Sample preparation device

Abstract

The utility model discloses a sample preparation device which comprises an operation box, and a one-way exhaust mechanism is arranged on the left side of the operation box; an air inlet filtering mechanism is arranged on the right side of the operation box; a storage box is arranged at the top of the operation box, and a plurality of first locking screws are arranged on a storage opening; a left operation opening and a right operation opening are formed in the front side of the operation box, and operation opening sealing mechanisms are arranged on the left operation opening and the right operation opening. The operation box disclosed by the utility model can form a relatively sealed operation space, so that the influence of environmental factors in a sample preparation process is reduced, and the risk of sample pollution is reduced. The one-way exhaust mechanism and the inlet air filtering mechanism are arranged on the operation box, the one-way exhaust mechanism is matched with the inlet air filtering mechanism to exhaust the interior of the operation box, toxic gas generated in the operation box can be exhausted, and the safety of sample preparation is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sample preparation technical field, concretely relates to a sample preparation device. BACKGROUND

[0002] The operation box and the hundred level purification table are in a thousand level purification experimental environment, and the traditional sample preparation is usually carried out on the hundred level open purification table, and the method is susceptible to environmental factors, and when the sample is prepared, the baffle of the hundred level purification table is opened, the purification table is completely exposed in a thousand level purification environment, and repeatedly opening and closing the baffle of the purification table can cause the small particles remaining on the top to fall due to vibration, and the experimenter's body can also contact the sample, resulting in sample contamination, increasing the background value, and thus affecting the accurate test of chemical analysis. SUMMARY

[0003] In view of the above-mentioned deficiencies of the prior art, the utility model provides a sample preparation device.

[0004] To achieve the above-mentioned invention purpose, the technical scheme that the utility model adopts is: including operation box, the left side of operation box is provided with negative pressure exhaust port, one-way exhaust mechanism is provided on negative pressure exhaust port, the right side of operation box is provided with air inlet, air inlet is provided with air inlet filter mechanism, the top of operation box is provided with the article mouth, the article mouth is provided with the article box that can lift in, the article mouth is provided with a plurality of first locking screws of fixed article box, the front side of operation box is provided with left operation mouth and right operation mouth, left operation mouth and right operation mouth are provided with operation mouth sealing mechanism.

[0005] Further, the one-way exhaust mechanism includes a herringbone-shaped exhaust bracket, an exhaust rod, an exhaust cover, a return spring and a first limiting portion. The exhaust bracket is fixed on the negative pressure exhaust port. A guide hole is arranged on the exhaust bracket. The exhaust rod is installed in the guide hole. One end of the exhaust rod is fixedly connected with the exhaust cover, and the other end is fixed with the first limiting portion. The return spring is arranged on the exhaust rod. One end of the return spring is supported on the exhaust bracket, and the other end is supported on the first limiting portion.

[0006] Further, an exhaust pipe is fixed outside the negative pressure exhaust port. An exhaust fan is arranged in the exhaust pipe. The inner diameter of the exhaust pipe is larger than the diameter of the negative pressure exhaust port.

[0007] Further, the diameter of the exhaust cover is larger than the diameter of the air inlet of the negative pressure exhaust port. The exhaust cover covers the air outlet side of the negative pressure exhaust port in the normal state.

[0008] Further, the air inlet filtering mechanism comprises a high-efficiency air filter, a magnetic attraction baffle and a sealing frame, the high-efficiency air filter is arranged in the air inlet, the bottom of the magnetic attraction baffle is rotationally connected with the air inlet, the area of the magnetic attraction baffle is larger than that of the air inlet, the air inlet is provided with the sealing frame matched with the magnetic attraction baffle on the air inlet side, and the magnetic attraction baffle is magnetically connected with the sealing frame.

[0009] Further, the storage box is provided with a transverse partition plate, the transverse partition plate divides the storage box into an upper placement cavity and a lower placement cavity, the top of the upper placement cavity is provided with a top storage opening, the upper placement cavity is provided with a vertical partition plate, and the front side of the lower placement cavity is provided with a front storage opening.

[0010] Further, the operation port sealing mechanism comprises left and right shielding covers, a connecting plate and a second locking screw, the left and right shielding covers are fixedly connected through the connecting plate, the middle part of the connecting plate is provided with a through hole matched with the second locking screw, and the operation box is provided with a fixed threaded sleeve matched with the second locking screw.

[0011] Further, the left and right shielding covers are provided with sealing rubber pads, and the sealing rubber pads are provided with sealing protrusions matched with the inner walls of the operation ports.

[0012] Further, the left and right operation ports are provided with sealing rubber rings, the sealing rubber rings are in the shape of a circular truncated cone, and large ends of the sealing rubber rings are sealingly connected with the operation ports.

[0013] Further, the storage box is provided with a plurality of grooves matched with the first locking screw.

[0014] The operation box has the advantages that:

[0015] The operation box is provided with a negative pressure exhaust port, an air inlet, a storage port, a left operation port and a right operation port, the negative pressure exhaust port is provided with a one-way exhaust mechanism, the air inlet is provided with an openable and closable air inlet filtering mechanism, the storage port is provided with a sliding sealing cooperation storage box, and the left and right operation ports are connected with the outside through an operation port sealing mechanism, so that the operation box can form a relatively sealed operation space, the influence of environmental factors on sample preparation is reduced, and the risk of sample pollution is reduced.

[0016] The operation box is provided with a one-way exhaust mechanism and an air inlet filtering mechanism, the one-way exhaust mechanism cooperates with the air inlet filtering mechanism to perform exhaust operation on the inside of the operation box, toxic gases generated in the operation box can be exhausted, and the safety of sample preparation is improved.

[0017] The utility model discloses a thing mouth is provided with the thing box of liftable, and the thing box is divided into upper thing chamber and lower thing chamber, and the upper thing chamber and lower thing chamber can place experimental instrument or consumable, and the upper thing chamber can be lifted to the inside of operation box, and it is convenient for experimental staff to place some experimental instrument, thereby facilitating experimental personnel to take operation.

[0018] The operation box is relatively sealed with the external environment, preventing the falling of tiny particles due to the vibration of the baffle of the purification table and the problem of the body contact of the experimental staff with the sample.

[0019] The sample preparation device is simple and convenient to operate, high in safety and suitable for various laboratory sample processing requirements. DRAWINGS

[0020] Figure 1 It is the whole structure schematic of the utility model Figure 1 ;

[0021] Figure 2 It is the whole structure schematic of the utility model Figure 2 ;

[0022] Figure 3 It is the structure schematic of operation box Figure 1 ;

[0023] Figure 4 It is the structure schematic of operation box Figure 2 ;

[0024] Figure 5 It is the structure schematic of thing box Figure 1 ;

[0025] Figure 6 It is the structure schematic of thing box Figure 2 ;

[0026] Figure 7 It is the structure schematic of one-way exhaust mechanism;

[0027] Figure 8 It is the structure schematic of operation mouth sealing mechanism;

[0028] Figure 9 It is the structure schematic of air inlet filtering mechanism Figure 1 ;

[0029] Figure 10 It is the structure schematic of air inlet filtering mechanism Figure 2 ;

[0030] The symbols of various components are as follows:

[0031] 1, operation box;11, negative pressure exhaust port;12, air inlet;13, thing mouth;14, left operation mouth;15, right operation mouth;16, first locking screw

[0032] 2. One-way exhaust mechanism; 21. Exhaust pipe; 22. Exhaust support; 23. Exhaust rod; 24. Exhaust cover; 25. Reset spring; 26. First limiting part;

[0033] 3. Intake filter mechanism; 31. High-efficiency air filter; 32. Magnetic baffle; 33. Handle; 34. Sealing frame;

[0034] 4. Storage box; 41. Transverse partition; 42. Front storage opening; 43. Top storage opening; 44. Vertical partition; 45. Second limiting part;

[0035] 5. Operation port sealing mechanism; 51. Left shielding cover; 52. Right shielding cover; 53. Connecting plate; 54. Second locking screw; 55. Fixed threaded sleeve; 56. Sealing rubber pad. DETAILED DESCRIPTION

[0036] The specific embodiments of the present application are described below to facilitate the understanding of the present application for those skilled in the art, but it should be clear that the present application is not limited to the scope of the specific embodiments, and for those skilled in the art, any changes within the spirit and scope of the present application as defined and determined by the appended claims are obvious, and all the utility model creations utilizing the concept of the present application are within the scope of protection.

[0037] As Figure 1 , 2As shown in FIGS. 3 and 4, the sample preparation device comprises an operation box 1, a negative pressure exhaust port 11 is arranged on the left side of the operation box 1, a one-way exhaust mechanism 2 is arranged on the negative pressure exhaust port 11, the one-way exhaust mechanism 2 is used to realize one-way exhaust operation, an exhaust pipe 21 is fixed outside the negative pressure exhaust port 11, the inner diameter of the exhaust pipe 21 is larger than the diameter of the negative pressure exhaust port 11, an exhaust fan is arranged in the exhaust pipe 21, and the exhaust fan is arranged at the outlet side end of the exhaust pipe 21, so that the exhaust fan cooperates with the exhaust pipe 21 and the one-way exhaust mechanism 2 to remove harmful gas generated in the sample preparation process, and the safety of the operator and the cleanliness of the sample preparation environment are ensured. An air inlet 12 is arranged on the right side of the operation box 1, an air inlet filtering mechanism 3 is arranged on the air inlet 12, the air inlet filtering mechanism 3 is used to filter the air entering the operation box, and prevents external pollutants from entering. A storage port 13 is arranged on the top of the operation box 1, a liftable storage box 4 is arranged in the storage port 13, a plurality of first locking screws 16 for fixing the storage box 4 are arranged on the storage port 13, a plurality of grooves matched with the first locking screws 16 are arranged on the storage box 4, the storage box 4 is fixed at different heights on the storage port 13 through the clamping of the first locking screws 16 and different grooves. A left operation port 14 and a right operation port 15 are arranged on the front side of the operation box 1, operation port sealing mechanisms 5 are arranged on the left operation port 14 and the right operation port 15, the operation port sealing mechanisms 5 are used to separate or communicate the control left operation port 14 and the right operation port 15 with the outside, the left operation port 14 and the right operation port 15 are both circular ports with a diameter of 15 cm, sealing rubber rings are arranged on the left operation port 14 and the right operation port 15, the sealing rubber rings are in the shape of a circular truncated cone, the large end of the sealing rubber ring is sealingly connected with the operation port, and the sealing rubber ring can be tightly attached to the arm part of the experimenter, which is beneficial to ensure the sealing property of the internal environment of the operation box 1. A temperature-adjustable electric heating plate is arranged on the inner side of the bottom of the operation box 1, which is used for heating, digestion, and evaporation treatment of the sample.

[0038] As Figure 5 and 6As shown, the storage box 4 is provided with a transverse partition 41, which separates the storage box 4 into an upper storage cavity and a lower storage cavity. The upper storage cavity is provided with a top storage opening 43, and the upper storage cavity is provided with a vertical partition 44. The lower storage cavity is provided with a front storage opening 42. The top of the storage box 4 is provided with a second limiting part 45 matched with the storage opening 13. Specifically, the upper storage cavity and the lower storage cavity are of the same size. The storage opening 13 is provided with an extension part matched with the storage box 4, and the extension part is equal to half of the height of the storage box 4. The cross sections of the storage opening 13 and the storage box 4 are preferably rectangular. The storage box 4 can slide on the extension part of the storage opening 13. When the storage box 4 slides to the bottom, the lower storage cavity is located in the operation box 1. At this time, the experimental instruments are stored in the lower storage cavity through the front storage opening 42, so that the experimental instruments do not occupy the position of the bottom of the operation box, and the experimental instruments are convenient for the experimental staff to take. When the storage box 4 slides to the highest position, the lower storage cavity is lifted to the extension part of the storage opening 13, and the storage box 4 is locked and fixed by a plurality of first locking screws 16, so as to fix the storage box 4 in the storage opening 13. At this time, the lower storage cavity is outside the operation box 1, which can provide an experimental environment with larger space requirement.

[0039] As shown in the drawings, Figure 7 The one-way exhaust mechanism 2 includes a herringbone-shaped exhaust bracket 22, an exhaust rod 23, an exhaust cover 24, a reset spring 25 and a first limiting part 26. The exhaust bracket 22 is fixed on the negative pressure exhaust port 11, and is provided with a guide hole. The exhaust rod 23 is installed in the guide hole, and one end of the exhaust rod 23 is fixedly connected with the exhaust cover 24, and the other end is fixed with the first limiting part 26. The reset spring 25 is arranged on the exhaust rod 23, and one end of the reset spring 25 is supported on the exhaust bracket 22, and the other end is supported on the first limiting part 26. The diameter of the exhaust cover 24 is greater than that of the air inlet of the negative pressure exhaust port 11. The exhaust cover 24 covers the air outlet side of the negative pressure exhaust port 11 in the normal state, and at this time the reset spring 25 is in the uncharged state. Specifically, the fan on the outlet side of the exhaust pipe 21 performs exhaust operation, and a negative pressure is formed in the exhaust pipe 21. At this time, the exhaust cover 24 moves on the exhaust side under the action of the negative pressure. The exhaust cover 24 compresses the reset spring 25 to a suitable balance position through the exhaust rod 23 and the first limiting part 26, so that an exhaust passage is formed between the exhaust cover 24 and the negative pressure exhaust port 11, thereby exhausting the harmful gas in the operation box 1.

[0040] As shown in the drawings, Figure 8As shown, the operation port sealing mechanism 5 includes a left shielding cover 51, a right shielding cover 52, a connecting plate 53 and a second locking screw 54, the left shielding cover 51 is fixedly connected with the right shielding cover 52 through the connecting plate 53, the middle part of the connecting plate 53 is provided with a through hole matched with the second locking screw 54, and the operation box 1 is provided with a fixed threaded sleeve 55 matched with the second locking screw 54. The left shielding cover 51 and the right shielding cover 52 are both provided with a sealing rubber pad 56, and the sealing rubber pad 56 is provided with a sealing protrusion matched with the inner wall of the operation port. Specifically, in normal state, the left shielding cover 51 covers the left operation port 14, the right shielding cover 52 covers the right operation port 15, and the middle part of the connecting plate 53 is fixed by the second locking screw 54 matched with the fixed threaded sleeve 55 to fix the left shielding cover 51, the right shielding cover 52 and the connecting plate 53. When experimental operation is to be carried out through the left operation port 14 and the right operation port 15, the second locking screw 54 is loosened at this time, so that the connecting plate 53 can drive the left shielding cover 51 and the right shielding cover 52 to be pulled out of the operation port. Then, the left shielding cover 51 and the right shielding cover 52 are removed, and after being removed, the left shielding cover 51 and the right shielding cover 52 can be rotated to the vertical direction under the action of gravity, so as not to affect the experimental operation of the experimenter, and the second locking screw 54 can be further used to lock and fix the connecting plate 53 to prevent the left shielding cover 51 and the right shielding cover 52 in the vertical position from rotating.

[0041] As shown in Figure 9 and 10 , the air inlet filtering mechanism 3 includes a high-efficiency air filter 31, a magnetic blocking plate 32 and a sealing frame 34, the high-efficiency air filter 31 is arranged in the air inlet 12, the bottom of the magnetic blocking plate 32 is rotatably connected with the air inlet 12, and the rotatable connection can be realized through a hinge or a hinged end. The magnetic blocking plate 32 can also be connected with the air inlet 12 by using a flexible component that can be bent, and the flexible component can be a rubber block, synthetic fiber or the like. The area of the magnetic blocking plate 32 is larger than the area of the air inlet 12, and the air inlet side of the air inlet 12 is provided with a sealing frame 34 matched with the magnetic blocking plate 32, and the magnetic blocking plate 32 is magnetically connected with the sealing frame 34. A handle 33 is arranged on the magnetic blocking plate 32, which facilitates the turning operation of the magnetic blocking plate 32 by the handle 33, so as to shield the air inlet 12 by the magnetic blocking plate 32 and realize the relative sealing space of the operation box. Specifically, when the one-way exhaust mechanism 2 is needed to cooperate with the exhaust, the magnetic blocking plate 32 is turned down, so that the magnetic blocking plate 32 cannot cover the air inlet 12, so that the operation box is communicated with the outside through the high-efficiency air filter 31, the air inlet filtering is realized, and the experimental environment in the operation box is ensured. When the one-way exhaust mechanism 2 is not needed to cooperate with the exhaust, and when a relatively sealed experimental environment in the operation box is needed, the magnetic blocking plate 32 is folded to the vertical position at this time, and the air inlet 12 is shielded and sealed by the magnetic attraction of the magnetic blocking plate 32 and the sealing frame 34.

[0042] Working process and its principle: before the experiment, loosen the second locking screw 54, take off the left cover 51 and the right cover 52, and rotate the left cover 51, the right cover 52 and the connecting plate 53 to the vertical position, so that the operator can operate the experimental work in the box through the left operation port 14 and the right operation port 15. During the experiment, the position of the storage box 41 can be adjusted to facilitate the placement of some experimental instruments, so as to facilitate the use of the experimental staff. In the process of experiment, open the air inlet filter mechanism 3, effectively isolate the particles dust and suspended solids in the air, ensure that the operating table environment has very low background; open the one-way exhaust mechanism 2, discharge the toxic gas generated in the process of sample preparation, so as to ensure the safety of the experimenters and the background of the prepared samples. During the experiment, the experimenter puts the sample into the operation box 1 through the glove, and carries out digestion, evaporation and medium conversion operation, avoiding the influence of environmental factors introduced by open operation.

Claims

1. A sample preparation device, characterized by, Including operation box (1), the left side of operation box (1) is provided with negative pressure exhaust port (11), negative pressure exhaust port (11) is provided with one-way exhaust mechanism (2); The right side of the operation box (1) is provided with an air inlet (12), and the air inlet (12) is provided with an air inlet filtering mechanism (3); The top of the operation box (1) is provided with a storage opening (13), and the storage opening (13) is provided with a storage box (4) which can be lifted, and the storage opening (13) is provided with a plurality of first locking screws (16) for fixing the storage box (4); The front side of the operation box (1) is provided with left operation opening (14) and right operation opening (15), and the left operation opening (14) and right operation opening (15) are provided with operation opening sealing mechanism (5).

2. The sample preparation device of claim 1, wherein, The one-way exhaust mechanism (2) comprises a herringbone exhaust support (22), an exhaust rod (23), an exhaust cover (24), a reset spring (25) and a first limiting portion (26), the exhaust support (22) is fixed on the negative pressure exhaust port (11), the exhaust support (22) is provided with a guide hole, the exhaust rod (23) is installed in the guide hole, one end of the exhaust rod (23) is fixedly connected with the exhaust cover (24), the other end is fixed with the first limiting portion (26), the reset spring (25) is arranged on the exhaust rod (23), one end of the reset spring (25) is supported on the exhaust support (22), and the other end is supported on the first limiting portion (26).

3. The sample preparation device of claim 2, wherein, The outside of the negative pressure exhaust port (11) is fixedly provided with an exhaust pipe (21), the exhaust pipe (21) is provided with an exhaust fan, and the inner diameter of the exhaust pipe (21) is greater than the diameter of the negative pressure exhaust port (11).

4. The sample preparation device of claim 2, wherein, The diameter of the exhaust cover (24) is greater than the diameter of the air inlet of the negative pressure exhaust port (11), and the exhaust cover (24) covers the air outlet side of the negative pressure exhaust port (11) in normal state.

5. The sample preparation device of claim 1, wherein, The air inlet filtering mechanism (3) comprises a high-efficiency air filter (31), a magnetic baffle (32) and a sealing frame (34), the high-efficiency air filter (31) is arranged in the air inlet (12), the bottom of the magnetic baffle (32) is rotatably connected with the air inlet (12), the area of the magnetic baffle (32) is greater than the area of the air inlet (12), the air inlet side of the air inlet (12) is provided with a sealing frame (34) matched with the magnetic baffle (32), and the magnetic baffle (32) and the sealing frame (34) are magnetically connected.

6. The sample preparation device of claim 1, wherein, The storage box (4) is provided with a horizontal partition (41), the horizontal partition (41) divides the storage box (4) into an upper placing cavity and a lower placing cavity, the top of the upper placing cavity is provided with a top storage opening (43), the upper placing cavity is provided with a vertical partition (44), and the front side of the lower placing cavity is provided with a front storage opening (42); The top of the storage box (4) is provided with a second limiting portion (45) matched with the storage opening (13).

7. The sample preparation device of claim 1, wherein, The operation port sealing mechanism (5) comprises a left shielding cover (51), a right shielding cover (52), a connecting plate (53) and a second locking screw (54), the left shielding cover (51) is fixedly connected with the right shielding cover (52) through the connecting plate (53), the middle part of the connecting plate (53) is provided with a through hole matched with the second locking screw (54), and the operation box (1) is provided with a fixed threaded sleeve (55) matched with the second locking screw (54).

8. The sample preparation device of claim 7, wherein, The left shielding cover (51) and the right shielding cover (52) are both provided with a sealing rubber pad (56), and the sealing rubber pad (56) is provided with a sealing protrusion matched with the inner wall of the operation port.

9. The sample preparation device of claim 1, wherein, The left operation port (14) and the right operation port (15) are provided with a sealing rubber ring, the sealing rubber ring is in the shape of a circular truncated cone, and the large end of the sealing rubber ring is sealingly connected with the operation port.

10. The sample preparation device of claim 1, wherein, The storage box (4) is provided with a plurality of grooves matched with the first locking screw (16).

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