Heatable nitrogen purging device

Abstract

The utility model belongs to the technical field of nitrogen purging devices, and particularly relates to a heatable nitrogen purging device which comprises a purging instrument main body, a control panel is fixedly mounted on one side of the purging instrument main body, gas delivery pipes are uniformly arranged at the top end of the purging instrument main body, the bottom ends of the gas delivery pipes are connected with moving pipes, and the moving pipes are connected with the control panel. The purging instrument comprises a purging instrument main body, the purging instrument main body is provided with a plurality of movable pipes, the inner walls of the movable pipes are provided with mitigation assemblies, the outer walls of the movable pipes are provided with lifting assemblies, the bottom ends of the movable pipes are fixedly provided with gas needles, and one side of the purging instrument main body is provided with a water bath mechanism. The flow limiting plates are mutually folded and abutted to form a narrow-mouth cylinder, so that the flow in the moving pipe is reduced, the stability and the reliability of purging work are improved, the purity of a sample is ensured, and the purging effect of the sample is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of nitrogen purging devices, specifically a heatable nitrogen purging device. Background Technology

[0002] Nitrogen purging devices are commonly used sample pretreatment equipment in laboratories. They are mainly used to remove solvents from samples by purging, thereby achieving rapid sample concentration. Nitrogen purging devices typically include a nitrogen inlet, a support, a fixture, and a gas needle. The position of the gas needle is controlled by the support, the sample tube is fixed by the fixture, and finally the nitrogen inlet is opened, and the gas needle is used to purge the sample in the sample tube.

[0003] To improve purging efficiency, most nitrogen purging devices are equipped with heating mechanisms. Heating the sample while purging it can effectively increase the evaporation rate of the solvent in the sample. However, in actual operation, when the solvent volume decreases, the operator will adjust the height of the gas needle to keep the flow rate of nitrogen at the top of the solvent constant. When the sample volume decreases to a certain extent, under the action of the heating mechanism, the same flow rate can easily cause boiling on the sample surface, resulting in solute loss and a decrease in sample purity.

[0004] Therefore, a heated nitrogen purging device is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies and solve the problem that when the solvent volume decreases, operators adjust the height of the gas needle to keep the nitrogen flow rate at the top of the solvent constant, but when the sample volume decreases to a certain extent, the same flow rate can easily cause boiling on the sample surface under the action of the heating mechanism, resulting in solute loss and a decrease in sample purity, a heated nitrogen purging device is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a heatable nitrogen purging device according to this utility model, including a purging instrument body;

[0007] A control panel is fixedly installed on one side of the main body of the blower. Air supply pipes are evenly arranged on the top of the main body of the blower. A moving pipe is connected to the bottom of each air supply pipe. A buffer component is provided on the inner wall of each moving pipe. A lifting component is provided on the outer wall of each moving pipe. An air needle is fixedly installed at the bottom of each moving pipe. A water bath mechanism is provided on one side of the main body of the blower.

[0008] The water bath mechanism includes a water bath pot disposed on one side of the main body of the purging device. Clamping blocks are evenly installed on the top of the water bath pot. The clamping blocks are all slidably installed on the bottom of the air needle. Heating tubes are evenly disposed on the bottom of the water bath pot. A drain outlet is fixedly installed on one side of the water bath pot.

[0009] Preferably, the mitigation component includes a rotating shaft disposed on the inner wall of the moving tube, and multiple rotating shafts are evenly arranged. A flow-limiting plate is fixedly installed at the bottom end of each rotating shaft, and a rotating seat is fixedly installed at the bottom end of each flow-limiting plate. A rotating connecting rod is rotatably installed at one end of each rotating seat, and a sliding rod is rotatably installed at the other end of each rotating connecting rod. One end of each sliding rod passes through the moving tube and extends to one side of the moving tube. An abutment block is fixedly installed at the end of each sliding rod extending to one side of the moving tube. An abutment cylinder is abutted on one side of each abutment cylinder, and an adjustment component is provided on one side of each abutment cylinder. A support frame is installed at the bottom end of each abutment cylinder, and the support frame is fixedly installed on one side of the purging instrument body. This allows the flow-limiting plates to close together and abut against each other after the sample liquid level drops to a certain height, forming a narrow-mouthed cylinder, thereby reducing the flow rate inside the moving tube.

[0010] Preferably, the adjustment component includes an adjustment block disposed on one side of the abutment cylinder. The adjustment blocks are all slidably installed on the inner wall of the adjustment housing. The adjustment housing is all fixedly installed on the top of the support frame. Grooves are provided on both sides of the top of the adjustment block. Snap-on grooves are evenly provided on one side of the adjustment block. An inclined housing is fixedly installed on one side of the adjustment housing. Snap-on rods are slidably installed on the inner wall of the inclined housing. Movable disks are fixedly installed at both ends of the snap-on rods. This allows the operator to adjust the timing of the easing component's operation according to the actual situation of the sample, improving the applicability of the device.

[0011] Preferably, the top end of the latching groove is a cylindrical part, and the bottom end of the latching groove is an inclined part; the latching rod can engage with the latching groove to prevent the adjusting block from moving downward, thereby fixing the adjusted position of the abutment cylinder.

[0012] Preferably, the lifting assembly includes a lifting plate disposed on the outer wall of the moving tube, a lead screw is threadedly installed at one end of the lifting plate, a guide rod is slidably installed at the other end of the lifting plate, a motor is disposed at the top of the lead screw, and the motor is connected to an external power source through a wire; this makes the process of the sliding rod driving the current limiting plate to rotate through the rotating connecting rod and the rotating seat smoother, and avoids the problem of the mechanism getting stuck.

[0013] Preferably, the distance between the top and bottom of the abutting cylinder is less than or equal to the maximum distance from the abutting block to the top of the abutting cylinder; this avoids the lifting plate and the top of the abutting cylinder from abutting each other, causing motion interference, and improves the stability and reliability of the device.

[0014] The beneficial effects of this utility model are:

[0015] This invention provides a heatable nitrogen purging device. By incorporating a buffer component, after the sample liquid level drops to a certain height, when the operator adjusts the position of the moving tube, the moving tube drives the sliding rod to move, which in turn drives the abutment block to move, causing the abutment block to abut against the inside of the abutment cylinder. At this time, the abutment cylinder drives the abutment block to move away from the abutment cylinder, causing the abutment block to drive the flow-limiting plate to rotate towards the center of the moving tube via the sliding rod, rotating connecting rod, and rotating seat. This causes the flow-limiting plates to close together and abut against each other, forming a narrow-mouthed cylinder, thereby reducing the flow rate inside the moving tube. This avoids the problem that when the sample volume decreases to a certain extent, the same flow rate under the action of the heating mechanism can easily cause the sample surface to boil, leading to solute loss and a decrease in sample purity. This improves the stability and reliability of the purging operation, thereby ensuring the purity of the sample and improving the purging effect.

[0016] This invention provides a heatable nitrogen purging device. By setting an adjustment component, the operator can adjust the position of the contact cylinder by adjusting the position of the adjustment block, so that the operator can adjust the timing of the operation of the easing component according to the actual situation of the sample, thereby improving the applicability of the device. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a three-dimensional view of the main structure of this utility model;

[0019] Figure 2 This is a three-dimensional cross-sectional view of the mitigation component in this utility model;

[0020] Figure 3 This is a utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a utility model Figure 3 Enlarged view of point B in the middle.

[0022] Legend:

[0023] 1. Main body of the purging device; 2. Control panel; 3. Air supply pipe; 4. Moving pipe; 5. Air needle; 6. Water bath; 7. Clamping block; 8. Drain outlet; 9. Rotating shaft; 10. Flow limiting plate; 11. Rotating seat; 12. Rotating connecting rod; 13. Sliding rod; 14. Abutting block; 15. Abutting cylinder; 16. Support frame; 17. Adjusting block; 18. Adjusting outer shell; 19. Groove; 20. Snap-on groove; 21. Inclined outer shell; 22. Snap-on rod; 23. Moving plate; 24. Lifting plate; 25. Lead screw. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] Please see Figures 1 to 4 This utility model provides a heatable nitrogen purging device, including a purging instrument body 1;

[0027] A control panel 2 is fixedly installed on one side of the main body 1 of the blower. Air pipes 3 are evenly arranged on the top of the main body 1 of the blower. A moving pipe 4 is connected to the bottom of each air pipe 3. A buffer component is provided on the inner wall of each moving pipe 4. A lifting component is provided on the outer wall of each moving pipe 4. An air needle 5 is fixedly installed at the bottom of each moving pipe 4. A water bath mechanism is provided on one side of the main body 1 of the blower.

[0028] The water bath mechanism includes a water bath 6 located on one side of the main body 1 of the purging device. Clamping blocks 7 are evenly installed on the top of the water bath 6. The clamping blocks 7 are all slidably installed on the bottom of the air needle 5. Heating tubes are evenly arranged on the bottom of the water bath 6. A drain outlet 8 is fixedly installed on one side of the water bath 6.

[0029] Furthermore, such as Figures 2 to 4As shown, the buffer assembly includes a rotating shaft 9 disposed on the inner wall of the moving tube 4. Multiple rotating shafts 9 are evenly distributed. A flow-limiting plate 10 is fixedly installed at the bottom end of each rotating shaft 9. A rotating seat 11 is fixedly installed at the bottom end of each flow-limiting plate 10. A rotating connecting rod 12 is rotatably installed at one end of each rotating seat 11. A sliding rod 13 is rotatably installed at the other end of each rotating connecting rod 12. One end of each sliding rod 13 passes through the moving tube 4 and extends to one side of the moving tube 4. An abutment block 14 is fixedly installed at the end of each sliding rod 13 extending to one side of the moving tube 4. An abutment cylinder 15 abuts against one side of each abutment block 14. An adjusting assembly is provided on one side of each abutment cylinder 15. A support frame 16 is installed at the bottom end of each abutment cylinder 15. The support frame 16 is fixedly installed on one side of the purging instrument body 1. By setting up the buffer assembly, after the sample liquid level drops to a certain height, the operator adjusts the moving tube 4. When the moving tube 4 is in position, the moving tube 4 drives the sliding rod 13 to move, and the sliding rod 13 drives the abutment block 14 to move, so that the abutment block 14 moves to abut against the inside of the abutment cylinder 15. At this time, the abutment cylinder 15 drives the abutment block 14 to move away from the abutment cylinder 15, so that the abutment block 14 drives the flow limiting plate 10 to rotate towards the center of the moving tube 4 through the sliding rod 13, the rotating connecting rod 12 and the rotating seat 11, so that the flow limiting plates 10 close together and abut against each other to form a narrow-mouth cylinder, thereby reducing the flow rate inside the moving tube 4. This avoids the problem that when the sample volume is reduced to a certain extent, under the action of the heating mechanism, the same flow rate can easily cause the sample surface to boil, resulting in solute loss and a decrease in sample purity. This improves the stability and reliability of the purging work, thereby ensuring the purity of the sample and improving the purging effect of the sample.

[0030] Furthermore, such as Figure 2 and Figure 3 As shown, the adjustment assembly includes an adjustment block 17 disposed on one side of the abutment cylinder 15. The adjustment blocks 17 are all slidably installed on the inner wall of the adjustment housing 18. The adjustment housing 18 is all fixedly installed on the top of the support frame 16. Grooves 19 are provided on both sides of the top of the adjustment block 17. Snap-on grooves 20 are evenly provided on one side of the adjustment block 17. Inclined housings 21 are fixedly installed on one side of the adjustment housing 18. Snap-on rods 22 are slidably installed on the inner wall of the inclined housings 21. Movable disks 23 are fixedly installed at both ends of the snap-on rods 22. By setting the adjustment assembly, the operator can adjust the position of the abutment cylinder 15 by adjusting the position of the adjustment blocks 17, allowing the operator to adjust the timing of the easing assembly operation according to the actual situation of the sample, thus improving the applicability of the device.

[0031] Furthermore, such as Figure 2 and Figure 3 As shown, the top of the snap-fit ​​groove 20 is a cylindrical part, and the bottom of the snap-fit ​​groove 20 is an inclined part. It can be engaged with the snap-fit ​​groove 20 by the snap-fit ​​rod 22, which prevents the adjusting block 17 from moving downward, thereby fixing the adjusted position of the abutment cylinder 15.

[0032] Furthermore, such as Figure 1 As shown, the lifting assembly includes a lifting plate 24 disposed on the outer wall of the moving tube 4. A lead screw 25 is threadedly installed at one end of the lifting plate 24, and a guide rod is slidably installed at the other end of the lifting plate 24. A motor is disposed at the top of the lead screw 25, and the motor is connected to an external power source through a wire. The motor model is 80A6S-M02430.

[0033] In summary, by combining the lifting assembly and the buffer assembly, the process of the sliding rod 13 driving the flow limiting plate 10 to rotate through the rotating connecting rod 12 and the rotating seat 11 can be made smoother. This avoids the problem that when the sliding rod 13 moves at a high speed, it may easily exceed the bearing capacity of other connecting rods, causing the mechanism to malfunction or even jam. This improves the stability and reliability of the buffer assembly.

[0034] Furthermore, such as Figure 1 As shown, the distance between the top and bottom of the abutment cylinder 15 is less than or equal to the maximum distance between the abutment block 14 and the top of the abutment cylinder 15. This can prevent the lifting plate 24 from contacting the top of the abutment cylinder 15 and causing motion interference, thus improving the stability and reliability of the device.

[0035] Working principle: When nitrogen purging is required for the sample, the reagent tube containing the sample is placed and fixed in the clamping block 7. At this time, the operator can press the groove 19 and pull the adjusting block 17, which causes the adjusting block 17 to move the abutment cylinder 15. The position of the abutment cylinder 15 is adjusted according to the actual situation of the sample. At the same time, the adjusting block 17 moves the locking groove 20, which causes the locking groove 20 to move the locking rod 22 towards the inclined outer shell 21. After the position of the abutment cylinder 15 is adjusted, the locking rod 22 moves along the inclined outer shell 21 into the locking groove 20 under the action of gravity. At this time, the groove 19 is released, and the adjusting block 17 moves downward under the action of gravity. The locking rod 22 abuts and locks with the locking groove 20 and prevents the locking groove 20 from moving, thereby fixing the position of the abutment cylinder 15.

[0036] After adjusting the position of the contact cylinder 15, the operator uses the control panel 2 to start the heating tube inside the water bath 6 and observes the water temperature inside the water bath 6 through the control panel 2. When the water temperature reaches the target temperature, the operator uses the control panel 2 to start the motor, which drives the lead screw 25 to rotate. The lead screw 25 drives the lifting plate 24 to move, the lifting plate 24 drives the moving tube 4 to move, and the moving tube 4 drives the gas needle 5 to move to the appropriate position. At this time, the operator opens the gas supply pipe 3, so that nitrogen gas is purged on the sample through the gas supply pipe 3, the moving tube 4 and the gas needle 5.

[0037] After a certain amount of solute in the sample has evaporated, the operator controls the motor to start via the control panel 2. The motor drives the gas needle 5 to move via the lead screw 25, lifting plate 24, and moving tube 4, keeping the nitrogen flow rate at the top of the sample constant. At the same time, the moving tube 4 drives the abutment block 14 to move. When the abutment block 14 moves to one side of the abutment cylinder 15, the inner side of the abutment cylinder 15 abuts against the abutment block 14, causing the abutment cylinder 15 to drive the abutment block 14 to move away from the abutment cylinder 15. The abutment block 14 drives the sliding rod 13 to move, the sliding rod 13 drives the rotating connecting rod 12 to rotate, the rotating connecting rod 12 drives the rotating seat 11 to rotate, and the rotating seat 11 drives the flow limiting plate 10 to rotate towards the center of the moving tube 4, causing the flow limiting plates 10 to close together and form a narrow-mouthed cylinder, thereby reducing the flow rate inside the moving tube 4 and preventing the solvent in the sample from evaporating too quickly.

[0038] When it is necessary to reset the abutment cylinder 15, the operator can press the movable plate 23, thereby moving the latching rod 22 to the end of the inclined housing 21 away from the adjusting housing 18. At this time, the adjusting block 17 moves downward under the action of gravity, and the adjusting block 17 drives the abutment cylinder 15 to move, thereby completing the reset of the abutment cylinder 15.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A heatable nitrogen purging device, characterized by: Including purging instrument main body (1); One side of the purging instrument main body (1) is fixedly installed with a control panel (2), and the top end of the purging instrument main body (1) is uniformly provided with a gas conveying pipe (3), and the bottom end of the gas conveying pipe (3) is connected with a moving pipe (4), the inner wall of the moving pipe (4) is provided with a buffer assembly, the outer wall of the moving pipe (4) is provided with a lifting assembly, the bottom end of the moving pipe (4) is fixedly installed with a gas needle (5), and one side of the purging instrument main body (1) is provided with a water bath mechanism; The water bath mechanism comprises a water bath kettle (6) arranged on one side of the purging instrument main body (1), and the top end of the water bath kettle (6) is uniformly provided with a clamping block (7), the clamping block (7) is slidably installed on the bottom end of the gas needle (5), and the bottom end of the water bath kettle (6) is uniformly provided with a heating pipe.

2. A heatable nitrogen purging device according to claim 1, wherein: The buffer assembly comprises a rotating shaft (9) arranged on the inner wall of the moving pipe (4), a plurality of rotating shafts (9) are uniformly arranged, the bottom end of the rotating shaft (9) is fixedly installed with a flow limiting plate (10), the bottom end of the flow limiting plate (10) is fixedly installed with a rotating seat (11), one end of the rotating seat (11) is rotatably installed with a rotating connecting rod (12), the other end of the rotating connecting rod (12) is rotatably installed with a sliding rod (13), one end of the sliding rod (13) penetrates through the moving pipe (4) and extends to one side of the moving pipe (4), one end of the sliding rod (13) extending to one side of the moving pipe (4) is fixedly installed with an abutting block (14), one side of the abutting block (14) is abutted with an abutting cylinder (15), one side of the abutting cylinder (15) is provided with an adjusting assembly, the bottom end of the abutting cylinder (15) is installed with a support frame (16), and the support frame (16) is fixedly installed on one side of the purging instrument main body (1).

3. A heatable nitrogen purging device according to claim 2, wherein: The adjusting assembly comprises an adjusting block (17) arranged on one side of the abutting cylinder (15), the adjusting block (17) is slidably installed on the inner wall of the adjusting shell (18), the adjusting shell (18) is fixedly installed on the top end of the support frame (16), recesses (19) are formed on the two sides of the top end of the adjusting block (17), a buckle groove (20) is uniformly formed on one side of the adjusting block (17), one side of the adjusting shell (18) is fixedly installed with an inclined shell (21), the inner wall of the inclined shell (21) is slidably installed with a buckle rod (22), and the two ends of the buckle rod (22) are fixedly installed with a moving disc (23).

4. A heatable nitrogen purging device according to claim 3, wherein: The top end of the buckle groove (20) is provided with a cylindrical portion, and the bottom end of the buckle groove (20) is provided with an inclined portion.

5. A heatable nitrogen purging device as defined in claim 1, wherein: The lifting assembly comprises a lifting plate (24) arranged on the outer wall of the moving pipe (4), one end of the lifting plate (24) is threadedly installed with a lead screw (25), the other end of the lifting plate (24) is slidably installed with a guide rod, and the top end of the lead screw (25) is provided with a motor.

6. A heatable nitrogen purging device according to claim 3, wherein: The distance between the top end and the bottom end of the abutment cylinder (15) is less than or equal to the maximum distance from the abutment block (14) to the top end of the abutment cylinder (15).

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