Sampling device for water environment monitoring

Abstract

The utility model relates to a sampling device for water environment monitoring, which belongs to the field of sampling devices and comprises a cart, a vertical frame fixed on the cart, an electric push rod fixed on the vertical frame, a mounting box fixed on the electric push rod, a rope wound in the mounting box and a winding and unwinding assembly arranged in the mounting box. A collecting device is fixed at the free end of the rope and comprises an outer box; the pressure release valve is fixed on the outer box; the sampling box is positioned in the outer box; the water inlet pump is connected with a water inlet pipe; the water outlet pump is mounted on the inner wall of the outer box, and the water outlet pump is connected and communicated with the sampling box through a water drawing pipe; a water outlet pipe is fixed to the water outlet pump, and the end of the water outlet pipe faces the end of the water inlet pipe. A first electromagnetic valve is mounted on the water inlet pipe; a second electromagnetic valve is mounted on the water outlet pipe; the flow of the water inlet pump is greater than that of the water outlet pump; a filter screen is mounted at the end of the water outlet pipe. The sampling device can impact sundries accumulated at the end part of the water inlet pipe and prevent the filter screen from being blocked.

Description

Technical Field

[0001] The utility model belongs to the technical field of sampling equipment, and in particular relates to a sampling device for water environment monitoring. Background Art

[0002] Water sampling is one of the means of hydrological monitoring.

[0003] The Chinese patent with the authorization announcement number CN211904791U discloses a sampling device for water environment monitoring. In the patent, a water sampling box with an open opening is lowered by unwinding through a winding roller, so that after the water sampling box enters below the water surface, the water sampling box is filled with water. Then the water sampling box is lifted up from below the water surface by the unwinding roller to complete the sampling work. The defect of this patent is that the water sampling box can only collect water on the water surface. In order to overcome this simple defect, the most common way is to design the water sampling box into a closed box, install a water pump in the box, and the water inlet pipe of the water pump extends out of the water sampling box, and use the water pump to suck the water outside the water sampling box into the water sampling box. In this way, after the sampling box descends to a predetermined water depth, water can be collected by the water pump. Before the water sampling box reaches the predetermined depth, the water pump does not absorb water. The purpose of fixed depth sampling is achieved.

[0004] However, the above situation also has the following problems: because water is sampled at different depths of the water surface, especially when sampling close to the bottom of the water, the algae are more densely distributed at the bottom of the water, so the algae can easily clog the water inlet pipe of the water pump, resulting in sampling failure. Utility Model Content

[0005] The utility model provides a sampling device for water environment monitoring, which can solve the problem of water inlet pipe blockage.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a sampling device for water environment monitoring, comprising a cart, a vertical frame is fixed on the cart, an electric push rod is fixed on the vertical frame, a non-telescopic end of the electric push rod is fixed on the vertical frame, a mounting box is fixed on the telescopic end of the electric push rod, and the electric push rod can extend the mounting box above the water surface; a rope is wound in the mounting box, the free end of the rope passes through the lower surface wall of the mounting box, and a winding and unwinding assembly for winding and unwinding the rope is provided in the mounting box; a collection device is fixed on the free end of the rope, and the collection device comprises: an outer box fixed on the free end of the rope; a pressure relief valve for balancing the air pressure inside the outer box and outside the outer box, Fixed on the outer box; a sampling box is in the outer box, and a through hole connected to the inside of the outer box is opened on the sampling box; an inlet pump, the water outlet end of the inlet pump is connected to the sampling box, the water inlet end of the inlet pump is connected with an inlet pipe, and the inlet pipe passes through the outer box; an outlet pump is installed on the inner wall of the outer box, the water inlet end of the outlet pump is connected and connected to the sampling box through a water suction pipe; an outlet pipe is fixed to the outlet end of the outlet pump, and the end of the outlet pipe faces the end of the inlet pipe; a first solenoid valve is installed on the inlet pipe; a second solenoid valve is installed on the outlet pipe; the flow rate of the inlet pump is greater than the flow rate of the outlet pump; a filter is installed at the end of the outlet pipe.

[0007] Furthermore, the rewinding and unwinding assembly includes: a rotating rod, rotatably connected to two opposite inner walls of the installation box; a rewinding and unwinding roller, sleeved on the rotating rod and fixedly connected to the rotating rod; a driven gear, sleeved on the rotating rod and fixedly connected to the rotating rod; a motor, installed on the inner wall of the installation box; a driving gear, sleeved on the rotating shaft of the motor and fixedly connected to the rotating shaft of the motor; and a chain, sleeved on the driving gear and the driven gear at the same time, and meshing with the driving gear and the driven gear at the same time.

[0008] The rope can be automatically reeled and unreeled on the reeling and winding assembly, thereby realizing the lifting and lowering of the free end of the rope.

[0009] Furthermore, a pressure relief valve is provided on the outer box.

[0010] As the amount of water in the sampling box increases, the air pressure in the sampling box and the outer box will certainly increase. If a pressure relief valve is not set, the increased air pressure will add a lot of resistance to the water inlet pump pumping water from the outside of the outer box into the sampling box. When a pressure relief valve is set, the air pressure in the outer box can be kept constant at an exact value, and the water inlet pump only needs to keep overcoming this air pressure to pump water, and the water inlet pump's ability to pump water will not become weaker and weaker due to the lack of a pressure relief valve.

[0011] Furthermore, the outer box is provided with a first through-hole for the water inlet pipe to pass through, a first sealing ring for sealing the first through-hole is provided at the first through-hole, and the first sealing ring is sleeved on the outer wall of the water inlet pipe; the outer box is provided with a second through-hole for the water outlet pipe to pass through, a second sealing ring for sealing the second through-hole is provided at the second through-hole, and the second sealing ring is sleeved on the outer wall of the water outlet pipe.

[0012] The first sealing ring and the second sealing ring can ensure the sealing of the first perforation and the second perforation, thereby preventing external water from entering the outer box due to water leakage from the first perforation and the second perforation.

[0013] Furthermore, one end of the water-drawing pipe away from the water outlet pump extends into the inner bottom of the sampling box.

[0014] The water suction pipe is arranged at the inner bottom of the sampling box, so that the outlet pump can pump water when there is a small amount of water in the sampling box, thereby ensuring that when the inlet pump is working, the outlet pump can also participate in the work in time.

[0015] Beneficial Effects

[0016] An outlet water pump is provided, which draws water from the sampling box to impact the end of the water inlet pipe, thereby impacting the debris blocking the end of the water inlet pipe, thereby achieving the purpose of preventing the debris from clogging the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the device;

[0018] Figure 2 It is a schematic diagram of the structure of the reel-in and reel-out assembly inside the installation box;

[0019] Figure 3 It is a structural diagram of the collection device.

[0020] 1. Cart; 2. Vertical frame; 3. Electric push rod; 4. Installation box; 5. Reel assembly; 51. Rotating rod; 52. Reel roller; 53. Driven gear; 54. Motor; 55. Driving gear; 56. Chain; 57. Rope; 6. Collection device; 61. Outer box; 62. Pressure relief valve; 63. Sampling box; 64. Inlet pump; 65. Inlet pipe; 66. First solenoid valve; 67. Outlet pump; 68. Outlet pipe; 69. Second solenoid valve; 7. Water drawing pipe; 8. First sealing ring; 9. Second sealing ring; 10. Filter; 11. Through hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0022] See Figure 1 A sampling device for water environment monitoring includes a cart 1. A vertical frame 2 is fixed on the cart 1, and the vertical frame 2 is arranged vertically. An electric push rod 3 is installed on the vertical frame 2, and the axis of the electric push rod 3 is arranged horizontally. The non-telescopic end of the electric push rod 3 is fixed on the vertical frame 2, and a mounting box 4 is fixed on the telescopic end of the electric push rod 3.

[0023] See Figure 2 The installation box 4 is provided with a reel assembly 5, and the reel assembly 5 includes:

[0024] The rotating rod 51 is rotatably connected to the two opposite inner walls of the installation box 4. In this embodiment, the axis of the rotating rod 51 is horizontally arranged, and the axis of the rotating rod 51 is perpendicular to Figure 2 Paper.

[0025] The retractable roller 52 is sleeved on the rotating rod 51 , and the retractable roller 52 is fixedly connected to the rotating rod 51 ; the axis of the retractable roller 52 coincides with the axis of the rotating rod 51 .

[0026] The driven gear 53 is sleeved on the rotating rod 51 . The driven gear 53 is fixedly connected to the rotating rod 51 . The axis of the driven gear 53 coincides with the axis of the rotating rod 51 .

[0027] The motor 54 is fixedly mounted on the inner wall of the mounting box 4 .

[0028] The driving gear 55 is sleeved on the rotating shaft of the motor 54 and fixedly connected to the rotating shaft of the motor 54 ; the axis of the driving gear 55 coincides with the axis of the rotating shaft of the motor 54 .

[0029] The chain 56 is simultaneously mounted on the driving gear 55 and the driven gear 53, and meshes with the driving gear 55 and the driven gear 53. The rotating shaft of the motor 54 drives the retracting roller 52 to rotate through the driving gear 55, the chain 56, and the driven gear 53.

[0030] Rope 57 is wound on the retractable roller 52, and the free end of rope 57 passes through the lower surface wall of installation box 4. The reeling and unreeling of rope are realized by the rotation of retractable roller 52, so that the free end of rope 57 rises and falls.

[0031] The free end of the rope 57 is provided with a collecting device 6, which is used for sampling. The lifting and lowering of the free end of the rope 57 realizes the lifting and lowering of the collecting device 6. Figure 3 , the collection device 6 comprises:

[0032] The outer box 61 is fixedly connected to the free end of the rope 57. In this embodiment, the outer box 61 is a cylindrical box, and the straight line where the free end of the rope 57 is located coincides with the axis of the outer box 61.

[0033] The pressure relief hole is provided at the upper end of the outer box 61. A pressure relief valve 62 is installed on the pressure relief hole, and the pressure relief valve 62 is a one-way valve. It is used to automatically exhaust air to the outside when the air pressure in the outer box 61 is too high.

[0034] The sampling box 63 is fixed in the outer box 61. A through hole 11 is provided on the sampling box 63. The interior of the sampling box 63 is connected with the interior of the outer box 61 through the through hole 11. The through hole 11 is used to ensure that the air pressure inside the sampling box 63 and the outer box 61 is equal.

[0035] The water inlet pump 64 is installed on the inner wall of the outer box 61. The water outlet end of the water inlet pump 64 is fixedly connected to the outer box 61, and the water outlet end of the water inlet pump 64 is communicated with the inside of the outer box 61.

[0036] One end of the water inlet pipe 65 is fixedly connected to the water inlet end of the water inlet pump 64, and the end of the water inlet pipe 65 is connected to the water inlet end of the water inlet pump 64, and the other end passes through the outer box 61. The outer box 61 is provided with a first perforation for the water inlet pipe 65 to pass through, and the outer wall of the water inlet pipe 65 is sleeved with a first sealing ring 8, and the first sealing ring 8 is clamped on the inner wall of the first perforation. A filter screen 10 is installed at one end of the water inlet pipe 65 away from the water inlet pump 64. A first solenoid valve 66 is installed on the water inlet pipe 65 to control the on and off of the water inlet pipe 65. A controller is installed inside the outer box 61, and the controller is equipped with a 5G module. The 5G module can be connected to the ground terminal, and the ground terminal sends a control signal to the controller through the 5G module. The controller is electrically connected to the first solenoid valve 66.

[0037] The outlet water pump 67 is installed on the inner wall of the outer box 61. The water inlet end of the outlet water pump 67 is fixedly connected with the water pumping pipe 7, and the water inlet end of the outlet water pump 67 is connected with the water pumping pipe 7. The water pumping pipe 7 is "L" shaped, and the end of the water pumping pipe 7 away from the outlet water pump 67 is located at the inner bottom of the sampling box 63. The flow rate of the outlet water pump 67 is less than the flow rate of the inlet water pump 64. The outlet water pump 67 is electrically connected to the controller.

[0038] The water outlet pipe 68 is installed at the water outlet end of the water outlet pump 67, and the water outlet pipe 68 is connected to the water outlet end of the water outlet pump 67. The water outlet pipe 68 passes through the outer box 61, and the outer box 61 is provided with a second perforation for the water outlet pipe 68 to pass through. The outer wall of the water outlet pipe 68 is sleeved with a second sealing ring 9, and the second sealing ring 9 is clamped on the inner wall of the second perforation. The water outlet pipe 68 is "L-shaped", and the end of the water outlet pipe 68 away from the water outlet pump 67 is toward the end of the water inlet pipe 65 away from the water inlet pump 64. A second solenoid valve 69 is installed on the water outlet pipe 68 to control the opening and closing of the water outlet pipe 68, and the second solenoid valve 69 is electrically connected to the controller. All of the above electrical components are powered by batteries.

[0039] Usage process:

[0040] S1: First, push the cart 1 to the shore of the water area where sampling is required, and manually energize the electric push rod 3. The electric push rod 3 extends to a certain length and then stops until the installation box 4 and the outer box 61 are both directly above the water surface.

[0041] S2: Then, the motor 54 is manually turned on. The wire of the motor 54 passes through the installation box 4 and extends to the shore, so the operator can directly turn on the power. The motor 54 is powered on to unwind the reel 52. Since the water inlet pump 64 and the water outlet pump 67 inside the sampling box 63 have weight, and the weight is greater than the buoyancy of the sampling box 63, the sampling box 63 can sink into the water. In this step, the first solenoid valve 66 and the second solenoid valve 69 are both closed. Water will not naturally enter the outer box 61 and the sampling box 63.

[0042] S3: Observe the unwinding length with naked eyes, estimate the depth of the outer box 61 to be sampled, and then turn off the motor 54. At this time, the operator operates the terminal wirelessly to send control instructions to the controller through the 5G module. According to the instructions, the controller simultaneously opens the first solenoid valve 66, the second solenoid valve 69, the water inlet pump 64 and the water outlet pump 67.

[0043] S4: The water inlet pump 64 draws water from the outside of the outer box 61 into the sampling box 63; the water outlet pump 67 draws water from the sampling box 63 out of the outer box 61, and because the water outlet pipe 68 on the water outlet pump 67 is facing the end of the water inlet pipe 65, the water flowing out of the water outlet pipe 68 will blow the debris accumulated at the end of the water inlet pipe 65 away from the end of the water inlet pipe 65, preventing the filter 10 at the end of the water inlet pipe 65 from being blocked.

[0044] The reason why the outlet water pump 67 is led to the water source in the sampling box 63 instead of the outlet water pump 67 directly leading to the water source outside the outer box 61 is because the water source in the sampling box 63 is filtered, and there are no impurities in the water that will not clog the water inlet of the outlet water pump. If the water source outside the outer box 67 is directly led, the water inlet of the outlet water pump 67 will easily be clogged by impurities again.

[0045] Since the flow rate of the water inlet pump 64 is greater than that of the water outlet pump 67, as time goes by, after a certain period of time, water can still be collected in the sampling box 63. Because the pressure in the outer box 61 and the sampling box 63 increases, the outer box 61 will be naturally exhausted through the pressure relief valve 62.

[0046] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A sampling device for water environment monitoring, characterized in that: The invention comprises a cart (1), a vertical frame (2) is fixed on the cart (1), an electric push rod (3) is fixed on the vertical frame (2), a non-telescopic end of the electric push rod (3) is fixed on the vertical frame (2), a mounting box (4) is fixed on the telescopic end of the electric push rod (3), the electric push rod (3) can extend the mounting box (4) above the water surface, a rope (57) is wound in the mounting box (4), a free end of the rope (57) passes through the lower surface wall of the mounting box (4), and a reeling and unreeling assembly (5) for reeling and unreeling the rope (57) is provided in the mounting box (4); A collection device (6) is fixed to the free end of the rope (57), and the collection device (6) comprises: An outer box (61) is fixed to the free end of the rope (57); A sampling box (63) is located in the outer box (61), and a through hole is provided on the sampling box (63) and communicates with the interior of the outer box (61); A water inlet pump (64) is installed on the inner wall of the outer box (61), the water outlet end of the water inlet pump (64) is connected to the sampling box (63), the water inlet end of the water inlet pump (64) is connected to a water inlet pipe (65), and the water inlet pipe (65) passes through the outer box (61); The outlet water pump (67) is installed on the inner wall of the outer box (61), and the water inlet end of the outlet water pump (67) is connected and communicated with the sampling box (63) through a water pumping pipe (7); the outlet water pump (67) is fixed with an outlet water pipe (68), the end of the outlet water pipe (68) away from the outlet water pump passes through the outer box (61), and the end of the outlet water pipe (68) faces the end of the inlet water pipe (65); the inlet water pipe (65) is installed with a first solenoid valve (66); the outlet water pipe (68) is installed with a second solenoid valve (69); the flow rate of the inlet water pump (64) is greater than the flow rate of the outlet water pump (67); and the end of the outlet water pipe (68) is installed with a filter (10).

2. A sampling device for water environment monitoring according to claim 1, characterized in that: The reeling and unreeling assembly (5) comprises: A rotating rod (51) is rotatably connected to two opposite inner walls of the installation box (4); The retractable roller (52) is sleeved on the rotating rod (51) and fixedly connected to the rotating rod (51); A driven gear (53) is sleeved on the rotating rod (51) and fixedly connected to the rotating rod (51); A motor (54) is mounted on the inner wall of the mounting box (4); A driving gear (55) is sleeved on the rotating shaft of the motor (54) and fixedly connected to the rotating shaft of the motor (54); The chain (56) is simultaneously sleeved on the driving gear (55) and the driven gear (53), and is simultaneously meshed with the driving gear (55) and the driven gear (53).

3. A sampling device for water environment monitoring according to claim 1, characterized in that: The outer box (61) is provided with a pressure relief valve (62).

4. A sampling device for water environment monitoring according to claim 1, characterized in that: The outer box (61) is provided with a first through hole for the water inlet pipe (65) to pass through, and a first sealing ring (8) for sealing the first through hole is provided at the first through hole, the first sealing ring (8) is sleeved on the outer wall of the water inlet pipe (65), and the first sealing ring (8) is clamped on the inner wall of the first through hole; the outer box (61) is provided with a second through hole for the water outlet pipe (68) to pass through, and a second sealing ring (9) for sealing the second through hole is provided at the second through hole, the second sealing ring (9) is sleeved on the outer wall of the water outlet pipe (68), and the second sealing ring (9) is clamped on the inner wall of the second through hole.

5. A sampling device for water environment monitoring according to claim 1, characterized in that: One end of the water-drawing pipe (7) away from the water outlet pump (67) extends into the inner bottom of the sampling box (63).

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