Belt type vacuum filter suitable for reducing moisture of carbide slag and having squeezing function

Abstract

The utility model belongs to the technical field of carbide slag treatment, and particularly relates to a belt type vacuum filter with a squeezing function, which is suitable for reducing moisture of carbide slag and comprises a filter body, and the filter body comprises a material distribution area, a vacuum water absorption area and a vacuum pumping area which are sequentially arranged. A vacuum squeezing area is further arranged at the rear end of the vacuum pumping-out area and used for reducing moisture in the materials through vacuum squeezing. Based on the vacuum squeezing device, vacuum squeezing can be carried out on the filter cloth which is subjected to vacuum pumping, and moisture in slag materials can be extracted in cooperation with vacuum negative pressure in the squeezing stage, so that the moisture of the materials is further reduced. In addition, compressed air is not needed to purge the carbide slag slurry in the process.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbide slag treatment, and in particular relates to a belt-type vacuum filter with a pressing function suitable for reducing the moisture content of carbide slag. Background Art

[0002] During the production process of calcium carbide PVC device, calcium carbide produces acetylene gas and slag slurry after hydrolysis reaction in the generator. Acetylene is sent to the downstream synthesis process to react with hydrogen chloride to produce vinyl chloride. The slag slurry is pumped to the concentration tank for precipitation. The slag slurry after precipitation is pumped to the plate and frame filter press. After filtering by the plate and frame filter press, the calcium carbide slag is sent to the downstream cement plant process. The plate and frame filter press has a high failure rate, high maintenance material cost, high maintenance frequency, high frequency of manual operation steps, and a high risk of personal injury. At present, compressed air (0.6-0.8MPa) is needed to purge the plate and frame in the process of reducing moisture. The water vapor in the slag slurry is discharged from the plate and frame drainage trough during the purge process, causing odor in the plant. The summer temperature can reach up to 37-39℃ and the humidity is 70-80%, which is not conducive to long-term operation of personnel and affects the surrounding environment. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a belt type vacuum filter with a pressing function suitable for reducing the moisture content of carbide slag.

[0004] The technical solution provided by the utility model is as follows:

[0005] A belt vacuum filter with a pressing function suitable for reducing the moisture content of carbide slag comprises a filter body, which includes a material distribution area, a vacuum water absorption area and a vacuum drying area arranged in sequence, and a vacuum pressing area is also arranged at the rear end of the vacuum drying area for reducing the moisture content of the material by vacuum pressing.

[0006] Based on the above technical solution, the vacuum-dried filter cloth can be vacuum pressed, and the vacuum negative pressure can be used to extract the moisture in the slag during the pressing stage, thereby further reducing the moisture content of the material. In addition, the process does not require compressed air to purge the carbide slag slurry.

[0007] Specifically, the vacuum pressing area includes:

[0008] frame;

[0009] A first pressing roller and a second pressing roller are arranged on the frame at the same height, a gap is arranged between the first pressing roller and the second pressing roller, and the horizontal width of the gap is smaller than the sum of the thicknesses of the dewatering filter cloth and the pressing filter cloth;

[0010] for redirecting the dewatering filter cloth and the pressing filter cloth to a redirecting roller passing through the gap;

[0011] A first driving roller for driving the dewatering filter cloth to move forward;

[0012] and a second driving roller for driving the pressing filter cloth and the dewatering filter cloth to move synchronously.

[0013] Based on the above technical solution, the material is wrapped by the filter cloth and squeezed through the pressing roller. Part of the water is extracted by the vacuum inside the vacuum roller used for pressing, and the other part of the water naturally flows to the surface of the pressing roller and is then extracted.

[0014] Specifically, after the dewatered filter cloth leaves the driving roller at the end of the vacuum drying area, it passes through the redirecting roller, the gap and the first driving roller in sequence and then returns to the cloth distribution area.

[0015] Specifically, the pressing filter cloth passes through the redirecting roller and the gap in sequence and then returns to the second driving roller.

[0016] Specifically, the first pressing roller and the second pressing roller are arranged at a height higher than a height of a driving roller at the end of the vacuum drying zone.

[0017] Specifically, the redirecting roller is located below the first pressing roller.

[0018] Specifically, the first driving roller is located on a side of the first pressing roller and the redirecting roller away from the second pressing roller, and its height is located between the first pressing roller and the redirecting roller.

[0019] Specifically, the second driving roller is located above the first driving roller, and its height is higher than that of the first pressing roller.

[0020] Specifically, the first pressing roll is a vacuum roll.

[0021] Furthermore, the second pressing roller is fixedly arranged on the telescopic end of the horizontally arranged telescopic cylinder through a mounting frame, and the fixed end of the telescopic cylinder is fixedly arranged on the frame.

[0022] After the utility model is put into use, compressed air purging can be avoided, the moisture content of materials can be significantly reduced, and the working environment of the staff can be improved. In addition, the production capacity can be increased by 3-4 times while reducing the number of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a schematic diagram of the overall structure of a belt vacuum filter with a pressing function suitable for reducing the moisture content of carbide slag.

[0024] Figure 2 It is a partial diagram of the vacuum pressing area of ​​the utility model.

[0025] Figure 3 It is a trend diagram of the dewatering filter cloth in the vacuum pressing area of ​​the utility model.

[0026] Figure 4 It is a trend diagram of the pressing filter cloth in the vacuum pressing area of ​​the utility model.

[0027] Attached Figure 1 , 2 , 3, and 4, the structures represented by each number are listed as follows:

[0028] 1. First pressing roller; 2. Second driving roller; 3. First driving roller; 4. Reversing roller; 5. Second pressing roller; 6. Frame; 7. Telescopic cylinder; 11. Material distribution area; 12. Vacuum water absorption area; 13. Vacuum drying area; 14. Vacuum pressing area. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] It should be noted that when a part or component is considered to be "connected", "located", or "assembled" on another part or component, it may be directly disposed on the other part or component or there may be a central part or component at the same time. The terms "left", "right", "upper", "lower" and similar expressions used herein are for illustrative purposes only.

[0031] In a specific embodiment, Figure 1 As shown, the belt vacuum filter with a pressing function suitable for reducing the moisture content of carbide slag includes a filter body, which includes a cloth area 11, a vacuum water absorption area 12 and a vacuum drying area 13 arranged in sequence, and a vacuum pressing area 14 is also arranged at the rear end of the vacuum drying area 13, which is used to reduce the moisture content in the material by vacuum pressing. Based on this technical solution, the vacuum-dried filter cloth can be vacuum pressed, and the vacuum negative pressure can be used to extract the moisture in the slag during the pressing stage, thereby further reducing the moisture content of the material.

[0032] Example 1

[0033] Based on the above specific implementation methods, Figure 2As shown, the vacuum pressing area 14 includes: a frame 6; a first pressing roller 1 and a second pressing roller 5 arranged on the frame 6 at the same height, a gap is arranged between the first pressing roller 1 and the second pressing roller 5, and its horizontal width is less than the sum of the thicknesses of the dewatering filter cloth and the pressing filter cloth; a redirecting roller 4 for redirecting the dewatering filter cloth and the pressing filter cloth to pass through the gap; a first driving roller 3 for driving the dewatering filter cloth to move forward; and a second driving roller 2 for driving the pressing filter cloth and the dewatering filter cloth to move synchronously. The first pressing roller 1 is a vacuum roller. Based on this technical solution, the material is wrapped by the filter cloth and squeezed through the pressing roller, a part of the water is sucked away by the vacuum inside the vacuum roller for pressing, and the other part of the water naturally flows to the surface of the pressing roller and is then sucked away.

[0034] Example 2

[0035] On the basis of Example 1, Figure 2 , the height of the first press roller 1 and the second press roller 5 is higher than the height of the driving roller at the end of the vacuum drying zone 13. The redirecting roller 4 is located below the first press roller 1. The first driving roller 3 is located on the side of the first press roller 1 and the redirecting roller 4 away from the second press roller 5, and its height is located between the first press roller 1 and the redirecting roller 4. The second driving roller 2 is located above the first driving roller 3, and its height is higher than the height of the first press roller 1. In addition, other guide or tensioning rollers can be conventionally set as needed.

[0036] Example 3

[0037] On the basis of Example 1, Figure 3 , 4 As shown, after the dewatered filter cloth leaves the driving roller at the end of the vacuum drying area 13, it successively passes through the redirecting roller 4, the gap and the first driving roller 3 and returns to the cloth area 11. The pressed filter cloth successively passes through the redirecting roller 4 and the gap and returns to the second driving roller 2.

[0038] Example 4

[0039] On the basis of Example 1, Figure 2 As shown, the second pressing roller 5 is fixedly arranged on the telescopic end of the horizontally arranged telescopic cylinder 7 through a mounting frame, and the fixed end of the telescopic cylinder 7 is fixedly arranged on the frame 6.

[0040] The working principle of the belt vacuum filter with a squeezing function suitable for reducing the moisture content of carbide slag provided by the utility model is as follows:

[0041] The dewatering filter cloth wrapped with the material is processed in the vacuum water absorption area 12 and the vacuum drying area 13 and then arrives at the vacuum pressing area 14. After leaving the driving roller at the end of the vacuum drying area 13, it goes around the redirecting roller 4, the gap and the first driving roller 3 in sequence and returns to the cloth area 11. At the same time, a pressing filter cloth is arranged in the vacuum pressing area 14, which goes around the redirecting roller 4 and the gap in sequence and returns to the second driving roller 2. The dewatering filter cloth and the pressing filter cloth pass through the gap and are squeezed, thereby being deeply dehydrated. Part of the water is sucked away by the vacuum inside the vacuum roller for pressing, and the other part of the water naturally flows to the surface of the pressing roller and is then sucked away.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A belt vacuum filter with a squeezing function suitable for reducing the moisture content of carbide slag, comprising a filter body, which includes a material distribution area (11), a vacuum water absorption area (12) and a vacuum drying area (13) arranged in sequence, characterized in that: A vacuum pressing area (14) is also provided at the rear end of the vacuum drying area (13) for reducing the moisture in the material through vacuum pressing.

2. The belt vacuum filter with a squeezing function suitable for reducing the moisture content of carbide slag according to claim 1, characterized in that: The vacuum pressing zone (14) comprises: Rack (6); A first pressing roller (1) and a second pressing roller (5) are arranged on the frame (6) at the same height, and a gap is provided between the first pressing roller (1) and the second pressing roller (5), and the horizontal width of the gap is smaller than the sum of the thicknesses of the dewatering filter cloth and the pressing filter cloth; A redirecting roller (4) for redirecting the dewatering filter cloth and the pressing filter cloth to pass through the gap; A first driving roller (3) for driving the dewatering filter cloth to move forward; and a second driving roller (2) for driving the pressing filter cloth to move forward.

3. The belt vacuum filter with a squeezing function suitable for reducing the moisture content of carbide slag according to claim 2, characterized in that: After the dewatered filter cloth leaves the driving roller at the end of the vacuum drying area (13), it passes through the redirecting roller (4), the gap and the first driving roller (3) in sequence and then returns to the cloth distribution area (11).

4. The belt vacuum filter with a squeezing function suitable for reducing the moisture content of carbide slag according to claim 2, characterized in that: The press filter cloth passes through the redirecting roller (4) and the gap in sequence and then returns to the second driving roller (2).

5. The belt vacuum filter with a squeezing function suitable for reducing the moisture content of carbide slag according to claim 2, characterized in that: The heights at which the first pressing roller (1) and the second pressing roller (5) are arranged are higher than the height of the driving roller at the end of the vacuum drying zone (13).

6. The belt vacuum filter with a squeezing function suitable for reducing the moisture content of carbide slag according to claim 5, characterized in that: The redirecting roller (4) is located below the first pressing roller (1).

7. The belt vacuum filter with a squeezing function suitable for reducing the moisture content of carbide slag according to claim 6, characterized in that: The first driving roller (3) is located on the side of the first pressing roller (1) and the redirecting roller (4) away from the second pressing roller (5), and its height is located between the first pressing roller (1) and the redirecting roller (4).

8. The belt vacuum filter with a squeezing function suitable for reducing the moisture content of carbide slag according to claim 7, characterized in that: The second driving roller (2) is located above the first driving roller (3), and its height is higher than that of the first pressing roller (1).

9. The belt vacuum filter with a squeezing function suitable for reducing the moisture content of carbide slag according to claim 2, characterized in that: The first pressing roll (1) is a vacuum roll.

10. The belt vacuum filter with a squeezing function suitable for reducing the moisture content of carbide slag according to claim 2, characterized in that: The second pressing roller (5) is fixedly arranged on the telescopic end of a horizontally arranged telescopic cylinder (7) via a mounting frame, and the fixed end of the telescopic cylinder (7) is fixedly arranged on the frame (6).

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