Plate-and-frame filter pressing device for producing polyaluminum chloride

Abstract

The utility model discloses a plate-and-frame filter pressing device for producing polyaluminum chloride, and belongs to the technical field of polyaluminum chloride. The device comprises a box body, a filter pressing part and a transmission part, the filter pressing part comprises a thrust plate, filter pressing plates, a pressing plate and a steam heating plate, the multiple filter pressing plates are arranged side by side, the thrust plate and the pressing plate are coaxially arranged on the two sides of the filter pressing plates, the side face, away from the thrust plate, of the pressing plate is connected with the transmission part, and the steam heating plate is arranged on the transmission part. The steam heating plates are arranged between the adjacent plate frames at intervals; scrapers are mounted on the two sides of the filter pressing plate, and the end parts of the scrapers abut against the side surfaces of the filter pressing plate. According to the plate-and-frame filter pressing device for producing the polyaluminum chloride, crystals on the filter cloth are scraped off through the scraping plate arranged on the filter pressing plate, and the crystals on the filter cloth are heated and dissolved in cooperation with the steam heating plate, so that the problem that the polyaluminum chloride is easy to crystallize in the filter pressing process is effectively solved, and the filter pressing working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polyaluminium chloride, in particular to a plate-frame filter press device for polyaluminium chloride production. Background Art

[0002] Polyaluminium chloride (PAC) is a commonly used water treatment agent, especially for drinking water treatment. It is an inorganic polymer coagulant, which is made by reacting a hydrochloric acid solution with a high aluminium content with aluminium chloride or aluminium hydroxide.

[0003] In drinking water treatment, polyaluminium chloride is mainly used in coagulation and flocculation processes. Its main functions are: (1) Coagulation: After PAC is added to water, it will quickly react chemically with suspended matter, colloids, dissolved matter, etc. in the water to form larger aggregates or flocs. (2) Flocculation: By forming flocs, PAC helps to aggregate tiny particles in the water into larger clumps, increase the sedimentation rate of suspended matter, and thus accelerate the sedimentation and separation process of suspended matter.

[0004] In the production process of polyaluminium chloride, filter pressing is often used to separate the solid and liquid of the reaction mixture and separate the water from the polyaluminium chloride gel for subsequent treatment and drying. During the filter pressing process, polyaluminium chloride is easy to crystallize on the plate frame through the filter cloth, which affects the difficulty of cleaning the filter cloth and the difficulty of stripping the filter residue, and affects the efficiency of the filter pressing. Utility Model Content

[0005] The utility model aims to provide a plate-frame filter press device for polyaluminium chloride production, so as to solve the problem that in the existing polyaluminium chloride filter press process, crystallization is easy to occur on the plate frame, thus affecting the filter press working effect.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] The utility model provides a plate-frame filter press device for polyaluminium chloride production, comprising: a box body, a filter press component and a transmission component, wherein the filter press component is arranged in the box body, and the transmission component is arranged on the box body and connected to the filter press component;

[0008] The filter press component comprises: a thrust plate, a filter press plate, a clamping plate and a steam heating plate, a plurality of the filter press plates are arranged side by side, the thrust plate and the clamping plate are coaxially arranged on both sides of the filter press plate, the side of the clamping plate away from the thrust plate is connected to the transmission component, and the steam heating plate is arranged between adjacent plate frames at intervals;

[0009] Scrapers are installed on both sides of the filter press plate, and the ends of the scrapers are against the side surfaces of the filter press plate.

[0010] Furthermore, in the plate-frame filter press device for producing polyaluminium chloride, the transmission component comprises: a push rod and a motor, the push rod is connected to the output end of the motor, and the end of the push rod is mounted on the clamping plate.

[0011] Furthermore, in the plate-frame filter press device for producing polyaluminium chloride, the filter press plate comprises: a filter press frame, a sealing cloth strip and a filter cloth, the sealing cloth strip is arranged on the inner wall of the filter press frame, and the filter cloth is connected to the sealing cloth strip on all sides.

[0012] Furthermore, in the plate-frame filter press device for producing polyaluminium chloride, slide grooves are provided on both sides of the filter press frame, and the scraper is installed in the slide grooves.

[0013] Furthermore, in the plate-and-frame filter press device for producing polyaluminium chloride, a slider is provided at the bottom of the filter press frame, a slide rail is provided at the bottom of the box body, and the slider is provided in the slide rail.

[0014] Furthermore, in the plate and frame filter press device for producing polyaluminium chloride, the filter cloth comprises: a fiber cloth layer, a fiber support layer and an anti-sticking layer, the fiber cloth layer is arranged on both sides of the fiber support layer, and the anti-sticking layer obtained by coating is formed on the outer side of the fiber cloth layer.

[0015] Furthermore, in the plate and frame filter press device for producing polyaluminium chloride, the anti-sticking layer is a polytetrafluoroethylene layer.

[0016] Furthermore, in the plate-and-frame filter press device for producing polyaluminium chloride, first connecting holes are provided at the top and bottom of the filter press frame.

[0017] Furthermore, in the plate-frame filter press device for producing polyaluminium chloride, a plurality of steam heat dissipation holes are evenly arranged on the plate surface of the steam heating plate.

[0018] Furthermore, in the plate-and-frame filter press device for producing polyaluminium chloride, second connecting holes are provided at the top and bottom of the steam heating plate.

[0019] The utility model has the following beneficial effects:

[0020] The plate and frame filter press device for polyaluminium chloride production provided by the utility model scrapes off the crystals on the filter cloth by means of a scraper arranged on the filter press plate, and heats and dissolves the crystals on the filter cloth in cooperation with a steam heating plate, thereby effectively solving the problem that polyaluminium chloride is easy to crystallize during the filter press process and effectively improving the filter press working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of a plate-frame filter press device for producing polyaluminium chloride according to the utility model;

[0023] Figure 2 It is a structural schematic diagram of the filter press plate in the plate-frame filter press device for producing polyaluminium chloride of the utility model;

[0024] Figure 3 It is a schematic diagram of the structure of the filter cloth in the plate-frame filter press device for producing polyaluminium chloride of the utility model;

[0025] Figure 4 The utility model is a schematic diagram of the structure of the steam heating plate in the plate and frame filter press device for producing polyaluminium chloride.

[0026] Marks and corresponding parts names in the attached drawings:

[0027] In the figure: 10-box, 11-slide rail, 20-filter press component, 21-thrust plate, 22-filter press plate, 221-filter press frame, 222-sealing cloth strip, 223-filter cloth, 2231-fiber cloth layer, 2232-fiber support layer, 2233-anti-sticking layer, 224-slide groove, 225-slider, 226-first connecting hole, 23-pressing plate, 24-scraper, 25-steam heating plate, 251-steam heat dissipation hole, 252-second connecting hole, 30-transmission component, 31-push rod, 32-motor. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example

[0031] Please refer to Figure 1-4The embodiment of the utility model provides a plate-frame filter press device for polyaluminium chloride production, comprising: a box body 10, a filter press component 20 and a transmission component 30, wherein the filter press component 20 is arranged in the box body 10, and the transmission component 30 is arranged on the box body 10 and connected to the filter press component 20;

[0032] The filter press component 20 includes: a thrust plate 21, a filter press plate 22, a pressing plate 23 and a steam heating plate 25. A plurality of filter press plates 22 are arranged side by side, the thrust plate 21 and the pressing plate 23 are coaxially arranged on both sides of the filter press plate 22, the side of the pressing plate 23 away from the thrust plate 21 is connected to the transmission component 30, and the steam heating plate 25 is arranged between adjacent plate frames at intervals;

[0033] Scrapers 24 are installed on both sides of the filter press plate 22 , and the ends of the scrapers 24 abut against the side surfaces of the filter press plate 22 .

[0034] The plate and frame filter press device for the production of polyaluminium chloride provided by the utility model scrapes off the crystals on the filter cloth 223 by means of a scraper 24 arranged on the filter press plate 22, and heats and dissolves the crystals on the filter cloth 223 in cooperation with a steam heating plate 25, thereby effectively solving the problem that polyaluminium chloride is easy to crystallize during the filter press process and effectively improving the filter press working efficiency.

[0035] In some feasible embodiments, the transmission component 30 includes: a push rod 31 and a motor 32, the push rod 31 is connected to the output end of the motor 32, and the end of the push rod 31 is installed on the pressing plate 23. The motor 32 is started to drive the push rod 31 to move to drive the filter pressing component 20, and the pressing plate 23, the filter pressing plate 22 and the thrust plate 21 cooperate to perform filtration.

[0036] In some feasible embodiments, the filter press plate 22 includes: a filter press frame 221, a sealing cloth strip 222 and a filter cloth 223. The sealing cloth strip 222 is arranged on the inner wall of the filter press frame 221, and the filter cloth 223 is connected to the sealing cloth strip 222 on all sides. The installation of the filter cloth 223 and the filter press frame 221 is achieved through the sealing cloth strip 222. At the same time, the setting of the sealing cloth strip 222 limits the area of ​​the filter cloth 223, which is more conducive to the scraper 24 scraping off the crystals on the filter cloth 223.

[0037] In some feasible embodiments, a chute 224 is provided on both sides of the filter press frame 221, and the scraper 24 is installed in the chute 224. The setting of the chute 224 limits the movement direction of the scraper 24, and the scraper 24 reciprocates up and down in the chute 224 to scrape off the crystals on the filter cloth 223.

[0038] In some feasible embodiments, a slider 225 is provided at the bottom of the filter press frame 221, a slide rail 11 is provided at the bottom of the box body 10, and the slider 225 is provided in the slide rail 11. Through the cooperation between the slider 225 and the slide rail 11, the movement path of the filter press component 20 is limited, the filter press is more stable, and shaking is avoided.

[0039] In some feasible embodiments, the filter cloth 223 includes: a fiber cloth layer 2231, a fiber support layer 2232 and an anti-sticking layer 2233, wherein the fiber cloth layer 2231 is disposed on both sides of the fiber support layer 2232, and an anti-sticking layer 2233 is formed on the outer side of the fiber cloth layer 2231 by coating. The double-layer fiber cloth has a better filtering effect, and the fiber support layer 2232 better supports the fiber cloth layer 2231 to maintain flatness. In addition, an anti-sticking layer 2233 is formed by coating the outer side of the fiber cloth layer 2231, which effectively solves the problem that the filter residue does not fall off automatically.

[0040] In some feasible embodiments, the anti-sticking layer 2233 is a polytetrafluoroethylene layer. Polytetrafluoroethylene has extremely low surface tension and extremely high surface energy, making its surface very smooth and almost non-adherent to other substances, thus having excellent anti-sticking properties. It also has excellent high temperature resistance and can maintain a stable anti-sticking effect even when encountering steam. The setting of the polytetrafluoroethylene layer can achieve a good anti-sticking effect and ensure that the filter residue falls off automatically.

[0041] In some feasible embodiments, the top and bottom of the filter press frame 221 are provided with first connection holes 226. A plurality of first connection holes 226 are provided, and a plurality of filter press plates 22 are installed and fixed by connecting rods.

[0042] In some feasible embodiments, a plurality of steam heat dissipation holes 251 are evenly formed on the surface of the steam heating plate 25. The steam heating plate 25 is connected to a steam delivery pipeline, and the surface of the steam heating plate 25 is directly opposite to the filter cloth 223. The steam processed by the steam heat dissipation holes 251 just contacts the filter cloth 223, dissolving the crystals on the filter cloth 223.

[0043] In some feasible embodiments, the top and bottom of the steam heating plate 25 are provided with second connection holes 252. A plurality of second connection holes 252 are provided, and the second connection holes 252 correspond to the first connection holes 226, and the filter press plate 22 and the steam heating plate 25 are connected and fixed by a connecting rod.

[0044] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above are only specific implementation methods of the utility model and are not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A plate-frame filter press device for producing polyaluminium chloride, characterized in that: include: A housing (10), a filter press component (20) and a transmission component (30), wherein the filter press component (20) is arranged in the housing (10), and the transmission component (30) is arranged on the housing (10) and connected to the filter press component (20); The filter press component (20) comprises: a thrust plate (21), a filter press plate (22), a clamping plate (23) and a steam heating plate (25); a plurality of the filter press plates (22) are arranged side by side; the thrust plate (21) and the clamping plate (23) are coaxially arranged on both sides of the filter press plate (22); the side of the clamping plate (23) away from the thrust plate (21) is connected to the transmission component (30); and the steam heating plate (25) is arranged between adjacent plate frames at intervals; Scrapers (24) are installed on both sides of the filter press plate (22), and the ends of the scrapers (24) abut against the side surfaces of the filter press plate (22).

2. The plate-frame filter press device for producing polyaluminium chloride according to claim 1, characterized in that: The transmission component (30) comprises: a push rod (31) and a motor (32); the push rod (31) is connected to the output end of the motor (32); and the end of the push rod (31) is mounted on the pressing plate (23).

3. The plate-frame filter press device for producing polyaluminium chloride according to claim 1, characterized in that: The filter press plate (22) comprises: a filter press frame (221), a sealing cloth strip (222) and a filter cloth (223); the sealing cloth strip (222) is arranged on the inner wall of the filter press frame (221), and the filter cloth (223) is connected to the sealing cloth strip (222) at four sides.

4. The plate-frame filter press device for producing polyaluminium chloride according to claim 3, characterized in that: Slide grooves (224) are provided on both sides of the filter press frame (221), and the scraper (24) is installed in the slide grooves (224).

5. The plate-frame filter press device for producing polyaluminium chloride according to claim 3, characterized in that: A sliding block (225) is arranged at the bottom of the filter press frame (221), a sliding rail (11) is arranged at the bottom of the box body (10), and the sliding block (225) is arranged inside the sliding rail (11).

6. The plate-frame filter press device for producing polyaluminium chloride according to claim 3, characterized in that: The filter cloth (223) comprises: a fiber cloth layer (2231), a fiber support layer (2232) and an anti-sticking layer (2233), wherein the fiber cloth layer (2231) is arranged on both sides of the fiber support layer (2232), and the anti-sticking layer (2233) is formed on the outer side of the fiber cloth layer (2231) by coating.

7. The plate-frame filter press device for producing polyaluminium chloride according to claim 6, characterized in that: The anti-sticking layer (2233) is a polytetrafluoroethylene layer.

8. The plate-frame filter press device for producing polyaluminium chloride according to claim 3, characterized in that: The top and bottom of the filter press frame (221) are provided with first connection holes (226).

9. The plate-frame filter press device for producing polyaluminium chloride according to claim 1, characterized in that: The plate surface of the steam heating plate (25) is evenly provided with a plurality of steam heat dissipation holes (251).

10. The plate-frame filter press device for producing polyaluminium chloride according to claim 9, characterized in that: Second connection holes (252) are provided at the top and bottom of the steam heating plate (25).

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