Instrument for detecting volatile organic compounds in water

Abstract

The utility model provides water volatile organic compound detection instrument relates to water quality detection instrument technical field to solve in water sample collection stage and subsequent placement, shift to the process of detection instrument, it is difficult to avoid air mixing completely, causes the detection data to have error, influences the problem of water quality judgment, including: Control block, the bottom of control block is firmly connected with heating outer control block, the outside of heating outer control block is firmly connected with heating outer cylinder, the top of control block is firmly connected with detection main part, the inside of heating outer cylinder is firmly inserted with sampling sleeve, the inside of sampling sleeve is slidably connected with pull sampling rod. Through pull sampling rod can complete water sample collection, the thread connection design of sealing top cap guarantees the sealing property of sampling process, avoids the excessive contact of water sample collection and air, at the same time, the internal groove cooperation of disconnecting plug and butt joint can quickly transport volatile gas to detection main part, and it is convenient to directly detect and handle the water volatile organic compound.

Description

Technical Field

[0001] This utility model belongs to the technical field of water quality testing instruments, and more specifically, it relates to an instrument for detecting volatile organic compounds in water. Background Technology

[0002] Volatile organic compounds (VOCs) in water are a class of organic compounds that have high vapor pressure and are easily volatilized at normal temperature and pressure. The pollution sources of VOCs in water mainly come from multiple fields such as industry, agriculture, and daily life. With the increasing demand for water and a large amount of water pollution, some water resources are difficult to use in daily life and production. Therefore, a detection instrument is needed to detect and treat VOCs in water.

[0003] For example, application number 202321106178.5 discloses a water volatile organic compound detector, including a detector, a detection rod fixed on the detector, a detection head installed on the detection rod, a sealing mechanism on one side of the detector, a connecting mechanism between the detector and the sealing mechanism, and a detection chamber on the sealing mechanism. When the detector needs to be used, the water sample to be tested is first poured into the detection chamber, and then the detection chamber is sealed using the sealing mechanism. The detection rod and detection head of the detector are then inserted into the sealing mechanism via the connecting mechanism. The organic compounds in the detection chamber then volatilize, come into contact with the detection head, and are recorded and analyzed by the detector. By sealing the detection chamber with the sealing mechanism and then using only the connecting mechanism for continuous detection, the possibility of contact with external air can be reduced, further improving the accuracy of the detection.

[0004] Based on existing technologies, it has been found that existing water volatile organic compound (VOC) detection instruments require water samples to be collected and processed in advance, and then placed in the instrument after collection and processing. During the water sample collection stage and subsequent placement and transfer to the instrument, it is difficult to completely avoid air mixing, which can easily lead to the sealing of ambient air and water sample together, resulting in errors in the detection data and affecting the judgment of water quality. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model relates to a water volatile organic compound (VOC) detection instrument, which solves the problem that during the water sample collection stage and subsequent placement and transfer to the detection instrument, it is difficult to completely prevent air from mixing in, which can easily lead to the sealing of ambient air and water sample together, resulting in errors in the detection data and affecting the judgment of water quality.

[0006] This utility model provides an instrument for detecting volatile organic compounds in water, achieved through the following specific technical means: A water volatile organic compound (VOC) detection instrument includes: a control block; a control plate fixed to the outer wall of the control block; an external control handle fixed to the outer wall of the control block; a heating external control block fixed to the bottom of the control block; a heating outer cylinder fixed to the outside of the heating external control block; a detection body fixed to the top of the control block; a connecting joint on the outside of the control block; a connecting middle plate on the outside of the control block; a sampling sleeve fixedly inserted inside the heating outer cylinder; a sampling tube head inserted into the sampling sleeve via a connector; a docking bracket fixed to the outer wall of the sampling tube head for engaging with a threaded rod on the connecting middle plate; an intermittent inner groove on the inner wall of the sampling sleeve; a docking plug fixed to the outer wall of the sampling sleeve; a sealing cap threaded to the top of the sampling sleeve; and a pull-out sampling rod slidably connected inside the sampling sleeve.

[0007] Preferably, the control block has a control center inside, a communication component inside, and two connecting plates on its outer wall; the control plates are electrically connected to the control center of the control block.

[0008] Preferably, the heating outer control block is electrically connected to the control center of the control block; the heating outer cylinder is provided with a heating component inside, and the heating component of the heating outer cylinder is electrically connected to the heating outer control block.

[0009] Preferably, the detection body has a detection component inside; the detection component of the detection body is electrically connected to the control center of the control block, and the detection component of the detection body is connected to the communication component of the control block.

[0010] Preferably, the connector is connected to the communication component of the control block; the two sides of the connecting plate are respectively provided with threaded rods for cooperating with the connecting plate of the control block.

[0011] Preferably, the sampling sleeve has a hollow internal structure, a connector is provided at the bottom of the sampling sleeve, and a thread is provided on the top outer wall of the sampling sleeve; the docking plug is connected to the intermittent inner groove, and the docking plug can be inserted into the inside of the docking connector.

[0012] Preferably, the sealing cap has a shaft hole; the pull-out sampling rod is movably connected in the shaft hole of the sealing cap.

[0013] The water volatile organic compound detection instrument proposed in this utility model has the following beneficial effects: 1. Water sample collection can be completed by pulling the sampling rod. The threaded connection design of the sealed top cap ensures the airtightness of the sampling process and avoids excessive contact between the collected water sample and air. Water sample collection and heating pretreatment are integrated into the sampling sleeve. The heating outer control block drives the heating outer cylinder to heat precisely under the control of the control block, which can directly promote the rapid evaporation of the water sample in the sampling sleeve. At the same time, the time-interrupted inner tank, together with the docking plug and connector, can quickly deliver the volatile gas to the detection body, which is convenient for direct detection and treatment of volatile organic compounds in water. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the three-dimensional assembly structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the three-dimensional assembly structure of this utility model from a bottom view.

[0016] Figure 3 This is an exploded structural diagram of the present invention.

[0017] Figure 4 This is an exploded bottom view structural diagram of this utility model.

[0018] Figure 5 This is a partial cross-sectional structural diagram of the present invention.

[0019] Figure 6 This utility model is composed of Figure 5 A schematic diagram of the enlarged structure of part A.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Control block; 2. Control board; 3. External control handle; 4. Heating external control block; 5. Heating outer cylinder; 6. Detection body; 7. Connecting connector; 8. Connecting middle plate; 9. Sampling sleeve; 10. Sampling tube head; 11. Connecting outer frame; 12. Intermittent inner groove; 13. Connecting plug; 14. Sealing top cap; 15. Pull-out sampling rod. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0022] Example 1: As shown in the attached document Figure 1 To be continued Figure 6As shown: This utility model provides a volatile organic compound (VOC) detection instrument in water, including: a control block 1; the control block 1 is used to control the entire device to facilitate the detection and processing of water samples; a control plate 2 is fixedly connected to the outer wall of the control block 1; the control plate 2 is used to adjust the device parameters to facilitate the detection and processing of VOCs in the water sample; an external control handle 3 is fixedly connected to the outer wall of the control block 1; the external control handle 3 is used to assist the operator in operating the device; a heating external control block 4 is fixedly connected to the bottom of the control block 1; the heating external control block 4 is used to control the heating outer cylinder 5 under the control of the control block 1 to perform heating treatment; the heating outer cylinder 5 is fixedly connected to the outside of the heating external control block 4; The outer heating cylinder 5 is used for heating under the control of the heating control block 4 to assist in heating the water sample inside the sampling sleeve 9, thereby facilitating rapid evaporation of the water sample and enabling the detection of volatile organic compounds in the water. A detection body 6 is fixedly attached to the top of the control block 1. The detection body 6 is used to detect the volatile gases entering the interior, facilitating the detection of volatile organic compounds in the water. A connecting joint 7 is provided on the outside of the control block 1. The connecting joint 7 is used to connect the sampling sleeve 9 and the detection body 6 with the connecting plug 13, facilitating the transport of volatile gases. A connecting middle plate 8 is provided on the outside of the control block 1. The connecting middle plate 8 is used to assist in the overall assembly of the device. The device is connected to the heating outer cylinder 5 to ensure overall stability. A sampling sleeve 9 is fixedly inserted inside the heating outer cylinder 5. The sampling sleeve 9 stores the collected water sample and pre-treats the sample directly under the heating outer cylinder 5, preventing sample evaporation. A sampling tube head 10 is connected to the sampling sleeve 9 via a connector. The sampling tube head 10 is used for point-to-point sampling by extending into the water, facilitating the detection of volatile organic compounds in the water. A docking frame 11 is fixed to the outer wall of the sampling tube head 10 to mate with the threaded rod on the connecting middle plate 8. The docking frame 11 works with the connecting middle plate 8 to secure the sampling sleeve 9, ensuring its stability. An intermittent inner groove 12 is provided on the inner wall of the sampling sleeve 9; the intermittent inner groove 12 is used to interrupt the collection of water samples and, together with the control block 1 and the docking plug 13, transports and processes volatile gases; the docking plug 13 is fixedly connected to the outer wall of the sampling sleeve 9; the docking plug 13 is used to cooperate with the docking connector 7 to transport and process volatile gases from the water sample, so as to facilitate the detection and processing of volatile organic compounds; a sealing cap 14 is threadedly connected to the top of the sampling sleeve 9; the sealing cap 14 is used to assist in sealing the sampling sleeve 9, so as to facilitate the pulling and sampling of the sampling rod 15; the internal sliding connection of the sampling sleeve 9 is the pulling and sampling rod 15; the pulling and sampling rod 15 is used to collect and process water samples by pulling.

[0023] Example 2: Based on Example 1, as shown in the appendix Figure 1 To be continued Figure 6As shown, the control block 1 has a control center inside, a communication component inside, and two connecting plates on the outer wall of the control block 1; the control plate 2 is electrically connected to the control center of the control block 1.

[0024] The heating outer control block 4 is electrically connected to the control center of the control block 1; the heating outer cylinder 5 is equipped with a heating component inside, and the heating component of the heating outer cylinder 5 is electrically connected to the heating outer control block 4.

[0025] The detection body 6 has a detection component inside; the detection component of the detection body 6 is electrically connected to the control center of the control block 1, and the detection component of the detection body 6 is connected to the communication component of the control block 1.

[0026] The connector 7 is connected to the communication component of the control block 1; the two sides of the connecting plate 8 are respectively provided with threaded rods for cooperating with the connecting plate of the control block 1.

[0027] The sampling sleeve 9 has a hollow internal structure, a connector at the bottom, and threads on the top outer wall. The mating plug 13 is connected to the intermittent inner groove 12 and can be inserted into the inside of the mating connector 7.

[0028] The sealing cap 14 has a shaft hole; the pull-out sampling rod 15 can be movably connected in the shaft hole of the sealing cap 14.

[0029] The specific usage and function of this embodiment are as follows: In this invention, the sampling tube head 10 is inserted downwards into the target depth of the water body to be tested, ensuring that the sampling tube head 10 is completely submerged. Then, one hand holds the external control handle 3 to fix the sampling sleeve 9, while the other hand presses down to pull the sampling rod 15 to the bottom to expel air from the sampling sleeve 9. Next, the sampling rod 15 is slowly pulled upwards, drawing the water sample into the sampling sleeve 9 through negative pressure. The sampling tube head 10 is then quickly removed from the water, and the bottom is sealed. Finally, the heating external control block 4 is activated via the control block 1 to control the heating of the outer cylinder 5. The heating component operates, heating the water sample inside the sampling sleeve 9 through heat conduction. After the water sample is heated, the volatile organic compounds quickly evaporate into gas, which accumulates upward along the intermittent inner groove 12 on the inner wall of the sampling sleeve 9. It enters the communication component of the control block 1 through the docking plug 13 and the docking connector 7, and delivers the volatile gas to the detection component inside the detection body 6. The detection component analyzes the type and concentration of volatile organic compounds in the gas and transmits the data to the control center in real time to complete the detection and processing of volatile organic compounds in the water.

[0030] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0031] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0032] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. Instruments for detecting volatile organic compounds in water, including: Control block (1); characterized in that: a control plate (2) is fixedly connected to the outer wall of the control block (1); an external control handle (3) is fixedly connected to the outer wall of the control block (1); a heating external control block (4) is fixedly connected to the bottom of the control block (1); a heating outer cylinder (5) is fixedly connected to the outside of the heating external control block (4); a detection body (6) is fixedly connected to the top of the control block (1); a connecting joint (7) is provided on the outside of the control block (1); a connecting middle plate (8) is provided on the outside of the control block (1); and the heating outer cylinder (5) is fixedly inserted inside. A sampling sleeve (9) is provided; a sampling tube head (10) is inserted into the sampling sleeve (9) through a connector; a docking bracket (11) for cooperating with a threaded rod on the connecting plate (8) is fixed on the outer wall of the sampling tube head (10); an intermittent inner groove (12) is provided on the inner wall of the sampling sleeve (9); a docking plug (13) is fixed on the outer wall of the sampling sleeve (9); a sealing cap (14) is threadedly connected to the top of the sampling sleeve (9); a pull-out sampling rod (15) is slidably connected inside the sampling sleeve (9).

2. The water volatile organic compound detection instrument according to claim 1, characterized in that: The control block (1) has a control center inside, a communication component inside, and two connecting plates on the outer wall of the control block (1); the control plate (2) is electrically connected to the control center of the control block (1).

3. The water volatile organic compound detection instrument according to claim 1, characterized in that: The heating outer control block (4) is electrically connected to the control center of the control block (1); the heating outer cylinder (5) is equipped with a heating component inside, and the heating component of the heating outer cylinder (5) is electrically connected to the heating outer control block (4).

4. The water volatile organic compound detection instrument according to claim 1, characterized in that: The detection body (6) is equipped with a detection component inside; the detection component of the detection body (6) is electrically connected to the control center of the control block (1), and the detection component of the detection body (6) is connected to the communication component of the control block (1).

5. The water volatile organic compound detection instrument according to claim 1, characterized in that: The connector (7) is connected to the communication component of the control block (1); the two sides of the connecting plate (8) are respectively provided with threaded rods for cooperating with the connecting plate of the control block (1).

6. The water volatile organic compound detection instrument according to claim 1, characterized in that: The sampling sleeve (9) has a hollow structure inside. The bottom of the sampling sleeve (9) is provided with a connector. The top outer wall of the sampling sleeve (9) is provided with threads. The docking plug (13) is connected to the intermittent inner groove (12). The docking plug (13) can be inserted into the inside of the docking connector (7).

7. The water volatile organic compound detection instrument according to claim 1, characterized in that: The sealing cap (14) has a shaft hole; the pull-out sampling rod (15) can be movably connected in the shaft hole of the sealing cap (14).

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