Arc-shaped cloth expanding device of vacuum belt filter and vacuum belt filter

Abstract

The utility model provides an arc-shaped cloth expanding device of a vacuum belt filter and the vacuum belt filter, and the arc-shaped cloth expanding device of the vacuum belt filter comprises an arc-shaped cloth expanding device main body and a bearing seat, the arc-shaped cloth expanding device main body comprises an arc-shaped cylinder body and a rubber coating layer; the arc-shaped barrel is a spindle-shaped barrel with the middle diameter larger than the diameters of the two ends, and the surface of the arc-shaped barrel is arc-shaped and provided with the rubber coating layer. The two bearing seats are symmetrically arranged, and the arc-shaped cloth expanding device body is rotationally connected between the bearing seats through a rotating shaft. According to the arc-shaped cloth expanding device of the vacuum belt filter, the problem that the filter cloth is wrinkled in the later operation period can be solved, and guarantee is provided for long-period stable operation of a system.

Description

Technical Field

[0001] The present application relates to the field of coal gasification slag water, and in particular to an arc spreading device of a vacuum belt filter and a vacuum belt filter. Background Art

[0002] Texaco's water-coal slurry gasification technology is one of the most successful coal gasification technologies currently used in China. However, there are still problems in the coal gasification slag water system, such as a large amount of fine slag that cannot be normally transported out. However, the filter is the key equipment for the transportation of fine slag. The black water discharged from the gasifier is cooled by the flash evaporation system, and then sent to the sedimentation tank after concentration. The slurry settled in the sedimentation tank is scraped into the bottom by the sedimentation tank rake machine and sent to the vacuum belt filter by the sedimentation tank underflow pump. The slurry is evenly distributed on the filter cloth. Under the suction and filtration of the vacuum pump, the filtrate is sent to the filtrate tank and the fine slag is transported out.

[0003] During the production process, the service life of the filter cloth determines the continuous and stable operation cycle of the vacuum belt filter. The filter cloth is prone to wrinkles and shrinkage in the later stage of use. After wrinkles and shrinkage, the filter cloth is not wide enough, resulting in overflow of slurry on the upper part of the filter and high humidity in the filter cake, which seriously affects the long-term stable operation of the system.

[0004] At present, for the above technical problems, the existing technology aims at the problem that the filter cloth is easy to deviate. The filter cloth induction correction device is improved, and a filter cloth deviation jump machine interlock is added, which can well solve the problem of folding after the filter cloth deviates. However, in the middle stage of the filter cloth operation, wrinkles will still appear in the middle position of the filter cloth, causing the filter cloth width to narrow, and the slurry overflows from the edge of the filter cloth, resulting in difficulty in conveying fine slag, which seriously affects the long-term stable operation of the entire system.

[0005] As for the problem of rubber filter belt deviation, the filter cloth will also deviate after the rubber filter belt deviates. The main solution is to adjust the positioning rollers and the tightness of both sides of the belt in time. If the position of the driven wheel changes, tighten the driven wheel screw in the direction of deviation. However, this method cannot solve the problem of wrinkles on the filter cloth. Utility Model Content

[0006] In response to the above problems, the present application provides an arc-shaped cloth expansion device for a vacuum belt filter and a vacuum belt filter, which can solve the problem of wrinkles appearing in the filter cloth in the later stage of operation and provide a guarantee for the long-term stable operation of the system.

[0007] To achieve the purpose of this application, this application provides the following technical solutions:

[0008] In a first aspect, the present application provides an arc-shaped spreading device for a vacuum belt filter, comprising: an arc-shaped spreading device body, a bearing seat;

[0009] The arc-shaped spreading device body comprises: an arc-shaped cylinder and a rubber coating; the arc-shaped cylinder is a spindle-shaped cylinder with a middle diameter larger than the diameters at both ends, and the surface is arc-shaped and has the rubber coating;

[0010] The two bearing seats are symmetrically arranged, and the arc spreading device body is rotatably connected between the bearing seats via a rotating shaft.

[0011] In a possible implementation, the arc-shaped cylinder is a metal cylinder.

[0012] In a possible implementation, diameters at both ends of the arc-shaped cylinder are the same.

[0013] In a second aspect, the present application further provides a vacuum belt filter, comprising: a motor fixedly arranged on a frame of the vacuum belt filter, a driving roller, a driven roller, a flat roller, a filter cloth and the arc-shaped cloth-expanding device of the vacuum belt filter;

[0014] The output end of the motor is fixedly connected to the input end of the active roller;

[0015] The driving roller is connected to the driven roller via a transmission belt.

[0016] The plane roller is arranged on the side and below the outer sides of the driving roller and the driven roller, and is used to support the filter cloth;

[0017] The arc spreading device of the vacuum belt filter is fixedly arranged on the side of the outer sides of the driving roller and the driven roller through a bearing seat;

[0018] The filter cloth is tightly fitted with the planar roller, the transmission belt and the arc-shaped spreading device of the vacuum belt filter, and is moved by the transmission belt.

[0019] In a possible implementation, the top surface of the arc spreading device body of the arc spreading device of the vacuum belt filter is higher than the top surface of the transmission belt.

[0020] In a possible implementation, a first plane roller is disposed on the side of the outer side of the driven roller, and the arc spreading device of the vacuum belt filter is fixedly disposed between the first plane roller and the driven roller.

[0021] In a possible implementation, the height of the top surface of the first planar roller is lower than the top surface of the arc-shaped spreading device body.

[0022] In a possible implementation, a filtrate box is fixedly disposed on the frame of the vacuum belt filter between the driving roller and the driven roller.

[0023] In a possible implementation, the motor is fixedly connected to the input end of the active roller via a speed reducer.

[0024] The arc expansion device and vacuum belt filter provided by the present application can expand the filter cloth naturally in the horizontal direction under the action of tension, thereby ensuring that the filter cloth can run smoothly and no longer wrinkles, completely solving the problems of filter cloth wrinkles, shrinkage and narrowing, identifying the root cause of the short service life of the filter cloth, and solving the environmental problem of fine residue being difficult to transport out; ensuring the long-term stable operation of the system, improving production efficiency, while reducing the workload of daily maintenance and the cost of frequent filter cloth replacement, eliminating environmental problems such as poor working environment of the filter machine plant, and truly achieving the purpose of cleaning, environmental protection, energy saving and efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application.

[0026] Figure 1 A schematic structural diagram of an arc spreading device for a vacuum belt filter provided in an embodiment of the present application;

[0027] Figure 2 A schematic structural diagram of a vacuum belt filter provided in an embodiment of the present application.

[0028] Figure numerals: 1-arc spreading device body, 11-arc cylinder, 12-rubber coating; 2-bearing seat; 3-rotating shaft; 4-filter cloth; 21-arc spreading device of vacuum belt filter; 22-motor; 23-driving roller; 24-driven roller; 25-filtrate box; 26-flat roller; 27-reducer; 28-transmission belt. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of this application, unless otherwise specified, "plurality" means two or more.

[0031] Example 1

[0032] Figure 1 An arc spreading device for a vacuum belt filter provided in an embodiment of the present application comprises: an arc spreading device body 1, a bearing seat 2;

[0033] The arc-shaped spreading device body 1 comprises: an arc-shaped cylinder 11 and a rubber coating 12; the arc-shaped cylinder 11 is a spindle-shaped cylinder with a diameter in the middle greater than that at both ends, and has an arc-shaped surface and the rubber coating 12;

[0034] The two bearing seats 2 are symmetrically arranged, and the arc spreading device body 1 is rotatably connected between the bearing seats 2 via a rotating shaft 3 .

[0035] In a possible implementation manner, the arc-shaped cylinder 11 is a metal cylinder. Adopting this implementation manner can increase the service life of the arc-shaped spreading device of the vacuum belt filter.

[0036] In a possible implementation manner, the diameters of both ends of the arc-shaped cylinder 11 are the same. This implementation manner allows the filter cloth 4 to be evenly spread out, thereby reducing the occurrence of deviation.

[0037] Example 2

[0038] Figure 2 A vacuum belt filter provided in the embodiment of the present application comprises: a motor 22 fixedly arranged on a frame of the vacuum belt filter, a driving roller 23, a driven roller 24, a flat roller 26, a filter cloth 4 and the above-mentioned arc-shaped spreading device 21 of the vacuum belt filter;

[0039] The output end of the motor 22 is fixedly connected to the input end of the active roller 23;

[0040] The driving roller 23 is connected to the driven roller 24 via a transmission belt 28;

[0041] The flat roller 26 is disposed on the side and below the outer sides of the driving roller 23 and the driven roller 24 to support the filter cloth 4;

[0042] The arc spreading device 21 of the vacuum belt filter is fixedly arranged on the side of the outer side of the driving roller 23 and the driven roller 24 through the bearing seat 2;

[0043] The filter cloth 4 is tightly fitted with the flat roller 26 , the transmission belt 28 and the arc-shaped spreading device 21 of the vacuum belt filter, and is driven by the transmission belt 28 .

[0044] Optionally, the upper surface of the transmission belt 28 has an anti-slip pattern.

[0045] Optionally, there are multiple planar rollers 26 for supporting and guiding the filter cloth 4 , and some planar rollers 26 are staggered up and down so that the filter cloth forms a fold line structure therein, thereby improving the support force for the filter cloth 4 .

[0046] In a possible implementation, the top surface of the arc spreading device body 1 of the arc spreading device 21 of the vacuum belt filter is higher than the top surface of the transmission belt 28. This implementation can increase the tension of the unfolded filter cloth 4 and make the filter cloth unfold more thoroughly.

[0047] In a possible implementation, a first flat roller 29 is disposed on the side of the outer side of the driven roller 24, and the arc-shaped spreading device 21 of the vacuum belt filter is fixedly disposed between the first flat roller 29 and the driven roller 24. This implementation can facilitate the unfolding of the filter cloth 4.

[0048] In a possible implementation, the height of the top surface of the first planar roller 29 is lower than the top surface of the arc-shaped cloth spreading device body 1. This implementation can increase the tension of the unfolded filter cloth 4, so that the filter cloth can be unfolded more thoroughly.

[0049] In a possible implementation manner, a filtrate box 25 is fixedly provided on the frame of the vacuum belt filter between the driving roller 23 and the driven roller 24 for receiving the filtrate.

[0050] In a possible implementation manner, the motor 22 is fixedly connected to the input end of the active roller 23 via a reducer 27. This implementation manner can reduce the speed of the motor output and increase the torque by adjusting the reducer.

[0051] Working principle:

[0052] The driving roller 23 is driven to rotate by starting the motor 22, and the driving roller 23 drives the driven roller 24 to rotate through the transmission belt 28 and drives the filter cloth 4 in contact with the surface of the transmission belt 28 to move. The filter cloth is close to the flat roller 26, and the flat roller 26 provides guidance and support. During operation, the vacuum belt filter arc spreading device 21 continuously and efficiently spreads the filter cloth laterally during the operation of the filter cloth. The rotation of the bearing in the bearing seat drives the metal cylinder of the entire vacuum belt filter arc spreading device 21 to rotate at a uniform speed. The filter cloth 4 runs smoothly along the upper part of the rubber layer 12, and the filter cloth is continuously expanded.

[0053] In the several embodiments provided in the present application, it should be understood that the disclosed systems, modules and methods can be implemented in other ways. For example, the module embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, modules or units, which can be electrical, mechanical or other forms.

[0054] The above embodiments are only used to illustrate the technical solution of the present application, but not to limit it. The present application is not limited to the exact structure described above and illustrated in the accompanying drawings, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, various changes and modifications made without departing from the concept of the present application should be deemed to belong to the protection scope of the present application.

Claims

1. A vacuum belt filter arc spreading device, characterized in that: include: Arc-shaped spreading device main body (1) and bearing seat (2); The arc-shaped spreading device body (1) comprises: an arc-shaped cylinder (11) and a rubber coating (12); the arc-shaped cylinder (11) is a spindle-shaped cylinder with a diameter in the middle greater than diameters at both ends, and has an arc-shaped surface and the rubber coating (12); The two bearing seats (2) are symmetrically arranged, and the arc-shaped spreading device body (1) is rotatably connected between the bearing seats (2) via a rotating shaft (3).

2. The arc spreading device of the vacuum belt filter according to claim 1, characterized in that: The arc-shaped cylinder (11) is a metal cylinder.

3. The arc spreading device of the vacuum belt filter according to claim 1, characterized in that: The diameters of the two ends of the arc-shaped cylinder (11) are the same.

4. A vacuum belt filter, characterized in that: include: A motor (22), a driving roller (23), a driven roller (24), a flat roller (26), a filter cloth (4) and an arc-shaped spreading device (21) for a vacuum belt filter fixedly arranged on a frame of the vacuum belt filter; The output end of the motor (22) is fixedly connected to the input end of the active roller (23); The driving roller (23) and the driven roller (24) are connected to each other by a transmission belt (28); The flat roller (26) is arranged on the side and below the outer sides of the driving roller (23) and the driven roller (24) and is used to support the filter cloth (4); The arc-shaped spreading device (21) of the vacuum belt filter is fixedly arranged on the side of the outer sides of the driving roller (23) and the driven roller (24) through a bearing seat (2); The filter cloth (4) is tightly fitted with the flat roller (26), the transmission belt (28) and the arc-shaped spreading device (21) of the vacuum belt filter, and is moved by the transmission belt (28).

5. The vacuum belt filter according to claim 4, characterized in that: The top surface of the arc spreading device body (1) of the arc spreading device (21) of the vacuum belt filter is higher than the top surface of the transmission belt (28).

6. The vacuum belt filter according to claim 5, characterized in that: A first plane roller (29) is arranged on the side of the outer side of the driven roller (24), and the arc spreading device (21) of the vacuum belt filter is fixedly arranged between the first plane roller (29) and the driven roller (24).

7. The vacuum belt filter according to claim 6, characterized in that: The height of the top surface of the first planar roller (29) is lower than the top surface of the arc-shaped spreading device body (1).

8. The vacuum belt filter according to claim 4, characterized in that: A filtrate box (25) is also fixedly arranged on the frame of the vacuum belt filter between the driving roller (23) and the driven roller (24).

9. The vacuum belt filter according to claim 4, characterized in that: The motor (22) is fixedly connected to the input end of the active roller (23) via a speed reducer (27).

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