Automatic chlorosilane liquid sampling device

Abstract

The utility model discloses an automatic chlorosilane liquid sampling device, which relates to the technical field of liquid sampling and comprises an outer shell, a sampling component is arranged at the top of the outer shell, a turntable is rotatably arranged at the top of the outer shell, and the turntable is driven by a first motor mounted in the outer shell to rotate. A positioning assembly is arranged at the top of the turntable, and a plurality of sampling bottles are annularly positioned and placed on the positioning assembly at equal angles. When the sampling bottle is used, through the arranged injection needle and the first rubber layer on the bottle cap of the sampling bottle, after the injection needle penetrates through the first rubber layer to inject sample liquid into the sampling bottle and the injection needle is pulled out of the first rubber layer, the needle hole can be automatically clamped and closed under the elastic action of the rubber material; therefore, the sample liquid in the sampling bottle can be prevented from being in contact with external air, the sample liquid is prevented from being denatured, the accuracy of a subsequent detection result is further ensured, and the reliability of the sampling device is improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid sampling technology, and in particular to an automatic sampling device for chlorosilane liquids. Background Technology

[0002] Chlorosilane liquids are a class of organosilicon compounds composed of chlorine and silicon, mainly including tetrachlorosilane, trichlorosilane, etc. They are usually colorless or pale yellow transparent liquids with an irritating odor, are flammable and explosive, and are toxic.

[0003] When producing chlorosilane liquids, it is necessary to sample and test the chlorosilane liquids in order to promptly check the quality of the produced chlorosilane liquids and ensure that the quality of the chlorosilane liquids meets the relevant standards and requirements. However, since chlorosilane liquids are highly reactive liquids, they require special attention during the production process.

[0004] Existing sampling equipment extracts a portion of the chlorosilane liquid from the pipeline as a sample and sends it into a sampling bottle when sampling chlorosilanes are sampled. However, since the sampling bottle needs to be separated from the pipeline after the sample is injected, the chlorosilane liquid is prone to contact with air and react during the separation process, which may cause danger and change the properties of the chlorosilane liquid, reducing the accuracy of subsequent detection of chlorosilane liquid. Utility Model Content

[0005] The purpose of this invention is to provide an automatic sampling device for chlorosilane liquids, in order to solve the problem mentioned in the background art that when existing chlorosilane liquid sampling devices are used, the chlorosilane liquid is prone to contact with external air and react during sampling, which changes the properties of the chlorosilane liquid and affects the accuracy of subsequent detection.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic sampling device for chlorosilane liquids, comprising an outer shell, a sampling component on the top of the outer shell, a turntable rotatably mounted on the top of the outer shell, the turntable being driven to rotate by a first motor installed inside the outer shell, a positioning component on the top of the turntable, a plurality of sampling bottles being positioned at equal angles in a ring on the positioning component, and a first rubber layer being fixedly connected to the center position of the top of the sampling bottle cap;

[0007] The sampling assembly includes an injection needle and a first electric telescopic rod fixedly inserted into the top of the outer casing. The injection needle is connected to the output end of the first electric telescopic rod, and the bottom end of the injection needle can pierce the first rubber layer and extend into the interior of the sampling bottle.

[0008] Preferably, it also includes a sealing component for forming a sealing space between the top surface of the sample vial cap and the bottom of the injection needle.

[0009] Preferably, the sealing assembly includes a second electric telescopic rod fixedly inserted into the top of the outer casing. The output end of the second electric telescopic rod is fixedly connected to a second connecting arm. The end of the second connecting arm is detachably connected to a sealing member. The sealing member includes a sealing box. The top of the sealing box has an insertion hole, and a first rubber ring is fixedly sleeved on the inner sidewall of the insertion hole. The inner diameter of the first rubber ring and the outer diameter of the injection needle are interference-fitted. The bottom of the sealing box has a through hole.

[0010] Preferably, the sealing assembly further includes a second rubber layer fixedly sleeved on the inner wall of the through hole. The advantage of this arrangement is that it can further improve the isolation effect between the bottom of the injection needle and the outside air, and prevent the residual chlorosilane liquid inside the injection needle from reacting with the outside air.

[0011] Preferably, the sampling assembly further includes a first connecting arm detachably connected to the output end of the first electric telescopic rod. A circular plate is fixedly connected to the end of the first connecting arm, and a fixing tube is fixedly inserted into the bottom of the circular plate. The top end of the injection needle is connected to the bottom end of the fixing tube. The sampling assembly further includes a first liquid pump fixedly installed on the top of the outer casing. The outlet end of the first liquid pump is connected to a sample delivery tube. The outlet end of the sample delivery tube passes through the top of the circular plate and is connected to the top end of the fixing tube. The sampling assembly further includes an inlet tube. The inlet end of the inlet tube is connected to a pipe through which chlorosilane liquid flows or a tank storing chlorosilane liquid. The outlet end of the inlet tube passes through the side wall of the outer casing and is connected to the inlet end of the first liquid pump.

[0012] Preferably, the sealing assembly further includes a circular hole on the side of the sealing box, the second rubber layer is frustoconical, and a second liquid pump fixedly installed on the top of the outer shell. The inlet end of the second liquid pump is connected to an inlet pipe, the inlet end of the inlet pipe is connected to an external cleaning solution container, the outlet end of the second liquid pump is connected to a cleaning pipe, the outlet end of the cleaning pipe is connected to a sample delivery tube, and a third liquid pump is fixedly installed on the top of the outer shell. The inlet end of the third liquid pump is connected to a drain pipe, the inlet end of the drain pipe is connected to the circular hole, and the outlet end of the third liquid pump is connected to a collection pipe, which is connected to a collection tank. The advantage of this arrangement is that the cleaning solution can be introduced into the sample delivery tube and the injection needle through the second liquid pump, thereby rinsing the residual chlorosilane liquid in the sample delivery tube and the injection needle. This can prevent the residual chlorosilane liquid from mixing with the next chlorosilane sample solution and affecting the accuracy of the test results, further improving the reliability of the sampling device.

[0013] In summary, the technical effects and advantages of this utility model are as follows:

[0014] 1. In this utility model, by setting the injection needle and the first rubber layer on the sample bottle cap, after the injection needle penetrates the first rubber layer to inject the sample liquid into the sample bottle and is pulled out from the first rubber layer, the needle hole will be automatically clamped and closed by the elasticity of the rubber material. This can prevent the sample liquid in the sample bottle from coming into contact with the outside air, ensure that the sample liquid will not denature, and thus ensure the accuracy of subsequent test results, thereby improving the reliability of the sampling device.

[0015] 2. In this utility model, the sealing component can be used to form a sealing space between the top surface of the sample bottle cap (5) and the bottom end of the injection needle (21). This allows the injection needle to avoid contact with the outside air when the sample liquid is injected into the sample bottle and the injection needle is pulled out. This prevents the residual chlorosilane liquid in the refraction needle from reacting with the outside air and causing corrosion damage to the injection needle, thus ensuring the safety of the injection needle. At the same time, it can also prevent the chlorosilane liquid from reacting and causing impact and harm to the surrounding personnel, effectively improving the reliability and safety of the sampling device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first structural schematic diagram of an automatic sampling device for chlorosilane-based liquids according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the second structure of an automatic sampling device for chlorosilane liquids according to an embodiment of the present invention;

[0019] Figure 3 This is a first partial structural schematic diagram of an automatic sampling device for chlorosilane-based liquids in an embodiment of this utility model;

[0020] Figure 4 This is an exploded structural diagram of the packer in an embodiment of this utility model.

[0021] In the diagram: 1. Outer shell; 2. Sampling assembly; 21. Injection needle; 22. First electric telescopic rod; 23. Circular plate; 24. Fixing tube; 25. First liquid pump; 26. Sample delivery tube; 27. Sample inlet tube; 3. Turntable; 4. Positioning assembly; 41. Insert tube; 42. Fixing ring; 43. Limiting ring; 5. Sampling bottle; 51. First rubber layer; 6. Sealing assembly; 61. Second electric telescopic rod; 62. Second connecting arm; 63. Sealing component; 631. Sealing box; 632. First rubber ring; 633. Second rubber layer; 634. Circular hole; 7. Second liquid pump; 8. Cleaning tube; 9. Third liquid pump; 10. Drain tube. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 An automatic sampling device for chlorosilane liquids is shown, including an outer shell 1, a sampling component 2 on the top of the outer shell 1, a turntable 3 rotatably mounted on the top of the outer shell 1, the turntable 3 being driven to rotate by a first motor installed inside the outer shell 1, a positioning component 4 on the top of the turntable 3, a plurality of sampling bottles 5 being positioned at equal angles in a ring on the positioning component 4, and a first rubber layer 51 being fixedly connected to the center of the top of the cap of the sampling bottle 5.

[0024] The sampling assembly 2 includes an injection needle 21 and a first electric telescopic rod 22 fixedly inserted into the top of the outer shell 1. The injection needle 21 is connected to the output end of the first electric telescopic rod 22, and the bottom end of the injection needle 21 can pierce the first rubber layer 51 and extend into the inside of the sampling bottle 5.

[0025] The positioning component 4 includes multiple inserts 41 that are fixedly connected to the top of the turntable 3 in a ring at equal angles. The positioning component 4 also includes a fixing ring 42 that is fixedly connected to the top of the turntable 3 by a connecting rod. Multiple limiting rings 43 are fixedly connected to the inner wall of the fixing ring 42 in a ring at equal angles. The multiple limiting rings 43 are located directly above the multiple inserts 41. Multiple sampling bottles 5 are inserted into the multiple inserts 41 and inserted into the multiple limiting rings 43.

[0026] refer to Figures 1-4 It also includes a sealing component 6, which is used to form a sealing space between the top surface of the cap of the sampling bottle 5 and the bottom end of the injection needle 21.

[0027] refer to Figure 3 and Figure 4 The sealing assembly 6 includes a second electric telescopic rod 61 fixedly inserted into the top of the outer shell 1. The output end of the second electric telescopic rod 61 is fixedly connected to a second connecting arm 62. The end of the second connecting arm 62 is detachably connected to a sealing member 63. The sealing member 63 includes a sealing box 631. The top of the sealing box 631 has an insertion hole, and a first rubber ring 632 is fixedly sleeved on the inner side wall of the insertion hole. The inner diameter of the first rubber ring 632 and the outer diameter of the injection needle 21 are interference fit. The bottom of the sealing box 631 has a through hole.

[0028] refer to Figure 4 The sealing assembly 6 also includes a second rubber layer 633 that is fixedly sleeved on the inner wall of the through hole.

[0029] Specifically, it can further improve the isolation effect between the bottom of the injection needle 21 and the outside air, and prevent the residual chlorosilane liquid inside the injection needle 21 from coming into contact with the outside air and reacting.

[0030] refer to Figures 1-3 The sampling assembly 2 also includes a first connecting arm detachably connected to the output end of the first electric telescopic rod 22. A circular plate 23 is fixedly connected to the end of the first connecting arm. A fixed tube 24 is fixedly inserted into the bottom of the circular plate 23. The top end of the injection needle 21 is connected to the bottom end of the fixed tube 24. The sampling assembly 2 also includes a first liquid pump 25 fixedly installed on the top of the outer shell 1. The outlet end of the first liquid pump 25 is connected to a sample delivery tube 26. The outlet end of the sample delivery tube 26 passes through the top of the circular plate 23 and is connected to the top end of the fixed tube 24. The sampling assembly 2 also includes an inlet tube 27. The inlet end of the inlet tube 27 is connected to a pipe through which chlorosilane liquid flows or a tank storing chlorosilane liquid. The outlet end of the inlet tube 27 passes through the side wall of the outer shell 1 and is connected to the inlet end of the first liquid pump 25.

[0031] refer to Figure 1 and Figure 2 The sealing assembly 6 also includes a circular hole 634 on the side of the sealing box 631, the second rubber layer 633 is frustoconical, and a second liquid pump 7 fixedly installed on the top of the outer shell 1. The inlet end of the second liquid pump 7 is connected to an inlet pipe, and the inlet end of the inlet pipe is connected to an external cleaning liquid container. The outlet end of the second liquid pump 7 is connected to a cleaning pipe 8, and the outlet end of the cleaning pipe 8 is connected to a sample delivery pipe 26. A third liquid pump 9 is fixedly installed on the top of the outer shell 1. The inlet end of the third liquid pump 9 is connected to a drain pipe 10, and the inlet end of the drain pipe 10 is connected to the circular hole 634. The outlet end of the third liquid pump 9 is connected to a collection pipe, and the collection pipe is connected to a collection tank.

[0032] Specifically, the second liquid pump 7 can introduce cleaning fluid into the sample delivery tube 26 and the injection needle 21 to rinse the residual chlorosilane liquid in the sample delivery tube 26 and the injection needle 21. This can prevent the residual chlorosilane liquid from mixing with the next chlorosilane sample and affecting the accuracy of the test results, thus further improving the reliability of the sampling device.

[0033] Working principle: The first liquid pump 25 extracts the chlorosilane liquid from the pipe through which the chlorosilane liquid flows or from the tank containing the chlorosilane liquid through the sample inlet tube 27, and then sends it into the injection needle 21 through the sample delivery tube 26 and the fixing tube 24.

[0034] At the same time, the second electric telescopic rod 61 drives the sealing box 631 to move downward until the bottom surface of the second rubber layer 633 is pressed tightly against the top surface of the first rubber layer 51 at the top of the bottle cap of the sampling bottle 5.

[0035] Then, the first electric telescopic rod 22 drives the injection needle 21 to move downwards, passing through the insertion hole at the top of the packer box 631, the second rubber layer 633 and the first rubber layer 51 in sequence, and inserting it into the sampling bottle 5. Then, the chlorosilane liquid sample is injected into the sampling bottle 5. Next, the first electric telescopic rod 22 drives the injection needle 21 to move upwards until the injection needle 21 moves into the packer box 631.

[0036] Next, the second liquid pump 7 is started to introduce the cleaning solution into the sample delivery tube 26 through the cleaning tube 8. Then the cleaning solution flows through the sample delivery tube 26 and the injection needle 21 and enters the septum 631 to complete the rinsing of the sample delivery tube 26 and the injection needle 21. Then the third liquid pump 9 is started to discharge the cleaning solution in the septum 631 through the drain tube 10.

[0037] Then the first motor drives the turntable 3 to rotate so that the next sampling bottle 5 enters the sampling position, and the above steps are repeated to complete the sampling operation.

[0038] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid automatic sampling device for chlorosilanes, comprising an outer casing (1), characterized in that: The top of the outer shell (1) is provided with a sampling assembly (2), the top of the outer shell (1) is rotatably provided with a rotating disc (3), the rotating disc (3) is rotatable by a first motor installed in the outer shell (1), the top of the rotating disc (3) is provided with a positioning assembly (4), a plurality of sampling bottles (5) are positioned on the positioning assembly (4) in an annular equiangular manner, and the top of the bottle cap of each sampling bottle (5) is fixedly connected with a first rubber layer (51). The sampling assembly (2) comprises an injection needle (21), the sampling assembly (2) further comprises a first electric telescopic rod (22) fixedly inserted into the top of the outer shell (1), the injection needle (21) is connected to the output end of the first electric telescopic rod (22), and the bottom end of the injection needle (21) can penetrate through the first rubber layer (51) and extend into the sampling bottle (5).

2. A liquid automatic sampling device for chlorosilanes according to claim 1, characterized in that: Further comprising a sealing assembly (6) for forming a sealed space between the top surface of the bottle cap of the sampling bottle (5) and the bottom end of the injection needle (21).

3. A liquid automatic sampling device for chlorosilanes according to claim 2, characterized in that: The sealing assembly (6) comprises a second electric telescopic rod (61) fixedly inserted into the top of the outer shell (1), the output end of the second electric telescopic rod (61) is fixedly connected with a second connecting arm (62), the end of the second connecting arm (62) is detachably connected with a sealing piece (63), the sealing piece (63) comprises a sealing box (631), the top of the sealing box (631) is provided with a insertion hole, a first rubber ring (632) is fixedly sleeved on the inner side wall of the insertion hole, the inner ring diameter of the first rubber ring (632) is in interference fit with the outer diameter of the injection needle (21), and the bottom of the sealing box (631) is provided with a through hole.

4. A liquid automatic sampling device for chlorosilanes according to claim 3, characterized in that: The sealing assembly (6) further comprises a second rubber layer (633) fixedly sleeved on the inner side wall of the through hole.

5. A liquid automatic sampling device for chlorosilanes according to claim 4, characterized in that: The sampling assembly (2) further comprises a first connecting arm detachably connected to the output end of the first electric telescopic rod (22), the end of the first connecting arm is fixedly connected with a circular plate (23), the bottom of the circular plate (23) is fixedly inserted with a fixed tube (24), the top end of the injection needle (21) is communicated with the bottom end of the fixed tube (24), the sampling assembly (2) further comprises a first liquid pump (25) fixedly installed on the top of the outer shell (1), the liquid outlet end of the first liquid pump (25) is communicated with a sample delivery tube (26), the liquid outlet end of the sample delivery tube (26) penetrates through the top of the circular plate (23) and is communicated with the top end of the fixed tube (24), and the sampling assembly (2) further comprises a sample inlet tube (27), the liquid inlet end of the sample inlet tube (27) is communicated with a pipeline through which chlorosilane liquid flows or a tank body storing chlorosilane liquid, and the liquid outlet end of the sample inlet tube (27) penetrates through the side wall of the outer shell (1) and is communicated with the liquid inlet end of the first liquid pump (25).

6. A liquid automatic sampling device for chlorosilanes according to claim 5, characterized in that: The sealing assembly (6) further comprises a circular hole (634) formed on the side of the sealing box (631), the second rubber layer (633) is a circular truncated cone, and the second liquid pump (7) is fixedly installed on the top of the outer shell (1), the liquid inlet end of the second liquid pump (7) is communicated with a liquid inlet pipe, the liquid inlet end of the liquid inlet pipe is communicated with an external cleaning liquid container, the liquid outlet end of the second liquid pump (7) is communicated with a cleaning pipe (8), the liquid outlet end of the cleaning pipe (8) is communicated with the sample feeding pipe (26), the third liquid pump (9) is fixedly installed on the top of the outer shell (1), the liquid inlet end of the third liquid pump (9) is communicated with a liquid discharge pipe (10), the liquid inlet end of the liquid discharge pipe (10) is communicated with the circular hole (634), and the liquid outlet end of the third liquid pump (9) is communicated with a liquid collecting pipe, and the liquid collecting pipe is communicated with a liquid collecting tank.

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