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Belt pressure filter capable of realizing segmented adjustment of tension

A belt-type filter press and segmental adjustment technology, which is applied in the direction of filtration separation, membrane filter, separation method, etc., can solve problems such as running side leakage, restriction of pressing effect, difficulty in feeding, etc., and achieve precise segmental tension adjustment Effect

Active Publication Date: 2017-11-24
嘉兴绿方舟环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main problem of this equipment is: for materials with poor water filterability, such as municipal sludge, when the squeeze roller is pressed tightly, the filter medium such as the mesh belt is difficult to withstand excessive force and bulges, so it can only Reduce the pressing pressure operation, which restricts the exertion of the pressing effect
[0003] 1. The pressing force on the material mainly comes from the tension of the metal mesh belt. Since the tension of each point of the metal mesh belt is the same, the pressing force on the material in the entire nip area is also the same. The material is subjected to the same force at the entrance and exit. The pressing force is the same. For materials that are difficult to dewater, such as municipal sludge, there will be side leakage or feeding difficulties during operation.
If the technology described in this patent is used, the solution can only be to use multiple pressing combinations, step by step step-up, which brings problems such as huge equipment, high cost, and large power consumption.
[0004] 2. The pressing force comes from the tension of the metal mesh belt, so it is impossible to obtain a pressing force that exceeds what the tension of the metal belt can provide
As a reference, the commercially available box-type membrane filter press can generally achieve a pressing pressure of 1.6MPA. Therefore, the insufficient pressing pressure of this equipment is an obvious problem.

Method used

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  • Belt pressure filter capable of realizing segmented adjustment of tension
  • Belt pressure filter capable of realizing segmented adjustment of tension
  • Belt pressure filter capable of realizing segmented adjustment of tension

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to figure 1 , the present invention is a belt filter press that can adjust the tension in sections. During the working process, the material to be treated enters the filter press from the material feed port 1, and the material passes through the spreading distribution roller 3 and the feeding thickness adjustment roller in turn. 4. The roller shaft of the spread distribution roller 3 is equipped with spiral blades, the spread distribution roller 3 can disperse the material to both sides, the roller shaft of the feed thickness adjustment roller 4 is equipped with plate blades, and the feed thickness adjustment roller 4 scrapes the material Flat, and prevent excess material from entering the filter press, the material to be dehydrated is clamped between the pressure filter belt 2 and the pressure belt 18, the pressure belt 18 is impermeable to liquid, and the pressure belt 18 is in the pressure filter belt 2, the pressure belt 18 provides sufficient pressing tension...

Embodiment 2

[0031] refer to figure 2, a belt filter press that can adjust the tension in sections of the present invention. During the working process, for the horn-shaped progressively pressurized dehydration zone, when the self-tensile strength and elongation of the dehydration mesh belt cannot meet the high-pressure dehydration requirements An annular belt with high tensile strength and small deformation can be wrapped around the dewatering roller outside the nip filter screen equipped with counter-pressure damping rollers as a segmental damping pressurization belt 26 for liquid penetration. Different from existing tension belts such as “single filter belt filter press” compared with patent application No. 201510316975.X, the segmented damping pressure belt 26 for liquid penetration can flexibly adjust the tension in segments according to needs, so that the material The dehydration power configuration at the feed and discharge parts is more reasonable, avoiding the difficulty of feedi...

Embodiment 3

[0033] refer to image 3 , a belt filter press that can adjust the tension in sections of the present invention. During the working process, when processing materials with strong corrosion or wear, a section that is impermeable to liquid can be superimposed on the outside of the filter belt. Damping pressurized belt 261. The liquid impermeable segmented damping press belt 261 is able to withstand greater braking forces than the press belt, thereby providing additional press tension. The filtrate flowing out from the filter belt is led out from the grooves on the surface of the horn segmented press grooved roller 231; because it is impermeable to liquid, it is always kept dry during operation, which is beneficial to prevent slipping, and can also be added in the segmental damping that is impermeable to liquid The surface of the pressure belt 261 in contact with the damping component is sprayed with anti-slip agent to increase friction. The segmental damping and pressurizing b...

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Abstract

The invention discloses a belt pressure filter capable of realizing segmented adjustment of tension. The belt pressure filter comprises a pressure filter mesh belt, a cloth spreading roller, a feeding thickness adjusting roller, mesh belt tension pressure filter rollers, groove texture pressure filter rollers, a negative-pressure damping box, a pressurizing belt damping roller, a mesh belt damping roller, a groove texture damping pressure filter roller, a driving roller, a mesh belt discharging roller, an upper unloading scraper, a lower unloading scraper, a net guiding roller, a mesh belt flushing pipe, a mesh belt correcting roller, a mesh belt tensioning roller, a pressurizing belt tensioning roller, a pressurizing belt correcting roller, a pressurizing belt, a filtrate receiving tray, a cleaning solution receiving tray, a filter cake outlet, an overlapped net damping roller, a horn segmented pressing roller, a horn segmented pressing groove texture roller, a damping oppositely-pressing roller, an oppositely-pressing roller, a segmented damping and pressurizing belt, an overlapped belt correcting roller and an overlapped belt tensioning roller. According to the belt pressure filter disclosed by the invention, the pressing intensity can be flexibly controlled by a damping component; meanwhile, the filter belt can be tensioned in a tension dehydration area by segmented adjustment of the tension, so that effective dehydration power is formed, and the defect that the filtering belt is gradually elongated due to yield creep is avoided.

Description

【Technical field】 [0001] The invention relates to a solid-liquid separation device, in particular to the technical field of a belt filter press capable of adjusting tension in sections. 【Background technique】 [0002] Belt filter press is a solid-liquid separation device widely used in sludge dewatering, slag dewatering, pulp forming and other fields. The basic process is that the material is clamped by two filter screens and moves in a serpentine shape along the dewatering roller, and the liquid in the material is squeezed out with the help of the tension of the filter screen. During the operation of the ring net of the belt filter press, the tension on each part of the net belt is the same, and it is impossible to flexibly adjust the pressing pressure of a specific filter roll, and there is a common problem of side effects. Leakage and low solid content of filter cake, for example, the solid content of municipal sludge is only about 20%. As an improvement, Patent Applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D33/04B01D33/82
CPCB01D33/042B01D33/82B01D2201/202
Inventor 朱忆人潘政尧
Owner 嘉兴绿方舟环保技术有限公司