Sample storage equipment for environment detection

Abstract

The invention relates to the technical field of sample storage equipment, in particular to sample storage equipment for environment detection. Comprising a housing; the refrigerator is mounted in the shell; the copper pipe is connected to the top of the refrigerator; the storage barrel is rotationally connected to the interior of the shell and located above the refrigerator, and the copper pipe penetrates through the middle of the storage barrel; the placing frames are connected into the storage cylinder at intervals in the circumferential direction; the fixing sleeve is connected to the outer wall of the shell; the rotating frame is rotationally connected into the fixing sleeve; the material collecting barrel is connected to the rotating frame; the vertical pipe is connected to the bottom of the material collecting barrel and keeps communicating. Through combined use of the material collecting barrel, the vertical pipe, the rubber pipe and the electromagnetic valve, efficient transfer of samples from collection to storage can be achieved, in the operation process, researchers can pour the collected sediment samples into the material collecting barrel, then the amount of the samples in each sampling bottle is accurately adjusted by controlling the electromagnetic valve, and the sampling efficiency is improved. And the problem of sample loss or pollution caused by direct dumping in the traditional method is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of sample storage devices, and in particular to a sample storage device for environmental detection. Background Art

[0002] Antibiotics play an important role in disease treatment and animal husbandry, but a large number of antibiotics produced by human activities enter the marine environment through river input, sewage discharge, surface runoff, etc., resulting in their frequent detection in seawater, sediments and marine organisms. In order to study the distribution, migration and ecological risks of antibiotics in the marine environment, it is usually necessary to collect samples of seawater and seabed sediments for analysis.

[0003] Currently, the collection of seafloor sediments primarily relies on shipboard operations. Researchers must arrive at designated sampling sites by boat and then use a stainless steel grab-type gravity sampler to obtain sediment samples from the seafloor. After sampling, the inner walls of the sampling bottles must be rinsed multiple times with seawater to reduce contamination risks and ensure sample representativeness. The samples are then poured into the sampling bottles, which are then placed in refrigerated equipment for refrigerated transport. However, when operating on board, salvaging seawater to rinse the inner walls of the sampling bottles is difficult and cumbersome, which reduces sampling efficiency. Furthermore, because the mouths of sampling bottles are typically small, directly transferring samples into them is difficult, time-consuming, and prone to sample loss or contamination. This is especially true if samples accidentally fall outside the bottles. If not cleaned promptly, residual sample can contaminate the refrigerated transport equipment. Furthermore, samples must be dispensed into multiple brown, light-proof sampling bottles and quickly refrigerated to maintain stability. However, manual dispensing is slow and can affect the chemical properties of the samples in high temperatures or strong light. Summary of the Invention

[0004] In view of this, the present invention provides a sample storage device for environmental testing, which can overcome the shortcomings of manually transferring samples into sampling bottles, which is not only cumbersome to operate and affects the sampling efficiency and the chemical properties of the samples, but also the samples are easily dropped on the outside of the sampling bottles, thereby contaminating the refrigerated transportation equipment.

[0005] The technical solution of the present invention is: a sample storage device for environmental testing, including: an outer shell; a refrigerator, installed inside the outer shell; a copper tube, connected to the top of the refrigerator; a storage cylinder, rotatably connected to the inside of the outer shell, and the storage cylinder is located above the refrigerator, and the copper tube runs through the middle of the storage cylinder; a placement frame, circumferentially spaced and connected to the inside of the storage cylinder; a fixed sleeve, connected to the outer wall of the outer shell; a rotating rack, rotatably connected to the fixed sleeve; a collecting cylinder, connected to the rotating rack; a vertical pipe, connected to the bottom of the collecting cylinder and kept connected; a rubber tube, connected to the bottom of the vertical pipe and kept connected; an electromagnetic valve, installed on the vertical pipe; a timer, installed on the outer wall of the collecting cylinder; a sealing assembly, arranged on the outer shell, for sealing the storage cylinder; a positioning assembly, arranged on the outer shell, for positioning the storage cylinder; a cleaning assembly, arranged on the outer shell, for cleaning the sampling bottle.

[0006] Furthermore, the sealing assembly includes: a sealing cover, which is placed on the top of the storage tube and has symmetrical through holes on the sealing cover; a positioning ring, which is circumferentially spaced and connected to the inside of the sealing cover; a connecting sleeve, which is symmetrically connected to the outer wall of the storage tube; a screw, which is connected to the inside of the connecting sleeve; a nut, which is threadedly connected to the screw; and a connecting plate, which is connected to the outer wall of the nut, and the bottom of the connecting plate is in contact with the top of the sealing cover.

[0007] Furthermore, the positioning assembly includes: a block, which is connected to the outer wall of the storage tube at circumferential intervals, and a first circular groove is opened on the side of the block; a first fixed frame, which is connected to the outer wall of the outer shell; a first clamping rod, which is slidably connected to the first fixed frame, and the end of the first clamping rod is located in one of the first circular grooves; a first spring, which connects the first fixed frame and the first clamping rod; a limiting mechanism, which is arranged on the fixed sleeve and is used to limit the rotating frame.

[0008] Furthermore, the limiting mechanism includes: a second fixed frame, symmetrically connected to the outer wall of the fixed sleeve; a second clamping rod, slidably connected to the second fixed frame, and a second circular groove is opened on the rotating frame, and one end of the second clamping rod is located in the second circular groove; a second spring, connecting the second fixed frame and the second clamping rod.

[0009] Furthermore, the cleaning assembly includes: a mounting bracket connected to the outer wall of the outer shell; a conical block connected to the mounting bracket; a support rod connected to the conical block at circumferential intervals; a first hose connected to the conical block; a first water pump arranged below the first hose, and the water outlet of the first water pump is connected to the lower end of the first hose and maintained in communication; a rotating nozzle rotatably mounted on the upper end of the first hose.

[0010] Furthermore, it also includes: a fixed rod, symmetrically connected to the outer wall of the vertical tube; a rotating splint, symmetrically and rotationally connected to the fixed rod; a round rod, connected to the side of the rotating splint; a rotating sleeve, rotatably connected to the round rod; an electric push rod, installed on one of the rotating sleeves, and the telescopic rod of the electric push rod is connected to the other rotating sleeve.

[0011] Furthermore, it also includes: an air guide plate, which is connected to the bottom of the storage cylinder at circumferential intervals and is located on the inner side of the copper tube; and a fan, which is installed on the top of the air guide plate.

[0012] Furthermore, it also includes: a hollow plate, connected to the outer wall of the collection barrel; a second hose, connected to the bottom of the hollow plate and kept connected; a second water pump, arranged below the second hose, and the water outlet of the second water pump is connected to the lower end of the second hose and kept connected; an annular nozzle, installed on the inner wall of the collection barrel, and the annular nozzle is connected to the hollow plate and kept connected.

[0013] The present invention has the following advantages: 1. The present invention can achieve efficient transfer of samples from collection to storage through the combined use of a collecting barrel, a vertical pipe, a rubber tube and a solenoid valve. During operation, researchers can pour the collected sediment samples into the collecting barrel, and then accurately adjust the sample amount in each sampling bottle by controlling the solenoid valve, avoiding sample loss or contamination problems caused by direct dumping in traditional methods. In particular, when the rotating frame rotates to the specified position, the solenoid valve can accurately drop the sample into the corresponding sampling bottle, ensuring the accuracy and representativeness of the sample transfer.

[0014] This invention significantly improves the safety and stability of samples during storage and transportation through the synergistic effect of the refrigerator, copper tubes, fan, and air deflectors. Specifically, the refrigerator allows the refrigerant circulating within the copper tubes to effectively lower the temperature within the storage cylinder, while the fan directs air through the tubes via the air deflectors, further enhancing air circulation and evenly distributing the cooling energy, ensuring consistent temperature throughout the storage space. This design not only ensures that samples are kept at low temperatures during transportation but also reduces the impact of temperature fluctuations on the sample's chemical properties.

[0015] 3. The present invention uses a cleaning assembly consisting of a first hose, a first water pump, and a rotating nozzle, which can greatly simplify the cleaning steps of the sampling bottle and improve work efficiency. Before each sampling, researchers can use the first water pump to extract seawater and use the rotating nozzle to rinse the sampling bottle in all directions. The design of the rotating nozzle enables it to rotate under the impact of water flow, thereby effectively cleaning the inner wall of the sampling bottle. This mechanism not only solves the problem of inconvenient cleaning on board, but also shortens preparation time, reduces the possibility of manual intervention, and reduces the risk of cross-contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a cross-sectional view of the housing and storage cartridge of the present invention.

[0018] Figure 3This is a schematic diagram of the installation of the rotating frame, collecting barrel, vertical pipe, rubber tube and solenoid valve of the present invention.

[0019] Figure 4 For the present invention Figure 3 Schematic diagram of the three-dimensional structure from another perspective.

[0020] Figure 5 Schematic diagram of the specific structure of the sealing assembly of the present invention.

[0021] Figure 6 This is a schematic diagram of the installation of the positioning component of the present invention.

[0022] Figure 7 It is a cross-sectional view of the first fixing bracket of the present invention.

[0023] Figure 8 It is a cross-sectional view of the rotating frame and the second fixed frame of the present invention.

[0024] Figure 9 This is a schematic diagram of the installation of the support rod, the first hose, the first water pump and the rotating spray head of the present invention.

[0025] Figure 10 The figure is a schematic diagram of the installation of the fixed rod, rotating splint, round rod, rotating sleeve and electric push rod of the present invention.

[0026] Figure 11 This is a schematic diagram of the installation of the air guide plate and the fan of the present invention.

[0027] Figure 12 This is a schematic diagram of the installation of the hollow plate, the second hose, the second water pump and the annular nozzle of the present invention.

[0028] Parts names and serial numbers in the figure: 1-housing, 2-refrigerator, 201-copper tube, 3-storage cylinder, 4-placement frame, 5-fixed sleeve, 6-rotating frame, 7-collecting cylinder, 8-vertical pipe, 9-rubber tube, 10-solenoid valve, 11-timer, 12-sealing cover, 1201-through hole, 13-positioning ring, 14-connecting sleeve, 15-screw, 16-nut, 17-connecting plate, 18-block, 1801-first circular groove, 19-first fixing frame, 20-first clamping rod, 21-first spring, 22-second circular groove, 23-second fixing bracket, 24-second clamping rod, 25-second spring, 26-mounting bracket, 27-conical block, 28-support rod, 29-first hose, 30-first water pump, 31-rotating nozzle, 32-fixing rod, 33-rotating splint, 34-round rod, 35-rotating sleeve, 36-electric push rod, 37-air guide plate, 38-fan, 39-hollow plate, 40-second hose, 41-second water pump, 42-annular nozzle. DETAILED DESCRIPTION

[0029] Example: A sample storage device for environmental testing, such as Figures 1-9 As shown, it includes a shell 1, a refrigerator 2, a copper tube 201, a storage cylinder 3, a placement frame 4, a fixing sleeve 5, a rotating frame 6, a collecting cylinder 7, a vertical pipe 8, a rubber tube 9, a solenoid valve 10, a timer 11, a sealing component, a positioning component and a cleaning component. The refrigerator 2 is installed on the lower side of the shell 1, and the top of the refrigerator 2 is connected to the copper tube 201. The upper side of the shell 1 is rotatably connected to the storage cylinder 3. The bottom of the storage cylinder 3 is in contact with the top of the refrigerator 2, and the copper tube 201 runs through the middle of the storage cylinder 3. A plurality of placement frames 4 for placing sampling bottles are connected to the bottom of the storage cylinder 3 at circumferential intervals. The upper right side of the shell 1 is connected to a fixed The fixed sleeve 5 is rotatably connected to a rotating frame 6 inside the fixed sleeve 5, and a collecting barrel 7 is connected to the top of the rotating frame 6. The lower part of the collecting barrel 7 is conical in shape, and the top and bottom of the collecting barrel 7 are both open designs. The bottom of the collecting barrel 7 is connected to a vertical pipe 8 and remains connected. The bottom of the vertical pipe 8 is connected to a rubber tube 9 and remains connected. A solenoid valve 10 is installed on the vertical pipe 8, and a timer 11 is installed on the lower rear side of the collecting barrel 7. The outer shell 1 is provided with a sealing assembly for sealing the storage barrel 3, and the outer shell 1 is provided with a positioning assembly for positioning the storage barrel 3. The outer shell 1 is also provided with a cleaning assembly for cleaning the sampling bottle.

[0030] like Figure 1 and Figure 5 As shown, the sealing assembly includes a sealing cover 12, a positioning ring 13, a connecting sleeve 14, a screw 15, a nut 16 and a connecting plate 17. The sealing cover 12 is placed on the top of the storage cylinder 3, and the sealing cover 12 is symmetrically provided with through holes 1201. A plurality of positioning rings 13 are connected to the inside of the sealing cover 12 at circumferential intervals. The positioning rings 13 correspond to the placement frame 4 one by one. The upper parts of the front and rear sides of the outer shell 1 are connected with connecting sleeves 14, and screws 15 are connected to the two connecting sleeves 14. The screws 15 pass through the through holes 1201. The upper ends of the two screws 15 are threadedly connected to nuts 16. The two nuts 16 are connected to a connecting plate 17 on the side close to each other, and the bottom of the connecting plate 17 is in contact with the top of the sealing cover 12.

[0031] like Figure 6-Figure 8As shown, the positioning assembly includes a block 18, a first fixing frame 19, a first clamping rod 20, a first spring 21 and a limiting mechanism. A plurality of blocks 18 are connected to the upper circumferential portion of the outer wall of the storage cylinder 3. The blocks 18 correspond to the placement frame 4 one by one, and a first circular groove 1801 is opened on the outer side of the block 18. The first fixing frame 19 is connected to the right front side of the upper portion of the housing 1. The first clamping rod 20 is slidably connected to the upper portion of the first fixing frame 19. The rear end of the first clamping rod 20 is an arc surface, and the end of the first clamping rod 20 is located in one of the first circular grooves 1801. The two ends of the first spring 21 are respectively connected to the first fixing frame 1 9 and the first clamping rod 20, the fixed sleeve 5 is provided with a limiting mechanism for limiting the rotating frame 6; the limiting mechanism includes a second fixed frame 23, a second clamping rod 24 and a second spring 25, a second circular groove 22 is opened on the left side of the rotating frame 6, the upper parts of the left and right sides of the fixed sleeve 5 are connected to the second fixed frames 23, and the upper parts of the two second fixed frames 23 are slidably connected to the second clamping rod 24, and the ends of the two second clamping rods 24 close to each other are both arc surfaces, and the end of the second clamping rod 24 on the left is located in the second circular groove 22, and the two ends of the second spring 25 are respectively connected to the second fixed frame 23 and the second clamping rod 24.

[0032] like Figure 1 and Figure 9 As shown, the cleaning assembly includes a mounting bracket 26, a conical block 27, a support rod 28, a first hose 29, a first water pump 30 and a rotating nozzle 31. The mounting bracket 26 is connected to the front right side of the shell 1, and the conical block 27 is connected to the mounting bracket 26. A plurality of support rods 28 are connected to the top of the conical block 27 at circumferential intervals, and the upper part of the support rods 28 is inclined outward. A first hose 29 is connected to the middle part of the conical block 27, and a first water pump 30 is provided below the first hose 29, and the water outlet of the first water pump 30 is connected to the lower end of the first hose 29 and remains in communication, and a rotating nozzle 31 is rotatably installed on the upper end of the first hose 29.

[0033] In the initial state, the end of the second clamping rod 24 on the left is located in the second circular groove 22, while the end of the second clamping rod 24 on the right is in contact with the outer wall of the rotating frame 6, and the second spring 25 on the right is in a compressed state; when the storage device needs to be used, the storage device is first placed on the ship, and then the researchers can take the ship to the designated sampling point, and then put the first water pump 30 into the seawater, and then rotate the nut 16 to make the nut 16 move upward along the screw 15 and disengage from the sealing cover 12 until the nut 16 is disengaged from the screw 15. The nut 16 can drive the connecting plate 17 to move upward to disengage the connecting plate 17 from the sealing cover 12, and then the sealing cover 12 can be taken out from the top of the storage cylinder 3, and then the bottle caps of each sampling bottle are unscrewed, and the sampling bottles are turned upside down on the rotating nozzle 31 in turn. On the upper part, the support rod 28 can support the sampling bottle. At this time, seawater can be extracted by the first water pump 30. The first water pump 30 can transport seawater to the rotating nozzle 31 through the first hose 29. The rotating nozzle 31 can spray seawater on the inner wall of the sampling bottle. Since the water outlet direction of the rotating nozzle 31 is inclined, the reaction force drives it to rotate, so that the inner wall of the sampling bottle can be fully rinsed to ensure the cleanliness of the inner wall of the sampling bottle. Then the cleaned sampling bottles can be placed in each placement frame 4 in turn, and then the stainless steel grab-type gravity mud sampler can be used to obtain sediment samples from the seabed. After the sampling is completed, the sample can be poured into the collecting barrel 7 first, and then the rotating frame 6 can be rotated one hundred and eighty degrees. The rotating frame 6 will squeeze the second circular groove 22 on the left. The second clamping rod 24 moves to the left, the second spring 25 on the left is compressed, and the rotating frame 6 can drive the collecting barrel 7, the vertical pipe 8 and the rubber tube 9 to rotate one hundred and eighty degrees. When the rotating frame 6 rotates one hundred and eighty degrees, the second clamping rod 24 on the right will be just aligned with the second circular groove 22. At this time, the second spring 25 on the right will return to its original state, driving the second clamping rod 24 on the right to move to the left and insert into the second circular groove 22 to limit the rotating frame 6. At this time, the rubber tube 9 is just above one of the sampling bottles. Researchers can rotate the knob on the timer 11 as needed to control the opening time of the solenoid valve 10. When the solenoid valve 10 is opened, the sample in the collecting barrel 7 will fall down through the vertical pipe 8 and the rubber tube 9 into one of the sampling bottles to ensure that the sample will not fall. When the sample falls on the outside of the sampling bottle, the solenoid valve 10 is open, and the knob on the rotary timer 11 will continue to reverse and reset. When the knob on the rotary timer 11 is completely reset, the solenoid valve 10 will automatically close, so that the sample will no longer fall into the sampling bottle, so that the purpose of controlling the amount can be achieved. Then the storage cylinder 3 can be rotated, and the storage cylinder 3 can drive the sampling bottle and the block 18 therein to rotate. The block 18 will squeeze the first card rod 20 to move forward through the first circular groove 1801, and the first spring 21 will be compressed. When the first card rod 20 is aligned with the first circular groove 1801 on the next block 18, the first spring 21 will return to its original state, driving the first card rod 20 to move backward and reset to insert into the first circular groove 1801 on the next block 18 to position the storage cylinder 3.At this time, the next sampling bottle is just below the rubber tube 9. Repeat the above operation to add the sample to the next sampling bottle. When all the sampling bottles are filled with samples, the bottle caps of the sampling bottles can be tightened, and then the sealing cap 12 is placed on the top of the storage cylinder 3 so that each screw 15 can be accurately inserted into the through hole 1201. At this time, each positioning ring 13 can be accurately put on each sampling bottle, so that the sampling bottle can be positioned to prevent the sampling bottle from shaking during transportation. Then put the nut 16 on the upper end of the screw 15 and reverse it. The nut 16 can be screwed along the screw. 15 moves downward, driving the connecting plate 17 downward until the bottoms of the nut 16 and the connecting plate 17 both contact the top of the sealing cover 12, locking the sealing cover 12. The refrigerator 2 is then activated, allowing the refrigerant to circulate within the copper tube 201, cooling the interior of the storage cylinder 3, thereby enabling refrigerated transportation of the samples placed in the storage cylinder 3. Finally, the rotating frame 6 is rotated 180 degrees to reset, driving the rubber tube 9 to rotate above the seawater. The solenoid valve 10 is then opened to discharge the remaining sample in the collection cylinder 7 back into the sea.

[0034] like Figure 10 As shown, it also includes a fixed rod 32, a rotating splint 33, a round rod 34, a rotating sleeve 35 and an electric push rod 36. The front and rear sides of the vertical tube 8 are connected with fixed rods 32, and the rotating splint 33 is symmetrically connected to the left and right between the two fixed rods 32. The upper front parts of the two rotating splints 33 are connected with round rods 34, and the two round rods 34 are rotatably connected with the rotating sleeve 35. The electric push rod 36 is installed on the rotating sleeve 35 on the right, and the telescopic rod of the electric push rod 36 is connected to the rotating sleeve 35 on the left.

[0035] When the solenoid valve 10 is closed, the telescopic rod of the electric push rod 36 is controlled to extend, driving the two rotating sleeves 35 to move away from each other. The rotating sleeve 35 can drive the upper ends of the two rotating splints 33 to move away from each other through the round rod 34, so that the rotating splint 33 rotates on the fixed rod 32. At this time, the lower ends of the two rotating splints 33 will move toward each other, so that the lower ends of the two rotating splints 33 clamp the lower end of the rubber tube 9 to prevent the sample remaining on the inner wall of the vertical tube 8 and the inner wall of the rubber tube 9 from falling into the storage tube 3, thereby preventing the interior of the storage tube 3 from being contaminated. When the solenoid valve 10 is opened, the telescopic rod of the electric push rod 36 is controlled to shorten, so that the lower ends of the two rotating splints 33 can be controlled to move away from each other to release the lower end of the rubber tube 9.

[0036] like Figure 11 As shown, it also includes an air guide plate 37 and a fan 38. A plurality of air guide plates 37 are connected to the middle of the inner bottom of the storage cylinder 3 at circumferential intervals, and the air guide plates 37 are located on the inner side of the copper tube 201. A fan 38 is installed between the tops of the plurality of air guide plates 37.

[0037] When the samples are being transported in cold storage, the fan 38 can be started. The fan 38 can draw air above it and blow it downward, thereby promoting the air flow inside the storage tube 3. Moreover, under the guidance of the air guide plate 37, the air blown downward by the fan 38 will pass through the copper tube 201, so that the copper tube 201 can fully cool the air inside the storage tube 3.

[0038] like Figure 12 As shown, it also includes a hollow plate 39, a second hose 40, a second water pump 41 and an annular nozzle 42. The hollow plate 39 is connected to the upper left side of the collecting barrel 7, and the second hose 40 is connected to the bottom of the hollow plate 39 and remains connected. A second water pump 41 is provided below the second hose 40, and the water outlet of the second water pump 41 is connected to the lower end of the second hose 40 and remains connected. An annular nozzle 42 is installed on the upper inner wall of the collecting barrel 7, and the annular nozzle 42 is connected to the hollow plate 39 and remains connected.

[0039] When the remaining samples in the collecting barrel 7 are discharged back into the sea, the second water pump 41 can be placed in the seawater. The seawater can be extracted by the second water pump 41, and the second water pump 41 can transport the seawater to the annular nozzle 42 through the second hose 40 and the hollow plate 39. The annular nozzle 42 can spray the seawater on the inner wall of the collecting barrel 7 to automatically clean the inner wall of the collecting barrel 7, and the wastewater is directly discharged back into the sea.

Claims

1. A sample storage device for environmental testing, comprising: a housing (1); characterized in that: A refrigerator (2) is installed inside the housing (1); a copper tube (201) is connected to the top of the refrigerator (2); a storage cylinder (3) is rotatably connected to the inside of the housing (1), and the storage cylinder (3) is located above the refrigerator (2), and the copper tube (201) passes through the middle of the storage cylinder (3); a placement frame (4) is connected to the inside of the storage cylinder (3) at circumferential intervals; a fixed sleeve (5) is connected to the outer wall of the housing (1); a rotating frame (6) is rotatably connected to the inside of the fixed sleeve (5); a collecting cylinder (7) is connected to the rotating frame (6 ); a vertical pipe (8), connected to the bottom of the collecting barrel (7) and kept in communication; a rubber tube (9), connected to the bottom of the vertical pipe (8) and kept in communication; a solenoid valve (10), installed on the vertical pipe (8); a timer (11), installed on the outer wall of the collecting barrel (7); a sealing component, arranged on the housing (1), for sealing the storage barrel (3); a positioning component, arranged on the housing (1), for positioning the storage barrel (3); a cleaning component, arranged on the housing (1), for cleaning the sampling bottle.

2. The sample storage device for environmental testing according to claim 1, characterized in that: The sealing assembly comprises: a sealing cover (12), which is placed on the top of the storage cylinder (3), and the sealing cover (12) is symmetrically provided with through holes (1201); a positioning ring (13), which is connected to the inside of the sealing cover (12) at circumferential intervals; a connecting sleeve (14), which is symmetrically connected to the outer wall of the storage cylinder (3); a screw (15), which is connected to the inside of the connecting sleeve (14); a nut (16), which is threadedly connected to the screw (15); and a connecting plate (17), which is connected to the outer wall of the nut (16), and the bottom of the connecting plate (17) is in contact with the top of the sealing cover (12).

3. The sample storage device for environmental testing according to claim 1, characterized in that: The positioning assembly comprises: a block (18) connected to the outer wall of the storage cylinder (3) at circumferential intervals, and a first circular groove (1801) is opened on the side of the block (18); a first fixing frame (19) connected to the outer wall of the shell (1); a first clamping rod (20) slidably connected to the first fixing frame (19), and the end of the first clamping rod (20) is located in one of the first circular grooves (1801); a first spring (21) connecting the first fixing frame (19) and the first clamping rod (20); and a limiting mechanism provided on the fixing sleeve (5) for limiting the rotating frame (6).

4. The sample storage device for environmental testing according to claim 3, characterized in that: The limiting mechanism includes: a second fixing frame (23) symmetrically connected to the outer wall of the fixing sleeve (5); a second clamping rod (24) slidably connected to the second fixing frame (23), and a second circular groove (22) is opened on the rotating frame (6), wherein an end of one of the second clamping rods (24) is located in the second circular groove (22); and a second spring (25) connecting the second fixing frame (23) and the second clamping rod (24).

5. The sample storage device for environmental testing according to claim 1, characterized in that: The cleaning assembly comprises: a mounting frame (26) connected to the outer wall of the housing (1); a conical block (27) connected to the mounting frame (26); a support rod (28) connected to the conical block (27) at circumferential intervals; a first hose (29) connected to the conical block (27); a first water pump (30) arranged below the first hose (29), and a water outlet of the first water pump (30) connected to and maintained in communication with the lower end of the first hose (29); and a rotating nozzle (31) rotatably mounted on the upper end of the first hose (29).

6. The sample storage device for environmental testing according to claim 1, characterized in that: The utility model further comprises: a fixed rod (32) symmetrically connected to the outer wall of the vertical tube (8); a rotating splint (33) symmetrically connected to the fixed rod (32); a round rod (34) connected to the side of the rotating splint (33); a rotating sleeve (35) rotatably connected to the round rod (34); and an electric push rod (36) installed on one of the rotating sleeves (35), and a telescopic rod of the electric push rod (36) is connected to the other rotating sleeve (35).

7. The sample storage device for environmental testing according to claim 1, characterized in that: It also includes: an air guide plate (37) connected to the bottom of the storage cylinder (3) at circumferential intervals, and the air guide plate (37) is located inside the copper tube (201); and a fan (38) installed on the top of the air guide plate (37).

8. The sample storage device for environmental testing according to claim 1, characterized in that: The apparatus further comprises: a hollow plate (39) connected to the outer wall of the collecting barrel (7); a second hose (40) connected to the bottom of the hollow plate (39) and maintained in communication; a second water pump (41) arranged below the second hose (40), and the water outlet of the second water pump (41) is connected to the lower end of the second hose (40) and maintained in communication; an annular nozzle (42) installed on the inner wall of the collecting barrel (7), and the annular nozzle (42) is connected to the hollow plate (39) and maintained in communication.

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