An ice bath sampling box for environmental monitoring field sampling

Abstract

The application relates to an ice bath sampling box for environmental monitoring field sampling, and relates to the field of environmental monitoring devices. The ice bath sampling box comprises a box body with a top in an open state, a cavity in the wall of the box body, and a cover body detachably connected to the top of the box body and matched with the top; an ice bag box for containing ice bags is arranged in the box body, the top of the ice bag box is in an open state, a plurality of water leakage holes are formed in the bottom wall of the ice bag box; a sample bottle box is detachably arranged on the top of the ice bag box, the top of the sample bottle box is also in an open state, a plurality of communication holes are formed in the bottom wall of the sample bottle box, and a fixing piece is arranged between the sample bottle box and the ice bag box to fix and connect the sample bottle box and the ice bag box; and an alarm assembly for monitoring and alarming the melting condition of the ice bags is arranged at the bottom of the ice bag box. The application has the effect of reducing the adverse influence on sample gas preservation.

Description

Technical Field

[0001] This application relates to the field of environmental monitoring devices, and in particular to an ice bath sampling box for on-site environmental monitoring sampling. Background Technology

[0002] Samples are the foundation of environmental monitoring data, and the scientific and standardized nature of sample collection and preservation directly affects the validity and authenticity of the monitoring data. With the continuous updating of ecological and environmental monitoring standards, sampling specifications in multiple fields such as water quality, groundwater, microorganisms, and exhaust gas have put forward more stringent requirements for sample preservation temperature. A large number of samples are required to be preserved at low temperature and in the dark in an ice-water bath environment of 0℃~4℃ immediately after collection in order to inhibit microbial activity, slow down the rate of chemical reaction, and prevent the degradation of analytes.

[0003] Common ice bath sampling boxes consist of a foam box with a lid. The operator places ice packs inside the foam box, then collects the sample gas into the sample bottle. Multiple sample bottles are then placed inside the foam box and placed on the ice packs to ensure that the sample gas is in a suitable temperature environment.

[0004] When the distance is long, operators need to frequently check the melting of the ice packs and replace them with new ones in a timely manner. If operators fail to detect and replace the ice packs in time, the temperature inside the foam box will rise, which will have an adverse effect on the preservation of the sample gas. Summary of the Invention

[0005] To reduce the adverse effects on sample gas preservation, this application provides an ice bath sampling box for on-site environmental monitoring sampling.

[0006] This application provides an ice bath sampling box for on-site environmental monitoring sampling, employing the following technical solution:

[0007] An ice bath sampling box for on-site environmental monitoring includes a box body with an open top, a cavity in the wall of the box body, and a cover that is detachably connected to the top of the box body.

[0008] The box contains an ice pack box for holding ice packs. The top of the ice pack box is open, and the bottom wall of the ice pack box has multiple drainage holes.

[0009] The top of the ice pack box can be detachably placed with a sample bottle box, the top of which is also open. The bottom wall of the sample bottle box has multiple connecting holes, and a fastener is provided between the sample bottle box and the ice pack box to connect and fix them.

[0010] The bottom of the ice pack box is equipped with an alarm component that monitors and alerts the system to detect and detect the melting of ice packs.

[0011] Optionally, the alarm component includes a pressure plate disposed below the sample bottle box. The pressure plate is horizontally disposed, and multiple telescopic rods are fixedly connected to the upper surface of the pressure plate. The length direction of the telescopic rods is set along the height direction of the box. The fixed end of the telescopic rod is fixedly connected to the outer bottom wall of the sample bottle box. The length of the telescopic rod is extendable and the telescopic rod is elastic.

[0012] Multiple tapered rods are fixedly connected to the lower surface of the pressure plate;

[0013] A distance sensor for measuring the distance between the upper surface of the pressure plate and the lower surface of the sample bottle box is installed on the lower surface of the sample bottle box. A controller and an alarm are also installed on the box, and the distance sensor and the alarm are electrically connected to the controller.

[0014] Optionally, the telescopic rod includes a sleeve fixedly connected to the lower surface of the sample bottle box, a plug rod slidably inserted into the sleeve, the lower end of the plug rod being fixedly connected to the upper surface of the pressure plate, and a connecting spring fixedly connected to the inner bottom wall of the sleeve, the lower end of the connecting spring being fixedly connected to the upper end of the plug rod.

[0015] Optionally, the fastener includes a bottom plate fixedly connected to two opposing inner side walls of the ice pack box, the bottom plate being horizontally set, and a top plate corresponding to the bottom plate being fixedly connected to the lower surface of the sample bottle box.

[0016] A screw rod perpendicular to the base plate is fixedly connected to the base plate. A through hole adapted to the screw rod is opened on the top plate. Each screw rod is inserted into the corresponding through hole. A nut is threaded onto each screw rod. The nut is located inside the sample bottle box and contacts the inner bottom wall of the sample bottle box.

[0017] Optionally, a water inlet hole communicating with the cavity is provided on the inner bottom wall of the box, and a drain pipe communicating with the cavity is fixedly connected to the bottom of one of the outer side walls of the box, and a valve is installed on the drain pipe.

[0018] Optionally, the cavity is further provided with a sealing component for sealing the water inlet hole.

[0019] Optionally, the pressure plate is adapted to the ice pack box, each side wall of the pressure plate is in contact with the corresponding inner side wall of the ice pack box, and multiple support pillars are fixedly connected to the lower surface of the ice pack box.

[0020] The sealing assembly includes a sealing plate disposed in a cavity, which is adapted to the water inlet and can seal the water inlet. Two connecting rods are symmetrically fixedly connected to the side wall of the sealing plate, and the connecting rods are horizontally arranged.

[0021] The ends of the two connecting rods that are far apart from each other are slidably connected to the cavity wall corresponding to the cavity. The sliding direction of the connecting rods is set along the height direction of the box. The end of the connecting rod that is far away from the sealing plate is fixedly connected to a support spring. The lower end of the support spring is fixed to the bottom wall of the cavity. When the support spring is not subjected to external force, the sealing plate seals the water inlet.

[0022] A vertical rod is fixedly connected to the upper surface of the sealing plate. The upper end of the vertical rod is located above the inner bottom wall of the box, and the size of the vertical rod is smaller than the size of the water inlet hole.

[0023] Optionally, a slider is fixedly connected to one end of each of the two connecting rods that are far apart from each other. A groove adapted to the slider is opened on the cavity wall corresponding to the cavity. The length direction of the groove is set along the height direction of the box. Each slider is slidably inserted into the corresponding groove.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. By setting up a box, cavity, cover, ice pack box, water leakage hole, sample bottle box, connecting hole, fixing parts and alarm components, the melting degree of ice packs can be monitored and alarmed. Operators can replace ice packs in time to keep the temperature inside the box at a suitable temperature, thereby reducing the adverse effects on the sample gas preservation effect.

[0026] 2. By setting up pressure plates, cone rods, telescopic rods, distance sensors, alarms, and controllers, the melting of ice packs inside the box can be monitored in real time. When ice packs need to be replaced, an alarm can be issued to remind operators to replace them.

[0027] 3. By setting up a water inlet, a drain pipe with a valve, a sealing plate, a connecting rod, a support spring, and a vertical rod, the water inlet can be automatically controlled to open and close. When the operator removes the ice pack box and sample bottle box, the water inlet will automatically close, thus keeping the cavity full of water. Before placing a new ice pack, the drain pipe can be controlled to drain some of the water in the cavity, thereby providing space for new ice water to enter the cavity and improving the cold insulation effect of the box. Attached Figure Description

[0028] Figure 1 This is a schematic diagram illustrating the overall structure of the ice bath sampling box in an embodiment of this application.

[0029] Figure 2 This is a cross-sectional view illustrating the overall structure of the ice bath sampling box in an embodiment of this application.

[0030] Figure 3 This is embodied in the embodiments of this application. Figure 2 Enlarged view of the structure at point A in the middle.

[0031] Figure 4 This is a cross-sectional view illustrating the positional relationship between the sample bottle box, the ice pack box, and the box body in an embodiment of this application.

[0032] Figure 5 This is a cross-sectional view illustrating the telescopic rod structure in an embodiment of this application.

[0033] Figure 6 This is a cross-sectional view illustrating a portion of the structure of the sealing component in an embodiment of this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Box body; 11. Cavity; 12. Water inlet; 13. Drain pipe; 14. Slide groove; 2. Cover; 3. Ice pack box; 31. Leakage hole; 32. Support column; 4. Sample bottle box; 41. Connecting hole; 42. Partition; 5. Fixing component; 51. Bottom plate; 52. Top plate; 53. Screw; 54. Nut; 6. Alarm assembly; 61. Fixing plate; 62. Telescopic rod; 621. Sleeve; 622. Plug-in rod; 623. Connecting spring; 63. Pressure plate; 64. Conical rod; 65. Distance sensor; 7. Sealing assembly; 71. Sealing plate; 72. Connecting rod; 73. Slider; 74. Support spring; 75. Vertical rod. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0036] This application discloses an ice bath sampling box for on-site environmental monitoring. It includes a box body 1 with an open top, a cavity 11 within the wall of the box body 1, and a water inlet 12 communicating with the cavity 11 on the inner bottom wall of the box body 1. The diameter of the water inlet 12 gradually increases from top to bottom. A drain pipe 13 communicating with the cavity 11 is fixedly connected to one of the outer side walls of the box body 1, and a valve is installed on the drain pipe 13. A cover 2 is detachably fitted onto the top of the box body 1.

[0037] The box 1 contains an ice pack box 3 for holding ice packs. The top of the ice pack box 3 is open, and multiple drainage holes 31 are opened on the lower surface of the ice pack box 3. Support columns 32 are fixedly connected to the four corners of the lower surface of the ice pack box 3. The support columns 32 cooperate with the inner bottom wall of the box 1, so that there is a gap between the lower surface of the ice pack box 3 and the inner bottom wall of the box 1, so that the water flowing out of the ice pack box 3 can enter the cavity 11 better through the water inlet hole 12.

[0038] Above the ice pack box 3 is a sample bottle box 4, the top of which is also open. Multiple connecting holes 41 are provided on the lower surface of the sample bottle box 4, allowing the cold air inside the ice pack box 3 to enter the sample bottle box 4 more effectively. Multiple parallel partitions 42 are provided inside the sample bottle box 4. The partitions 42 are fixedly connected to the lower surface and corresponding side walls of the sample bottle box 4. The multiple partitions 42 divide the sample bottle box 4 into multiple sample bottle areas, each of which can hold one sample bottle. The partitions 42 separate two adjacent sample bottles, reducing the possibility of sample bottles breaking due to collisions during transportation.

[0039] A fastener 5 is provided between the ice pack box 3 and the sample bottle box 4 to connect and fix the two. The fastener 5 includes two bottom plates 51 fixedly connected to the two inner side walls of the ice pack box 3. Both bottom plates 51 are horizontally set. A top plate 52 corresponding to the bottom plate 51 is fixedly connected to the lower surface of the sample bottle box 4. When the sample bottle box 4 is inserted into the ice pack box 3, the top plate 52 overlaps the corresponding bottom plate 51. Screws 53 perpendicular to the bottom plate 51 are fixedly connected to both sides of the upper surface of the bottom plate 51. The top plate 52 has through holes corresponding to the screws 53. The screws 53 are inserted into the corresponding through holes. Nuts 54 are threadedly connected to the screws 53. The nuts 54 are located inside the sample bottle box 4 and are fixedly connected to the inner bottom wall of the sample bottle box 4.

[0040] The sample bottle box 4 is equipped with an alarm component 6 at the bottom to monitor and alarm the melting of the ice packs. The alarm component 6 includes two fixed plates 61 on the lower surface of the sample bottle box 4. The lower surface of the fixed plates 61 is fixedly connected to elastic telescopic rods 62. The length of the telescopic rods 62 is set along the height of the box body 1. The lower ends of the two telescopic rods 62 are fixedly connected to a pressure plate 63. The pressure plate 63 is set horizontally and is adapted to the ice pack box 3. When the sample bottle box 4 and the ice pack box 3 are engaged, the pressure plate 63 is inserted into the ice pack box 3, and each side wall of the pressure plate 63 is in contact with the corresponding inner side wall of the ice pack box 3.

[0041] The telescopic rod 62 includes a sleeve 621 fixedly connected to the lower surface of the fixed plate 61. A connecting rod 622 is slidably inserted into the sleeve 621. A connecting spring 623 is fixedly connected to the upper end of the connecting rod 622, and the upper end of the connecting spring 623 is fixedly connected to the inner bottom wall of the sleeve 621. Multiple tapered rods 64 are fixedly connected to the lower surface of the pressure plate 63, and the multiple tapered rods 64 are evenly distributed on the pressure plate 63. A distance measuring sensor 65 is fixedly connected to the side wall of the fixed plate 61. The distance measuring sensor 65 is used to measure the distance between the upper surface of the pressure plate 63 and the lower surface of the sample bottle box 4. An alarm and a controller are also installed on the box body 1. Neither the alarm nor the controller is shown in the figure. The distance measuring sensor 65 and the alarm are both electrically connected to the controller.

[0042] In use, the operator places the ice pack on the inner bottom wall of the ice pack box 3, and then places the sample bottle box 4 on top of the ice pack box 3. When placing the sample bottle box 4, the pressure plate 63 is inserted into the ice pack box 3. When the pressure plate 63 contacts the ice pack, as the sample bottle box 4 continues to move downward, the connecting spring 623 is compressed, and at the same time, the cone rod 64 is inserted into the ice pack, punching holes in the upper surface of the ice pack. When the top plate 52 contacts the bottom plate 51, the sample bottle box 4 is installed in place. At this time, the screw 53 is inserted into the corresponding through hole, and the pressure plate 63 is pressed against the ice pack. Then, a nut 54 is turned on each screw 53 until the nut 54 is pressed against the top plate 52. After the sample bottle box 4 and the ice pack box 3 are fixed, the ice pack box 3 and the sample bottle box 4 are placed into the box body 1 together until the support column 32 contacts the inner bottom wall of the box body 1. Then, the sample bottle filled with sample gas is placed in the sample bottle box 4, and then the cover 2 is closed.

[0043] As time passes, the ice inside the ice pack slowly melts. Simultaneously, the connecting spring 623 gradually returns to its original shape, pushing the pressure plate 63 downwards. The pressure plate 63 forces water out of the ice pack, and the water flows into the cavity 11 through the drain hole 31 and the inlet hole 12. Due to the pressure of the pressure plate 63, as more water flows out, the pressure plate 63 pushes the water to the top of the cavity 11, thus filling the cavity 11 completely. This ice-filled cavity 11 further enhances the cooling effect of the chamber 1. As the ice in the ice pack continues to melt, the connecting spring 623 returns to its original shape, causing the pressure plate 63 to continue moving downwards. When the pressure plate 63 reaches the set position, the distance sensor 65 transmits a signal to the controller. The controller then activates the alarm, reminding the operator to replace the ice pack in the chamber 1. Through this process, the operator can promptly replace the ice pack, maintaining the temperature inside the chamber 1 at a suitable level, thereby reducing any adverse effects on the sample gas preservation effect.

[0044] In order to maintain the effect of filling the cavity 11 with ice water, a sealing assembly 7 is provided in the cavity 11 to seal the water inlet 12. The sealing assembly 7 includes a sealing plate 71 set at the bottom of the cavity 11. The sealing plate 71 is set horizontally and its size is larger than the size of the water inlet 12 so that the sealing plate 71 can seal the water inlet 12. Two connecting rods 72 are symmetrically fixedly connected to the side wall of the sealing plate 71. The connecting rods 72 are also set horizontally. A slider 73 is fixedly connected to the end of the connecting rod 72 away from the sealing plate 71. The cavity wall of the cavity 11 has a sliding groove 14 that corresponds to the slider 73. The length direction of the sliding groove 14 is set along the height direction of the box 1. Each slider 73 is slidably inserted into the corresponding sliding groove 14.

[0045] A support spring 74 is fixedly connected to the lower surface of the slider 73. Each support spring 74 is located in the corresponding groove 14. The lower end of the support spring 74 is fixed to the lower end wall of the groove 14. The support spring 74 supports the slider 73, the connecting rod 72 and the sealing plate 71, so that the sealing plate 71 fits against the corresponding cavity wall of the cavity 11, thereby sealing the water inlet 12. A vertical rod 75 is fixedly connected to the upper surface of the sealing plate 71. When the sealing plate 71 seals the water inlet 12, the upper end face of the vertical rod 75 is higher than the inner bottom wall of the box 1, and the cross-sectional dimension of the vertical rod 75 is smaller than the dimension of the water inlet 12.

[0046] During the process of placing the ice pack box 3 inside the box 1, the lower surface of the ice pack box 3 contacts the upper end face of the vertical rod 75. As the ice pack box 3 moves downward, it presses the vertical rod 75, the sealing plate 71, the connecting rod 72, and the slider 73 downward, causing the sealing plate 71 to release the blockage of the water inlet hole 12 and compressing the support spring 74. Since the cross-sectional dimension of the vertical rod 75 is smaller than the diameter of the water inlet hole 12, the water in the box 1 can flow into the cavity 11 through the water inlet hole 12.

[0047] When the operator needs to replace the ice pack, the operator removes the ice pack box 3 and the sample bottle box 4 together from the box 1. As the sample bottle box 4 and the ice pack box 3 move upward, the support spring 74 returns to its original deformation and pushes the connecting rod 72, the sealing plate 71 and the vertical rod 75 to move upward and reset. When the ice pack box 3 and the vertical rod 75 are no longer in contact, the support spring 74 returns to its initial state. At this time, the sealing plate 71 seals the water inlet hole 12, reducing the possibility of water in the cavity 11 being discharged outside the cavity 11 through the water inlet hole 12. After removing the ice pack box 3 and the sample bottle box 4, the operator rotates the nut 54 to separate the nut 54 from the screw 53, and then pulls the sample bottle box 4 upward to separate it from the ice pack box 3. After that, a new ice pack is replaced, and then the sample bottle box 4 is fixed back onto the ice pack box 3 according to the above operation.

[0048] Before placing the ice pack box 3 and the sample box into the box body 1, the operator opens the valve on the drain pipe 13 to partially drain the water in the cavity 11, providing space for new ice water to enter the cavity 11. Then, following the above operation, the ice pack box 3 and the sample bottle box 4 are placed into the box body 1, and finally the lid 2 is closed.

[0049] The implementation principle of an ice bath sampling box for on-site environmental monitoring according to an embodiment of this application is as follows: The operator first puts ice bags into the ice bag box 3, and places the sample bottle box 4 on the ice bag box 3, inserts the pressure plate 63 into the ice bag box 3, and makes the bolts cooperate with the top plate 52. Then, a nut 54 is screwed on each bolt until the nut 54 abuts against the top plate 52. At this time, the sample bottle box 4 and the ice bag box 3 are fixed. Then, the ice bag box 3 and the sample bottle box 4 are placed in the box body 1. When the support column 32 contacts the bottom wall of the box body 1, the water inlet 12 is opened.

[0050] Place the sample bottle filled with sample gas into the sample bottle box 4, and then close the cover 2. As the ice in the ice pack melts, the connecting spring 623 causes the pressure plate 63 to move downward, pressing water into the cavity 11 and moving the water to the higher part of the cavity 11. When the alarm sounds, the operator opens the cover 2, takes out the sample bottle box 4 and the ice pack box 3, and at the same time, the supporting spring 74 causes the sealing plate 71 to seal the water inlet 12.

[0051] After removing the sample bottle box 4 and the ice pack box 3, separate the sample bottle box 4 and the ice pack box 3, and replace the ice pack. Then, fix the ice pack box 3 and the sample bottle box 4 again according to the above operation. Before putting the sample bottle box 4 and the ice pack box 3 into the box body 1, open the valve on the drain pipe 13 to drain some of the water in the cavity 11, and then put the sample bottle box 4 and the ice pack box 3 into the box body 1. Finally, put the cover 2 on.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An ice bath sampling box for on-site environmental monitoring, characterized in that: It includes a box (1) with an open top, a cavity (11) in the wall of the box (1), and a cover (2) that is adapted to the top of the box (1). The box (1) contains an ice pack box (3) for holding ice packs. The top of the ice pack box (3) is open, and multiple drainage holes (31) are provided on the bottom wall of the ice pack box (3). The top of the ice pack box (3) is detachably placed with a sample bottle box (4). The top of the sample bottle box (4) is also open. Multiple connecting holes (41) are provided on the bottom wall of the sample bottle box (4). A fastener (5) is provided between the sample bottle box (4) and the ice pack box (3) to connect and fix the two. The bottom of the ice pack box (3) is equipped with an alarm component (6) for monitoring and alarming the melting of ice packs.

2. The ice bath sampling box for on-site environmental monitoring sampling according to claim 1, characterized in that: The alarm component (6) includes a pressure plate (63) set below the sample bottle box (4). The pressure plate (63) is set horizontally, and multiple telescopic rods (62) are fixedly connected to the upper surface of the pressure plate (63). The length direction of the telescopic rods (62) is set along the height direction of the box (1). The fixed end of the telescopic rod (62) is fixedly connected to the outer bottom wall of the sample bottle box (4). The length of the telescopic rod (62) is telescopic, and the telescopic rod (62) is elastic. Multiple tapered rods (64) are fixedly connected to the lower surface of the pressure plate (63). A distance sensor (65) for measuring the distance between the upper surface of the pressure plate (63) and the lower surface of the sample bottle box (4) is installed on the lower surface of the sample bottle box (4). A controller and an alarm are also installed on the box body (1). The distance sensor (65) and the alarm are both electrically connected to the controller.

3. The ice bath sampling box for on-site environmental monitoring sampling according to claim 2, characterized in that: The telescopic rod (62) includes a sleeve (621) fixedly connected to the lower surface of the sample bottle box (4), a plug rod (622) is slidably inserted into the sleeve (621), the lower end of the plug rod (622) is fixedly connected to the upper surface of the pressure plate (63), and a connecting spring (623) is fixedly connected to the inner bottom wall of the sleeve (621), the lower end of the connecting spring (623) is fixedly connected to the upper end of the plug rod (622).

4. An ice bath sampling box for on-site environmental monitoring sampling according to any one of claims 1 to 3, characterized in that: The fastener (5) includes a bottom plate (51) fixedly connected to the two inner side walls of the ice pack box (3), the bottom plate (51) is horizontally set, and a top plate (52) corresponding to the bottom plate (51) is fixedly connected to the lower surface of the sample bottle box (4). A screw (53) perpendicular to the base plate (51) is fixedly connected to the base plate (51). A through hole adapted to the screw (53) is opened on the top plate (52). Each screw (53) is inserted into the corresponding through hole. A nut (54) is threaded onto each screw (53). The nut (54) is located inside the sample bottle box (4) and contacts the inner bottom wall of the sample bottle box (4).

5. An ice bath sampling box for on-site environmental monitoring sampling according to claim 2 or 3, characterized in that: The inner bottom wall of the box (1) is provided with a water inlet hole (12) communicating with the cavity (11). A drain pipe (13) communicating with the cavity (11) is fixedly connected to the bottom of one of the outer side walls of the box (1). A valve is installed on the drain pipe (13).

6. The ice bath sampling box for on-site environmental monitoring sampling according to claim 5, characterized in that: The cavity (11) is also provided with a sealing component (7) for sealing the water inlet (12).

7. The ice bath sampling box for on-site environmental monitoring sampling according to claim 6, characterized in that: The pressure plate (63) is adapted to the ice pack box (3), and each side wall of the pressure plate (63) is in contact with the corresponding inner side wall of the ice pack box (3). Multiple support pillars (32) are fixedly connected to the lower surface of the ice pack box (3). The sealing assembly (7) includes a sealing plate (71) disposed in the cavity (11). The sealing plate (71) is adapted to the water inlet (12) and can seal the water inlet (12). Two connecting rods (72) are symmetrically fixedly connected to the side wall of the sealing plate (71). The connecting rods (72) are horizontally arranged. The ends of the two connecting rods (72) that are far apart from each other are slidably connected to the cavity wall corresponding to the cavity (11). The sliding direction of the connecting rods (72) is set along the height direction of the box (1). The end of the connecting rod (72) that is far away from the sealing plate (71) is fixedly connected to a support spring (74). The lower end of the support spring (74) is fixed to the bottom wall of the cavity (11). When the support spring (74) is not subjected to external force, the sealing plate (71) seals the water inlet (12). A vertical rod (75) is fixedly connected to the upper surface of the sealing plate (71). The upper end of the vertical rod (75) is located above the inner bottom wall of the box (1), and the size of the vertical rod (75) is smaller than the size of the water inlet hole (12).

8. The ice bath sampling box for on-site environmental monitoring sampling according to claim 1, characterized in that: The two connecting rods (72) are fixedly connected to sliders (73) at their far ends. The cavity wall corresponding to the cavity (11) is provided with a groove (14) that matches the slider (73). The length direction of the groove (14) is set along the height direction of the box (1). Each slider (73) is slidably inserted into the corresponding groove (14).

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