A slurry filtration device

Abstract

The utility model discloses a kind of slurry filtering devices, it is related to filter device technical field, including filter box and filter plate;The cavity structure is equipped in the filter box interior, the filter plate is vertically arranged in the cavity structure, and the filter plate is densely covered with several filter holes;The filter plate separates the cavity structure into two chambers;The filter box is equipped with a feeding pipe and impurity cleaning hole corresponding to one of the chambers, and the filter box is equipped with a discharge pipe and exhaust pipe corresponding to another chamber.The utility model can filter and isolate the impurities formed in hydrolysis process of metatitanic acid slurry, improve product quality.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to a slurry filtration device. Background Technology

[0002] In the production of titanium dioxide paste, the preparation, reaction, and washing of metatitanic acid directly affect the purity and quality of the final product. This process covers raw material processing, chemical reaction, solid-state separation, washing, and purification. After the metatitanic acid slurry is hydrolyzed, the hydrolyzed material is cooled by a metatitanic acid cooler, then pumped by a metatitanic acid pump through an external pipe into a hydrolyzed slurry storage tank. From there, it is fed to a primary washing tank by a hydrolyzed slurry supply pump. Because some flocculent matter and adhesive substances are formed during the hydrolysis process, some precipitates form in the hydrolyzed slurry storage tank. These impurities accompany the slurry into the primary washing tank during delivery, leading to a decrease in product quality. Therefore, a filtration device needs to be installed between the hydrolyzed slurry storage tank and the primary washing tank. Utility Model Content

[0003] This invention provides a slurry filtration device that can filter and isolate impurities formed in the hydrolysis process of metatitanic acid slurry, thereby improving product quality.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A slurry filtration device includes a filter box and a filter plate; the filter box has a cavity structure inside, and the filter plate is vertically arranged in the cavity structure, with a plurality of filter holes densely distributed on the filter plate; the filter plate divides the cavity structure into two chambers; the filter box has an inlet pipe and an impurity cleaning hole corresponding to one of the chambers, and the filter box has an outlet pipe and an exhaust pipe corresponding to the other chamber.

[0005] Furthermore, the filter box includes a box body and a box cover. The box body has a square structure, and the box cover is fixedly connected to the top of the box body by bolts. A sealing gasket is provided at the position where the top end face of the box body and the bottom of the box cover are in contact.

[0006] Furthermore, the exhaust pipe is disposed on the box cover, and a row of air valves is connected to the end of the exhaust pipe.

[0007] Furthermore, the feed pipe and the discharge pipe are arranged opposite each other on the corresponding side of the filter box.

[0008] Furthermore, the impurity cleaning hole is located on the side of the filter box adjacent to the feed pipe, and the impurity cleaning hole is detachably and sealingly connected to a blind plate.

[0009] Furthermore, a fixing frame is fixedly connected to both sides of the inner wall of the filter box corresponding to the filter plate. Each fixing frame includes four L-shaped fixing strips. One side of each L-shaped fixing strip is fixedly connected to the inner wall of the filter box on the corresponding side. The other side of each L-shaped fixing strip is located on the same plane. One side of the filter plate abuts against the four L-shaped fixing strips on the corresponding side. The filter plate is sealed to the four sides of the box body with sealant. The two fixing frames clamp and fix the filter plate.

[0010] Furthermore, the L-shaped fixing strip is made of angle iron, and each angle iron is welded and fixed to the inner wall of the corresponding side of the filter box. The outer surface of each angle iron is covered with a layer of vinyl resin.

[0011] Furthermore, the filter plate is made of PFA material, the pore diameter of the filter holes is 2.5mm, a plurality of the filter holes are arranged in a rectangular array, and the center-to-center distance between two adjacent filter holes is 4mm.

[0012] The beneficial effects of this utility model are: 1) This utility model adds a filter device between the hydrolysis slurry storage tank and the washing tank. The filter plate in the filter box cleans the impurities attached to the slurry, preventing the impurities from flowing into the subsequent process and improving the product quality. The impurities trapped in the box are cleaned regularly through the impurity cleaning hole to avoid clogging of the filter plate. The air pressure in the box is balanced through the exhaust pipe to avoid excessive pressure or negative pressure in the filter box.

[0013] 2) The filter plate is made of corrosion-resistant PFA material, and the L-shaped fixing strip used to fix the filter plate is covered with corrosion-resistant vinyl resin material to extend its service life. Attached Figure Description

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model; Figure 2 for Figure 1 Cross-sectional view at point A in the middle; Figure 3 This is a schematic diagram of the filter plate in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the box cover in an embodiment of this utility model; Attached image labels: 1-Filter box, 2-Filter plate, 13-Fixing frame, 3-Feed pipe, 4-Impurity cleaning hole, 5-Discharge pipe, 6-Exhaust pipe, 7-Air exhaust valve, 11-Box body, 12-Box cover, 13-Fixing frame. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a central component. When a component is described as "connected to" another component, it can be directly connected to the other component or may have a central component. When a component is described as "set on" another component, it can be directly set on the other component or may have a central component. When a component is described as "set in the middle," it is not simply set in the exact center, as long as it is not set within the area defined by both ends being in the middle. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] Reference Figures 1 to 4As shown, a slurry filtration device includes a filter box 1 and a filter plate 2. The filter box 1 has an internal cavity structure, and the filter plate 2 is vertically arranged within the cavity structure. The filter plate 2 is densely covered with a plurality of filter holes 21. The filter plate 2 divides the cavity structure into two chambers, one in front and one behind. The filter box 1 has an inlet pipe 3 and an impurity cleaning hole 4 corresponding to one of the chambers, and an outlet pipe 5 and an exhaust pipe 6 corresponding to the other chamber. Specifically, the filter box 1 includes a box body 11 and a box cover 12. The box body 11 has a square structure, and the box cover 12 is fixedly connected to the top of the box body 11 by bolts. A sealing gasket is provided at the position where the top end face of the box body 11 is in contact with the bottom of the box cover 12. The exhaust pipe 6 is provided on the box cover 12, and a row of air valves 7 is connected to the end of the exhaust pipe. The inlet pipe 3 and the outlet pipe 5 are arranged opposite each other on the corresponding side of the filter box 2. The impurity cleaning hole 4 is located on the side of the filter box 1 adjacent to the feed pipe 3, and the impurity cleaning hole 4 is detachably and sealingly connected to a blind plate. This utility model adds a filter box between the hydrolysis slurry storage tank and a washing tank to filter impurities in the slurry. The slurry enters the filter box 1 from the feed pipe 3, and the filter plates 2 inside the filter box 1 clean the impurities attached to the slurry, preventing impurities from flowing into subsequent processes and improving product quality. The impurity cleaning hole is used to periodically clean the impurities trapped inside the box, preventing impurities from clogging the filter plates 2. The exhaust pipe 6 balances the air pressure inside the box, avoiding excessive pressure or negative pressure within the filter box 1.

[0019] During filtration, the slurry exerts pressure on the filter plate 2, thus requiring support and fixation. A fixing frame 13 is fixedly connected to both sides of the filter plate 2 on the inner wall of the filter box 1. Each fixing frame 13 includes four L-shaped fixing strips. One side of each L-shaped fixing strip is fixedly connected to the corresponding inner wall of the filter box 1, and the other side of each L-shaped fixing strip is on the same plane. One side of the filter plate 2 abuts against the four L-shaped fixing strips on the corresponding side. The filter plate 2 is sealed to the four sides of the box 11 with sealant. The two fixing frames 13 clamp and fix the filter plate 2. Specifically, the L-shaped fixing strips are angle irons, each angle iron is welded and fixed to the corresponding inner wall of the filter box 1, and the outer surface of each angle iron is covered with a layer of vinyl resin. The filter plate 2 is made of PFA material, the diameter of the filter holes 21 is 2.5mm, and several filter holes 21 are arranged in a rectangular array, with a center-to-center distance of 4mm between adjacent filter holes 21. Angle iron is coated with vinyl ester resin using a manual pasting method. The fixing frame 13 on the rear side of filter plate 2 is the main component for bearing the slurry pressure. During installation, the fixing frame on the rear side of the filter plate needs to be welded and fixed first, then coated with vinyl ester resin. The filter plate 2 is installed only after the vinyl ester resin has completely solidified. This ensures that the fixing frame on the rear side of filter plate 2 has good corrosion resistance. The fixing frame on the front side of filter plate 2 serves to fix filter plate 2 and prevent it from tilting forward. Its stress is relatively small. Furthermore, the top of the cover 12 is not immersed in slurry for extended periods. Therefore, even if the fixing frame 13 on the front side is corroded, it will not affect the positioning of filter plate 2 and will still have a long service life.

[0020] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the scope of the technical solution of this utility model.

Claims

1. A slurry filtration device, characterized in that, The filter includes a filter box and a filter plate; the filter box has a cavity structure inside, and the filter plate is vertically arranged in the cavity structure with a number of filter holes; the filter plate divides the cavity structure into two chambers; the filter box has a feed pipe and an impurity cleaning hole corresponding to one of the chambers, and a discharge pipe and an exhaust pipe corresponding to the other chamber.

2. The slurry filtration device according to claim 1, characterized in that, The filter box includes a box body and a box cover. The box body has a square structure. The box cover is fixedly connected to the top of the box body by bolts, and a sealing gasket is provided at the position where the top end face of the box body and the bottom of the box cover are in contact.

3. The slurry filtration device according to claim 2, characterized in that, The exhaust pipe is mounted on the box cover, and a row of air valves is connected to the end of the exhaust pipe.

4. A slurry filtration device according to claim 2, characterized in that, The feed pipe and the discharge pipe are arranged opposite each other on the corresponding side of the filter box.

5. A slurry filtration device according to claim 4, characterized in that, The impurity cleaning hole is located on the side of the filter box adjacent to the feed pipe, and the impurity cleaning hole is detachably and sealingly connected to a blind plate.

6. A slurry filtration device according to claim 2, characterized in that, A fixing frame is fixedly connected to both sides of the inner wall of the filter box corresponding to the filter plate. Each fixing frame includes four L-shaped fixing strips. One side of each L-shaped fixing strip is fixedly connected to the inner wall of the filter box on the corresponding side. The other side of each L-shaped fixing strip is located on the same plane. One side of the filter plate abuts against the four L-shaped fixing strips on the corresponding side. The filter plate is sealed to the four sides of the box body with sealant. The two fixing frames clamp and fix the filter plate.

7. A slurry filtration device according to claim 6, characterized in that, The L-shaped fixing strip is made of angle iron, and each angle iron is welded and fixed to the inner wall of the corresponding side of the filter box. The outer surface of each angle iron is covered with a layer of vinyl resin.

8. A slurry filtration device according to claim 6, characterized in that, The filter plate is made of PFA material, the pore diameter is 2.5mm, and a plurality of the filter pores are arranged in a rectangular array, with a center-to-center distance of 4mm between two adjacent filter pores.

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