Anti-blocking device

Abstract

The utility model provides an anti-blocking device and relates to the technical field of filtering devices. The device comprises a valve, a filter box and a pump which are communicated in sequence, a filter mechanism is arranged in the filter box, a blow-down valve is arranged at the bottom of the filter box, the filter mechanism comprises a filter frame arranged on the inner wall of the filter box, two filter plates are arranged in the filter frame in a sliding mode, the two filter plates are in sliding contact, and a plurality of plate holes are formed in the filter plates; a driving assembly and a synchronizing assembly are arranged between the two filter plates, and the driving assembly drives the two filter plates to slide reversely, so that the plate holes of the two filter plates are subjected to state switching between complete overlapping and partial overlapping. According to the utility model, the blowdown valve is used for backwashing to automatically clean impurities intercepted by the filter holes and impurities attached to the filter holes.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, and particularly relates to an anti-blocking device. Background Art

[0002] In the process of chemical production, raw materials, reactants, and by-products may involve solid-liquid mixed phases. The solid-liquid mixed phases are transported through pumps and pipelines. In order to prevent the pump impeller or the pipelines in the next process from being blocked, a filter screen is set at the inlet of the pump to intercept large-particle solid phases.

[0003] In the prior art, after the filter screen has been filtering for a period of time, the inlet of the pump needs to be disassembled to clean the impurities filtered by the filter screen. Since there are often impurities remaining on the filter screen, the filter screen also needs to be cleaned. The cleaning operation is time-consuming and laborious, affecting the material transportation. Summary of the Utility Model

[0004] The purpose of the utility model is to develop an anti-blocking device that automatically cleans the impurities intercepted by the filter holes and the impurities attached to the filter holes through backwashing by a sewage discharge valve.

[0005] The utility model is realized through the following technical solutions:

[0006] An anti-blocking device, comprising:

[0007] A valve, a filter box, and a pump that are connected in sequence;

[0008] A filtering mechanism, which is arranged in the filter box;

[0009] A sewage discharge valve, which is arranged at the bottom of the filter box;

[0010] Wherein, the filtering mechanism includes a filter frame arranged on the inner wall of the filter box. Two filter plates are slidably arranged in the filter frame. The two filter plates are in sliding contact with each other, and a plurality of plate holes are arranged on the filter plates;

[0011] A driving component and a synchronization component are arranged between the two filter plates. The driving component drives the two filter plates to slide in opposite directions so that the plate holes of the two filter plates switch between a completely overlapping state and a partially overlapping state.

[0012] Optionally, the filtering mechanism is obliquely arranged in the filter box. The valve is connected to the filter box directly below the higher end of the filtering mechanism, and the pump is connected to the filter box directly above the lower end of the filtering mechanism.

[0013] Optionally, the plate holes are uniformly arranged in a matrix on the filter plates.

[0014] Optionally, sliding grooves that are in sliding contact with the edge parts of the two filter plates are arranged on the inner wall of the filter frame. The driving component and the synchronization component are arranged in the sliding grooves where the wide sides of the filter plates are located.

[0015] Optionally, the driving assembly includes telescopic cylinders disposed in the sliding grooves on the wide sides of the two filter plates. The two ends of the telescopic cylinders are respectively connected to the two filter plates. An expansion airbag is disposed in the telescopic cylinder, and an adjustment airbag is disposed at the top inside the filter box. A trachea communicates between the expansion airbag and the adjustment airbag.

[0016] Optionally, the driving assembly further includes an upper support plate and a lower support plate. The upper support plate is connected to the wide side of the upper filter plate, and the lower support plate is connected to the wide side of the lower filter plate. The two ends of the telescopic cylinder are respectively connected to the upper support plate and the lower support plate.

[0017] Optionally, both the upper support plate and the lower support plate are perpendicular to the filter plate, the telescopic cylinder is parallel to the wide side of the filter plate, and the two ends of the expansion airbag are respectively connected to the upper support plate and the lower support plate.

[0018] Optionally, the telescopic cylinder includes an inner cylinder and an outer cylinder that are coaxially and slidably connected. The inner cylinder is slidably disposed inside the outer cylinder and the two are slidably sealed.

[0019] Optionally, the synchronization assembly includes synchronization gears disposed on the wide sides of the two filter plates. The synchronization gears are rotatably connected to the sliding grooves at corresponding positions. An upper rack and a lower rack are respectively engaged with the upper and lower sides of the synchronization gears. The upper rack and the lower rack are respectively connected to the wide sides of the upper filter plate and the lower filter plate, and the upper rack and the lower rack are parallel to the wide side of the filter plate.

[0020] Optionally, the bottom of the filter box is in the shape of a quadrangular pyramid or a circular truncated cone that gradually narrows from top to bottom.

[0021] The beneficial effects of the present utility model are as follows:

[0022] The present utility model provides a filter box with a filtering mechanism before the pump to filter the liquid material before it enters the pump. The filtered impurities are deposited at the lower part of the filter box. When cleaning the impurities, the pump is stopped, the valve is closed, and the sewage discharge valve is opened to automatically discharge the impurities. Moreover, the filtered liquid material above the filtering mechanism is automatically used to wash the filtering mechanism. During the washing process of the filtering mechanism, its filter holes will automatically expand, and some impurities stuck or adhered in the filter holes can be washed away and discharged from the filter box. And the filter holes automatically shrink during the operation of the pump to filter the liquid material. The structure of the present utility model is simple and easy to use. The impurity discharge and washing work can be automatically opened and closed by using a sewage discharge valve. The pump shutdown time is short and no other disassembly and assembly work is required. The expansion and contraction of the filter holes are driven by the change of the liquid level in the filter box. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Structural diagram of the present utility model;

[0025] Figure 2 Internal structural diagram of the sliding groove;

[0026] Figure 3 Structural diagram when the plate holes of the two filter plates partially overlap;

[0027] Figure 4 Structural diagram when the plate holes of the two filter plates completely overlap.

[0028] Reference numerals: 1, valve; 2, filter box; 3, pump; 4, sewage discharge valve; 5, filtering mechanism; 51, filter frame; 52, sliding groove; 53, filter plate; 54, upper support plate; 55, telescopic cylinder; 56, lower support plate; 57, air pipe; 58, upper rack; 59, synchronous gear; 510, lower rack; 511, plate hole; 512, adjusting airbag. Detailed implementation manners

[0029] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0031] The following will detail the embodiments of the present utility model with reference to the drawings.

[0032] Such as Figures 1 to 4As shown in the figure, the utility model discloses a clogging prevention device, which includes a filter box 2 arranged between a valve 1 and a pump 3, and a filtering mechanism 5 is arranged in the filter box 2. The liquid material enters the filter box 2 from the valve 1, and after being filtered by the filtering mechanism 5 in the filter box 2, it is output by the pump 3.

[0033] The bottom of the filter box 2 is in the shape of a quadrangular pyramid or a circular truncated cone that gradually narrows from top to bottom, and a sewage discharge valve 4 is arranged at the bottom end of the filter box 2.

[0034] The filtering mechanism 5 is in the shape of a plate. The valve 1 is communicated with the filter box 2 below the filtering mechanism 5, and the pump 3 is communicated with the top of the filter box 2 above the filtering mechanism 5. The filtering mechanism 5 is inclined, the higher end of the filtering mechanism 5 is directly above the connection between the valve 1 and the filter box 2, and the lower end of the filtering mechanism 5 is directly below the connection between the pump 3 and the filter box 2.

[0035] The filtering mechanism 5 includes a filter frame 51 arranged along the inner wall of the filter box 2. The filter frame 51 is in the structure of a rectangular frame. Two layers of rectangular filter plates 53 are arranged in the filter frame 51. A plurality of plate holes 511 are arranged on the filter plates 53 in a matrix and evenly. The two layers of filter plates 53 are in sliding contact with each other. The plate holes 511 of the two layers of filter plates 53 are arranged in a staggered manner during filtration, so that the plate holes 511 of the two layers of filter plates 53 form an approximately elliptical filter hole. When the liquid material passes through a plurality of filter holes, it is filtered, and impurities are intercepted and sink into the filter box 2 below the filtering mechanism 5.

[0036] Sliding grooves 52 that are in sliding contact with the edge parts of the two filter plates 53 are arranged on the inner wall of the filter frame 51. A driving component and a synchronization component are arranged between the wide sides on both sides of the two filter plates 53. The driving component drives the two filter plates 53 to slide in the opposite direction along their wide sides, and the synchronization component makes the process of the two filter plates 53 sliding in the opposite direction synchronous.

[0037] The driving component includes an upper support plate 54 and a lower support plate 56. The upper support plate 54 is connected to the wide side of the upper filter plate 53, and the lower support plate 56 is connected to the wide side of the lower filter plate 53. Both the upper support plate 54 and the lower support plate 56 are perpendicular to the filter plate 53, and both the upper support plate 54 and the lower support plate 56 are located in the sliding grooves 52 at the corresponding positions. An expansion cylinder 55 is arranged between the upper support plate 54 and the lower support plate 56. The expansion cylinder 55 includes an inner cylinder and an outer cylinder that are coaxially and slidably connected. The inner cylinder is slidably arranged in the outer cylinder and the two are slidably sealed. Both the inner cylinder and the outer cylinder are perpendicular to the upper support plate 54 and the lower support plate 56. The inner cylinder is connected to the upper support plate 54, and the outer cylinder is connected to the lower support plate 56. An expansion airbag is arranged in the expansion cylinder 55, and both ends of the expansion airbag are respectively connected to the upper support plate 54 and the lower support plate 56. The expansion airbag is arranged in the sealed expansion cylinder 55, so that the expansion airbag is isolated from the outside.

[0038] There are two adjusting air bags 512 provided at the top inside the filtering box 2, and the two adjusting air bags 512 are respectively located directly above the wide sides of the filter plates 53. An air pipe 57 is connected to the expansion and contraction air bag, and the air pipe 57 passes through the outer cylinder and the filtering frame 51 and then communicates upward with the upper adjusting air bag 512. The adjusting air bag 512 and the multiple air pipes 57 and multiple expansion and contraction air bags below together form a sealed air cavity.

[0039] When the pump 3 operates to transport the liquid material into the filtering box 2 through the valve 1, the filtering box 2 is filled with the liquid material. The adjusting air bag 512 contracts under the action of the water pressure, the air pressure in the sealed air cavity rises, the expansion and contraction air bag elongates, and the expansion and contraction cylinder 55 elongates accordingly. The expansion and contraction cylinder 55 drives the two filter plates 53 to slide in the opposite direction, and the two filter plates 53 slide in the direction away from each other. When the pump 3 stops operating and the sewage discharge valve 4 is opened for sewage discharge, the liquid level in the filtering box 2 drops, the adjusting air bag 512 is exposed and the external space thereof is in a negative pressure state. At this time, the adjusting air bag 512 expands under the action of the air pressure, the internal air pressure of the sealed air cavity decreases, the expansion and contraction air bag shortens, the expansion and contraction cylinder 55 shortens and drives the two filter plates 53 to slide in the opposite direction, and the two filter plates 53 slide in the direction approaching each other. Since the expansion and contraction air bag is arranged inside the sealed expansion and contraction cylinder 55, the expansion and contraction air bag is not affected by the external water pressure.

[0040] The synchronization assembly includes synchronization gears 59 provided at the wide side parts of the two filter plates 53. The synchronization gears 59 are rotatably connected to the corresponding sliding grooves 52. Upper racks 58 and lower racks 510 are respectively engaged with the upper and lower sides of the synchronization gears 59. The upper racks 58 and the lower racks 510 are respectively connected to the wide sides of the upper filter plate 53 and the wide sides of the lower filter plate 53. The upper racks 58 and the lower racks 510 are arranged parallel to the wide sides of the filter plates 53. When the two filter plates 53 slide in the opposite direction, through the transmission of the upper racks 58, the lower racks 510 and the synchronization gears 59, the synchronous reverse sliding of the two filter plates 53 is realized.

[0041] When filtering, valve 1 is opened and pump 3 runs. The liquid material enters the filtering box 2 through valve 1. The regulating airbag 512 shrinks under the water pressure, the telescopic airbag elongates, and the two filter plates 53 slide away from each other. The plate holes 511 of the two filter plates 53 are misaligned and there is a partially overlapping area. This overlapping area forms a filter hole. When the liquid material passes through the filter hole, it is filtered and impurities are intercepted. Most of the impurities settle at the lower part of the filtering box 2 under the action of gravity, and a small part of the impurities adhere to the filter hole. After filtering for a period of time, there are many impurities accumulated at the lower part of the filtering box 2. When cleaning is required, the operation of pump 3 is stopped, valve 1 is closed, and the sewage discharge valve 4 is opened. The remaining liquid material in the filtering box 2 is discharged from the filtering box 2 under the action of gravity, and the impurities at the lower part of the filtering box 2 are also discharged accordingly. As the liquid level begins to drop, the inside of the filtering box 2 outside the regulating airbag 512 is in a negative pressure state, the regulating airbag 512 expands, the telescopic airbag and the telescopic cylinder 55 shorten, and the two filter plates 53 slide closer to each other. The overlapping area of the plate holes 511 of the two filter plates 53 gradually increases until the plate holes 511 of the two filter plates 53 completely coincide. At this time, the plate holes 511 of the two filter plates 53 are the filter holes. During the downward flow of the liquid material in the filtering box 2, the impurities remaining in the plate holes 511 are washed away and finally discharged by the sewage discharge valve 4. When pump 3 runs again for the filtering operation, after the filtering box 2 is filled with liquid material and the regulating airbag 512 is submerged, the regulating airbag 512 shrinks under the water pressure, the telescopic airbag elongates, the two filter plates 53 slide away from each other, and there is a partially overlapping area in the plate holes 511 of the two filter plates 53, forming an approximately elliptical filter hole again.

[0042] In the present utility model, a filtering box 2 with a filtering mechanism 5 is provided in front of pump 3 to filter the liquid material before it enters pump 3. The filtered impurities are deposited at the lower part of the filtering box 2. When cleaning the impurities, pump 3 stops, valve 1 is closed, and opening the sewage discharge valve 4 can automatically remove the impurities, and automatically use the filtered liquid material above the filtering mechanism 5 to wash the filtering mechanism 5. During the washing process of the filtering mechanism 5, its filter holes will automatically expand, and some impurities stuck or adhered in the filter holes can be washed away and discharged from the filtering box 2. And the filter holes automatically shrink when pump 3 runs to filter the liquid material. The structure of the present utility model is simple and easy to use. The opening and closing of the sewage discharge valve 4 can automatically realize the impurity discharge and washing work. The shutdown time of pump 3 is short and no other disassembly and assembly work is required. The enlargement and reduction of the filter holes are driven by the change of the liquid level in the filtering box 2.

[0043] The above embodiments are only the preferred embodiments of the present utility model, and do not limit the technical solutions of the present utility model. As long as the technical solutions that can be realized on the basis of the above embodiments without creative labor shall be regarded as falling within the scope of the patent rights of the present utility model.

Claims

1. A clogging prevention device, characterized in that, Comprising: A valve, a filter box and a pump connected in sequence; A filtering mechanism disposed inside the filter box; A sewage discharge valve disposed at the bottom of the filter box; Wherein, the filtering mechanism includes a filter frame disposed on the inner wall of the filter box, two filter plates are slidably disposed inside the filter frame, the two filter plates are in sliding contact, and a plurality of plate holes are provided on the filter plates; A driving component and a synchronization component are disposed between the two filter plates, and the driving component drives the two filter plates to slide in opposite directions to switch the state of the plate holes on the two filter plates between complete overlap and partial overlap.

2. The anti-clogging device according to claim 1, characterized in that, The filtering mechanism is disposed obliquely in the filter box, the valve is connected to the filter box directly below the higher end of the filtering mechanism, and the pump is connected to the filter box directly above the lower end of the filtering mechanism.

3. The anti-clogging device according to claim 1, wherein The plate holes are uniformly arranged in a matrix on the filter plates.

4. The anti-clogging device according to claim 1, characterized in that, Sliding grooves that slidably contact the edge portions of the two filter plates are provided on the inner wall of the filter frame, and the driving component and the synchronization component are disposed in the sliding grooves where the wide sides of the filter plates are located.

5. The anti-blocking device according to claim 4, characterized in that, The driving component includes telescopic cylinders disposed in the sliding grooves on the wide side portions of the two filter plates, the two ends of the telescopic cylinders are respectively connected to the two filter plates, a telescopic airbag is disposed inside the telescopic cylinder, an adjusting airbag is provided at the top inside the filter box, and an air pipe is connected between the telescopic airbag and the adjusting airbag.

6. The anti-clogging device according to claim 5, characterized in that, The driving component further includes an upper support plate and a lower support plate, the upper support plate is connected to the wide side of the upper filter plate, the lower support plate is connected to the wide side of the lower filter plate, and the two ends of the telescopic cylinder are respectively connected to the upper support plate and the lower support plate.

7. The anti-clogging device according to claim 6, characterized in that, Both the upper support plate and the lower support plate are perpendicular to the filter plates, the telescopic cylinder is parallel to the wide side of the filter plates, and the two ends of the telescopic airbag are respectively connected to the upper support plate and the lower support plate.

8. The anti-clogging device according to claim 7, wherein, The telescopic cylinder includes an inner cylinder and an outer cylinder that are coaxially and slidably connected, and the inner cylinder is slidably disposed inside the outer cylinder and the two are slidably sealed.

9. The anti-blocking device according to claim 4, characterized in that, The synchronization component includes synchronization gears disposed on the wide side portions of the two filter plates, the synchronization gears are rotatably connected to the sliding grooves at corresponding positions, an upper rack and a lower rack are respectively engaged with the upper and lower sides of the synchronization gears, the upper rack and the lower rack are respectively connected to the wide side of the upper filter plate and the wide side of the lower filter plate, and the upper rack and the lower rack are parallel to the wide side of the filter plates.

10. The anti-blocking device according to any one of claims 1 to 9, characterized in that, The bottom of the filter box is in the shape of a quadrangular pyramid or a circular cone that gradually narrows from top to bottom.

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