Improved pretreatment device for volatile organic compounds

Abstract

The utility model relates to the technical field of water pollution detection, and discloses a volatile organic compound pretreatment improvement device which comprises a bottom plate, a compression fan is fixedly connected to the right side of the top wall of the bottom plate, and an adsorption halogenated hydrocarbon cold trap device is fixedly installed at the top of the compression fan. Control knobs are rotatably installed at the left end and the right end of the front side of the top wall of the compression fan, rubber strips are fixedly connected to the outer walls of the two control knobs at equal intervals, the rear side of the top wall of the compression fan communicates with a conveying valve, the top end of the conveying valve communicates with a conveying pipe, and a flow adjusting valve is fixedly installed at the left end of the conveying pipe; and the left end of the flow regulating valve is fixedly connected with a copper pipe. According to the device disclosed by the utility model, gas is supplied into the tank body through the compression fan, so that water in the tank body can be blown by the gas with an adsorption characteristic, halogenated hydrocarbon dissolved in liquid in the tank is also adsorbed synchronously, and the condition that a test sample is interfered due to the fact that dichloromethane background is dissolved in water is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water pollution detection, in particular to an improved device for pretreatment of volatile organic compounds. Background Technique

[0002] Testing soil is usually to evaluate the physical, chemical and biological properties of soil and surrounding water quality in order to determine its suitability or as part of agricultural, environmental or engineering projects. Soil generally contains volatile organic compounds, which are a class of organic compounds with relatively high vapor pressure at normal temperature. They can easily volatilize from liquid or solid surfaces into the air and usually come from various industrial processes, vehicle emissions, solvent use, the use of products such as paints and cleaners, as well as biological and natural processes.

[0003] During the process of laboratory detection of the concentration of volatile organic compounds in soil samples, a certain amount of blank reagent water needs to be added to the purge tube in the experimental operation. This step is to ensure the accuracy and reliability of the experimental results. By comparing the reaction results, the purpose of advance testing can be achieved.

[0004] It is found in the test experiment that the content of dichloromethane is very high, and there is a situation where the dichloromethane background in the environment dissolves in water, resulting in interference with the test samples. It is necessary to consider excluding the content of dichloromethane in water. Therefore, an improved device for pretreatment of volatile organic compounds is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides an improved device for pretreatment of volatile organic compounds, aiming to improve the situation where the dichloromethane background in the environment dissolves in water, resulting in interference with the test samples and excluding the content of dichloromethane in water.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: an improved device for pretreatment of volatile organic compounds, including a bottom plate. A compression blower is fixedly connected to the right side of the top wall of the bottom plate. An adsorption halogenated hydrocarbon cold trap device is fixedly installed on the top of the compression blower. Control knobs are rotatably installed at the left and right ends of the front side of the top wall of the compression blower. Rubber strips are equidistantly fixedly connected to the outer walls of the two control knobs. A delivery valve is communicated with the rear side of the top wall of the compression blower. The top end of the delivery valve is communicated with a delivery pipe. A flow regulating valve is fixedly installed at the left end of the delivery pipe. A copper pipe is fixedly connected to the left end of the flow regulating valve. A connector is fixedly connected to the bottom of the copper pipe. A tank body is fixedly connected to the bottom wall of the connector. Fixing mechanisms are arranged on the front and rear sides of the bottom plate.

[0007] Through the above technical solution: the belt can adsorb the air compressor of the halogenated hydrocarbon cold trap device to work. The bottom end of the copper tube is inserted into blank water, and the transported air flow makes the dichloromethane in the blank reagent water dissolve through bubbling, thereby achieving the purpose of reducing the background value.

[0008] As a further description of the above technical solution:

[0009] The fixing mechanism includes vertical plates. The bottom walls of the two vertical plates are respectively fixedly connected to the front and rear sides of the top wall of the bottom plate. A hydraulic rod is fixedly connected inside the vertical plate. The output end of the hydraulic rod is fixedly connected to a connecting shell. Sliding grooves are opened at the left and right ends of the front side of the connecting shell. Threaded knobs are respectively threaded through the left and right ends of the front side of the connecting shell. The rear end of the threaded knob is threadedly connected to a clamping plate. One side of the clamping plate is slidably connected to the inside of the connecting shell.

[0010] Through the above technical solution: turning the threaded knob and sliding the clamping plate can adapt to cans of different specifications, and then starting the hydraulic rod enables the two connecting shells to move towards each other, thereby achieving the purpose of stabilizing the can and reducing the situation where the shaking of the can leads to a reduction in work efficiency.

[0011] As a further description of the above technical solution:

[0012] A control switch is fixedly connected to the front side of the compression blower. The control switch is electrically connected to the compression blower and the hydraulic rod respectively.

[0013] Through the above technical solution: the control switch can control the opening and closing of the device.

[0014] As a further description of the above technical solution:

[0015] A waterproof cover is arranged on the left side of the control switch. The rear side of the waterproof cover is rotatably connected to the front side of the compression blower through a hinge.

[0016] Through the above technical solution: the control switch can be protected from water.

[0017] As a further description of the above technical solution:

[0018] Rubber rings are fixedly connected to the middles of multiple threaded knobs, and rubber pads are fixedly connected to the adjacent sides of multiple clamping plates.

[0019] Through the above technical solution: the rotational damage of the threaded knob to the connecting shell can be reduced, and the fixing effect of the clamping plate is improved.

[0020] As a further description of the above technical solution:

[0021] On the right side of the top of the flow regulating valve, there is an indicator board fixedly connected, and on the left end of the top of the flow regulating valve, there is a rubber sleeve fixedly connected.

[0022] Through the above technical solution: it is convenient to adjust the flow regulating valve, but the anti-slip effect is reduced.

[0023] As a further description of the above technical solution:

[0024] On the outer wall of the connector, there is a sealing column fixedly installed, and the bottom of the sealing column is fixedly connected to the rear side of the top wall of the tank body.

[0025] Through the above technical solution: the sealing effect between the connector and the tank body is improved.

[0026] As a further description of the above technical solution:

[0027] At the four corners of the bottom wall of the bottom plate, there are support plates fixedly connected, and at the bottoms of the plurality of support plates, there are universal wheels fixedly installed.

[0028] Through the above technical solution: it is convenient for the device to be displaced.

[0029] The utility model has the following beneficial effects:

[0030] 1. In the utility model, air is supplied to the tank body through a compression blower, and the air flow is transported through a delivery pipe and a copper pipe. Thus, air bubbles are generated inside the tank body to agitate the water in the tank body. Since the transported gas is the gas that has absorbed halogenated hydrocarbons, the gas with adsorption characteristics will agitate the water in the tank body, and thus the halogenated hydrocarbons dissolved in the liquid in the tank will also be adsorbed synchronously, avoiding the situation that methylene chloride background dissolves in water and causes interference to test samples, and increasing the accuracy of detection.

[0031] 2. In the utility model, the tank body is placed on the top of the bottom plate, and by rotating two threaded knobs, the corresponding clamping plates can be telescopically adjusted according to the tank bodies of different specifications, and then by rotating the threaded knobs, the fixation of the clamping plates is completed, so that the stability of the tank body during operation is improved, the working efficiency of the device is increased, and the generation of shaking of the tank body during operation is reduced. Brief Description of the Drawings

[0032] Figure 1 It is a perspective view of an improved device for pretreatment of volatile organic compounds proposed by the utility model;

[0033] Figure 2 It is a schematic structural view of the delivery pipe of an improved device for pretreatment of volatile organic compounds proposed by the utility model;

[0034] Figure 3Exploded view of the fixing mechanism of an improved device for pretreatment of volatile organic compounds proposed by the present utility model.

[0035] Legend:

[0036] 1. Bottom plate; 2. Fixing mechanism; 201. Vertical plate; 202. Hydraulic rod; 203. Connecting shell; 204. Sliding groove; 205. Threaded knob; 206. Clamping plate; 207. Rubber ring; 208. Rubber pad; 3. Compression blower; 4. Adsorption halogenated hydrocarbon cold trap device; 5. Control knob; 6. Delivery valve; 7. Delivery pipe; 8. Flow regulating valve; 9. Copper pipe; 10. Connector; 11. Tank body; 12. Indicator board; 13. Rubber sleeve; 14. Sealing column; 15. Rubber strip; 16. Control switch; 17. Waterproof cover; 18. Support plate; 19. Universal wheel. Specific implementation mode

[0037] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0038] Refer to Figure 1 and Figure 2 , an embodiment provided by the present utility model: an improved device for pretreatment of volatile organic compounds, including a bottom plate 1, a compression blower 3 is fixedly connected to the right side of the top wall of the bottom plate 1, an adsorption halogenated hydrocarbon cold trap device 4 is fixedly installed on the top of the compression blower 3, control knobs 5 are rotatably installed at the left and right ends of the front side of the top wall of the compression blower 3, rubber strips 15 are equidistantly fixedly connected to the outer walls of the two control knobs 5, a delivery valve 6 is communicated with the rear side of the top wall of the compression blower 3, the top end of the delivery valve 6 is communicated with a delivery pipe 7, a flow regulating valve 8 is fixedly installed at the left end of the delivery pipe 7, a copper pipe 9 is fixedly connected to the left end of the flow regulating valve 8, a connector 10 is fixedly connected to the bottom of the copper pipe 9, a tank body 11 is fixedly connected to the bottom wall of the connector 10, and fixing mechanisms 2 are arranged on both the front and rear sides of the bottom plate 1;

[0039] Specifically, start the compression blower 3 and the adsorbed halogenated hydrocarbon cold trap device 4 to start supplying gas to the tank body 11. The gas is sent in through the delivery pipe 7 and further conveyed through the copper pipe 9. The bottom end of the copper pipe 9 is in direct contact with the liquid inside the tank body 11. Inside the tank body 11, the gas passes through the liquid in the form of bubbles. The generation of bubbles is like countless miniature stirrers, greatly increasing the contact area between the gas and the liquid, thereby more effectively adsorbing the halogenated hydrocarbons dissolved in the liquid. This process effectively prevents the background of halogenated hydrocarbons such as dichloromethane from dissolving in water, avoids interfering with the test samples, and significantly improves the accuracy of detection.

[0040] Refer to Figure 1 , a sealing column 14 is fixedly installed on the outer wall of the connector 10, and the bottom of the sealing column 14 is fixedly connected to the rear side of the top wall of the tank body 11; support plates 18 are fixedly connected to the four corners of the bottom wall of the bottom plate 1, and universal wheels 19 are fixedly installed at the bottoms of the plurality of support plates 18;

[0041] Specifically, the sealing column 14 improves the sealing effect between the connector 10 and the tank body 11, and the support plates 18 and the universal wheels 19 facilitate the movement of the device.

[0042] Refer to Figure 1 and Figure 3 , the fixing mechanism 2 includes vertical plates 201. The bottom walls of the two vertical plates 201 are respectively fixedly connected to the front and rear sides of the top wall of the bottom plate 1. A hydraulic rod 202 is fixedly connected inside the vertical plate 201. The output end of the hydraulic rod 202 is fixedly connected to a connection shell 203. Sliding grooves 204 are opened at the left and right ends of the front side of the connection shell 203. Threaded knobs 205 are respectively threaded through the left and right ends of the front side of the connection shell 203. The rear end of the threaded knob 205 is threadedly connected to a clamping plate 206. One side of the clamping plate 206 is slidably connected to the inside of the connection shell 203;

[0043] Specifically, place the tank body 11 on the top of the bottom plate 1, providing a stable support surface for the tank body. By rotating the two threaded knobs 205, the clamping plate 206 can be controlled to slide inside the connection shell 203. The position of the clamping plate 206 can be adjusted through the sliding grooves 204, enabling the device to adapt to tanks of various sizes. Whether it is a large storage tank or a small container, it can be firmly fixed. By starting the hydraulic rod 202, multiple clamping plates 206 can be driven to move synchronously towards the center, ensuring the accuracy and stability of the clamping process. The clamping plates 206 gradually approach under the action of the hydraulic rod 202 and gradually surround the tank body 11, forming a stable encircling effect, and the stability of the tank body 11 during operation is significantly improved.

[0044] Refer to Figure 1 、 Figure 2 and Figure 3, a control switch 16 is fixedly connected to the front side of the compression fan 3. The control switch 16 is electrically connected to the compression fan 3 and the hydraulic rod 202 respectively. A waterproof cover 17 is arranged on the left side of the control switch 16. The rear side of the waterproof cover 17 is rotatably connected to the front side of the compression fan 3 through a hinge.

[0045] Specifically, through the control switch 16 electrically connected to the compression fan 3 and the hydraulic rod 202 respectively, the control switch 16 can complete the opening and closing of the device. Through the waterproof cover 17, it is convenient to carry out waterproof protection on the control switch 16. The compression fan 3 used in this utility model is the compression fan 9518 - 03S, the hydraulic rod 202 is the hydraulic rod GYCD - 110 / 750, and the control switch 16 is the control switch lw2. Since they are existing devices, they will not be elaborated in this case.

[0046] Refer to Figure 2 and Figure 3 , rubber rings 207 are fixedly connected to the middle parts of multiple threaded knobs 205, and rubber pads 208 are fixedly connected to the adjacent sides of multiple clamping plates 206. The right side of the top of the flow regulating valve 8 is fixedly connected with an indicating plate 12, and the left end of the top of the flow regulating valve 8 is fixedly connected with a rubber sleeve 13.

[0047] Specifically, through the rubber ring 207, the rotational damage of the threaded knob 205 to the connection shell 203 is reduced. Through the indicating plate 12, it is convenient to observe the passing rate of the regulating valve. Through the rubber sleeve 13, the anti - slip effect is improved.

[0048] Working principle: When starting to use, by starting the compression fan 3 and the adsorptive halogenated hydrocarbon cold trap device 4, air supply starts to the tank body 11. Then the gas with adsorption characteristics is transported through the delivery pipe 7 and the copper pipe 9. The bottom end of the copper pipe 9 contacts the blank water inside the tank body 11. Thus, air bubbles are generated in the tank body 11 to agitate the blank water. Since the transported gas is the gas that has absorbed halogenated hydrocarbons, the gas with adsorption characteristics synchronously adsorbs the halogenated hydrocarbons dissolved in the liquid in the tank, avoiding the situation that dichloromethane background dissolves in water and causes interference to the test samples.

[0049] By rotating two threaded knobs 205, the clamping plate 206 can slide inside the connection shell 203. Then, by rotating the threaded knob 205 again, the clamping plate 206 can be telescopically adjusted according to different specifications of the tank body 11 through the sliding groove 204. By starting the hydraulic rod 202, multiple clamping plates 204 move towards each other, thus achieving the fixing effect on the tank body 11 and improving the stability of the tank body 11 during operation.

[0050] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A volatile organic compound pretreatment improvement device, comprising a base plate (1), characterized in that: A compressor fan (3) is fixedly connected to the right side of the top wall of the bottom plate (1), a halogenated hydrocarbon adsorption cold trap device (4) is fixedly installed on the top of the compressor fan (3), control knobs (5) are rotatably installed on the left and right ends of the front side of the top wall of the compressor fan (3), and rubber strips (15) are fixedly connected to the outer walls of the two control knobs (5) at equal distances, a delivery valve (6) is connected to the rear side of the top wall of the compressor fan (3), the top end of the delivery valve (6) is connected to the delivery pipe (7), a flow regulating valve (8) is fixedly installed on the left end of the delivery pipe (7), a copper tube (9) is fixedly connected to the left end of the flow regulating valve (8), a connector (10) is fixedly connected to the bottom of the copper tube (9), and a tank body (11) is fixedly connected to the bottom wall of the connector (10), and a fixing mechanism (2) is provided on the front and rear sides of the bottom plate (1).

2. The volatile organic compound pretreatment improvement device according to claim 1, characterized in that: The fixing mechanism (2) comprises a vertical plate (201), the bottom walls of the two vertical plates (201) are respectively fixedly connected to the front and rear sides of the top wall of the bottom plate (1), a hydraulic rod (202) is fixedly connected inside the vertical plate (201), the output end of the hydraulic rod (202) is fixedly connected to a connecting shell (203), the left and right ends of the front side of the connecting shell (203) are both provided with sliding grooves (204), the left and right ends of the front side of the connecting shell (203) are both threadedly penetrated with threaded knobs (205), the rear end of the threaded knob (205) is threadedly connected to a clamping plate (206), and one side of the clamping plate (206) is slidably connected to the inside of the connecting shell (203).

3. The volatile organic compound pretreatment improvement device according to claim 2, characterized in that: A control switch (16) is fixedly connected to the front side of the compression fan (3), and the control switch (16) is electrically connected to the compression fan (3) and the hydraulic rod (202) respectively.

4. The volatile organic compound pretreatment improvement device according to claim 3, characterized in that: A waterproof cover (17) is provided on the left side of the control switch (16), and the rear side of the waterproof cover (17) is rotatably connected to the front side of the compressor fan (3) via a hinge.

5. The volatile organic compound pretreatment improvement device according to claim 2, characterized in that: The middle parts of the plurality of threaded knobs (205) are all fixedly connected to a rubber ring (207), and the adjacent sides of the plurality of clamping plates (206) are all fixedly connected to a rubber pad (208).

6. The improved device for pre-treatment of volatile organic compounds according to claim 1, characterized in that: An indicator plate (12) is fixedly connected to the right side of the top of the flow regulating valve (8), and a rubber sleeve (13) is fixedly connected to the left end of the top of the flow regulating valve (8).

7. The improved device for pre-treatment of volatile organic compounds according to claim 1, characterized in that: A sealing column (14) is fixedly mounted on the outer wall of the connector (10), and the bottom of the sealing column (14) is fixedly connected to the rear side of the top wall of the tank body (11).

8. The improved device for pre-treatment of volatile organic compounds according to claim 1, characterized in that: The four corners of the bottom wall of the bottom plate (1) are all fixedly connected to support plates (18), and universal wheels (19) are fixedly mounted on the bottoms of the plurality of support plates (18).

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