A mother liquor recovery filtration device

Abstract

This utility model relates to the technical field of filtration devices, and more particularly to a mother liquor recovery filtration device, comprising: a cross-shaped tube body; a cylinder body: horizontally slidably connected to the inner wall of the transverse section of the cross-shaped tube body via a slide rail, with uniformly distributed through grooves at the top of the cylinder body, filter plates fixedly connected to the bottom wall of the through grooves, and symmetrically distributed sliding grooves on the inner side walls of the through grooves, with a sludge cleaning mechanism and a discharge mechanism respectively provided on the inner walls of the two sets of sliding grooves; and a cleaning mechanism. This utility model has a reasonable structure, connecting the feed cylinder and the collection cylinder through the cross-shaped tube body. Negative pressure is used to filter the mother liquor through the filter plates in the cylinder body, and the filtrate enters the collection cylinder through the discharge groove. Filter mud is retained. When excessive filter mud is detected, the cylinder body can be slid to allow the filter plates to work alternately. The sludge cleaning mechanism scrapes the filter mud to the discharge section and discharges it through the discharge groove. Combined with water guns and air guns for deep cleaning, no machine downtime is required, improving production continuity and efficiency, reducing labor intensity, optimizing cleaning effect, and providing a stable and sealed structure for convenient maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of vacuum filtration devices, and in particular to a mother liquor recovery vacuum filtration device. Background Technology

[0002] In the fields of chemical engineering, pharmaceuticals, food processing, and environmental water treatment, mother liquor, as a concentrated system rich in effective components during the production process, can reduce raw material loss and improve resource utilization through efficient recovery. It can also reduce the environmental pressure caused by waste liquid discharge. Therefore, mother liquor recovery filtration technology has become a key link in achieving green, low-carbon, cost-reduction, and efficiency improvement in industrial production.

[0003] Currently, most existing mother liquor recovery filtration devices employ the principle of negative pressure filtration. The core structure typically includes a feed cylinder, a filter cylinder, and a collection cylinder connected in sequence. The mother liquor to be treated enters the device through the feed cylinder. A filter frame (or filter plate, filter membrane) is installed inside the filter cylinder as the core separation component. The filter cylinder is connected to a negative pressure device (such as a vacuum pump) via a suction pipe. The pressure difference created by the negative pressure drives the mother liquor through the filter frame, where solid impurities (filter mud, particles, etc.) are trapped. The filtered filtrate then enters the collection cylinder for recovery. To monitor the filtration effect, the device is usually equipped with a flow meter and two sets of pressure gauges (to monitor the pressure upstream and downstream of the filter cylinder, respectively). When the flow meter shows a significant decrease in flow rate, and the pressure difference between the two sets of pressure gauges exceeds a threshold, it is determined that excessive filter mud has accumulated on the surface of the filter frame, requiring cleaning to restore filtration efficiency.

[0004] However, existing devices have significant technical defects in practical applications, which restrict recycling efficiency and ease of operation: namely, cleaning the filter frame requires stopping the machine for disassembly, interrupting the continuity of production. Specifically, most existing filter frames are integrated into the filter cylinder by bolts, clips, and other fixing methods, and cannot be removed or operated separately while the device is running. When the filter mud accumulates to the point of affecting the filtration effect, the machine must be stopped, the filter cylinder cover plate must be removed, the filter frame fixing structure must be dismantled, the filter mud must be cleaned manually, and then reassembled, resulting in long production interruption time. Especially in large-scale continuous production scenarios, frequent shutdowns seriously reduce the overall work efficiency. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, the purpose of this utility model is to propose a mother liquor recovery and filtration device. This utility model has a reasonable structure, which connects the feed cylinder and the collection cylinder through a cross-shaped tube. The negative pressure is used to filter the mother liquor through the filter plate of the cylinder. The filtrate enters the collection cylinder through the discharge trough, and the filter mud is intercepted. When too much filter mud is detected, the cylinder can be slid to make the filter plates work alternately. The filter mud is scraped off by the mud cleaning mechanism to the discharge section and discharged through the discharge trough. With the help of water gun and air gun for deep cleaning, there is no need to stop the machine, which improves the continuity and efficiency of production, reduces labor intensity, optimizes the cleaning effect, and the structure is sealed and stable and easy to maintain.

[0007] To achieve the above objectives, this utility model proposes a mother liquor recovery filtration device, comprising:

[0008] Cross-shaped tube body: It is connected to the bottom of the feed cylinder and the top of the collection cylinder respectively through flanges, and the interior is connected. A tapered part is provided at the center of the bottom of the vertical section and is located inside the collection cylinder.

[0009] Cylinder: Horizontally slidable to the inner wall of the transverse section of the cross-shaped tube via a slide rail. The slide rail is fixed by a spring-loaded locking element engaging with a locking hole in a limiting guide groove on the inner wall of the transverse section.

[0010] The top of the cylinder is evenly provided with through grooves, which are connected to the interior of the vertical section. A filter plate is fixedly connected to the bottom wall of the through groove. Sliding grooves are symmetrically provided on the inner side wall of the through groove. The inner walls of the two sets of sliding grooves are respectively provided with a mud cleaning mechanism and a material discharge mechanism, which are horizontally slidably connected to the top of the filter plate.

[0011] Cleaning mechanism: installed on the surface of the vertical section.

[0012] In addition, the mother liquor recovery filtration device proposed in the application may also have the following additional technical features:

[0013] Specifically, the sludge cleaning mechanism has the same structure as the discharge mechanism. The sludge cleaning mechanism includes a slider, a sliding block, an opening groove, and a positioning groove.

[0014] The slider is horizontally slidably connected to the inner wall of the slide groove. The opening groove is opened at the top of the cylinder and communicates with the inside of the slide groove. The sliding block is slidably connected to the top of the slider and located inside the opening groove. One end of the sliding block is engaged and fixed with the inner wall of the positioning slot opened on the inner wall of the opening groove.

[0015] Specifically, the top of the slider of the sludge cleaning mechanism is provided with finger holes evenly distributed, and the bottom of the slider of the sludge cleaning mechanism is provided with an elastic scraper, which slides tightly against the top of the filter plate.

[0016] Specifically, the cleaning mechanism includes an air gun and a water gun, and mounting seats are symmetrically arranged on the surface of the vertical section. The air gun and the water gun are detachably mounted on two sets of mounting seats.

[0017] Specifically, the filter plate is an integrally formed structure, including a smooth plate part, a filter hole part and a discharge part arranged in sequence. The slider of the sludge cleaning mechanism is initially slidably connected to the smooth plate part, and the slider of the discharge mechanism is initially slidably connected to the discharge part. The tops of both sets of sliders are flush with the top of the cylinder.

[0018] Specifically, the through groove is adapted to the size of the filter plate, the bottom of the cylinder is evenly provided with a drain groove, and a discharge groove is provided on one side of the drain groove. The drain groove is corresponding to the position of the filter hole, the discharge groove is corresponding to the position of the discharge part, and one end of the discharge part is located in the discharge groove and is at the same level as the bottom of the cylinder.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. Improve production continuity: The sliding design of the cylinder enables the filter plates to work alternately, and there is no need to stop the machine during cleaning. This solves the problem of production interruption caused by the disassembly of filter frames in traditional equipment, and greatly improves work efficiency.

[0022] 2. Reduce labor intensity: The mud cleaning mechanism uses a slider and an elastic scraper to quickly remove filter mud. The finger hole design makes it easy to operate manually, reducing the tediousness of manual cleaning.

[0023] 3. Optimized cleaning effect: The reverse cleaning function of air gun and water gun can deeply clean the filter plate pores and avoid residual filter mud clogging; the structure of the discharge section and the discharge trough are matched to reduce filter mud residue;

[0024] 4. Strong structural stability: The flange connection between the cross tube body and the feed cylinder and collection cylinder is equipped with a sealing ring to ensure the sealing performance of the negative pressure environment; the elastic clamp and slide rail design ensure the reliability of cylinder sliding and positioning.

[0025] 5. Flexible adaptability: The design of multiple sets of channels and filter plates can meet different processing capacity requirements, and the cleaning mechanism is detachable, which is convenient for maintenance and replacement. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0027] Figure 1This is a schematic diagram of the structure of a mother liquor recovery and filtration device according to the present invention;

[0028] Figure 2 This is a schematic diagram of the sludge removal mechanism in a mother liquor recovery filtration device according to the present invention.

[0029] Figure 3 This is a schematic diagram of the filter plate structure in a mother liquor recovery filtration device according to the present invention;

[0030] Figure 4 This is a schematic diagram of the drain tank structure in a mother liquor recovery and filtration device according to the present invention.

[0031] Figure 5 This is a schematic diagram of the existing technology.

[0032] As shown in the figure:

[0033] 1. Cross-shaped tube body; 11. Flange; 10. Feed cylinder; 20. Filter cylinder; 30. Collection cylinder; 40. Pulling pipe; 50. Filter frame; 60. Flow meter; 70. Pressure gauge; 100. Vertical section; 200. Horizontal section; 12. Conical section;

[0034] 2. Cylinder body; 211. Slide rail; 21. Elastic clamp; 201. Limiting guide groove; 22. Through groove; 23. Filter plate; 231. Smooth plate section; 232. Filter hole section; 233. Discharge section; 24. Slide groove; 25. Drainage groove; 26. Discharge groove;

[0035] 3. Sludge removal mechanism; 4. Discharge mechanism; 5. Cleaning mechanism; 31. Slider; 32. Sliding block; 33. Opening groove; 34. Positioning groove; 311. Finger hole; 202. Handle; 111. Sealing ring. Detailed Implementation

[0036] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0037] The mother liquor recovery and filtration device of this utility model embodiment will be described below with reference to the accompanying drawings.

[0038] like Figures 1-5 As shown, an embodiment of the present invention provides a mother liquor recovery filtration device, comprising:

[0039] Cross tube body 1: It is connected to the bottom of the feed cylinder 10 and the top of the collection cylinder 30 through flange 11, and the interior is connected. A tapered part 12 is provided at the center of the bottom of its vertical section 100 and is located inside the collection cylinder 30.

[0040] Cylinder 2: Horizontally slidably connected to the inner wall of the transverse section 200 of the cross-shaped tube 1 via a slide rail 211. The slide rail 211 is engaged and fixed with the locking hole in the limiting guide groove 201 of the inner wall of the transverse section 200 via an elastic locking member 21.

[0041] The top of the cylinder 2 is evenly provided with through grooves 22, which are connected to the interior of the vertical section 100. The bottom wall of the through groove 22 is fixedly connected with a filter plate 23. The inner side wall of the through groove 22 is symmetrically provided with sliding grooves 24. The inner walls of the two sets of sliding grooves 24 are respectively provided with a mud cleaning mechanism 3 and a material discharge mechanism 4, which are horizontally slidably connected to the top of the filter plate 23.

[0042] Cleaning mechanism 5: installed on the surface of vertical section 100.

[0043] It should be noted that the principle of the existing technology is as follows: Existing mother liquor recovery filtration devices generally adopt the principle of negative pressure filtration. The core structure usually includes a feed cylinder 10, a filter cylinder 20, and a collection cylinder 30 connected in sequence. The mother liquor to be treated enters the device through the feed cylinder 10. The filter cylinder 20 is equipped with a filter frame 50 (or filter plate 23, filter membrane) as the core separation component. The filter cylinder 20 is connected to a negative pressure device (such as a vacuum pump) through a suction pipe 40. The pressure difference formed by the negative pressure drives the mother liquor through the filter frame 50. Solid impurities (filter mud, particles, etc.) are intercepted by the filter frame 50. The filtered filtrate enters the collection cylinder 30 to complete the recovery. In order to monitor the filtration effect, the device is usually equipped with a flow meter 60 and two sets of pressure gauges 70 (to monitor the pressure upstream and downstream of the filter cylinder 20 respectively). When the flow meter 60 shows a significant decrease in flow rate and the pressure difference between the two sets of pressure gauges 70 exceeds the threshold, it is determined that there is too much filter mud accumulation on the surface of the filter frame 50, and it needs to be cleaned to restore the filtration efficiency.

[0044] It should be noted that the length of the cylinder 2 described in this embodiment is adapted to the length of the transverse section 200, the end face of the cylinder 2 and the end face of the transverse section 200 are on the same horizontal plane, and a handle 202 is fixedly connected to the end face of the cylinder 2.

[0045] It should be noted that, in this embodiment, sealing rings 111 are provided at the connection between the flange 11 and the bottom of the feed cylinder 10 and at the connection between the flange 11 and the top of the collection cylinder 30.

[0046] It should be noted that the vertical section 100 described in this embodiment is provided with a suction pipe 40, and a pressure gauge 70 is provided on the surface of the suction pipe 40, and a flow detector 60 is provided at the bottom of the conical part 12.

[0047] It should be noted that the cross-shaped tube 1 described in this embodiment has a cross-shaped structure.

[0048] Specifically, this utility model has a reasonable structure. The feed cylinder 10 and the collection cylinder 30 are connected by a cross tube body 1. The mother liquor is filtered through the filter plate 23 of the cylinder body 2 by using negative pressure. The filtrate enters the collection cylinder 30 through the discharge trough 25. The filter mud is intercepted. When too much filter mud is detected, the cylinder body 2 can be slid to make the filter plate 23 work alternately. The filter mud is scraped off by the mud cleaning mechanism 3 to the discharge section 233 and discharged through the discharge trough 26. With the help of water gun and air gun for deep cleaning, there is no need to stop the machine, which improves the continuity and efficiency of production, reduces labor intensity, optimizes the cleaning effect, and the structure is sealed and stable and easy to maintain.

[0049] Its workflow is as follows:

[0050] Filtration stage: The mother liquor to be treated enters the vertical section 100 of the cross tube 1 from the feed cylinder 10. Under the action of the negative pressure device (connected by the suction pipe 40), solid-liquid separation is completed through the filter plate 23 (the core is the filter hole part 232) at the top of the cylinder 2. The filtrate flows into the collection cylinder 30 through the drain tank 25, and solid impurities (filter mud) are trapped on the surface of the filter plate 23.

[0051] Status monitoring: The pressure difference is monitored by the pressure gauge 70 on the suction pipe 40 and the feed cylinder 10, and the flow rate of the filtrate is monitored by the flow meter 60 on the cone section 12. When both show that there is too much filter mud accumulation, the cleaning procedure is started.

[0052] Online cleanup phase:

[0053] Pull the cylinder 2 to move the filter plate 23 to be cleaned out of the transverse section 200, and at the same time another set of filter plates 23 takes over the filtration to ensure continuous operation;

[0054] Push the slider 31 of the sludge cleaning mechanism 3, and the elastic scraper at the bottom slides back and forth along the filter plate 23 to scrape the filter mud to the discharge section 233;

[0055] Open the discharge mechanism 4 to expose the discharge section 233, and the filter mud is discharged through the discharge trough 26; finally, the filter plate 23 is thoroughly cleaned by rinsing with water gun and blowing with air gun through the cleaning mechanism 5.

[0056] In one embodiment of this utility model, such as Figure 2 As shown, the mud cleaning mechanism 3 and the discharge mechanism 4 have the same structure. The mud cleaning mechanism 3 includes a slider 31, a sliding block 32, an opening groove 33, and a positioning groove 34.

[0057] The slider 31 is horizontally slidably connected to the inner wall of the slide groove 24. The opening groove 33 is opened at the top of the cylinder 2 and is connected to the inside of the slide groove 24. The sliding block 32 is slidably connected to the top of the slider 31 and is located inside the opening groove 33. One end of the sliding block 32 is engaged and fixed with the inner wall of the positioning groove 34 opened in the inner wall of the opening groove 33.

[0058] Specifically, the structure and connection relationship of the mud cleaning mechanism 3 and the discharge mechanism 4 are further explained. When the mud cleaning mechanism 3 is in use, the sliding block 32 is pushed down to separate it from the outer positioning groove 34, and the slider 31 is pushed to move towards the discharge mechanism 4. The slider 31 drives the sliding block 32 to move out of the opening groove 33 and slide onto the filter plate 23. The filter mud on the filter plate 23 can be scraped off by moving the slider 31 back and forth through the bottom structure. When the discharge mechanism 4 is in use, the sliding block 32 is pushed down to separate it from the inner positioning groove 34, and the slider 31 is pushed to move away from the mud cleaning mechanism 3 and into the groove 24. After the discharge part 233 is exposed, the sliding block 32 is pushed up to connect with the outer positioning groove 34 to limit the slider 31, ensuring smooth discharge and good performance.

[0059] In one embodiment of this utility model, such as Figure 2 As shown, the top of the slider 31 of the mud cleaning mechanism 3 is evenly provided with finger holes 311, and the bottom of the slider 31 of the mud cleaning mechanism 3 is provided with an elastic scraper, which slides tightly against the top of the filter plate 23.

[0060] It should be noted that the elastic scraper described in this embodiment is not shown in the diagram.

[0061] Specifically, finger holes 311 are provided to facilitate manual operation of the slider 31 for translation, and elastic scrapers are provided to facilitate further scraping of filter mud from the surface of the filter plate 23.

[0062] In one embodiment of this utility model, such as Figure 1 As shown, the cleaning mechanism 5 includes an air gun and a water gun. Mounting seats are symmetrically arranged on the surface of the vertical section 100. The air gun and the water gun are detachably mounted on two sets of mounting seats.

[0063] Specifically, the structure and connection relationship of the cleaning mechanism 5 will be further explained. By cooperating with the air gun and the water gun, the filter plate 23 can be cleaned in reverse, and the effect is good.

[0064] In one embodiment of this utility model, such as Figure 3 As shown, the filter plate 23 is an integrally formed structure, including a smooth plate part 231, a filter hole part 232 and a discharge part 233 arranged in sequence. The slider 31 of the mud cleaning mechanism 3 is initially slidably connected to the smooth plate part 231, and the slider 31 of the discharge mechanism 4 is initially slidably connected to the discharge part 233. The tops of both sets of sliders 31 are flush with the top of the cylinder 2.

[0065] Specifically, the structure of the filter plate 23 is further explained. It adopts an integral molding structure, which is stable and has strong integrity. In the initial state, the slider 31 of the sludge cleaning mechanism 3 corresponds to and slides with the bare plate part 231, and the slider 31 of the discharge mechanism 4 corresponds to and slides with the discharge part 233. At the same time, the tops of the two sets of sliders 31 are flush with the top of the cylinder 2, which not only provides a stable support base for the sliders 31, but also avoids the mother liquor from stagnating in the gap between the sliders 31 and the cylinder 2, ensuring the smoothness of the filtration and subsequent cleaning process.

[0066] In one embodiment of this utility model, such as Figure 4 As shown, the through groove 22 is adapted to the size of the filter plate 23. The bottom of the cylinder 2 is evenly provided with a drain groove 25, and a discharge groove 26 is provided on one side of each drain groove 25. The drain groove 25 is corresponding to the position of the filter hole part 232, and the discharge groove 26 is corresponding to the position of the discharge part 233. One end of the discharge part 233 is located in the discharge groove 26 and is at the same level as the bottom of the cylinder 2.

[0067] Specifically, the drain trough 25 corresponds vertically to the filter hole section 232 and is used to discharge the filtrate filtered by the filter hole section 232. The discharge trough 26 corresponds vertically to the discharge section 233, and the lower end of the discharge section 233 extends into the discharge trough 26, so that the scraped filter mud slides into the discharge trough 26 and is discharged. The discharge section 233 is flush with the bottom of the cylinder 2 to avoid filter mud residue.

[0068] In summary, the mother liquor recovery and filtration device of this utility model has a reasonable structure. The feed cylinder 10 and the collection cylinder 30 are connected by a cross tube 1. The negative pressure is used to filter the mother liquor through the filter plate 23 of the cylinder 2. The filtrate enters the collection cylinder 30 through the discharge trough 25, and the filter mud is intercepted. When too much filter mud is detected, the cylinder 2 can be slid to make the filter plate 23 work alternately. The filter mud is scraped off by the mud cleaning mechanism 3 to the discharge section 233 and discharged through the discharge trough 26. With the help of water gun and air gun for deep cleaning, there is no need to stop the machine, which improves the continuity and efficiency of production, reduces labor intensity, optimizes the cleaning effect, and has a stable and sealed structure that is easy to maintain.

[0069] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A mother liquor recovery suction filtration apparatus characterized by, include: Cross tube body (1): It is connected to the bottom of the feed cylinder (10) and the top of the collection cylinder (30) respectively through the flange (11), and the interior is connected. A tapered part (12) is provided at the center of the bottom of its vertical section (100) and is located inside the collection cylinder (30). Cylinder (2): Horizontally slidably connected to the inner wall of the transverse section (200) of the cross tube (1) via a slide rail (211). The slide rail (211) is engaged and fixed with a retaining hole in the limiting guide groove (201) of the inner wall of the transverse section (200) via an elastic retainer (21). The top of the cylinder (2) is evenly provided with through grooves (22) and is connected to the interior of the vertical section (100). A filter plate (23) is fixedly connected to the bottom wall of the through groove (22). Sliding grooves (24) are symmetrically provided on the inner side wall of the through groove (22). The inner walls of the two sets of sliding grooves (24) are respectively provided with a mud cleaning mechanism (3) and a discharge mechanism (4), and are horizontally slidably connected to the top of the filter plate (23). Cleaning mechanism (5): installed on the surface of the vertical section (100).

2. The mother liquor recovery suction filtration device of claim 1, wherein, The sludge cleaning mechanism (3) has the same structure as the discharge mechanism (4). The sludge cleaning mechanism (3) includes a slider (31), a sliding block (32), an opening groove (33), and a positioning groove (34). The slider (31) is horizontally slidably connected to the inner wall of the groove (24). The opening groove (33) is opened on the top of the cylinder (2) and communicates with the inside of the groove (24). The sliding block (32) is slidably connected to the top of the slider (31) and located inside the opening groove (33). One end of the sliding block (32) is engaged and fixed with the inner wall of the positioning groove (34) opened on the inner wall of the opening groove (33).

3. The mother liquor recovery filtration device according to claim 2, characterized in that, The top of the slider (31) of the sludge cleaning mechanism (3) is evenly provided with finger holes (311), and the bottom of the slider (31) of the sludge cleaning mechanism (3) is provided with an elastic scraper, which slides tightly against the top of the filter plate (23).

4. The mother liquor recovery suction filtration device of claim 1, wherein, The cleaning mechanism (5) includes an air gun and a water gun. The vertical section (100) is symmetrically provided with mounting seats. The air gun and the water gun are detachably mounted on two sets of mounting seats.

5. The mother liquor recovery suction filtration device of claim 1, wherein, The filter plate (23) is an integrally formed structure, including a smooth plate part (231), a filter hole part (232) and a discharge part (233) arranged in sequence. The slider (31) of the mud cleaning mechanism (3) is initially slidably connected to the smooth plate part (231), and the slider (31) of the discharge mechanism (4) is initially slidably connected to the discharge part (233). The tops of both sets of sliders (31) are flush with the top of the cylinder (2).

6. The mother liquor recovery suction filter apparatus of claim 1, wherein, The through groove (22) is adapted to the size of the filter plate (23). The bottom of the cylinder (2) is evenly provided with a drain groove (25), and a discharge groove (26) is provided on one side of the drain groove (25). The drain groove (25) is corresponding to the filter hole part (232), and the discharge groove (26) is corresponding to the discharge part (233). One end of the discharge part (233) is located in the discharge groove (26) and is at the same level as the bottom of the cylinder (2).

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