Water sample collecting device

Abstract

The utility model relates to the technical field of water sample collection, in particular to a water sample collection device which comprises a sampling barrel, a water inlet pipe and a water drainage pipe are arranged at the bottom of the sampling barrel, a first one-way valve is mounted at a port of the water inlet pipe, a second one-way valve is mounted at a port of the water drainage pipe, and a sampling pipe is mounted on the water inlet pipe. A driving cabin is arranged at the top of the sampling barrel, a sliding rod is arranged in the sampling barrel, a piston matched with the sampling barrel is arranged at the bottom of the sliding rod, a fixing plate is fixedly arranged in the middle of the sliding rod, the sliding rod penetrates through the top of the sampling barrel and extends into the driving cabin, and a spring is arranged on the sliding rod between the fixing plate and the top of the sampling barrel in a sleeving manner; a tooth groove is formed in the side face of the upper middle portion of the sliding rod, a driving wheel is arranged in the driving cabin, teeth matched with the tooth groove are arranged on the driving wheel, and a crank connected with the driving wheel is arranged outside the driving cabin.

Description

Technical Field

[0001] The utility model relates to the technical field of water sample collection, in particular to a water sample collection device. Background Art

[0002] With the progress of society, people's awareness of environmental protection is increasing. Our country attaches great importance to waste utilization, resource conservation and many other aspects. Among them, the protection of water resources is the top priority at present. The protection of water resources is fundamental. The treatment of sewage is to enable water resources to be better protected. In the actual sewage monitoring operation, it is necessary to sample and inspect sewage.

[0003] A Chinese patent with authorization announcement number "CN 220270888 U" discloses a water sample collection gun. By pulling the connecting ring, the linkage rod can be driven to rotate, and the rotation of the linkage rod can drive the round tube to rotate. At this time, the sliding rod slides in the round tube, and at the same time, the connecting shaft is pulled to drive the connecting plate to pull the reset spring. At this time, the corresponding piston rod is also pulled, and the piston rod drives the piston circular plate to move. The movement of the piston circular plate can form a negative pressure inside the sleeve, thereby achieving a better water absorption function.

[0004] However, the above scheme requires the use of a longer suction hose when sucking water from deeper depths. The negative pressure generated by pulling the connecting ring once is not enough to draw out the water. The operator is required to repeatedly pull the connecting ring, which will produce a heavy load on the operator's fingers. For work that requires collecting sewage samples from multiple locations, the labor intensity of the operator is greatly increased, and the connecting ring will cause damage to the operator's hand muscles, resulting in reduced efficiency in sewage sampling. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a water sample collection device. The crank drives the driving wheel to rotate, and the toothed section on the driving wheel can drive the sliding rod to move upward, and the spring can drive the sliding rod to move downward and reset when the toothless section contacts the sliding rod, thereby realizing that the sliding rod drives the piston to move up and down. Combined with the functions of the first one-way valve and the second one-way valve, the water sample collection work can be completed when the crank continues to rotate.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A water sample collection device comprises a sampling cylinder, a water inlet pipe and a drain pipe are arranged at the bottom of the sampling cylinder, a first one-way valve is installed at the port of the water inlet pipe, a second one-way valve is installed at the port of the drain pipe, a sampling tube is installed on the water inlet pipe, a driving cabin is arranged at the top of the sampling cylinder, a sliding rod is arranged inside the sampling cylinder, a piston adapted to the sampling cylinder is arranged at the bottom of the sliding rod, a fixing plate is fixedly arranged in the middle of the sliding rod, the sliding rod passes through the top of the sampling cylinder and extends into the driving cabin, a spring is sleeved on the sliding rod between the fixing plate and the top of the sampling cylinder, a tooth groove is opened on the side surface of the middle and upper part of the sliding rod, a driving wheel is arranged inside the driving cabin, teeth adapted to the tooth groove are arranged on the driving wheel, and a crank connected to the driving wheel is arranged outside the driving cabin.

[0008] Preferably, the driving wheel comprises a toothed segment and a toothless segment, the total length of the toothed segment and the toothless segment is the circumference of the driving wheel, the length of the toothed segment is three times the length of the toothless segment, and the length of the teeth is the same as the length of the tooth groove.

[0009] Preferably, the sliding rod is eccentrically arranged inside the sampling tube, the outer edge of the piston abuts against the inner wall of the sampling tube, and a sealing strip is arranged on the outer edge of the piston.

[0010] Preferably, the driving cabin is detachably mounted on the top of the sampling cylinder, and a through hole is provided on the top of the driving cabin, and the size of the through hole is adapted to the sliding rod.

[0011] Preferably, a butt joint is provided at one end of the sampling tube, and a filter screen is provided at the other end of the sampling tube, and the inner diameter of the butt joint is matched with the outer diameter of the water inlet pipe.

[0012] Preferably, a detachable top cover is provided on the top of the sampling tube, the top cover is connected to the top of the sampling tube via threads, and a handle is provided on the outer side of the middle part of the sampling tube.

[0013] Preferably, the filter screen cover is provided with filter holes, the filter screen cover is made of stainless steel, and the sampling tube is made of soft rubber material.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model has a simple structure. The crank drives the driving wheel to rotate, and the toothed section on the driving wheel can drive the slide bar to move upward. When the toothless section contacts the slide bar, the spring can drive the slide bar to move downward and reset, thereby realizing that the slide bar drives the piston to move up and down. Combined with the functions of the first one-way valve and the second one-way valve, the water sample collection work can be completed when the crank continues to rotate.

[0016] 2. The bottom of the slide rod of the device is eccentrically arranged with the piston, and the upper end of the slide rod passes through the top of the sampling tube and is eccentrically arranged. The piston and the top of the sampling tube cooperate with each other to limit the slide rod and prevent the slide rod from rotating inside the sampling tube, resulting in the inability of the tooth groove to cooperate with the toothed segment.

[0017] 3. The detachable drive cabin in the device can realize the repair and maintenance of the drive wheel, ensure the normal use of the device, and increase the service life of the device. At the same time, a through hole is set on the top of the drive cabin to facilitate the passage of the slide bar when moving upward, thereby reducing the size of the drive cabin and realizing the up and down movement of the slide bar. Reducing the size of the drive cabin can reduce the volume of the device and facilitate the storage of the device.

[0018] 4. The docking pipe of the device can realize the docking work between the water suction pipe and the water inlet pipe, so that water suction pipes of different lengths can be connected to the water inlet pipe. At the same time, after the water sample is extracted, the negative pressure inside the sampling tube can be avoided to cause residual water in the water suction pipe. By opening the docking pipe, the water suction pipe and the water inlet pipe can be separated to ensure that the water in the water suction pipe returns to the sewage pool, avoiding sewage flowing to the outside of the sewage pool and polluting the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the sampling device;

[0021] Figure 3 Cross-section of the sampling device Figure 1 ;

[0022] Figure 4 Cross-section of the sampling device Figure 2 .

[0023] In the figure: 1. sampling cylinder; 2. water inlet pipe; 3. drain pipe; 4. sampling tube; 5. filter screen; 6. drive cabin; 7. handle; 8. crank; 9. piston; 10. slide rod; 11. fixing plate; 12. spring; 13. tooth groove; 14. driving wheel; 15. teeth; 16. docking tube; 17. first one-way valve; 18. second one-way valve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] A water sample collection device, the structure of which is as follows Figure 1-Figure 4 As shown, it includes a sampling cylinder 1, a water inlet pipe 2 and a drain pipe 3 are arranged at the bottom of the sampling cylinder 1, a first one-way valve 17 is installed at the port of the water inlet pipe 2, a second one-way valve 18 is installed at the port of the drain pipe 3, a sampling tube 4 is installed on the water inlet pipe 2, a driving cabin 6 is arranged at the top of the sampling cylinder 1, a sliding rod 10 is arranged inside the sampling cylinder 1, a piston 9 adapted to the sampling cylinder 1 is arranged at the bottom of the sliding rod 10, a fixing plate 11 is fixedly arranged in the middle of the sliding rod 10, the sliding rod 10 passes through the top of the sampling cylinder 1 and extends into the driving cabin 6, a spring 12 is sleeved on the sliding rod 10 between the fixing plate 11 and the top of the sampling cylinder 1, a tooth groove 13 is opened on the side of the upper and middle part of the sliding rod 10, a driving wheel 14 is arranged inside the driving cabin 6, and teeth 15 adapted to the tooth groove 13 are arranged on the driving wheel 14, and a crank 8 connected to the driving wheel 14 is arranged outside the driving cabin 6. The driving wheel 14 includes a segment with teeth 15 and a segment without teeth 15, the total length of the segment with teeth 15 and the segment without teeth 15 is the circumference of the driving wheel 14, the length of the segment with teeth 15 is three times the length of the segment without teeth 15, and the length of the teeth 15 is the same as the length of the tooth groove 13.

[0027] A second one-way valve 18 is provided at the drain pipe 3 to prevent external gas from entering the sampling tube 1 from the drain pipe 3, and a first one-way valve 17 is provided at the water inlet pipe 2 to prevent the medium inside the sampling tube 1 from flowing back from the water inlet pipe 2;

[0028] One end of the sampling tube 4 is placed into the water body to be sampled, and the operator drives the driving wheel 14 to rotate by turning the crank 8. Since the driving wheel 14 is provided with teeth 15, and the teeth 15 divide the driving wheel 14 into a toothed 15 section and a non-toothed 15 section, when the driving wheel 14 rotates, the length of the toothed 15 section is greater than the length of the non-toothed 15 section, and the length of the toothed 15 section is the same as the length of the tooth groove 13. The teeth 15 can cooperate with the tooth groove 13 during rotation to drive the slide bar 10 to move upward, and the piston 9 is driven to move upward during the upward movement of the slide bar 10. When the driving wheel 14 rotates until the non-toothed 15 section abuts against the tooth groove 13, the slide bar 10 is reset under the action of the spring 12, and the piston 9 moves to the bottom of the sampling tube 1. Due to the action of the first one-way valve 17 and the second one-way valve 18, when the piston 9 moves upward, a negative pressure is formed between the bottom of the sampling tube 1 and the piston 9, and a negative pressure is generated inside the sampling tube 1. When negative pressure is formed, the first one-way valve 17 will be opened due to the negative pressure, and the second one-way valve 18 will be in a closed state, and the gas inside the water pumping pipe will be pumped into the sampling tube 1. Since the bottom of the water pumping pipe is submerged in the water body, when the gas inside the water pumping pipe is pumped into the sampling tube 4, negative pressure is formed inside the water pumping pipe, and the water is pumped into the water pumping pipe. When the piston 9 moves to the bottom of the sampling tube 1, the first one-way valve 17 is closed, and the second one-way valve 18 is opened. The gas inside the sampling tube 1 is discharged through the drain pipe 3. After repeatedly turning the crank 8, the water inside the sampling tube 4 can be pumped into the sampling tube 1. When the sampling tube is discharged to the outside through the drain port, the handle 8 is continuously rotated by the palm of the hand to realize the sampling of the water body. The whole process can reduce the labor intensity of the fingers and reduce the pressure on the hand muscles of the operator, ensuring that the operator can continuously perform water sampling work and improve the efficiency of sewage sampling.

[0029] The driving wheel 14 includes a segment with teeth 15 and a segment without teeth 15, the total length of the segment with teeth 15 and the segment without teeth 15 is the circumference of the driving wheel 14, the length of the segment with teeth 15 is three times the length of the segment without teeth 15, and the length of the teeth 15 is the same as the length of the tooth groove 13.

[0030] The toothed section 15 on the driving wheel 14 can fully cooperate with the tooth groove 13, so that the driving wheel 14 rotates to lift the slide bar 10 to the highest point. When it rotates to the toothless section 15, the slide bar 10 can be quickly reset under the action of the spring 12 to quickly discharge the water inside the sampling tube 1. The length of the toothless section 15 can give the slide bar 10 time to reset downward, thereby facilitating the complete discharge of the water inside the sampling tube 1.

[0031] The slide rod 10 is eccentrically disposed inside the sampling tube 1 , the outer edge of the piston 9 abuts against the inner wall of the sampling tube 1 , and a sealing strip is disposed on the outer edge of the piston 9 .

[0032] The bottom of the slide rod 10 is eccentrically arranged with the piston 9, and the upper end of the slide rod 10 passes through the top of the sampling tube 1 and is eccentrically arranged. The piston 9 and the top of the sampling tube 1 cooperate with each other to limit the slide rod 10 and prevent the slide rod 10 from rotating inside the sampling tube 1, causing the tooth groove 13 to be unable to cooperate with the toothed tooth 15 section; at the same time, the sealing strip on the outer edge of the piston 9 can ensure the sealing of the piston 9 when working, thereby ensuring the water pumping effect.

[0033] The driving cabin 6 is detachably mounted on the top of the sampling tube 1 . A through hole is provided on the top of the driving cabin 6 , and the size of the through hole is adapted to the sliding rod 10 .

[0034] The detachable drive cabin 6 can realize the repair and maintenance of the drive wheel 14, ensure the normal use of the device, and increase the service life of the device. At the same time, a through hole is set on the top of the drive cabin 6 to facilitate the passage of the slide bar 10 when moving upward, thereby reducing the size of the drive cabin 6 and realizing the up and down movement of the slide bar 10. Reducing the size of the drive cabin 6 can reduce the volume of the device, making it easier to store the device.

[0035] A detachable top cover is arranged on the top of the sampling tube 1 , and the top cover is connected to the top of the sampling tube 1 through threads. A handle 7 is arranged on the outer side of the middle part of the sampling tube 1 .

[0036] When the device needs to be repaired and maintained, the drive cabin 6 is removed and the top cover of the sampling tube 1 can be separated from the sampling tube 1 by screwing the top cover, so that the internal slide rod 10, spring 12, fixing plate 11 and piston 9 can be taken out for replacement or repair. The handle 7 is convenient for the operator to hold the body of the device, and the other hand can control the crank 8, which is convenient for the coordination of both hands and improves the practicality of the device.

[0037] The filter screen cover 5 is provided with filter holes, the filter screen cover 5 is made of stainless steel, and the sampling tube 4 is made of soft rubber material.

[0038] In order to avoid the water suction pipe being unable to enter the water body due to the buoyancy of water, the filter screen cover 5 is set to stainless steel material, which can increase the weight of the filter screen cover 5 and ensure that one end of the water suction pipe with the filter screen cover 5 penetrates into the water body to facilitate water extraction. At the same time, the filter screen cover 5 made of stainless steel can avoid rusting and affecting the results of the extracted water samples, and is easy to clean and maintain, thereby increasing the service life of the filter screen cover 5. The sampling tube 4 made of soft rubber material can ensure the bending of the water suction pipe and can be used in more usage scenarios, as well as ensure the efficiency of water pumping.

[0039] Embodiment 2

[0040] On the basis of the first embodiment, a butt joint pipe 16 is provided at one end of the sampling tube 4 , and a filter screen cover 5 is provided at the other end of the sampling tube 4 . The inner diameter of the butt joint pipe 16 is matched with the outer diameter of the water inlet pipe 2 .

[0041] The sampling tube 4 of different lengths can be replaced according to actual needs, and a filter screen 5 is provided at one end of the sampling tube 4, which can filter out larger impurities in the water body to avoid internal blockage of the device. At the same time, the docking tube 16 provided at the end of the water pumping pipe can realize the docking work of the water pumping pipe and the water inlet pipe 2, so that water pumping pipes of different lengths can be connected to the water inlet pipe 2. At the same time, after the water sample is extracted, the negative pressure inside the sampling tube 1 can be avoided to cause residual water in the water pumping pipe. By opening the docking tube 16, the water pumping pipe and the water inlet pipe 2 can be separated, ensuring that the water inside the water pumping pipe returns to the sewage pool, avoiding sewage from flowing to the outside of the sewage pool and polluting the external environment.

[0042] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or additions, subtractions or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A water sample collection device, comprising a sampling tube (1), characterized in that: The bottom of the sampling tube (1) is provided with a water inlet pipe (2) and a drainage pipe (3); the port of the water inlet pipe (2) is installed with a first one-way valve (17); the port of the drainage pipe (3) is installed with a second one-way valve (18); the water inlet pipe (2) is installed with a sampling tube (4); the top of the sampling tube (1) is provided with a driving cabin (6); a sliding rod (10) is provided inside the sampling tube (1); a piston (9) adapted to the sampling tube (1) is provided at the bottom of the sliding rod (10); and a piston (9) is fixedly provided in the middle of the sliding rod (10). A fixing plate (11), the sliding rod (10) passes through the top of the sampling tube (1) and extends into the driving cabin (6), a spring (12) is sleeved on the sliding rod (10) between the fixing plate (11) and the top of the sampling tube (1), a tooth groove (13) is opened on the side of the upper middle part of the sliding rod (10), a driving wheel (14) is arranged inside the driving cabin (6), and teeth (15) matched with the tooth groove (13) are arranged on the driving wheel (14), and a crank (8) connected to the driving wheel (14) is arranged outside the driving cabin (6).

2. A water sample collection device according to claim 1, characterized in that: The driving wheel (14) comprises a toothed tooth (15) section and a toothless tooth (15) section, the total length of the toothed tooth (15) section and the toothless tooth (15) section is equal to the circumference of the driving wheel (14), the length of the toothed tooth (15) section is three times the length of the toothless tooth (15) section, and the length of the tooth (15) is the same as the length of the tooth groove (13).

3. A water sample collection device according to claim 1, characterized in that: The sliding rod (10) is eccentrically arranged inside the sampling tube (1), the outer edge of the piston (9) abuts against the inner wall of the sampling tube (1), and the outer edge of the piston (9) is provided with a sealing strip.

4. A water sample collection device according to claim 1, characterized in that: The driving cabin (6) is detachably mounted on the top of the sampling tube (1); a through hole is provided on the top of the driving cabin (6); the size of the through hole is adapted to the sliding rod (10).

5. A water sample collection device according to claim 1, characterized in that: A butt joint (16) is provided at one end of the sampling tube (4), and a filter screen (5) is provided at the other end of the sampling tube (4); the inner diameter of the butt joint (16) is matched to the outer diameter of the water inlet pipe (2).

6. A water sample collection device according to claim 1, characterized in that: A detachable top cover is arranged on the top of the sampling cylinder (1), and the top cover is connected to the top of the sampling cylinder (1) via a thread. A handle (7) is arranged on the outer side of the middle part of the sampling cylinder (1).

7. A water sample collection device according to claim 5, characterized in that: The filter screen cover (5) is provided with filter holes, the filter screen cover (5) is made of stainless steel, and the sampling tube (4) is made of soft rubber material.

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