A sampling device for chemical detection

Abstract

The utility model relates to a kind of sampling device for chemical detection.The bottom of storage cylinder is equipped with water tank, the inside of water tank is equipped with connecting pipe, piston for being convenient for control water to flush the inside of sampling needle is installed in connecting pipe, the bottom of storage cylinder is equipped with heating pipe for drying the inner wall of sampling needle.The utility model can control water to flush the inner cavity of sampling needle by the movement of piston in connecting pipe when sampling different liquids, and the movement of piston in connecting pipe can also promote the evaporation rate of moisture when drying the inner cavity of sampling needle, so as to dry sampling needle quickly.The utility model does not need to replace sampling needle frequently when used, saves resources and reduces use cost.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, and in particular to a sampling device for chemical detection. Background Technology

[0002] Chemical testing refers to the use of various chemical analysis methods and techniques to determine the components, concentrations, or characteristics of a sample. These tests can be applied in many fields, including environmental monitoring, food safety, pharmaceutical research and development, and industrial production control. Chemical testing requires the use of sampling devices to obtain samples.

[0003] For example, Chinese patent application CN202422748545.2 discloses a sampling device for chemical detection. Specifically, to prevent mixing of different liquid samples, a port is provided on one side of the storage cylinder, and a sampling needle is inserted into the port. One side of the sampling needle engages with a disposable sampler, facilitating the disassembly and replacement of the sampling needle, allowing different disposable samplers to use different sampling needles. However, it still has the following technical problems: When sampling different liquids, it is necessary to change the sampling needle. Frequent needle changes are cumbersome and can easily lead to a waste of resources. Utility Model Content

[0004] To address the cumbersome operation of frequently changing sampling needles as mentioned in the background section, this utility model provides the following technical solution: A sampling device for chemical detection includes a storage cylinder for storing a sampler, and a sampler connecting tube is provided at the bottom of the sampler. The bottom of the storage cylinder is equipped with a sampling needle to facilitate sampling with a sampler.

[0005] A water tank is installed at the bottom of the storage cylinder, and a connecting pipe is installed inside the water tank. A piston is installed inside the connecting pipe to facilitate the control of water rinsing the inside of the sampling needle. A heating tube for drying the inner wall of the sampling needle is installed at the bottom of the storage cylinder.

[0006] Furthermore, a support frame is installed at the lower end of the inner cavity of the storage tube, a storage battery is installed at the bottom of the inner cavity of the storage tube, a switch is installed on one side of the storage tube, a heating wire is installed inside the heating tube, and a limit groove is formed on one side of the storage tube.

[0007] Furthermore, one side of the connecting pipe is located inside the water tank, and the upper end of one side of the connecting pipe is provided with multiple water inlet holes for supplying water to the inner cavity of the connecting pipe, and the water inlet holes are located inside the water tank.

[0008] Furthermore, one end of the connecting pipe is connected to a flexible hose, and the piston can be moved to the lower right side of the water inlet.

[0009] Furthermore, a piston rod is installed at one end of the piston, and a handle is installed at one end of the piston rod.

[0010] Furthermore, the sampling needle includes a needle body, a connector is installed at the upper end of the needle body, a conical hole is opened in the middle of the connector, and a rubber layer is installed on the inner wall of the conical hole.

[0011] Furthermore, a threaded hole is provided on one side of the connector, a limit rod is installed on one side of the connector, and a screw rod that is screwed into the threaded hole is installed on one side of the limit rod.

[0012] Furthermore, a hose connector is installed on one side of the connector to connect with the hose, an annular hole communicating with the hose connector is opened inside the connector, multiple through holes communicating with the annular hole are opened at the upper end of the rubber layer, and a limit ring is installed at the upper end of the connector.

[0013] Compared with the prior art, the beneficial effects of this utility model are: When sampling different liquids, this invention allows for the control of water flushing the inner cavity of the sampling needle by moving the piston within the connecting tube. Furthermore, when drying the inner cavity of the sampling needle, the movement of the piston within the connecting tube also promotes the rate of water evaporation, facilitating rapid drying of the sampling needle. In practical use, this invention eliminates the need for frequent replacement of the sampling needle, saving resources and reducing operating costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the heating tube of this utility model; Figure 3 This is a schematic diagram of the internal structure of the water tank of this utility model; Figure 4 This is a schematic diagram of the internal structure of the sampling needle of this utility model; Figure 5 This utility model Figure 4 Enlarged view of point A.

[0015] The following is a list of component names represented by the various reference numerals in the attached figures: 10-Sampling device bottom connecting pipe, 100-Storage cylinder, 101-Support frame, 102-Battery, 103-Switch, 104-Heating tube, 105-Heating wire, 106-Limiting slide, 110-Water tank, 111-Connecting pipe, 112-Hose, 113-Water inlet, 114-Piston, 115-Piston rod, 116-Handle; 200-Sampling needle, 210-Needle body, 220-Connector, 221-Conical hole, 222-Threaded hole, 223-Limiting rod, 224-Screw, 225-Rubber layer, 226-Through hole, 227-Annular hole, 228-Hose connector, 229-Limiting ring. Detailed Implementation

[0016] The preferred embodiments of this utility model are described in detail below, and a clear and complete explanation is given in conjunction with the accompanying drawings.

[0017] Please see Figures 1-5 This utility model provides a sampling device for chemical detection, including a storage cylinder 100 for storing the sampler. The prior art CN202422748545.2 discloses a storage mechanism and a sampling mechanism in the storage mechanism. This utility model will not provide a specific description. The bottom of the sampler provided by this utility model is fixedly provided with a sampler connecting pipe 10.

[0018] A support frame 101 is installed at the lower end of the inner cavity of the storage cylinder 100. The support frame 101 is used to support the sampling mechanism in the prior art, and the annular slider in the prior art is installed at the upper end of the support frame 101. A storage battery 102 is installed at the bottom of the inner cavity of the storage cylinder 100, and a switch 103 is installed on one side of the storage cylinder 100. The storage battery 102 provides power to the heating wire 105 so that the heating wire 105 can heat the sampling needle 200 to accelerate the evaporation of water droplets on the inner wall of the sampling needle 200. The switch 103 can control the opening and closing of the heating wire 105. The switch 103 is prior art, so it is not described in detail in this utility model.

[0019] A water tank 110 is installed at the bottom of the storage cylinder 100. A connecting pipe 111 is fixedly installed inside the water tank 110, and the right side of the connecting pipe 111 is located inside the water tank 110. Multiple water inlet holes 113 are opened at the upper right end of the connecting pipe 111 for conveying water into the inner cavity of the connecting pipe 111. The water inlet holes 113 are located inside the water tank 110 so that water in the water tank 110 can be conveyed to the inner cavity of the connecting pipe 111 through the water inlet holes 113. A water inlet pipe is installed at the upper end of the water tank 110 so that clean water can be conveyed into the water tank 110 when the water level in the water tank 110 drops.

[0020] One end of the connecting tube 111 is connected to a flexible tube 112. A piston 114 is installed inside the connecting tube 111 to facilitate the control of water flushing of the sampling needle 200. The piston 114 can be moved to the right side of the connecting tube 111, so that the piston 114 is located at the lower right end of the water inlet 113. The piston 114 divides the inner cavity of the connecting tube 111 into a left chamber and a right chamber. Water can enter the left chamber of the connecting tube 111 through the water inlet 113. A piston rod 115 is fixedly installed at one end of the piston 114. A piston is installed at the contact point between piston 115 and water tank 110 to prevent water leakage. A handle 116 is fixedly installed at one end of piston rod 115. When the handle 116 is pushed to the left, piston rod 115 drives piston 114 to move to the left side of connecting pipe 111, thereby pushing the water in the left chamber of connecting pipe 111 into hose 112, and then transporting it to the inside of sampling needle 200 through hose 112, so as to flush the inside of sampling needle 200 and flush away the sample inside sampling needle 200.

[0021] The bottom of the storage cylinder 100 is equipped with a sampling needle 200 for easy sampling with a sampler. The sampling needle 200 includes a needle body 210. The bottom of the storage cylinder 100 is equipped with a heating tube 104 for drying the inner wall of the sampling needle 200. A heating wire 105 is installed inside the heating tube 104, and the heating tube 104 is sleeved on the outside of the needle body 210. When the switch 103 is turned on, the heating wire 105 heats the outside of the needle body 210. Through thermal radiation, the inner cavity of the needle body 210 can be heated to evaporate the moisture inside the needle body 210.

[0022] A connector 220 is fixedly installed at the upper end of the needle body 210. A tapered hole 221 is opened in the middle of the connector 220. A rubber layer 225 is fixedly installed on the inner wall of the tapered hole 221. By setting the tapered hole 221, when the sampling needle 200 moves upward, the rubber layer 225 can abut against the bottom of the sampler connecting tube 10 to ensure that the sample can enter the sampler.

[0023] A threaded hole 222 is provided on one side of the connector 220, and a limiting rod 223 is installed on the left side of the connector 220. A screw 224 that is screwed into the threaded hole 222 is fixedly installed on one side of the limiting rod 223. The screw 224 is screwed into the threaded hole 222, thus fixing the 2223 to the left side of the connector 220. A limiting groove 106 is provided on one side of the storage cylinder 100, and the limiting rod 223 slides in the limiting groove 106. The limiting groove 106 is an L-shaped cavity. When the limiting rod 223 slides into the transverse groove of the limiting groove 106, the bottom of the sampler connecting tube 10 abuts against the rubber layer 225.

[0024] A hose connector 228 connected to the hose 112 is installed on one side of the connector 220. An annular hole 227 communicating with the hose connector 228 is opened inside the connector 220. Multiple through holes 226 communicating with the annular hole 227 are opened at the upper end of the rubber layer 225. The through holes 226 are located above the connection between the sampler connecting tube 10 and the rubber layer 225, so that when water is sprayed out of the through holes 226, the inner wall of the rubber layer 225 can be rinsed. A limit ring 229 is fixedly installed at the upper end of the connector 220 to prevent water from splashing.

[0025] This invention can extract non-sticky and colored samples. Before extracting different samples, the limiting rod 223 is slid to the bottom of the limiting groove 106, so that the sampler connecting tube 10 is away from the connector 220. Then, the handle 116 is pulled to the right, so that the piston 114 moves to the rightmost side of the inner cavity of the connecting tube 111, allowing water in the water tank 110 to enter the inner cavity of the connecting tube 111 through the water inlet 113. When the handle 116 is pushed to the left, the water in the connecting tube 111 enters the annular hole 227 through the hose 112 and hose connector 228, and is delivered to multiple through holes 226 through the annular hole 227 to rinse the inner wall of the rubber layer 225. As the water flows downward, it also rinses the inner wall of the needle body 210. This allows for rapid rinsing of the inner wall of the needle body 210. During rinsing, the heating wire 105 heats the needle body 210. Once the rinsed water is free of impurities, the inner wall of the needle body 210 is considered clean. The heating wire 105 continues to heat the water, causing it to evaporate from the inner cavity of the needle body 210. The piston 114 is then extended and retracted on the left side of the inner cavity of the connecting tube 111, positioning it to the left of the water inlet 113. This prevents water from entering the left chamber of the connecting tube 111. The extension and retraction of the piston 114 accelerates the airflow within the needle body 210 and the connector 220, thereby accelerating water vapor evaporation and facilitating rapid drying of the inner walls of the needle body 210 and the connector 220, thus enabling the extraction of other samples.

[0026] Based on the above description and accompanying drawings, those skilled in the art can understand and implement this utility model. Furthermore, any non-creative modifications made to this utility model by those skilled in the art without inventive effort are still within the protection scope of this utility model.

Claims

1. A sampling device for chemical detection, comprising a storage cylinder (100) for storing a sampler, and a sampler connecting tube (10) provided at the bottom of the sampler, characterized in that: The bottom of the storage cylinder (100) is equipped with a sampling needle (200) to facilitate sampling of samples in conjunction with a sampler. A water tank (110) is installed at the bottom of the storage cylinder (100), and a connecting pipe (111) is installed inside the water tank (110). A piston (114) is installed inside the connecting pipe (111) to facilitate the control of water rinsing the inside of the sampling needle (200). A heating tube (104) for drying the inner wall of the sampling needle (200) is installed at the bottom of the storage cylinder (100).

2. The sampling device for chemical detection according to claim 1, characterized in that: A support frame (101) is installed at the lower end of the inner cavity of the storage cylinder (100), a storage battery (102) is installed at the bottom of the inner cavity of the storage cylinder (100), a switch (103) is installed on one side of the storage cylinder (100), a heating wire (105) is installed inside the heating tube (104), and a limit groove (106) is opened on one side of the storage cylinder (100).

3. The sampling device for chemical detection according to claim 1, characterized in that: One side of the connecting pipe (111) is located inside the water tank (110). The upper end of one side of the connecting pipe (111) is provided with a plurality of water inlet holes (113) for supplying water to the inner cavity of the connecting pipe (111), and the water inlet holes (113) are located inside the water tank (110).

4. A sampling device for chemical detection according to claim 3, characterized in that: One end of the connecting pipe (111) is connected to a flexible hose (112), and the piston (114) can be moved to the lower right side of the water inlet (113).

5. A sampling device for chemical detection according to claim 4, characterized in that: A piston rod (115) is installed at one end of the piston (114), and a handle (116) is installed at one end of the piston rod (115).

6. A sampling device for chemical detection according to claim 4, characterized in that: The sampling needle (200) includes a needle body (210), a connector (220) is installed at the upper end of the needle body (210), a conical hole (221) is opened in the middle of the connector (220), and a rubber layer (225) is installed on the inner wall of the conical hole (221).

7. A sampling device for chemical detection according to claim 6, characterized in that: The connector (220) has a threaded hole (222) on one side, a limit rod (223) is installed on one side of the connector (220), and a screw (224) is installed on one side of the limit rod (223) and screwed into the threaded hole (222).

8. A sampling device for chemical detection according to claim 6, characterized in that: A hose connector (228) connected to the hose (112) is installed on one side of the connector (220). An annular hole (227) communicating with the hose connector (228) is opened inside the connector (220). Multiple through holes (226) communicating with the annular hole (227) are opened at the upper end of the rubber layer (225). A limit ring (229) is installed at the upper end of the connector (220).

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