Anti-stick filter bucket and filter disc device

Abstract

The present invention relates to an anti-stick filter bucket and filter disc device, including a sealing strip pressing mechanism, a metal filter bucket, a non-metal anti-stick filter bucket, a filter screen, a grille, a positioning rod, a small sleeve, and a large sleeve; it also includes a sealing strip pressing device and a sealing strip. The sealing strip pressing mechanism is located at the intersection of the metal filter bucket and the non-metal anti-stick filter bucket above, the non-metal anti-stick filter bucket is attached to the metal filter bucket, the filter screen covers the grille, and a plurality of positioning rods are installed below the grille in a fixed connection manner. The small sleeve is sleeved on the positioning rod, and the large sleeve is sleeved on the inner surface of the lower pipe of the filter bucket. Compared with the prior art, this enhances the adaptability of the filtering equipment when filtering certain high-viscosity and easy-to-scale media, thereby greatly extending the cleaning cycle of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of anti-sticking on the surface of a filter bucket, in particular to an anti-sticking filter bucket and a filter disc device. Background Art

[0002] The filter chambers of many filtration equipment, such as flat disc filters, flip disc filters, rubber belt filters, etc., are designed to be in the shape of filter buckets, which are mainly used to collect filtrate. Due to factors such as mechanical strength and manufacturing difficulty, filter buckets, especially large-sized filter buckets, are made of metal materials.

[0003] Since the surface energy of untreated metal materials is relatively high, when encountering certain high-viscosity and easy-to-scale working conditions, the material is easy to form adhesion on the surface of the filter bucket. As time goes by, the cavity inside the filter bucket will become smaller and smaller, thereby reducing the flow flux of the filtrate, and the use effect of the filter will become worse and worse.

[0004] At present, there are several conventional solutions: 1. Polishing the metal surface, but the anti-sticking effect is not ideal due to the presence of microscopic pores on the surface. 2. Spraying various anti-stick coatings such as F30, nano-hydrophobic materials, etc., but the thickness of such coatings is often less than 0.1mm, and the coatings are easily washed away by solid particles in the filtrate and lose their anti-sticking effect. 3. Surface thermal spraying of plastic materials such as PVC, etc., but ordinary plastics have poor heat resistance and cannot be used in certain high-temperature occasions. Summary of the invention

[0005] The object of the present invention is to provide an anti-sticking filter bucket and filter disc device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-stick filter bucket and filter disc device, comprising: a sealing strip pressing mechanism, a metal filter bucket, a non-metal anti-stick filter bucket, a filter screen, a grille, a positioning rod, a small sleeve, and a large sleeve; and also comprising: a sealing strip pressing device and a sealing strip. The sealing strip pressing mechanism is at the junction of the metal filter bucket and the non-metal anti-stick filter bucket, the sealing strip is pressed at the port of the non-metal anti-stick filter bucket, the sealing strip pressing device presses the sealing strip by a fixed connection, the non-metal anti-stick filter bucket is attached to the metal filter bucket, the filter screen is above the grille, and a plurality of positioning rods are installed below the grille, the small sleeve is sleeved on the positioning rod, and the large sleeve is sleeved on the inner surface of the lower pipe of the filter bucket.

[0007] Wherein, the sealing strip pressing device can press the sealing strip by a fixed connection method, including bolts and spot welding.

[0008] The sealing strip pressing mechanism presses the non-metallic anti-sticking filter bucket, so that the filtrate does not directly contact the bottom of the metal filter bucket.

[0009] The sealing strip prevents the slurry from directly contacting the bottom of the metal filter as much as possible.

[0010] Among them, the structural forms of the sealing strip pressing mechanism include a wedge block pressing method, a top pressure pressing method, an embedded round bar pressing method, and a spring leaf pressing method.

[0011] Wherein, the sealing strip material may include acid-resistant rubber and expansion F4.

[0012] Among them, the non-metallic anti-sticking filter can reduce the surface energy of the inner surface of the metal filter base, and can achieve a better anti-sticking purpose.

[0013] Wherein, the non-metallic anti-sticking filter can be prefabricated from a material with a slightly lower surface energy.

[0014] Among them, the materials with slightly lower surface energy include acid-resistant rubber, PTFE, PVDF, and anti-stick ceramics.

[0015] The sealing strip and the sealing strip pressing device are pre-tightened to prevent the filtrate from leaking from the joint surface of the two materials of the filter bucket to the surface of the metal filter bucket to cause adhesion, accumulation and lifting.

[0016] Among them, several positioning rods and small sleeves are installed under the grid to strengthen the non-metallic filter bucket to overcome the shortcomings of low mechanical strength and easy deformation of the non-metallic filter bucket, so as to maintain a seal between the metal filter bucket and the non-metallic anti-sticking filter bucket.

[0017] Wherein, the head of the positioning rod is provided with an elastic ring.

[0018] Wherein, the positioning rod can be connected to the grille by a fixed connection method, including spot welding, locking buckle, and hook.

[0019] Wherein, the small sleeve can be made of a material with a slightly lower surface energy, including acid-resistant rubber, PTFE, and PVDF, so as to reduce the adhesion phenomenon on the surface of the positioning rod.

[0020] Wherein, the large sleeve is sleeved on the inner surface of the lower connecting pipe of the filter bucket.

[0021] The large sleeve may be made of a material with a slightly lower surface energy, including acid-resistant rubber, PTFE, and PVDF, so as to reduce the phenomenon of adhesion on the inner surface of the lower pipe of the filter bucket.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The non-metallic anti-stick filter bucket adopted in the technical solution provided by the present invention can effectively reduce the surface energy of the metal filter bucket, achieve a more ideal anti-sticking purpose, and thus extend the cleaning cycle of the filter bucket.

[0024] 2. The technical solution provided by the present invention adopts a non-metallic anti-sticking filter bucket prefabricated with low surface energy materials such as acid-resistant rubber, PTFE, PVDF, etc., which has a certain thickness. This process is more reliable than the spraying anti-sticking non-metallic coating process and is more resistant to the flushing of solid particles in the filtrate.

[0025] 3. The technical solution provided by the present invention adopts non-metallic anti-sticking filter bucket prefabricated with low surface energy materials such as acid-resistant rubber, PTFE, PVDF, etc. This process is more temperature-resistant than the spray plastic process, and is less prone to blistering, thermal deformation and warping, and can maintain the anti-sticking effect for a long time.

[0026] 4. The technical solution provided by the present invention adopts a non-metallic anti-stick filter bucket prefabricated with low surface energy materials such as acid-resistant rubber, PTFE, PVDF, etc. When the sealing strip is used to press, the material and the metal filter bucket are relatively isolated, thereby reducing the direct corrosion and abrasion of the metal filter bucket surface to a certain extent. The design thickness of the metal filter bucket can be appropriately thinned, and the service life of the metal filter bucket is also extended.

[0027] 5. The technical solution provided by the present invention designs the non-metallic anti-sticking filter bucket as an assembled structure. The filter bucket can be replaced at any time after being worn out after a period of use, and the sealing strip compression structure design also makes disassembly and assembly very easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a diagram of the overall filter bucket device of the present invention;

[0029] Figure 2 This is a diagram of the sealing strip pressing mechanism of the present invention;

[0030] Figure 3 A diagram showing the compression method of the wedge-shaped block of the sealing strip compression mechanism of the present invention;

[0031] Figure 4 This is a top-pressure clamping diagram of the sealing strip clamping mechanism of the present invention;

[0032] Figure 5 This is a diagram of the embedded round bar pressing method of the sealing strip pressing mechanism of the present invention;

[0033] Figure 6 This is a diagram of the spring-type pressing mode of the sealing strip pressing mechanism of the present invention;

[0034] Figure 1-2 Middle: 1-sealing strip pressing mechanism; 2-metal filter bucket; 3-non-metal anti-sticking filter bucket; 4-filter screen; 5-grid; 6-positioning rod; 7-small sleeve; 8-large sleeve; 11-sealing strip pressing device; 12-sealing strip. DETAILED DESCRIPTION

[0035] In order to more thoroughly understand the features and technical contents of the present invention, the implementation of the present invention is described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and explanation, and are not used to limit the present invention.

[0036] Reference Figure 1 An anti-sticking filter bucket and filter disc device, comprising: a sealing strip pressing mechanism 1, a metal filter bucket 2, a non-metallic anti-sticking filter bucket 3, a filter screen 4, a grille 5, a positioning rod 6, a small sleeve 7, and a large sleeve 8; also comprising: a sealing strip pressing device 11 and a sealing strip 12; the sealing strip pressing mechanism 1 is at the junction of the metal filter bucket 2 and the non-metallic anti-sticking filter bucket 3, the sealing strip 12 is pressed on the port of the non-metallic anti-sticking filter bucket 3, the sealing strip pressing device 11 presses the sealing strip 12 by a fixed connection, the non-metallic anti-sticking filter bucket 3 is attached to the metal filter bucket 2, the filter screen 4 is above the grille 5, and a plurality of positioning rods 6 are installed below the grille 5, the small sleeve 7 is sleeved on the positioning rod 6, and the large sleeve 8 is sleeved on the inner surface of the pipe at the lower part of the filter bucket.

[0037] The filtrate is filtered through the filter screen 4 and the grid 5 into the filter funnel, along the non-metallic anti-sticking filter funnel 3, and flows to the middle large sleeve 8 by gravity.

[0038] The sealing strip pressing mechanism 1 is a sealing strip pressing device which is used to press the sealing strip 12 while preventing the filtrate from directly contacting the bottom of the metal filter bucket.

[0039] The sealing strip pressing device 11 can press the sealing strip 12 by a fixed connection method, including bolts and spot welding.

[0040] Among them, the edge of the non-metallic anti-sticking filter 3 is designed with a sealing strip 12 and pre-tightened with a sealing strip pressing device 11 to prevent the filtrate from leaking from the joint surface of the two materials of the filter hopper to the surface of the metal filter hopper 2 to cause adhesion, accumulation and lifting.

[0041] The sealing strip pressing device 11 may have a variety of different structural types, including a wedge-shaped block pressing method, a top-pressure pressing method, an embedded round bar pressing method, and a spring-type pressing method.

[0042] The material of the sealing strip 12 may include acid-resistant rubber and expansion F4.

[0043] Among them, a number of positioning rods 6 are installed under the grille 5 and are covered with a small sleeve 7 to strengthen the non-metallic anti-sticking filter bucket 3 to a certain extent, overcome the shortcomings of low mechanical strength and easy deformation of the non-metallic anti-sticking filter bucket 3, and maintain a seal between the metal filter bucket 2 and the non-metallic anti-sticking filter bucket 3.

[0044] The positioning rod 6 can be connected to the grille 5 by a fixed connection method, including spot welding, locking buckle, and hook.

[0045] Among them, the positioning rod 6 is used to prevent the non-metallic anti-sticking filter bucket 3 from being deformed under the effects of vacuum adsorption, thermal expansion and contraction, so as to strengthen the non-metallic anti-sticking filter bucket 3 to a certain extent, overcome the shortcomings of low mechanical strength and easy deformation of the non-metallic anti-sticking filter bucket 3, and maintain the seal between the metal filter bucket 2 and the non-metallic anti-sticking filter bucket 3.

[0046] Wherein, the head of the positioning rod 6 is provided with an elastic ring.

[0047] The small sleeve 7 can be made of a material with a slightly lower surface energy, including acid-resistant rubber, PTFE, and PVDF, so as to reduce the surface adhesion of the positioning rod 6 .

[0048] The large sleeve 8 is sleeved on the inner surface of the lower pipe of the filter bucket.

[0049] The large sleeve 8 can be made of a material with a slightly lower surface energy, including acid-resistant rubber, PTFE, and PVDF, so as to reduce the phenomenon of adhesion on the inner surface of the lower pipe of the filter bucket.

[0050] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-sticking filter hopper and filter plate device, comprising a sealing strip pressing mechanism (1), a metal filter hopper (2), a non-metallic anti-sticking filter hopper (3), a filter screen (4), a grille (5), a positioning rod (6), a small sleeve (7), and a large sleeve (8); characterized in that: The sealing strip pressing mechanism (1) is located at the intersection of the metal filter bucket (2) and the non-metal anti-sticking filter bucket (3), the non-metal anti-sticking filter bucket (3) is attached to the metal filter bucket (2), the filter screen (4) is located above the grille (5), and a plurality of positioning rods (6) are installed below the grille (5) in a fixed connection manner, the small sleeve (7) is sleeved on the positioning rods (6), and the large sleeve (8) is sleeved on the inner surface of the pipe at the bottom of the filter bucket.

2. The anti-sticking filter bucket and filter disc device according to claim 1, characterized in that: The fixed connection methods include spot welding, locks, and hooks.

3. The anti-sticking filter bucket and filter disc device according to claim 1, characterized in that: The sealing strip pressing mechanism (1) comprises: a sealing strip pressing device (11) and a sealing strip (12).

4. The anti-sticking filter bucket and filter disc device according to claim 1, characterized in that: The head of the positioning rod (6) is provided with an elastic ring.

5. The anti-sticking filter bucket and filter disc device according to claim 3, characterized in that: The sealing strip pressing device (11) locks the sealing strip (12) in a fixed connection manner.

6. The anti-sticking filter bucket and filter bypass device according to claim 3, characterized in that: The materials used to make the sealing strip (12) include acid-resistant rubber and expansion F4.

7. The anti-sticking filter bucket and filter bypass device according to claim 5, characterized in that: The fixed connection methods include bolts and spot welding.

8. The anti-sticking filter bucket and filter disc device according to claim 1, characterized in that: The non-metallic anti-sticking filter bucket (3), the small sleeve (7) and the large sleeve (8) are prefabricated with a material having a slightly lower surface energy.

9. The anti-sticking filter bucket and filter disc device according to claim 8, characterized in that: Materials with slightly lower surface energy include acid-resistant rubber, PTFE, PVDF, and anti-stick ceramics.

10. The anti-sticking filter bucket and filter disc device according to claim 3, characterized in that: The structural types of the sealing strip pressing device (11) include a wedge-shaped block pressing method, a top-pressure pressing method, an embedded round bar pressing method, and a spring-type pressing method.

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