Full-automatic multi-sample degassing and sampling device

Abstract

The utility model relates to the technical field of oil sample detection equipment, in particular to a full-automatic multi-sample degassing and sampling device which comprises a supporting plate, a sample support and a sampling mechanism are connected to the supporting plate, the sample support comprises a plurality of injector supporting mechanisms arranged side by side, the sampling mechanism comprises a working table, the working table is connected to a displacement driving mechanism, and the displacement driving mechanism is connected to the working table. The displacement driving mechanism can drive the workbench to move to the position corresponding to the injector supporting mechanism, a feeding mechanism is fixedly arranged on the workbench, the feeding mechanism is connected with a sample injection pipe, and the feeding mechanism can drive the sample injection pipe to be close to or away from the injector supporting mechanism. The device can be suitable for various injectors of different models, and the adaptability is high; moreover, the automatic sample injection device can realize automatic sample injection, does not need manual operation, and is relatively high in working efficiency and relatively high in accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of oil sample detection equipment, in particular to a full-automatic multi-sample degassing and sampling device. Background Technique

[0002] At present, the dissolved gases in transformer oil are usually detected by gas chromatography analysis, which can effectively detect most internal faults of transformers. Before detecting the dissolved gases by gas chromatography, the gases in the sample oil need to be removed first, and then chromatographic analysis is carried out on the removed gases. The degassing methods of oil samples usually include vacuum degassing, oscillating degassing, etc. There are many degassing devices in the prior art for degassing treatment of transformer oil samples.

[0003] However, most of the oil samples collected on site are stored in syringes. When carrying out degassing treatment, the oil samples in the syringes need to be introduced into the degassing device. In the prior art, there are two problems in the process of oil sample injection. One is that multiple batches of oil samples need to be stored in multiple syringes. The existing degassing devices usually adopt manual injection. When detecting multiple batches of samples, the staff needs to carry out multiple injection processes, which is cumbersome and prone to confusion. The other is that some degassing devices are provided with an automatic injection mechanism. However, due to the inconsistent models of the syringes used for sampling, the injection mechanism of the existing degassing device can only be aimed at syringes of a certain capacity model, and the applicable range is too small. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a full-automatic multi-sample degassing and sampling device.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A full-automatic multi-sample degassing and sampling device includes a support plate, a sample bracket and an injection mechanism are connected to the support plate. The sample bracket includes a plurality of syringe support mechanisms arranged side by side. The injection mechanism includes a workbench, the workbench is connected to a displacement driving mechanism, and the displacement driving mechanism can drive the workbench to move to a position corresponding to the syringe support mechanism. A feeding mechanism is fixedly arranged on the workbench, the feeding mechanism is connected to a sampling tube, and the feeding mechanism can drive the sampling tube to approach or move away from the syringe support mechanism.

[0007] In the above structure, multiple syringe support mechanisms arranged side by side are respectively used to support syringes containing oil samples. The displacement driving mechanism can drive the workbench to move to a specified syringe support mechanism. Then, the feeding mechanism operates to drive the sampling tube close to the syringe support mechanism, so that the sampling tube is docked with the syringe output end on the syringe support mechanism, and the other end of the sampling tube is connected to the sampling power of the degassing device (such as a sampling suction pump), thereby realizing automatic sampling of the degassing device.

[0008] The displacement driving mechanism includes a first rotational power, which is connected to a first rotating shaft and can drive the first rotating shaft to rotate. The first rotating shaft is connected to a synchronous belt. A second rotating shaft is rotatably connected to the support plate, and both ends of the synchronous belt are respectively sleeved on the first rotating shaft and the second rotating shaft. The workbench is fixedly connected to the synchronous belt.

[0009] A first slide rail is provided on the support plate, and the bottom of the workbench can slide along the first slide rail.

[0010] In the above structure, the first rotational power can drive the first rotating shaft to rotate, and the first rotating shaft drives the synchronous belt to rotate, thereby driving the workbench to move.

[0011] The feeding mechanism includes a slide table, which can slide relative to the workbench. A second rotational power is fixedly installed on the slide table, and the second rotational power is connected to a driving gear and can drive the driving gear to rotate. A fixed rack is fixedly provided on the workbench, and the driving gear meshes with the fixed rack.

[0012] A second slide rail is fixedly provided on the workbench, and the slide table can slide along the second slide rail.

[0013] In the above structure, the second rotational power drives the driving gear to rotate, and the driving gear meshes with the fixed rack, thereby driving the slide table to slide on the workbench.

[0014] The syringe support mechanism includes a needle seat support plate and a syringe barrel support plate. Both the needle seat support plate and the syringe barrel support plate are fixedly arranged relative to the support plate. A positioning groove is formed on the needle seat support plate, and the upper part of the positioning groove is open.

[0015] Specifically, the specifications of syringes refer to different capacities, while the specifications of the needles refer to the length and diameter of the needles. However, regardless of the size of the syringe, the needle seat (the small protruding tube at the front end of the syringe) used to connect with the needle is the same size, and the size and length of the needle seat are unified. Therefore, for syringes of different models, the positioning grooves on the needle seat support plate can provide precise positioning for them. When placing the syringe, just place the needle seat of the syringe in the positioning groove and press the front end face of the syringe against the side of the needle seat support plate, then precise positioning for the syringe can be provided, and the syringe barrel support plate provides support for the syringe barrel.

[0016] A cap-removing mechanism is arranged near the needle seat support plate, and the cap-removing mechanism includes a cap-removing action plate, and a cap-removing groove identical to the positioning groove is opened on the cap-removing action plate. The cap-removing action plate is arranged parallel to the needle seat support plate, and the cap-removing action plate is connected to the cap-removing power mechanism, and the cap-removing power mechanism can drive the cap-removing action plate to approach or move away from the needle seat support plate.

[0017] Usually, a rubber cap is installed on the needle seat at the front end of the syringe to prevent the oil sample from leaking. Therefore, before the injection tube is docked with the needle seat of the syringe, the rubber cap needs to be removed first. The uncapping mechanism can realize the automatic removal of the rubber cap. Specifically, when the syringe is placed, the needle seat of the syringe is stuck in the positioning groove and also stuck in the uncapping groove. The uncapping action plate is located between the rubber cap and the front end surface of the syringe. After that, the uncapping power mechanism drives the uncapping action plate to move away from the needle seat support plate. The uncapping action plate will be pressed against the rubber cap and gradually drive the rubber cap away from the needle seat of the syringe, thereby realizing the uncapping action.

[0018] Specifically, the lower part of the cap-removing action plate is connected with an extension plate, and the cap-removing power mechanism includes a linear power mechanism and a return spring. The output rod of the linear power mechanism can push the extension plate to move, thereby driving the cap-removing action plate to move in the direction away from the needle seat support plate to realize the cap-removing action. A return spring is provided in conjunction with the cap-removing action plate. The return spring can drive the cap-removing action plate to move in the direction close to the needle seat support plate to realize the return of the cap-removing action plate.

[0019] The linear power mechanism is fixedly connected to the workbench through a mounting plate so as to remove the cap of the syringe that needs to be injected. To facilitate installation and arrangement, a hole is opened on the support plate to allow the extension plate to slide through the lower part of the support plate, and the linear power mechanism is also arranged at the lower part of the support plate.

[0020] The needle seat support plate and the syringe support plate are fixedly mounted on the upper part of the shell, the shell is fixedly mounted on the support plate, the lower part of the shell is fixedly connected with a third slide rail, the third slide rail is arranged in the space between the shell and the support plate, the cap removal action plate is connected with a slider, the slider is slidably connected with the third slide rail, so as to ensure the stable movement of the cap removal action plate.

[0021] The beneficial effects achieved by the utility model are:

[0022] The utility model can be applied to various syringes of different models and has strong adaptability;

[0023] Furthermore, the utility model can realize automatic sample injection without manual operation, has high working efficiency and high precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present utility model and form a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the accompanying drawings:

[0025] Figure 1 is a schematic structural view of the present utility model;

[0026] Figure 2 is a schematic view of a partial structure of the present utility model;

[0027] Figure 3 is a schematic view of a partial structure of the present utility model (with the housing and part of the support plate removed);

[0028] Figure 4 is a schematic structural view of the present utility model (with part of the housing and part of the support plate removed);

[0029] Figure 5 is Figure 4 an enlarged view of the structure at position A in

[0030] Figure 6 is a schematic view of a partial structure of the present utility model (with the housing removed);

[0031] Figure 7 is a schematic structural view of the present utility model applied to a degassing device.

[0032] In the figure: 1, support plate; 2, housing; 3, syringe; 4, syringe barrel support plate; 5, needle seat support plate; 6, first rotational power; 7, first rotating shaft; 8, synchronous belt; 9, first slide rail; 10, second rotating shaft; 11, cap removal action plate; 12, rubber cap; 13, second rotational power; 14, driving gear; 15, fixed rack; 16, second slide rail; 17, sampling tube; 18, extension plate; 19, third slide rail; 20, slider; 21, linear power mechanism; 22, mounting plate; 23, degassing device; 24, workbench; 25, positioning groove. Detailed implementation manners

[0033] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model and are not used to limit the present utility model.

[0034] Embodiment:

[0035] As Figures 1-7As shown in the figure, a fully automatic multi-sample degassing injection device includes a support plate 1, which is installed on a degassing device 23 through the support plate 1. A sample support and an injection mechanism are connected to the support plate 1. The sample support includes a plurality of syringe support mechanisms arranged side by side in an orderly manner. The injection mechanism includes a workbench 24, and the workbench 24 is connected to a displacement drive mechanism. The displacement drive mechanism can drive the workbench 24 to move to a position corresponding to the syringe support mechanism. A feeding mechanism is fixedly arranged on the workbench 24, and the feeding mechanism is connected to an injection tube 17. The feeding mechanism can drive the injection tube 17 to approach or move away from the syringe support mechanism. Syringe support mechanisms can be arranged on both sides of the injection mechanism. The feeding mechanism can be connected to two injection tubes 17, and the two injection tubes 17 are respectively used to be butted and communicated with syringes 3 on the syringe support mechanisms on both sides.

[0036] In the above structure, a plurality of syringe support mechanisms arranged side by side are respectively used to support the syringes 3 containing oil samples. The displacement drive mechanism can drive the workbench 24 to move to a designated syringe support mechanism. Then the feeding mechanism operates to drive the injection tube 17 to approach the syringe support mechanism, so that the injection tube 17 is butted with the output end of the syringe 3 on the syringe support mechanism. The other end of the injection tube 17 is connected to the injection power (such as an injection suction pump) of the degassing device 23, so as to realize the automatic injection of the degassing device 23.

[0037] The syringe support mechanism includes a needle seat support plate 5 and a syringe barrel support plate 4. The needle seat support plate 5 and the syringe barrel support plate 4 are both fixedly arranged relative to the support plate 1. The needle seat support plate 5 is arranged close to the injection mechanism. A positioning groove 25 (refer to Figure 6 ) is provided on the needle seat support plate 5, and the upper part of the positioning groove 25 is open. An arc-shaped recess is provided in the upper part of the syringe barrel support plate 4 to support the syringe barrel.

[0038] Specifically, the specification of the syringe 3 refers to the difference in capacity, and the specification of the needle refers to the length and diameter of the needle. However, no matter how large the syringe 3 is, the needle seat (the small tube protruding from the front end of the syringe 3) used to connect with the needle at its front end is the same size, and the size and length of the needle seat are unified. Therefore, for different models of syringes 3, the positioning groove 25 of the needle seat support plate 5 can provide precise positioning for it. When placing the syringe 3, just place the needle seat of the syringe 3 in the positioning groove 25 and press the front end face of the syringe 3 against the side face of the needle seat support plate 5, then precise positioning can be provided for the syringe 3, and the syringe barrel support plate 4 provides support for the syringe barrel of the syringe 3.

[0039] A cap-removing mechanism is provided near the needle seat support plate 5. The cap-removing mechanism includes a cap-removing action plate 11. A cap-removing groove identical to the positioning groove 25 is formed on the cap-removing action plate 11. The cap-removing action plate 11 is arranged parallel to the needle seat support plate 5. The cap-removing action plate 11 is connected to a cap-removing power mechanism, and the cap-removing power mechanism can drive the cap-removing action plate 11 to approach or move away from the needle seat support plate 5.

[0040] Generally, a rubber cap 12 is installed on the needle seat at the front end of the syringe 3 to prevent oil samples from leaking. Therefore, before the sampling tube 17 is docked with the needle seat of the syringe 3, the rubber cap 12 needs to be removed first. The cap-removing mechanism can realize the automatic removal of the rubber cap 12. Specifically, when the syringe 3 is placed, the needle seat of the syringe 3 is clamped in the positioning groove 25 and also in the cap-removing groove. The cap-removing action plate 11 is located between the rubber cap 12 and the front end face of the syringe barrel. Then, the cap-removing power mechanism drives the cap-removing action plate 11 to move away from the needle seat support plate 5. The cap-removing action plate 11 will press tightly on the rubber cap 12 and gradually drive the rubber cap 12 to disengage from the needle seat of the syringe 3, thereby realizing the cap-removing action.

[0041] Specifically, an extension plate 18 is connected to the lower part of the cap-removing action plate 11. The cap-removing power mechanism includes a linear power mechanism 21 and a return spring (not marked in the drawing). The output rod of the linear power mechanism 21 can push the extension plate 18 to move, thereby driving the cap-removing action plate 11 to move away from the needle seat support plate 5 to realize the cap-removing action. A return spring is arranged in cooperation with the cap-removing action plate 11, and the return spring can drive the cap-removing action plate 11 to move towards the needle seat support plate 5 to realize the return of the cap-removing action plate 11. For the convenience of installation and arrangement, a hole is formed on the support plate 1 to allow the extension plate 18 to slide through to the lower part of the support plate 1, and the linear power mechanism 21 is also arranged at the lower part of the support plate 1. The return spring can be arranged between the extension plate 18 and the support plate 1. When the output rod of the linear power mechanism 21 pushes the extension plate 18 to drive the cap-removing action plate 11 to move away from the needle seat support plate 5, the extension plate 18 compresses the return spring to store energy. After the cap-removing is completed, the output rod of the linear power mechanism 21 contracts, and the extension plate 18 returns to its original position under the action of the rebound force of the return spring.

[0042] The linear power mechanism 21 can be selected as a cylinder, and the output rod of the linear power mechanism 21 is not connected to the extension plate 18. In addition, the linear power mechanism 21 and the workbench 24 are fixedly connected through a mounting plate 22, so that the linear power mechanism 21 can follow the workbench 24 to switch work positions and perform cap-removing treatment on the syringe 3 at the specified position.

[0043] The needle seat support plate 5 and the syringe barrel support plate 4 are fixedly installed on the upper part of the housing 2, the housing 2 is fixedly installed on the support plate 1, a third slide rail 19 is fixedly connected to the lower part of the housing 2, the third slide rail 19 is arranged in the space between the housing 2 and the support plate 1, the cap-removing action plate 11 is connected with a slider 20, and the slider 20 is slidably connected with the third slide rail 19 to ensure the stable movement of the cap-removing action plate 11.

[0044] As Figure 1 , Figure 2 , Figure 6 shown, the displacement driving mechanism includes a first rotary power source 6, the first rotary power source 6 is connected with a first rotary shaft 7 and can drive the first rotary shaft 7 to rotate, the first rotary shaft 7 is connected with a synchronous belt 8, a second rotary shaft 10 is rotatably connected to the support plate 1, and both ends of the synchronous belt 8 are respectively sleeved on the first rotary shaft 7 and the second rotary shaft 10, and the workbench 24 is fixedly connected to the synchronous belt 8. A first slide rail 9 is arranged on the support plate 1, and the bottom of the workbench 24 can slide along the first slide rail 9.

[0045] In the above structure, the first rotary power source 6 can drive the first rotary shaft 7 to rotate, the first rotary shaft 7 drives the synchronous belt 8 to rotate, so as to drive the workbench 24 to move. The first rotary power source 6 is selected as a motor, and the first rotary shaft 7 and the second rotary shaft 10 are selected as rotary shafts that can cooperate with the synchronous belt 8.

[0046] The feeding mechanism includes a slide table, the slide table can slide relative to the workbench 24, a second rotary power source 13 is fixedly installed on the slide table, the second rotary power source 13 is connected with a driving gear 14 and can drive the driving gear 14 to rotate, a fixed rack 15 is fixedly arranged on the workbench 24, and the driving gear 14 meshes with the fixed rack 15. A second slide rail 16 is fixedly arranged on the workbench 24, and the slide table can slide along the second slide rail 16.

[0047] In the above structure, the second rotary power source 13 drives the driving gear 14 to rotate, the driving gear 14 meshes with the fixed rack 15, so as to drive the slide table to slide on the workbench 24. The second rotary power source 13 is selected as a motor.

[0048] The specific working process of the present utility model is as follows:

[0049] First of all, the staff sequentially place the syringes 3, and one syringe 3 is placed on each syringe support mechanism. When placing, the needle seat of the syringe 3 is clamped in the positioning groove 25 and also clamped in the cap-removing groove, the front end face of the syringe 3 is abutted against the side face of the needle seat support plate 5, and the syringe barrel is supported by the syringe barrel support plate 4;

[0050] During sample injection, the first rotational power 6 can drive the first rotating shaft 7 to rotate. The first rotating shaft 7 drives the synchronous belt 8 to rotate, thereby driving the workbench 24 to move, causing the workbench 24 to drive the feeding mechanism to move to the corresponding position of the designated syringe 3. Then, the output rod of the linear power mechanism 21 extends outwards, pushing the extension plate 18 to move, thereby driving the cap-removing action plate 11 to move away from the needle seat support plate 5. The cap-removing action plate 11 presses on the rubber cap 12 and pushes the rubber cap 12 to disengage from the needle seat of the syringe 3. Then, the output rod of the linear power mechanism 21 contracts, and the extension plate 18 returns to its original position under the rebounding force of the return spring, and the cap-removing action plate 11 also follows and returns to its original position;

[0051] After that, the second rotational power 13 drives the drive gear 14 to rotate. The drive gear 14 meshes with the fixed rack 15, thereby driving the slide to slide on the workbench 24. The sampling tube 17 is connected to the slide, so that the sampling tube 17 is docked and communicated with the needle seat of the syringe 3. The sampling tube 17 sucks the oil sample into the internal part of the degassing device 23 through the suction power of the degassing device 23 for degassing treatment.

Claims

1. An automatic multi-sample degassing injection device, characterized in that, It includes a support plate (1), on which a sample holder and a sample injection mechanism are connected. The sample holder includes a plurality of syringe support mechanisms arranged side by side. The sample injection mechanism includes a workbench (24), which is connected to a displacement drive mechanism. The displacement drive mechanism can drive the workbench (24) to move to a position corresponding to the syringe support mechanism. A feeding mechanism is fixedly arranged on the workbench (24), and the feeding mechanism is connected to a sample injection tube (17). The feeding mechanism can drive the sample injection tube (17) to approach or move away from the syringe support mechanism.

2. The fully automatic multi-sample degassing injection device according to claim 1, wherein The displacement drive mechanism includes a first rotational power source (6), which is connected to a first rotating shaft (7) and can drive the first rotating shaft (7) to rotate. The first rotating shaft (7) is connected to a synchronous belt (8). A second rotating shaft (10) is rotatably connected to the support plate (1). The two ends of the synchronous belt (8) are respectively sleeved on the first rotating shaft (7) and the second rotating shaft (10). The workbench (24) is fixedly connected to the synchronous belt (8).

3. The fully automatic multi-sample degassing injection device according to claim 2, characterized in that, A first slide rail (9) is arranged on the support plate (1), and the bottom of the workbench (24) can slide along the first slide rail (9).

4. The fully automatic multi-sample degassing injection device according to claim 1, characterized in that, The feeding mechanism includes a slide table, which can slide relative to the workbench (24). A second rotational power source (13) is fixedly installed on the slide table. The second rotational power source (13) is connected to a driving gear (14) and can drive the driving gear (14) to rotate. A fixed rack (15) is fixedly arranged on the workbench (24), and the driving gear (14) meshes with the fixed rack (15).

5. The fully automatic multi-sample degassing injection device according to claim 4, characterized in that, A second slide rail (16) is fixedly arranged on the workbench (24), and the slide table can slide along the second slide rail (16).

6. The fully automatic multi-sample degassing injection device according to claim 1, characterized in that, The syringe support mechanism includes a needle seat support plate (5) and a syringe barrel support plate (4). Both the needle seat support plate (5) and the syringe barrel support plate (4) are fixedly arranged relative to the support plate (1). A positioning groove (25) is formed on the needle seat support plate (5), and the upper part of the positioning groove (25) is open.

7. The fully automatic multi-sample degassing injection device according to claim 6, characterized in that, A cap removal mechanism is arranged near the needle seat support plate (5). The cap removal mechanism includes a cap removal action plate (11). A cap removal groove identical to the positioning groove (25) is formed on the cap removal action plate (11). The cap removal action plate (11) is arranged parallel to the needle seat support plate (5). The cap removal action plate (11) is connected to a cap removal power mechanism, and the cap removal power mechanism can drive the cap removal action plate (11) to approach or move away from the needle seat support plate (5).

8. The fully automatic multi-sample degassing injection device according to claim 7, wherein An extension plate (18) is connected to the lower part of the cap removal action plate (11). The cap removal power mechanism includes a linear power mechanism (21) and a return spring. The output rod of the linear power mechanism (21) can push the extension plate (18) to move, thereby driving the cap removal action plate (11) to move away from the needle seat support plate (5). A return spring is arranged in cooperation with the cap removal action plate (11), and the return spring can drive the cap removal action plate (11) to move towards the needle seat support plate (5).

9. The fully automatic multi-sample degassing injection device according to claim 8, wherein, The linear power mechanism (21) is fixedly connected to the workbench (24) through a mounting plate (22). The support plate (1) is provided with an opening to allow the extension plate (18) to slide through to the lower part of the support plate (1).

10. The fully automatic multi-sample degassing injection device according to claim 7 or 8, characterized in that, The needle seat support plate (5) and the syringe barrel support plate (4) are fixedly installed on the upper part of the housing (2). The housing (2) is fixedly installed on the support plate (1). A third slide rail (19) is fixedly connected to the lower part of the housing (2). The cap removal action plate (11) is connected with a slider (20), and the slider (20) is slidably connected to the third slide rail (19).

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