A water quality sampling device

Abstract

A water quality sampling device includes a frame, an upper mounting plate, a lower mounting plate, and a storage tank, characterized in that the upper mounting plate and the lower mounting plate are respectively mounted on the top and the bottom of a support tube, and there are a plurality of storage tanks, which are distributed in a circle with the support tube as the center and are clamped between the upper mounting plate and the lower mounting plate; an upper shaft hole is provided in the center of the upper mounting plate, and a plurality of upper water holes are arranged on the inner wall of the upper shaft hole in the circumferential direction, and the storage cavity inside each storage tank is respectively connected with the corresponding upper water hole; a switching column that can rotate in a circle is installed in the upper shaft hole, and a channel connected with the outlet of a water pump is provided on the switching column, and the switching column is rotated so that the channel can be selectively connected with the upper water hole, and the inlet of the water pump is connected with the water in the sampling water area. The present invention has a simple structure, and the switching column is rotated by a motor so that the water pump is selectively connected with the storage tank, so that each storage tank can be stored one by one, thereby realizing automatic and multiple sampling.

Description

Technical Field

[0001] The invention relates to water sampling technology, in particular to a water quality sampling device. Background Art

[0002] With the increasing maturity of environmental protection laws and concepts, water quality monitoring and sampling are very necessary. At present, water sampling is mainly carried out regularly, and the sampling method is manual sampling. This method is highly dependent on manual labor and is very time-consuming and labor-intensive. Summary of the invention

[0003] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a water quality sampling device which can realize automatic and multiple sampling.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A water quality sampling device comprises a frame, an upper mounting plate, a lower mounting plate, and a storage tank, wherein the upper mounting plate and the lower mounting plate are respectively mounted on the top and the bottom of a supporting tube, and there are a plurality of storage tanks, which are distributed in a circle with the supporting tube as the center and clamped between the upper mounting plate and the lower mounting plate; an upper axial hole is provided at the center of the upper mounting plate, and a plurality of upper water holes are arranged on the circumferential direction of the inner wall of the upper axial hole, and the storage cavity inside each storage tank is respectively connected with the corresponding upper water hole; a switching column which can rotate in a circle is installed in the upper axial hole, and a channel connected with the outlet of a water pump is provided on the switching column, and the switching column is rotated so that the channel can be selectively connected with the upper water hole, and the inlet of the water pump is connected with the water in the sampling water area.

[0006] Preferably, an electrical cover is installed on the top plate of the frame, a water pump is installed inside the electrical cover, the inlet of the water pump is connected with the water inlet pipe, and the outlet is connected with one end of the water outlet pipe; the other end of the water outlet pipe can be rotatably and sealedly installed in the connecting pipe, and the connecting pipe is installed and fixed in the water receiving hole of the switching column;

[0007] The outer wall at the top of the switching column is also provided with latch teeth, which are evenly distributed in the circumferential direction of the switching column to form a gear part; the gear part is meshed with a gear for transmission, and the gear is fixed on the output shaft of the motor.

[0008] Preferably, the bottom of the upper mounting plate is provided with a plurality of upper slots matching the storage tank, and the inner wall of the upper shaft hole is also provided with a plurality of drainage grooves in the circumferential direction, the upper shaft hole is sealed with the outer wall of the switching column and can be assembled rotatably in the circumference, the upper water hole and the drainage grooves are arranged at intervals, and the other end of the upper water hole is connected with the interior of the storage tank through a plug-in connector;

[0009] The channel of the switching column can be communicated with each water hole and drainage groove respectively. The drainage groove forms a guide groove between the inner wall of the upper shaft hole and the switching column, and the guide groove is communicated with the tube cavity of the support tube.

[0010] Preferably, the lower mounting plate is provided with a lower card slot corresponding to the upper card slot, and the upper card slot and the lower card slot are respectively engaged with the upper sealing block and the lower sealing block at both ends of the storage tank, and the upper sealing block and the lower sealing block are respectively fixed at both ends of the storage tank and seal the two ends of the storage cavity inside the storage tank.

[0011] Preferably, a through exhaust hole is provided on the top of the side wall of the storage tank.

[0012] Preferably, the upper sealing block is provided with a sealed switch hole, and the inner wall of the sealed switch hole is provided with a plurality of L-shaped limit platforms, the plurality of L-shaped limit platforms are arranged in a circumferential direction, a through-axis hole is formed in the middle, and the gaps between adjacent limit platforms form a switch connecting groove;

[0013] A switch shaft is provided in the sealed switch hole, the bottom of the switch shaft is placed at the bottom of the through-axis hole and fixedly connected to the limited large end, a sealing plug is fixed on the top of the switch shaft, and the sealing plug is sealed, engaged, and slidably installed in the sealed switch hole at the upper part of the through-axis hole; a switch spring is sleeved on the part of the switch shaft located between the limit platform and the sealing plug; the plug-in connector is inserted into the sealed switch hole of the upper sealing block, and the sealing plug is pressed down. The sealing plug overcomes the spring force and slides down until the top of the sealing plug is lower than the top of the switch connecting groove, so that water can flow through the upper water hole and the switch connecting groove into the storage tank.

[0014] Preferably, a locking screw sleeve is installed at the bottom of the support tube and below the lower mounting plate. The locking screw sleeve is sleeved on the outside of the support tube and assembled therewith by screw threading. The lower mounting plate can slide in the axial direction of the support tube.

[0015] Preferably, the motor is a stepper motor or a servo motor, which is driven by a motor driver, and the control end of the motor driver is communicatively connected with the signal end of the PLC; the motor driver and the PLC are both installed in an electrical cover.

[0016] Preferably, the end of the water supply hole connected to the plug-in pipe connector is arranged to be inclined upward.

[0017] Preferably, the frame is provided with an upper cover on the top of the upper mounting plate, and a limit ring is also provided on the switching column. The limit ring is installed between the upper cover and the upper mounting plate so as to be rotatable in a circular manner but not axially movable, and the upper cover is fixed on the upper mounting plate.

[0018] The beneficial effects of the present invention are as follows: the present invention has a simple structure, and the switching column is rotated by a motor to select one of the water pumps to be connected to the storage tank, so that each storage tank can be stored one by one, thereby realizing automatic and multiple sampling. In the ongoing prototype test, the equipment uses 8 storage tanks and can perform 8 samplings, so the frequency of manual sampling can be reduced to once a month, thereby greatly reducing labor costs, and can achieve regular and timely sampling, which can greatly increase the number of later analysis samples and provide a large number of samples for water quality monitoring and treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the upper mounting plate of the present invention;

[0027] Fig. 9 It is a schematic diagram of the upper sealing block structure of the present invention. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] See also Figure 1-Figure 9A water quality sampling device includes a frame 110, a bottom plate 140 is installed at the bottom of the frame 110, a top plate 130 is installed at the top, an electrical cover 120 is installed on the top plate 130, and a notch 141 is provided on the bottom plate 140;

[0031] A water pump 210 is installed inside the electrical cover 120. The inlet of the water pump 210 is connected to the water inlet pipe 211, and the outlet is connected to one end of the water outlet pipe 212. When the water pump 210 is started, water in the target water area can be pumped to the water outlet pipe 212.

[0032] The other end of the water outlet pipe 212 can be rotatably and sealedly installed in the connecting pipe 450, and the connecting pipe 450 is installed and fixed in the water receiving hole 512 of the switching column 510. The switching column 510 is also provided with a vertically arranged first channel 513 and a horizontally arranged second channel 514. The first channel 513 connects one end of the second channel 514 and the bottom of the water receiving hole 512, and the other end of the second channel 514 passes through the switching column 510.

[0033] The outer wall of the top of the switching column 510 is also provided with latch teeth 511, which are evenly distributed in the circumferential direction of the switching column 510 to form a gear part; the gear part is meshed with the gear 520 for transmission, and the gear 520 is fixed on one end of the output shaft 221. The other end of the output shaft 221 passes through the protective cover 440 and is installed in the motor 220 installed on the protective cover 440. After the motor 220 is started, it can drive the switching column 510 to rotate in a circle. The motor is a stepper motor or a servo motor, which is driven by a motor driver. The control end of the motor driver is connected to the signal end of the PLC in communication, so that the working condition of the motor, such as the rotation angle, is controlled by the PLC, thereby controlling the rotation angle of the switching column.

[0034] The motor driver and PLC are both installed in the electrical cover 120. The PLC is also connected to the control end of the contactor in communication. The static contact of the contactor is conductively connected to the power supply, and the moving contact is conductively connected to the power supply end of the water pump, so that the PLC controls the start and stop of the water pump by controlling the opening and closing of the contactor. The contactor is installed in the electrical cover 120, and the power supply can be a battery installed in the electrical cover 120.

[0035] The switch column 510 is also provided with a limit ring 515, which is installed between the upper cover 430 and the upper mounting plate 420 in a circularly rotatable and non-axially movable manner. The upper cover 430 is fixed on the upper mounting plate 420; the upper mounting plate 420 is respectively provided with an upper slot 421, an upper water hole 422, a drainage groove 423, and an upper shaft hole 424, the upper shaft hole is sealed and assembled with the outer wall of the switch column 510 in a circularly rotatable manner, the upper water hole 422 and the drainage groove 423 are respectively spaced and evenly distributed on the circumference of the inner wall of the upper shaft hole 424, the other end of the upper water hole 422 is connected to one end of the plug-in pipe connector 240, and the upper water hole 422 is inclined upward from the end connected to the upper shaft hole 424 to the end connected to the plug-in pipe connector 240. This design is mainly to facilitate the backflow and discharge of water remaining in the upper water hole 422.

[0036] The second channel 514 can be connected to each water hole 422 and drainage groove 423 respectively. The drainage groove 423 forms a guide groove between the inner wall of the upper shaft hole 424 and the switching column, so as to facilitate water to flow out into the tube cavity 231. The tube cavity 231 is arranged in the support tube 230. One end of the support tube 230 is assembled and fixed with the upper mounting plate 420, and the other end is mounted with the lower mounting plate 410. The drainage groove 423 and the upper shaft hole 424 are both connected to the tube cavity 231, and the bottom of the tube cavity 231 is penetrated.

[0037] The lower mounting plate 410 is provided with a lower slot 411 corresponding to the upper slot 421, and the upper slot 421 and the lower slot 411 are respectively engaged with the upper sealing block 330 and the lower sealing block 320 at both ends of the storage tank 310, and the upper sealing block 330 and the lower sealing block 320 are respectively fixed at both ends of the storage tank 310 and seal the two ends of the storage cavity 311 inside the storage tank 310; the top of the storage tank 310 is provided with a through exhaust hole, so that the gas in the storage cavity can be discharged through the exhaust hole when filling with water.

[0038] A sealed switch hole 331 is provided on the upper sealing block 330, and a plurality of L-shaped limit platforms 334 are provided on the inner wall of the sealed switch hole. The plurality of L-shaped limit platforms are arranged in a circumferential direction, and a through-axis hole 333 is formed in the middle. The gaps between adjacent limit platforms form a switch connecting groove 332; a switch shaft 610 is provided in the sealed switch hole, and the bottom of the switch shaft is placed at the bottom of the through-axis hole and fixedly connected to the limited large end 611, and a sealing plug 630 is fixed on the top of the switch shaft, and the sealing plug is sealed, engaged, and slidably installed in the sealed switch hole at the upper part of the through-axis hole; a switch spring 620 is mounted on the part of the switch shaft located between the limit platform and the sealing plug, and the switch spring 620 is used to generate an upward thrust for the sealing plug.

[0039] In the initial state, the sealing plug 630 is connected to the portion of the sealed switch hole 331 where the switch connecting groove 332 is not provided (i.e., the sealing plug is in contact with the inner wall of the sealed switch hole above the switch connecting groove). At this time, the sealing plug 630 is sealed and assembled with the sealed switch hole 331.

[0040] When in use, the plug connector 240 is inserted into the sealed switch hole 331 and drives the sealing plug to move downward to overcome the elastic force of the switch spring until the top of the sealing plug 630 is lower than the top of the switch connecting groove, that is, the sealing plug slides down to communicate with the part of the sealed switch hole 331 provided with the switch connecting groove 332. At this time, the plug connector 240 connects the storage cavity with the water supply hole 422. The plug connector 240 is fixed in the upper mounting plate 420.

[0041] A locking screw sleeve 460 is installed at the bottom of the support tube 230 and below the lower mounting plate 410. The locking screw sleeve 460 is sleeved on the outside of the support tube 230 and assembled with the support tube 230 by screwing. The lower mounting plate 410 can slide in the axial direction of the support tube 230. Thus, by rotating the locking screw sleeve 460, the lower mounting plate 410 is pushed toward the upper mounting plate 420, so that the lower mounting plate 410 and the upper mounting plate 420 press the two ends of the storage tank to realize the clamping assembly of the storage tank. The notch 141 is used to facilitate the bottom of the support tube 230 to pass through.

[0042] When in use, the motor drives the switching column to rotate so that the second channel 514 is connected to one of the upper water holes 422, and then the water pump is started to pump water to the upper water hole 422, and the water enters the storage chamber through the plug connector 240 for storage. The water pump is set to start periodically and is controlled each time it is started. In this embodiment, the water pump is started every 50 hours and each time it is started for 15 seconds. As a result, the water pumped by the water pump is stored in the storage chamber and does not overflow the storage chamber. After sampling is completed, the water pump is powered off, and the motor is driven to drive the switching column to rotate, so that the second channel 514 is connected to the adjacent drain groove 423, so that the water in the first channel 513 and the second channel 514 is discharged.

[0043] At the next sampling, the water pump is first started for 5 seconds, so that the water in the first channel 513 and the second channel 514 is discharged through the pumped water, and then the water pump is stopped, the motor is started, the switching column is rotated to the second channel 514 to connect with the next upper water hole 422, and the water pump is started for 15 seconds to complete the sampling. The water discharged from the second channel 514 enters the upper shaft hole and the tube cavity and is discharged.

[0044] When the storage tank needs to be taken out, the locking nut is rotated to loosen the lower mounting plate, the lower mounting plate is moved downward, and then the storage tank is pulled down to make the plug connector 240 separate from the sealed switch hole. At this time, the sealing plug moves upward under the action of the switch spring to restore the seal with the sealed switch hole to prevent the water in the storage cavity from leaking out.

[0045] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0046] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A water quality sampling device, comprising a frame, an upper mounting plate, a lower mounting plate, and a storage tank, characterized in that: The upper mounting plate and the lower mounting plate are respectively mounted on the top and the bottom of the support tube. There are a plurality of storage tanks, which are distributed in a circle with the support tube as the center and are clamped between the upper mounting plate and the lower mounting plate. An upper shaft hole is provided at the center of the upper mounting plate, and a plurality of upper water holes are arranged in the circumferential direction of the inner wall of the upper shaft hole. The storage cavity inside each storage tank is respectively connected with the corresponding upper water hole. A switching column that can rotate in a circle is installed in the upper shaft hole, and a channel connected with the outlet of the water pump is provided on the switching column. By rotating the switching column, the channel can be selectively connected with the upper water hole, and the inlet of the water pump is connected with the water in the sampling water area. An electrical cover is installed on the top plate of the frame, and a water pump is installed inside the electrical cover. The inlet of the water pump is connected to the water inlet pipe, and the outlet is connected to one end of the water outlet pipe; the other end of the water outlet pipe can be rotatably and sealedly installed in the connecting pipe, and the connecting pipe is installed and fixed in the water receiving hole of the switching column; The outer wall of the top of the switching column is also provided with latch teeth, which are evenly distributed in the circumferential direction of the switching column to form a gear part; the gear part is meshed with a gear for transmission, and the gear is fixed on the output shaft of the motor; The bottom of the upper mounting plate is provided with a plurality of upper slots matching the storage tank, and the inner wall of the upper shaft hole is also provided with a plurality of drainage grooves in the circumferential direction. The upper shaft hole is sealed with the outer wall of the switching column and can be assembled rotatably in the circumference. The upper water hole and the drainage grooves are arranged at intervals, and the other end of the upper water hole is connected with the interior of the storage tank through a plug-in connector; The channel of the switching column can be connected to each water hole and the drainage groove respectively, and the drainage groove forms a guide groove between the inner wall of the upper shaft hole and the switching column, and the guide groove is connected to the tube cavity of the support tube; The lower mounting plate is provided with a lower card slot corresponding to the upper card slot, and the upper card slot and the lower card slot are respectively engaged with the upper sealing block and the lower sealing block at both ends of the storage tank, and the upper sealing block and the lower sealing block are respectively fixed at both ends of the storage tank and seal the two ends of the storage cavity inside the storage tank; The upper sealing block is provided with a sealed switch hole, and the inner wall of the sealed switch hole is provided with a plurality of L-shaped limit platforms, which are arranged in a circumferential direction, forming an axial hole in the middle, and the gaps between adjacent limit platforms form a switch connecting groove; A switch shaft is provided in the sealed switch hole, the bottom of the switch shaft is placed at the bottom of the through-axis hole and fixedly connected to the limited large end, and a sealing plug is fixed on the top of the switch shaft. The sealing plug is sealed, clamped, and slidably installed in the sealed switch hole at the upper part of the through-axis hole; a switch spring is sleeved on the part of the switch shaft located between the limit platform and the sealing plug; the plug-in connector is inserted into the sealed switch hole of the upper sealing block, and the sealing plug is pressed down. The sealing plug overcomes the spring force and slides down until the top of the sealing plug is lower than the top of the switch connecting groove, so that water can flow through the upper water hole and the switch connecting groove into the storage tank.

2. A water quality sampling device as claimed in claim 1, characterized in that: The top of the side wall of the storage tank is provided with a penetrating exhaust hole.

3. A water quality sampling device as claimed in claim 1, characterized in that: A locking screw sleeve is installed at the bottom of the support tube and below the lower mounting plate. The locking screw sleeve is sleeved on the outside of the support tube and assembled with the support tube through threaded engagement. The lower mounting plate can slide in the axial direction of the support tube.

4. A water quality sampling device as claimed in claim 1, characterized in that: The motor is a stepper motor or a servo motor, which is driven by a motor driver. The control end of the motor driver is communicatively connected with the signal end of the PLC. The motor driver and the PLC are both installed in an electrical cover.

5. A water quality sampling device as claimed in claim 1, characterized in that: The water supply hole is connected to the plug-in pipe connector at one end and is arranged to be inclined upward.

6. A water quality sampling device as claimed in claim 1, characterized in that: The frame is provided with an upper cover on the top of the upper mounting plate, and a limit ring is also provided on the switching column. The limit ring is installed between the upper cover and the upper mounting plate so as to be rotatable in a circular manner but not axially movable. The upper cover is fixed on the upper mounting plate.

Images