Filter pressing structure for preparing podophyllotoxin

Abstract

The utility model discloses a filter pressing structure for preparing podophyllotoxin, which belongs to the technical field of podophyllotoxin preparation, and comprises a frame body mechanism and a plurality of filter pressing plate mechanisms, the frame body mechanism is provided with a plurality of filter pressing plate mechanisms for solid-liquid separation in a sliding manner, and the filter pressing plate mechanisms are arranged on the frame body mechanism in a sliding manner. A plug pin mechanism for preventing the filter pressing plate mechanism from shaking is inserted into the filter pressing plate mechanism, and a screwing mechanism is in threaded connection with the plug pin mechanism. Through the arrangement of the frame body mechanism, the filter pressing plate mechanism, the bolt mechanism and the screwing mechanism, a worker can conveniently and quickly replace the filter pressing plates, so that the worker can conveniently maintain and replace the filter pressing plates, and the worker can conveniently increase and reduce the number of the filter pressing plates; through the arrangement of the square groove, the transverse through groove, the longitudinal through groove and the liquid discharge channel, the volume of the inner cavity of the filter pressing plate and the flow rate of liquid are effectively improved, and the working efficiency of the device is favorably improved.

Description

Technical Field

[0001] This utility model relates to the field of podophyllotoxin preparation technology, and in particular to a pressure filtration structure for podophyllotoxin preparation. Background Technology

[0002] Podophyllotoxin is a natural lignan compound extracted from plants such as Podophyllum. It has pharmacological activities such as antitumor and antiviral activity. In the production of podophyllotoxin or related chemical processes, pressure filtration is often used for solid-liquid separation. The pressure filtration process uses a filter press to force liquid through a filter cloth or other filter medium, while solid particles are retained, thereby achieving solid-liquid separation of materials such as podophyllotoxin extract. It can effectively remove impurities and improve product purity, playing an important role in ensuring the quality of podophyllotoxin products and improving production efficiency. It is one of the important separation and purification methods in the production of podophyllotoxin and related fields.

[0003] Existing plate and frame filter presses and chamber filter presses mostly use guide rods and guide grooves to guide and limit the filter plates and frames. Although this structure can ensure that the filter plates and frames can be aligned and pressed together to avoid leakage, the guide rods and guide grooves are nested, making it impossible to remove and replace individual filter plates or frames. When workers need to maintain or replace a filter plate or frame, they must first remove all the guide rods and then take out each filter plate or frame from the end of the guide rods one by one before they can remove the filter plate that needs to be maintained or replaced. This process is relatively complicated and time-consuming, making maintenance difficult.

[0004] Therefore, there is an urgent need to provide a pressure filtration structure for the preparation of podophyllotoxin to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a pressure filtration structure for the preparation of podophyllotoxin.

[0006] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a pressure filtration structure for the preparation of podophyllotoxin is provided, including a frame mechanism and a filter plate mechanism. Multiple filter plate mechanisms for solid-liquid separation are slidably arranged on the frame mechanism, and a pin mechanism for preventing the filter plate mechanism from shaking is inserted into the filter plate mechanism.

[0007] The pin mechanism is threadedly connected to a screwing mechanism;

[0008] The frame structure is also equipped with a clamping mechanism for pressing the filter plate mechanism.

[0009] The present invention is further configured such that: the frame mechanism includes a housing, a liquid collection tank is provided on the inner side of the housing, a plurality of guide rods are welded and fixed on the housing, a feed port is provided at one end of the housing, a drain port is provided at the front end of the housing, and a plurality of support legs are welded and fixed at the bottom end of the housing.

[0010] With the above technical solution, the shell is made of stainless steel, the guide rod is cylindrical, and there are two pairs of guide rods. The distance between the lower pair of guide rods is smaller than that between the higher pair of guide rods. The feed inlet can be connected to an external feed valve and a pressure feed pipe, and the drain outlet can be connected to an external drain valve and a conveying pipe.

[0011] The present invention is further configured such that: the filter plate mechanism includes a plate body slidably disposed on a guide rod, and recesses are provided on both sides of the plate body, and filter cloth is attached to the outside of the recesses.

[0012] With the above technical solution, the plate body is made of stainless steel. When two filter press plate mechanisms are attached, the recessed parts on their sides will form a cavity. A round hole is opened in the middle of the plate body, and the cavities between the plates can be connected through the round hole.

[0013] The present invention is further configured such that: a U-shaped groove is provided at both the front and rear ends of the plate, two U-shaped grooves are provided at the bottom end of the plate, a slot is provided on the inner side of the U-shaped groove, and a screwing groove is provided at the bottom end of the U-shaped groove.

[0014] Through the above technical solution, the spacing between U-shaped groove one and U-shaped groove two are matched with the spacing between the upper and lower pairs of guide rods, the inner diameter of U-shaped groove one and U-shaped groove two is slightly larger than the outer diameter of the guide rods, and U-shaped groove two has the same slot and screw groove structure as U-shaped groove one.

[0015] The present invention is further configured such that: a plurality of square grooves are provided on the inner side of the recessed portion, transverse through grooves are provided on the front and rear inner walls of the square grooves, longitudinal through grooves are provided on the upper and lower inner walls of the square grooves, and a drainage channel is provided at the bottom of the inner side of the plate.

[0016] Through the above technical solution, multiple square troughs form an approximately mesh-like structure. The square troughs are connected by transverse and longitudinal channels, making the structure relatively robust. Several square troughs at the bottom are connected to the drainage channel. When the device is used for pressure filtration, the solids in the material are blocked by the filter cloth, while the liquid passes through the filter cloth into the square troughs. Finally, the liquid flows through the transverse and longitudinal channels to the bottom drainage channel and then into the collection tank, thus achieving solid-liquid separation and pressure filtration.

[0017] The present invention is further configured such that: the pin mechanism includes a pin inserted into a slot, one end of the pin is welded and fixed with a pull block, the other end of the pin is provided with a chamfered portion, and the pin is also provided with a threaded slot.

[0018] Through the above technical solution, the plate is slidably connected to the guide rod through U-shaped groove one and U-shaped groove two. The pin can seal the U-shaped groove from the bottom, thereby preventing the plate from vertically displacing. The pin, guide rod and U-shaped groove can effectively prevent the plate from shaking during movement and ensure that the plate can be arranged neatly, effectively avoiding leakage. The chamfered part makes it easy for workers to insert the pin into the slot. The pull block is provided with two arc-shaped grooves, which improves the friction between the pull block and the human hand, making it easier for people to pull out the slot.

[0019] The present invention is further configured such that: the screwing mechanism includes a threaded rod threaded into the threaded slot, and a hand-tightening block is fixed at one end of the threaded rod.

[0020] With the above technical solution, the threaded rod passes through the screwing groove and is screwed into the threaded slot hole, thereby effectively preventing the pin mechanism from falling off the plate. When the operator needs to replace the filter press plate, the hand-operated block can be turned to remove the threaded rod from the threaded slot hole and the screwing groove. At this time, the operator can pull out the pin mechanism. When all four pin mechanisms on the filter press plate are pulled out, the pin mechanism is no longer blocking the lower end of the guide rod. The operator can then lift the filter press plate upwards, which facilitates the replacement and maintenance of the filter press plate. The operator can also quickly increase or decrease the number of filter press plate mechanisms through this structure.

[0021] The present invention is further configured such that: the clamping mechanism includes a hydraulic cylinder fixed on the housing, the output end of the hydraulic cylinder is provided with a telescopic rod, the end of the telescopic rod is welded and fixed with a connecting part, and an end plate is screwed and fixed on the connecting part.

[0022] With the above technical solution, the end plate is also slidably connected to the guide rod, and the connection method between the end plate and the guide rod is the same as that of the filter press plate mechanism. When the hydraulic cylinder is started, the telescopic rod will push the end plate, thereby pressing multiple filter press plate mechanisms. The material can be filtered through multiple filter press plate mechanisms, and the pressed liquid will drip into the collection tank. After the filtration is completed, the operator can place the slag receiving tray on the collection tank and operate the hydraulic cylinder to retract the telescopic rod. At this time, the filter press plates can be slidably opened, and the operator can clean the material cake into the slag receiving tray.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. This utility model, through the setting of frame mechanism, filter plate mechanism, pin mechanism and screwing mechanism, enables workers to easily and quickly disassemble and replace filter plates, thereby facilitating the maintenance and replacement of filter plates, and also making it easy for workers to increase or decrease the number of filter plates.

[0025] 2. By incorporating square grooves, transverse through grooves, longitudinal through grooves, and drainage channels, this invention effectively increases the volume of the internal cavity of the filter press plate and the flow rate of the liquid, thereby improving the working efficiency of the device. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a structural diagram of the frame mechanism of this utility model;

[0028] Figure 3 This is a structural diagram of the filter plate mechanism of this utility model;

[0029] Figure 4 This is a cross-sectional view of the filter plate mechanism of this utility model;

[0030] Figure 5 This is a structural diagram of the pin mechanism and the screwing mechanism of this utility model;

[0031] Figure 6 This is a structural diagram of the clamping mechanism of this utility model.

[0032] In the diagram: 1. Frame mechanism; 101. Shell; 102. Liquid collection tank; 103. Guide rod; 104. Feed inlet; 105. Drain outlet; 106. Support leg; 2. Filter plate mechanism; 201. Plate body; 202. Recessed part; 203. Filter cloth; 204. U-shaped groove one; 205. U-shaped groove two; 206. Square groove; 207. Slot; 208. Twisting groove; 209. Transverse through groove; 210. Longitudinal through groove; 211. Drainage channel; 3. Pin mechanism; 301. Pin; 302. Pull block; 303. Chamfered part; 304. Threaded slot hole; 4. Twisting mechanism; 401. Threaded rod; 402. Hand-tightening block; 5. Clamping mechanism; 501. Hydraulic cylinder; 502. Telescopic rod; 503. Connecting part; 504. End plate. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0034] Please see Figures 1-6A pressure filtration structure for the production of podophyllotoxin includes a frame mechanism 1 and a filter plate mechanism 2. The frame mechanism 1 includes a housing 101, a liquid collection tank 102 on the inner side of the housing 101, multiple guide rods 103 welded and fixed on the housing 101, a feed inlet 104 at one end of the housing 101, a drain outlet 105 at the front end of the housing 101, and multiple support legs 106 welded and fixed to the bottom end of the housing 101. The housing 101 is made of stainless steel. The guide rods 103 are cylindrical and there are two pairs of guide rods 103. The spacing between the lower pair of guide rods 103 is smaller than that between the higher pair of guide rods 103. The feed inlet 104 can be connected to a feed valve and a pressure feed pipe, and the drain outlet 105 can be connected to a drain valve and a conveying pipe.

[0035] like Figure 1 , Figure 3 and Figure 4 As shown, multiple filter press mechanisms 2 for solid-liquid separation are slidably mounted on the frame mechanism 1. Each filter press mechanism 2 includes a plate 201 slidably mounted on a guide rod 103. Recesses 202 are formed on both sides of the plate 201, and filter cloth 203 is attached to the outside of each recess 202. U-shaped grooves 204 are formed at both the front and rear ends of the plate 201, and two U-shaped grooves 205 are formed at the bottom end of the plate 201. Slots 207 are formed on the inner side of each U-shaped groove 204, and a twisting groove 208 is formed at the bottom end of each U-shaped groove 204. Multiple square grooves 206 are formed on the inner side of each recess 202, and transverse through grooves 209 are formed on both the front and rear inner walls of each square groove 206. The upper and lower inner walls of the groove 206 are provided with longitudinal through grooves 210. The bottom of the plate 201 is provided with a drainage channel 211. The plate 201 is made of stainless steel. When the two filter press mechanisms 2 are attached, the recessed part 202 on its side will form a cavity. A round hole is provided in the middle of the plate 201. The cavities between the plates 201 can be connected through the round hole. The spacing of U-shaped groove 1 204 and U-shaped groove 205 are respectively matched with the spacing of the upper and lower pairs of guide rods 103. The inner diameter of U-shaped groove 1 204 and U-shaped groove 205 is slightly larger than the outer diameter of the guide rods 103. U-shaped groove 205 is provided with the same slot 207 and twisting groove 208 structure as U-shaped groove 1 204.

[0036] like Figure 1 , Figure 3 and Figure 5As shown, a pin mechanism 3 is inserted into the filter press plate mechanism 2 to prevent it from shaking. The pin mechanism 3 includes a pin 301 inserted into a slot 207. A pull block 302 is welded to one end of the pin 301, and a chamfered portion 303 is provided on the other end of the pin 301. A threaded slot 304 is also provided on the pin 301. The plate 201 is slidably connected to the guide rod 103 through a U-shaped groove 1 204 and a U-shaped groove 205. The pin 301 can close the U-shaped groove from the bottom, thereby preventing vertical displacement of the plate 201. The pin 301, guide rod 103, and U-shaped groove can effectively prevent the plate 201 from shaking during movement and ensure that the plate 201 can be arranged neatly, effectively preventing leakage. The chamfered portion 303 makes it easy for the operator to insert the pin 301 into the slot 207. The pull block 302 is provided with two arc-shaped grooves, which improves the efficiency of the pull block 301. The friction between the pin mechanism 3 and the human hand facilitates the removal of the slot 207. The pin mechanism 3 is threadedly connected to a screwing mechanism 4, which includes a threaded rod 401 threadedly connected to the threaded slot 304. One end of the threaded rod 401 is fixed with a hand-tightening block 402. The threaded rod 401 passes through the screwing groove 208 and is screwed into the threaded slot 304, thus effectively preventing the pin mechanism 3 from falling off the plate 201. When the operator needs to replace the filter plate, the hand-tightening block 402 can be turned to remove the threaded rod 401 from the threaded slot 304 and the screwing groove 208. At this time, the operator can pull out the pin mechanism 3. When all four pin mechanisms 3 on the filter plate are pulled out, the pin mechanisms 3 no longer block the lower end of the guide rod 103. The operator can then lift the filter plate upwards, which facilitates the replacement and maintenance of the filter plate. The operator can also quickly increase or decrease the number of filter plate mechanisms 2 through this structure.

[0037] like Figure 1 and Figure 6 As shown, the frame mechanism 1 is also equipped with a pressing mechanism 5 for pressing the filter press mechanism 2. The pressing mechanism 5 includes a hydraulic cylinder 501 fixed on the housing 101. The output end of the hydraulic cylinder 501 is provided with a telescopic rod 502. The end of the telescopic rod 502 is welded and fixed with a connecting part 503. The connecting part 503 is screwed and fixed with an end plate 504. The end plate 504 is also slidably connected with the guide rod 103. The connection method between the end plate 504 and the guide rod 103 is the same as that of the filter press mechanism 2. When the hydraulic cylinder 501 is started, the telescopic rod 502 will push the end plate 504, thereby pressing multiple filter press mechanisms 2. The material can be filtered through multiple filter press mechanisms 2. The liquid pressed out will drip into the collection tank 102. After the filtration is completed, the operator can place the slag receiving tray on the collection tank 102 and operate the hydraulic cylinder 501 to retract the telescopic rod 502. At this time, the filter press plates can slide open, and the operator can clean the material cake into the slag receiving tray.

[0038] In use, the operator can first press multiple filter plate mechanisms 2 together using the pressing mechanism 5. At this time, a cavity will be formed between each pair of adjacent filter plate mechanisms 2. The operator can turn on the feed switch, and the material enters each cavity from the feed port 104 and the round hole on the plate body 201. The liquid is separated through the filter cloth 203 and flows into the collection tank 102 through the square groove 206, the transverse groove 209, the drain channel 211, and the drain outlet 215. Then it is discharged into the corresponding container through the drain outlet 105. After the filter pressing is completed, the operator can operate the pressing mechanism 5 to retract the telescopic rod 502 into the hydraulic cylinder 501. At this time, the filter plate mechanism 2 can be separated, which makes it easy for the operator to clean the material cake. When individual filter cloths 203 are saturated or filter plate mechanisms 2 are damaged, the operator can quickly remove the filter plate mechanism 2 for maintenance or replacement using the pin mechanism 3 and the screwing mechanism 4. The operator can also quickly increase or decrease the number of filter plate mechanisms 2 using the pin mechanism 3 and the screwing mechanism 4.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pressure filtration structure for the production of podophyllotoxin, comprising a frame mechanism (1) and a filter press mechanism (2), characterized in that: The frame mechanism (1) is slidably provided with multiple filter press plate mechanisms (2) for solid-liquid separation, and the filter press plate mechanism (2) is provided with a pin mechanism (3) for preventing the filter press plate mechanism (2) from shaking. The pin mechanism (3) is threadedly connected to a screwing mechanism (4); The frame mechanism (1) is also equipped with a pressing mechanism (5) for pressing the filter plate mechanism (2); The frame mechanism (1) includes a housing (101), a liquid collection tank (102) is provided on the inner side of the housing (101), a plurality of guide rods (103) are welded and fixed on the housing (101), a feed inlet (104) is provided at one end of the housing (101), a drain outlet (105) is provided at the front end of the housing (101), and a plurality of support legs (106) are welded and fixed at the bottom end of the housing (101). The filter press mechanism (2) includes a plate (201) slidably disposed on a guide rod (103), and recesses (202) are provided on both sides of the plate (201), and a filter cloth (203) is attached to the outside of the recesses (202). The plate (201) has a U-shaped groove (204) at both the front and rear ends, and two U-shaped grooves (205) at the bottom end of the plate (201). The U-shaped groove (204) has a slot (207) on its inner side, and the U-shaped groove (204) has a screwing groove (208) at its bottom end. The pin mechanism (3) includes a pin (301) inserted into a slot (207). A pull block (302) is welded to one end of the pin (301), and a chamfer (303) is provided at the other end of the pin (301). A threaded slot (304) is also provided on the pin (301). The screwing mechanism (4) includes a threaded rod (401) threaded into the threaded slot (304), and a hand-tightening block (402) is fixed at one end of the threaded rod (401). The clamping mechanism (5) includes a hydraulic cylinder (501) fixed on the housing (101). The output end of the hydraulic cylinder (501) is provided with a telescopic rod (502). The end of the telescopic rod (502) is welded and fixed with a connecting part (503). An end plate (504) is screwed on the connecting part (503).

2. The pressure filtration structure for the preparation of podophyllotoxin according to claim 1, characterized in that: The recess (202) has multiple square grooves (206) on its inner side. The front and rear inner walls of the square grooves (206) are provided with transverse through grooves (209). The upper and lower inner walls of the square grooves (206) are provided with longitudinal through grooves (210). The bottom of the plate (201) is provided with a drainage channel (211).

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