Equipment for detecting tetrahydrofuran substances in soil

Abstract

The utility model discloses equipment for detecting tetrahydrofuran substances in soil, which comprises a detection frame unit, a detection unit and a control unit, the detection frame unit comprises a collection box and a plurality of slots formed in the collection box, filter screens are embedded in the lower end walls of the slots, and sampling cylinders for completing soil sampling are inserted in the slots; the filter pressing unit comprises two supporting plates fixedly installed at the two ends of the upper side wall of the collecting box and a top plate fixedly installed at the upper ends of the two supporting plates, a telescopic air cylinder is fixedly installed at the center of the top plate, and the lower end of a piston rod of the telescopic air cylinder downwards penetrates through the top plate to be fixedly connected with a pressing plate; and the lower side wall of the pressing plate is fixedly connected with a plurality of groups of uniformly distributed pressing rods. According to the device disclosed by the utility model, a worker does not need to manually carry out filter pressing on soil samples in a plurality of sampling cylinders, so that the time for pretreatment before detection is saved, and the detection efficiency of the worker on tetrahydrofuran substances in the soil is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil detection, in particular to a device for detecting tetrahydrofuran in soil. Background Art

[0002] Tetrahydrofuran, also known as oxolane and 1,4-epoxybutane, is a heterocyclic organic compound with the chemical formula C4H8O. It belongs to ethers and is the fully hydrogenated product of furan. It is a colorless and transparent liquid, soluble in water, ethanol, ether, acetone, benzene, etc. It is mainly used as a solvent. On October 27, 2017, the World Health Organization's International Agency for Research on Cancer released a preliminary list of carcinogens for reference. Tetrahydrofuran is included in the list of Group 2B carcinogens. In real life, with the continuous progress and development of technology, before using the land, it is often necessary to detect the tetrahydrofuran in its soil.

[0003] In the prior art, during the detection of tetrahydrofuran in soil, it is necessary to manually insert the sampling cylinder into the soil to complete soil sampling in different areas or at different depths. After sampling, it is also necessary to manually press-filter and collect the tetrahydrofuran doped in the soil, and then detect these collected liquids. It takes a long time to press-filter and separate the tetrahydrofuran in the soil in each sampling cylinder, which affects the detection efficiency of the staff for the tetrahydrofuran in the soil. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] In view of the problems existing in the prior art of a device for detecting tetrahydrofuran in soil, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a device for detecting tetrahydrofuran in soil, which is suitable for solving the problem that it takes a long time to press-filter and separate the tetrahydrofuran in the soil in each sampling cylinder, affecting the detection efficiency of the staff for the tetrahydrofuran in the soil.

[0007] To solve the above technical problems, the present utility model provides the following technical solution: A device for detecting tetrahydrofuran in soil, comprising:

[0008] A detection frame unit, which includes a collection box and a plurality of slots opened on the collection box. The lower end wall of the slot is inlaid with a filter screen, and a sampling cylinder that has completed soil sampling is inserted into the slot;

[0009] A pressure filtration unit, which includes two support plates fixedly installed at both ends of the upper side wall of the collection box and a top plate fixedly installed at the upper ends of the two support plates. A telescopic cylinder is fixedly installed at the center of the top plate. The lower end of the piston rod of the telescopic cylinder penetrates downward through the top plate and is fixedly connected to a pressure plate. A plurality of uniformly distributed pressure rods are fixedly connected to the lower side wall of the pressure plate. The lower end of each pressure rod is fixedly connected to a pressure block matching the sampling cylinder. A matching drawer box is slidably installed on one side of the collection box, and a collection cylinder matching the plurality of sampling cylinders is inserted into the drawer box.

[0010] As a preferred solution of the detection device for tetrahydrofuran substances in soil of the present utility model, wherein: a corresponding docking ear is fixedly connected to the lower end of each support plate, and each docking ear and the collection box are fixedly connected by a plurality of fastening bolts symmetrically arranged in position.

[0011] As a preferred solution of the detection device for tetrahydrofuran substances in soil of the present utility model, wherein: symmetrically arranged guide rails are fixedly installed on the inner walls of both sides of the collection box, and guide sleeves matching the guide rails are fixedly installed on both sides of the drawer box.

[0012] As a preferred solution of the detection device for tetrahydrofuran substances in soil of the present utility model, wherein: a pull handle is fixedly installed at the outer end of the drawer box, and the pull handle is arranged in a U shape.

[0013] As a preferred solution of the detection device for tetrahydrofuran substances in soil of the present utility model, wherein: a through hole is formed in the support plate, and the support plate is made of austenitic stainless steel.

[0014] As a preferred solution of the detection device for tetrahydrofuran substances in soil of the present utility model, wherein: a plurality of uniformly distributed guiding telescopic rods are further fixedly connected between the lower side wall of the top plate and the upper side wall of the pressure plate.

[0015] The beneficial effects of the present utility model: The sampling cylinders that have completed soil collection are successively inserted upside down into the corresponding slots, and then the piston rod of the telescopic cylinder is controlled to push the pressure plate, a plurality of pressure rods and the pressure blocks to squeeze the soil in the sampling cylinders downward, so as to filter the liquid doped with tetrahydrofuran substances in the soil into the corresponding collection cylinders. After that, the drawer box is pulled to successively collect the sample liquids collected in the collection cylinders. There is no need for the staff to manually filter the soil samples in multiple sampling cylinders, saving the time spent on pre-treatment before detection, and thus improving the detection efficiency of the staff for tetrahydrofuran substances in soil. Description of the Drawings

[0016] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments. Obviously, the attached drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can be obtained based on these drawings. Among them:

[0017] Figure 1 It is a schematic diagram of the overall structure of a detection device for tetrahydrofuran in soil proposed by the present utility model;

[0018] Figure 2 It is a schematic diagram of the cooperation structure of the collection box, drawer box and collection cylinder of a detection device for tetrahydrofuran in soil proposed by the present utility model.

[0019] Description of the drawings: 100 detection frame unit, 101 collection box, 102 sampling cylinder, 103 slot, 104 filter screen, 200 pressure filtration unit, 201 support plate, 202 docking ear, 203 fastening bolt, 204 top plate, 205 telescopic cylinder, 206 pressing plate, 207 guiding telescopic rod, 208 pressing rod, 209 pressing block, 210 drawer box, 211 guiding sleeve, 212 collection cylinder. Detailed implementation manners

[0020] To make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present utility model in conjunction with the attached drawings of the specification.

[0021] Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0022] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is separate or selectively exclusive of other embodiments.

[0023] Furthermore, the present utility model is described in detail in conjunction with the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general ratio, and the schematic diagrams are only examples, which should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0024] Embodiment

[0025] Referring to Figure 1 - Figure 2 , which is an embodiment of the present utility model, a detection device for tetrahydrofuran in soil is provided, including: a detection frame unit 100 and a pressure filtration unit 200.

[0026] Among them, the detection frame unit 100 includes a collection box 101 and a plurality of slots 103 opened on the collection box 101. A filter screen 104 is inlaid and installed on the lower end wall of the slot 103, and a sampling cylinder 102 that has completed soil sampling is inserted into the slot 103;

[0027] Secondly, the pressure filtration unit 200 includes two support plates 201 fixedly installed at both ends of the upper side wall of the collection box 101 and a top plate 204 fixedly installed at the upper ends of the two support plates 201. A through hole is opened on the support plate 201, and the support plate 201 is made of austenitic stainless steel. The setting of the through hole saves the production materials of the support plate 201. The support plate 201 made of austenitic stainless steel can meet the requirements of its own strength and corrosion resistance. A telescopic cylinder 205 is fixedly installed at the center of the top plate 204. The lower end of the piston rod of the telescopic cylinder 205 penetrates downward through the top plate 204 and is fixedly connected to a pressing plate 206. A plurality of groups of uniformly distributed guiding telescopic rods 207 are also fixedly connected between the lower side wall of the top plate 204 and the upper side wall of the pressing plate 206. The setting of the guiding telescopic rods 207 improves the connection stability between the top plate 204 and the pressing plate 206. A plurality of groups of uniformly distributed pressing rods 208 are fixedly connected to the lower side wall of the pressing plate 206. A pressing block 209 matching the sampling cylinder 102 is fixedly connected to the lower end of each pressing rod 208. A matching drawer box 210 is slidably installed on one side of the collection box 101. Guide rails are fixedly installed on both inner walls of the two sides of the collection box 101, and guide sleeves 211 matching the guide rails are fixedly installed on both sides of the drawer box 210. Through the setting of the guide rails and the guide sleeves 211, the connection between the drawer box 210 and the collection box 101 can be guided. A collection cylinder 212 matching a plurality of sampling cylinders 102 is inserted into the drawer box 210. A pull handle is fixedly installed at the outer end of the drawer box 210. The pull handle is set in a U shape. The setting of the pull handle facilitates the staff to pull out the drawer box 210. In the present utility model, the tetrahydrofuran in the soil can be detected by mass spectrometry and chromatography, which belongs to very mature existing technologies. Therefore, the working principle thereof will not be introduced in detail here.

[0028] A corresponding docking ear 202 is fixedly connected to the lower end of each support plate 201. Each docking ear 202 and the collection box 101 are tightly connected by a plurality of symmetrically arranged fastening bolts 203. By the combined use of the docking ear 202 and the fastening bolts 203, the support plate 201, the pressing plate 206 and a plurality of pressing blocks 209 can be detached from the collection box 210 as a whole, which is convenient for the disassembly and carrying of the detection device.

[0029] During use, the sampling cylinder 102 that has completed soil collection is successively inserted upside down into the corresponding slots 103, and then the piston rod of the telescopic cylinder 205 is controlled to push the pressing plate 206, multiple pressing rods 208 and pressing blocks 209 to squeeze the soil in the sampling cylinder 102 downward, filtering the liquid doped with tetrahydrofuran in the soil into the corresponding collection cylinder 212. After that, the drawer box 210 is pulled to collect the sample liquid collected in the collection cylinder 212 in sequence. There is no need for the staff to manually filter the soil samples in multiple sampling cylinders 102, saving the time spent on pre-treatment before detection, and thus improving the detection efficiency of the staff for tetrahydrofuran in the soil.

[0030] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A device for detecting tetrahydrofuran in soil, characterized in that: include: A detection frame unit (100) comprises a collection box (101) and a plurality of slots (103) provided on the collection box (101), wherein a filter screen (104) is embedded and installed on the lower end wall of the slot (103), and a sampling cylinder (102) for completing soil sampling is inserted in the slot (103); The filter press unit (200) comprises two support plates (201) fixedly mounted at both ends of the upper side wall of a collection box (101) and a top plate (204) fixedly mounted at the upper ends of the two support plates (201); a telescopic cylinder (205) is fixedly mounted at the center of the top plate (204); the lower end of the piston rod of the telescopic cylinder (205) penetrates downward through the top plate (204) and is fixedly connected to a pressure plate (206); a plurality of groups of uniformly distributed pressure rods (208) are fixedly connected to the lower side wall of the pressure plate (206); the lower end of each pressure rod (208) is fixedly connected to a pressure block (209) matching a sampling tube (102); a matching drawer box (210) is slidably mounted on one side of the collection box (101); a collection tube (212) matching a plurality of groups of sampling tubes (102) is inserted into the drawer box (210).

2. The device for detecting tetrahydrofuran in soil according to claim 1, characterized in that: The lower end of each support plate (201) is fixedly connected to a corresponding docking ear (202), and each docking ear (202) is fastened to the collection box (101) via a plurality of symmetrically positioned fastening bolts (203).

3. The device for detecting tetrahydrofuran in soil according to claim 1, characterized in that: The inner walls on both sides of the collection box (101) are fixedly mounted with guide rails in symmetrical positions, and the two sides of the drawer box (210) are fixedly mounted with guide sleeves (211) matching the guide rails.

4. The device for detecting tetrahydrofuran in soil according to claim 1, characterized in that: A pull handle is fixedly mounted on the outer end of the drawer box (210), and the pull handle is arranged in a U shape.

5. The device for detecting tetrahydrofuran in soil according to claim 1, characterized in that: The support plate (201) is provided with a through opening, and the support plate (201) is made of austenitic stainless steel.

6. The device for detecting tetrahydrofuran in soil according to claim 1, characterized in that: A plurality of groups of evenly distributed guiding telescopic rods (207) are also fixedly connected between the lower side wall of the top plate (204) and the upper side wall of the pressing plate (206).

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