Belt vacuum filter

Abstract

The application discloses a belt type vacuum filter, which comprises a rubber conveying belt and a filter belt, the rubber conveying belt is provided with first transmission shafts at both ends, the rubber conveying belt is provided with leakage holes, the filter belt is in contact with the upper end surface of the rubber conveying belt, a plurality of driven roller shafts are arranged on the two sides and the lower part of the filter belt, a vacuum box is arranged at the lower end of the contact and bonding layer of the rubber conveying belt and the filter belt, supports are arranged on the two sides of the rubber conveying belt and the filter belt, the two ends of the first transmission shafts and the driven roller shafts are rotationally connected with the supports, inclined supporting roller shafts are arranged on the two sides of the rubber conveying belt, the inclined supporting roller shafts are in extrusion contact with the side edges of the middle part of the rubber conveying belt, and the inclined supporting roller shafts are connected with the supports through connecting rods.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum filter technology, specifically relating to a belt vacuum filter. Background Technology

[0002] In the filtration process of a belt vacuum filter, the filtrate enters the feeder from the feed trough and is then evenly spread on the moving belt filter cloth. The belt filter cloth is driven by a rubber conveyor belt. Under the vacuum suction of the vacuum box, the filtrate accelerates through the belt filter cloth and enters the vacuum box. Then, it enters the collection tank through the drain hole of the vacuum box for recycling.

[0003] The practical problem encountered in filtration is that the filtrate is in a flowing state. If the filtrate is directly discharged onto the filter cloth, it will leak from both sides of the cloth. Current industry practice involves adding raised skirts to the rubber conveyor belt. After the filter cloth is laid on the belt, the sides automatically lift up, and the flowing slurry is confined to the belt by the skirts. However, the skirts are fixed to the rubber belt using adhesive, vulcanization, or belt studs. During the transmission of the conveyor belt by the drive or driven rollers, the skirts are subjected to compression deformation. Prolonged compression can cause the skirts to wear off and detach, requiring repair and maintenance, consuming manpower and resources, and reducing production efficiency. Utility Model Content

[0004] This application proposes a belt vacuum filter in which the sides of the filter belt are raised to replace the side skirts of the rubber belt. This prevents the filtrate from spilling from both sides and avoids the side skirts of the conveyor belt from falling off during transmission, thereby improving the service life of the conveyor belt.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A belt vacuum filter includes a rubber conveyor belt and a filter belt. First drive shafts are located at both ends of the rubber conveyor belt. The rubber conveyor belt has perforations. The filter belt is in contact with and adheres to the upper surface of the rubber conveyor belt. Multiple driven rollers are located on both sides and below the filter belt. A vacuum chamber is located at the lower end of the contact layer between the rubber conveyor belt and the filter belt. Supports are located on both sides of the rubber conveyor belt and the filter belt. The ends of the first drive shafts and the driven rollers are rotatably connected to the supports. Inclined support rollers are located on both sides of the rubber conveyor belt, and these rollers are in pressing contact with the middle side of the rubber conveyor belt. The inclined support rollers are connected to the supports via connecting rods.

[0006] In one embodiment of this application, the bottom end of the connecting rod is connected to the bracket via a telescopic rod, the upper end of the connecting rod is provided with a turntable, and one side of the turntable is connected to an inclined support roller.

[0007] In one embodiment of this application, a scraper is provided on the side of the filter belt, with one end of the scraper approaching the surface of the filter belt.

[0008] In one embodiment of this application, guide plates are provided on both sides of the scraper, and the other end of the scraper is connected to the upper end of the material trough.

[0009] In one embodiment of this application, a nozzle is disposed above the filter belt.

[0010] In one embodiment of this application, a recycling tank is provided below the nozzle.

[0011] In one embodiment of this application, a tensioning roller is provided below the filter belt, and bushings are provided at both ends of the tensioning roller, the bushings being connected to the telescopic ends of the telescopic column.

[0012] In summary, the technical solution proposed in this application includes the following beneficial technical effects: Under the compression support of the inclined support rollers on both sides of the rubber conveyor belt, the two sides of the rubber conveyor belt undergo elastic deformation and curl upwards. No leakage holes are provided on the two sides of the rubber conveyor belt, meaning that the curled edges on both sides of the rubber belt can be used to prevent the flowing filtrate from leaking from both sides of the filter belt. Due to its own elasticity, the rubber conveyor belt rebounds to a flat state before contacting the first rotating shaft and makes transmission contact with the first rotating shaft. The filtrate between the curled edges is attracted by the vacuum box and filtered through the filter belt during the flow process. Compared to setting side guards or skirts on both sides, the curled edges of the rubber belt prevent the skirt from folding and tearing during the transmission process of the inclined support rollers, avoiding the skirt from falling off during transmission and improving the replacement service life of the rubber conveyor belt. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a side-view perspective view of a belt vacuum filter provided in an embodiment of this application. Figure 2 This is a top-view perspective view of a belt vacuum filter provided in an embodiment of this application. Figure 3 This is a schematic diagram of a test cross-sectional structure of a belt vacuum filter provided in an embodiment of this application; Figure 4 This is a schematic diagram of the connecting rod structure of a belt vacuum filter provided in an embodiment of this application; Figure 5 This is a top view of a belt vacuum filter provided in an embodiment of this application; Figure 6 This is a side view of a belt vacuum filter provided in an embodiment of this application.

[0015] In the diagram: discharge pipe 100; Rubber conveyor belt 1, first drive shaft 11; Filter belt 2, nozzle 21, recovery tank 211; Driven roller shaft 3; Vacuum box 4; 5. Bracket; 6. Inclined support roller; 61. Connecting rod; 611. Telescopic rod; 612. Turntable; Scraper 7, guide plate 71; Material trough 8, tension roller shaft 9, bushing 91, telescopic column 92. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0017] It should be noted that in the description of this application, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0018] In this application, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of these terms in this application based on the specific circumstances.

[0019] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0020] This embodiment provides a belt vacuum filter, see reference. Figures 1-6 As shown, the system includes a rubber conveyor belt 1 and a filter belt 2. The rubber conveyor belt 1 has first drive shafts 11 at both ends and perforations. The filter belt 2 is in contact with the upper surface of the rubber conveyor belt 1. Multiple driven rollers 3 are arranged on both sides and below the filter belt 2. A vacuum box 4 is located at the lower end of the contact layer between the rubber conveyor belt 1 and the filter belt 2. Supports 5 are provided on both sides of the rubber conveyor belt 1 and the filter belt 2. The first drive shafts 11 and the driven rollers 3 are rotatably connected to the supports 5. Inclined support rollers 6 are provided on both sides of the rubber conveyor belt 1, and these rollers 6 are in contact with the middle side of the rubber conveyor belt 1. The inclined support rollers 6 are connected to the supports 5 via connecting rods 61.

[0021] In the above embodiment, the rubber conveyor belt 1 is provided with first drive shafts 11 at both ends, such as... Figure 3 As shown, the two first drive shafts 11 rotate, driving the rubber conveyor belt 1 to rotate in the direction indicated by the arrow. The rubber conveyor belt 1 has perforations, but no perforations are provided on its two sides. The filter belt 2 is in contact with and adheres to the upper surface of the rubber conveyor belt 1. Multiple driven rollers 3 are arranged on both sides and below the filter belt 2, meaning that the filter belt 2 contacts the rubber conveyor belt 1. The rubber conveyor belt 1 drives the filter belt 2 to rotate around the multiple driven rollers 3. Further, as... Figure 3 As shown, the filter belt 2 passes through multiple driven rollers 3 in a bent shape for transmission, which helps to increase the contact area between the filter belt 2 and the driven rollers 3, thereby increasing the friction between the filter belt 2 and the driven rollers 3, preventing the filter belt 2 from slipping during rotation, and improving the stability of the filter belt 2 during transmission. A vacuum box 4 is provided at the lower end of the contact bonding layer between the rubber conveyor belt 1 and the filter belt 2. The discharge pipe 100 above the filter belt 2 discharges the filtrate onto the filter belt 2. Under the vacuum suction of the vacuum box 4, the filtrate accelerates through the filter belt 2 and is drawn into the vacuum box 4 through the leakage holes of the rubber conveyor belt 1. Then, it is discharged into the collection tank through the discharge pipe of the vacuum box 4 for recycling. The solid particles in the filtrate are trapped on the upper end surface of the filter belt 2 to achieve filtration of the solid particles in the filtrate. In addition, inclined support rollers 6 are provided on both sides of the rubber conveyor belt 1, and the inclined support rollers 6 are in contact with the middle of the rubber conveyor belt 1. Figure 1As described above, under the compression support of the inclined support rollers 6 on both sides, the two sides of the rubber conveyor belt 1 undergo elastic deformation and curl upwards. There are no leakage holes on the two sides of the rubber conveyor belt 1, that is, the curled edges on both sides of the rubber conveyor belt 1 can be used to prevent the flowing filtrate from leaking from both sides of the filter belt 2. Due to its own elasticity, the rubber conveyor belt 1 rebounds to a flat state before contacting the first drive shaft 11 and makes transmission contact with the first drive shaft 11. The filtrate between the curled edges is attracted by the vacuum box 4 and filtered by the filter belt 2 during the flow process. Compared with the side guards and skirts on both sides, the rubber conveyor belt 1 will not have its skirt folded or torn during the transmission process of the inclined support rollers 6, avoiding the skirt of the rubber conveyor belt 1 from falling off during the transmission process and improving the replacement service life of the rubber conveyor belt 1.

[0022] In one embodiment of this application, see reference Figure 4 As shown, the bottom end of the connecting rod 61 is connected to the bracket 5 via a telescopic rod 611, and a turntable 612 is provided at the upper end of the connecting rod 61. An inclined support roller 6 is connected to one side of the turntable 612.

[0023] In the above embodiment, the bottom end of the connecting rod 61 is connected to the bracket 5 via a telescopic rod 611. By controlling the extension and shortening of the telescopic rod 611, the distance between the connecting rod 61 and the rubber conveyor belt 1 is adjusted, that is, the degree of compression of the bottom edge of the rubber conveyor belt 1 by the inclined support roller 6 is adjusted, thereby adjusting the height of the side of the rubber conveyor belt 1. Further, a turntable 612 is provided at the upper end of the connecting rod 61, and an inclined support roller 6 is connected to one side of the turntable 612. By adjusting the rotation of the turntable 612, the inclined support roller 6 is driven to deflect, thereby adjusting the contact angle between the inclined support roller 6 and the rubber conveyor belt 1. This is beneficial to improving the adjustment flexibility of the inclined support roller 6, so that the compression of the rubber conveyor belt 1 by the inclined support roller 6 meets the actual operation requirements. Optionally, multiple slots are provided on the turntable 612, and a hole is provided on the connecting rod 61. A pin is inserted through the hole and into the slot on the turntable 612 to fix and position the turntable 612.

[0024] In one embodiment of this application, see [reference] Figure 6 As shown, a scraper 7 is provided on the side of the filter belt 2, and one end of the scraper 7 is close to the surface of the filter belt 2.

[0025] In the above embodiment, one end of the scraper 7 is close to the surface of the filter belt 2 to scrape off solid particles attached to the surface of the filter belt 2, preventing solid particles from adhering to the surface of the filter belt 2 and causing blockage of the filter pores of the filter belt 2, which is beneficial to improving the permeability of the filter belt 2 and improving the filtration efficiency.

[0026] In one embodiment of this application, see reference Figure 5As shown, guide plates 71 are provided on both sides of the scraper 7, and the other end of the scraper 7 is connected to the upper end of the material trough 8.

[0027] In the above embodiment, the scraper 7 is set at an angle. The solid precipitate scraped off from the filter belt 2 by one end of the scraper 7 slides down into the material tank 8 for collection, which facilitates the unified treatment of the precipitate in the later stage.

[0028] In one embodiment of this application, see reference Figure 6 As shown, a nozzle 21 is provided above the lower filter belt 2.

[0029] In the above embodiment, the nozzle 21 is used to rinse the filter belt 2, wash away the residue attached to the surface, prevent filter impurities from clogging the filter holes, and thus help improve the filtration efficiency.

[0030] In one embodiment of this application, see reference Figure 6 As shown, a recycling tank 211 is provided below the nozzle 21.

[0031] In the above embodiment, the recycling tank 211 is used to collect the flushing and cleaning liquid of the filter belt 2. After standing and filtering, it can be reused, saving water resources.

[0032] In one embodiment of this application, see reference Figure 3 As shown, a tensioning roller 9 is provided below the filter belt 2, and bushings 91 are provided at both ends of the tensioning roller 9. The bushings 91 are connected to the telescopic ends of the telescopic column 92.

[0033] In the above embodiment, the telescopic end of the telescopic column 92 pulls the bushing 91 down, thereby driving the tensioning roller 9 down. This increases the stroke of the filter belt 2 while keeping the overall length of the filter belt 2 unchanged, pulling the filter belt 2 to tension it, increasing the friction between the filter belt 2 and the roller, which is beneficial to the stability of the filter belt 2 in the transmission between the rollers.

[0034] In actual use, the filter belt 2 is in contact with the upper surface of the rubber conveyor belt 1. Multiple driven rollers 3 are arranged on both sides and below the filter belt 2. That is, the filter belt 2 contacts the rubber conveyor belt 1, and the rubber conveyor belt 1 drives the filter belt 2 to rotate around the multiple driven rollers 3. Figure 3As shown, the filter belt 2 passes through multiple driven rollers 3 in a bent shape for transmission. A vacuum box 4 is provided at the lower end of the contact layer between the rubber conveyor belt 1 and the filter belt 2. The discharge pipe 100 above the filter belt 2 discharges the filtrate onto the filter belt 2. Under the vacuum suction of the vacuum box 4, the filtrate accelerates through the filter belt 2 and is drawn into the vacuum box 4 through the holes of the rubber conveyor belt 1. Then, it is discharged into the collection tank through the drain pipe of the vacuum box 4 for recycling. The solid particles in the filtrate are trapped on the upper end surface of the filter belt 2 to achieve filtration of the solid particles in the filtrate. Inclined support rollers 6 are provided on both sides of the rubber conveyor belt 1, and the inclined support rollers 6 are in contact with the middle of the rubber conveyor belt 1. Figure 1 As shown, under the compression support of the inclined support rollers 6 on both sides, the two sides of the rubber conveyor belt 1 undergo elastic deformation and curl upwards. Compared with the side guards and skirts provided on both sides, the skirts of the rubber conveyor belt 1 will not fold or tear during the transmission process of the inclined support rollers 6, thus preventing the skirts of the rubber conveyor belt 1 from falling off during the transmission process and improving the replacement service life of the rubber conveyor belt 1.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A belt vacuum filter, characterized in that, The system includes a rubber conveyor belt (1) and a filter belt (2). The rubber conveyor belt (1) has a first drive shaft (11) at both ends. The rubber conveyor belt (1) has a hole. The filter belt (2) is in contact with the upper end face of the rubber conveyor belt (1). The filter belt (2) has multiple driven roller shafts (3) on both sides and below. The lower end of the contact layer between the rubber conveyor belt (1) and the filter belt (2) is provided with a vacuum box (4). The rubber conveyor belt (1) and the filter belt (2) are provided with brackets (5). The first drive shaft (11) and the driven roller shafts (3) are rotatably connected to the brackets (5). The rubber conveyor belt (1) has inclined support roller shafts (6) on both sides. The inclined support roller shafts (6) are in contact with the middle side of the rubber conveyor belt (1). The inclined support roller shafts (6) are connected to the brackets (5) through connecting rods (61).

2. The belt vacuum filter according to claim 1, characterized in that, The bottom end of the connecting rod (61) is connected to the bracket (5) via a telescopic rod (611). A turntable (612) is provided at the upper end of the connecting rod (61), and an inclined support roller (6) is connected to one side of the turntable (612).

3. The belt vacuum filter according to claim 1, characterized in that, The filter belt (2) is provided with a scraper (7) on its side, with one end of the scraper (7) approaching the surface of the filter belt (2).

4. The belt vacuum filter according to claim 3, characterized in that, The scraper (7) is provided with guide plates (71) on both sides, and the other end of the scraper (7) is connected to the upper end of the material trough (8).

5. The belt vacuum filter according to claim 1, characterized in that, A nozzle (21) is provided above the filter belt (2) in the lower layer.

6. The belt vacuum filter according to claim 5, characterized in that, A recycling tank (211) is provided below the nozzle (21).

7. The belt vacuum filter according to any one of claims 1-6, characterized in that, A tensioning roller (9) is provided below the filter belt (2), and bushings (91) are provided at both ends of the tensioning roller (9). The bushings (91) are connected to the telescopic ends of the telescopic column (92).

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