middle of the tank body 1 in an inclined manner, and the welded bottom ring 17a is gradually inclined downward from left to right, and the inclination thereof is between 5° and 15°; the peripheries of the perforated plate 17b, the screen sheet 17c and the clamping ring 17d are all provided with a plurality of hollow circular holes for the fastening screw 20 to pass through, and ... The mesh 17c and the clamping ring 17d are placed on the bottom ring 17a in the tank body in sequence, and then they are fixed together by tightening screws 20; the shape and size of the connected orifice plate 17b and the screen mesh 17c are adapted to the inner wall of the tank body 1; a slag outlet 2 with its outer end tilted downward is provided on the right side wall of the tank body, and the lower side of the connected slag outlet 2 is adjacent to the lower right end of the bottom ring 17a, and an outer cover 2a is provided at the outer end of the slag outlet 2; the inclination of the slag outlet 2 is the same as that of the bottom ring 17a; an upper cover 8 with a lower flange is provided on the flange 18 of the tank body 1, and the left end of the upper cover 8 is movably connected to the tank body 1 by a hinge 10, and the movable end of the upper cover 8 is locked with the flange 18 of the tank body 1 by a locking screw 3 (such as Figure 1 As shown in the figure, a gas spring 6 is connected to the front and rear sides of the middle of the upper cover 8, and the lower left ends of the two gas springs 6 are connected to the front and rear sides of the tank body 1 respectively; a vent valve 7 is provided on the top of the upper cover 8, and a left mirror 9, a right mirror 5 and a handle 4 are also provided on the upper cover 8; a first pipe opening 13 and a second pipe opening 15 are longitudinally arranged on the side wall on the left side of the tank body 1, and the first pipe opening and the second pipe opening are respectively located above and below the bottom ring 17a, and the first pipe opening is sleeved with its A first telescopic water pipe 12 with an upper cleaning ball 12a at its inner end, similarly, a second telescopic water pipe 14 with a lower cleaning ball 14a at its inner end is sleeved in the second pipe opening; a liquid inlet 11 is provided at the upper left portion of the tank body 1, a liquid outlet 19 is provided at the bottom wall in the middle of the tank body 1, and four machine feet are provided at the lower portion of the tank body 1, the four machine feet include two opposite left machine feet 16 and two opposite right machine feet 21, and the height of the two right machine feet 21 is equal to the height of the two left machine feet 16. Figure 4 yes Figure 1A screen filter is shown, but the upper cover is in an open state. When working, first close the outer cover 2a of the slag outlet 2, then the liquid to be filtered enters the tank body 1 from the liquid inlet 11, and the qualified liquid filtered by the screen sheet 17c comes out from the liquid outlet 19. The filter residue left on the screen sheet 17c of the inclined screen assembly after filtration is discharged from the slag outlet 2 regularly. Since the screen sheet 17c is in an inclined state, it is more convenient to discharge the residue; after the filter residue is discharged, when the inclined screen assembly 17 needs to be cleaned, the first telescopic water pipe 12 and the second telescopic water pipe 14 are pushed in and out at the same time, so that the upper cleaning ball 12a and the lower cleaning ball 14a are moved in and out at the same time to clean the upper and lower sides of the inclined screen assembly 17. At this time, the residue cleaned from the screen sheet 17c comes out from the slag outlet 2 along the slope of the screen, and the sewage falling into the bottom of the tank body is discharged from the liquid outlet 19. When it is necessary to replace the screen sheet 17c of the inclined screen assembly, loosen the locking screw 3 and open the upper cover 8. After the upper cover 8 is opened, the two gas springs 6 on both sides thereof will automatically support the upper cover 8, which is safe and reliable; then take out the screen sheet 17c in the tank body and replace it with screen sheets of different coarseness and fineness. After the screen is replaced, return it to its original position, and then observe whether the interior is normal through the left mirror 9 and the right mirror 5. If everything is normal, filter the next batch of liquid materials.

[0015] Figures 5 to 7 It is another embodiment of the utility model of a screen filter, and this screen filter is Figures 1 to 4 The structure of a mesh filter shown is basically the same, except that the mesh assembly is a horizontal mesh assembly 30, which includes a second bottom ring 30a, a second perforated plate 30b, a second mesh sheet 30c, and a second clamping ring 30d. The second bottom ring 30a is provided with a plurality of screw holes matching the fastening screws 20 in the circumferential direction. The second bottom ring 30a is welded horizontally to the middle of the tank body 1, and the second perforated plate 30b, the second mesh sheet 30c, and the second clamping ring 30d are placed in sequence on the second bottom ring 30a in the tank body, and then fixed together by the fastening screws 20. In addition, a second slag outlet 22 extending horizontally is provided at the upper right part of the tank body 1, and an end cover 22a is provided at the outer opening of the second slag outlet 22; the second slag outlet 22 replaces Figures 1 to 4 A second liquid outlet 23 extending horizontally is provided at the lower right part of the tank body 1. The second liquid outlet 23 replaces Figure 1 and Figure 4 The liquid outlet 19 in the tank body 1 is provided with two opposite second right machine feet 24 at the lower part of the tank body 1. The two second right machine feet 24 replace Figure 1 and Figure 4The height of the two second right machine feet 24 is slightly shorter than the height of the two left machine feet 16, so that the screen filter placed on the ground plane is tilted downward from left to right, and its inclination is Figure 1 The inclination of the inclined screen assembly 17 in the screen filter is the same. It can be seen that the inclination of the horizontal screen assembly 30 in the screen filter is the same as that of the horizontal screen assembly 30 in the screen filter. Figure 1 The inclination of the inclined screen assembly 17 in the embodiment is the same, and the functions produced by the two are also the same.

Claims

1. A screen filter, comprising a tank body with a circular cross section, an upper cover, a gas spring, a screen assembly, and a locking screw. The upper left and bottom of the tank body are respectively provided with a liquid inlet and a liquid outlet, a slag outlet is provided on the right side of the tank body, and four machine feet are provided at the bottom of the tank body. The top of the upper cover is provided with a left mirror, a right mirror, a vent valve and a handle. The upper cover is connected to the tank body by a hinge, and is characterized in that: The screen assembly is an inclined screen assembly (17), which comprises a bottom ring (17a), a perforated plate (17b), a screen sheet (17c), a clamping ring (17d) and a fastening screw (20). The bottom ring (17a) is provided with a plurality of screw holes matching the fastening screws (20) in the circumferential direction. The bottom ring (17a) is welded to the middle of the tank body (1) in an inclined manner. The ring (17a) is gradually inclined downward from left to right, and its inclination is between 5° and 15°; the peripheries of the orifice plate (17b), the screen sheet (17c) and the clamping ring (17d) are all provided with a plurality of hollow circular holes for the fastening screws (20) to pass through, the orifice plate (17b), the screen sheet (17c) and the clamping ring (17d) are sequentially placed on the bottom ring (17a) in the tank body, and then the fastening screws (20) are used to tighten them. The slag outlet (2) is connected to the right side of the tank body and is adjacent to the lower right end of the bottom ring (17a). The outer end of the slag outlet (2) is tilted downward, and the tilt of the slag outlet (2) is the same as the tilt of the bottom ring (17a). An outer cover (2a) is provided at the outer end of the slag outlet (2). A first pipe opening (13) and a second pipe opening (15) are longitudinally arranged on the left side wall of the tank body (1). The first pipe opening and the second pipe opening are respectively located above and below the bottom ring (17a). A first telescopic water pipe (12) with an upper cleaning ball (12a) at its inner end is sleeved in the first pipe opening. Similarly, a second telescopic water pipe (14) with a lower cleaning ball (14a) at its inner end is sleeved in the second pipe opening.

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