Vacuum sealing device for laboratory

Abstract

The utility model discloses a vacuum sealing device for a laboratory, and belongs to the field of sealing. A vacuum sealing device for a laboratory comprises a driving device and a workbench and further comprises a sealing unit arranged on the driving device, and the driving device can drive the sealing unit in the vertical direction; the positioning unit and the sealing unit are arranged on the workbench, and the sealing unit can move up and down in a reciprocating mode along the positioning unit and the sealing unit and is used for sealing and sealing objects; the exhaust pipe is arranged on the driving equipment and used for exhausting air from the articles, and the driving equipment is used for driving the exhaust pipe to extend or contract; the problems that a sealing bag is low in air exhaust efficiency and poor in sealing effect can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing of experimental appliances, in particular to a vacuum sealing device for laboratories. Background Art

[0002] Laboratory samples usually need to be placed in a sealed bottle, and then the sealed bottle is placed in a sealed bag. The sealed bag is evacuated, and after the evacuation is completed, it is sealed. However, during the sealing process, external air can easily enter the sealed bag, resulting in poor sealing effect of the sealed bag; moreover, when evacuating the sealed bag, it is difficult to ensure the sealing between the sealed bag and the evacuation equipment, resulting in low evacuation efficiency of the sealed bag.

[0003] Especially in the analysis laboratory of semiconductor chemicals, the detection content level reaches ultra-trace amounts. Slight contamination of the sample will have a great impact on the test results. Therefore, many samples in the laboratory need to be sealed or sent by sealed samples. In order to protect the samples, and the sealed samples are first placed in sample bags or sample bottles. Sealing is for isolating air to prevent the sample from contacting oxygen, and for convenient sending and storage; high-precision analysis tests have high requirements for samples and belong to ultra-trace level detection and analysis. The sample cannot be contaminated at any link, otherwise there will be uncertainty in the test results. Eliminating the adverse factors in the process can obtain more accurate test results. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems of poor evacuation effect and inability to seal in one step of the existing sealed bag, and to propose a vacuum sealing device for laboratories.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A vacuum sealing device for laboratories includes a driving device and a workbench, and further includes: a sealing unit arranged on the driving device, and the driving device can drive the sealing unit in the vertical direction; a positioning unit and a sealing unit arranged on the workbench, and the sealing unit can reciprocate up and down along the positioning unit and the sealing unit for sealing and closing the article; an evacuation pipe arranged on the driving device for evacuating the article, and the driving device is used to drive the evacuation pipe to extend or contract.

[0007] In order to facilitate simultaneous evacuation and sealing of the sealed bag, preferably, a plurality of fixing members of the sealing unit are arranged on the driving device. One end of the fixing member away from the driving device is fixedly connected with a connecting member. A plurality of fixing grooves are formed on the side of the connecting member away from the fixing member. Among them, a sealing fixing mechanism is arranged on the connecting member, and a pressing mechanism is arranged in the fixing groove.

[0008] To ensure the stability when sealing the sealing bag, further, the sealing and fixing mechanism includes multiple groups of first sliding rods slidably connected to the connecting member. At least a part of the bottom end of the first sliding rod extends to the outside of the connecting member. A pressing rod is fixedly connected to the bottom end of the first sliding rod. A first spring is fixedly connected between the pressing rod and the connecting member. A first installation groove is formed on the side of the pressing rod away from the first sliding rod. A pressing strip is arranged inside the first installation groove. Among them, the first spring is sleeved on the first sliding rod, and at least a part of the pressing strip extends to the outside of the first installation groove.

[0009] To ensure the airtightness when the sealing bag is evacuated, furthermore, the pressing mechanism includes multiple groups of installation blocks connected in the fixed groove. A second sliding rod is slidably connected to the installation block. A upper positioning rod is fixedly connected to the bottom end of the second sliding rod. A second spring is fixedly connected between the upper positioning rod and the installation block. A second installation groove is formed on the side of the upper positioning rod away from the second sliding rod. An upper cushion strip is arranged inside the second installation groove. Among them, the second spring is sleeved on the second sliding rod, and at least a part of the upper cushion strip extends to the outside of the second installation groove, and the upper cushion strip is located on the plane below the pressing strip.

[0010] To ensure the stability of the seal when the sealing bag is evacuated, furthermore, the positioning unit includes a fixed pipe fixedly connected to the workbench. A lower positioning rod is fixedly connected to the side of the fixed pipe away from the driving device. A third installation groove is formed in the lower positioning rod. A lower cushion strip is arranged in the third installation groove. Among them, the lower cushion strip is located below the upper cushion strip and has a matching size.

[0011] To facilitate sealing the sealing bag, furthermore, the sealing unit includes heating devices symmetrically and fixedly connected to the workbench. A sealer is arranged between the two groups of heating devices. Among them, the sealer is located below the pressing strip, and the upper surface of the sealer is on the same plane as the upper surface of the lower cushion strip.

[0012] To ensure the stability of the equipment operation, further, it also includes a first through hole formed in the driving device and matching the fixing part, and a second through hole matching the air extraction pipe. The fixing part extends from the first through hole to the inside of the driving device, and the air extraction pipe extends from the second through hole to the inside of the driving device.

[0013] To facilitate airtight evacuation of the sealing bag, further, the air extraction pipe is located above the sealer and the lower cushion strip, and one end of the air extraction pipe close to the sealer and the lower cushion strip is flat.

[0014] Compared with the prior art, the present utility model provides a vacuum sealing device for laboratory use, having the following beneficial effects:

[0015] 1. The vacuum sealing device for the laboratory can drive the pressing mechanism to fix the sealing bag on the positioning unit through the driving device, and evacuate the sealing bag through the suction pipe, so as to ensure the sealing performance of the sealing bag during evacuation, reduce the entry of external gas into the sealing bag during evacuation, and thus improve the evacuation efficiency of the sealing bag.

[0016] 2. The vacuum sealing device for the laboratory can seal the sealing bag through the sealing and fixing mechanism and the sealing unit, and during sealing, the sealing bag can be sealed through the pressing mechanism and the positioning unit, so as to reduce the entry of gas into the sealing bag during sealing, thereby improving the sealing effect of the sealing bag, effectively reducing the risk of the experimental product being contaminated during transportation, and having higher safety.

[0017] The parts not involved in this device are the same as the prior art or can be implemented by the prior art. The utility model can overcome the problems of low evacuation efficiency and poor sealing effect of the sealing bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a vacuum sealing device for a laboratory proposed by the utility model.

[0019] Figure 2 It is a schematic side view structural diagram of a vacuum sealing device for a laboratory proposed by the utility model.

[0020] Figure 3 It is a schematic diagram of a partial structure of a vacuum sealing device for a laboratory proposed by the utility model Figure 1 。

[0021] Figure 4 It is a schematic diagram of a partial structure of a vacuum sealing device for a laboratory proposed by the utility model Figure 2 。

[0022] In the figure: 1. Driving device; 2. Control panel; 3. Workbench; 4. First through hole; 5. Fixing piece; 6. Connecting piece; 7. First sliding rod; 8. First spring; 9. Pressing rod; 10. First installation groove; 11. Pressing strip; 12. Fixing groove; 13. Installation block; 14. Second sliding rod; 15. Second spring; 16. Upper positioning rod; 17. Second installation groove; 18. Upper cushion strip; 19. Heating device; 20. Sealer; 21. Fixed pipe; 22. Lower positioning rod; 23. Third installation groove; 24. Lower cushion strip; 25. Second through hole; 26. Suction pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0025] Embodiment:

[0026] Refer to Figures 1-4 , a vacuum sealing device for laboratory use, comprising a driving device 1 and a workbench 3. Inside the driving device 1, there is a device for driving the fixing member 5 to move up and down reciprocally, as well as an air extraction device communicated with the air extraction pipe 26 and a device for driving the air extraction pipe 26 and the air extraction device to extend and contract. Devices such as air cylinders and hydraulic cylinders can be used, which are conventional means in the prior art and will not be elaborated here. A control panel 2 is also provided on the driving device 1 for controlling various devices inside the driving device 1 to improve the automation degree of the device, thereby improving the efficiency of vacuum sealing. It further includes: a sealing unit provided on the driving device 1, and the driving device 1 can drive the sealing unit in the vertical direction; a positioning unit and a sealing unit provided on the workbench 3, and the sealing unit can move up and down reciprocally along the positioning unit and the sealing unit for sealing and closing the article; an air extraction pipe 26 provided on the driving device 1 for extracting air from the article, and the driving device 1 is used to drive the air extraction pipe 26 to extend or contract.

[0027] Refer to Figures 1-3 , a plurality of fixing members 5 of the sealing unit are provided on the driving device 1. One end of the fixing member 5 far from the driving device 1 is fixedly connected with a connecting member 6. A plurality of fixing grooves 12 are provided on the side of the connecting member 6 far from the fixing member 5. Among them, a sealing and fixing mechanism is provided on the connecting member 6, and a pressing mechanism is provided in the fixing groove 12.

[0028] The connecting member 6 and the fixing member 5 can adopt a bolt fixing method. By installing the pressing mechanism in different fixing grooves 12, the pressure between the pressing mechanism and the positioning unit during the operation of the device can be adjusted. While ensuring the sealing effect of the sealing bag, the wear between the devices and the damage to the air extraction pipe 26 can be reduced. As the number of times the device is used increases, the elasticity of the second spring 15 will weaken, thereby reducing the replacement frequency of the second spring 15.

[0029] Refer to Figures 2-3, the sealing and fixing mechanism includes multiple groups of first sliding rods 7 slidably connected to the connecting member 6. At least part of the bottom end of the first sliding rod 7 extends to the outside of the connecting member 6. A pressing rod 9 is fixedly connected to the bottom end of the first sliding rod 7. A first spring 8 is fixedly connected between the pressing rod 9 and the connecting member 6. A first installation groove 10 is formed on the side of the pressing rod 9 away from the first sliding rod 7. A pressing strip 11 is arranged inside the first installation groove 10. Among them, the first spring 8 is sleeved on the first sliding rod 7, and at least part of the pressing strip 11 extends to the outside of the first installation groove 10.

[0030] The top end of the first sliding rod 7 can be limited by setting bolts or structures with relatively large dimensions to prevent the first sliding rod 7 from detaching from the connecting member 6 during use and ensure the stability of the equipment operation. In addition, the number of the first sliding rods 7 is not limited as long as the stability of the pressing rod 9 during movement can be ensured.

[0031] Refer to Figure 3 , the pressing mechanism includes multiple groups of installation blocks 13 connected in the fixing groove 12. A second sliding rod 14 is slidably connected to the installation block 13. A top positioning rod 16 is fixedly connected to the bottom end of the second sliding rod 14. A second spring 15 is fixedly connected between the top positioning rod 16 and the installation block 13. A second installation groove 17 is formed on the side of the top positioning rod 16 away from the second sliding rod 14. An upper cushion strip 18 is arranged inside the second installation groove 17. Among them, the second spring 15 is sleeved on the second sliding rod 14, and at least part of the upper cushion strip 18 extends to the outside of the second installation groove 17, and the upper cushion strip 18 is located on the plane below the pressing strip 11.

[0032] The top end of the second sliding rod 14 can be set in the same way as the top end of the first sliding rod 7 to limit the top end of the second sliding rod 14 to ensure the stability of the second sliding rod 14 during operation. In addition, the upper cushion strip 18 is located on the plane below the pressing strip 11 to enable the upper cushion strip 18 to achieve stroke movement. That is, when the upper cushion strip 18 descends to closely fit with the lower cushion strip 24 and the pressing strip 11 does not contact the sealer 20, only the air in the sealed bag is evacuated and sealed. When the upper cushion strip 18 continues to move downward, the pressing strip 11 will closely fit with the sealer 20 to achieve sealed sealing of the sealed bag to ensure the vacuum sealing effect of the sealed bag.

[0033] Refer to Figure 1 , Figure 2 and Figure 4 , the positioning unit includes a fixed pipe 21 fixedly connected to the workbench 3. A bottom positioning rod 22 is fixedly connected to the side of the fixed pipe 21 away from the driving device 1. A third installation groove 23 is formed on the bottom positioning rod 22. A lower cushion strip 24 is arranged in the third installation groove 23. Among them, the lower cushion strip 24 is located below the upper cushion strip 18 and has a matching size.

[0034] Through the tight fit between the lower cushion strip 24 and the upper cushion strip 18, the sealing of the sealed bag can be achieved. And when the air extraction pipe 26 sucks in air for sealing, under the action of the lower cushion strip 24 and the upper cushion strip 18, the inner wall of the sealed bag can be closely attached to the air extraction pipe 26, thus ensuring the sealing performance of the sealed bag during air extraction and improving the air extraction efficiency of the sealed bag.

[0035] Referring to Figure 4 , the sealing unit includes heating devices 19 symmetrically and fixedly connected to the workbench 3. A sealer 20 is arranged between the two groups of heating devices 19. Among them, the sealer 20 is located below the pressing strip 11, and the upper surface of the sealer 20 and the upper surface of the lower cushion strip 24 are on the same plane.

[0036] It should be explained that the specific structures of the heating device 19 and the sealer 20 can refer to the technical solutions in the prior art, which can be known to those skilled in the art, so no further description will be given. By heating the sealer 20 with the heating device 19, when a certain pressure is applied to the sealed bag on the sealer 20, the sealed bag can be sealed.

[0037] Referring to Figure 1 , it further includes a first through hole 4 opened on the driving device 1 and matching with the fixing member 5, and a second through hole 25 matching with the air extraction pipe 26. The fixing member 5 extends from the first through hole 4 into the interior of the driving device 1, and the air extraction pipe 26 extends from the second through hole 25 into the interior of the driving device 1.

[0038] Referring to Figure 2 , the air extraction pipe 26 is located above the sealer 20 and the lower cushion strip 24, and the end of the air extraction pipe 26 close to the sealer 20 and the lower cushion strip 24 is flat.

[0039] The flat setting of the air extraction pipe 26 can, on the one hand, reduce the pressure on the sealed bag during sealing, thus avoiding the deformation of the air extraction pipe 26 during air extraction. On the other hand, it can reduce the gap between the air extraction pipe 26 and the sealed bag during air extraction of the sealed bag, improving the sealing effect of the sealed bag during air extraction.

[0040] In the present utility model, when air is extracted from the sealed bag, first, the air extraction pipe 26 is extended out of the driving device 1, then the sealed bag is sleeved on the air extraction pipe 26, and the sealed bag is placed on the lower cushion strip 24. Then, the driving device 1 drives the upper cushion strip 18 to move downward and closely fit with the lower cushion strip 24, and at the same time, the pressing strip 11 does not contact the sealer 20. At this time, the upper cushion strip 18 and the lower cushion strip 24 can seal the sealed bag and the air extraction pipe 26, and then air can be extracted from the sealed bag;

[0041] After the air extraction is completed, the air extraction pipe 26 is quickly contracted. During this process, the upper cushion strip 18 is always in close contact with the lower cushion strip 24, that is, the sealed bag is always in a sealed state. Then, the pressing strip 11 is driven by the driving device 1 to move downward again, and the sealed bag is closely attached to the sealing device 20. At this time, the sealed bag can be sealed, and during the whole process, the sealed bag is always in a sealed state, thereby improving the vacuum sealing effect of the sealed bag and preventing the risk of sample contamination during transportation and other situations.

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A vacuum sealing device for laboratory use, comprising a driving device (1) and a workbench (3), characterized in that: Also includes: A sealing unit arranged on the driving device (1), wherein the driving device (1) is capable of driving the sealing unit in a vertical direction; A positioning unit and a sealing unit are arranged on the workbench (3), and the sealing unit can reciprocate up and down along the positioning unit and the sealing unit to seal and seal the article; The air extraction pipe (26) arranged on the driving device (1) is used to extract air from the object, and the driving device (1) is used to drive the air extraction pipe (26) to extend or contract.

2. A laboratory vacuum sealing device according to claim 1, characterized in that: The sealing unit is provided with a plurality of sets of fixing members (5) on the driving device (1), one end of the fixing member (5) away from the driving device (1) is fixedly connected to a connecting member (6), and a side of the connecting member (6) away from the fixing member (5) is provided with a plurality of sets of fixing grooves (12), Wherein, a sealing and fixing mechanism is provided on the connecting piece (6), and a pressing mechanism is provided in the fixing groove (12).

3. A laboratory vacuum sealing device according to claim 2, characterized in that: The sealing fixing mechanism comprises a plurality of first sliding rods (7) slidably connected to the connecting member (6), the bottom ends of the first sliding rods (7) at least partially extending to the outside of the connecting member (6), the bottom ends of the first sliding rods (7) are fixedly connected to a pressure rod (9), a first spring (8) is fixedly connected between the pressure rod (9) and the connecting member (6), a first mounting groove (10) is provided on a side of the pressure rod (9) away from the first sliding rod (7), and a pressure strip (11) is provided inside the first mounting groove (10), Wherein, the first spring (8) is sleeved on the first sliding rod (7), and the pressure strip (11) at least partially extends to the outside of the first installation groove (10).

4. A laboratory vacuum sealing device according to claim 3, characterized in that: The clamping mechanism comprises a plurality of mounting blocks (13) connected in the fixing groove (12), a second slide bar (14) being slidably connected to the mounting block (13), an upper positioning rod (16) being fixedly connected to the bottom end of the second slide bar (14), a second spring (15) being fixedly connected between the upper positioning rod (16) and the mounting block (13), a second mounting groove (17) being provided on a side of the upper positioning rod (16) away from the second slide bar (14), an upper pad strip (18) being provided inside the second mounting groove (17), The second spring (15) is sleeved on the second slide bar (14), the upper pad (18) at least partially extends to the outside of the second mounting groove (17), and the upper pad (18) is located on a plane below the pressure strip (11).

5. A laboratory vacuum sealing device according to claim 4, characterized in that: The positioning unit comprises a fixing tube (21) fixedly connected to the workbench (3); a lower positioning rod (22) is fixedly connected to a side of the fixing tube (21) away from the driving device (1); a third mounting groove (23) is provided on the lower positioning rod (22); a lower padding strip (24) is provided in the third mounting groove (23); The lower pad (24) is located below the upper pad (18) and has matching sizes.

6. A laboratory vacuum sealing device according to claim 5, characterized in that: The sealing unit comprises heating devices (19) symmetrically fixedly connected to the workbench (3), and a sealer (20) is arranged between two groups of the heating devices (19). The sealer (20) is located below the pressure strip (11), and the upper surface of the sealer (20) and the upper surface of the lower pad (24) are located on the same plane.

7. A laboratory vacuum sealing device according to claim 2, characterized in that: It also includes a first through hole (4) formed on the driving device (1) and matching the fixing member (5), and a second through hole (25) matching the exhaust pipe (26); the fixing member (5) extends from the first through hole (4) to the interior of the driving device (1), and the exhaust pipe (26) extends from the second through hole (25) to the interior of the driving device (1).

8. A laboratory vacuum sealing device according to claim 6, characterized in that: The air extraction pipe (26) is located above the sealer (20) and the lower pad (24), and one end of the air extraction pipe (26) close to the sealer (20) and the lower pad (24) is flat.

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