Negative pressure type sampling device for high-purity ethyl silicate

Abstract

The utility model provides a negative pressure type sampling device for high purity ethyl silicate, which relates to the technical field of negative pressure type sampling devices, and comprises a cylinder, the bottom end of the interior of the cylinder is fixedly connected with a limiting ring, the interior of the limiting ring is connected with a fixed plate in a clamping manner, and the middle of the fixed plate is connected with a rotating shaft in a penetrating manner; the middle of the bottom end of the rotating shaft is fixedly connected with a rotating motor, one side of the rotating motor is fixedly connected with a fixing plate, one end of the fixing plate is fixedly connected to one side of the bottom end of the rotating shaft, and under the cooperation of the rotating motor, the rotating shaft, the cleaning plate, the soft cushion and the support, the rotating shaft can be driven to rotate under the action of the rotating motor; and in the rotating process of the rotating shaft, the support and the cleaning plate can be synchronously driven to rotate, the inner wall of the cylinder can be conveniently wiped by the soft cushion, and the situation that impurities remain on the inner wall of the cylinder in the long-time using process, and the concentration of ethyl ester is affected is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of negative pressure sampling devices, in particular to a negative pressure sampling device for high-purity tetraethyl orthosilicate. Background Art

[0002] Tetraethyl orthosilicate (TEOS, tetraethoxysilane) is a commonly used chemical reagent, especially in the fields of microelectronics, precision casting, etc., and has important applications. It has extremely high requirements for purity. The negative pressure sampling device can effectively prevent external pollutants from entering the sampling system by maintaining an environment with a relatively lower pressure than the outside world, ensuring that the sample is not contaminated and maintaining its high-purity characteristics. Tetraethyl orthosilicate has certain volatility and irritation, which may pose a health risk to operators. The negative pressure system can reduce the leakage of chemical vapors and lower the concentration of harmful substances in the laboratory environment, ensuring operation safety. The negative pressure device is usually designed with precise control mechanisms, such as regulating valves or pumps, which can accurately control the sampling volume and speed. This is particularly important for high-precision experimental analysis. It helps to obtain representative samples and avoid analysis errors caused by improper sampling methods.

[0003] However, in the existing negative pressure sampling device for high-purity tetraethyl orthosilicate, impurities are likely to appear on the inner wall of the sampling device during long-term use, resulting in a decrease in the concentration of ethyl ester and affecting the subsequent use effect. Therefore, a new type of negative pressure sampling device for high-purity tetraethyl orthosilicate needs to be proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned problem that impurities are likely to appear on the inner wall of the sampling device during long-term use, resulting in a decrease in the concentration of ethyl ester and affecting the subsequent use effect, and to propose a negative pressure sampling device for high-purity tetraethyl orthosilicate.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A negative pressure sampling device for high-purity tetraethyl orthosilicate, including a cylinder. A limiting ring is fixedly connected to the bottom end inside the cylinder. A fixing plate is snap-fitted inside the limiting ring. A rotating shaft is inserted through the middle of the fixing plate. A rotating motor is fixedly connected to the middle of the bottom end of the rotating shaft. A clamping block is fixedly connected to one side of the rotating motor. One end of the clamping block is fixedly connected to one side of the bottom end of the rotating shaft. A plurality of sets of brackets are fixedly connected to the top end of the rotating shaft. A cleaning plate is fixedly connected to one side of the plurality of sets of brackets. A soft pad is arranged on one side of the cleaning plate. The soft pad is slidably connected to the inner wall of the cylinder.

[0006] Preferably, a first suction pipe is inserted through the top end of the cylinder. A sealing gasket is connected to the junction of the first suction pipe and the cylinder.

[0007] Preferably, one end of the first straw is tightly connected to a hose, and the bottom end of the hose is tightly connected to a connector.

[0008] Preferably, the bottom end of the connector is tightly connected to a filter plate, and one side of the top end of the cylinder is inserted and connected with a round tube.

[0009] Preferably, a second straw is tightly connected inside the round tube, and a protective cotton is sleeved on the periphery of the second straw.

[0010] Preferably, one end of the second straw is communicated with a conduit, and one end of the conduit is connected to a micro pump.

[0011] Preferably, the bottom end of the micro pump is tightly connected to a bearing plate, and one side of the bearing plate is tightly connected to the outer side of the cylinder.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0013] 1. In the present utility model, with the cooperation of the rotating motor, rotating shaft, cleaning plate, soft pad and bracket, under the action of the rotating motor, the rotating shaft can be driven to rotate. During the rotation of the rotating shaft, the bracket and the cleaning plate can be synchronously driven to rotate, which is convenient for the soft pad to wipe the inner wall of the cylinder, preventing impurities from remaining on the inner wall of the cylinder during long-term use and affecting the concentration of ethyl silicate.

[0014] 2. In the present utility model, with the cooperation of the filter plate, hose, connector and first straw, the hose can be used to extend the lengths of the connector and the first straw, facilitating the adjustment of the filter plate to a suitable height to suck ethyl silicate. The filter plate can filter impurities inside the ethyl silicate, thereby improving the purity of ethyl silicate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic cross-sectional structure diagram of a negative pressure type sampling device for high-purity ethyl silicate proposed by the present utility model;

[0016] Figure 2 FIG. is a schematic three-dimensional structure diagram of a negative pressure type sampling device for high-purity ethyl silicate proposed by the present utility model;

[0017] Figure 3 FIG. is a schematic side view structure diagram of a negative pressure type sampling device for high-purity ethyl silicate proposed by the present utility model;

[0018] Figure 4 FIG. is a schematic partial structure diagram of a negative pressure type sampling device for high-purity ethyl silicate proposed by the present utility model.

[0019] Legend: 1. Cylinder; 2. Filter plate; 3. Hose; 4. Connector; 5. First straw; 6. Gasket; 7. Round tube; 8. Protective cotton; 9. Second straw; 10. Micro pump; 11. Load-bearing plate; 12. Duct; 13. Rotating motor; 14. Block; 15. Rotating shaft; 16. Limit ring; 17. Cleaning plate; 18. Soft pad; 19. Bracket; 20. Fixed plate. Detailed implementation

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0022] Embodiment 1

[0023] As Figures 1 - 4 shown, the present invention provides a technical solution: a negative pressure type sampling device for high-purity tetraethyl orthosilicate, including a cylinder 1. The inner bottom end of the cylinder 1 is fixedly connected with a limit ring 16. The inside of the limit ring 16 is snap-connected with a fixed plate 20. The middle of the fixed plate 20 is inserted and connected with a rotating shaft 15. The bottom middle of the rotating shaft 15 is fixedly connected with a rotating motor 13. One side of the rotating motor 13 is fixedly connected with a block 14. One end of the block 14 is fixedly connected to one side of the bottom end of the rotating shaft 15. The top end of the rotating shaft 15 is fixedly connected with multiple groups of brackets 19. One side of the multiple groups of brackets 19 is fixedly connected with a cleaning plate 17. One side of the cleaning plate 17 is provided with a soft pad 18. The soft pad 18 is slidably connected to the inner wall of the cylinder 1.

[0024] In this embodiment, the cylinder 1 is provided to facilitate the storage of tetraethyl orthosilicate. Then, under the action of the limit ring 16, the fixed plate 20 can be installed at the inner bottom end of the cylinder 1. Then, the rotating motor 13 is started to drive the rotating shaft 15 to perform a rotating operation. During the rotation of the rotating shaft 15, the brackets 19 and the cleaning plate 17 can be synchronously driven to rotate, facilitating the soft pad 18 to wipe the inner wall of the cylinder 1, preventing impurities from remaining on the inner wall of the cylinder 1 during long-term use and affecting the concentration of tetraethyl orthosilicate. The block 14 can be used to fix the rotating motor 13, preventing the rotating motor 13 from vibrating during use and affecting subsequent use.

[0025] Embodiment 2

[0026] As Figures 1 - 4As shown, the top end of the cylinder 1 is inserted and connected with a first straw 5. A gasket 6 is connected at the junction of the first straw 5 and the cylinder 1. One end of the first straw 5 is firmly connected with a hose 3. The bottom end of the hose 3 is firmly connected with a connector 4. The bottom end of the connector 4 is firmly connected with a filter plate 2. One side of the top end of the cylinder 1 is inserted and connected with a round tube 7. A second straw 9 is firmly connected inside the round tube 7. A protective cotton 8 is sleeved on the periphery of the second straw 9. One end of the second straw 9 communicates with a conduit 12. One end of the conduit 12 is connected with a micro pump 10. The bottom end of the micro pump 10 is firmly connected with a bearing plate 11. One side of the bearing plate 11 is firmly connected to the outer side of the cylinder 1.

[0027] In this embodiment, the hose 3 is provided to extend the lengths of the connector 4 and the first straw 5, facilitating the adjustment of the filter plate 2 to a suitable height. When the filter plate 2 is placed in the liquid, the micro pump 10 is started to cause the second straw 9 to pump the air inside the cylinder 1. During the pumping process, the filter plate 2 and the first straw 5 can suck ethyl silicate into the cylinder 1. The filter plate 2 can filter the impurities contained in the ethyl silicate, thereby improving the purity of the ethyl silicate. The gasket 6 can improve the sealing effect of the overall device. The protective cotton 8 can prevent the second straw 9 from being damaged by external objects, thus increasing the service life of the second straw 9.

[0028] The working principle of this embodiment: When in use, first manually pull the hose 3 to extend the lengths of the connector 4 and the first straw 5, facilitating the adjustment of the filter plate 2 to a suitable height. When the filter plate 2 is placed in the liquid, the micro pump 10 is started to cause the second straw 9 to pump the air inside the cylinder 1. During the pumping process, the filter plate 2 and the first straw 5 can suck ethyl silicate into the cylinder 1. The filter plate 2 can filter the impurities contained in the ethyl silicate, thereby improving the purity of the ethyl silicate. The gasket 6 can improve the sealing effect of the overall device. The protective cotton 8 can prevent the second straw 9 from being damaged by external objects, thus increasing the service life of the second straw 9. When the sampling of ethyl silicate is completed, the rotary motor 13 is started to drive the rotary shaft 15 to perform a rotating operation. During the rotation of the rotary shaft 15, the bracket 19 and the cleaning plate 17 can be synchronously driven to rotate, facilitating the wiping of the inner wall of the cylinder 1 by the soft pad 18, preventing impurities from remaining on the inner wall of the cylinder 1 during long-term use and affecting the concentration of ethyl silicate. The clamping block 14 can fix the rotary motor 13, preventing the rotary motor 13 from vibrating during use and affecting subsequent use.

[0029] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A negative pressure sampling device for high-purity ethyl orthosilicate, characterized in that: The invention comprises a cylinder (1), wherein the inner bottom end of the cylinder (1) is fastened with a limiting ring (16), the inner part of the limiting ring (16) is snap-connected with a fixing plate (20), a rotating shaft (15) is inserted and connected in the middle of the fixing plate (20), a rotating motor (13) is fastened with the middle of the bottom end of the rotating shaft (15), a clamping block (14) is fastened with one side of the rotating motor (13), one end of the clamping block (14) is fixedly connected to one side of the bottom end of the rotating shaft (15), the top end of the rotating shaft (15) is fastened with multiple groups of brackets (19), one side of the multiple groups of brackets (19) is fastened with a cleaning plate (17), one side of the cleaning plate (17) is provided with a soft pad (18), and the soft pad (18) is slidably connected to the inner wall of the cylinder (1).

2. The negative pressure sampling device for high-purity ethyl orthosilicate according to claim 1 is characterized in that: A first suction tube (5) is inserted and connected to the top end of the cylinder (1), and a sealing gasket (6) is connected to the intersection of the first suction tube (5) and the cylinder (1).

3. The negative pressure sampling device for high-purity ethyl orthosilicate according to claim 2 is characterized in that: One end of the first suction tube (5) is tightly connected to a hose (3), and the bottom end of the hose (3) is tightly connected to a connector (4).

4. The negative pressure sampling device for high-purity ethyl orthosilicate according to claim 3 is characterized in that: The bottom end of the connector (4) is fixedly connected to a filter plate (2), and the top end of the cylinder (1) is penetrated and connected to a round tube (7).

5. The negative pressure sampling device for high-purity ethyl orthosilicate according to claim 4 is characterized in that: A second suction tube (9) is fastened to the inside of the circular tube (7), and a protective cotton (8) is sleeved around the circumference of the second suction tube (9).

6. The negative pressure sampling device for high-purity ethyl orthosilicate according to claim 5, characterized in that: One end of the second suction tube (9) is connected to a catheter (12), and one end of the catheter (12) is connected to a micro pump (10).

7. The negative pressure sampling device for high-purity ethyl orthosilicate according to claim 6 is characterized in that: The bottom end of the micro pump (10) is fixedly connected to a load-bearing plate (11), and one side of the load-bearing plate (11) is fixedly connected to the outer side of the cylinder (1).

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