A filter

Abstract

The invention discloses a filter, including a frame, a main driver, a tape roller, a rubber belt, a tape roller, a filter cloth, a filter cloth roller, a weir, a distributor, a washer, a scraper, a filter cloth deviation corrector, a tape redirecting roller, a vacuum box, a movable trolley, and a vacuum box lifting device; the tape redirecting roller is arranged below the tape roller; the vacuum box includes an upper cone bucket and a lower cone bucket, which are arranged in the central area of ​​the filter and connected to the movable trolley through a support seat, at least two support seats are provided, and at least two corresponding movable trolleys are provided, the upper cone bucket and the lower cone bucket are connected through a quick opening structure, and a heating device and a heat preservation layer are provided outside the lower cone bucket; the vacuum box lifting device includes at least two lifting arms, a driver, and a travel switch, and the vacuum box lifting device is respectively arranged on both sides of the central area of ​​the filter. The invention enables the operator to walk and work upright in the filter; it is convenient to clean and repair the filtrate and dirt in the vacuum box; two vacuum boxes can be set to switch quickly to improve work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of filtering equipment, and in particular relates to a filter. Background Art

[0002] Due to factors such as manufacturing difficulty and the need to reduce weight, the diameter of the belt roller of a traditional rubber belt filter cannot be made very large. When the operator needs to inspect the vacuum box inside the filter, the height he can reach is often only below 1500mm. The operator must bend over to work when cleaning and inspecting the equipment, which makes the operation difficult. The diameter of the belt roller of small and medium-sized rubber belt filters will be even smaller, so the problem of difficulty in repairing the vacuum box will be more prominent.

[0003] In addition, most vacuum boxes are designed as semi-open fixed structures with an upper opening and a lower closed end. The upper opening is usually less than 100 mm. Such a small opening is not suitable for cleaning and maintenance of the vacuum box. The bottom plate of the traditional vacuum box is basically a horizontal structure, the filtrate flow rate is slow, the resistance is large, and the outside of the vacuum box lacks insulation and heating devices. When encountering high-viscosity or easily crystallized materials, the high-temperature filtrate inside the vacuum box is easy to generate heat transfer with the external atmosphere. After the heat inside the vacuum box is lost, the temperature of the filtrate will drop. When filtering certain conditions where a large amount of crystallized precipitates are produced due to temperature reduction, scaling is very easy to form inside the vacuum box, resulting in blockage, which greatly increases the frequency and difficulty of vacuum box cleaning. Summary of the invention

[0004] In view of this, the present invention hopes to provide a filter that increases the spacing between the upper and lower rubber belts without changing the diameter of the tape roller, allowing the operator to walk and work upright in the filter, reducing the risk of crystallization and blockage of the filtrate in the vacuum box due to temperature drop, facilitating the cleaning of the filtrate and dirt in the vacuum box and maintenance of operations, and two vacuum boxes can be set for quick switching to improve work efficiency.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A filter comprises a frame, a main drive, a tape roller, a rubber belt, a tape roller, a filter cloth, a filter cloth roller, a weir, a distributor, a washer, a scraper, a filter cloth corrector, and also comprises a tape redirecting roller, a vacuum box, a movable trolley, and a vacuum box lifting device; the tape redirecting roller is arranged below the tape roller; the vacuum box comprises an upper cone bucket and a lower cone bucket, which are arranged in the central area of ​​the filter and connected to the movable trolley through a support seat, at least two support seats are provided, and at least two corresponding movable trolleys are provided; the upper cone bucket is connected to the lower cone bucket through a quick-opening structure, a heating device and a thermal insulation layer are provided on the outside of the lower cone bucket, a supporting block is provided on the upper cone bucket, and a friction belt is provided on the supporting block to contact the rubber belt; the vacuum box lifting device comprises at least two lifting arms, a driver, and a travel switch, and the vacuum box lifting device is respectively arranged on both sides of the central area of ​​the filter.

[0007] Preferably, two vacuum boxes are provided, four corresponding support seats are provided, and four corresponding movable carts are provided. The vacuum boxes are respectively placed on the vacuum lifting devices on both sides of the central area of ​​the filter through the movable carts.

[0008] Furthermore, the driver is a self-locking hydraulic motor, cylinder or reduction motor, which synchronously drives the lifting arm to rise and fall through a chain and a sprocket.

[0009] Furthermore, the lifting arm is an L-shaped cantilever beam structure.

[0010] Furthermore, the heating equipment is welded together by coils or jackets.

[0011] Furthermore, the thermal insulation layer is wrapped with 30-150 mm mineral wool.

[0012] Furthermore, two ear plates with holes are provided at the upper end of the support seat, and legs with holes are provided at the bottom of the vacuum box. The vacuum box and the support seat are connected by inserting a pin into the ear plates with holes and the legs with holes.

[0013] Furthermore, a flipping device is provided on the support seat, and the flipping device includes a self-locking reducer, a transmission shaft, a transmission chain, and a sprocket.

[0014] The beneficial effects of the present invention are as follows: 1) The spacing between the upper and lower rubber belts is increased without changing the diameter of the tape roller, so that the operator can walk upright and work in the filter; 2) The bottom plate of the vacuum box is designed as an inclined cone bucket structure, and the filtrate flow rate is faster, which can produce a flushing and descaling effect on the inner surface of the vacuum box, and the vacuum box can be disassembled for easy cleaning and maintenance; 3) A heating and insulation device is provided on the outside of the vacuum box, which can reduce the risk of crystallization and blockage of the filtrate in the vacuum box due to temperature drop, and reduce the frequency and difficulty of cleaning the vacuum box; 4) The vacuum box can be flipped 360 degrees, which is convenient for cleaning the filtrate and dirt in the vacuum box and for operation and maintenance; 5) A vacuum box lifting device is provided in the filter, and two vacuum boxes, one for use and one for standby, can be set up for quick switching to improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front structure of a filter according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of a belt redirecting roller in a filter according to an embodiment of the present invention;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of a vacuum box composed of an upper cone and a lower cone according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the side structure of a vacuum box in a filter according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of a quick-opening structure between an upper cone and a lower cone of a vacuum box in a filter according to an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the front structure of a vacuum box, a support base and a trolley in a filter according to an embodiment of the present invention;

[0021] Figure 7 This is a schematic diagram of the side structure of a vacuum box, a support base and a trolley in a filter according to an embodiment of the present invention;

[0022] Figure 8 This is a schematic diagram of the position structure of a vacuum box and a lifting device in a filter according to an embodiment of the present invention;

[0023] Among them: 1 is a frame, 2 is a main drive, 3 is a tape roller, 4 is a rubber belt, 5 is a tape roller, 6 is a filter cloth, 7 is a filter cloth roller, 8 is a weir, 9 is a distributor, 10 is a scrubber, 11 is a scraper, 12 is a filter cloth corrector, 13 is a tape redirecting roller, 14 is an upper cone bucket, 15 is a lower cone bucket, 16 is a support seat, 17 is a movable trolley, 18 is a heating device and an insulation layer, 181 is a heating medium inlet, 182 is a heating medium outlet, 19 is a support block, 20 is a friction belt, 21 is a turning device, 211 is a transmission shaft, 212 is a transmission chain, 213 is a sprocket, 214 is a gear pair, 22 is a lifting arm, 23 is a driver, 24 is a travel switch, 25 is a mechanical lock, 26 is a quick-open structure, 27 is a support foot, and 28 is a filter cake. DETAILED DESCRIPTION

[0024] In order to more thoroughly understand the features and technical contents of the present invention, the implementation of the present invention is described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and explanation, and are not used to limit the present invention.

[0025] Figure 1 This is a schematic diagram of the front structure of a filter according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a belt redirecting roller in a filter according to an embodiment of the present invention. Figure 3 Schematic diagram of the three-dimensional structure of a vacuum box composed of an upper cone and a lower cone according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the side structure of a vacuum box in a filter according to an embodiment of the present invention. Figure 5 This is a schematic diagram of a quick-opening structure between an upper cone and a lower cone of a vacuum box in a filter according to an embodiment of the present invention. Figure 6 This is a schematic diagram of the front structure of a vacuum box, a support base and a trolley in a filter according to an embodiment of the present invention. Figure 7 This is a schematic diagram of the side structure of a vacuum box, a support base and a trolley in a filter according to an embodiment of the present invention. Figure 8 This is a schematic diagram of the position structure of a vacuum box and a lifting device in a filter according to an embodiment of the present invention, combined with Figures 1 to 8As shown, the filter includes a frame 1, a main drive 2, a tape roller 3, a rubber belt 4, a tape roller 5, a filter cloth 6, a filter cloth roller 7, a weir 8, a distributor 9, a washer 10, a scraper 11, a filter cloth deviation corrector 12, and also includes a tape redirecting roller 13, a vacuum box, a movable trolley 17, and a vacuum box lifting device; the tape redirecting roller 13 is arranged below the tape roller 3; the vacuum box includes an upper cone bucket 14 and a lower cone bucket 15, which are arranged in the central area of ​​the filter and are connected to the movable trolley 17 through a support seat 16, and the support seat 1 6 are provided with at least 2, and at least 2 are provided corresponding to the movable trolley 17, the upper cone bucket 14 is connected to the lower cone bucket 15 by a quick-opening structure, the lower cone bucket 15 is provided with a heating device and an insulation layer 18 on the outside, the upper cone bucket 14 is provided with a supporting block 19, the supporting block 19 is provided with a friction belt 20, and the support seat 16 is provided with a flipping device 21; the vacuum box lifting device includes at least 2 lifting arms 22, a driver 23, and a travel switch 24, and the vacuum box lifting device is respectively arranged on both sides of the central area of ​​the filter.

[0026] The rubber belt 4 is wound around the left and right tape rollers 3, and the rubber belt 4 is supported by tape rollers 5. The main driver 2 drives the rubber belt 4 to rotate, and a filter cloth 6 is laid on the rubber belt 4 and supported by filter cloth rollers 7.

[0027] The weir 8 divides the filter into different functional areas such as a feeding area, a washing area, and a drying area. The slurry is added from the distributor 9, and the solid particles in the slurry are intercepted by the filter cloth to form a filter cake 28. The liquid in the slurry passes through the filter cloth 6 and the grooves of the rubber belt 4 to the middle of the filter and flows into the vacuum box to form a filtrate. The washing liquid is added from the scrubber 10, and the filter cake on the surface of the filter cloth 6 moves to the left with the filter cloth 6. After the washing and dehydration operations are completed in sequence, the filter cake is separated from the filter cloth under the action of the scraper 11 and discharged out of the filter.

[0028] The filter cloth deviation corrector 12 is used to prevent the filter cloth 6 from deviating from the center line of the filter during movement. All the above components are installed on the frame.

[0029] Here, in the embodiment of the present invention, a tape redirecting roller 13 is added under each of the left and right tape rollers 3. The tape redirecting roller 13 changes the running direction of the rubber belt 4. Without changing the diameter of the left and right tape rollers 3, a larger spacing between the upper and lower rubber belts 4 can be obtained through the tape redirecting roller 13. At this time, the operator can walk and work upright between the upper and lower rubber belts 4, and the operating difficulty is reduced.

[0030] Furthermore, two vacuum boxes are provided, four corresponding to the support seats 16 , and four corresponding to the movable trolleys 17 . The vacuum boxes are respectively placed on the vacuum lifting devices on both sides of the central area of ​​the filter through the movable trolleys 17 .

[0031] Furthermore, the driver 23 is a self-locking hydraulic motor, a cylinder or a reduction motor, which synchronously drives the lifting arm 22 to rise and fall through a chain and a sprocket.

[0032] Furthermore, the lifting arm 22 is an L-shaped cantilever beam structure.

[0033] Here, the multiple lifting arms are lifted and lowered by their own sprocket chain mechanisms. The lifting arms are rigidly connected to the chains, and when the sprockets rotate, the chains and the lifting arms can be driven to perform lifting operations. To avoid shaking during the lifting process, the lifting arms are guided by independent columns, and different sprockets are connected in series by chain and sprocket mechanisms. Finally, a self-locking reduction motor is used to achieve synchronous drive. The reduction motor can be installed in the center area of ​​the filter. Height-adjustable travel switches are installed at the upper, middle and lower positions of the columns. A collision block is designed on the lifting arm. When the lifting arm reaches the specified position, the travel switch will be triggered to give an electrical signal. At this time, the electrical control box will stop the reduction motor from running, so that the lifting arm can stay at the specified position. Since the self-locking reduction motor has a self-locking function, after stopping operation, the lifting arm can stay at the specified position and will not slide up and down.

[0034] The conventional connection and use methods of the above-mentioned reduction motor, i.e., the reduction gear and the motor, the travel switch, and the electrical control box are all available in the market and are clearly known to those skilled in the art.

[0035] Here, the vacuum box lifting equipment is respectively installed on both sides of the central area of ​​the filter. The vacuum box with the movable trolley 17 can be lifted or lowered by the driver 23, and the lifting arm 22 can be synchronously controlled to stay at different positions by the travel switch 24. When the lifting arm 22 lifts the vacuum box with the movable trolley 17 to the top and fits the lower plane of the rubber belt 4, the lifting arm 22 is fixed by the mechanical lock 25, and the filter can work normally at this time; when the vacuum box needs to be cleaned or repaired, the mechanical lock 25 is opened first, and the travel switch 24 is used to make the lifting arm 22 lift the vacuum box with the movable trolley 17 and synchronously descend to the bottom, at this time, the vacuum box with the movable trolley 17 can be The vacuum box moves horizontally away from the lifting arm 22 for the next cleaning and maintenance operation; when the spare vacuum box needs to be used, the vacuum box lifting devices installed on both sides of the central area of ​​the filter work simultaneously, and the lifting arm 22 is synchronously lifted to the middle position through the travel switch 24. At this time, the spare vacuum box with the movable trolley 17 prepared in advance is moved from the lifting arm 22 on the other side of the central area to the lifting arm 22 on one side, and the lifting arm 22 is continued to lift the spare vacuum box with the movable trolley 17 to the top and fit the lower plane of the rubber belt 4 through the travel switch 24. The lifting arm 22 is fixed by the mechanical lock 25, and the filter can work normally at this time. Through the above, the filter can switch between the vacuum box and the spare vacuum box, and the spare vacuum box can be cleaned and maintained while the filter is working, which greatly saves downtime and maintenance time and improves work efficiency.

[0036] Here, the upper cone bucket 14 and the lower cone bucket 15 of the vacuum box are connected by a quick-opening structure 26, so that the upper cone bucket 14 and the lower cone bucket 15 can be quickly separated and cleaned and repaired quickly, which reduces the difficulty of cleaning and repair.

[0037] Here, the bottom plate of the vacuum box is designed as an inclined cone bucket structure. Compared with the traditional vacuum box with a horizontal bottom plate, the filtrate flow rate is faster. The high flow rate will flush and descale the inner surface of the vacuum box. This structure is more suitable for working conditions prone to scaling.

[0038] Here, a support block 19 is provided on the upper cone bucket 14, and a friction belt 20 is provided on the support block 19 to contact the rubber belt 4, so that the friction loss of the rubber belt can be reduced.

[0039] Furthermore, the heating equipment is welded together by coils or jackets.

[0040] Furthermore, the thermal insulation layer is wrapped with 30-150 mm mineral wool.

[0041] Here, a heating device and an insulation layer 18 are provided on the outside of the vacuum box. When the filter is working, hot water or low-pressure saturated steam is introduced into the heating medium inlet 181 in the heating device. Through the heat transfer effect, part of the heat lost by the heat transfer between the vacuum box and the surrounding atmosphere can be compensated, so as to reduce the risk of crystallization and blockage of the filtrate in the vacuum box due to the sudden drop in temperature, reduce the frequency and difficulty of cleaning the vacuum box, and finally, the hot water or low-pressure saturated steam introduced can be discharged from the heating medium outlet 182.

[0042] Furthermore, two ear plates with holes are provided at the upper end of the support seat 16, and a support leg 27 with holes is provided at the bottom of the vacuum box. The vacuum box and the support seat 16 are connected by inserting a pin into the ear plates with holes and the support leg 27 with holes.

[0043] Furthermore, a flipping device is provided on the support seat, and the flipping device includes a self-locking reducer, a transmission shaft 211 , a transmission chain 212 , and a sprocket 213 .

[0044] Here, the self-locking reducer can be driven by a hand wheel or a motor, and a gear pair 214 is designed between the vacuum box and the support seat. When the hand wheel is turned or the motor is driven, the output shaft of the self-locking reducer drives the transmission shaft 211, the transmission chain 212 and the sprocket 213 to rotate, and then drives the gear pair 214 to rotate, thereby driving the vacuum box to flip 360 degrees around the pin shaft. Because the self-locking reducer has a self-locking function, when the hand wheel is stopped or the motor is driven, the vacuum box can stay at any angle, so that the operator can choose a suitable angle for cleaning and maintenance operations. When the vacuum box rotates to the bottom, the liquid and foreign matter in the vacuum box can be directly poured out of the vacuum box, reducing the difficulty of cleaning and maintenance operations.

[0045] The specific models of the above-mentioned devices are not limited or described in detail, and the in-depth connection methods of the above-mentioned devices are not described in detail. As common knowledge, technicians in this field can understand it.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions and improvements 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, comprising a frame, a main drive, a tape roller, a rubber belt, a tape roller, a filter cloth, a filter cloth roller, a weir, a distributor, a washer, a scraper, and a filter cloth deviation corrector. It is characterized in that It also includes a tape redirecting roller, a vacuum box, a movable trolley, and a vacuum box lifting device; the tape redirecting roller is arranged below the tape roller; the vacuum box includes an upper cone bucket and a lower cone bucket, which are arranged in the central area of ​​the filter and are connected to the movable trolley by connecting a support seat, at least two support seats are provided, and at least two corresponding movable trolleys are provided; the upper cone bucket is connected to the lower cone bucket by a quick-opening structure; a heating device and a thermal insulation layer are provided on the outside of the lower cone bucket; a supporting block is provided on the upper cone bucket; a friction belt is provided on the supporting block to contact the rubber belt; the vacuum box lifting device includes at least two lifting arms, a driver, and a travel switch; the vacuum box lifting device is respectively provided on both sides of the central area of ​​the filter.

2. A filter according to claim 1, It is characterized in that The vacuum boxes are provided in two numbers, four corresponding to the support seats, and four corresponding to the movable trolleys. The vacuum boxes are respectively placed on the vacuum lifting devices on both sides of the central area of ​​the filter through the movable trolleys.

3. A filter according to claim 1, It is characterized in that The driver is a self-locking hydraulic motor, cylinder or reducer, which synchronously drives the lifting arm to rise and fall through a chain and a sprocket.

4. A filter according to claim 1, It is characterized in that The lifting arm is an L-shaped cantilever beam structure.

5. A filter according to claim 1, It is characterized in that The heating equipment is welded together by coils or jackets.

6. A filter according to claim 1, It is characterized in that The thermal insulation layer is wrapped with 30-150 mm mineral wool.

7. A filter according to claim 1, It is characterized in that The upper end of the support seat is provided with two ear plates with holes, and the bottom of the vacuum box is provided with supporting feet with holes. The vacuum box and the support seat are connected by inserting the ear plates with holes and the supporting feet with holes through a pin shaft.

8. A filter according to claim 1, It is characterized in that The support seat is provided with a turning device, and the turning device comprises a self-locking reducer, a transmission shaft, a transmission chain, and a sprocket.

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