A combined filtration and washing device for chemical production

Abstract

This utility model relates to the field of chemical equipment technology, and provides a combined filtration and washing device for chemical production, including a vessel body; a water sprayer disposed on the top wall of the vessel body; several filter covers disposed below the inner peripheral wall of the vessel body, and the filter covers are arranged at intervals along the inner peripheral wall of the vessel body; a filter plate disposed in the vessel body, located below the filter covers, and both the filter plate and the filter covers are used to separate solid and liquid materials; several drain pipes are disposed on the outer wall of the vessel body, and the drain pipes are located at the bottom inside the filter covers; and a liquid outlet pipe is disposed at the bottom of the vessel body. Through the above technical solution, multi-stage filtration significantly improves the solid-liquid separation rate and reduces the frequency of clogging compared to traditional single-stage filtration structures; the automatic water spraying combined with stirring washing method improves the cleanliness of the vessel body, eliminates the need for manual rinsing, and reduces labor intensity; the staged drainage design improves drainage efficiency and reduces waste liquid residue.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a combined filtration and washing device for chemical production. Background Technology

[0002] In the solid-liquid separation and washing processes of chemical production, especially in fields such as pharmaceuticals, food, and fine chemicals where high material purity is required, traditional equipment has significant technical limitations. Filtration often relies on a single filter structure, which is prone to clogging when handling high-viscosity or fine-particle materials, leading to incomplete solid-liquid separation and requiring frequent shutdowns for disassembly and cleaning, severely impacting production continuity. Secondly, existing methods for washing the vessel generally rely on manual rinsing with handheld high-pressure water guns, which is not only labor-intensive and inefficient, but also uses a single-outlet design for the drainage system, failing to accurately control liquid discharge according to the filtration stage, resulting in low drainage efficiency, large amounts of residual waste liquid, and further increased subsequent cleaning costs. To address these issues, this device effectively solves the core problems of incomplete filtration and washing, and cumbersome operation associated with traditional equipment by integrating a multi-stage filtration structure, a dynamic washing mechanism combining automatic water spraying and stirring, and a graded drainage system. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides a chemical production filtration and washing combined device, which solves the technical problems of incomplete filtration and washing and cumbersome operation of traditional equipment in the prior art.

[0004] According to one aspect, at least one embodiment of the present invention provides a combined filtration and washing device for chemical production, used to separate solid materials and liquid materials, comprising:

[0005] The vessel body;

[0006] A stirring rod is rotatably mounted inside the vessel.

[0007] A water sprayer is installed on the top wall of the vessel body, and the water sprayer is used to spray water into the vessel body;

[0008] The filter cover has a plurality of filter covers, which are disposed below the inner peripheral wall of the vessel and are arranged at intervals along the inner peripheral wall of the vessel.

[0009] A filter plate is disposed inside the vessel body and located below the filter cover. Both the filter plate and the filter cover are used to separate solid materials and liquid materials.

[0010] The drain pipe has several drain pipes, all of which are disposed on the outer wall of the vessel. Each drain pipe corresponds to a filter cover and is located at the bottom inside the filter cover. The drain pipe is used to discharge the liquid material filtered by the filter cover.

[0011] A liquid outlet pipe is located at the bottom of the vessel body and is used to discharge the liquid material filtered by the filter plate.

[0012] Optionally, the water sprayer includes:

[0013] An annular water distribution pipe is installed on the top wall of the vessel body and arranged coaxially with the stirring rod. A water inlet is provided on the side wall of the annular water distribution pipe, and the water inlet is connected to an external water pipe.

[0014] A plurality of water spray pipes are provided, and the plurality of water spray pipes are spaced apart on the bottom surface of the annular water distribution pipe, and the water spray pipes are connected to the annular water distribution pipe.

[0015] Optionally, the water spray pipe has a fixed section and a corrugated section. The fixed section is disposed on the bottom surface of the annular water distribution pipe, and the corrugated section is disposed at the end of the fixed section away from the annular water distribution pipe. The corrugated section can change the water outlet direction.

[0016] Optional, also includes:

[0017] The backflush pipe comprises several tubes, all of which are disposed through the vessel body. The tubes are respectively disposed inside the filter hood and below the filter plate. Each tube has an air inlet and several air outlets. The air inlet is located outside the vessel body, and the air outlets are spaced apart on the tube body of the tube. The air outlets face the filter hood or the filter plate and are used to spray gas onto the filter hood and the filter plate to blow off solid materials adhering to them.

[0018] Optionally, the filter plate includes:

[0019] The mounting frames are arranged in a circular pattern within the vessel body, with the side walls of adjacent mounting frames abutting against each other.

[0020] There are several filter screens, and each filter screen corresponds to a mounting frame. The filter screens are detachably mounted on the mounting frames.

[0021] Optionally, the filter screen is further covered with several layers of filter cloth.

[0022] Optionally, the filter cover is rectangular, and at least one side of the outer wall of the filter cover is fitted with a filter screen.

[0023] Optionally, the vessel body includes:

[0024] cylindrical body;

[0025] The base is detachably installed at the bottom of the vessel body, and a sealing ring is provided between the bottom surface of the vessel body and the top surface of the base.

[0026] Optionally, a connecting frame is provided at the top of the annular water distribution pipe, and a flange is provided at the top of the connecting frame. The connecting frame is connected to the top of the vessel body through the flange.

[0027] Optionally, a movable frame is provided on the outer side of the bottom of the base.

[0028] The beneficial effects of the embodiments of this utility model are as follows:

[0029] In this invention, the solid-liquid mixture is fed into the reactor through the top inlet, and the stirring rod is activated to ensure full contact and reaction between the solid and liquid materials. After the reaction is complete, the liquid passes through the filter cover and enters the drain pipe under centrifugal force, and is discharged under the control of a solenoid valve; the remaining material permeates the filter plate under gravity, and the liquid is discharged from the outlet pipe, completing the liquid filtration. During the washing stage, high-pressure water is introduced through the sprayer, and the stirring rod is accelerated. The water flow forms a vortex under the stirring action to wash the reactor wall and the material. The washing wastewater is discharged after passing through the filter cover and filter plate.

[0030] Multi-stage filtration significantly improves the solid-liquid separation rate and reduces the frequency of clogging compared to traditional single-stage filtration structures; the automatic water spraying combined with stirring washing method improves the cleanliness of the vessel body, eliminates the need for manual rinsing, and reduces labor intensity; the staged drainage design improves drainage efficiency and reduces the amount of waste liquid residue. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the filter and washing combined device in one embodiment of the present invention;

[0033] Figure 2 for Figure 1 A cross-sectional view at point AA in the embodiment;

[0034] Figure 3 for Figure 1A schematic diagram of the structure of the annular water distribution pipe in the embodiment;

[0035] Figure 4 for Figure 1 The embodiment is shown in the structural diagram of the mounting frame.

[0036] In the diagram: 1. Kettle body, 101. Cylinder body, 102. Base, 2. Stirring rod, 3. Water sprayer, 31. Annular water distribution pipe, 32. Water inlet, 33. Water spray pipe, 331. Fixed section, 332. Corrugated pipe section, 34. Connecting frame, 35. Flange, 4. Filter cover, 5. Filter plate, 51. Mounting frame, 6. Drain pipe, 7. Liquid outlet pipe, 8. Backflush pipe, 81. Air inlet, 82. Air outlet, 9. Moving frame. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0038] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0039] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] like Figures 1-4 The diagram illustrates a chemical production filtration and washing combined device according to an embodiment of the present invention, used for separating solid and liquid materials. It includes a vessel body 1; a stirring rod 2 rotatably disposed within the vessel body 1; a water sprayer 3 disposed on the inner top wall of the vessel body 1, used to spray water into the vessel body 1; several filter covers 4 disposed below the inner peripheral wall of the vessel body 1, and spaced apart along the inner peripheral wall of the vessel body 1; filter plates 5 disposed within the vessel body 1, located below the filter covers 4, both the filter plates 5 and the filter covers 4 used for separating solid and liquid materials; several drain pipes 6 disposed on the outer wall of the vessel body 1, each drain pipe corresponding to a filter cover 4, the drain pipes 6 located at the inner bottom of the filter covers 4, used to discharge the liquid material filtered by the filter covers 4; and an outlet pipe 7 disposed at the bottom of the vessel body 1, used to discharge the liquid material filtered by the filter plates 5.

[0044] For example, such as Figure 1 As shown, specifically, the vessel body 1 is a cylindrical sealed container made of stainless steel to withstand chemical corrosion; the stirring rod 2 is driven by a motor at the top of the vessel body 1, and inclined stirring blades are distributed on the rod, with the edges of the blades maintaining an appropriate distance from the inner wall of the vessel body 1; the water sprayer 3 is a ring-shaped pipe structure with multiple nozzles evenly distributed at the bottom; several filter covers 4 are arc-shaped and equidistantly arranged along the lower part of the inner circumference of the vessel body 1, and the filter covers 4 are made of stainless steel filter screens, with the opening of the cover facing the center of the vessel body 1; the filter plate 5 is a circular perforated plate, the surface of which is covered with filter cloth, and the edges are welded and fixed to the vessel body 1; several drain pipes 6 are respectively connected to the bottom of the filter covers 4, and solenoid valves are installed on the pipes; the outlet pipe 7 has a larger diameter than the drain pipe 6, is located at the center of the bottom of the vessel body 1, and is equipped with a manual valve.

[0045] During operation, the solid-liquid mixture is fed into the top inlet of the vessel 1, and the stirring rod 2 is activated to ensure full contact and reaction between the solid and liquid materials. After the reaction is complete, the liquid passes through the filter hood 4 and enters the drain pipe 6 under centrifugal force, and is discharged under the control of a solenoid valve; the remaining material permeates through the filter plate 5 under gravity, and the liquid is discharged from the outlet pipe 7, completing the liquid filtration. In the washing stage, high-pressure water is introduced through the water sprayer 3, and the stirring rod 2 is accelerated. The water flow forms a vortex under the stirring action to wash the vessel wall and the material. The washing wastewater is discharged after passing through the filter hood 4 and the filter plate 5.

[0046] Multi-stage filtration significantly improves the solid-liquid separation rate and reduces the frequency of clogging compared to traditional single-stage filtration structures; the automatic water spraying combined with stirring washing method improves the cleanliness of the vessel body 1, eliminating the need for manual rinsing and reducing labor intensity; the staged drainage design improves drainage efficiency and reduces waste liquid residue.

[0047] In some examples, the water sprayer 3 includes an annular water distribution pipe 31, which is disposed on the inner top wall of the vessel body 1 and coaxially arranged with the stirring rod 2. A water inlet 32 ​​is provided on the side wall of the annular water distribution pipe 31, and the water inlet 32 ​​is connected to an external water pipe. There are several water spray pipes 33, which are spaced apart on the bottom surface of the annular water distribution pipe 31 and are connected to the annular water distribution pipe 31.

[0048] For example, such as Figure 3 As shown, the annular water distribution pipe 31 and the stirring rod 2 are arranged coaxially, with an appropriate distance between them; the water inlet 32 ​​is connected to an external high-pressure water pipe through a flange 35 and is equipped with a flow control valve; several spray pipes 33 are vertically welded to the bottom of the annular water distribution pipe 31, with evenly distributed spacing.

[0049] During washing, high-pressure water from the outside enters the annular water distribution pipe 31 through the water inlet 32 ​​and is distributed to each spray pipe 33. By adjusting the water outlet direction of the nozzle, the nozzle can more comprehensively cover the inner wall of the vessel body 1, the stirring rod 2 and the surface of the filter structure, forming a three-dimensional rinsing in conjunction with the rotation of the stirring rod 2.

[0050] The combination of the annular water distribution pipe 31 and the multi-spray pipe 33 results in a wide spray coverage area, improving washing efficiency compared to the traditional single-nozzle structure, and ensuring stable water pressure to avoid the problem of insufficient local rinsing force.

[0051] In some examples, the water spray pipe 33 has a fixed section 331 and a corrugated section 332. The fixed section 331 is disposed on the bottom surface of the annular water distribution pipe 31, and the corrugated section 332 is disposed at the end of the fixed section 331 away from the annular water distribution pipe 31. The corrugated section 332 can change the direction of water outlet.

[0052] For example, such as Figure 3As shown, the fixed section 331 of the water spray pipe 33 is a rigid steel pipe, which is welded to the annular water distribution pipe 31; the corrugated pipe section 332 can be bent arbitrarily within a certain range, and a nozzle is installed at the end. By manually bending the corrugated pipe section 332, the water outlet direction of the nozzle can be changed.

[0053] Specifically, based on the internal contamination of the vessel body 1, before washing, the bending angle of the corrugated pipe section 332 is adjusted so that the nozzles are aimed at areas prone to material accumulation, such as the gaps in the filter cover 4, the back of the stirring blades, and the blades of the stirring rod 2, and high-pressure water is sprayed in a targeted manner during washing.

[0054] The adjustability of the corrugated pipe section 332 solves the problem that traditional fixed nozzles cannot clean dead corners, improves the cleaning qualification rate of the vessel body 1, and reduces the risk of cross-contamination caused by residual materials.

[0055] In some examples, several backflush pipes 8 are also included, all of which are installed through the vessel body 1. The backflush pipes 8 are respectively installed inside the filter cover 4 and below the filter plate 5. Each backflush pipe 8 has an air inlet 81 and several air outlets 82. The air inlet 81 is located outside the vessel body 1, and the air outlets 82 are spaced apart on the pipe body of the backflush pipe 8. The air outlets 82 face the filter cover 4 or the filter plate 5 and are used to spray gas onto the filter cover 4 and the filter plate 5 to blow off the solid material adhering to the filter cover 4 and the filter plate 5.

[0056] For example, such as Figure 1 As shown, several backflush pipes 8 are made of stainless steel. Some are horizontally inserted into the filter cover 4, with multiple air outlets 82 on the side of the pipe facing the filter screen. The rest are vertically arranged below the filter plate 5, with multiple air outlets 82 on the upward side of the pipe. The air inlets 81 of all backflush pipes 8 are connected to a high-pressure air source through branch pipes, and control valves are installed on the branch pipes. It should be noted that the air outlets 82 are nozzle structures. Furthermore, when backflush is not in progress, the control valves are closed. At this time, even if some liquid material enters the backflush pipe 8 through the air outlets 82, it will not affect the backflush pipe. When backflush is required, the high-pressure air will blow out the liquid material remaining in the backflush pipe.

[0057] When a decrease in the discharge flow rate is detected, the backflushing system is activated. High-pressure gas enters the backflushing pipe 8 through the inlet 81 and is sprayed onto the surface of the filter screen 4 and filter plate 5 through the outlet 82, blowing the attached solid particles off to the bottom of the vessel body 1. The backflushing function extends the clogging cycle of the filter structure, increases the continuous operation time of the equipment, reduces the number of downtime cleanings, and improves production efficiency.

[0058] In some examples, the filter plate 5 includes several mounting frames 51 arranged circumferentially inside the vessel body 1, with the side walls of adjacent mounting frames 51 abutting against each other; there are several filter screens, with each filter screen corresponding to a mounting frame 51, and the filter screens are detachably mounted on the mounting frames 51.

[0059] For example, such as Figure 2 As shown, the filter plate 5 consists of several sector-shaped mounting frames 51, which are made of aluminum alloy. Adjacent frames are spliced ​​or snapped together. The filter screen is made of stainless steel and is detachably fixed to the mounting frames 51 with bolts. A rubber sealing strip is provided at the contact point between the screen and the mounting frames 51. The modular design shortens the screen replacement time, reduces maintenance costs, and allows for the replacement of screens for different materials, thus improving the equipment's versatility.

[0060] In some examples, multiple layers of filter cloth are sequentially covered on the filter screen, and the edges of the filter cloth are fixed to the mounting frame 51 by pressure strips, forming a gradient filtration structure. Liquid materials pass through multiple layers of filter cloth sequentially and are finally discharged through the screen. Different layers of filter cloth respectively trap impurities of corresponding particle sizes. Gradient filtration reduces the amount of solid residue, and the filter cloths can be replaced individually, reducing consumable costs.

[0061] In some examples, the filter cover 4 is rectangular, and at least one side of its outer wall is fitted with a filter screen. Specifically, the filter cover 4 is a rectangular stainless steel frame with filter screens installed on the front and two sides. The back is sealed to the inner wall of the vessel body 1, and the edges of the filter screens are welded to the frame via folded edges, forming a multi-faceted filtration structure. Liquid materials under stirring conditions can pass through the filter screens from multiple directions within the filter cover 4, increasing the filtration area while reducing particle deposition on the filter screen surface using liquid turbulence. The rectangular structure combined with the multi-faceted filter screens increases the filtration area of ​​a single cover, improving filtration efficiency compared to a circular filter cover 4, and the rectangular design facilitates close fitting to the inner wall of the vessel body 1.

[0062] In some examples, the vessel body 1 includes a cylindrical body 101; a base 102 is detachably disposed at the bottom of the vessel body 1, and a sealing ring is provided between the bottom surface of the cylindrical body 101 and the top surface of the base 102.

[0063] For example, such as Figure 1As shown, the vessel body 1 has a vertical cylindrical structure 101 and a conical base 102 connected to the bottom of the cylindrical body 101 via a flange 35. A sealing ring is embedded between the flange 35 faces, and the bottom of the base 102 is connected to the liquid outlet pipe 7. When it is necessary to clean the residual material at the bottom of the vessel body 1, loosen the flange 35 bolts to separate the base 102 from the cylindrical body 101, and directly clean the conical inner wall. The sealing ring can be disassembled and replaced separately. Alternatively, the filter cover 4 and filter plate 5 can be disassembled and replaced after separating the cylindrical body 101 and the base 102. Disassembling the base 102 solves the problem of the traditional integrated vessel body 1's bottom being difficult to clean thoroughly, improving the residual material removal rate. The sealing ring design ensures the sealing performance of the equipment.

[0064] In some examples, the top of the annular water distribution pipe 31 is provided with a connecting frame 34, and the top of the connecting frame 34 is provided with a flange 35. The connecting frame 34 is connected to the top of the vessel body 1 through the flange 35.

[0065] For example, such as Figure 1 As shown, the top of the connecting frame 34 is connected to the flange 35 by bolts. The flange 35 matches the reserved flange on the top of the vessel body 1. The annular water distribution pipe 31 is fixed to the bottom of the connecting frame 34 by clamps, and the whole is coaxial with the stirring rod 2. When the stirring rod 2 rotates, the connecting frame 34 provides stable support to avoid interference between the water spray pipe 33 and the stirring blades. The rigid connection structure reduces the vibration amplitude of the water sprayer 3, ensuring a stable spray angle. At the same time, the flange 35 connection facilitates disassembly and maintenance, and improves installation accuracy.

[0066] In some examples, a movable frame 9 is provided on the outer side of the bottom of the base 102. The movable frame 9 is welded from steel pipes and has casters with brakes installed at the bottom. The movable frame 9 is connected to the pre-embedded steel plate at the bottom of the base 102 by bolts. The frame height is moderate and the levelness is adjustable. When the equipment needs to be moved, the caster brakes are released, and the vessel 1 can be moved to the designated position. After it is in place, the brakes are locked to fix it. The leveling bolts at the bottom of the frame are adjusted to ensure that the vessel 1 is in a level state. The movable frame 9 makes the relocation of the equipment simple, improves the flexibility of the workshop layout, and the leveling function ensures the stability of filtration and drainage, reducing the amount of residual liquid in the drainage.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A combined filtration and washing device for chemical production, used to separate solid and liquid materials, characterized in that, include: The vessel body (1); A stirring rod (2) is rotatably mounted inside the vessel body (1); A water sprayer (3) is installed on the inner top wall of the vessel body (1), and the water sprayer (3) is used to spray water into the vessel body (1); A filter cover (4) is provided, and the filter cover (4) is provided below the inner peripheral wall of the vessel body (1), and the filter cover (4) is arranged at intervals along the inner peripheral wall of the vessel body (1). The filter plate (5) is disposed inside the vessel body (1) and located below the filter cover (4). Both the filter plate (5) and the filter cover (4) are used to separate solid materials and liquid materials. The drain pipe (6) has several drain pipes, and all drain pipes (6) are disposed on the outer wall of the vessel body (1). The drain pipes (6) correspond one-to-one with the filter cover (4). The drain pipes (6) are located at the bottom inside the filter cover (4). The drain pipes (6) are used to discharge the liquid material filtered by the filter cover (4). The liquid outlet pipe (7) is located at the bottom of the vessel body (1) and is used to discharge the liquid material filtered by the filter plate (5).

2. The chemical production filtration and washing combined device according to claim 1, characterized in that, The water sprayer (3) includes: An annular water distribution pipe (31) is installed on the inner top wall of the vessel body (1) and arranged coaxially with the stirring rod (2). An inlet (32) is provided on the side wall of the annular water distribution pipe (31), and the inlet (32) is connected to an external water pipe. There are several water spray pipes (33), and several water spray pipes (33) are spaced apart on the bottom surface of the annular water distribution pipe (31). The water spray pipes (33) are connected to the annular water distribution pipe (31).

3. The chemical production filtration and washing combined device according to claim 2, characterized in that, The water spray pipe (33) has a fixed section (331) and a corrugated section (332). The fixed section (331) is located on the bottom surface of the annular water distribution pipe (31), and the corrugated section (332) is located at the end of the fixed section (331) away from the annular water distribution pipe (31). The corrugated section (332) can change the water outlet direction.

4. The chemical production filtration and washing combined device according to claim 1, characterized in that, Also includes: A backflush pipe (8) is provided, and the backflush pipe (8) is provided through the vessel body (1). The backflush pipe (8) is provided inside the filter cover (4) and below the filter plate (5). Each backflush pipe (8) has an air inlet (81) and a number of air outlets (82). The air inlet (81) is located outside the vessel body (1). The number of air outlets (82) are provided at intervals on the pipe body of the backflush pipe (8). The air outlets (82) face the filter cover (4) or the filter plate (5). The air outlets (82) are used to spray gas onto the filter cover (4) and the filter plate (5) to blow off the solid material adhering to the filter cover (4) and the filter plate (5).

5. The chemical production filtration and washing combined device according to claim 1, characterized in that, The filter plate (5) includes: The mounting frames (51) are a plurality of each other, and the plurality of mounting frames (51) are arranged circumferentially inside the vessel body (1), with the side walls of adjacent mounting frames (51) abutting against each other. There are several filter screens, and each filter screen corresponds to a mounting frame (51). The filter screens are detachably mounted on the mounting frame (51).

6. The chemical production filtration and washing combined device according to claim 5, characterized in that, The filter screen is also covered with several layers of filter cloth in sequence.

7. The chemical production filtration and washing combined device according to claim 1, characterized in that, The filter cover (4) is rectangular, and at least one side of the outer wall of the filter cover (4) is equipped with a filter screen.

8. The chemical production filtration and washing combined device according to claim 1, characterized in that, The vessel body (1) includes: Cylinder (101); The base (102) is detachably disposed at the bottom of the vessel body (1), and a sealing ring is provided between the bottom surface of the cylinder (101) and the top surface of the base (102).

9. A chemical production filtration and washing combined device according to claim 2, characterized in that, The top of the annular water distribution pipe (31) is provided with a connecting frame (34), and the top of the connecting frame (34) is provided with a flange (35). The connecting frame (34) is connected to the top of the inner part of the vessel body (1) through the flange (35).

10. A chemical production filtration and washing combined device according to claim 8, characterized in that, A movable frame (9) is provided on the outer side of the bottom of the base (102).

Images