A plate and frame filter press

Abstract

This application relates to the field of filter press technology, specifically to a plate and frame filter press. The plate and frame filter press includes a frame, filter plate assemblies, a pressing assembly, a feeding assembly, a discharging assembly, and a cleaning assembly. The feeding assembly is connected to a thrust plate and is used to introduce material into all filter chambers. The discharging assembly is connected to one or more filter plates to discharge filtrate. The cleaning assembly includes a movable frame, a movable unit, roller brushes, a washing spray pipe, and an air jet pipe. The movable frame is movably connected to the frame, and the movable unit is connected to the movable frame. The roller brushes, washing spray pipe, and air jet pipe are all connected to the movable unit. The movable unit drives the roller brushes, washing spray pipe, and air jet pipe to move vertically to clean one or two adjacent filter plates. This plate and frame filter press can drive the roller brushes, washing spray pipe, and air jet pipe to move via the movable unit, thereby cleaning each filter plate, improving cleaning efficiency and quality, and reducing equipment downtime for cleaning.

Description

Technical Field

[0001] This application relates to the field of filter press technology, and more specifically, to a plate and frame filter press. Background Technology

[0002] Currently, plate and frame filter presses are mostly cleaned manually. This method has problems such as low cleaning efficiency and poor cleaning quality, resulting in excessive downtime and increased operating costs. Summary of the Invention

[0003] This application provides a plate and frame filter press to improve the above-mentioned problems.

[0004] The present invention is as follows:

[0005] A plate and frame filter press includes a frame, a filter plate assembly, a filter pressing assembly, a feeding assembly, a discharging assembly, and a cleaning assembly;

[0006] The filter plate assembly includes multiple filter plates, all of which are slidably connected to the frame, and any two adjacent filter plates together form a filter chamber; the filter press assembly includes a pressure plate, a thrust plate, and a power unit connected to the frame; the pressure plate is slidably connected to the frame and driven by the power unit; all filter plates are located between the thrust plate and the pressure plate, and the pressure plate is used to ensure that the multiple filter plates fit tightly together under the driving action of the power unit; the feeding assembly is connected to the thrust plate and is used to introduce material into all filter chambers; the discharging assembly is connected to one or more filter plates to discharge the filtrate.

[0007] The cleaning assembly includes a movable frame, a movable unit, roller brushes, a spray pipe, and an air jet pipe; the movable frame is movably connected to the frame, the movable unit is connected to the movable frame, and the roller brushes, spray pipe, and air jet pipe are all connected to the movable unit; the movable unit is used to drive the roller brushes, spray pipe, and air jet pipe to move vertically to clean one or two adjacent filter plates.

[0008] In one embodiment of the present invention, along the sliding direction of the movable frame relative to the frame, the projection of the filter plate located in the upper half of the frame is located within the inner contour of the movable frame.

[0009] The movable frame includes a base, a first frame, and a second frame; the base is slidably connected to the frame, and the first and second frames are both vertically arranged and spaced apart along the sliding direction of the base relative to the frame to form a movable space together.

[0010] In one embodiment of the present invention, the movable unit includes a first guide rail, a first slider, a first driving unit, a second guide rail, a second driving unit, a second slider, a third driving unit, and a mounting bracket;

[0011] The first guide rail is connected to either the first or second frame and is located within the movable space. The first slider is slidably connected to the first guide rail in the vertical direction. The first drive unit is used to drive the first slider to slide vertically relative to the first guide rail. The second guide rail is slidably connected to the first slider in the vertical direction. The second drive unit is used to drive the second guide rail to slide vertically relative to the first slider. The second slider is slidably connected to the second guide rail in the vertical direction. The third drive unit is used to drive the second slider to slide vertically relative to the second guide rail. The mounting frame is connected to the second slider, and the roller brush, spray pipe, and air jet pipe are all connected to the mounting frame.

[0012] The mounting frame is used to move vertically under the driving action of the first drive unit, the second drive unit and the third drive unit, so that the roller brush, the spray pipe and the air jet pipe connected to the mounting frame can move to the position of cleaning the filter plate or move to the top of the movable frame.

[0013] In one embodiment of the present invention, the roller brush, the spray pipe, and the air jet pipe are all arranged horizontally; in the vertical direction, the roller brush is located below the spray pipe and the air jet pipe.

[0014] In one embodiment of the present invention, along the vertical direction, the roller brush, the spray pipe and the air jet pipe have at least a first position and a second position under the driving action of the first driving unit, the second driving unit and the third driving unit;

[0015] When the roller brush, spray pipe, and air jet pipe are in the first position, the height of the roller brush is higher than the top of the filter plate;

[0016] When the roller brush, spray pipe, and air jet pipe are in the second position, the height of the roller brush, spray pipe, and air jet pipe is lower than the bottom of the filter plate.

[0017] In one embodiment of the present invention, the roller brush component includes a mounting rod, two connecting rods, an elastic element, two roller brushes, and two roller brush motors;

[0018] The mounting rod is connected to the mounting bracket, and both connecting rods are rotatably connected to the mounting rod about its axis; the elastic element is used to give the two connecting rods a tendency to move in a direction away from each other;

[0019] Two roller brushes are connected to two connecting rods respectively, and two roller brush motors are used to drive the two roller brushes to rotate in order to wash the filter plate.

[0020] In one embodiment of the present invention, the plate and frame filter press includes a sliding unit connected to a movable frame to drive the movable frame to slide relative to the frame.

[0021] In one embodiment of the present invention, the plate and frame filter press further includes a positioning unit connected to the base. The positioning unit includes a limiting box, a limiting rod, a movable table, a lifting motor, two positioning blocks, and two elastic elements.

[0022] The limit box is connected to the base, and two guide grooves are opened at the upper end of the limit box. The two guide grooves are arranged at intervals along the direction in which the base slides relative to the frame.

[0023] The movable platform is vertically movable within the limit box, and the lifting motor is used to drive the movable platform to move up and down vertically.

[0024] The limiting rod is connected to the movable platform and is located between the two guide grooves, extending along the direction in which the base slides relative to the frame;

[0025] Both positioning blocks are connected to the movable table, and in the vertical direction, each positioning block slides in accordance with a guide groove;

[0026] Each positioning block is connected to the movable platform with an elastic element, which is used to make the positioning block tend to move from the guide groove in the direction of extending out of the limit box.

[0027] Each positioning block, together with the end of the adjacent limiting rod, forms the positioning part of the connecting rod for accommodating the filter plate.

[0028] In one embodiment of the present invention, the positioning block extends along the direction in which the base slides relative to the frame, and both sides of the positioning block are arc-shaped transition surfaces.

[0029] In one embodiment of the present invention, the limiting rod is a telescopic rod, and its telescopic direction is consistent with the direction in which the base slides relative to the frame.

[0030] The beneficial effects of this invention are:

[0031] This plate and frame filter press includes a frame, filter plate assemblies, a pressing assembly, a feeding assembly, a discharging assembly, and a cleaning assembly. The feeding assembly is connected to a thrust plate and is used to introduce material into all filter chambers. The discharging assembly is connected to one or more filter plates to discharge filtrate. The cleaning assembly includes a movable frame, a movable unit, roller brushes, a washing pipe, and an air jet pipe. The movable frame is movably connected to the frame, and the movable unit is connected to the movable frame. The roller brushes, washing pipe, and air jet pipe are all connected to the movable unit. The movable unit drives the roller brushes, washing pipe, and air jet pipe to move vertically to clean one or two adjacent filter plates. This plate and frame filter press can drive the roller brushes, washing pipe, and air jet pipe to move through the movable unit, thereby cleaning each filter plate, improving cleaning efficiency and quality, and reducing downtime for cleaning. This reduces operating costs and increases equipment efficiency. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a structural schematic diagram of the plate and frame filter press provided in this application;

[0034] Figure 2 A first-view structural schematic diagram of the cleaning component provided in this application;

[0035] Figure 3 A structural schematic diagram of the cleaning component provided in this application from a second perspective;

[0036] Figure 4 A schematic diagram of the roller brush, spray pipe and air jet pipe provided in this application when they are in the first position;

[0037] Figure 5 This is a schematic diagram of the roller brush, spray pipe, and air jet pipe provided in this application when they are cleaning the filter plate.

[0038] Icons: 200-Plate and frame filter press; 210-Frame; 220-Filter plate assembly; 230-Cleaning assembly; 221-Filter plate; 231-Mountable frame; 232-Mountable unit; 233-Roller brush; 234-Spray pipe; 235-Air jet pipe; 236-Base; 237-First frame; 238-Second frame; 239-Mountable space; 241-First guide rail; 242-First slider; 243-First drive unit; 244-Second guide rail; 245-Second drive unit; 246-Second slider; 248-Mounting frame; 261-Limit box; 262-Limit rod; 263-Mountable platform; 264-Lifting motor; 265-Positioning block; 266-Elastic element. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art, and is only for the convenience of describing this application and simplifying the description, and is 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, and therefore should not be construed as a limitation of this application. In addition, the terms "first," "second," "third," etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] In the description of the embodiments of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] Please refer to Figure 1-Figure 5 This embodiment provides a plate and frame filter press 200, including a frame 210, a filter plate assembly 220, a filter pressing assembly, a feeding assembly, a discharging assembly, and a cleaning assembly 230;

[0046] The filter plate assembly 220 includes multiple filter plates 221, all of which are slidably connected to the frame 210, and any two adjacent filter plates 221 together form a filter chamber. The filter press assembly includes a pressure plate, a thrust plate, and a power unit connected to the frame 210. The pressure plate is slidably connected to the frame 210 and is driven by the power unit. All the filter plates 221 are located between the thrust plate and the pressure plate, and the pressure plate is used to make the multiple filter plates 221 fit tightly together under the driving action of the power unit. The feeding assembly is connected to the thrust plate and is used to introduce material into all the filter chambers. The discharging assembly is connected to one or more of the filter plates 221 to discharge the filtrate.

[0047] The cleaning assembly 230 includes a movable frame 231, a movable unit 232, a roller brush 233, a spray pipe 234, and an air jet pipe 235. The movable frame 231 is movably connected to the frame 210, the movable unit 232 is connected to the movable frame 231, and the roller brush 233, the spray pipe 234, and the air jet pipe 235 are all connected to the movable unit 232. The movable unit 232 is used to drive the roller brush 233, the spray pipe 234, and the air jet pipe 235 to move in a vertical direction to clean one or two adjacent filter plates 221.

[0048] Please refer to Figure 1-Figure 5 The working principle of this plate and frame filter press 200 is as follows:

[0049] The plate and frame filter press 200 includes a frame 210, a filter plate assembly 220, a filter pressing assembly, a feeding assembly, a discharging assembly, and a cleaning assembly 230. The filter plate assembly 220 includes multiple filter plates 221, all of which are slidably connected to the frame 210, and any two adjacent filter plates 221 together form a filter chamber. The filter pressing assembly includes a pressure plate, a thrust plate, and a power unit connected to the frame 210. The pressure plate is slidably connected to the frame 210 and is driven by the power unit. All the filter plates 221 are located between the thrust plate and the pressure plate, and the pressure plate is used for driving the power unit. Under pressure, multiple filter plates 221 are tightly fitted together; the feeding assembly is connected to the thrust plate and is used to introduce material into all filter chambers; the discharge assembly is connected to one or more filter plates 221 to discharge the filtrate; thus, during operation, the plate and frame filter press 200 can drive the pressure plate to move through the power unit, thereby making multiple filter plates 221 tightly fitted together, thus forming a filter chamber between any two adjacent filter plates 221. After the feeding assembly introduces material into all filter chambers, under pressure, the filtrate is discharged from the discharge assembly and forms a filter cake in the filter chamber.

[0050] After prolonged use, material residue remains on each filter plate 221. To improve work efficiency, when cleaning is required after a certain period of use or for other reasons, the pressure plate can be reset, creating a gap between adjacent filter plates 221. The cleaning component 230 then moves sequentially to the gap between the two filter plates 221. The moving unit 232 drives the roller brush 233, the spray pipe 234, and the air jet pipe 235 to move. This allows the roller brush 233 to brush the filter plates 221, the spray pipe 234 to rinse the filter plates 221, and the air jet pipe 235 to blow clean the filter plates 221. This improves cleaning efficiency and quality, reduces downtime for cleaning, lowers operating costs, and increases equipment efficiency.

[0051] It should be noted that, firstly, in the process of cleaning the filter plate 221 by driving the roller brush 233, the spray pipe 234 and the air jet pipe 235 to move through the movable unit 232, the movable unit 232 drives the roller brush 233, the spray pipe 234 and the air jet pipe 235 to move in the vertical direction to clean the filter plate 221. Moreover, after cleaning two adjacent filter plates 221, the movable unit 232 can drive the roller brush 233, the spray pipe 234 and the air jet pipe 235 to move to the upper part of the movable frame 231 and move the movable frame 231 to the interval position between the other two filter plates 221, thereby repeating the aforementioned steps to complete the cleaning of all filter plates 221.

[0052] Secondly, during the cleaning process, the vertical arrangement of the roller brush 233, the spray pipe 234 and the air jet pipe 235 can be adjusted, or the working state of the roller brush 233, the spray pipe 234 and the air jet pipe 235 can be adjusted, so that the movable frame 231 can achieve one or more steps of brushing, rinsing or blowing the filter plate 221 during the vertical movement.

[0053] In addition, when setting up the roller brush 233, the spray pipe 234 and the air jet pipe 235, their structure can be adopted so that the roller brush 233, the spray pipe 234 and the air jet pipe 235 can clean the two adjacent filter plates 221.

[0054] Based on the above structural settings, please refer to Figure 1-Figure 5In this embodiment, to prevent interference between the movable frame 231 and the filter plate 221 on the frame 210 during the sliding of the movable frame 231 relative to the frame 210, the projections of the filter plate 221 located in the upper half of the frame 210 are all within the inner contour of the movable frame 231 along the sliding direction of the movable frame 231 relative to the frame 210. It should be noted that, based on this structure, as can be seen from the above, the mounting frame 248 can be driven to move by the movable unit 232, so that the roller brush 233, the spray pipe 234 and the air jet pipe 235 on the mounting frame 248 can move to the upper part of the movable frame 231, thereby avoiding motion interference between the roller brush 233, the spray pipe 234 and the air jet pipe 235 and the filter plate 221 during the translation of the movable frame 231.

[0055] Further, please refer to Figure 1-Figure 5 In this embodiment, the movable frame 231 includes a base 236, a first frame 237, and a second frame 238. The base 236 is slidably connected to the frame 210. The first frame 237 and the second frame 238 are both vertically arranged and spaced apart along the sliding direction of the base 236 relative to the frame 210 to form an active space 239. Moreover, when the first frame 237 and the second frame 238 are arranged, each of them includes a crossbar and two legs. The two legs are both vertically arranged and connected to both ends of the crossbar, which spans across the frame 210. The two legs are connected to the base 236 located on both sides of the frame 210. This allows the first frame 237 and the second frame 238 to slide relative to the frame 210 and avoids interference with all the filter plates 221.

[0056] Based on the above, please refer to Figure 1-Figure 5 In order to enable the roller brush 233, the spray pipe 234 and the air pipe 235 to move to the upper part of the movable frame 231 during the sliding of the movable frame 231 relative to the frame 210, so as to avoid interference with the filter plate 221 and at the same time, to enable the filter plate 221 to be thoroughly cleaned, the movable unit 232 includes a first guide rail 241, a first slider 242, a first drive unit 243, a second guide rail 244, a second drive unit 245, a second slider 246, a third drive unit and a mounting frame 248;

[0057] The first guide rail 241 is connected to either the first frame 237 or the second frame 238 and is located within the movable space 239. The first slider 242 is slidably connected to the first guide rail 241 in the vertical direction. The first drive unit 243 is used to drive the first slider 242 to slide vertically relative to the first guide rail 241. The second guide rail 244 is slidably connected to the first slider 242 in the vertical direction. The second drive unit 245 is used to drive the second guide rail 244 to slide vertically relative to the first slider 242. The second slider 246 is slidably connected to the second guide rail 244 in the vertical direction. The third drive unit is used to drive the second slider 246 to slide vertically relative to the second guide rail 244. The mounting bracket 248 is connected to the second slider 246, and the roller brush 233, the spray pipe 234, and the air jet pipe 235 are all connected to the mounting bracket 248.

[0058] The mounting frame 248 is used to move vertically under the driving action of the first driving unit 243, the second driving unit 245 and the third driving unit, so that the roller brush 233, the spray pipe 234 and the air jet pipe 235 connected to the mounting frame 248 move to the position of cleaning filter plate 221, or move to the top of the movable frame 231.

[0059] With the above-described structure, the first slider 242 can be driven by the first drive unit 243 to move relative to the first guide rail 241, thereby causing the first slider 242 to move relative to the filter plate 221 located on the upper part of the frame 210. Thus, the movement of the second drive unit 245 or the third drive unit can drive the second guide rail 244 or the second slider 246 to move, thereby driving the mounting frame 248 and the roller brush 233, the spray pipe 234 and the air jet pipe 235 connected to the mounting frame 248 to move, thereby cleaning the part of the filter plate 221 located on the upper part of the frame 210.

[0060] When cleaning the portion of the filter plate 221 located at the bottom of the frame 210, the position of the first slider 242 can be adjusted by the first drive unit 243, so that the first slider 242 moves to the bottom of the first guide rail 241. Then, the second guide rail 244 is driven to move downward relative to the first slider 242 by the second drive unit 245, and the second slider 246 is driven to move downward relative to the second guide rail 244 by the third drive unit. Through this driving method, the downward movement range of the roller brush 233, the spray pipe 234 and the air jet pipe 235 on the mounting frame 248 can cover the lower half of the filter plate 221.

[0061] It should be noted that, through the above structural arrangement, the roller brush 233, the spray pipe 234, and the air jet pipe 235 can, under the driving action of the first driving unit 243, the second driving unit 245, and the third driving unit, cause the second slider 246 to move relative to the second guide rail 244, the second guide rail 244 to move relative to the first slider 242, and the first slider 242 to move relative to the first guide rail 241. This expands the vertical travel of the roller brush 233, the spray pipe 234, and the air jet pipe 235, ensuring that their travel meets the requirements for comprehensive cleaning of the filter plate 221. At the same time, they can move upward to a position where they do not interfere with the filter plate 221, which facilitates the sliding of the mounting frame 248 on the frame 210, thereby improving the cleaning efficiency.

[0062] Moreover, this arrangement allows one or more of the first guide rail 241, the first slider 242, the first drive unit 243, the second guide rail 244, the second drive unit 245, the second slider 246, and the third drive unit to be located within the movable space 239. This optimizes the structure of the movable frame 231, simplifies the structure of the movable unit 232, and avoids the influence of the structure of the movable unit 232 on the filter plate 221.

[0063] It should also be noted that in this embodiment, the first drive unit 243, the second drive unit 245, and the third drive unit can all be linear motors in the prior art, and their driving principles will not be described in detail here. Moreover, in this embodiment, the lengths of the first guide rail 241 and the second guide rail 244 can be adjusted according to the required stroke. Furthermore, provided that the stroke meets the usage requirements, the third drive unit can be omitted. That is, the position adjustment can be achieved by relying on the movement of the first slider 242 relative to the first guide rail 241 and the movement of the second guide rail 244 relative to the first slider 242.

[0064] Further, please refer to Figure 1-Figure 5 In this embodiment, when setting the roller brush 233, the spray pipe 234 and the air pipe 235, the roller brush 233, the spray pipe 234 and the air pipe 235 are all arranged horizontally; in the vertical direction, the roller brush 233 is located below the spray pipe 234 and the air pipe 235.

[0065] Furthermore, along the vertical direction, the roller brush 233, the spray pipe 234, and the air jet pipe 235 are at least in a first position and a second position under the driving action of the first driving unit 243, the second driving unit 245, and the third driving unit; when the roller brush 233, the spray pipe 234, and the air jet pipe 235 are in the first position, the height of the roller brush 233 is higher than the top of the filter plate 221; when the roller brush 233, the spray pipe 234, and the air jet pipe 235 are in the second position, the height of the roller brush 233, the spray pipe 234, and the air jet pipe 235 is lower than the bottom of the filter plate 221. Thus, with this arrangement, the roller brush 233, the spray pipe 234, and the air jet pipe 235 can move between the first and second positions under the driving action of the movable unit 232 to clean the filter plate 221. During the sliding of the movable frame 231 relative to the frame 210, the roller brush 233, the spray pipe 234, and the air jet pipe 235 are located in the first position.

[0066] As described above, when the cleaning assembly cleans the filter plate 221, the movable frame 231 moves to the interval between two adjacent filter plates 221, and the roller brush 233, spray pipe 234, and air jet pipe 235 are driven by the movable unit 232 to clean the filter plate 221. Therefore, to improve the cleaning effect on the filter plate 221, the roller brush 233 includes a mounting rod, two connecting rods, an elastic element 266, two roller brushes, and two roller brush motors. The mounting rod is connected to the mounting frame 248, and the two connecting rods are rotatably connected to the mounting rod around its axis. The elastic element 266 is used to give the two connecting rods a tendency to move away from each other. The two roller brushes are respectively connected to the two connecting rods, and the two roller brush motors are used to drive the two roller brushes to rotate and brush the filter plate 221.

[0067] In the case of setting the roller brush component 233, the roller brush is used to brush the filter plate 221 by rotating. In order to improve the brushing effect, it is necessary to keep the roller brush in contact with the filter plate 221. Therefore, in order to keep the roller brush in contact with the filter plate 221, an elastic component 266 is provided so that the two roller brushes can move in opposite directions and thus keep in contact with the two adjacent filter plates 221.

[0068] During the movement of the movable frame 231 relative to the frame 210, a plate and frame filter press 200 is used, which includes a sliding unit. The sliding unit is connected to the movable frame 231 to drive the movable frame 231 to slide relative to the frame 210.

[0069] Further, please refer to Figure 1-Figure 5During the movement of the movable frame 231, in order to position the two filter plates 221 when the movable frame 231 moves to the interval between two adjacent filter plates 221 for cleaning, it is necessary to prevent the two filter plates 221 from moving relative to the movable frame 231 during the cleaning process. Therefore, the plate and frame filter press 200 also includes a positioning unit connected to the base 236. The positioning unit is used to position the filter plates 221, and both bases 236 are provided with positioning units, so that the two sides of the filter plates 221 can be positioned.

[0070] Specifically, the positioning unit includes a limiting box 261, a limiting rod 262, a movable platform 263, a lifting motor 264, two positioning blocks 265, and two elastic elements 266. The limiting box 261 is connected to the base 236, and two guide grooves are provided at the upper end of the limiting box 261. The two guide grooves are arranged at intervals along the sliding direction of the base 236 relative to the frame 210. The movable platform 263 is movably disposed in the limiting box 261 in the vertical direction, and the lifting motor 264 is used to drive the movable platform 263 to move up and down in the vertical direction. The limiting rod 262 is connected to the movable platform 263 and is located at the two... Between the guide grooves, and extending along the direction in which the base 236 slides relative to the frame 210; both positioning blocks 265 are connected to the movable table 263, and in the vertical direction, each positioning block 265 is slidably engaged with a guide groove; an elastic element 266 is connected at the connection between each positioning block 265 and the movable table 263, the elastic element 266 is used to make the positioning block 265 have a tendency to move from the guide groove toward the direction of extending out of the limiting box 261; wherein, each positioning block 265 and the end of the adjacent limiting rod 262 together form the positioning part of the connecting rod for accommodating the filter plate 221.

[0071] Therefore, through the above structural arrangement, when the positioning unit moves to the position corresponding to the two filter plates 221, the lifting motor 264 drives the movable platform 263 to rise, so that the positioning block 265 and the limiting rod 262 form a positioning part for accommodating the connecting rod of the filter plate 221, thereby limiting the movement of the filter plate 221. During this process, an opening is provided above the limiting box 261 for the limiting rod 262 to pass through, so that when positioning the filter plate 221, the limiting rod 262 and the positioning block 265 move synchronously. Moreover, during the movement of the movable frame 231, the height of the limiting rod 262 can be reduced to avoid motion interference with the filter plate 221.

[0072] Further, please refer to Figure 1-Figure 5In this embodiment, the positioning block 265 extends along the sliding direction of the base 236 relative to the frame 210, and both sides of the positioning block 265 are arc-shaped transition surfaces. Therefore, based on the elastic element 266 provided in the positioning block 265, when it abuts against the connecting rod of the filter plate 221, it can abut against the connecting rod through the arc-shaped surface, thereby facilitating the adjustment of the position of the filter plate 221 to avoid jamming. Moreover, in order to facilitate the adjustment of the spacing of the positioning part to adapt to the size of the connecting rod of the filter plate 221, the limiting rod 262 is a telescopic rod, and its telescopic direction is consistent with the sliding direction of the base 236 relative to the frame 210.

[0073] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A plate and frame filter press, characterized in that: The plate and frame filter press includes a frame, filter plate assembly, filter pressing assembly, feeding assembly, discharging assembly, and cleaning assembly; The filter plate assembly includes multiple filter plates, all of which are slidably connected to the frame, and any two adjacent filter plates together form a filter chamber. The filter press assembly includes a pressure plate, a thrust plate, and a power unit connected to the frame. The pressure plate is slidably connected to the frame and driven by the power unit. All the filter plates are located between the thrust plate and the pressure plate, and the pressure plate is used to ensure that the multiple filter plates fit tightly together under the driving action of the power unit. The feeding assembly is connected to the thrust plate and is used to introduce material into all the filter chambers. The discharging assembly is connected to one or more of the filter plates to discharge the filtrate. The cleaning assembly includes a movable frame, a movable unit, a roller brush, a spray pipe, and an air jet pipe; the movable frame is movably connected to the machine frame, the movable unit is connected to the movable frame, and the roller brush, the spray pipe, and the air jet pipe are all connected to the movable unit; the movable unit is used to drive the roller brush, the spray pipe, and the air jet pipe to move vertically to clean one or two adjacent filter plates; The movable frame includes a base, a first frame, and a second frame; the base is slidably connected to the frame, and the first frame and the second frame are both vertically arranged and spaced apart along the sliding direction of the base relative to the frame to form an active space together; The plate and frame filter press also includes a positioning unit connected to the base. The positioning unit includes a limiting box, a limiting rod, a movable table, a lifting motor, two positioning blocks, and two elastic elements. The limiting box is connected to the base, and two guide grooves are provided at the upper end of the limiting box. The two guide grooves are arranged at intervals along the direction in which the base slides relative to the frame. The movable platform is movably disposed within the limiting box in the vertical direction, and the lifting motor is used to drive the movable platform to move up and down in the vertical direction; The limiting rod is connected to the movable platform and is located between the two guide grooves, and extends along the direction in which the base slides relative to the frame; Both positioning blocks are connected to the movable platform, and each positioning block slides in a corresponding guide groove along the vertical direction; Each of the positioning blocks is connected to the movable platform with an elastic element, which is used to make the positioning block tend to move from the guide groove in the direction of extending out of the limiting box; Each of the positioning blocks, together with the end of the adjacent limiting rod, forms a positioning part for accommodating the connecting rod of the filter plate.

2. The plate and frame filter press according to claim 1, characterized in that: Along the sliding direction of the movable frame relative to the machine frame, the projections of the filter plates located on the upper half of the machine frame are all within the inner contour of the movable frame.

3. The plate and frame filter press according to claim 2, characterized in that: The movable unit includes a first guide rail, a first slider, a first drive unit, a second guide rail, a second drive unit, a second slider, a third drive unit, and a mounting bracket; The first guide rail is connected to the first frame or the second frame and is located within the active space. The first slider is slidably connected to the first guide rail in the vertical direction. The first driving unit is used to drive the first slider to slide vertically relative to the first guide rail. The second guide rail is slidably connected to the first slider in the vertical direction. The second driving unit is used to drive the second guide rail to slide vertically relative to the first slider. The second slider is slidably connected to the second guide rail in the vertical direction. The third driving unit is used to drive the second slider to slide vertically relative to the second guide rail. The mounting bracket is connected to the second slider, and the roller brush, the spray pipe, and the air jet pipe are all connected to the mounting bracket. The mounting frame is used to move vertically under the driving action of the first driving unit, the second driving unit and the third driving unit, so that the roller brush, the spray pipe and the air jet pipe connected to the mounting frame move to the position for cleaning the filter plate, or move to the top of the movable frame.

4. The plate and frame filter press according to claim 3, characterized in that: The roller brush, the spray pipe, and the air jet pipe are all arranged horizontally; in the vertical direction, the roller brush is located below the spray pipe and the air jet pipe.

5. The plate and frame filter press according to claim 4, characterized in that: Along the vertical direction, the roller brush, the spray pipe, and the air jet pipe have at least a first position and a second position under the driving action of the first driving unit, the second driving unit, and the third driving unit; When the roller brush, the spray pipe, and the air jet pipe are in the first position, the height of the roller brush is higher than the top of the filter plate; When the roller brush, the spray pipe, and the air jet pipe are in the second position, the height of the roller brush, the spray pipe, and the air jet pipe is all lower than the bottom end of the filter plate.

6. The plate and frame filter press according to claim 5, characterized in that: The roller brush component includes a mounting rod, two connecting rods, an elastic element, two roller brushes, and two roller brush motors; The mounting rod is connected to the mounting bracket, and both connecting rods are rotatably connected to the mounting rod about its axis; the elastic element is used to give the two connecting rods a tendency to move in a direction away from each other; The two roller brushes are respectively connected to the two connecting rods, and the two roller brush motors are respectively used to drive the two roller brushes to rotate in order to brush the filter plate.

7. The plate and frame filter press according to any one of claims 1-5, characterized in that: The plate and frame filter press includes a sliding unit connected to the movable frame to drive the movable frame to slide relative to the frame.

8. The plate and frame filter press according to claim 1, characterized in that: Extending along the direction in which the base slides relative to the frame, both sides of the positioning block have arc-shaped transition surfaces.

9. The plate and frame filter press according to claim 1, characterized in that: The limiting rod is a telescopic rod, and its extension and retraction direction is consistent with the direction in which the base slides relative to the frame.

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