A stable discharge structure for a vacuum belt filter

Abstract

This utility model discloses a stable discharge structure for a vacuum belt filter, relating to the field of vacuum belt filter technology. It includes a support frame with a drive roller mounted on it. A rubber belt is fitted around the drive roller, and a filter cloth is placed around the rubber belt. A base frame is located at one end of the support frame, and a scraper is hinged to the base frame. A cylinder is hinged to the lower side of the scraper. This utility model, through the design of a purge box, an air inlet pipe, and an electromagnetic pulse valve, allows high-pressure gas to enter the purge box when the electromagnetic pulse valve is opened, blowing downwards onto the filter cloth. This removes material adhering to the filter cloth, ensuring the subsequent filtration effect and guaranteeing discharge efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vacuum belt filter technology, specifically a stable discharge structure for a vacuum belt filter. Background Technology

[0002] The principle of ammonia desulfurization is to use ammonia or ammonia water as an absorbent to chemically react with sulfur dioxide in flue gas, producing ammonium sulfite, which is further oxidized to ammonium sulfate, ultimately converting sulfur into usable ammonium sulfate fertilizer. Ammonia desulfurization produces wet material, which requires a vacuum belt filter to remove the water and obtain dry material. During operation, the vacuum belt filter needs a dedicated discharge device to clean the filtered material from the filter cloth.

[0003] When using existing discharge devices, the material adhering to the filter cloth is not cleaned properly, which affects the subsequent filtration effect of the filter cloth and the discharge efficiency. At the same time, the tightness between the vacuum purging structure and the filter cloth cannot be guaranteed when using existing discharge devices, which affects the purging effect of high-pressure gas on the filter cloth. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a stable discharge structure for a vacuum belt filter. By setting up a purge box, an air inlet pipe and an electromagnetic pulse valve, high-pressure gas enters the purge box when the electromagnetic pulse valve is opened, and blows the filter cloth downwards, so that the material attached to the filter cloth can be blown away, thereby ensuring the subsequent filtration effect of the filter cloth and ensuring the discharge efficiency. This can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stable discharge structure for a vacuum belt filter, comprising a support frame, a drive roller mounted on the support frame, a rubber belt sleeved on the outside of the drive roller, a filter cloth disposed on the outside of the rubber belt, a base frame at one end of the support frame, a scraper hinged to the base frame, a cylinder hinged to the lower side of the scraper, a purge box disposed on the upper side of the filter cloth at the lowest end, an air inlet pipe connected to the upper side of the purge box, an electromagnetic pulse valve mounted on the air inlet pipe, upper pressure rollers symmetrically disposed on the two lower edges of the purge box, lower support rollers equally spaced on the lower side of the upper pressure rollers, bearing seats sleeved at both ends of the lower support rollers, springs connected to the lower side of the bearing seats, and limit grooves formed on the lower edges of the other two purge boxes.

[0006] Furthermore, a vacuum box is installed on the lower side of the rubber belt mentioned above, and an ultrasonic thickness gauge is installed on the upper part of the support frame.

[0007] Furthermore, a cleaning roller is provided on the lower side of the cylinder, and a rotary motor is connected to one end of the cleaning roller.

[0008] Furthermore, a drive motor is provided on the outside of the support frame near the drive roller, and the output end of the drive motor is key-connected to the cleaning roller.

[0009] Furthermore, the drive motor is bolted to the support frame, and the vacuum box is fixedly connected to the support frame.

[0010] Furthermore, the two ends of the cleaning roller are connected to the base frame via bearings, and the air inlet pipe is connected to the electromagnetic pulse valve via a flange.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, through the setting of a purge box, an air inlet pipe and an electromagnetic pulse valve, allows high-pressure gas to enter the purge box when the electromagnetic pulse valve is opened, and blows the filter cloth downwards, so that the material attached to the filter cloth can be blown away, thereby ensuring the subsequent filtration effect of the filter cloth and ensuring the discharge efficiency.

[0013] 2. This utility model, through the setting of a purge box, upper pressure roller, lower support roller, bearing seat, spring and limiting groove, allows the filter cloth to pass through the limiting groove at the bottom of the purge box, and then pass between the upper pressure roller and the lower support roller. The lower support roller is pushed upward under the action of the spring, so that the upper pressure roller and the lower support roller press tightly on the filter cloth, thus ensuring the sealing between the filter cloth and the purge box, thereby ensuring the purging effect of high pressure gas on the filter cloth. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This utility model Figure 1 Schematic diagram of the main cross-sectional structure of the middle purge box;

[0016] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A;

[0017] Figure 4 This utility model Figure 1 Enlarged structural diagram at point B;

[0018] Figure 5 This utility model Figure 2 A side view of the lower support rollers.

[0019] In the diagram: 1. Support frame; 2. Drive motor; 3. Filter cloth; 4. Drive roller; 5. Rubber belt; 6. Vacuum box; 7. Purge box; 8. Air inlet pipe; 9. Discharge scraper; 10. Base frame; 11. Cylinder; 12. Ultrasonic thickness gauge; 13. Upper pressure roller; 14. Lower support roller; 15. Limiting groove; 16. Electromagnetic pulse valve; 17. Cleaning roller; 18. Rotary motor; 19. Bearing seat; 20. Spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This embodiment provides a technical solution: a stable discharge structure for a vacuum belt filter, including a support frame 1, a drive roller 4 mounted on the support frame 1, a rubber belt 5 sleeved on the outside of the drive roller 4, a filter cloth 3 disposed on the outside of the rubber belt 5, a base frame 10 disposed at one end of the support frame 1, a scraper 9 hinged on the base frame 10, a cylinder 11 hinged to the lower side of the scraper 9, a purge box 7 disposed on the upper side of the filter cloth 3 at the bottom, an air inlet pipe 8 connected to the upper side of the purge box 7, an electromagnetic pulse valve 16 mounted on the air inlet pipe 8, upper pressure rollers 13 symmetrically disposed on the two lower edges of the purge box 7, lower support rollers 14 equally spaced on the lower side of the upper pressure rollers 13, bearing seats 19 sleeved at both ends of the lower support rollers 14, springs 20 connected to the lower side of the bearing seats 19, and limit grooves 15 formed on the lower edges of the other two purge boxes 7.

[0022] like Figure 1-5 As shown, the material requiring vacuum filtration is poured onto the filter cloth 3. The rubber belt 5 and the vacuum box 6 under the filter cloth 3 can create a vacuum environment, allowing the liquid in the material to enter the vacuum box 6 under the action of gravity and vacuum air pressure and be collected. The dry material after vacuum filtration moves along the filter cloth 3 to the position of the feeding scraper 9. The feeding scraper 9 can scrape the material off the filter cloth 3 and drop it off. The cylinder 11 can push the feeding scraper 9 to press it against the filter cloth 3, thereby scraping the material off the filter cloth 3 cleanly. When the filter cloth 3 moves to the lower side of the purge box 7, the electromagnetic pulse valve 16 opens frequently, and high-pressure gas enters the purge box 7 through the air inlet pipe 8 to purge and clean the material on the filter cloth 3. The filter cloth 3 enters between the upper pressure roller 13 and the lower support roller 13 along the limiting groove 15. The lower support roller 14 is pushed upward under the action of the spring, thereby making the filter cloth 3 fit tightly with the purge box 7, ensuring the sealing performance, and thus ensuring the purge effect of the filter cloth 3.

[0023] A vacuum box 6 is installed on the lower side of the upper rubber belt 5, and an ultrasonic thickness gauge 12 is installed on the upper part of the support frame 1.

[0024] A cleaning roller 17 is provided on the lower side of the cylinder 11, and a rotary motor 18 is connected to one end of the cleaning roller 17.

[0025] A drive motor 2 is located on the outside of the support frame 1 near the drive roller 4, and the output end of the drive motor 2 is connected to the cleaning roller 17.

[0026] The drive motor 2 is connected to the support frame 1 by bolts, and the vacuum box 6 is fixedly connected to the support frame 1.

[0027] The cleaning roller 17 is connected to the base frame 10 at both ends via bearings, and the air inlet pipe 8 is connected to the electromagnetic pulse valve 16 via flanges.

[0028] The working principle of the stable discharge structure of the vacuum belt filter provided by this utility model is as follows: Figures 1-5 As shown, the material requiring vacuum filtration is poured onto the filter cloth 3. The rubber belt 5 and the vacuum box 6 under the filter cloth 3 can create a vacuum environment, allowing the liquid in the material to enter the vacuum box 6 under the action of gravity and vacuum air pressure and be collected. The dry material after vacuum filtration moves along the filter cloth 3 to the position of the feeding scraper 9. The feeding scraper 9 can scrape the material off the filter cloth 3 and drop it off. The cylinder 11 can push the feeding scraper 9 to press it against the filter cloth 3, thereby scraping the material off the filter cloth 3 cleanly. When the filter cloth 3 moves to the lower side of the purge box 7, the electromagnetic pulse valve 16 opens frequently, and high-pressure gas enters the purge box 7 through the air inlet pipe 8 to purge and clean the material on the filter cloth 3. The filter cloth 3 enters between the upper pressure roller 13 and the lower support roller 13 along the limiting groove 15. The lower support roller 14 is pushed upward under the action of the spring, thereby making the filter cloth 3 fit tightly with the purge box 7, ensuring the sealing performance, and thus ensuring the purge effect of the filter cloth 3.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A vacuum belt filter stable discharge structure comprising a support frame (1), characterized in that: A drive roller (4) is installed on the support frame (1). A rubber belt (5) is sleeved on the outside of the drive roller (4). A filter cloth (3) is set on the outside of the rubber belt (5). A base frame (10) is set at one end of the support frame (1). A scraper (9) is hinged on the base frame (10). A cylinder (11) is hinged on the lower side of the scraper (9). A purge box (7) is set on the upper side of the filter cloth (3) at the bottom. An air inlet pipe (8) is connected to the upper side of the purge box (7). An electromagnetic pulse valve (16) is installed on the air inlet pipe (8). Upper pressure rollers (13) are symmetrically arranged on the two lower edges of the purge box (7). Lower support rollers (14) are evenly spaced on the lower side of the upper pressure rollers (13). Bearing seats (19) are sleeved on both ends of the lower support rollers (14). A spring (20) is connected to the lower side of the bearing seats (19). Limit grooves (15) are opened on the lower edges of the other two purge boxes (7).

2. A stable discharge structure for a vacuum belt filter according to claim 1, characterized in that: A vacuum box (6) is installed on the lower side of the rubber belt (5) and an ultrasonic thickness gauge (12) is installed on the upper part of the support frame (1).

3. A vacuum belt filter stable discharge structure according to claim 2, characterized in that: A cleaning roller (17) is provided on the lower side of the cylinder (11), and a rotary motor (18) is connected to one end of the cleaning roller (17).

4. The stable discharge structure of a vacuum belt filter according to claim 3, characterized in that: A drive motor (2) is provided on the outside of the support frame (1) near the drive roller (4), and the output end of the drive motor (2) is keyed to the cleaning roller (17).

5. The stable discharge structure of a vacuum belt filter according to claim 4, characterized in that: The drive motor (2) is connected to the support frame (1) by bolts, and the vacuum box (6) is fixedly connected to the support frame (1).

6. The stable discharge structure of a vacuum belt filter according to claim 3, characterized in that: The cleaning roller (17) is connected to the base frame (10) at both ends by bearings, and the air inlet pipe (8) is connected to the electromagnetic pulse valve (16) by flanges.

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