A groundwater sampling device

Abstract

The utility model discloses an underground water sampling acquisition device relates to underground water sampling field, including control mechanism, a plurality of sampling mechanism and open and close mechanism, counterweight, and sampling mechanism includes sampling bin, and the fixed edge pipe is fixed in sampling bin, and the fixed edge pipe is slidably connected with the floating assembly, and the floating assembly one side is provided with open and close valve subassembly, and the floating assembly is fixed with the limit ring table, and the open and close mechanism includes the limit bin, and the limit bin is slidably connected with a plurality of limit clamping hands, and the limit clamping hand is fixed with the spring between the limit bin, and the limit bin middle slide is connected with the metal lifting ring, and the metal lifting ring is hinged with connecting rod between a plurality of limit clamping hands. Advantageous effects lie in: through the cooperation of sampling mechanism and open and close mechanism, realize the limit of floating assembly and close open and close valve subassembly, need to take water sample, and the floating assembly is separated from the limit, and the open and close valve opens, and then re -automatic closing when the water reaches the predetermined amount, and this can avoid the cross -contamination of water sample.

Description

Technical Field

[0001] This utility model relates to the field of groundwater sampling, and in particular to a groundwater sampling and acquisition device. Background Technology

[0002] Environmental emergency monitoring (groundwater) refers to targeted monitoring and analysis activities carried out after a sudden groundwater pollution incident (such as leakage, illegal discharge, accidental spill, etc.) to quickly grasp the scope of pollution, types and concentrations of pollutants, diffusion trends and potential risks. In groundwater emergency monitoring, the selection of sampling devices should prioritize requirements such as rapid response, portability, anti-interference and pollutant stability to cope with the complex on-site environment in sudden pollution incidents.

[0003] For example, patent document CN214503025U discloses an environmental emergency monitoring groundwater sampling and acquisition device, including a base, a sample tube fixedly connected to the top of the base, an observation glass with graduation lines on the front of the sample tube, a collection mechanism on the outer wall of the sample tube, and a movably mounted filter mechanism on the inner wall of the sample tube. The filter mechanism includes a frame, and an air bladder is fitted onto the outer wall of the frame. This device, through the use of a filter sponge and a filter screen within the filter mechanism, can effectively filter the groundwater pumped in by the water pump. Compared with traditional environmental emergency monitoring groundwater sampling and acquisition devices, it eliminates many unnecessary hassles during use, eliminating the need for filtering impurities from each sample after sampling, thus improving the efficiency of groundwater detection.

[0004] In existing technologies, when sampling groundwater in emergency monitoring scenarios, a multi-chamber combined sampling structure is often adopted to meet the needs of rapid response and multi-depth sampling. Therefore, how to ensure that groundwater samples from multiple layers are free from cross-contamination and obtain sufficient sample volume during sampling is a practical problem that urgently needs to be solved. Utility Model Content

[0005] The purpose of this invention is to provide a groundwater sampling and acquisition device to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A groundwater sampling and acquisition device includes several sampling mechanisms. Each sampling mechanism has an opening and closing mechanism at its top, a control mechanism at the top of the uppermost opening and closing mechanism, and a counterweight at the bottom of the lowermost sampling mechanism. Each sampling mechanism includes a sampling chamber, with a fixed prism tube fixedly connected in the middle. A floating component is slidably connected to the fixed prism tube, and an opening and closing valve assembly is located on one side of the floating component. A limiting ring platform is fixedly connected to the top of the floating component, with its outer edge sloped. The opening and closing mechanism includes a limiting chamber fixedly connected to the top of the sampling chamber. Several circumferentially evenly arranged limiting grippers are slidably connected inside the limiting chamber, with their lower inner ends sloped. The limiting grippers can cooperate with the limiting ring platform for limiting. A spring is fixedly connected between the limiting grippers and the limiting chamber. A plastic vertical tube is fixedly connected in the middle of the limiting chamber, with a metal lifting ring slidably connected to the plastic vertical tube. A connecting rod is hinged between the metal lifting ring and the several limiting grippers.

[0008] Preferably, the opening and closing valve assembly includes a water inlet pipe fixedly connected to one side of the sampling chamber, the water inlet pipe being L-shaped, and a closing valve head fixedly connected to one side of the floating assembly, the closing valve head being L-shaped, the upper end of the closing valve head being able to cooperate with the upper end of the water inlet pipe to close.

[0009] Preferably, the sampling mechanism further includes a second threaded ring fixedly connected to the bottom of the sampling chamber. The second threaded ring can be threadedly connected to the counterweight. The bottom of the sampling chamber is set as an inclined surface. A water tap is threadedly sealed on one side of the sampling chamber. The sampling chamber is made of rigid transparent plastic material.

[0010] Preferably, a limiting cover is fixedly connected to the top of the limiting chamber, and a threaded concave ring is provided on the limiting cover, which can be threadedly connected to a second threaded ring.

[0011] Preferably, the control mechanism includes a control compartment, with an upper cover fixedly connected to the top of the control compartment. A sling is hinged to the top of the upper cover via a U-shaped ring, and a traction device is connected to the outside of the sling. A first threaded ring is fixedly connected to the bottom of the control compartment, and the first threaded ring can be threadedly connected to a threaded concave ring on the limiting upper cover. An opening and closing rope winding assembly is fixedly connected inside the control compartment, and a winding motor is fixedly connected inside the control compartment. The output end of the winding motor is fixedly connected to a rotating shaft inside the opening and closing rope winding assembly. An opening and closing traction rope is wound on the opening and closing rope winding assembly, and a permanent magnet is threadedly connected to the other end of the opening and closing traction rope. The permanent magnet can attract the metal lifting ring to move.

[0012] Preferably, the control chamber is sealed and divided into two areas by a partition plate. The opening and closing rope winding assembly and the winding motor are placed in the same area. The other area inside the control chamber is fixedly connected to a depth rope winding assembly. A depth traction rope is wound on the depth rope winding assembly. A float is fixedly connected to the other end of the depth traction rope. Several reversing wheel sets are fixedly connected inside the control chamber. A counter is fixedly connected to the other area inside the control chamber. The counter is electrically connected to the winding motor. The depth traction rope is wound on the input end of the counter through the action of the reversing wheel sets and finally extends out of the upper cover.

[0013] The beneficial effects are:

[0014] 1. By coordinating the sampling mechanism and the opening and closing mechanism, the floating component is limited to the upper end of the sampling chamber and the opening and closing valve assembly is closed. When water samples need to be taken, the floating component is released from the limit, the opening and closing valve is opened, and then it automatically closes again when the water volume reaches the predetermined amount. This ensures that water in non-target water layers cannot enter the sampling chamber, thereby avoiding cross-contamination of water samples.

[0015] 2. By setting up the control mechanism, using the buoyancy of the float for positioning and the distance judgment of the counter, the information of where the device is located underwater can be obtained. Based on this information, the winding motor is driven by an electrical signal to work. The winding motor pulls the permanent magnet up, causing multiple sampling mechanisms to be opened in sequence, thereby realizing the function of automatically sampling after reaching the predetermined position.

[0016] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a perspective view of a groundwater sampling and acquisition device according to the present invention;

[0019] Figure 2 This is a left sectional view of the groundwater sampling and acquisition device described in this utility model;

[0020] Figure 3 This is a perspective view showing the relative positions of the control mechanism and the opening / closing mechanism of the groundwater sampling and acquisition device described in this utility model.

[0021] Figure 4 This is a three-dimensional structural view of the control mechanism of the groundwater sampling and acquisition device described in this utility model;

[0022] Figure 5 This is a perspective view showing the relative positions of the sampling mechanism and the opening / closing mechanism of the groundwater sampling and acquisition device described in this utility model.

[0023] Figure 6 This is a three-dimensional structural view of the sampling mechanism of the groundwater sampling and acquisition device described in this utility model;

[0024] Figure 7 This is a three-dimensional structural view of the opening and closing mechanism of the groundwater sampling and acquisition device described in this utility model;

[0025] Figure 8 yes Figure 2 Enlarged view of point A in the middle.

[0026] The annotations in the attached figures are explained as follows:

[0027] 101. Control chamber; 102. Top cover; 103. Sling; 104. Float; 105. Depth traction rope; 106. Depth rope winding assembly; 107. Directional pulley assembly; 108. Counter; 109. Opening and closing rope winding assembly; 110. Winding motor; 111. Opening and closing traction rope; 112. Permanent magnet; 113. First threaded ring; 201. Sampling chamber; 202. Second threaded ring; 203. Fixed prism tube; 204. Floating assembly; 205. Sealing valve head; 206. Water inlet pipe; 207. Limiting ring platform; 208. Water intake plug; 301. Limiting chamber; 302. Limiting top cover; 303. Plastic vertical tube; 304. Metal lifting ring; 305. Limiting gripper; 306. Connecting rod; 307. Spring; 4. Counterweight. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] like Figures 1-8As shown, a groundwater sampling and acquisition device includes several sampling mechanisms. Each sampling mechanism has an opening and closing mechanism at its top, a control mechanism at the top of the uppermost opening and closing mechanism, and a counterweight 4 at the bottom of the lowermost sampling mechanism. Each sampling mechanism includes a sampling chamber 201, with a fixed prism tube 203 fixedly connected in the middle of the chamber. A floating assembly 204 is slidably connected to the fixed prism tube 203. An opening and closing valve assembly is located on one side of the floating assembly 204. A limiting ring platform 207 is fixedly connected to the top of the floating assembly 204, and a limiting ring platform 207 has a [missing information - likely a design feature or design feature]. The opening and closing mechanism includes a limiting chamber 301 bolted and sealed to the top of the sampling chamber 201. Several circumferentially evenly arranged limiting grips 305 are slidably connected inside the limiting chamber 301. The lower inner side of each limiting grip 305 is set as an incline, allowing it to engage with a limiting ring platform 207 for limiting. A spring 307 is fixedly connected between the limiting grips 305 and the limiting chamber 301. A plastic vertical tube 303 is fixedly connected to the middle of the limiting chamber 301, and a metal lifting ring 304 is slidably connected to the plastic vertical tube 303. A connecting rod 306 is hinged to several limiting grippers 305. In use, the device is submerged in groundwater. Under the action of the counterweight 4, the overall posture of the device remains vertical. After the device reaches a predetermined depth, the metal lifting ring 304 rises under magnetic force. The metal lifting ring 304 drives the connecting rod 306 to move, and the connecting rod 306 pushes the limiting grippers 305 outward. During this process, the limiting grippers 305 disengage from the limiting ring platform 207, and the floating component 204 can move freely. At this time, the magnetic force attracting the metal lifting ring 304 disappears, and the limiting grippers... Hand 305 resets under the action of spring 307, and the opening and closing valve assembly opens under the action of water pressure, allowing groundwater to enter the sampling chamber 201. The floating assembly 204 rises continuously as the water level in the sampling chamber 201 increases. When the floating assembly 204 rises to a certain position, it drives the opening and closing valve assembly to close again. At the same time, the limiting ring platform 207 and the limiting clamp 305 re-coordinate to limit the movement, so the opening and closing valve assembly cannot open. This ensures that water from non-target water layers cannot enter the sampling chamber 201, thereby avoiding cross-contamination of the water samples.

[0032] The opening and closing valve assembly includes an inlet pipe 206 fixedly connected to one side of the sampling chamber 201. The inlet pipe 206 is L-shaped. A closing valve head 205 is fixedly connected to one side of the floating assembly 204. The closing valve head 205 is L-shaped. The upper end of the closing valve head 205 can cooperate with the upper end of the inlet pipe 206 to close. The floating assembly 204 drives the closing valve head 205 to move. After the upper end of the closing valve head 205 enters the lower end of the inlet pipe 206, a sealing fit is formed, thereby preventing the exchange of water flow inside and outside the sampling chamber 201.

[0033] The sampling mechanism also includes a second threaded ring 202 fixedly connected to the bottom of the sampling chamber 201. The second threaded ring 202 can be threadedly connected to the counterweight 4. The bottom of the sampling chamber 201 is set as an incline. A water tap 208 is threadedly sealed to one side of the sampling chamber 201. The sampling chamber 201 is made of hard transparent plastic material. A limit cover 302 is fixedly connected to the top of the limiting chamber 301. A threaded concave ring is provided on the limit cover 302. The threaded concave ring on the limit cover 302 can be threadedly connected to the second threaded ring 202. Several sampling mechanisms are connected by threads, which makes it easy for staff to increase or decrease the number of sampling mechanisms according to the sampling quantity. The incline at the bottom of the sampling chamber 201 ensures that all the water inside the sampling chamber 201 can be taken out by the staff through the water tap 208.

[0034] The control mechanism includes a control chamber 101. A top cover 102 is fixedly connected to the top of the control chamber 101. A sling 103 is hinged to the top of the top cover 102 via a U-shaped ring. A traction device is connected to the outside of the sling 103. The traction device is existing technology and will not be described in detail here. A first threaded ring 113 is fixedly connected to the bottom of the control chamber 101. The first threaded ring 113 can be threadedly connected to a threaded concave ring on the limiting cover 302. An opening and closing rope winding assembly 109 is fixedly connected inside the control chamber 101. The opening and closing rope winding assembly 109 is existing technology and will not be described in detail here. A winding motor 110 is fixedly connected inside the control chamber 101. The output end of the winding motor 110 is fixedly connected to a rotating shaft inside the opening and closing rope winding assembly 109. An opening and closing traction rope 111 is wound around the opening and closing rope winding assembly 109. A permanent magnet 112 is threadedly connected to the other end of the opening and closing traction rope 111. The device 12 can attract the metal lifting ring 304 to move. In use, after combining the control mechanism, several sampling mechanisms, opening and closing mechanism, and counterweight 4, the opening and closing traction rope 111 passes through several fixed prism tubes 203 and plastic vertical tubes 303 to form a pipe and extends from the underside of the counterweight 4. The permanent magnet 112 is connected to the other end of the opening and closing traction rope 111 through a threaded connection. When the device reaches the sampling depth, the winding motor 110 drives the opening and closing rope winding assembly 109, which winds the opening and closing traction rope 111 back. During this process, the permanent magnet 112 passes from bottom to top through several plastic vertical tubes 303. The magnetic force of the permanent magnet 112 attracts the metal lifting ring 304 to rise, thus contacting the limit of the floating assembly 204. This enables the sequential opening and closing of multiple sampling mechanisms, thereby realizing the function of sampling multiple water layers separately.

[0035] The control chamber 101 is sealed and divided into two areas by a partition plate. The opening and closing rope winding assembly 109 and the winding motor 110 are located in the same area. The other area inside the control chamber 101 is fixedly connected to a depth rope winding assembly 106, on which a depth traction rope 105 is wound. The other end of the depth traction rope 105 is fixedly connected to a float 104. Several reversing pulley sets 107 are fixedly connected inside the control chamber 101. The other area inside the control chamber 101 is fixedly connected to a counter 108, which is electrically connected to the winding motor 110. The counter 108 is existing technology, and its specific structure will not be described here. The depth traction rope 105 is wound around the input end of the counter 108 through the action of the reversing pulley sets 107 and eventually extends out of the upper end cover. In addition to 102, due to the varying groundwater levels, it is difficult to determine the sampling water layer by the length of the descent cable 103. Therefore, a float 104 is installed. When in use, after the device reaches the groundwater level, the float 104 floats on the water surface due to buoyancy. Subsequently, the device continues to descend, and the depth traction rope 105 extends outward continuously under the action of the float 104. During this process, the depth traction rope 105 drives the input end of the counter 108 to rotate. The counter 108 records the number of rotations of its input end to determine the extension length of the depth traction rope 105, thereby determining the location of the device underwater. Furthermore, the counter 108 can be set to a predetermined value. After reaching the predetermined value, an electrical signal is generated to drive the winding motor 110 to work, thereby realizing the function of automatically sampling after reaching the predetermined position.

[0036] Working principle: Based on the environmental conditions of the groundwater sampling location, the staff selects the number of sampling mechanisms to install. Then, the control mechanism, several sampling mechanisms, opening and closing mechanisms, and counterweight 4 are combined using the first threaded ring 113 and the second threaded ring 202. Next, the opening and closing traction rope 111 passes through several fixed ribs 203 and plastic vertical pipes 303 to form a conduit, extending from under the counterweight 4. A permanent magnet 112 is then connected to the other end of the opening and closing traction rope 111 via a threaded connection. Finally, the sampling device is sent into the sampling well using a traction device, and the device reaches the groundwater level. After the water level rises, the float 104 floats on the surface due to buoyancy. The device then continues to descend, and the depth traction rope 105 extends outwards under the influence of the float 104. During this process, the depth traction rope 105 drives the input end of the counter 108 to rotate. The counter 108 records the number of rotations of its input end to determine the extension length of the depth traction rope 105, thus determining the underwater location of the device. Furthermore, the counter 108 can be set to a predetermined value. Upon reaching the predetermined value, it generates an electrical signal to drive the winding motor 110, which in turn drives the opening and closing rope winding assembly 1. 09. The opening and closing rope winding assembly 109 retracts the opening and closing traction rope 111. During this process, the permanent magnet 112 passes from bottom to top through multiple plastic vertical tubes 303. The magnetic force of the permanent magnet 112 attracts the metal lifting ring 304 to rise. The metal lifting ring 304 drives the connecting rod 306 to move. The connecting rod 306 pushes the limiting gripper 305 to move outward. During this process, the limiting gripper 305 disengages from the limiting ring platform 207, and the floating assembly 204 can move freely. At this time, the permanent magnet 112 moves above the metal lifting ring 304, and the magnetic force weakens to less than its own weight. Thus, the metal lifting ring... Ring 304 resets, and limit clamp 305 resets under the action of spring 307. The opening and closing valve assembly opens under water pressure, and groundwater enters the sampling chamber 201. The floating assembly 204 rises continuously as the water level in the sampling chamber 201 rises. When the floating assembly 204 rises to a certain position, it drives the opening and closing valve assembly to close again. At the same time, the limit ring platform 207 and the limit clamp 305 re-coordinate to limit the opening and closing valve assembly, so the opening and closing valve assembly cannot open. This ensures that water from non-target water layers cannot enter the sampling chamber 201, thereby avoiding cross-contamination of the water sample.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A groundwater sampling and acquisition device, comprising a plurality of sampling mechanisms, characterized in that: The sampling mechanism is equipped with an opening and closing mechanism at the top, a control mechanism at the top of the uppermost opening and closing mechanism, and a counterweight (4) at the bottom of the lowermost sampling mechanism. The sampling mechanism includes a sampling chamber (201), a fixed prism tube (203) is fixedly connected in the middle of the sampling chamber (201), a floating assembly (204) is slidably connected on the fixed prism tube (203), an opening and closing valve assembly is provided on one side of the floating assembly (204), a limiting ring platform (207) is fixedly connected to the top of the floating assembly (204), and the outer edge of the top of the limiting ring platform (207) is set as an inclined surface. The opening and closing mechanism includes a limiting ring platform fixedly connected to the top of the sampling chamber (201). The positioning chamber (301) has several circumferentially evenly arranged positioning grips (305) slidably connected inside it. The lower inner end of each positioning grip (305) is set as an inclined surface. The positioning grips (305) can cooperate with the positioning ring platform (207) for positioning. A spring (307) is fixedly connected between the positioning grips (305) and the positioning chamber (301). A plastic vertical tube (303) is fixedly connected in the middle of the positioning chamber (301). A metal lifting ring (304) is slidably connected on the plastic vertical tube (303). A connecting rod (306) is hinged between the metal lifting ring (304) and the several positioning grips (305).

2. The groundwater sampling and acquisition device according to claim 1, characterized in that: The opening and closing valve assembly includes a water inlet pipe (206) fixedly connected to one side of the sampling chamber (201), the water inlet pipe (206) being L-shaped, and a closing valve head (205) fixedly connected to one side of the floating assembly (204), the closing valve head (205) being L-shaped, the upper end of the closing valve head (205) being able to cooperate with the upper end of the water inlet pipe (206) to close.

3. The groundwater sampling and acquisition device according to claim 1, characterized in that: The sampling mechanism also includes a second threaded ring (202) fixedly connected to the bottom of the sampling chamber (201). The second threaded ring (202) can be threadedly connected to the counterweight (4). The bottom of the sampling chamber (201) is set as an inclined surface. A water tap (208) is threadedly sealed on one side of the sampling chamber (201). The sampling chamber (201) is made of hard transparent plastic material.

4. The groundwater sampling and acquisition device according to claim 3, characterized in that: The top of the limiting chamber (301) is fixedly connected to a limiting cover (302), and the limiting cover (302) is provided with a threaded concave ring, which can be threadedly connected to the second threaded ring (202).

5. The groundwater sampling and acquisition device according to claim 4, characterized in that: The control mechanism includes a control chamber (101), with an upper cover (102) fixedly connected to the top of the control chamber (101). A sling (103) is hinged to the top of the upper cover (102) via a U-shaped ring. A traction device is connected to the outside of the sling (103). A first threaded ring (113) is fixedly connected to the bottom of the control chamber (101). The first threaded ring (113) can be threadedly connected to a threaded recess on the limiting upper cover (302). The control chamber (101) is fixed inside... A winding motor (110) is fixedly connected inside the control compartment (101) and the opening and closing rope winding assembly (109) is connected to the control compartment (101). The output end of the winding motor (110) is fixedly connected to the rotating shaft inside the opening and closing rope winding assembly (109). An opening and closing traction rope (111) is wound on the opening and closing rope winding assembly (109). The other end of the opening and closing traction rope (111) is threaded with a permanent magnet (112). The permanent magnet (112) can attract the metal lifting ring (304) to move.

6. The groundwater sampling and acquisition device according to claim 5, characterized in that: The control chamber (101) is sealed and divided into two areas by a partition plate. The opening and closing rope winding assembly (109) and the winding motor (110) are located in the same area. The other area inside the control chamber (101) is fixedly connected to a depth rope winding assembly (106). A depth traction rope (105) is wound on the depth rope winding assembly (106). A float (104) is fixedly connected to the other end of the depth traction rope (105). Several reversing wheel sets (107) are fixedly connected inside the control chamber (101). A counter (108) is fixedly connected to the other area inside the control chamber (101). The counter (108) is electrically connected to the winding motor (110). The depth traction rope (105) is wound around the input end of the counter (108) by the action of the reversing wheel sets (107) and finally extends out of the upper cover (102).

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