Rotary drum precision filter convenient for replacing filter screen

Abstract

The rotary drum precision filter comprises a main body, the filter screens, a rotary drum and a fixing assembly, the rotary drum comprises a connecting plate, the right side of the connecting plate is fixedly connected with a circular support, the filter screens are arranged outside the rotary drum, the number of the filter screens is three, and mounting notches are formed in the peripheries of the filter screens; a plurality of groups of grooves are formed in the circular support, the positions of the grooves correspond to the positions of the mounting notches, the width of the grooves is the same as that of the mounting notches, two groups of first springs are arranged in the grooves, one end of each first spring is fixedly connected with a connecting block, and the other end of each first spring is fixedly connected with the circular support; the lower portion of the connecting block is of a hollow structure, a second spring is arranged in the hollow interior of the connecting block, one end of the second spring is fixedly connected with a limiting plate, the other end of the second spring is fixedly connected with the connecting block, and the problem that a filter screen of an existing rotary drum precision filter is not easy to replace is solved.

Description

Technical Field

[0001] The utility model belongs to the technical direction of rotary drum precision filters, and specifically relates to a rotary drum precision filter which is convenient for replacing a filter screen. Background Art

[0002] A precision filter is a machine that uses gravity or pressure difference to make suspended matter pass through a porous medium, so that solid particles are trapped and the solid and liquid in the suspension are effectively separated.

[0003] In the prior art, during the use of the precision filter, the filter screen may be damaged. If the filter screen is replaced as a whole, the cost is too high. If the filter screen is only repaired, the use effect of the filter screen cannot be guaranteed. This phenomenon has become a problem that needs to be urgently solved by personnel in this field. Therefore, a rotary drum precision filter that is easy to replace the filter screen is designed, which can conveniently replace the filter screen. Utility Model Content

[0004] The utility model aims to provide a rotary drum precision filter which is convenient for replacing the filter screen in the existing device, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a rotary drum precision filter for easy replacement of filter screens, comprising a main body, a filter screen, a rotary drum and a fixing assembly, wherein the rotary drum comprises a connecting plate, a circular support is fixedly connected to the right side of the connecting plate, the filter screen is arranged outside the rotary drum, the filter screen is arranged in three groups, and installation slots are opened around the filter screen;

[0006] The circular support is provided with a groove, and the groove is provided with several groups. The position of the groove corresponds to the position of the installation notch and has the same width. A first spring is provided inside the groove, and two groups of the first spring are provided. One end of the first spring is fixedly connected to a connecting block, and the other end is fixedly connected to the circular support. The lower part of the connecting block is a hollow structure, and a second spring is provided inside the hollow part of the connecting block. One end of the second spring is fixedly connected to a limiting plate, and the other end is fixedly connected to the connecting block. A clamping groove is provided on the connecting block, and a circular hole is provided at the center of the upper part of the connecting block. A rotating shaft is provided inside the circular hole, and the upper end of the rotating shaft is fixedly connected to a clamping block, and the other end passes through the limiting plate and is fixedly connected to a fixed block.

[0007] The utility model further illustrates that a box cover is hingedly connected to the top of the main body, and a handle is arranged on the box cover.

[0008] The utility model further illustrates that a water outlet is fixedly connected to the lower left side of the main body, and a water inlet is fixedly connected to the upper right side of the main body.

[0009] The utility model further describes that four groups of circular supports are provided, and a transverse support is fixedly connected to the circular support. An auxiliary support is provided between two adjacent groups of the transverse supports, and the auxiliary support is fixedly connected to the circular support. A connecting ring is fixedly connected to the right side of the rightmost circular support.

[0010] The utility model further illustrates that a motor is fixedly connected to the upper left side of the main body, and the output end of the motor passes through the main body and is fixedly connected to the rotating drum.

[0011] The utility model further illustrates that a support seat is arranged on the right side of the connecting ring, the bottom of the support seat is fixedly connected to the inside of the main body, and an opening is arranged on the left side of the support seat, and the size of the opening matches the connecting ring.

[0012] The utility model further illustrates that a backwash pump is provided on the side of the main body, the backwash pump is fixedly connected to a backwash pipe, the backwash pipe is fixed inside the main body, and a nozzle is fixedly connected to the backwash pipe;

[0013] The side of the support seat is fixedly connected with a sewage trough and a sewage pipe.

[0014] Compared with the prior art, the beneficial effect achieved by the utility model is that the utility model can conveniently replace the filter screen by providing a fixing component, and can fix the filter screen at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a main schematic diagram of the utility model;

[0018] Figure 3 It is a partial structural schematic diagram of the utility model;

[0019] Figure 4 It is an enlarged schematic diagram of the A area of ​​the utility model;

[0020] Figure 5 It is a cross-sectional schematic diagram of the fixing assembly of the utility model;

[0021] In the figure: 1. main body; 2. box cover; 3. water outlet; 4. water inlet; 5. motor; 6. connecting plate; 7. circular support; 8. horizontal support; 9. auxiliary support; 10. connecting ring; 11. support seat; 12. filter; 13. installation notch; 14. groove; 15. first spring; 16. connecting block; 17. slot; 18. rotating shaft; 19. block; 20. fixing block; 21. second spring; 22. limit plate; 23. backwashing pipe; 24. backwashing pump; 25. nozzle; 26. sewage trough and sewage pipe. DETAILED DESCRIPTION

[0022] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only 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.

[0023] See also Figure 1-5 The utility model provides a technical solution: a rotary drum precision filter which is easy to replace the filter screen, comprising a main body 1, a filter screen 12, a rotary drum and a fixing assembly, a box cover 2 is hinged on the top of the main body 1, and a handle is provided on the box cover 2 to facilitate the staff to open the filter and check the inside of the filter.

[0024] A water outlet 3 is fixedly connected to the lower left side of the main body 1 for discharging filtered water, and a water inlet 4 is fixedly connected to the upper right side of the main body 1 for introducing water to be filtered.

[0025] The rotating drum includes a connecting plate 6, a circular support 7 is fixedly connected to the right side of the connecting plate 6, four groups of circular supports 7 are provided, a transverse support 8 is fixedly connected to the circular support 7, several groups of transverse supports 8 are provided, an auxiliary support 9 is provided between two adjacent groups of transverse supports 8, the auxiliary support 9 is fixedly connected to the circular support rod 7, and a connecting ring 10 is fixedly connected to the right side of the rightmost circular support 7, thereby forming the rotating drum as a whole.

[0026] A motor 5 is fixedly connected to the upper left side of the main body 1. The output end of the motor 5 passes through the main body 1 and is fixedly connected to the rotating drum. When the motor 5 starts to rotate, it drives the rotating drum to rotate.

[0027] A support seat 11 is arranged on the right side of the connecting ring 10, and the bottom of the support seat 11 is fixedly connected to the inside of the main body 1. An opening is arranged on the left side of the support seat 11, and the size of the opening matches the connecting ring 10, so that the connecting ring 10 and the support seat 11 are rotatably connected, thereby playing the role of supporting the connecting ring 10. The center of the right side of the support seat 11 is connected to the water inlet 4 for water intake.

[0028] The filter screen 12 is arranged outside the drum, and three groups of the filter screen 12 are arranged. The filter screen 12 is provided with installation slots 13 around it.

[0029] A groove 14 is provided on the circular support 7, and the groove 14 is provided with several groups. The position of the groove 14 corresponds to the position of the installation notch 13 and has the same width. A first spring 15 is provided inside the groove 14. Two groups of the first spring 15 are provided. One end of the first spring 15 is fixedly connected to a connecting block 16, and the other end is fixedly connected to the circular support 7. The lower part of the connecting block 16 is a hollow structure. A second spring 21 is provided inside the hollow of the connecting block 16. One end of the second spring 21 is fixedly connected to a limiting plate 22, and the other end is fixedly connected to the connecting block 16. A card slot 17 is provided on the connecting block 16. A circular hole is provided at the center of the upper part of the connecting block 16. A rotating shaft 18 is provided inside the circular hole. The upper end of the rotating shaft 18 is fixed It is connected with a card block 19, and the other end passes through a limit plate 22 and is fixedly connected with a fixed block 20. The card block 19 is consistent in width with the card slot 17. The card block 19 is pulled to disengage the card block 19 from the card slot 17 provided on the connecting block 16. The card block 19 is rotated 90° to make the length direction of the card block 19 consistent with the connecting block 16. At this time, the position of the filter screen 12 on the rotating drum can be determined, and the card block 19 is pulled again to stretch the second spring 21, drive the limit plate 22 to move upward, drive the connecting block 16 to move upward, and rotate the card block 19 90° to make the length direction of the card block 19 perpendicular to the length direction of the connecting block 16. The card block 19 is inserted into the card slot 17, thereby fixing the filter screen 12 to prevent the filter screen 12 from moving.

[0030] A backwash pump 24 is provided on the side of the main body 1. The backwash pump 24 is placed at the water outlet 3 of the filter or in a special water tank for pumping backwash water. The backwash pump 24 is fixedly connected to a backwash pipe 23. The backwash pipe 23 is fixed inside the main body 1. A nozzle 25 is fixedly connected to the backwash pipe 23. The nozzle 25 is provided in several groups.

[0031] The side of the support seat 11 is fixedly connected with a drain trough and a drain pipe 26. When there are too many impurities on the filter screen 12, resulting in reduced filtering effect and the water level in the filter rising, the backwash pump 24 is turned on to pump water in and spray it toward the filter screen 12 through the nozzle 25, spraying the impurities on the filter screen 12 down and dropping them into the drain trough and the drain pipe 26 before being discharged.

[0032] Working principle: When the filter screen 12 needs to be replaced, part of the filter screen 12 can be replaced according to the usage of the filter screen 12. First, pull the block 19 to disengage the block 19 from the slot 17 provided on the connecting block 16, rotate the block 19 90 degrees, so that the length direction of the block 19 is consistent with the connecting block 16, and then overlap the mounting notches 13 of the adjacent edges of the two sets of new filter screens 12, align the connecting block 16 and put them in, determine the position of the filter screen 12 on the drum, and then pull the block 19 to stretch the second spring 21, drive the limit plate 22 to move up, drive the connecting block 16 to move up, and rotate the block 19 90 degrees so that the length direction of the block 19 is perpendicular to the length direction of the connecting block 16, and at the same time perpendicular to the length direction of the mounting notch 13 on the filter screen 12. Due to the tension of the second spring 21, when the block 19 is inserted into the slot 17, the block 19 fixes the filter screen 12 to prevent the filter screen 12 from moving.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A rotary drum precision filter for easy replacement of filter screen, comprising a main body (1), a filter screen (12), a rotary drum and a fixing assembly, characterized in that: The rotary drum comprises a connecting plate (6), a circular support (7) is fixedly connected to the right side of the connecting plate (6), the filter screen (12) is arranged outside the rotary drum, three groups of the filter screen (12) are arranged, and installation slots (13) are arranged around the filter screen (12); The circular support (7) is provided with a groove (14), and the groove (14) is provided in a plurality of groups. The position of the groove (14) corresponds to the position of the installation notch (13) and the width is the same. A first spring (15) is provided inside the groove (14), and the first spring (15) is provided in two groups. One end of the first spring (15) is fixedly connected to a connecting block (16), and the other end is fixedly connected to the circular support (7). The lower part of the connecting block (16) is a hollow structure. The connecting block (16) is provided in a hollow structure. 16) A second spring (21) is arranged in the hollow interior, one end of the second spring (21) is fixedly connected to the limiting plate (22), and the other end is fixedly connected to the connecting block (16), a clamping groove (17) is provided on the connecting block (16), a circular hole is provided in the center of the upper part of the connecting block (16), a rotating shaft (18) is arranged in the circular hole, the upper end of the rotating shaft (18) is fixedly connected to the clamping block (19), and the other end passes through the limiting plate (22) and is fixedly connected to the fixing block (20).

2. The rotary drum precision filter for easy replacement of filter screen according to claim 1, characterized in that: A box cover (2) is hingedly connected to the top of the main body (1), and a handle is provided on the box cover (2).

3. The rotary drum precision filter for easy replacement of filter screen according to claim 2, characterized in that: A water outlet (3) is fixedly connected to the lower left side of the main body (1), and a water inlet (4) is fixedly connected to the upper right side of the main body (1).

4. The rotary drum precision filter for easy replacement of filter screen according to claim 3, characterized in that: The circular supports (7) are provided in four groups, and a transverse support (8) is fixedly connected to the circular supports (7). An auxiliary support (9) is provided between two adjacent groups of the transverse supports (8), and the auxiliary support (9) is fixedly connected to the circular supports (7). A connecting ring (10) is fixedly connected to the right side of the rightmost circular support (7).

5. The rotary drum precision filter with easy filter screen replacement according to claim 4, characterized in that: A motor (5) is fixedly connected to the upper left side of the main body (1), and the output end of the motor (5) passes through the main body (1) and is fixedly connected to the rotating drum.

6. The rotary drum precision filter for easy replacement of filter screen according to claim 5, characterized in that: A support seat (11) is arranged on the right side of the connecting ring (10), the bottom of the support seat (11) is fixedly connected to the inside of the main body (1), and an opening is arranged on the left side of the support seat (11), the size of the opening matching that of the connecting ring (10).

7. The rotary drum precision filter with easy filter screen replacement according to claim 6, characterized in that: A backwash pump (24) is arranged on the side of the main body (1), the backwash pump (24) is fixedly connected to a backwash pipe (23), the backwash pipe (23) is fixed inside the main body (1), and a nozzle (25) is fixedly connected to the backwash pipe (23); The side of the support seat (11) is fixedly connected with a sewage trough and a sewage pipe (26).

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