CN117147361A - Sampling and detecting method for water quality sand content of hydraulic engineering - Google Patents

Sampling and detecting method for water quality sand content of hydraulic engineering Download PDF

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Publication number
CN117147361A
CN117147361A CN202311327644.7A CN202311327644A CN117147361A CN 117147361 A CN117147361 A CN 117147361A CN 202311327644 A CN202311327644 A CN 202311327644A CN 117147361 A CN117147361 A CN 117147361A
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water
sampling
sand
water quality
assembly
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于会霞
赵杰
周秀彩
曹刚
王春艳
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
    • G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content

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Abstract

The invention discloses a water quality sand content sampling and detecting method for hydraulic engineering, and relates to the technical field of hydraulic inspection. According to the hydraulic engineering water quality sand content sampling detection method, through the cooperation of the switching assembly and the driving motor, the rotary driving of the sleeving assembly is realized, the lifting adjustment of the piston plate can be realized through the forward and reverse rotation of the driving motor, the lifting adjustment of the piston plate is further guaranteed, the water quality sample with a fixed volume can be extracted in the lifting process of the piston plate, the estimation of the sand content in water is realized in a weighing mode, the detection is rapid, the sand drying is not required, the annular filter screen is enabled to rotate in the water quality sample acquisition process by utilizing the cooperation of the annular filter screen and the switching assembly, the water quality circulation is guaranteed, meanwhile, massive impurities in water are effectively filtered, the smooth acquisition of the water quality sample is guaranteed, the setting of the clamping assembly is utilized, the separation of the sampling cylinder and the inner cylinder is facilitated, convenience is provided for weighing the water quality sample, and the hydraulic engineering water quality sampling detection method is more efficient and convenient to use.

Description

Sampling and detecting method for water quality sand content of hydraulic engineering
Technical Field
The invention relates to the technical field of water conservancy water quality detection, in particular to a water conservancy project water quality sand content sampling detection method.
Background
The sand content is generally the mass of dry sand contained in muddy water in a unit volume, and the current technical field of ocean engineering and hydrologic measurement often needs to measure the sand content values of different water layers of seawater or fresh water bodies so as to master the sand content data of different depths in vertical water bodies.
The conventional sand content detection mode often needs to filter the water sample of gathering after gathering, filters the water quality and dries the back, weighs out silt quality, obtains the sand content, need carry out alone to the filtration of silt, detects sample time longer, and it is after accomplishing the water quality sample to detect water flow sand content sample detection device for water conservancy survey, discharges water, later dries remaining sand, reaches the integration operation of sample stoving like application number 202211553318.3.
Based on the above-mentioned data, it can be seen that although the acquisition speed of dry sand is accelerated by the sampling and drying operation, the measurement is still not rapid enough, and it is necessary to wait for sand drying, so that the estimation efficiency of the water sand content is low.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a water quality sand content sampling and detecting method for hydraulic engineering, which solves the problems that the conventional water quality sand content detection needs to wait for sand drying and the water quality sand content estimation efficiency is lower.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the water quality sand content sampling and detecting method for the hydraulic engineering specifically comprises the following steps:
step one, sedimentation: binding the butt plate by using a rope, and throwing the sampling tube into water to enable the sampling tube to settle to a set depth;
step two, filtering water: controlling a driving motor to rotate, driving the switching assembly to rotate by the driving motor, driving the sleeving assembly to rotate by the switching assembly, pushing the piston plate to slide downwards along the inner cylinder by the sleeving assembly, driving the weighing plugging assembly to slide downwards by the piston plate, driving the annular filter screen to descend by the weighing plugging assembly in the process, and moving the large-block impurities in water between the piston plate and the weighing plugging assembly after being filtered by the annular filter screen;
step three, sampling: controlling a driving motor to rotate reversely, driving the switching assembly to rotate by the driving motor, driving the sleeving assembly to rotate by the switching assembly, pulling the piston plate to move upwards along the inner cylinder by the sleeving assembly, and extracting water between the piston plate and the weighing and plugging assembly until the inner cylinder is plugged by the weighing and plugging assembly, storing the water in the inner cylinder, and completing sampling of a water quality sample with a fixed volume;
step four, rotary water filtering: in the rotating process of the transfer assembly in the second step and the third step, the annular filter screen is driven to rotate, and massive impurities on the surface of the annular filter screen are cleaned;
step five, weighing and calculating: after the step three is completed, the sampling tube is placed on a horizontal table top, the clamping assembly is loosened, the sampling tube is pulled upwards, the sampling tube is separated from the inner tube, and the weight M measured by the weighing and plugging assembly is recorded Total (S) Combined with the weight M measured by the weighing and plugging assembly after the sampling tube is separated when not sampling Original, original Volume V of water sample, density ρ of water Water and its preparation method And density ρ of sand Sand Calculate the weight M of the sampled sand Sand Then M is arranged Sand And (5) comparing the water content with the volume V to obtain the sand content in the sampled water.
The invention is further provided with: calculating the sand weight M in the fifth step Sand The formula of (2) is:
M sand ＝M Total (S) -M Original, original -ρ Water and its preparation method *(V-M Sand /ρ Sand )。
The invention is further provided with: the top of the sampling tube is fixedly provided with an isolation box, and the top of the isolation box is provided with a sealing cover;
the driving motor is fixedly arranged at the top of the sampling tube, a storage battery is fixedly arranged at the top of the sampling tube, and the driving motor and the storage battery are both arranged in the isolation box;
the butt joint board is provided with two, and two equal fixed mounting of butt joint boards are at the top of a sampling tube, two the binding hole has all been seted up to the surface of butt joint board.
Through adopting above-mentioned technical scheme, utilize the cooperation of insulation can and sealed lid, realize the waterproof protection to driving motor and battery.
The invention is further provided with: the switching component comprises a large gear, a small gear and a tooth ring, wherein the outer surfaces of the large gear and the small gear are meshed, and the outer surface of the small gear is meshed with the inner surface of the tooth ring;
the output end of the driving motor penetrates through the sampling tube and is fixedly connected with one end of the large gear rotating shaft, the tooth ring is arranged at the top of the inner cavity of the sampling tube, and the tooth ring is lapped and arranged at the top of the periphery of the inner tube;
the pinion is rotatably arranged at the top of the inner cavity of the sampling tube, and the pinion is arranged above the inner tube.
Through adopting above-mentioned technical scheme, utilize the cooperation of gear wheel, pinion and tooth ring, when driving motor drives the gear wheel and rotates, drive pinion rotates, makes tooth ring rotate, provides convenient condition for the rotation of annular filter screen.
The invention is further provided with: the clamping assembly comprises three L-shaped plugboards and three positioning rods, wherein the three L-shaped plugboards are uniformly spaced and fixedly arranged at the top of an inner cavity of the inner cylinder, a notch matched with the L-shaped plugboards is formed in the top of the sampling cylinder, a bayonet is formed in the surface of the L-shaped plugboards, the three positioning rods are uniformly spaced and fixedly arranged on the periphery of the isolation box, a pin frame is sleeved on the periphery of each positioning rod in a sliding manner, the pin frame is matched with the bayonet for use, a spring is sleeved on the outer surface of each positioning rod, and two ends of the spring are fixedly connected with one side of each pin frame opposite to the isolation box.
The invention is further provided with: and the three pin frames are fixedly connected with a linkage ring together through connecting ropes.
Through adopting above-mentioned technical scheme, utilize the cooperation of three L type picture peg and notch, realize the installation about the stability of inner tube, under the cooperation of locating lever, round pin frame, spring and bayonet socket, realize the position definition to L type picture peg, guarantee the stability of L type picture peg position, cooperation connecting rope and the setting of linking ring, for the synchronous movement of three round pin frame provides convenience, guarantees the convenient separation of sampling tube and inner tube.
The invention is further provided with: the socket joint assembly comprises a spline column and a cross bracket, the cross bracket is fixedly arranged on the inner surface of the inner cylinder, the top of the cross bracket penetrates through and is in threaded connection with a threaded column, a spline groove matched with the spline column is formed in the top of the threaded column, the bottom of the threaded column is rotationally connected with the top of the piston plate through a bearing, the spline column is fixedly arranged at the bottom of the large gear, and the piston plate is slidably arranged in the inner cylinder;
and a water outlet communicated with the spline groove is formed in the surface of the threaded column.
Through adopting above-mentioned technical scheme, utilize the cooperation of spline post and gear wheel, realize the rotation drive of spline post, cooperation spline groove, screw thread post and cross bracket, drive screw thread post rotation in-process at the spline post, realize the stable lift of screw thread post, and then realize the stable lift of piston board, for the acquisition and the discharge of quality of water sample are convenient.
The invention is further provided with: the utility model provides a weighing and plugging assembly, including the bottom plate, the top fixed mounting of bottom plate has isolating ring and weighing sensor, weighing sensor sets up the inside at the isolating ring, annular filter screen fixed mounting is at the top of bottom plate, and the isolating ring sets up the inside at annular filter screen, the isolating ring cooperatees with the inner tube and uses, weighing sensor's top fixed mounting has the board of accepting, accept board slidable mounting in the inside of isolating ring, and accept board and inner tube's internal surface and cooperate and use.
The invention is further provided with: the bottom of the tooth ring is fixedly provided with a plurality of guide posts, the guide posts are uniformly distributed at intervals, the top of the annular filter screen is fixedly provided with a sealing ring, the sealing ring and the annular filter screen are arranged between the sampling cylinder and the inner cylinder, and the tops of the sealing ring, the annular filter screen and the bottom plate are provided with guide holes matched with the guide posts;
the top of the bearing plate is fixedly connected with the bottom of the piston plate through a fixing column.
Through adopting above-mentioned technical scheme, under the cooperation of fixed column, accept board, weighing sensor, bottom plate, piston board, screw thread post, cross bracket and inner tube, guarantee the stability of position between inner tube and the bottom plate, cooperation isolating ring, accept the setting of board and inner tube, guarantee the stability of quality of water sample storage in the inner tube, it is convenient to weigh for quality of water sample, and under sealing ring, annular filter screen, guide post and guiding hole's cooperation, rotate the in-process at tooth ring, realize annular filter screen's effective rotation drive.
The invention is further provided with: the top of sampling tube surface is inlayed and is provided with the watertight net, the watertight net sets up the top at the sealing ring, the water hole has been seted up on the inner tube surface, and the top at the piston board is seted up to the water hole, the water hole sets up the below at the sealing ring.
Through adopting above-mentioned technical scheme, through the setting of the close net of crossing water, guarantee that water can pass the sampling tube, and the impurity in the water is filtered outside, the setting of cooperation sealing ring realizes passing the stop of crossing water in the watertight net, on the setting of outlet, can discharge the ponding in the spline groove to the piston board, under the cooperation of crossing the mouth of a river, when guaranteeing that the piston board can stabilize the downwardly moving, after accomplishing the sample of quality of water sample, can guarantee the effective discharge of piston board water, avoid influencing the weighing of quality of water sample.
(III) beneficial effects
The invention provides a water quality sand content sampling and detecting method for hydraulic engineering. The device comprises the following
The beneficial effects are that:
(1) According to the invention, through the cooperation of the switching assembly and the driving motor, the rotary driving of the sleeving assembly is realized, the lifting adjustment of the piston plate can be realized by controlling the forward and reverse rotation of the driving motor, so that the piston plate is ensured to be capable of extracting a water quality sample with a fixed volume in the lifting process, the estimation of the sand content in water is realized in a weighing manner, the detection is rapid, the sand drying is not required, the annular filter screen is enabled to rotate in the water quality sample acquisition process by utilizing the cooperation of the annular filter screen and the switching assembly, the water quality circulation is ensured, meanwhile, massive impurities in the water are effectively filtered, the smooth acquisition of the water quality sample is ensured, and the arrangement of the clamping assembly is convenient for the separation of the sampling tube and the inner barrel, so that the weighing of the water quality sample is convenient, and the use is more efficient and convenient.
(2) According to the invention, by utilizing the cooperation of the large gear, the small gear and the tooth ring, when the driving motor drives the large gear to rotate, the small gear is driven to rotate, so that the tooth ring rotates, convenience is provided for the rotation of the annular filter screen, and the effective rotation driving of the annular filter screen is realized in the rotation process of the tooth ring under the cooperation of the sealing ring, the annular filter screen, the guide post and the guide hole.
(3) According to the invention, the stable up-down installation of the inner cylinder is realized by utilizing the matching of the three L-shaped plugboards and the notch, the position limitation of the L-shaped plugboards is realized under the matching of the positioning rod, the pin frame, the spring and the bayonet, the stability of the position of the L-shaped plugboards is ensured, the arrangement of the connecting rope and the connecting ring is matched, the synchronous movement of the three pin frames is facilitated, and the convenient separation of the sampling cylinder and the inner cylinder is ensured.
(4) According to the invention, the spline column is matched with the large gear to realize rotation driving, and the spline groove, the threaded column and the cross bracket are matched with each other, so that the threaded column is stably lifted in the process that the spline column drives the threaded column to rotate, and the stable lifting of the piston plate is realized, thereby providing convenience for acquiring and discharging a water quality sample.
(5) According to the invention, the stability of the position between the inner cylinder and the bottom plate is ensured by the cooperation of the fixed column, the bearing plate, the weighing sensor, the bottom plate, the piston plate, the threaded column, the cross bracket and the inner cylinder, and the stability of the water quality sample stored in the inner cylinder is ensured by the cooperation of the isolating ring, the bearing plate and the inner cylinder, so that convenience is provided for weighing the water quality sample.
(6) According to the invention, through the arrangement of the watertight net, water can pass through the sampling tube, impurities in the water are filtered outside, the water passing through the watertight net is blocked by the arrangement of the sealing ring, accumulated water in the spline groove can be discharged onto the piston plate by the arrangement of the water outlet, the piston plate can stably move downwards under the cooperation of the water outlet, and meanwhile, the effective discharge of water on the piston plate can be ensured after the sampling of a water quality sample is finished, so that the weighing of the water quality sample is prevented from being influenced.
Drawings
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of a sampling tube according to the present invention;
FIG. 4 is a schematic structural view of an inner barrel of the present invention;
FIG. 5 is a schematic illustration of the connection of the inner barrel and adapter assembly of the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 2A in accordance with the present invention;
FIG. 7 is a schematic view of a socket assembly according to the present invention;
FIG. 8 is a schematic view of the structure of the guide post, seal ring and guide hole of the present invention;
FIG. 9 is a schematic view of the structure of the weighing plugging assembly of the present invention;
FIG. 10 is a schematic illustration of the connection of the cartridge and the clip assembly of the present invention;
in the figure, 1, a sampling tube; 2. an isolation box; 3. sealing cover; 4. a driving motor; 5. a storage battery; 6. an abutting plate; 7. binding holes; 8. a switching component; 9. a large gear; 10. a pinion gear; 11. a tooth ring; 12. an inner cylinder; 13. a clamping assembly; 14. an L-shaped plugboard; 15. a positioning rod; 16. a notch; 17. a bayonet; 18. a pin frame; 19. a connecting rope; 20. a linkage ring; 21. a socket assembly; 22. a spline post; 23. a cross bracket; 24. a threaded column; 25. spline grooves; 26. a piston plate; 27. a water outlet; 28. weighing the plugging assembly; 29. a bottom plate; 30. a spacer ring; 31. a weighing sensor; 32. an annular filter screen; 33. a spring; 34. a receiving plate; 35. a guide post; 36. a seal ring; 37. a guide hole; 38. fixing the column; 39. passing through a watertight net; 40. and water holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-10, the following two technical schemes are provided in the embodiments of the present invention:
embodiment 1,
The water quality sand content sampling and detecting method for the hydraulic engineering specifically comprises the following steps:
step one, sedimentation: a rope passes through the binding hole 7, the sampling tube 1 is put into water after the binding of the butt plate 6, the settlement is set to a depth, in order to realize effective control of a driving motor 4, a control cable is wound on the rope, one end of the control cable is immersed into water along with the sampling tube 1, and a control switch is arranged at the other end of the control cable and used for controlling the opening and closing and positive and negative rotation of the driving motor 4, and the driving motor 4 is a servo motor;
step two, filtering water: controlling the driving motor 4 to rotate, driving the driving motor 4 to drive the large gear 9 to rotate, driving the large gear 9 to drive the spline post 22 to rotate, driving the thread post 24 to rotate by the spline post 22, and driving the thread post 24 to move downwards along the cross bracket 23, wherein in the process, the thread post 24 pushes the piston plate 26 to slide downwards along the inner cylinder 12, the piston plate 26 drives the bearing plate 34 to slide downwards, the bearing plate 34 extrudes the weighing sensor 31 to enable the bottom plate 29 to slide downwards, in the process, the bottom plate 29 drives the annular filter screen 32 to descend, and large impurities in water are filtered by the annular filter screen 32 and then move between the piston plate 26 and the bearing plate 34;
step three, sampling: controlling the driving motor 4 to rotate reversely, driving the large gear 9 to rotate by the driving motor 4, driving the spline post 22 to rotate by the large gear 9, driving the thread post 24 to rotate by the spline post 22, and moving the thread post 24 upwards along the cross bracket 23, wherein in the process, the thread post 24 pushes the piston plate 26 to slide upwards along the inner cylinder 12, water between the piston plate 26 and the bearing plate 34 is extracted, in the process, the bottom plate 29 drives the annular filter screen 32 and the isolating ring 30 to move upwards until the isolating ring 30 is tightly attached to the bottom of the inner cylinder 12, the inner cylinder 12 is blocked, and water is stored in the inner cylinder 12, so that sampling of a fixed volume water quality sample is completed;
step four, rotary water filtering: in the second and third steps, the large gear 9 drives the small gear 10 to rotate, the small gear 10 drives the tooth ring 11 to rotate, the tooth ring 11 drives the guide post 35 to rotate, the guide post 35 drives the annular filter screen 32 to rotate, and large impurities on the surface of the annular filter screen 32 are cleaned, and in the second and third steps, the bottom plate 29 drives the annular filter screen 32 to move along the guide post 35;
step five, weighing and calculating: after the third step of sampling is completed, the sampling tube 1 is placed on a horizontal table top, the linkage ring 20 is pulled upwards, the linkage ring 20 drives the connecting rope 19 to move, the connecting rope 19 drives the pin frame 18 to move along the positioning rod 15, in the process, the pin frame 18 extrudes the spring 33 until the pin frame 18 is separated from the L-shaped plugboard 14, the sampling tube 1 is pulled upwards, the sampling tube 1 is separated from the inner cylinder 12, and the weight M measured by the weighing sensor 31 is recorded Total (S) Wherein the weighing sensor 31 is a YHT219 weighing sensor, and is combined with the weight M measured by the weighing and plugging assembly 28 after the sampling tube 1 is separated when not sampling Original, original Volume V of water sample, density ρ of water Water and its preparation method And density ρ of sand Sand According to formula M Sand ＝M Total (S) -M Original, original -ρ Water and its preparation method *V-M Sand /ρ Sand Calculate the weight M of the sampled sand Sand Then M is arranged Sand And (5) comparing the water content with the volume V to obtain the sand content in the sampled water.
As a detailed description, the density ρ of water Water and its preparation method Take 1.0 x 10 3 kg/m 3 Density ρ of sand Sand Take 2.32 x 10 3 kg/m 3 Wherein the volume V of the water quality sample is fixed, i.e. after the device is completely immersed in water and the isolating ring 30 seals the bottom of the inner cylinder 12, the piston plate 26, the receiving plate 34 and the inner cylinder 12 enclose a space for storing the water quality sample.
As a detailed description, the weight M measured by the weighing and plugging assembly 28 after the sampling tube 1 is separated when not sampling Original, original To directly repeat the step five operation when the device is not submerged, the weight measured by the closure assembly 28 is weighed when the sampling cartridge 1 is separated from the inner cartridge 12.
As the preferred scheme, in order to guarantee the effectual work of driving motor 4 in water, the top fixed mounting of sampling tube 1 has insulation case 2, and the top of insulation case 2 is provided with sealed lid 3, and driving motor 4 fixed mounting is at the top of sampling tube 1, and the top of sampling tube 1 still fixed mounting has battery 5, and driving motor 4 and battery 5 all set up in the inside of insulation case 2, and wherein the one end of control cable extends to in the insulation case 2, and does sealed processing between control cable and the insulation case 2, utilizes the battery to supply energy to driving motor 4.
In this embodiment, through the positive and negative rotation of control driving motor 4, can realize the lift adjustment of piston plate 26, guarantee the piston plate 26 in-process that rises, can extract fixed volume's quality of water sample, realize the estimation of aquatic sand content with the mode of weighing, it is rapid to detect, need not to wait for the stoving of sand, and the rotatory design of annular filter screen 32, make annular filter screen 32 guarantee the quality of water circulation in quality of water sample acquisition process, effectively filter the massive impurity in the aquatic, guarantee the smooth acquisition of quality of water sample, and utilize joint assembly 13's setting, make things convenient for the separation of sampling tube and inner tube, for quality of water sample's weighing to offer convenience, it is more high-efficient convenient to use.
Embodiment II,
This embodiment is an improvement of the previous embodiment, a hydraulic engineering water quality and sand content sampling detection method, still include the sealing ring 36 of the top fixed mounting of annular filter screen 32, sealing ring 36 and annular filter screen 32 all set up between sampling tube 1 and inner tube 12, and sealing ring 36, annular filter screen 32 and bottom plate 29's top all set up the guiding hole 37 that cooperatees with guide post 35 and use, the top of sampling tube 1 surface is inlayed and is provided with watertight net 39, watertight net 39 sets up in the top of sealing ring 36, water hole 40 has been seted up on the inner tube 12 surface, and water hole 40 sets up in the top of piston plate 26, water hole 40 sets up in the below of sealing ring 36.
To describe in detail, when the sampling tube 1 is immersed in water in the first step, the water is filtered by the watertight net 39 and enters between the sampling tube 1 and the inner tube 12 and is blocked by the sealing ring 36, and after the water is filtered by the annular filter net 32 through the guide hole 37, the water enters above the piston plate 26 through the water passing hole 40, in the second step, the water continuously enters above the piston plate 26 through the water passing hole 40 in the sliding process of the piston plate 26 along the inner tube 12, when the bottom plate 29 drives the annular filter net 32 to descend in the second step, the annular filter net 32 drives the sealing ring 36 to descend, after the water passing through the annular filter net 32 is blocked by the sealing ring 36, the water does not enter above the piston plate 26 along the water passing through the water passing hole 40 any more, and when the sealing ring 36 moves below the water passing through the water passing hole 40, the water passing through the watertight net 39 enters above the piston plate 26 along the water passing hole 40, and is ensured to stably descend the piston plate 26.
Further describing, in the third step, in the process of the piston plate 26 rising along the inner cylinder 12, the piston plate 26 discharges the water above through the water passing holes 40, and part of the water is discharged through the connection gap between the tooth ring 11 and the inner cylinder 12, in the fifth step, after the sampling tube 1 is placed on the horizontal table top, the sampling tube is kept stand for a period of time, so that the water on the piston plate 26 is completely discharged through the water passing holes 40, and the influence on the subsequent weighing is avoided.
Further, in order to avoid water accumulation in the spline grooves 25 and to affect weighing, a drain port 27 communicating with the spline grooves 25 is provided on the surface of the threaded post 24.
The advantages of the embodiment over the first embodiment are: the piston plate 26 is ensured to conveniently lift, and meanwhile, the influence caused by the weighing of the water storage symmetrical weight sensor 31 above the piston plate 26 when the device is weighed is avoided.

Claims (10)

1. A water quality sand content sampling and detecting method for hydraulic engineering is characterized in that: the method specifically comprises the following steps:
step one, sedimentation: binding the butt plate (6) by using a rope, and throwing the sampling tube (1) into water to enable the sampling tube to settle to a set depth;
step two, filtering water: controlling a driving motor (4) to rotate, driving the driving motor (4) to drive a switching assembly (8) to rotate, driving the switching assembly (8) to drive the sleeving assembly (21) to rotate, driving a piston plate (26) to slide downwards along an inner cylinder (12) by the sleeving assembly (21), driving a weighing plugging assembly (28) to slide downwards by the piston plate (26), driving an annular filter screen (32) to descend by the weighing plugging assembly (28) in the process, and moving the large-block impurities in water between the piston plate (26) and the weighing plugging assembly (28) after being filtered by the annular filter screen (32);
step three, sampling: controlling a driving motor (4) to rotate reversely, driving the driving motor (4) to drive a switching assembly (8) to rotate, driving a sleeving assembly (21) to rotate by the switching assembly (8), pulling a piston plate (26) to move upwards along an inner cylinder (12) by the sleeving assembly (21), and extracting water between the piston plate (26) and a weighing plugging assembly (28) until the inner cylinder (12) is plugged by the weighing plugging assembly (28), and storing the water in the inner cylinder (12) to finish sampling of a water quality sample with a fixed volume;
step four, rotary water filtering: in the second and third steps, the rotation process of the transfer assembly (8) drives the annular filter screen (32) to rotate, so that large-block impurities on the surface of the annular filter screen (32) are cleaned;
step five, weighing and calculating: after the step three is completed, the sampling tube (1) is placed on a horizontal table top, the clamping assembly (13) is loosened, the sampling tube (1) is pulled upwards, the sampling tube (1) is separated from the inner tube (12), and the weight M measured by the weighing plugging assembly (28) is recorded Total (S) Combined with the weight M measured by the weighing and plugging assembly (28) after the sampling tube (1) is separated when not sampling Original, original Volume V of water sample, density ρ of water Water and its preparation method And density ρ of sand Sand Calculate the weight M of the sampled sand Sand Then M is arranged Sand And (5) comparing the water content with the volume V to obtain the sand content in the sampled water.
2. The method for sampling and detecting the sand content of water quality of hydraulic engineering according to claim 1, which is characterized by comprising the following steps: calculating the sand weight M in the fifth step Sand The formula of (2) is:
M sand ＝M Total (S) -M Original, original -ρ Water and its preparation method *(V-M Sand /ρ Sand )。
3. The method for sampling and detecting the sand content of water quality of hydraulic engineering according to claim 1, which is characterized by comprising the following steps: the top of the sampling tube (1) is fixedly provided with an isolation box (2), and the top of the isolation box (2) is provided with a sealing cover (3);
the driving motor (4) is fixedly arranged at the top of the sampling tube (1), a storage battery (5) is fixedly arranged at the top of the sampling tube (1), and the driving motor (4) and the storage battery (5) are both arranged in the isolation box (2);
the two butt joint plates (6) are arranged, the two butt joint plates (6) are fixedly arranged at the top of the sampling tube (1), and binding holes (7) are formed in the surfaces of the two butt joint plates (6).
4. The method for sampling and detecting the sand content of water quality of hydraulic engineering according to claim 3, which is characterized by comprising the following steps: the switching assembly (8) comprises a large gear (9), a small gear (10) and a tooth ring (11), wherein the large gear (9) is meshed with the outer surface of the small gear (10), and the outer surface of the small gear (10) is meshed with the inner surface of the tooth ring (11);
the output end of the driving motor (4) penetrates through the sampling tube (1) and is fixedly connected with one end of a rotating shaft of the large gear (9), the tooth ring (11) is arranged at the top of the inner cavity of the sampling tube (1), and the tooth ring (11) is lapped and arranged at the top of the periphery of the inner tube (12);
the pinion (10) is rotatably arranged at the top of the inner cavity of the sampling tube (1), and the pinion (10) is arranged above the inner tube (12).
5. The method for sampling and detecting the sand content of water quality of hydraulic engineering according to claim 4, which is characterized in that: the clamping assembly (13) comprises three L-shaped inserting plates (14) and three positioning rods (15), wherein the three L-shaped inserting plates (14) are fixedly arranged at the top of an inner cavity of the inner cylinder (12) at equal intervals, a notch (16) matched with the L-shaped inserting plates (14) is formed in the top of the sampling cylinder (1), a bayonet (17) is formed in the surface of the L-shaped inserting plates (14), the three positioning rods (15) are fixedly arranged at the periphery of the isolation box (2) at equal intervals, a pin frame (18) is sleeved on the periphery of each positioning rod (15) and is slidably arranged, the pin frame (18) is matched with the bayonet (17), a spring (33) is sleeved on the outer surface of each positioning rod (15), and two ends of each spring (33) are fixedly connected with one side, opposite to the pin frame (18) and the isolation box (2), respectively.
6. The method for sampling and detecting the sand content of water quality of hydraulic engineering according to claim 5, which is characterized in that: a linkage ring (20) is fixedly connected between the three pin frames (18) through a connecting rope (19).
7. The method for sampling and detecting the sand content of water quality of hydraulic engineering according to claim 5, which is characterized in that: the socket joint assembly (21) comprises a spline column (22) and a cross bracket (23), the cross bracket (23) is fixedly arranged on the inner surface of the inner cylinder (12), the top of the cross bracket (23) penetrates through and is in threaded connection with a threaded column (24), a spline groove (25) matched with the spline column (22) is formed in the top of the threaded column (24), the bottom of the threaded column (24) is rotationally connected with the top of a piston plate (26) through a bearing, the spline column (22) is fixedly arranged at the bottom of a large gear (9), and the piston plate (26) is slidably arranged in the inner cylinder (12);
the surface of the threaded column (24) is provided with a water outlet (27) communicated with the spline groove (25).
8. The method for sampling and detecting the sand content of water quality of hydraulic engineering according to claim 7, which is characterized in that: the utility model provides a shutoff subassembly (28) weighs, including bottom plate (29), the top fixed mounting of bottom plate (29) has isolating ring (30) and weighing sensor (31), weighing sensor (31) set up the inside at isolating ring (30), annular filter screen (32) fixed mounting is at the top of bottom plate (29), and isolating ring (30) set up the inside at annular filter screen (32), isolating ring (30) cooperate with inner tube (12) and use, the top fixed mounting of weighing sensor (31) has and accepts board (34), accept board (34) slidable mounting in the inside of isolating ring (30), and accept board (34) and inner surface matched with use of inner tube (12).
9. The method for sampling and detecting the sand content of water quality of hydraulic engineering according to claim 8, which is characterized in that: the bottom of the tooth ring (11) is fixedly provided with a plurality of guide posts (35), the guide posts (35) are uniformly distributed at intervals, the top of the annular filter screen (32) is fixedly provided with a sealing ring (36), the sealing ring (36) and the annular filter screen (32) are arranged between the sampling tube (1) and the inner tube (12), and guide holes (37) matched with the guide posts (35) are formed in the tops of the sealing ring (36), the annular filter screen (32) and the bottom plate (29);
the top of the bearing plate (34) and the bottom of the piston plate (26) are fixedly connected through a fixing column (38).
10. The method for sampling and detecting the sand content of water quality of hydraulic engineering according to claim 9, which is characterized in that: the top of sampling tube (1) surface is inlayed and is provided with watertight net (39), watertight net (39) set up the top at sealing ring (36), water hole (40) have been seted up on inner tube (12) surface, and water hole (40) are seted up in the top of piston plate (26), water hole (40) set up the below at sealing ring (36).
CN202311327644.7A 2023-10-13 2023-10-13 Sampling and detecting method for water quality sand content of hydraulic engineering Pending CN117147361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311327644.7A CN117147361A (en) 2023-10-13 2023-10-13 Sampling and detecting method for water quality sand content of hydraulic engineering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311327644.7A CN117147361A (en) 2023-10-13 2023-10-13 Sampling and detecting method for water quality sand content of hydraulic engineering

Publications (1)

Publication Number Publication Date
CN117147361A true CN117147361A (en) 2023-12-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311327644.7A Pending CN117147361A (en) 2023-10-13 2023-10-13 Sampling and detecting method for water quality sand content of hydraulic engineering

Country Status (1)

Country Link
CN (1) CN117147361A (en)

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