A water quality stratified sampling device for deep water areas

Abstract

The utility model discloses a kind of deep water area water quality layered sampling devices, it is related to water quality sampling technical field, and it includes: equipment pedestal, pumping mechanism and hose metering mechanism, the pumping mechanism includes fixedly installed on the peristaltic pump of equipment pedestal upper surface, the hook of being set in the front of equipment pedestal, pumping hose, and the counterweight of being fixed to pumping hose sampling end are set up.The hose metering mechanism includes support frame, metering wheel, motor, track slot, gyro wheel seat, auxiliary wheel and drive assembly, and the support frame is fixedly installed on the front of equipment pedestal by bolt.Compared with prior art, the beneficial effects of the utility model are: hose metering mechanism rotates auxiliary wheel by motor drive, and the annular guide groove of metering wheel bidirectional clamps hose, synchronous real-time feedback rotation, cooperate with adjusting screw dynamic adjustment wheel spacing, effectively reduce deep water area hose depth error of lowering, guarantee layered sampling position accuracy.

Description

Technical Field

[0001] This utility model relates to the field of water quality sampling technology, and in particular to a deep-water stratified water quality sampling device. Background Technology

[0002] Water sampling is a core component of water environment monitoring. Its fundamental purpose is to obtain scientific and accurate water samples to provide a material basis for subsequent analysis.

[0003] Although Chinese patent CN217483930U achieves basic stratification through a motor-driven drum mechanism and a dual-tank system, it suffers from three key technical defects: 1. This device relies on a motor-driven drum to lower and rewind the hose, lacking a real-time depth feedback mechanism, which can easily lead to large errors when sampling in deep water areas; 2. Dead zones in the branched water pipe structure can trap previous samples, affecting the accuracy of the test.

[0004] To address the aforementioned shortcomings, we propose a stratified sampling device for water quality monitoring. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a deep-water water quality stratification sampling device.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solution: a deep water quality stratification sampling device, comprising: an equipment base, a pumping mechanism and a hose metering mechanism; The pumping mechanism includes a peristaltic pump fixedly installed on the upper surface of the equipment base, a hook set on the front of the equipment base, a pumping hose hanging on the hook, and a counterweight fixed to the sampling end of the pumping hose. The hose measuring mechanism includes a support frame, a measuring wheel, a motor, a track groove, a roller seat, an auxiliary wheel, and a drive assembly. The support frame is fixedly installed on the front of the equipment base by bolts, the auxiliary wheel is rotatably installed on the inner top wall of the support frame, and the track groove is opened on the front of the support frame.

[0007] Preferably, the roller seat is slidably fitted into the track groove, and a guide block that is slidably connected to the track groove is fixedly installed on its front side. The measuring wheel is rotatably installed in the roller seat, and an annular guide groove matching the water pumping hose is opened on the surface of the measuring wheel.

[0008] Preferably, the drive assembly includes a threaded hole formed in the bottom wall of the support frame, an adjusting screw threaded into the threaded hole, the upper end of the adjusting screw being rotatably connected to the lower surface of the roller seat, and a knob provided at the lower end of the adjusting screw.

[0009] Preferably, the axis of the measuring wheel and the auxiliary wheel are arranged parallel to each other, and the distance between them is adjusted by a knob.

[0010] Preferably, the counterweight is made of lead.

[0011] Preferably, the water pumping hose is a fluororubber hose with an outer diameter of 8-12mm, an inner diameter of 6-8mm, a working pressure of not less than 0.3MPa, and a stainless steel wire mesh braided on the outside of the water pumping hose.

[0012] Preferably, the outer circumferential surface of the auxiliary wheel is provided with anti-slip texture.

[0013] Preferably, the motor is fixedly mounted on the front of the support frame, and the motor output shaft is connected to the auxiliary wheel shaft end via a coupling.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The hose measuring mechanism is driven by a motor to rotate the auxiliary wheel. Combined with the annular guide groove of the measuring wheel, the hose is clamped in both directions. The rotation amount is fed back synchronously in real time. The wheel spacing is dynamically adjusted with the adjusting screw, which effectively reduces the error of the hose lowering depth in deep water areas and ensures the accuracy of the stratified sampling position. 2. A peristaltic pump is used to directly squeeze the polyurethane water suction hose to generate negative pressure to extract water, eliminating the traditional branched water pipe structure, eliminating the risk of sample residue in dead areas, and ensuring the independence and purity of each sample collection. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an undue limitation. In the drawings: Figure 1 This is a three-dimensional first-view schematic diagram of the present invention; Figure 2 This is a three-dimensional second-view schematic diagram of the present invention; Figure 3 This is a three-dimensional schematic diagram of the flexible metering structure of this utility model; Figure 4 This is a three-dimensional structural diagram of the support frame of this utility model.

[0016] The following are the components listed in the diagram: 10 Equipment base, 20 Peristaltic pump, 21 Hook, 22 Pumping hose, 23 Counterweight, 30 Support frame, 31 Meter wheel, 32 Motor, 33 Track groove, 34 Roller seat, 35 Auxiliary wheel, 36 Guide block, 37 Guide groove, 40 Adjusting screw. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] Please see Figure 1-4 This utility model provides a technical solution: a deep-water water quality stratification sampling device, including: a device base 10, a pumping mechanism and a hose metering mechanism.

[0019] The pumping mechanism includes a peristaltic pump 20 fixedly installed on the upper surface of the equipment base 10, a hook 21 set on the front of the equipment base 10, a pumping hose 22 hanging on the hook 21, and a counterweight 23 fixed to the sampling end of the pumping hose 22. The hook 21 is used to store the pumping hose 22.

[0020] A filter screen can be added to the sampling end of the water pumping hose 22. The water pumping hose 22 is a fluororubber hose with an outer diameter of 8-12mm and an inner diameter of 6-8mm. The working pressure is not less than 0.3MPa. The water pumping hose 22 is braided with stainless steel wire mesh. The counterweight 23 is made of lead material and can assist the water pumping hose 22 to sink quickly.

[0021] The water suction hose 22 is assembled with the peristaltic pump 20. The peristaltic pump 20 generates negative pressure by squeezing the water suction hose 22 through rollers to drive the water flow to extract water at a constant flow rate. Periodic sample collection is achieved through time control. The counterweight 23 is used to accelerate the sinking of the sampling end of the water suction hose 22. There is no stainless steel wire mesh at the assembly end of the water suction hose 22 and the peristaltic pump 20.

[0022] The hose measuring mechanism includes a support frame 30, a measuring wheel 31, a motor 32, a track groove 33, a roller seat 34, an auxiliary wheel 35, and a drive assembly. The support frame 30 is fixedly installed on the front of the equipment base 10 by bolts. The bolt fixing of the support frame 30 to the equipment base 10 provides rigid support. The auxiliary wheel 35 is rotatably installed on the inner top wall of the support frame 30. The motor 32 is fixedly installed on the front of the support frame 30, and the output shaft of the motor 32 is connected to the shaft end of the auxiliary wheel 35 through a coupling. The outer circumferential surface of the auxiliary wheel 35 is provided with anti-slip texture. The motor 32 directly drives the auxiliary wheel 35 to rotate through the coupling. The anti-slip texture on its outer circumferential surface ensures synchronous movement with the water pumping hose 22.

[0023] The track groove 33 is formed on the front of the support frame 30. The roller seat 34 is slidably fitted in the track groove 33. A guide block 36 is fixedly installed on its front side and slidably connected to the track groove 33. The guide block 36 ensures that the roller seat 34 slides linearly in the track groove 33 without shaking.

[0024] The measuring wheel 31 is rotatably mounted in the roller seat 34. The surface of the measuring wheel 31 is provided with an annular guide groove 37 that matches the water pumping hose 22 to prevent deviation during operation. The measuring wheel 31 is connected to an encoder to display data in real time. This technology is existing technology and will not be described in detail. The motor 32 is started (speed 30r / min), and the encoder records the number of rotations of the measuring wheel 31. The real-time depth is calculated according to the formula: depth = π × measuring wheel diameter × number of rotations.

[0025] The drive assembly includes a threaded hole in the inner bottom wall of the support frame 30, an adjusting screw 40 threaded into the threaded hole, the upper end of the adjusting screw 40 being rotatably connected to the lower surface of the roller seat 34, and a knob at the lower end of the adjusting screw 40. The axes of the measuring wheel 31 and the auxiliary wheel 35 are arranged parallel to each other, and the distance between them is adjusted by the knob.

[0026] The adjusting screw 40 drives the roller seat 34 to slide along the track groove 33, which can adjust the distance between the measuring wheel 31 and the auxiliary wheel 35 in real time. The measuring wheel 31 fits with the water pumping hose 22 through the annular guide groove 37, and the distance is adjusted by the roller seat 34 in the track groove 33, forming a two-way clamping structure to prevent the water pumping hose 22 from slipping.

[0027] Specifically, the working principle and operation method of this utility model are as follows: Assemble the peristaltic pump 20 with the fluororubber water suction hose 22, start the motor 32 to drive the auxiliary wheel 35 to rotate, and clamp the water suction hose 22 in both directions through the annular guide groove 37 of the measuring wheel 31 and the auxiliary wheel 35. The rotation amount is fed back in real time to accurately calculate the lowering depth. At the same time, rotate the adjusting screw 40 to dynamically adjust the distance between the measuring wheel 31 and the auxiliary wheel 35 to prevent the water suction hose 22 from slipping and ensure the accuracy of the depth.

[0028] Start the peristaltic pump 20, and generate negative pressure by squeezing the water suction hose 22 through the rollers to extract water samples at the target depth at a constant flow rate. In order to ensure the accuracy of the water sample, after the peristaltic pump 20 has been pumping water for a period of time, the water sample can be collected in a sampling bottle. The water suction hose 22 can be rinsed with water from the designated water layer to avoid water residue from the previous section. After sampling, the water suction hose 22 can be coiled up on the hook 21 for storage.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art based on the technical solution and concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A deep-water water quality stratification sampling device, characterized in that, include: Equipment base (10), pumping mechanism and hose metering mechanism; The pumping mechanism includes a peristaltic pump (20) fixedly installed on the upper surface of the equipment base (10), a hook (21) set on the front of the equipment base (10), a pumping hose (22) hung on the hook (21), and a counterweight (23) fixed to the sampling end of the pumping hose (22). The hose measuring mechanism includes a support frame (30), a measuring wheel (31), a motor (32), a track groove (33), a roller seat (34), an auxiliary wheel (35), and a drive assembly. The support frame (30) is fixedly installed on the front of the equipment base (10) by bolts. The auxiliary wheel (35) is rotatably installed on the inner top wall of the support frame (30). The track groove (33) is opened on the front of the support frame (30).

2. The deep-water water quality stratification sampling device according to claim 1, characterized in that: The roller seat (34) is slidably fitted in the track groove (33), and a guide block (36) that is slidably connected to the track groove (33) is fixedly installed on its front side. The meter wheel (31) is rotatably installed in the roller seat (34), and an annular guide groove (37) matching the water pumping hose (22) is opened on the surface of the meter wheel (31).

3. The deep-water water quality stratification sampling device according to claim 1, characterized in that: The drive assembly includes a threaded hole in the inner bottom wall of the support frame (30), an adjusting screw (40) threadedly connected in the threaded hole, the upper end of the adjusting screw (40) being rotatably connected to the lower surface of the roller seat (34), and a knob at the lower end of the adjusting screw (40).

4. The deep-water water quality stratification sampling device according to claim 3, characterized in that: The axis of the measuring wheel (31) and the auxiliary wheel (35) are arranged parallel to each other, and the distance between them is adjusted by a knob.

5. The deep-water water quality stratification sampling device according to claim 1, characterized in that: The counterweight (23) is made of lead.

6. The deep-water water quality stratification sampling device according to claim 1, characterized in that: The water pumping hose (22) is a fluororubber hose with an outer diameter of 8-12mm, an inner diameter of 6-8mm, and a working pressure of not less than 0.3MPa. The water pumping hose (22) is woven with stainless steel wire mesh.

7. The deep-water water quality stratification sampling device according to claim 1, characterized in that: The auxiliary wheel (35) has anti-slip texture on its outer circumference.

8. The deep-water water quality stratification sampling device according to claim 1, characterized in that: The motor (32) is fixedly installed on the front of the support frame (30), and the output shaft of the motor (32) is connected to the shaft end of the auxiliary wheel (35) through a coupling.

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