Soil sample screening device for soil remediation detection

Abstract

The utility model discloses a soil sample screening device for soil remediation detection, which comprises a soil screening machine seat, a vibration gasket is arranged at the upper part of the soil screening machine seat, a pair of guide rods are symmetrically arranged on two sides of the vibration gasket, and a plurality of screening sleeves are uniformly stacked on the vibration gasket from top to bottom; the utility model relates to the technical field of soil sample screening devices, in particular to a soil sample screening device for soil remediation detection, which is characterized in that a bottommost screen drum of a vibrating screen is modified, a special-shaped flow guide sleeve is used as an airflow channel to be communicated with an internal channel of a screening sleeve, and a suction component is used for generating negative pressure suction force, so that air carries soil samples with small particle sizes; the soil particles are discharged from the special-shaped flow guide sleeve and are collected by matching with the collection tank with a split structure, so that the suspension of the soil particles caused by vibration can be effectively inhibited, the collection of the small particle samples is more centralized, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil sample screening devices, in particular to a soil sample screening device for soil remediation detection. Background Art

[0002] During the soil remediation process, some target detection objects are present in low concentrations in small-particle soil and high concentrations in large-particle soil. If large-particle soil is discarded when selecting soil, the test results may be biased low. Therefore, the original soil matrix cannot be changed at will, but the large-particle soil must be crushed and ground.

[0003] The soil sample screening process mainly relies on the cooperation of vibration and screen to complete the screening. In order to effectively analyze the particle size composition in the soil, the current vibrating screens used for soil testing often adopt a multi-layer configuration. In the screening process, since the soil particles with the smallest particle size in the soil sample are very small, when they are subjected to the vibration force, they will be suspended in the soil screen and will not necessarily fall to the bottom layer, which will cause part of the soil sample to be missing, and the small particle sample will spill from the screen to generate dust, polluting the laboratory environment. In view of this, in-depth research was conducted on the above-mentioned problems, and this case was created. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a soil sample screening device for soil remediation detection, which solves the existing background technology problems.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a soil sample screening device for soil remediation detection, comprising a soil screening machine base, a vibrating washer is arranged on the upper part of the soil screening machine base, a pair of guide rods are symmetrically arranged on both sides of the vibrating washer, and a plurality of screening sleeves are evenly stacked on the vibrating washer from top to bottom;

[0006] Several screening sleeves are provided with screens of different mesh sizes, and the mesh sizes of the screens of several screening sleeves gradually increase from top to bottom;

[0007] A special-shaped guide sleeve is arranged in the bottom screening sleeve, the top of the special-shaped guide sleeve is a bucket-shaped structure, and the bottom of the special-shaped guide sleeve is an inclined tube-shaped structure;

[0008] The bottom end of the special-shaped guide sleeve penetrates the side wall of the screening sleeve, the bottom end of the special-shaped guide sleeve is connected to a material discharge interface, the open end of the material discharge interface is connected to a collection tank, the end of the collection tank is provided with a suction pipe, and the suction pipe is equipped with a suction assembly;

[0009] The collecting tank is a cylindrical cavity structure, and one end of the collecting tank connected to the suction pipe is provided with a guide port with a partial conical structure, and a filtering flannel is provided at the connection position between the collecting tank and the guide port.

[0010] Preferably, both ends of the collecting tank are threaded structures, and the collecting tank is connected to the feed interface and the guide port by threads.

[0011] Preferably, the special-shaped guide sleeve is connected to the screening sleeve by a plurality of screws.

[0012] Preferably, the upper and lower sides of the plurality of screening sleeves are mutually limited by a socket structure, and a top cover is buckled on the uppermost screening sleeve.

[0013] Preferably, a pair of guide rods are equipped with limit rods, and a pair of limit nuts are threadedly connected to the pair of guide rods and pressed on the limit rods.

[0014] Preferably, the suction assembly comprises a suction joint, the suction joint is connected to the suction pipe, and one side of the suction joint is connected to a suction air pump.

[0015] The utility model provides a soil sample screening device for soil remediation detection. It has the following beneficial effects: the soil sample screening device for soil remediation detection is modified to modify the bottom screen cylinder of the vibrating screen, and uses a special-shaped guide sleeve as an airflow channel to connect the internal channel of the screening sleeve, and uses a suction component to generate negative pressure suction, so that the air carries soil samples with tiny particle sizes, which are discharged from the special-shaped guide sleeve and collected in a collection tank with a split structure, which can effectively suppress the suspension of soil tiny particles caused by vibration, make the collection of tiny particle samples more concentrated, and improve the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a soil sample screening device for soil remediation detection according to the present invention.

[0017] Figure 2 It is a partial cross-sectional structural schematic diagram of a soil sample screening device for soil remediation detection described in the utility model.

[0018] Figure 3 The utility model is a schematic diagram of the partial blasting structure of a soil sample screening device for soil remediation detection.

[0019] Figure 4 It is a partial axonometric structural schematic diagram of a soil sample screening device for soil remediation detection described in the utility model.

[0020] In the figure: 1. soil screen base; 2. vibration washer; 3. guide rod; 4. screening sleeve; 5. special-shaped guide sleeve; 6. unloading interface; 7. collecting tank; 8. suction pipe; 9. diversion port; 10. top cover; 11. limit rod; 12. limit nut; 13. suction joint; 14. suction air pump. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 3 The utility model provides an implementation scheme: in modern soil remediation detection, in order to improve the accuracy of the detection results, the soil needs to be ground and screened. When the soil is screened, the fine particles in the ground soil sample are very easy to be suspended in the vibrating screen due to the vibration effect. Not only are they not easy to separate, but they also float in the multi-layer sieve buckets, resulting in incomplete separation of soil micro-components, affecting the detection results, and easily polluting the laboratory environment.

[0023] In view of the above problems, the present application discloses a soil sample screening device for soil remediation detection, wherein the supporting structure is a soil screen base 1, the soil screen base 1 adopts a cavity shell with a rectangular structure, at least a vibration motor and a controller are integrated in the soil screen base, and a vibration washer 2 is arranged on the upper part of the soil screen base 1, the vibration washer 2 is connected to the vibration end of the vibration motor, and is used for vibration transmission and positioning installation of the upper screening sleeve 4;

[0024] According to the instruction manual Figure 1-Figure 3 It can be known that, specifically, a plurality of screening sleeves 4 are evenly stacked from top to bottom on the vibration washer 2, and the screening from top to bottom is realized by stacking the screening sleeves 4. Screens with different mesh sizes are arranged in the plurality of screening sleeves 4, and the mesh sizes of the plurality of screening sleeves 4 gradually increase from top to bottom. As the mesh sizes of the screens increase, the mesh diameters of the screens become smaller as they go downward, so that the particle sizes of the screened soil particles become smaller as they go downward. A pair of guide rods 3 are symmetrically arranged on both sides of the vibration washer 2, and a limiting structure is added by the pair of guide rods 3 to play a limiting role in pressing the plurality of screening sleeves 4, so as to avoid the problem of the screening sleeves 4 being separated.

[0025] Further different from the prior art, a special-shaped guide sleeve 5 is arranged in the bottommost screening sleeve 4, the top of the special-shaped guide sleeve 5 is a bucket-shaped structure, the bottom of the special-shaped guide sleeve 5 is an inclined tube-shaped structure, the outer diameter of the bucket-shaped structure at the top of the special-shaped guide sleeve 5 matches the inner diameter of the screening sleeve 4, and the special-shaped guide sleeve 5 is connected to the screening sleeve 4. It should be noted that the bottom of the bottommost screening sleeve 4 should not have a screen, and the soil particles with the smallest particle size screened are discharged from the inclined tube-shaped structure at the bottom through the special-shaped guide sleeve 5 for separate collection;

[0026] In order to prevent fine dust from escaping between the screening sleeves 4, a collection tank 7 is connected through a feed interface 6 as a collection device, and a suction assembly on a suction pipe 8 is used to generate negative pressure suction, and then a special-shaped guide sleeve 5 is used to connect the inner cavities of multiple screening sleeves 4 to form a flow channel, so that the airflow carries soil particles of small particle size and settles downward through the mesh of the screen to prevent them from being suspended in the screening sleeve 4 due to vibration, and thus enter the special-shaped guide sleeve 5. It should be noted that the top cover 10 of the top screening sleeve 4 should have an air inlet hole;

[0027] Furthermore, the above-mentioned collecting tank 7 is a cylindrical cavity structure, and a guide port 9 with a partially conical structure is provided at one end of the collecting tank 7 connected to the suction tube 8, and a filter cloth is provided at the connecting position of the collecting tank 7 and the guide port 9. The collecting tank 7 and the guide port 9 and the connecting joint are connected in a split manner, so that the collecting tank 7 can be removed from between the two. On the one hand, this can facilitate the disassembly and replacement of the collecting tank 7, and by cleaning the filter cloth, all the obtained soil samples can be collected to improve the accuracy of the test results. On the other hand, the versatility of the parts is improved, and the collecting tank 7 and the filter cloth can be replaced in real time as consumables.

[0028] As a preferred solution, further, both ends of the collecting tank 7 are threaded structures, and the collecting tank 7 is threadedly connected to the discharge interface 6 and the guide port 9, so as to facilitate the removal and replacement of the collecting tank 7, extraction of samples and maintenance.

[0029] As a preferred solution, further, the special-shaped guide sleeve 5 is connected to the screening sleeve 4 by a plurality of screws to improve the stability of the connection.

[0030] As a preferred solution, further, the upper and lower sides of several screening sleeves 4 are limited to each other by using a socket structure, so as to improve the installation stability between the screening sleeves 4 and further improve the bonding when the screening sleeves 4 vibrate.

[0031] As a preferred solution, further, a pair of guide rods 3 are equipped with a limit rod 11, and a pair of limit nuts 12 are threadedly connected to the pair of guide rods 3 and pressed on the limit rod 11. The limit rod 11 has guide holes on both sides that match the guide rods 3. The limit rod 11 is pressed on the top cover 10 of the topmost screening sleeve 4 to play a limiting role. The height of the limit rod 11 is limited by the limit nut 12, which plays a limiting role on the top cover 10.

[0032] As a preferred solution, further, the suction component includes a suction joint 13, which is connected to the suction pipe 8. A suction air pump 14 is connected to one side of the suction joint 13. On the one hand, the suction head is connected to the suction pipe 8 to play a conductive role, and on the other hand, a control valve is provided thereon to play a switching role. By controlling the suction air pump 14, an air suction effect can be achieved, thereby playing a role in guiding and draining the soil sample.

[0033] From the above, it can be generally known that the soil sample screening device for soil remediation detection modifies the bottom sieve cylinder of the vibrating screen, uses the special-shaped guide sleeve 5 as an airflow channel to connect the internal channel of the screening sleeve 4, and uses the suction component to generate negative pressure suction, so that the air carries the soil sample with tiny particle size, which is discharged from the special-shaped guide sleeve 5 and collected in conjunction with the collection tank with a split structure. This can effectively suppress the suspension of tiny soil particles caused by vibration, make the collection of tiny particle samples more concentrated, and improve the accuracy of detection.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sample screening device for soil remediation detection, comprising a soil screening machine base (1), a vibrating washer (2) being arranged on the upper part of the soil screening machine base (1), a pair of guide rods (3) being symmetrically arranged on both sides of the vibrating washer (2), characterized in that: A plurality of screening sleeves (4) are evenly stacked on the vibration washer (2) from top to bottom; A plurality of the screening sleeves (4) are provided with screens of different mesh sizes, and the mesh sizes of the screens of the plurality of the screening sleeves (4) gradually increase from top to bottom; A special-shaped flow guide sleeve (5) is arranged in the bottommost screening sleeve (4), the top end of the special-shaped flow guide sleeve (5) is a bucket-shaped structure, and the bottom end of the special-shaped flow guide sleeve (5) is an inclined tube-shaped structure; The bottom end of the special-shaped guide sleeve (5) penetrates the side wall of the screening sleeve (4), the bottom end of the special-shaped guide sleeve (5) is connected to a material discharge interface (6), the open end of the material discharge interface (6) is connected to a collection tank (7), the end of the collection tank (7) is provided with a suction pipe (8), and the suction pipe (8) is equipped with a suction assembly; The collecting tank (7) is a cylindrical cavity structure, and one end of the collecting tank (7) connected to the suction pipe (8) is provided with a flow guide port (9) with a partially conical structure, and a filtering flannel is provided at the connection position between the collecting tank (7) and the flow guide port (9).

2. A soil sample screening device for soil remediation detection according to claim 1, characterized in that: Both ends of the collection tank (7) are threaded structures, and the collection tank (7) is connected to the feed interface (6) and the guide port (9) by threads.

3. A soil sample screening device for soil remediation detection according to claim 2, characterized in that: The special-shaped guide sleeve (5) is connected to the screening sleeve (4) via a plurality of screws.

4. A soil sample screening device for soil remediation detection according to claim 3, characterized in that: The upper and lower sides of the plurality of screening sleeves (4) are mutually limited by a socket structure, and a top cover (10) is buckled onto the topmost screening sleeve (4).

5. A soil sample screening device for soil remediation detection according to claim 4, characterized in that: A limit rod (11) is assembled on the pair of guide rods (3), and a pair of limit nuts (12) are threadedly connected to the pair of guide rods (3) and pressed onto the limit rods (11).

6. A soil sample screening device for soil remediation detection according to claim 5, characterized in that: The suction assembly comprises a suction joint (13), the suction joint (13) being connected to a suction pipe (8), and the open end of the suction joint (13) being connected to a suction air pump (14).

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