Filter press for preparing medical intermediates

Abstract

The utility model discloses a filter press for preparing medical intermediates, which relates to the technical field of medicinal material processing and comprises two supports, reset components are arranged on two sides of the two supports, a plurality of filter plates are arranged between the two supports, and the plurality of filter plates are positioned between the two reset components; one of the two brackets is fixedly connected with an extrusion mechanism, the middle of the other bracket is fixedly connected with a feeding pipe, and four corners of the other bracket are fixedly connected with a water supply pipe and a cleaning pipe respectively; after preliminary filter pressing is conducted on medicinal materials, the water supply pipe is opened through the valve, clear water in the water supply pipe flows into the cavity between the two filter plate bodies through the multiple water passing openings and the drainage grooves, then is mixed with the medicinal materials in the cavity and flows into the inner cavity through the filter holes, and the medicinal materials can be washed and cleaned in the flowing process of the clear water; the impurity content of the medicinal materials is further reduced, and the quality of the medicinal materials is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medicinal material processing, in particular to a filter press for preparing pharmaceutical intermediates. Background Technique

[0002] Medicinal materials are commonly used substances for pharmaceutical intermediates. Medicinal materials refer to raw materials available for pharmaceutical use, usually natural plants, animals, minerals, etc. that are either unprocessed or only simply processed. After a series of processes such as processing, extraction, and processing, medicinal materials can be made into traditional Chinese medicine decoction pieces, traditional Chinese patent medicines, the production of western medicines, or used in the production of cosmetics. Medicinal materials act directly on the human body, so their processing standards are very high.

[0003] During the manufacturing process of medicinal materials, multiple processing steps are required. Among them, the filtration work after washing the medicinal materials is particularly important, which not only affects the cleanliness of the medicinal materials but also affects their humidity. Medicinal materials with a large amount of moisture will also affect subsequent processing. Chinese Patent Publication No. CN 211585386 U discloses a plate and frame filter press for pharmaceutical use, including a support. On both sides of the top surface of the support, two symmetrically arranged support plates are provided. Between every two adjacent pressing plates and the filter press box body, a receiving cavity for placing the material to be filter-pressed is formed. At the bottom between two adjacent pressing plates, a filter screen is connected. On one side of the filter press box body, a driving mechanism for driving the pressing plate to move is installed. On the side of the sliding block away from the driving mechanism, a telescopic rod is embedded. The upper end of the feed pipe is connected with a feeding device;

[0004] For the above-mentioned plate and frame filter press for pharmaceutical use, the driving mechanism is used to squeeze multiple filter plates to carry out the filter pressing work of medicinal materials. After the above-mentioned plate and frame filter press for pharmaceutical use filter-presses the medicinal materials, the obtained medicinal material cake is directly taken out. However, during the processing of medicinal materials, there are still a large number of impurities with extremely small volumes mixed in. These impurities are mixed with the moisture in the medicinal materials. After the medicinal materials are filter-pressed, there will still be some impurities mixed in the medicinal materials, which will affect the quality of the medicinal materials. The above-mentioned plate and frame filter press for pharmaceutical use cannot further wash the medicinal materials during the filter pressing process, resulting in the inability to improve the quality of the medicinal materials. Content of the Utility Model

[0005] The purpose of the utility model is to provide a filter press for preparing pharmaceutical intermediates. After the medicinal materials are filter-pressed by using an extrusion mechanism in cooperation with multiple filter plates, the clear water in the water supply pipe can flow into the medicinal materials through the water passing ports of the filter plates to further wash the medicinal materials, remove most of the impurities in the medicinal materials, and the sewage after washing is discharged through the drain pipe, so as to solve the technical problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A filter press for preparing pharmaceutical intermediates, comprising two brackets, both sides of the two brackets are provided with reset components, a plurality of filter plates are provided between the two brackets, and the plurality of filter plates are located between the two reset components; one of the two brackets is fixedly connected with an extrusion mechanism, the middle of the other bracket is fixedly connected with a feed pipe, and the four corners are respectively fixedly connected with a water supply pipe and a cleaning pipe; a material cart is provided below the plurality of filter plates;

[0008] The filter plate comprises a filter plate body, both sides of which are provided with grooves; a feed port is provided in the middle of the filter plate body, and the feed port is connected with a feed pipe; adjacent triangles in the four corners of the filter plate body are provided with water ports penetrating the filter plate body, and another corner is provided with a cleaning port; a plurality of drainage grooves are provided on both sides of the filter plate body, and the plurality of drainage grooves respectively correspond to the positions of the plurality of water ports;

[0009] An inner cavity is provided inside the filter plate body, which is connected to the cleaning port; a drain pipe is fixedly connected to the bottom of one side of the filter plate body, which is connected to the inner cavity; ear plates are welded to the upper ends of both sides of the filter plate body; a water tank is provided below one end of the drain pipe away from the filter plate body.

[0010] As a further technical solution of the utility model, the reset assembly includes a side plate, both ends of which are respectively welded to two brackets, and the bottom of the ear plate is fitted with the top of the side plate; two support columns are symmetrically welded on one side of the side plate away from the filter plate body, and a belt is provided between the two support columns; the two ends of the two support columns are respectively welded to the two outer shells, and the two ends of the belt extend to the inner sides of the two outer shells respectively.

[0011] As a further technical solution of the utility model, the support column located on the upper layer of the two support columns is slidably connected to the toggle device; the inner sides of both ends of belt one are transmission-connected with rotating shafts, and the two rotating shafts are rotationally connected to the inner walls of the two outer shells through bearing seats respectively, one of the rotating shafts is fixedly connected with pulley one, and pulley two is provided below pulley one, and pulley two is transmission-connected to pulley one through belt two; pulley two is fixedly connected to the output shaft of the motor, and the motor is located inside the outer shell.

[0012] As a further technical solution of the present utility model, the toggle device includes a slide seat, the upper end of the slide seat is slidably connected to the support column located on the upper layer of the two support columns, and the lower end is fixedly connected to the belt; one end of the top of the slide seat is fixedly connected to a connecting shaft, and both ends of the connecting shaft are rotationally connected to a rotating toggle piece; a torsion spring is sleeved on the outer side of the connecting shaft, one end of the torsion spring is fixedly connected to the slide seat, and the other end is fixedly connected to the rotating toggle piece; one end of the top of the slide seat away from the rotating toggle piece is fixedly connected to a fixed toggle piece.

[0013] As a further technical solution of the present utility model, the extrusion mechanism includes two hydraulic cylinders, and both hydraulic cylinders are in transmission connection with a hydraulic station; the telescopic rods of both hydraulic stations are fixedly connected to a push plate; the side of the push plate away from the hydraulic cylinder is fixedly connected to the middle of a moving plate, and a plurality of rollers are installed at the upper ends of both sides of the moving plate, and the plurality of rollers are respectively movably connected to the tops of two side plates.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, first, the hydraulic station controls the two hydraulic cylinders to drive the push plate to move towards the filter plate main body. The push plate synchronously drives the moving plate to move. When the moving plate moves, the plurality of rollers on both sides of it roll along the tops of the side plates. The plurality of rollers play a role in supporting the moving plate and at the same time make the moving plate move more stably; the moving plate pushes the filter plate main body until the plurality of filter plate main bodies are tightly attached to each other. At this time, cavities for stacking medicinal materials will be formed between adjacent filter plate main bodies; then the medicinal materials flow into the cavities between the plurality of filter plate main bodies through the feed pipe and the material passing port. As the medicinal herbs stacked in the cavity increase, the pressure in the cavity gradually increases. The surface of the filter plate main body is evenly provided with a plurality of filter holes and a plurality of convex cylindrical points. The convex cylindrical points can increase the water conduction area of the filter plate main body, enabling the water to move in any direction, shortening the water flow path, and thus increasing the filtration speed; the water enters the inner cavity through the filter holes and then flows into the water tank through the drain pipe, completing the pressure filtration work of the medicinal materials.

[0016] 2. In the present utility model, after the preliminary pressure filtration of the medicinal materials, the water supply pipe is opened through a valve. The clear water in the water supply pipe flows into the cavity between the two filter plate main bodies through a plurality of water passing ports and the drainage grooves, and then mixes with the medicinal materials in the cavity and flows into the inner cavity through the filter holes. During the flowing process of the clear water, it can wash and clean the medicinal materials, wash away the impurities in the medicinal materials, further reduce the impurity content of the medicinal materials, and improve the quality of the medicinal materials; after multiple pressure filtration operations, a certain amount of impurities will be stored in the inner cavity. When the filter press is in an idle state, the cleaning pipe is opened through a valve, and the clear water in the cleaning pipe will flow into the inner cavity through the cleaning port to wash the inner cavity and flush out the impurities in the inner cavity to prevent the impurities from accumulating and blocking the inner cavity.

[0017] 3. According to the utility model, after the medicinal material filtration is completed, the hydraulic cylinder drives the movable plate to reset, and the movable plate no longer squeezes the multiple filter plate bodies; then the motor drives the belt to move, and the belt synchronously drives the toggle device to move; when the rotating toggle piece moves to the ear plate, the slide seat continues to move, and the ear plate squeezes the rotating toggle piece to make the rotating toggle piece rotate with the connecting shaft as the center of the circle until the rotating toggle piece passes over the ear plate, and the rotating toggle piece is reset again under the action of the elastic force of the torsion spring; the motor drives the rotating toggle piece to move in the opposite direction through the belt, and the bottom of the rotating toggle piece is fitted and fixed to the slide seat, and at this time, the rotating toggle piece cooperates with the fixed toggle piece to drive the ear plate to move, and then drive the filter plate body to move, so that the two adjacent filter plate bodies are separated, and at this time the medicinal material cake located between the two filter plate bodies falls into the material cart under the action of gravity, and the staff does not need to manually move the filter plate body, thereby reducing the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0019] Figure 2 This utility model Figure 1 Top view of the .

[0020] Figure 3 This utility model Figure 1 Schematic diagram of part of the structure.

[0021] Figure 4 This utility model Figure 3 Another perspective of the picture.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the reset component of the utility model.

[0023] Figure 6 This utility model Figure 5 main view.

[0024] Figure 7 It is a partial structural schematic diagram of the toggle device of the utility model.

[0025] Figure 8 This utility model Figure 5 Schematic diagram of part of the structure.

[0026] Figure 9 It is a three-dimensional structural schematic diagram of the extrusion mechanism of the utility model.

[0027] Figure 10 It is a three-dimensional structural schematic diagram of the filter plate of the utility model.

[0028] Figure 11 This utility model Figure 10 Side view of.

[0029] Figure 12 This utility model Figure 11 AA section view.

[0030] Figure 13 This utility model Figure 3 Schematic diagram of part of the structure.

[0031] Figure 14 This utility model Figure 13 main view.

[0032] Figure 15 This utility model Figure 8 A partial enlarged view of .

[0033] In the figure: 1-filter plate, 2-extrusion mechanism, 3-reset assembly, 4-feed pipe, 5-water supply pipe, 6-cleaning pipe, 7-water tank, 8-feed cart, 9-bracket;

[0034] 11-filter plate body, 12-ear plate, 13-feeding port, 14-drain pipe, 15-cleaning port, 16-water port, 17-drainage groove, 18-inner cavity, 21-hydraulic cylinder, 22-push plate, 23-moving plate, 24-roller, 25-hydraulic station, 31-side plate, 32-support column, 33-belt 1, 34-shifting device, 35-housing, 36-rotating shaft, 37-pulley 1, 38-pulley 2, 39-motor, 30-belt 2;

[0035] 341 - sliding seat, 342 - toggle member, 343 - connecting shaft, 344 - torsion spring, 345 - fixed toggle member. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] See also Figure 1-15 In the embodiment of the utility model, two brackets 9 are included, and reset components 3 are provided on both sides of the two brackets 9. Multiple filter plates 1 are provided between the two brackets 9, and the multiple filter plates 1 are located between the two reset components 3; one of the two brackets 9 is fixedly connected to the extrusion mechanism 2, and the middle of the other bracket 9 is fixedly connected to the feed pipe 4, and the four corners are respectively fixedly connected to the water supply pipe 5 and the cleaning pipe 6; a material cart 8 is provided below the multiple filter plates 1;

[0038] The described filter plate 1 includes a filter plate body 11, and grooves are provided on both sides of the filter plate body 11; a material passing port 13 is provided in the middle of the filter plate body 11, and the material passing port 13 is communicated with the feed pipe 4; water passing ports 16 penetrating through the filter plate body 11 are provided at three adjacent corners among the four corners of the filter plate body 11, and a cleaning port 15 is provided at the other corner; a plurality of drainage grooves 17 are provided on both sides of the filter plate body 11, and the positions of the plurality of drainage grooves 17 respectively correspond to the positions of the plurality of water passing ports 16;

[0039] An inner cavity 18 is provided inside the filter plate body 11, and the inner cavity 18 is communicated with the cleaning port 15; a drain pipe 14 is fixedly connected to the bottom of one side of the filter plate body 11, and the drain pipe 14 is communicated with the inner cavity 18; ear plates 12 are welded to the upper ends of both sides of the filter plate body 11; a water tank 7 is provided below the end of the drain pipe 14 far from the filter plate body 11.

[0040] By adopting the above technical solution, first, the hydraulic station 25 controls the two hydraulic cylinders 21 to drive the push plate 22 to move towards the filter plate body 11. The push plate 22 synchronously drives the moving plate 23 to move. When the moving plate 23 moves, the multiple rollers 24 on both sides thereof roll along the top of the side plate 31. The multiple rollers 24 play a role in supporting the moving plate 23 and at the same time make the moving plate 23 move more stably; the moving plate 23 pushes the filter plate body 11 until the multiple filter plate bodies 11 are closely attached to each other. At this time, a cavity for stacking medicinal materials will be formed between the adjacent filter plate bodies 11; then the medicinal materials flow into the cavity between the multiple filter plate bodies 11 through the feed pipe 4 and the material passing port 13. As the medicinal herbs stacked in the cavity increase, the pressure in the cavity gradually increases. The surface of the filter plate body 11 is evenly provided with a plurality of filter holes and a plurality of convex cylindrical points. The convex cylindrical points can increase the water conduction area of the filter plate body 11, enabling the water to move in any direction, shortening the water flow path, and thus increasing the filtration speed; the water enters the inner cavity 18 through the filter holes and then flows into the water tank 7 through the drain pipe 14, completing the pressure filtration work of the medicinal materials.

[0041] In this embodiment, the described reset assembly 3 includes a side plate 31. The two ends of the side plate 31 are respectively welded to the two brackets 9, and the bottom of the ear plate 12 is attached to the top of the side plate 31; two support columns 32 are symmetrically welded to the side of the side plate 31 far from the filter plate body 11. A first belt 33 is provided between the two support columns 32; the two ends of the two support columns 32 are respectively welded to the two outer shells 35, and the two ends of the first belt 33 respectively extend to the inner sides of the two outer shells 35;

[0042] The support column 32 located on the upper layer of the two support columns 32 is slidably connected to the toggle device 34; the inner sides of both ends of the belt 1 33 are transmission-connected with rotating shafts 36, and the two rotating shafts 36 are rotationally connected to the inner walls of the two outer shells 35 through bearing seats respectively, one of the rotating shafts 36 is fixedly connected with a pulley 1 37, and a pulley 2 38 is provided below the pulley 1 37, and the pulley 2 38 is transmission-connected to the pulley 1 37 through the belt 2 30; the pulley 2 38 is fixedly connected to the output shaft of the motor 39, and the motor 39 is located inside the outer shell 35.

[0043] By adopting the above technical solution, after the preliminary pressure filtration of the medicinal materials, the water supply pipe 5 is opened through the valve, and the clean water in the water supply pipe 5 flows into the cavity between the two filter plate bodies 11 through multiple water ports 16 and drainage grooves 17, and then mixes with the medicinal materials in the cavity, and flows into the inner cavity 18 through the filter holes. During the flow of clean water, the medicinal materials can be flushed and cleaned, and impurities in the medicinal materials can be washed away, thereby further reducing the impurity content of the medicinal materials and improving the quality of the medicinal materials. After multiple pressure filtration operations, a certain amount of impurities will remain in the inner cavity 18. When the filter press is idle, the cleaning pipe 6 is opened through the valve, and the clean water in the cleaning pipe 6 will flow into the inner cavity 18 through the cleaning port 15 to flush the inner cavity 18, flush the impurities in the inner cavity 18 out of the inner cavity 18, and prevent the impurities from accumulating in the inner cavity 18 and clogging the inner cavity 18.

[0044] In this embodiment, the toggle device 34 comprises a slide seat 341, the upper end of which is slidably connected to the upper support column 32 of the two support columns 32, and the lower end is fixedly connected to the belt 1 33; a connecting shaft 343 is fixedly connected to the top end of the slide seat 341, and both ends of the connecting shaft 343 are rotatably connected to the rotating toggle member 342; a torsion spring 344 is sleeved on the outer side of the connecting shaft 343, one end of the torsion spring 344 is fixedly connected to the slide seat 341, and the other end is fixedly connected to the rotating toggle member 342; a fixed toggle member 345 is fixedly connected to the top end of the slide seat 341 away from the rotating toggle member 342;

[0045] The extrusion mechanism 2 includes two hydraulic cylinders 21, and the two hydraulic cylinders 21 are both transmission-connected to the hydraulic station 25; the telescopic rods of the two hydraulic stations 25 are fixedly connected to the push plate 22; the side of the push plate 22 away from the hydraulic cylinder 21 is fixedly connected to the middle of the movable plate 23, and multiple rollers 24 are installed on the upper ends of both sides of the movable plate 23, and the multiple rollers 24 are movably connected to the tops of the two side plates 31 respectively.

[0046] By adopting the above technical solution, after the medicinal material filtration is completed, the hydraulic cylinder 21 drives the movable plate 23 to reset, and the movable plate 23 no longer squeezes the multiple filter plate bodies 11; then the motor 39 drives the belt 1 33 to move, and the belt 1 33 synchronously drives the toggle device 34 to move; when the rotating toggle member 342 moves to the ear plate 12, the slide 341 continues to move, and the ear plate 12 squeezes the rotating toggle member 342 to allow the rotating toggle member 342 to rotate with the connecting shaft 343 as the center of the circle until the rotating toggle member 342 passes over the ear plate 12, and at this time the rotating toggle member 342 is torsion spring The motor 39 drives the rotating toggle member 342 to move in the opposite direction through the belt 1 33, and the bottom of the rotating toggle member 342 is fixed to the slide seat 341. At this time, the rotating toggle member 342 cooperates with the fixed toggle member 345 to drive the ear plate 12 to move, and then drive the filter plate body 11 to move, so that the two adjacent filter plate bodies 11 are separated. At this time, the medicinal material cake located between the two filter plate bodies 11 falls into the material cart 8 under the action of gravity, and the staff does not need to manually move the filter plate body 11, thereby reducing the workload of the staff.

[0047] The working principle of the utility model is as follows: first, the hydraulic station 25 controls the two hydraulic cylinders 21 to drive the push plates 22 to move in the direction of the filter plate body 11, and the push plates 22 synchronously drive the moving plates 23 to move. When the moving plates 23 move, multiple rollers 24 on both sides thereof roll along the top of the side plates 31, and the multiple rollers 24 play a role in supporting the moving plates 23, and at the same time make the moving plates 23 more stable when moving; the moving plates 23 push the filter plate bodies 11 until the multiple filter plate bodies 11 are closely attached to each other, and at this time, a medicinal material supply will be formed between the adjacent filter plate bodies 11 The accumulated cavity; then the medicinal materials flow into the cavity between the plurality of filter plate bodies 11 through the feed pipe 4 and the feed port 13. As the accumulated herbs in the cavity increase, the pressure in the cavity gradually increases. The surface of the filter plate body 11 is evenly provided with a plurality of filter holes and a plurality of convex cylindrical points. The convex cylindrical points can increase the water conduction area of ​​the filter plate body 11, so that the water can move in any direction, shorten the water flow, and thus increase the filtration speed; the water enters the inner cavity 18 through the filter holes, and then flows into the water tank 7 through the drain pipe 14, completing the pressure filtration of the medicinal materials;

[0048] After the medicinal materials are initially filtered, the water supply pipe 5 is opened through the valve, and the clean water in the water supply pipe 5 flows into the cavity between the two filter plate bodies 11 through multiple water ports 16 and drainage grooves 17, and then mixes with the medicinal materials in the cavity, and flows into the inner cavity 18 through the filter holes. During the flow of clean water, the medicinal materials can be flushed and cleaned, and impurities in the medicinal materials can be washed away, thereby further reducing the impurity content of the medicinal materials and improving the quality of the medicinal materials. After multiple filter presses, a certain amount of impurities will remain in the inner cavity 18. When the filter press is idle, the cleaning pipe 6 is opened through the valve, and the clean water in the cleaning pipe 6 will flow into the inner cavity 18 through the cleaning port 15 to flush the inner cavity 18, flush the impurities in the inner cavity 18 out of the inner cavity 18, and prevent the impurities from accumulating in the inner cavity 18 and blocking the inner cavity 18.

[0049] After the medicinal material filtration is completed, the hydraulic cylinder 21 drives the movable plate 23 to reset, and the movable plate 23 no longer squeezes the multiple filter plate bodies 11; then the motor 39 drives the belt 1 33 to move, and the belt 1 33 synchronously drives the toggle device 34 to move; when the rotating toggle member 342 moves to the ear plate 12, the slide 341 continues to move, and the ear plate 12 squeezes the rotating toggle member 342 to make the rotating toggle member 342 rotate around the connecting shaft 343 as the center of the circle until the rotating toggle member 342 passes over the ear plate 12. At this time, the rotating toggle member 342 is torsion spring 344 under the elastic force of the torsion spring 344. The motor 39 drives the rotating toggle member 342 to move in the opposite direction through the belt 1 33, and the bottom of the rotating toggle member 342 is fixed to the slide seat 341. At this time, the rotating toggle member 342 cooperates with the fixed toggle member 345 to drive the ear plate 12 to move, and then drive the filter plate body 11 to move, so that the two adjacent filter plate bodies 11 are separated. At this time, the medicinal material cake located between the two filter plate bodies 11 falls into the material cart 8 under the action of gravity, and the staff does not need to manually move the filter plate body 11, thereby reducing the workload of the staff.

[0050] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A filter press for preparing pharmaceutical intermediates, characterized in that: The invention comprises two brackets (9), both sides of the two brackets (9) are provided with a reset assembly (3), a plurality of filter plates (1) are provided between the two brackets (9), and the plurality of filter plates (1) are located between the two reset assemblies (3); one of the two brackets (9) is fixedly connected to an extrusion mechanism (2), the middle of the other bracket (9) is fixedly connected to a feed pipe (4), and the four corners are respectively fixedly connected to a water supply pipe (5) and a cleaning pipe (6); a material cart (8) is provided below the plurality of filter plates (1); The filter plate (1) comprises a filter plate body (11), and grooves are provided on both sides of the filter plate body (11); a material through hole (13) is provided in the middle of the filter plate body (11), and the material through hole (13) is communicated with a feed pipe (4); adjacent triangles in the four corners of the filter plate body (11) are provided with water through holes (16) penetrating the filter plate body (11), and another corner is provided with a cleaning hole (15); a plurality of drainage grooves (17) are provided on both sides of the filter plate body (11), and the plurality of drainage grooves (17) respectively correspond to the positions of the plurality of water through holes (16); An inner cavity (18) is provided inside the filter plate body (11), and the inner cavity (18) is communicated with the cleaning port (15); a drainage pipe (14) is fixedly connected to the bottom of one side of the filter plate body (11), and the drainage pipe (14) is communicated with the inner cavity (18); ear plates (12) are welded to the upper ends of both sides of the filter plate body (11); and a water tank (7) is provided below one end of the drainage pipe (14) away from the filter plate body (11).

2. The filter press for preparing pharmaceutical intermediates according to claim 1, characterized in that: The reset assembly (3) comprises a side plate (31), the two ends of the side plate (31) are respectively welded to the two brackets (9), and the bottom of the ear plate (12) is in contact with the top of the side plate (31); two support columns (32) are symmetrically welded to one side of the side plate (31) away from the filter plate body (11), and a belt (33) is provided between the two support columns (32); the two ends of the two support columns (32) are respectively welded to the two outer shells (35), and the two ends of the belt (33) extend to the inner sides of the two outer shells (35).

3. The filter press for preparing pharmaceutical intermediates according to claim 2, characterized in that: The support column (32) located at the upper layer of the two support columns (32) is slidably connected to the toggle device (34); the inner sides of both ends of the belt (33) are both transmission-connected with rotating shafts (36), and the two rotating shafts (36) are rotationally connected to the inner walls of the two shells (35) through bearing seats, respectively, one of the rotating shafts (36) is fixedly connected with a pulley (37), and a pulley (38) is provided below the pulley (37), and the pulley (38) is transmission-connected to the pulley (37) through the belt (30); the pulley (38) is fixedly connected to the output shaft of the motor (39), and the motor (39) is located inside the shell (35).

4. The filter press for preparing pharmaceutical intermediates according to claim 3, characterized in that: The toggle device (34) comprises a slide seat (341), the upper end of which is slidably connected to the support column (32) located at the upper layer of the two support columns (32), and the lower end of which is fixedly connected to the belt (33); a connecting shaft (343) is fixedly connected to the top end of the slide seat (341), and both ends of the connecting shaft (343) are rotatably connected to the rotating toggle member (342); a torsion spring (344) is sleeved on the outer side of the connecting shaft (343), one end of the torsion spring (344) is fixedly connected to the slide seat (341), and the other end is fixedly connected to the rotating toggle member (342); a fixed toggle member (345) is fixedly connected to the top end of the slide seat (341) away from the rotating toggle member (342).

5. The filter press for preparing pharmaceutical intermediates according to claim 4, characterized in that: The extrusion mechanism (2) comprises two hydraulic cylinders (21), and the two hydraulic cylinders (21) are both transmission-connected to the hydraulic station (25); the telescopic rods of the two hydraulic stations (25) are both fixedly connected to the push plate (22); the side of the push plate (22) away from the hydraulic cylinder (21) is fixedly connected to the middle of the movable plate (23), and the upper ends of both sides of the movable plate (23) are both installed with a plurality of rollers (24), and the plurality of rollers (24) are respectively movably connected to the tops of the two side plates (31).

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