Sample filtering device for instrumental analysis

Abstract

The utility model discloses a sample filtering device for instrumental analysis, which relates to the technical field of sample filtering devices and comprises a bottom frame, the top end of the bottom frame is connected with a lower through cylinder in an embedded manner, a collecting frame is arranged on one side of the bottom frame, and one end of the collecting frame penetrates through an opening in one side of the bottom frame and extends into the bottom frame. The outer wall of the collecting frame is in close contact with the inner wall of the bottom frame. According to the utility model, the centrifugal filtering mechanism is arranged, so that a pair of connecting round convex rods can be driven to repeatedly contact with and be far away from a plurality of fixed hemispheres in the rotating process of the filtering cylinder and the pair of connecting round convex rods, and the pair of connecting round convex rods and the filtering cylinder are promoted to do reciprocating up-and-down movement under the assistance of elastic stretching of a built-in cylinder, a T-shaped rod and a spring; and the sealing cover plate is repeatedly knocked to generate vibration, so that solid particles attached to filter holes of the filter cartridge fall under the action of up-and-down movement and vibration, the possibility of blockage is reduced, liquid in a water sample can be conveniently and quickly discharged, and the filtering efficiency of the water sample is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sample filtering device technical field, specifically a kind of sample filtering device for instrument analysis. BACKGROUND

[0002] Instrument analysis is the method for using various instruments to carry out qualitative, quantitative and structural analysis on matter. In instrument analysis, the components in the sample need to be qualitatively and quantitatively analyzed, but part of the sample, such as water quality sample, often contains suspended solid particles, which not only interferes with detection, but also blocks the instrument and causes damage. Therefore, a sample filtering device is needed to remove the solid particles in the water quality sample to ensure the accuracy of water quality sample analysis and the safety of the instrument.

[0003] At present, in the process of filtering solid particles of sample, vacuum pump suction filtration method is mostly used for filtering. However, in the process of suction filtration, although the water quality sample is separated quickly by suction in the early stage, the solid particles in it will also adhere to the filter container under the action of suction. As the adhesion of solid particles becomes more and more, it is easy to cause the blockage of part of filter holes, thereby affecting the filtering efficiency of water quality sample. Therefore, the utility model provides a sample filtering device for instrument analysis. SUMMARY

[0004] The utility model aims at making up for the deficiency of prior art, and provides a sample filtering device for instrument analysis.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a sample filtering device for instrument analysis, comprising a bottom frame, a lower through cylinder is connected to the top end of the bottom frame, a collection frame is arranged on one side of the bottom frame, one end of the collection frame extends to the inside through the opening on one side of the bottom frame, the outer wall of the collection frame is in close contact with the inner wall of the bottom frame, and the collection frame is located at the bottom of the lower through cylinder, a sealing cover plate is threadedly connected to the top end of the lower through cylinder, and a feed pipe is fixedly connected to the top end of the sealing cover plate, a centrifugal filtering mechanism is arranged on the sealing cover plate, and the centrifugal filtering mechanism is used for filtering and separating water quality sample.

[0006] The centrifugal filtering mechanism includes a filter cylinder, a bearing plate threadedly connected to the bottom end of the filter cylinder, an inner cylinder provided at the top end of the bearing plate, a pair of connecting rods fixedly connected between the outer wall of the inner cylinder and the inner wall of the filter cylinder, a T-shaped rod slidingly connected in the inner cylinder, a spring sleeved on the outer wall of the T-shaped rod, one end of the spring fixedly connected to the inner bottom end of the T-shaped rod, the other end of the spring fixedly connected to the inner top end of the inner cylinder, a circular hole opened in the inner top end of the inner cylinder, the top end of the T-shaped rod penetrating through the circular hole and rotationally connected to the bottom end of a sealing cover plate, a motor fixedly connected to the top end of the sealing cover plate and having an output end fixedly connected to the top end of the T-shaped rod, a pair of link circular convex rods fixedly connected to the outer wall of the inner cylinder and having top ends in contact with the bottom end of the sealing cover plate, and a plurality of fixed hemispheres fixedly connected to the bottom end of the sealing cover plate and respectively located outside the pair of link circular convex rods.

[0007] The top end of the lower through cylinder is provided with a circular through opening, and the outer wall of the sealing cover plate is in close contact with the inner wall of the circular through opening.

[0008] The outer wall of the T-shaped rod is fixedly connected to two pairs of sliding blocks near the bottom, the inner wall of the inner cylinder is provided with two pairs of sliding grooves, the sliding blocks are located in the sliding grooves and are in sliding connection with the sliding grooves, and the inner wall of the circular hole is in close contact with the outer wall of the T-shaped rod.

[0009] The bottom end of the sealing cover plate is provided with an annular groove, and the outer wall of the filter cylinder is in contact with the inner wall of the annular groove.

[0010] The top end of the sealing cover plate is provided with two pairs of first bolt holes, the inner wall of the first bolt hole is threadedly connected with a first fixed bolt, the lower through cylinder is provided with two pairs of first bolt grooves, the bottom end of the first fixed bolt is located in the first bolt groove and is in threaded connection with the first bolt groove, the bottom of the bearing plate is provided with two pairs of second fixed bolts, the bottom end of the bearing plate is provided with two pairs of second bolt holes, the bottom end of the filter cylinder is provided with two pairs of second bolt grooves, the top end of the second fixed bolt penetrates through the second bolt hole and extends into the second bolt groove, and the outer wall of the second fixed bolt is in threaded connection with the inner wall of the second bolt groove.

[0011] The top end of the sealing cover plate is fixedly connected with a pair of lifting rings.

[0012] The top end of the bottom frame is fixedly connected with a pair of vertical plates, the top end of the vertical plate is fixedly connected with a first magnet block, one end of a pair of the first magnet blocks is fixedly connected with a rectangular through frame, the top end of the rectangular through frame is provided with a second magnet block in contact with the rectangular through frame, the opposite sides of the first magnet block and the second magnet block are attracted to each other, the bottom end of the second magnet block is fixedly connected with an insertion plate, and the bottom end of the insertion plate penetrates through the inside of the rectangular through frame and extends to one side of the collecting frame.

[0013] Compared with the prior art, the sample filtering device for instrument analysis has the following beneficial effects:

[0014] Firstly, the centrifugal filtering mechanism can drive the filter cylinder to rotate along the horizontal direction through the motor, liquid in the water quality sample is thrown outwards by the rotating centrifugal force and falls into the collecting frame for collection, the solid particles are blocked by the filter cylinder, the insertion plate moves upward to cancel the limiting of the collecting frame, and the collecting frame and the filtered water quality sample can be discharged, so that the water quality sample can be accurately analyzed by the instrument.

[0015] Secondly, the centrifugal filtering mechanism can drive the pair of connecting convex rods to repeatedly contact and move away from the plurality of fixed hemispheres during the rotation of the filter cylinder and the pair of connecting convex rods, so that the pair of connecting convex rods and the filter cylinder reciprocatingly move up and down under the elastic expansion and contraction of the built-in cylinder, the T-shaped rod and the spring, and repeatedly knock the sealing cover plate to generate vibration, so that the solid particles attached to the filter hole of the filter cylinder fall under the action of the up-and-down movement and vibration, the possibility of blockage is reduced, the liquid in the water quality sample is quickly discharged, and the filtering efficiency of the water quality sample is improved.

[0016] Other advantages, objects, and features of the present application will be apparent to those skilled in the art from the following description, and it is intended to cover any alternatives, modifications, or equivalents, as can be included within the scope of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole three-dimensional structure schematic view of the present application;

[0018] Figure 2 It is a local split structure schematic view of the present application;

[0019] Figure 3 It is a local split structure schematic view of the present application;

[0020] Figure 4 It is a local split structure schematic view of the present application; Figure 3 enlarged structure schematic view of A in the present application.

[0021] In the figure: 1, the bottom frame; 2, the lower through cylinder; 201, the circular through port; 3, the sealing cover plate; 4, the feeding pipe; 5, the centrifugal filtering mechanism; 501, the filter cylinder; 502, the built-in cylinder; 503, the T-shaped rod; 5031, the sliding block; 5032, the sliding groove; 504, the spring; 505, the connecting round convex rod; 506, the fixed hemisphere; 507, the bearing plate; 508, the connecting rod; 509, the motor; 6, the annular groove; 7, the collection frame; 8, the first fixing bolt; 9, the lifting ring; 10, the vertical plate; 11, the first magnet block; 12, the second magnet block; 13, the insertion plate; 14, the rectangular through frame; 15, the second fixing bolt. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the present application provides a technical solution: a sample filtering device for instrument analysis, comprising a bottom frame 1, a lower through cylinder 2 is embedded and connected at the top end of the bottom frame 1, a collection frame 7 is arranged on one side of the bottom frame 1, and one end of the collection frame 7 extends to the inside through the opening on one side of the bottom frame 1, the outer wall of the collection frame 7 is in close contact with the inner wall of the bottom frame 1, and the collection frame 7 is located at the bottom of the lower through cylinder 2, a sealing cover plate 3 is threadedly connected at the top end of the lower through cylinder 2, and a feeding pipe 4 is fixedly connected at the top end of the sealing cover plate 3, a centrifugal filtering mechanism 5 is arranged on the sealing cover plate 3, and the centrifugal filtering mechanism 5 is used for filtering and separating water quality samples;

[0024] The centrifugal filtering mechanism 5 comprises a filtering cylinder 501, the bottom end of the filtering cylinder 501 is threadedly connected with a bearing plate 507, the top end of the bearing plate 507 is provided with an inner cylinder 502, a pair of connecting rods 508 are fixedly connected between the outer wall of the inner cylinder 502 and the inner wall of the filtering cylinder 501, a T-shaped rod 503 is slidably connected in the inner cylinder 502, a spring 504 is sleeved on the outer wall of the T-shaped rod 503, one end of the spring 504 is fixedly connected with the inner bottom end of the T-shaped rod 503, the other end of the spring 504 is fixedly connected with the inner top end of the inner cylinder 502, a circular hole is opened in the inner top end of the inner cylinder 502, the top end of the T-shaped rod 503 penetrates through the circular hole and is rotatably connected with the bottom end of a sealing cover plate 3, the top end of the sealing cover plate 3 is fixedly connected with a motor 509, the output end of the motor 509 is fixedly connected with the top end of the T-shaped rod 503, a pair of connecting convex rods 505 are fixedly connected with the outer wall of the inner cylinder 502, the bottom end of the sealing cover plate 3 is fixedly connected with a plurality of fixed hemispheres 506, the plurality of fixed hemispheres 506 are respectively located outside the pair of connecting convex rods 505, two pairs of sliding blocks 5031 are fixedly connected with the outer wall of the T-shaped rod 503 close to the bottom, two pairs of sliding grooves 5032 are opened in the inner wall of the inner cylinder 502, the sliding blocks 5031 are located in the sliding grooves 5032 and are slidably connected therewith, and the inner wall of the circular hole is in close contact with the outer wall of the T-shaped rod 503.

[0025] According to the overall structure of the device, the water quality sample is added into the filtering cylinder 501 through the feeding pipe 4, at the same time, the motor 509 is started to drive the T-shaped rod 503 and the inner cylinder 502 to rotate, so as to drive the filtering cylinder 501 to rotate synchronously, so as to drive the water quality sample in the filtering cylinder 501 to be filtered and separated under the action of rotation and centrifugation, the liquid in the water quality sample is thrown outwards and falls into the collecting frame 7 for collection, and the solid particles are blocked by the filtering cylinder 501, the pair of connecting convex rods 505 rotates synchronously with the filtering cylinder 501, repeatedly contacts and separates from the plurality of fixed hemispheres 506 along the bottom end of the sealing cover plate 3, in the process of contacting and separating, the pair of connecting convex rods 505 is first extruded downward by the fixed hemispheres 506, is separated from the bottom end of the sealing cover plate 3, drives the inner cylinder 502 to move downward under the assistance of the sliding blocks 5031 and the sliding grooves 5032, and compresses the spring 504, after separation, the inner cylinder 502 loses extrusion and is reset under the elastic action of the spring 504, drives the pair of connecting convex rods 505 and the filtering cylinder 501 to reset, so that the pair of connecting convex rods 505 contacts and collides with the bottom end of the sealing cover plate 3 again, so as to circulate, so that the pair of connecting convex rods 505 and the filtering cylinder 501 reciprocatingly move up and down, and repeatedly knock the sealing cover plate 3 to generate vibration, so as to make the solid particles attached to the filter hole of the filtering cylinder 501 fall under the action of reciprocating movement and vibration, reduce the possibility of blockage, thereby facilitating the rapid discharge of the liquid in the water quality sample and improving the filtering efficiency of the water quality sample.

[0026] As shown in Figure 1 , Figure 2 and Figure 3 , the top end of the lower through-cylinder 2 is drilled with a circular opening 201, and the outer wall of the sealing cover plate 3 is in close contact with the inner wall of the circular opening 201. The lower through-cylinder 2 is transparently arranged. The top end of the sealing cover plate 3 is drilled with two pairs of first bolt holes, and the inner wall of the first bolt hole is threadedly connected with a first fixing bolt 8. The lower through-cylinder 2 is drilled with two pairs of first bolt grooves, and the bottom end of the first fixing bolt 8 is located in the first bolt groove and is threadedly connected therewith. The bottom of the bearing plate 507 is provided with two pairs of second fixing bolts 15, and the bottom end of the bearing plate 507 is drilled with two pairs of second bolt holes. The bottom end of the filter cylinder 501 is drilled with two pairs of second bolt grooves. The top end of the second fixing bolt 15 passes through the second bolt hole and extends into the second bolt groove, and the outer wall of the second fixing bolt 15 is threadedly connected with the inner wall of the second bolt groove.

[0027] Through the arrangement of the circular opening 201, the sealing cover plate 3 is conveniently embedded on the lower through-cylinder 2, and then connected by rotating the first fixing bolt 8 through the first bolt hole and extending to the first bolt groove. The lower through-cylinder 2 and the sealing cover plate 3 can be connected to keep them fixed. At the same time, the second fixing bolt 15 can drive the filter cylinder 501 and the bearing plate 507 to be conveniently installed and separated, so as to facilitate the subsequent cleaning of the solid particles on the top end of the bearing plate 507 and the inside of the filter cylinder 501. The lower through-cylinder 2 is transparently arranged, which can facilitate the observation of the internal filtering condition.

[0028] As shown in Figure 3 , the bottom end of the sealing cover plate 3 is drilled with an annular groove 6, and the outer wall of the filter cylinder 501 is in contact with the inner wall of the annular groove 6.

[0029] Through the arrangement of the annular groove 6, the filter cylinder 501 is not easy to deviate in position during the up-down movement and rotation, ensuring stable movement. At the same time, the depth of the annular groove 6 is much greater than the up-down movement distance of the filter cylinder 501, so that the filter cylinder 501 is not easy to separate from the bottom end of the sealing cover plate 3 during the up-down movement, reducing the generation of gaps and avoiding the water quality sample from being thrown out through the gaps.

[0030] As shown in Figure 1 and Figure 2 , the top end of the sealing cover plate 3 is fixedly connected with a pair of pull rings 9.

[0031] Through the arrangement of the pull ring 9, after the sealing cover plate 3 and the lower through-cylinder 2 are loosened, the sealing cover plate 3 and the centrifugal filtering mechanism 5 are pulled up to move upward, so as to facilitate the subsequent cleaning of the solid particles on the top end of the bearing plate 507 and the inside of the filter cylinder 501.

[0032] AsFigure 1 and Figure 2 As shown in the drawings, the top end of the bottom frame 1 is fixedly connected with a pair of vertical plates 10, and the top end of the vertical plate 10 is fixedly connected with a first magnet block 11. One end of a pair of first magnet blocks 11 is fixedly connected with a rectangular through frame 14, and the top end of the rectangular through frame 14 is provided with a second magnet block 12 in contact therewith. The opposite sides of the first magnet block 11 and the second magnet block 12 attract each other. The bottom end of the second magnet block 12 is fixedly connected with a plug plate 13, and the bottom end of the plug plate 13 passes through the inside of the rectangular through frame 14 and extends to one side of the collection frame 7.

[0033] By pulling the second magnet block 12 upward, the plug plate 13 can be driven to move upward until it is separated from the rectangular through frame 14, canceling the limiting of the collection frame 7, facilitating the staff to pull the collection frame 7 outward, driving the filtered water quality sample to be discharged, so as to accurately analyze the water quality sample by the instrument.

[0034] Working principle: first, the water quality sample is added to the filter cartridge 501 through the feed pipe 4, at the same time, the motor 509 drives the T-shaped rod 503 and the built-in cylinder 502 to rotate, the built-in cylinder 502 drives the filter cartridge 501 to rotate through the connecting rod 508, so that the liquid in the water quality sample is thrown out under the action of rotating centrifugation and falls into the collection frame 7 inside for collection, and the solid particles are blocked by the filter cartridge 501, and a pair of connecting convex rods 505 rotates synchronously with the filter cartridge 501, repeatedly contacts and moves away from a plurality of fixed hemispheres 506 along the bottom end of the sealing cover plate 3, and in the process of contact and separation, the connecting convex rod 505 is first extruded downward by the fixed hemisphere 506, separated from the bottom end of the sealing cover plate 3, and drives the built-in cylinder 502 to move downward under the assistance of the sliding block 5031 and the sliding groove 5032, and compresses the spring 504, after separation, the built-in cylinder 502 is reset under the elastic action of the spring 504, and drives a pair of connecting convex rods 505 and filter cartridges 501 to reset, so that a pair of connecting convex rods 505 contacts and collides with the bottom end of the sealing cover plate 3 again, so as to circulate, so that a pair of connecting convex rods 505 and filter cartridges 501 reciprocate upward and downward, and repeatedly knock the sealing cover plate 3 to generate vibration, so as to make the solid particles attached to the filter holes of the filter cartridge 501 fall under the action of upward and downward movement and vibration, and after the sample filtration is completed, the second magnet block 12 is lifted upward, so that it drives the plug plate 13 to move upward until it is separated from the rectangular frame 14, canceling the limitation of the collection frame 7, then the staff pulls the collection frame 7 outward, drives the filtered water quality sample to discharge, then a plurality of first fixed bolts 8 are taken off in turn, and a pair of lifting rings 9 are lifted upward, driving the sealing cover plate 3 to separate from the lower cylindrical tube 2, then a plurality of second fixed bolts 15 are taken off in turn, driving the filter cartridge 501 and the bearing plate 507 to be disassembled and separated, and the solid particles in the filter cartridge 501 and on the top of the bearing plate 507 are cleaned.

[0035] The wiring diagram of the motor 509 in the scheme belongs to the common knowledge in the art, and its working principle is a known technology, and its model is selected according to actual use, so the control mode and wiring arrangement of the motor 509 will not be explained in detail.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A sample filtration device for instrumental analysis comprising a base frame (1), characterised in that: The top end of the bottom frame (1) is embedded with a lower through cylinder (2), one side of the bottom frame (1) is provided with a collecting frame (7), one end of the collecting frame (7) penetrates through the opening of one side of the bottom frame (1) and extends to the inside thereof, the outer wall of the collecting frame (7) is in close contact with the inner wall of the bottom frame (1), and the collecting frame (7) is located at the bottom of the lower through cylinder (2), the top end of the lower through cylinder (2) is threadedly connected with a sealing cover plate (3), and the top end of the sealing cover plate (3) is fixedly connected with a feeding pipe (4), the sealing cover plate (3) is provided with a centrifugal filtering mechanism (5), and the centrifugal filtering mechanism (5) is used for filtering and separating water quality samples. Wherein, the centrifugal filtering mechanism (5) includes a filter cylinder (501), the bottom end of the filter cylinder (501) is threadedly connected with a bearing plate (507), the top end of the bearing plate (507) is provided with an inner cylinder (502), a pair of connecting rods (508) are fixedly connected between the outer wall of the inner cylinder (502) and the inner wall of the filter cylinder (501), the inner cylinder (502) is slidably connected with a T-shaped rod (503), the outer wall of the T-shaped rod (503) is sleeved with a spring (504), one end of the spring (504) is fixedly connected with the inner bottom end of the T-shaped rod (503), the other end of the spring (504) is fixedly connected with the inner top end of the inner cylinder (502), the inner top end of the inner cylinder (502) is drilled with a circular hole, the top end of the T-shaped rod (503) penetrates through the circular hole and is rotatably connected with the bottom end of the sealing cover plate (3), the top end of the sealing cover plate (3) is fixedly connected with a motor (509), the output end of the motor (509) is fixedly connected with the top end of the T-shaped rod (503), the outer wall of the inner cylinder (502) is fixedly connected with a pair of link circular convex rods (505), the top ends of the pair of link circular convex rods (505) are in contact with the bottom end of the sealing cover plate (3), and the bottom end of the sealing cover plate (3) is fixedly connected with a plurality of fixed hemispheres (506), and the plurality of fixed hemispheres (506) are respectively located on the outer sides of the pair of link circular convex rods (505).

2. A sample filtration device for instrumental analysis according to claim 1, characterized in that: The top end of the lower through cylinder (2) is drilled with a circular opening (201), and the outer wall of the sealing cover plate (3) is in close contact with the inner wall of the circular opening (201), and the lower through cylinder (2) is transparent.

3. A sample filtration device for instrumental analysis according to claim 1, characterized in that: The outer wall of the T-shaped rod (503) is fixedly connected with two pairs of sliding blocks (5031) near the bottom, the inner wall of the inner cylinder (502) is drilled with two pairs of sliding grooves (5032), and the sliding blocks (5031) are located in the sliding grooves (5032) and are in sliding connection with the sliding grooves (5032), and the inner wall of the circular hole is in close contact with the outer wall of the T-shaped rod (503).

4. A sample filtration device for instrumental analysis according to claim 1, characterized in that: The bottom end of the sealing cover plate (3) is drilled with an annular groove (6), and the outer wall of the filter cylinder (501) is in contact with the inner wall of the annular groove (6).

5. A sample filtration device for instrumental analysis according to claim 1, characterized in that: The top of the sealing cover plate (3) is drilled with two pairs of first bolt holes, and the inner wall of the first bolt hole is screwed with a first fixing bolt (8), the lower through cylinder (2) is drilled with two pairs of first bolt grooves, and the bottom of the first fixing bolt (8) is located in the first bolt groove and is screwed with it, the bottom of the bearing plate (507) is provided with two pairs of second fixing bolts (15), and the bottom of the bearing plate (507) is drilled with two pairs of second bolt holes, the bottom of the filter cartridge (501) is drilled with two pairs of second bolt grooves, the top of the second fixing bolt (15) passes through the second bolt hole and extends into the second bolt groove, and the outer wall of the second fixing bolt (15) is screwed with the inner wall of the second bolt groove.

6. A sample filtration device for instrumental analysis according to claim 1, characterized in that: The top of the sealing cover plate (3) is fixedly connected with a pair of pull rings (9).

7. A sample filtration device for instrumental analysis according to claim 1, characterized in that: The top of the bottom frame (1) is fixedly connected with a pair of vertical plates (10), and the top of the vertical plate (10) is fixedly connected with a first magnet block (11), one end of a pair of the first magnet block (11) is fixedly connected with a rectangular through frame (14), and the top of the rectangular through frame (14) is provided with a second magnet block (12) in contact therewith, the opposite sides of the first magnet block (11) and the second magnet block (12) attract each other, the bottom of the second magnet block (12) is fixedly connected with a plug-in plate (13), and the bottom of the plug-in plate (13) passes through the inside of the rectangular through frame (14) and extends to one side of the collecting frame (7).

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