Multi-position suction filtration device for laboratory

Abstract

The utility model discloses a multi-position suction filtration device for a laboratory. Belongs to the technical field of suction filtration. According to the technical key points, the device comprises a box body, the top of the box body is communicated and connected with a plurality of connecting pipe bodies, the top of the box body is fixedly connected with fixed clamping mechanisms in one-to-one correspondence with the connecting pipe bodies, glass sand core funnels are clamped in the fixed clamping mechanisms, and rubber sealing rings are fixedly connected to the positions, close to the top ends, of the inner walls of the connecting pipe bodies; a first control valve is arranged on the connecting pipe body, a protection box is arranged on one side of the box body at intervals, the inlet end of the protection box is connected with the box body through a first suction filtration pipe, and the outlet end of the protection box is connected with a suction filtration pump through a second suction filtration pipe; the problems that an existing suction filtration device can only perform suction filtration on a single sample and cannot perform suction filtration on a plurality of samples, so that more time is wasted, and the suction filtration efficiency is reduced are solved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum filtration technology, specifically a multi-position vacuum filtration device for laboratory use. Background Technology

[0002] In chemical reaction processes, filtration is an unavoidable step. However, filtration cannot always be carried out at normal pressure, so vacuum filtration is required. Existing vacuum filtration devices typically consist of a vacuum filtration flask, a funnel, and a vacuum pump. The vacuum pump extracts the gas from the vacuum filtration flask to ensure a negative pressure state inside the flask. The liquid-solid mixture is located in the funnel, which is connected to the vacuum filtration flask by a rubber stopper. Due to the pressure difference, the liquid-solid mixture is separated.

[0003] However, in practical applications, existing filtration devices can only filter a single sample and cannot filter multiple samples, resulting in a significant waste of time and reduced filtration efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a multi-position vacuum filtration device for laboratory use. This technical solution solves the problem mentioned in the background art that the existing vacuum filtration devices can only perform vacuum filtration on a single sample and cannot perform vacuum filtration on multiple samples, resulting in a waste of time and reduced vacuum filtration efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A laboratory multi-position filtration device includes a housing. Several connecting pipes are conductively connected to the top of the housing. A fixing clamping mechanism, corresponding to each connecting pipe, is fixedly connected to the top of the housing. A glass frit funnel is clamped within each fixing clamping mechanism. A rubber sealing ring is fixedly connected to the inner wall of each connecting pipe near its top. The lower end of the glass frit funnel is inserted into the inner ring of the rubber sealing ring and fits tightly against it. A first control valve is installed on each connecting pipe. Protective boxes are spaced apart on one side of the housing. The inlet of each protective box is connected to the housing via a first filtration pipe, and the outlet of each protective box is connected to a filtration pump via a second filtration pipe. A second control valve is installed on the first filtration pipe.

[0007] Preferably, the bottom of the box is connected to a drain pipe, and a drain valve is provided on the drain pipe.

[0008] Preferably, a cleaning port is provided on one side of the box, a sealing cover is connected to the outside of the cleaning port, and a handle is fixedly connected to the outside of the sealing cover.

[0009] Preferably, the fixing clamping mechanism includes a fixing ring located directly above the connecting tube body. The fixing ring is fixedly connected to the box body by several support rods. Several mounting grooves are arranged in a circular array on the inner ring of the fixing ring. A vertically arranged bidirectional lead screw is rotatably connected to each of the mounting grooves. The top ends of the bidirectional lead screws extend to the top of the fixing ring and are fixedly connected to gears. A rotary drive assembly connected to the gears is provided at the top of the fixing ring. Two sliding sleeves are threaded onto the bidirectional lead screws. The sliding sleeves are slidably disposed in the mounting grooves. A connecting rod is hinged to one side of the two sliding sleeves facing the axis of the fixing ring. A stop plate is hinged to the other end of the two connecting rods. The glass frit funnel is clamped between the stop plates.

[0010] Preferably, the rotary drive assembly includes a fixed shaft ring fixedly connected to the top of a fixed ring, a rotating collar rotatably connected to the outside of the fixed shaft ring, an internal gear ring fixedly connected to the inside of the rotating collar, a plurality of gears meshing with the internal gear ring, and a plurality of balls rollingly connected between the upper and lower sides of the fixed shaft ring and the rotating collar.

[0011] Preferably, a flexible pad is fixedly connected to the side of the abutment facing the glass core funnel, and the flexible pad is made of rubber.

[0012] Compared with the prior art, this utility model provides a multi-position vacuum filtration device for laboratory use, which has the following beneficial effects:

[0013] 1. This utility model, by setting up a box, several connecting pipes and a first control valve, allows multiple glass frit funnels to be inserted simultaneously through the connecting pipes after the filtration pump is started, enabling filtration of multiple samples, greatly improving filtration efficiency and saving filtration time. The first control valve on the connecting pipe can close and seal individual connecting pipes when they are not needed, preventing open connecting pipes from causing the box to be unable to form a negative pressure state, thus affecting the filtration of other samples.

[0014] This invention, by setting a fixing clamping mechanism, can clamp and fix the glass core funnel inserted in the rubber sealing ring, preventing the glass core funnel from being accidentally knocked over and causing the sample to spill, thereby improving the safety of the device.

[0015] This invention, by setting up a protective box, can prevent the backflow of the mother liquor during the filtration process, thereby affecting the normal operation of the filtration pump and playing a protective role. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the drain pipe in this utility model.

[0018] Figure 3 This is a schematic diagram of the fixed clamping mechanism in this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the rubber sealing ring in this utility model.

[0020] Figure 5 In this utility model Figure 4 A magnified structural diagram at point A.

[0021] Figure 6 This is a top view of the fixing and clamping mechanism in this utility model.

[0022] The following are the labels in the diagram: 1. Box body; 2. Connecting pipe body; 3. Fixed clamping mechanism; 301. Fixing ring; 302. Mounting groove; 303. Bidirectional lead screw; 304. Gear; 305. Rotary drive assembly; 3051. Fixed shaft collar; 3052. Rotating collar; 3053. Internal gear ring; 3054. Ball bearing; 306. Sliding sleeve; 307. Connecting rod; 308. Support plate; 4. Glass core funnel; 5. Rubber sealing ring; 6. First control valve; 7. Protective box; 8. First suction pipe; 9. Second suction pipe; 10. Suction pump; 11. Second control valve; 12. Drain pipe; 13. Drain valve; 14. Sealing cover; 15. Handle; 16. Flexible pad. Detailed Implementation

[0023] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0024] Please refer to Figures 1 to 6As shown, a laboratory multi-position vacuum filtration device includes a housing 1. Several connecting pipes 2 are conductively connected to the top of the housing 1. A fixing clamping mechanism 3, corresponding to each connecting pipe 2, is fixedly connected to the top of the housing 1. A glass frit funnel 4 is clamped within the fixing clamping mechanism 3. A rubber sealing ring 5 is fixedly connected to the inner wall of each connecting pipe 2 near its top. The lower end of the glass frit funnel 4 is inserted into the inner ring of the rubber sealing ring 5 and fits tightly against it. A first control valve 6 is provided on each connecting pipe 2. This first control valve 6 can close and seal individual connecting pipes 2 when they are not needed, preventing open connecting pipes 2 from preventing the formation of a negative pressure state within the housing 1, thus affecting the filtration of other samples. Protective boxes 7 are spaced apart on one side of the housing 1. The protective boxes 7 prevent backflow of the mother liquor during filtration, thus protecting the normal operation of the vacuum pump 10. The inlet of the protective box 7 is connected to the box body 1 via a first filtration pipe 8, and the outlet of the protective box 7 is connected to a filtration pump 10 via a second filtration pipe 9. After the filtration pump 10 is started, multiple glass frit funnels 4 can be inserted simultaneously through several connecting pipes 2 to perform filtration on multiple samples, greatly improving filtration efficiency and saving filtration time. A second control valve 11 is provided on the first filtration pipe 8 to adjust the vacuum level of the box body 1 to control the filtration speed.

[0025] Furthermore, a drain pipe 12 is connected to the bottom of the box 1, and a drain valve 13 is provided on the drain pipe 12. By setting the drain pipe 12 and the drain valve 13, the mother liquor separated in the box 1 can be discharged and collected after the filtration work is completed. The mother liquor usually contains raw materials that have not been completely extracted, reaction products, solvents and other impurities. These components may have potential economic value and utilization value.

[0026] Furthermore, a cleaning port is provided on one side of the housing 1. After the device is used, the cleaning port can be used to clean the residual filtrate on the inner wall of the housing 1, preventing the filtrate from adhering to the inner wall of the housing 1 for a long time and causing corrosion. A sealing cover 14 is connected to the outside of the cleaning port, which is sealed when the cleaning port is not in use. A handle 15 is fixedly connected to the outside of the sealing cover 14.

[0027] Furthermore, the fixing clamping mechanism 3 includes a fixing ring 301 located directly above the connecting tube 2. The fixing ring 301 is fixedly connected to the box 1 by several support rods. Several mounting grooves 302 arranged in a ring array are opened in the inner circle of the fixing ring 301. A vertically arranged bidirectional lead screw 303 is rotatably connected in each of the mounting grooves 302. The top ends of the bidirectional lead screws 303 extend to the top of the fixing ring 301 and are fixedly connected to gears 304. A rotary drive assembly 305 connected to the gears 304 is provided at the top of the fixing ring 301. Two sliding sleeves 306 are threadedly connected to the bidirectional lead screws 303. The sliding sleeves 306 are slidably disposed in the mounting grooves 302. A connecting rod 307 is hinged to the side of the two sliding sleeves 306 facing the axis of the fixing ring 301. A stop plate 308 is hinged to the other end of the two connecting rods 307. The glass frit funnel 4 is sandwiched between the stop plates 308. When the fixed clamping mechanism 3 is in use, the glass core funnel 4 is first inserted into the rubber sealing ring 5. Then, the rotary drive assembly 305 drives several gears 304 to rotate synchronously, thereby driving each bidirectional lead screw 303 to rotate synchronously. When the bidirectional lead screw 303 rotates clockwise, it will drive the two sliding sleeves 306 to move away from each other. With the cooperation of the connecting rod 307, the abutment plate 308 is pushed to gradually approach the glass core funnel 4 until the abutment plate 308 abuts against the surface of the glass core funnel 4. The glass core funnel 4 is clamped and fixed by the cooperation of several abutment plates 308.

[0028] Furthermore, the rotary drive assembly 305 includes a fixed collar 3051 fixedly connected to the top of the fixed ring 301, a rotating collar 3052 rotatably connected to the outside of the fixed collar 3051, and an internal gear ring 3053 fixedly connected to the inside of the rotating collar 3052. Several gears 304 are meshed with the internal gear ring 3053. Several ball bearings 3054 are rolled between the upper and lower sides of the fixed collar 3051 and the rotating collar 3052. The ball bearings 3054 make the rotation of the rotating collar 3052 smoother and less strenuous. In use, the rotary drive assembly 305 is driven by manually rotating the rotating collar 3052 to rotate the internal gear ring 3053, thereby driving the several gears 304 to rotate synchronously.

[0029] Furthermore, a flexible pad 16 is fixedly connected to the side of the abutment plate 308 facing the glass core funnel 4. The flexible pad 16 is made of rubber. By setting the flexible pad 16, the glass core funnel 4 can be protected, preventing damage to the surface of the glass core funnel 4 when the abutment plate 308 is pressed against the surface of the glass core funnel 4. The rubber flexible pad 16 has strong wear resistance and is not easily worn during long-term use.

[0030] The working principle and usage of this device are as follows: When filtering the sample, the glass core funnel 4 is inserted into the rubber sealing ring 5. Then, by manually rotating the rotating collar 3052, the internal gear ring 3053 is rotated, which drives several gears 304 to drive each double-acting screw 303 to rotate synchronously. When the double-acting screw 303 rotates clockwise, it will drive the two sliding sleeves 306 to move away from each other. With the cooperation of the connecting rod 307, the abutment plate 308 is pushed to gradually approach the glass core funnel 4 until it abuts against the surface of the glass core funnel 4. The glass core funnel 4 is clamped and fixed by the cooperation of several abutment plates 308. By repeating the above steps to install an appropriate number of glass frit funnels 4, when glass frit funnels 4 are not inserted into individual connecting pipes 2, the first control valve 6 is used to seal them to prevent the open connecting pipes 2 from causing the box 1 to be unable to form a negative pressure state, thus affecting the filtration of other samples. Then, the filtration sample is poured into each glass frit funnel 4, and finally the filtration pump 10 is started to extract the air from the box 1, so that the box 1 forms a negative pressure state for filtration. During filtration, the mother liquor in the sample will enter the box 1 for collection, while the solid particles in the sample will be intercepted by the glass frit funnels 4.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-position filtration apparatus for laboratory use, comprising a box (1), characterized in that, The top of the box (1) is connected with several connecting pipes (2), the top of the box (1) is fixedly connected with a fixed clamping mechanism (3) corresponding to each connecting pipe (2), the glass sand core funnel (4) is clamped in the fixed clamping mechanism (3), the rubber sealing ring (5) is fixedly connected to the inner wall of the connecting pipe (2) near the top end, the lower end of the glass sand core funnel (4) is inserted into the inner ring of the rubber sealing ring (5) and tightly fits with the inner ring of the rubber sealing ring (5), the first control valve (6) is arranged on the connecting pipe (2), the protection box (7) is arranged on one side of the box (1), the inlet end of the protection box (7) is connected with the box (1) through the first filter pipe (8), the outlet end of the protection box (7) is connected with the filter pump (10) through the second filter pipe (9), and the second control valve (11) is arranged on the first filter pipe (8).

2. A multi-position filtration apparatus for use in a laboratory as defined in claim 1, wherein, The bottom of the box (1) is connected with a drainage pipe (12), and a drainage valve (13) is arranged on the drainage pipe (12).

3. The multi-position filtration apparatus for laboratory use according to claim 1, wherein A cleaning port is formed in one side of the box (1), a sealing cover door (14) is connected to the outside of the cleaning port, and a handle (15) is fixedly connected to the outside of the sealing cover door (14).

4. The multi-position filtration apparatus for laboratory use according to claim 1, wherein The fixed clamping mechanism (3) comprises a fixed ring (301) located directly above the connecting pipe (2), the fixed ring (301) is fixedly connected with the box (1) through a plurality of supporting rods, a plurality of installation grooves (302) are arranged in the inner ring of the fixed ring (301) in an annular array, a vertical bidirectional screw (303) is rotatably connected in each of the installation grooves (302), the top end of each of the bidirectional screws (303) extends to the top of the fixed ring (301) and is fixedly connected with a gear (304), a rotary driving assembly (305) is arranged at the top end of the fixed ring (301) and is connected with the gears (304), two sliding sleeves (306) are threadedly connected on the bidirectional screw (303), the sliding sleeves (306) are slidably arranged in the installation grooves (302), and a connecting rod (307) is hingedly connected to one side of each of the two sliding sleeves (306) facing the shaft of the fixed ring (301). A resisting plate (308) is hingedly connected to the other end of the two connecting rods (307), and the glass sand core funnel (4) is clamped between the resisting plates (308).

5. A multi-position filtration apparatus for use in a laboratory as defined in claim 4, wherein, The rotary driving assembly (305) comprises a fixed shaft ring (3051) fixedly connected to the top end of the fixed ring (301), a rotary sleeve ring (3052) rotatably connected to the outside of the fixed shaft ring (3051), an inner gear ring (3053) fixedly connected to the inside of the rotary sleeve ring (3052), and a plurality of gears (304) rotatably connected with the inner gear ring (3053). A plurality of rolling balls (3054) are rotatably connected between the upper and lower sides of the fixed shaft ring (3051) and the rotary sleeve ring (3052).

6. A multi-position filtration apparatus for use in a laboratory as defined in claim 4, wherein, The side of the resisting plate (308) facing the glass sand core funnel (4) is fixedly connected with a flexible pad (16), and the flexible pad (16) is made of rubber material.

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