Concentration device for preventing vacuum loss through sample single-point control

Abstract

The utility model discloses a sample single-point control vacuum loss prevention concentration device which comprises a parallel concentrator, a container rack for accommodating a sample container and a gland arranged on a pot cover corresponding to the sample container, wherein the container rack is arranged in a water bath pot of the parallel concentrator; a bottle plug of the sample container is provided with a shaft hole, a plug core corresponding to the shaft hole is elastically arranged on the bottle plug through an elastic piece, and the plug core can overcome the vacuum pressure of the sample container through the elastic force to plug the shaft hole; a guide pipe connected with a vacuumizing pipe through a valve body penetrates through the gland, and the water bath kettle drives the guide pipe to penetrate through the shaft hole to push away the plug core in a box cover state. According to the utility model, the plug core is elastically arranged in the shaft hole of the bottle plug and the valve body is connected to the vacuumizing pipe, so that independent single-point control of the sample container is realized, and the sample container and the vacuumizing pipe can be prevented from losing vacuum pressure when the cover is opened.

Description

Technical Field

[0001] The utility model belongs to the technical field of sample concentration equipment, and particularly relates to a concentration device for single-point control of samples to prevent loss of vacuum. Background Art

[0002] The constant volume of the existing parallel concentrator is not completed synchronously. Instead, after the constant volume of some samples is completed, they need to be taken out first, and then the subsequent samples are subjected to constant volume concentration treatment after re-evacuating. Each time the cover is opened, the sample container loses vacuum and the vacuum tube loses pressure. It is necessary to re-evacuate, which consumes a lot of time and affects the sample concentration efficiency. Summary of the Invention

[0003] Object of the Invention: In order to overcome the deficiencies in the prior art, the utility model provides a concentration device for single-point control of samples to prevent loss of vacuum. By elastically arranging a plug core in the shaft hole of the bottle stopper and connecting a valve body to the vacuum extraction tube, separate single-point control of the sample container is realized, and the loss of vacuum pressure of the sample container and the vacuum tube can be avoided when the cover is opened.

[0004] Technical Solution: To achieve the above object, the concentration device for single-point control of samples to prevent loss of vacuum of the utility model includes a parallel concentrator. The water bath of the parallel concentrator is internally provided with a container rack for accommodating sample containers, and the pot cover is provided with a pressing cover corresponding to the sample containers.

[0005] The bottle stopper of the sample container is provided with a shaft hole, and a plug core is elastically arranged corresponding to the shaft hole on the bottle stopper through an elastic member. The plug core can block the shaft hole by the elastic force it receives to overcome the vacuum pressure of the sample container.

[0006] The pressing cover is provided with a conduit connected to the vacuum extraction tube through a valve body. When the water bath is in the state of covering the box, the conduit is driven to pass through the shaft hole and push open the plug core.

[0007] Further, an air inlet is provided at the air inlet end of the conduit. When the conduit passes through the shaft hole and pushes open the plug core, the sample container is communicated with the conduit through the air inlet, and the pressing cover presses down against the bottle stopper.

[0008] Further, the plug core is composed of an embedded plug body and a sealing plug body integrally formed. The diameter of the embedded plug body is adapted to the aperture of the shaft hole, and the diameter of the sealing plug body is larger than that of the embedded plug body. When the plug core blocks the shaft hole by the elastic force it receives to overcome the vacuum pressure of the sample container, the embedded plug body is embedded from the air outlet end of the shaft hole to the sealing plug body to block the air outlet end of the shaft hole.

[0009] Further, the elastic members are several, and the several elastic members are distributed in a circumferential array around the plug core.

[0010] Further, the valve body is an electric valve.

[0011] Furthermore, an opening and closing cover driving part is connected between the pot cover and the water bath pot, and the opening and closing cover driving part drives the pot cover to vertically lift relative to the water bath pot for opening and closing cover cooperation.

[0012] Beneficial effects: When opening the cover, the plug core can automatically block the shaft hole under the action of elastic force, so as to avoid the sample container losing vacuum pressure when opening the cover, and the valve body closing to avoid the vacuum tube losing vacuum pressure. By elastically arranging the plug core in the shaft hole of the bottle stopper and connecting the valve body to the vacuum extraction tube, individual single-point control of each sample container is realized, avoiding the time-consuming of repeated vacuum extraction and improving the efficiency of sample concentration treatment. Description of the Drawings

[0013] Attached Figure 1 is a schematic diagram of the overall structure of the present invention;

[0014] Attached Figure 2 is an enlarged schematic diagram of the structure of area A in the attached Figure 1 ;

[0015] Attached Figure 3 is a schematic diagram of the overall structure in the state where the catheter passes through the shaft hole and pushes the plug core away;

[0016] Attached Figure 4 is a half-sectional schematic diagram in the state where the plug core blocks the shaft hole. Specific Embodiments

[0017] The present invention will be further described below with reference to the drawings.

[0018] As shown in the attached Figure 1 , attached Figure 2 , attached Figure 3 and attached Figure 4As shown in the figure, a concentration device for single-point control of samples to prevent vacuum loss includes a parallel concentrator. The water bath 1 of the parallel concentrator is internally provided with a container rack 4 for accommodating sample containers 5, and the pot lid 2 is provided with a gland 7 corresponding to the sample container 5. A shaft hole 60 is opened on the stopper 6 of the sample container 5, and a plug core 11 is elastically arranged on the stopper 6 corresponding to the shaft hole 60 through an elastic member 12. The plug core 11 can block the shaft hole 60 by overcoming the vacuum pressure of the sample container 5 with the elastic force it receives. When opening the lid, the plug core 11 can automatically block the shaft hole 60 under the action of the elastic force, thereby preventing the sample container from losing vacuum pressure when opening the lid. A conduit 10 connected to a vacuum tube 9 through a valve body 8 is penetrated through the gland 7. When the water bath 1 is in the state of closing the lid, it drives the conduit 10 to pass through the shaft hole 60 and push open the plug core 11. At this time, the valve body 8 is opened to perform the sample concentration gas guiding operation under normal conditions. When opening the lid, the valve body 8 is closed to prevent the vacuum tube 9 from losing vacuum pressure. Therefore, in the open-lid state, by elastically arranging the plug core 11 in the shaft hole 60 of the stopper 6 and connecting the valve body 8 to the vacuum tube 9, single-point control of each sample container 5 is realized, avoiding the time-consuming of repeated vacuum pumping and improving the efficiency of sample concentration processing.

[0019] After realizing single-point control of the sample container 5, when the sample with fixed volume is taken out with the lid open, other sample containers 5 and the vacuum tube 9 will not lose vacuum, and there is no influence on each other. There is no need to pump vacuum again, thereby improving the efficiency of sample concentration processing.

[0020] As shown in the appendix Figure 2 As shown in the figure, an air inlet 10a is opened at the air inlet end of the conduit 10. When the conduit 10 passes through the shaft hole 60 and pushes open the plug core 11, the sample container 5 is communicated with the conduit 10 through the air inlet 10a to perform normal introduction under the concentration operation state. The gland 7 presses down against the stopper 6 to press and position the sample container 5.

[0021] As shown in the appendix Figure 4 As shown in the figure, the plug core 11 is composed of an embedded plug body 11a and a sealing plug body 11b formed integrally. The diameter of the embedded plug body 11a is adapted to the aperture of the shaft hole 60, and the diameter of the sealing plug body 11b is larger than that of the embedded plug body 11a. When the plug core 11 blocks the shaft hole 60 by overcoming the vacuum pressure of the sample container 5 with the elastic force it receives, the embedded plug body 11a is embedded from the air outlet end of the shaft hole 60 to the sealing plug body 11b to block the air outlet end of the shaft hole 60. The plug core 11 is designed with a two-section structure, which improves the sealing effect while increasing the length. And the elastic member 12 selects a spring with sufficient elastic force to ensure that the plug core 11 can block the shaft hole 60 by overcoming the vacuum pressure of the sample container 5 under the condition of its two-section structure design and the sufficient elastic force it receives.

[0022] More specifically, the plugging plug body 11b is provided with a lower connecting part 13, the bottle stopper 6 is provided with an upper connecting part 14, and the two ends of the spring are respectively connected to the lower connecting part 13 and the upper connecting part 14.

[0023] As shown in the appendix Figure 3 As shown, in order to ensure that the plug core 11 is in an axially displaced state without skew when displaced, the elastic members 12 are several, and the several elastic members 12 are distributed in a circumferential array around the plug core 11, and the elastic force received is more uniform.

[0024] Preferably, the valve body 8 is an electric valve.

[0025] A lid opening and closing driving part 3 is connected between the pot lid 2 and the water bath pot 1. The lid opening and closing driving part 3 drives the pot lid 2 to be vertically lifted and lowered relative to the water bath pot 1 for opening and closing lid cooperation. The lid opening and closing driving part 3 can be an electric push rod, a cylinder and other devices with the function of realizing lifting by pushing and pulling.

[0026] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A concentrating device for single-point control of samples to prevent vacuum loss, comprising a parallel concentrator, wherein a water bath pot (1) of the parallel concentrator has a built-in container rack (4) for accommodating a sample container (5), and a pot cover (2) is provided with a pressure cover (7) corresponding to the sample container (5); Features: The bottle stopper (6) of the sample container (5) is provided with an axial hole (60), and a plug core (11) is elastically provided on the bottle stopper (6) corresponding to the axial hole (60) through an elastic member (12), and the plug core (11) can overcome the vacuum pressure of the sample container (5) by the elastic force applied thereto to seal the axial hole (60); The gland (7) is provided with a conduit (10) connected to a vacuum tube (9) through a valve body (8). When the water bath (1) is in the box cover state, the conduit (10) is driven to pass through the shaft hole (60) to push open the plug core (11).

2. The sample single-point control to prevent vacuum loss concentrator according to claim 1, characterized in that: The air inlet end of the conduit (10) is provided with an air inlet (10a). When the conduit (10) passes through the axial hole (60) and pushes open the plug core (11), the sample container (5) is connected to the conduit (10) through the air inlet (10a), and the pressure cover (7) is pressed down against the bottle plug (6).

3. The sample single-point control to prevent vacuum loss concentrator according to claim 1, characterized in that: The plug core (11) is composed of an embedded plug body (11a) and a sealing plug body (11b) which are integrally formed. The diameter of the embedded plug body (11a) is adapted to the aperture of the axial hole (60), and the diameter of the sealing plug body (11b) is larger than the diameter of the embedded plug body (11a). When the plug core (11) overcomes the vacuum pressure of the sample container (5) by the elastic force it receives and seals the axial hole (60), the embedded plug body (11a) is embedded from the air outlet end of the axial hole (60) to the sealing plug body (11b) to block the air outlet end of the axial hole (60).

4. The sample single-point control to prevent vacuum loss concentrator according to claim 1, characterized in that: There are a plurality of elastic members (12), and the plurality of elastic members (12) are distributed in a circular array around the plug core (11).

5. The sample single-point control to prevent vacuum loss concentrator according to claim 1, characterized in that: The valve body (8) is an electric valve.

6. The sample single-point control to prevent vacuum loss concentrator according to claim 1, characterized in that: An opening and closing cover driving unit (3) is connected between the pot cover (2) and the water bath pot (1), and the opening and closing cover driving unit (3) drives the pot cover (2) to vertically lift and lower relative to the water bath pot (1) to open and close the cover in coordination.

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