Environment detection sampling device

Abstract

The utility model belongs to the field of sampling devices, and discloses an environment detection sampling device which comprises a collecting barrel, a sinking groove is formed in the bottom of the collecting barrel, and a one-way ventilation valve is installed on the inner side of the collecting barrel; the sampling barrel is inserted into the sinking groove in a threaded mode, and a sampling opening is formed in the bottom of the sampling barrel; the sealing mechanism comprises a connecting frame, a sealing bolt, a tension spring and a sealing block, the connecting frame is in a U shape and is fixed to the bottom of the sampling barrel, the sealing bolt is inserted into the bottom of the connecting frame in a threaded mode, the end of the sealing bolt extends to the inner side of the connecting frame, one end of the tension spring is rotationally connected with the end of the sealing bolt, and the other end of the tension spring is connected with the sealing block; the sealing block abuts against the bottom of the inner side of the sampling barrel and seals the sampling opening. The sampling barrel can be sealed through the sealing mechanism when the sampling barrel does not reach the specified depth and is opened after the sampling barrel reaches the specified depth, so that the collecting barrel and the sampling barrel can accurately sample a water area, and the accuracy of a subsequent detection result is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sampling devices, and in particular relates to an environment detection sampling device. Background Art

[0002] In order to accurately judge the environmental quality and to better develop, utilize and manage the environment, it is necessary to collect and analyze samples of the environment to obtain accurate environmental quality data. Among them, the collection of water samples is an important step in analyzing water environment quality data.

[0003] The Chinese patent with publication number CN220690570U discloses an environmental pollution source water quality sampler, including a connecting tube, a sampling tube and a driving member; the connecting tube is provided with a mounting hole matching the sampling tube, and the sampling tube can be detachably mounted in the mounting hole; the sampling tube includes an absorbent part and a telescopic part connected to each other, the telescopic part forms a negative pressure after compression and collects the pollution source water sample through the absorbent part; the driving member is installed at the end of the connecting tube away from the sampling tube, and the driving member forms a negative pressure environment by squeezing the telescopic part. This solution compresses and releases the telescopic part of the sampling tube through the driving member, and can use the rebound of the sampling tube to quickly absorb the pollution source water sample, thereby realizing the rapid collection of the pollution source water sample. In addition, the sampling tube can be quickly disassembled, which is convenient for collecting the pollution source water sample, and has the characteristics of simple structure and convenient operation.

[0004] However, in actual use, although the telescopic part is in a compressed state under the pressure of the driving part and is unable to absorb water, the suction part cannot be folded and compressed, resulting in a cavity containing air inside. When the suction part enters the water source, part of the air in the cavity will merge into the water, and under the action of water pressure, the remaining air will be compressed to a certain volume, that is, the volume occupied by the air in the cavity will be reduced, and the water sample in the water source can enter the suction part in advance, resulting in water sources of different depths mixed into the interior of the suction part before the suction part reaches the specified sampling depth, resulting in inaccurate water sample results in the final sampling. Utility Model Content

[0005] The utility model aims to provide an environment detection sampling device to solve the problem of inaccurate sampling results of the existing sampling devices mentioned above.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an environmental detection sampling device, comprising

[0007] The collecting cylinder has a sink at the bottom and a one-way air valve connected to the outside installed inside the collecting cylinder;

[0008] The sampling tube is threadedly inserted into the sink, and the sampling tube is connected to the collecting tube, and the bottom of the sampling tube is provided with a sampling port;

[0009] The sealing mechanism includes a connecting frame, a sealing bolt, a tension spring and a sealing block. The connecting frame is U-shaped and fixed to the bottom of the sampling tube. The sealing bolt is threadedly inserted into the bottom of the connecting frame, and the end of the sealing bolt extends to the inner side of the connecting frame. One end of the tension spring is rotatably connected to the end of the sealing bolt, and the other end of the tension spring is connected to the sealing block. The sealing block abuts against the bottom of the inner side of the sampling tube and seals the sampling port.

[0010] The principle and effect of this technical solution:

[0011] 1. The sampling tube is threadedly inserted into the sink of the collecting tube, so that the sampling tube and the collecting tube are detachable, thereby facilitating the removal of the water sample in the collecting tube and the internal cleaning of the collecting tube and the sampling tube. Through the setting of the one-way air valve, the internal air pressure of the collecting tube and the sampling tube when they are sealed will not interfere with the water pressure to push open the sealing mechanism and enter the inside of the sampling tube and the collecting tube (when the sealing mechanism reaches the specified depth, the combined force of the water pressure and the buoyancy of the sealing block exceeds the preset tension of the tension spring. At this time, if there is no one-way air valve, the air pressure inside the sampling barrel and the collecting tube will produce resistance to the sealing plate leaving the sampling port. Through the setting of the one-way air valve, the air inside is subjected to the top pressure and will flow out through the one-way air valve, thereby balancing the internal air pressure).

[0012] 2. By setting the connecting frame, sealing bolts, tension springs and sealing blocks, the initial length of the tension spring can be adjusted according to the minimum spacing of the sealing bolts relative to the sampling tube. By adjusting the initial length of the tension spring, the sealing block can be subjected to different initial tensions, thereby adapting to the sealing block leaving the sampling port at different water depths (when the water pressure is greater than the tension exerted on the sealing block, the sealing block leaves the sampling port, and after the water flows into the sampling tube, the sealing block is also subjected to the buoyancy of the water, thereby allowing the water source to continue to enter the sampling tube).

[0013] 3. The initial tension can be conditioned by controlling the sealing bolt, so that when the sampling tube does not reach the specified depth, the water pressure is less than the tension of the tension spring, and the water source cannot enter the sampling tube, thereby improving the sample accuracy of the collection tube and the sampling tube during sampling, and directly improving the accuracy of the final sampling result.

[0014] The utility model is further configured as follows: the sealing mechanism also includes a guide unit, the guide unit includes a guide rod and a limit block, the guide rod is fixed to the bottom of the inner side of the sampling tube, the sealing block is slidably mounted on the guide rod, and the limit block is fixed to the top of the guide rod.

[0015] The principle and effect of this technical solution: the movement of the sealing block is guided by the guide rod, which avoids the sealing block from being offset after leaving the bottom of the inner side of the sampling tube due to the free amount of the tension spring. After the sampling tube completes sampling and the depth rises, the sealing block can be accurately reset under the action of the tension of the tension spring, thereby sealing the sampling port. The setting of the limit block avoids the situation where the sealing block is separated from the guide rod.

[0016] The utility model is further configured as follows: the sealing block is in a boss shape, the outer diameter of the bottom edge of the sealing block is smaller than the outer diameter of the top edge of the sealing block, and the lower end of the sealing block is slidably inserted into the sampling port.

[0017] The principle and effect of the technical solution: the boss-shaped setting enables the sealing block to better seal and shield the sampling port, thereby making the sampling accuracy of the sampling tube more precise.

[0018] The utility model is further configured as follows: a threaded protrusion is provided on the top of the collecting cylinder, and the threaded protrusion is matched with the sink.

[0019] The principle and effect of the technical solution: The matching setting of the threaded protrusion and the sink allows the device to be connected to the end of the sink through the threaded protrusion between multiple collecting tubes, thereby extending the length of the collecting tube, so that the device can sample water sources in deeper areas.

[0020] The utility model is further configured as follows: it also includes an auxiliary sampling mechanism, the auxiliary sampling mechanism includes a screw cap, a screw rod, a control plate and a stopper, one end of the screw rod is connected to the control plate, the other end of the screw rod is connected to the stopper, the screw cap is threadedly sleeved on the screw rod, and the screw cap is detachably installed on the top of the threaded protrusion, the control plate is slidably fitted in the collection barrel, and the inner wall of the collection barrel has a limiting protrusion, the control plate is provided with a limiting groove, the limiting groove is adapted to the limiting protrusion, and the one-way air valve is installed on the control plate.

[0021] The principle and effect of the technical solution: by setting the limiting protrusion and the limiting groove, the control board can only slide relative to the inner side of the collecting tube but cannot rotate, and then by turning the screw cap, the screw cap can drive the screw rod to rise or fall, thereby controlling the accommodating space from the bottom of the control board to the bottom of the inner side of the sampling tube, and by controlling the size of the accommodating space, the final sampling volume can be controlled, that is, the purpose of quantitative sampling can be achieved, avoiding the waste of environmental resources, and the setting of the one-way air valve allows the air between the bottom of the control board and the bottom of the inner side of the sampling tube to flow to the control board through the one-way control valve, and then be discharged through the gap between the sampling tube and the screw cap, so that the atmosphere inside will not hinder the entry of water.

[0022] The utility model is further configured as follows: the auxiliary sampling mechanism also includes a connecting tube, a connecting ring, a connecting rod and a connecting nut. The connecting ring is fixedly mounted on the top of the outer wall of the collecting tube. The outer shape of the connecting tube is a boss shape, and the outer diameter of the top edge of the connecting tube is larger than the outer diameter of the bottom edge of the connecting tube. The connecting tube is mounted on the threaded protrusion, and the bottom of the connecting tube abuts against the top of the collecting tube. The screw cap is rotatably installed on the top of the inner side of the connecting tube. One end of the connecting rod is connected to the connecting tube, and the other end of the connecting rod passes through the connecting ring. The connecting nut is threadedly mounted on the connecting rod, and the top of the connecting nut abuts against the connecting ring.

[0023] The principle and effect of this technical solution: by setting the connecting rod and the connecting nut, the connecting tube and the screw cap are detachable relative to the collecting tube, so that the device can be controlled according to needs. For example, when cleaning, the screw cap can be removed to drive the screw and the control plate to leave the collecting tube, thereby facilitating the cleaning of the inside of the collecting tube. At the same time, when multiple collecting tubes need to be connected and assembled, the detachable setting avoids the interference of the connecting tube on the assembly of the collecting tube.

[0024] The utility model is further configured as follows: a plurality of handles are arranged at intervals along the circumferential direction on the top of the screw cap.

[0025] The principle and effect of the technical solution: The setting of the handle enables the sampler to turn the screw cap more easily, thereby controlling the rise and fall of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the front view of the utility model;

[0027] Figure 2 for Figure 1 Cross-sectional structural diagram;

[0028] Figure 3 for Figure 1 Structural diagram of the middle connecting frame;

[0029] Figure 4 for Figure 1 Structural diagram of the middle connecting tube;

[0030] Figure 5 for Figure 4 Bottom view of the middle connecting tube;

[0031] Figure 6 for Figure 2 Top view of the center control panel. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples:

[0033] The figure marks in the drawings of the specification include: 101, collecting tube; 102, sink groove; 103, threaded protrusion; 104, limiting protrusion; 105, one-way air valve; 201, sampling tube; 202, sampling port; 301, connecting frame; 302, sealing bolt; 303, tension spring; 304, sealing block; 305, guide rod; 306, limiting block; 401, screw cap; 402, handle; 403, screw rod; 404, stopper; 405, control panel; 406, limiting groove; 501, connecting tube; 502, connecting ring; 503, connecting rod; 504, connecting nut.

[0034] As attached Figure 1-6 As shown, the utility model discloses an environmental detection sampling device, including a collecting tube 101, a sampling tube 201, a sealing mechanism and an auxiliary sampling mechanism.

[0035] The bottom of the collecting tube 101 is provided with a sinking groove 102, the top of the collecting tube 101 is provided with a threaded protrusion 103, the threaded protrusion 103 is adapted to the sinking groove 102, and the inner wall of the collecting tube 101 is provided with a limiting protrusion 104. Multiple collecting tubes 101 can be connected by screwing the head and tail threads together, thereby extending the length of the device.

[0036] The sampling barrel 201 is threadedly inserted into the trough 102, and the sampling barrel 201 is connected to the collecting barrel 101. The bottom of the sampling barrel 201 has a sampling port 202, and the outer wall of the sampling barrel 201 has a raised limiting step, which can better seal the connection between the trough 102 and the sampling barrel 201, and also facilitate the disassembly of the sampling barrel 201 relative to the collecting barrel 101, and at the same time facilitate the control of the overlap of the sampling barrel 201 relative to the trough 102.

[0037] The sealing mechanism includes a connecting frame 301, a sealing bolt 302, a tension spring 303, a sealing block 304 and a guide unit. The connecting frame 301 is U-shaped and fixed to the bottom of the sampling tube 201. The sealing bolt 302 is threadedly inserted into the bottom of the connecting frame 301, and the end of the sealing bolt 302 extends to the inner side of the connecting frame 301. One end of the tension spring 303 is rotatably connected to the end of the sealing bolt 302 (a rotating head is provided at the end of the sealing bolt 302, the rotating head is fixed to the tension spring 303, and the rotating head is rotatably connected to the sealing bolt 302. By rotating the rotating head, the tension spring 303 will not be affected by the sealing bolt 302. The rotation is subjected to torsional force, thereby avoiding rigid fatigue of the tension spring 303 and increasing the service life of the tension spring 303). The other end of the tension spring 303 passes through the sampling port 202 and is connected to the sealing block 304. The guide unit includes a guide rod 305 and a limit block 306. The guide rod 305 is fixed to the bottom of the inner side of the sampling tube 201. The sealing block 304 is slidably mounted on the guide rod 305. The limit block 306 is fixed to the top of the guide rod 305. The sealing block 304 has a boss shape, and the outer diameter of the bottom edge of the sealing block 304 is smaller than the outer diameter of the top edge of the sealing block 304. The lower end of the sealing block 304 is slidably inserted into the sampling port 202.

[0038] The auxiliary sampling mechanism includes a screw cap 401, a screw rod 403, a control board 405, a stopper 404, a connecting tube 501, a connecting ring 502, a connecting rod 503 and a connecting nut 504. One end of the screw rod 403 is connected to the control board 405, and the other end of the screw rod 403 is connected to the stopper 404. The screw cap 401 is threadedly sleeved on the screw rod 403. The control board 405 is slidably matched in the collection tube 101. The control board 405 is provided with a limiting groove 406, and the limiting groove 406 is adapted to the limiting protrusion 104. The one-way air permeable valve 105 is installed on the control board 405. The connecting ring 502 is sleeved and fixed to the top of the outer wall of the collection tube 101. The outer shape of the connecting tube 501 is a boss shape, and the outer diameter of the top edge of the connecting tube 501 is larger than the outer diameter of the bottom edge of the connecting tube 501. The connecting tube 501 is mounted on the threaded protrusion 103, and the bottom of the connecting tube 501 is abutted against the top of the collecting tube 101. The screw cap 401 is rotatably installed on the top of the inner side of the connecting tube 501. One end of the connecting rod 503 is connected to the connecting tube 501, and the other end of the connecting rod 503 passes through the connecting ring 502. The connecting nut 504 is threadedly mounted on the connecting rod 503, and the top of the connecting nut 504 is abutted against the connecting ring 502. A plurality of handles 402 are arranged at intervals along the circumferential direction on the top of the screw cap 401.

[0039] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical scheme or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the technical scheme of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An environmental detection sampling device, characterized in that: include The collecting cylinder has a sink at the bottom and a one-way air-permeable valve connected to the outside installed inside the collecting cylinder; A sampling cylinder is threadedly inserted into the sink, and the sampling cylinder is connected to the collecting cylinder, and the bottom of the sampling cylinder is provided with a sampling port; The sealing mechanism includes a connecting frame, a sealing bolt, a tension spring and a sealing block. The connecting frame is U-shaped and fixed to the bottom of the sampling barrel. The sealing bolt is threadedly inserted into the bottom of the connecting frame, and the end of the sealing bolt extends to the inner side of the connecting frame. One end of the tension spring is rotatably connected to the end of the sealing bolt, and the other end of the tension spring is connected to the sealing block. The sealing block abuts against the bottom of the inner side of the sampling barrel and seals the sampling port.

2. An environmental detection sampling device as claimed in claim 1, characterized in that: The sealing mechanism also includes a guide unit, which includes a guide rod and a limit block. The guide rod is fixed to the bottom of the inner side of the sampling tube, the sealing block is slidably mounted on the guide rod, and the limit block is fixed to the top of the guide rod.

3. An environmental detection sampling device as claimed in claim 2, characterized in that: The sealing block has a boss shape, and the outer diameter of the bottom edge of the sealing block is smaller than the outer diameter of the top edge of the sealing block. The lower end of the sealing block is slidably inserted into the sampling port.

4. An environmental detection sampling device as claimed in claim 1, characterized in that: The top of the collecting cylinder is provided with a threaded protrusion, and the threaded protrusion is matched with the sink.

5. An environmental detection sampling device as claimed in claim 4, characterized in that: It also includes an auxiliary sampling mechanism, which includes a screw cap, a screw, a control plate and a stopper, one end of the screw is connected to the control plate, the other end of the screw is connected to the stopper, the screw cap is threadedly mounted on the screw, and the screw cap is detachably mounted on the top of the threaded protrusion, the control plate is slidably fitted in the collection tube, and the inner wall of the collection tube has a limiting protrusion, the control plate is provided with a limiting groove, the limiting groove is adapted to the limiting protrusion, and the one-way air valve is mounted on the control plate.

6. An environmental detection sampling device as claimed in claim 5, characterized in that: The auxiliary sampling mechanism also includes a connecting tube, a connecting ring, a connecting rod and a connecting nut. The connecting ring is fixedly mounted on the top of the outer wall of the collecting tube. The connecting tube has a boss shape, and the outer diameter of the top edge of the connecting tube is larger than the outer diameter of the bottom edge of the connecting tube. The connecting tube is mounted on the threaded protrusion, and the bottom of the connecting tube abuts against the top of the collecting tube. The screw cap is rotatably installed on the top of the inner side of the connecting tube. One end of the connecting rod is connected to the connecting tube, and the other end of the connecting rod passes through the connecting ring. The connecting nut is threadedly mounted on the connecting rod, and the top of the connecting nut abuts against the connecting ring.

7. An environmental detection sampling device as claimed in claim 6, characterized in that: A plurality of handles are arranged at intervals along the circumferential direction on the top of the screw cap.

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