CN114002020B - Groundwater sample pretreatment device - Google Patents

Groundwater sample pretreatment device Download PDF

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Publication number
CN114002020B
CN114002020B CN202111293616.9A CN202111293616A CN114002020B CN 114002020 B CN114002020 B CN 114002020B CN 202111293616 A CN202111293616 A CN 202111293616A CN 114002020 B CN114002020 B CN 114002020B
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China
Prior art keywords
plate
cross arm
top cover
belt
basket
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CN202111293616.9A
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Chinese (zh)
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CN114002020A (en
Inventor
秦学全
王学鹏
陈京鹏
聂德久
刘欢
杨询昌
卢建荣
李东亮
桑可
黄迅
张�杰
袁训志
陈真
兰善治
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Second Hydrogeological Engineering Geological Brigade Of Shandong Geological And Prospecting Bureau Shandong Lubei Geological Engineering Survey Institute
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Second Hydrogeological Engineering Geological Brigade Of Shandong Geological And Prospecting Bureau Shandong Lubei Geological Engineering Survey Institute
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Application filed by Second Hydrogeological Engineering Geological Brigade Of Shandong Geological And Prospecting Bureau Shandong Lubei Geological Engineering Survey Institute filed Critical Second Hydrogeological Engineering Geological Brigade Of Shandong Geological And Prospecting Bureau Shandong Lubei Geological Engineering Survey Institute
Priority to CN202111293616.9A priority Critical patent/CN114002020B/en
Publication of CN114002020A publication Critical patent/CN114002020A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14Suction devices, e.g. pumps; Ejector devices

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention relates to the field of groundwater sampling detection, in particular to a groundwater sampling pretreatment device, which comprises cross arms, supporting pieces, inserting rods and a placement mechanism, wherein the cross arms are arranged front and back symmetrically, the supporting pieces are symmetrically arranged at the left end and the right end of each cross arm, the cross arms are perpendicular to the supporting pieces, the inserting rods are rotatably arranged at the lower ends of the supporting pieces, the placement mechanism is arranged between the cross arms.

Description

Groundwater sample pretreatment device
Technical Field
The invention relates to the field of groundwater sampling detection, in particular to a groundwater sampling pretreatment device.
Background
Groundwater refers to water existing in rock gaps below the ground, in the narrow sense, water in saturated aquifers below the groundwater, which can be developed and utilized as a water source for domestic water, industrial water and farm irrigation water, has the advantages of stable water supply amount and less pollution, contains special chemical components or groundwater with higher water temperature, and can be used as a raw material for medical treatment, heat source, beverage and extraction of useful elements.
Groundwater monitoring is an important component in the field of environmental monitoring, and provides high-quality service for optimizing configuration, scientifically managing groundwater resources, preventing and controlling geological disasters and protecting ecological environment.
The underground water monitoring object is preferably an existing water well, pit, natural dew of underground water and the like, the main means of underground water monitoring is to sample the underground water and then analyze the physical and chemical components of the sample, but the following problems occur in the underground water sampling process: the existing device is suitable for being directly fixed on the ground, and when the device is difficult to realize fixation when the structure is provided with a cement fence like a water well, the application range of the device is narrow, meanwhile, the sampling tool is easy to collide with the hole wall during the underground water sampling period, and the possibility of damage to the sampling tool or falling objects on the hole wall entering the sampling tool is easy to collide, so that the sampling and detection results of the follow-up underground water are affected.
Disclosure of Invention
In order to solve the technical problems, the invention provides a groundwater sampling pretreatment device which comprises cross arms, supporting pieces, inserting rods and placing mechanisms, wherein the cross arms are arranged in a front-back symmetrical mode, the supporting pieces are symmetrically arranged at the left end and the right end of each cross arm, the cross arms are perpendicular to the supporting pieces, the inserting rods are rotatably arranged at the lower ends of the supporting pieces, and the placing mechanisms are arranged between the cross arms.
The utility model provides a place mechanism include motor, the pivot, a belt, no. two belts, the steel cable, the handle, the top cap, the net basket, the card axle, put thing section of thick bamboo and otter board, the motor is installed between the upper end of cross arm, bilateral symmetry rotates between the cross arm and installs the pivot, be connected with a belt between the front end of pivot of belt left end and the output axle head of motor, no. two belts are located the front side of a belt, the middle part winding of pivot has the steel cable, the expansion end system of steel cable winds on the handle, the net basket has been arranged to the below of motor, the top cap joint is in the upper end of net basket, the up end at same top cap is installed to the handle, the card axle has the card axle to the bilateral symmetry joint, the one end that is close to the top cap center of arranging looks joint between the cross arm, put the thing section of thick bamboo from left to right equidistance in the net basket, the upper end of putting the thing section of thick bamboo is installed through screw-thread fit mode and is circular shape otter board, the up end of otter board does not contact with the upper end of top cap.
The sampling tube is vertically placed in the storage tube and filled with the storage tube in a manual mode, then the screen plate is sequentially installed, the top cover and the grid basket are connected, the clamping shaft is inserted to fix the top cover, then the movable end of the steel rope is fastened on the handle in a manual mode, at the moment, the grid basket and the top cover are integrally lifted, when groundwater in the pit is required to be extracted, the inserting rod is rotated while the inserting rod is rotated to enable the inserting rod to be inserted into soil beside the pit in a manual mode, so that the whole device is fixed, the grid basket is lifted in the pit, then the rotating shaft is driven to synchronously rotate through the motor, the steel rope is synchronously unreeled through the rotating shaft, the grid basket synchronously penetrates into the pit gradually until the top cover is immersed into the groundwater in the pit, the grid basket, the storage tube and the sampling tube are fully filled with the groundwater, the extraction work of the groundwater is completed until the grid is pulled out of the pit, then the clamping shaft, the top cover and the screen plate are sequentially detached in a manual mode, the sampling tube is immediately taken out, and when the upper end of the pit is provided with a cement baffle, namely, the cement baffle is arranged on the horizontal side of the pit, and the horizontal operation is carried out in a similar mode.
The first preferred technical scheme is as follows: the upper end of support piece rotate through the side of round pin axle with the cross arm and be connected, slot No. one has been seted up to the upper end of support piece, the terminal surface bilateral symmetry has been seted up No. two slot groups before the cross arm, the quantity of slot No. two of every group is two, the adjacent slot is mutually perpendicular No. two, the joint has the picture peg between slot No. two corresponding slots of slot and position, when the cement that hole upper end was equipped with encloses the diameter of keeping off great, extract the picture peg through the manual mode, then upwards rotate support piece to it be the horizontality, total transverse dimension between support piece and the cross arm has obtained the extension, insert the picture peg corresponding position so that support piece keeps the level afterwards.
And the second preferred technical scheme is as follows: the support piece include built-in board, external board, T template and gag lever post, the upper end at the built-in board is seted up to slot, the T template is installed through round pin axle front and back symmetry rotation to the built-in board lower extreme, T template slidable mounting is in the external inboard that the middle part is hollow structure, the hole groove has been seted up to the preceding terminal surface lower extreme of built-in board, the hole groove is located the top of T template, the joint has the gag lever post between the upper end of hole groove and external board, gag lever post is mutually perpendicular with external board, under the condition that has one fixed external board, upwards lift the cross arm through another, the cross arm drives built-in board synchronous motion, built-in board drives T template synchronous motion, the total length of built-in board and external board has obtained the extension, after the hole groove of built-in board lower extreme moves to relevant position, insert the gag lever post through manual mode in order to obtain relative fixation between built-in board and the external board, make it insert the soil beside the hole through manual mode limit rotation grid, the total longitudinal length of support piece can prolong, in order to make the convenient dismouting basket of operating personnel obtain the work efficiency of groundwater.
And the preferred technical scheme is as follows: the lower end face of the cross arm and the side end face of the external plate, which is close to the grid basket, are provided with rubber strips, and the rubber strips can improve the friction force between the cross arm and the cement fence arranged at the upper end of the pit, so that the stability of the cross arm on the cement fence is improved, and the influence rate of external factors on groundwater sampling work is reduced.
The preferable technical scheme is as follows: the utility model provides a net basket from last equidistance down arrange, the handle is installed at the up end of the nearest top cap of cross arm, link to each other through the expansion plate between the up end of the lower terminal surface of adjacent net basket and top cap, the expansion plate bilateral symmetry arranges, the joint has the axostylus axostyle between the fixed section of expansion plate and its expansion section, the front end of expansion plate is followed down equidistant from last to leave and is equipped with the joint through-hole, the axostylus axostyle is located the joint through-hole, the net basket is provided with a plurality of benefits and does: the underground water sampling device has the advantages that synchronous independent sampling of underground water at different depths can be realized, further the accuracy of the underground water sampling detection results at the same subsequent position can be improved, the distance between adjacent grid baskets can be changed through cooperation between the telescopic plate and the shaft rod, and the underground water sampling depth range of the device is enlarged on the basis.
The preferable technical scheme is as follows: the left end and the right end of the cross arm are of telescopic structures, when the diameter of a pit without a cement fence is large, the side ends of the cross arm can be pulled manually to increase the total transverse length of the cross arm, so that the device can span and be fixed at the upper end of the pit.
The preferable technical scheme is as follows: the T-shaped plate is characterized in that a first through groove is formed in the lower end of the front end face of the T-shaped plate, a second through groove is formed in one side, close to the grid basket, of the T-shaped plate, the first through groove is perpendicular to the second through groove, when the diameter of a pit hole without a cement enclosing baffle is too large, the insertion plate is pulled out manually on the basis that the cross arm is elongated, then the support piece is rotated upwards to be in a horizontal state, the total transverse dimension between the support piece and the cross arm is prolonged, then under the condition that one person fixes the external plate, the cross arm is lifted upwards by another person, the cross arm drives the internal plate to synchronously move, the internal plate drives the T-shaped plate to synchronously move, the total length of the internal plate and the external plate is prolonged, after the lower end of the internal plate is located above the external plate, the external plate is rotated downwards in a manual mode, the external plate drives the T-shaped plate to synchronously rotate until the external plate is perpendicular to the internal plate, a clamping plate used with the first through groove is inserted to relatively fix the internal plate and the external plate, and the distance between the internal plate and the external plate is sufficiently enlarged, and soil is inserted by the manual insertion method.
The preferred technical scheme is as follows: extension plates are symmetrically installed at the left and right ends of the telescopic sections of the telescopic plates, the extension plates are connected with the lower ends of the grid baskets through bolts, and whether a plurality of grid baskets are assembled or not can be selected according to actual sampling conditions under the condition of the extension plates, the bolts and the telescopic plates, and meanwhile the whole device is convenient to carry and transport.
The eighth preferred technical scheme is as follows: the inner bottom wall of the grid basket is provided with circular grooves in a left-to-right equidistant manner, the lower end of the storage barrel is connected with the circular grooves in a threaded fit manner, and the movable connection manner adopted between the storage barrel and the grid basket can facilitate comprehensive cleaning of the grid basket and the storage barrel so as to avoid the influence of impurities attached to the surface on the underground water sampling detection result.
The invention has the following beneficial effects: 1. the underground water sampling pretreatment device designed by the invention adopts the design concept of double fixing modes and multiple protections, has the double functions of directly fixing and hoisting on the ground, and further can better adapt to the working environment of underground water sampling.
2. The mesh basket provided by the invention has the following advantages: the underground water sampling device has the advantages that the underground water at different depths can be synchronously and independently sampled, the accuracy of the underground water sampling detection results at the same subsequent position can be improved, meanwhile, the distance between adjacent grid baskets can be changed through the cooperation between the telescopic plate and the shaft rod, and the underground water sampling depth range of the device is enlarged on the basis.
3. The total transverse dimension between the support piece and the cross arm and the total longitudinal length of the support piece can be prolonged, on the basis, the adaptability of the whole device to the field is improved, and the grid basket is more convenient to assemble and disassemble.
4. The movable connection mode among the extension plate, the bolt and the expansion plate can facilitate the selection of whether to assemble a plurality of grid baskets according to the actual sampling condition, and is also convenient for the whole carrying and transportation of the device.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic perspective view of the present invention.
FIG. 2 is an overall perspective view of a mesh basket, a storage cylinder with a sampling tube and a screen.
Fig. 3 is a front view of fig. 1.
Fig. 4 is a perspective view of a mesh basket and a structure to which the lower end of the mesh basket is connected.
Fig. 5 is a left side view of fig. 1.
Fig. 6 is a cross-sectional view taken along A-A of fig. 3.
Fig. 7 is a B-B cross-sectional view of fig. 5.
Fig. 8 is a perspective view of a cross arm, a structure to which the middle of the cross arm is attached, and a support.
Fig. 9 is a C-C cross-sectional view of fig. 5.
In the figure: 1. a cross arm; 10. a rubber strip; 2. a support; 20. inserting plate; 21. a built-in plate; 22. an external plate; 23. t-shaped plates; 24. a limit rod; 3. a rod; 4. a placement mechanism; 40. a motor; 41. a rotating shaft; 42. a first belt; 43. a second belt; 44. a steel rope; 45. a handle; 46. a top cover; 47. a mesh basket; 470. a telescoping plate; 471. a shaft lever; 472. an extension plate; 473. a bolt; 48. a clamping shaft; 49. a storage cylinder; 490. a screen plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 5, an underground water sampling pretreatment device comprises a cross arm 1, a supporting piece 2, an inserting rod 3 and a placing mechanism 4, wherein the cross arm 1 is arranged in a front-back symmetrical mode, the supporting piece 2 is symmetrically arranged at the left end and the right end of the cross arm 1, the cross arm 1 is perpendicular to the supporting piece 2, the inserting rod 3 is rotatably arranged at the lower end of the supporting piece 2, and the placing mechanism 4 is arranged between the cross arms 1.
Referring to fig. 1, fig. 2, fig. 3 and fig. 8, the placement mechanism 4 includes a motor 40, a rotating shaft 41, a first belt 42, a second belt 43, a steel rope 44, a handle 45, a top cover 46, a grid basket 47, clamping shafts 48, a storage cylinder 49 and a screen 490, the motor 40 is installed between the upper ends of the cross arms 1, the rotating shaft 41 is installed in a bilateral symmetry rotation manner between the cross arms 1, the first belt 42 is connected between the front ends of the rotating shafts 41, the second belt 43 is connected between the forefront end of the rotating shaft 41 at the left end of the belt and the output shaft end of the motor 40, the second belt 43 is located at the front side of the first belt 42, the middle part of the rotating shaft 41 is wound with the steel rope 44, the movable end of the steel rope 44 is wound on the handle 45, the grid basket 47 is arranged below the motor 40, the top cover 46 is clamped at the upper end of the grid basket 47, the front end and the rear end of the top cover 46 is symmetrically clamped with the clamping shafts 48, one end, which is close to the center of the top cover 46, is clamped with the upper end of the grid basket 47, the upper end 49 is arranged in a circular manner and is not contacted with the screen 490, and the top cover 49 is placed at the upper end of the top cover 46, and the screen 490 is not contacted with the upper end of the top cylinder is placed in a circular manner.
The sampling tube is vertically placed in the storage cylinder 49 and filled with the storage cylinder 49 in a manual mode, then the screen plate 490 is sequentially installed, the top cover 46 and the grid basket 47 are connected, the clamping shaft 48 is inserted to fix the top cover 46, then the movable end of the steel rope 44 is fastened on the handle 45 in a manual mode, at the moment, the grid basket 47 and the top cover 46 are integrally lifted, when groundwater in the pit needs to be extracted, the inserting rod 3 is manually rotated while the inserting rod is inserted into soil beside the pit, so that the whole device is fixed, the grid basket 47 is lifted in the pit, then the motor 40 drives the rotating shaft 41 to synchronously rotate, the rotating shaft 41 synchronously unwinds the steel rope 44, the grid basket 47 synchronously and gradually penetrates into the pit until the top cover 46 is immersed into the groundwater in the pit, the groundwater is filled with the grid basket 47, the storage cylinder 49 and the sampling tube, then the rotating shaft 41 is synchronously rotated through the motor 40, the rotating shaft 41 synchronously winds up until the grid basket 47 is pulled out, then the clamping shaft 48 and the top cover 46 are sequentially removed in a manual mode, the cement retaining structure is arranged, and the cement retaining structure is arranged on the pit, and the cement retaining structure is similar to the underground structure when the underground structure is arranged on the pit, and the underground structure is horizontally placed on the underground structure.
Compared with the direct hoisting sampling pipe for sampling groundwater, the grid basket 47 and the storage cylinder 49 arranged in the device can play a role in protecting the sampling pipe under the condition that the sampling pipe is not blocked from being filled with groundwater, so that the sampling pipe is prevented from being directly impacted against the pit wall to be damaged, and substances such as falling soil and the like fall into the sampling pipe due to impact, the grid basket 47 can also block large-volume impurities in the pit hole from affecting the use of the sampling pipe, and meanwhile, the device has the dual functions of direct ground fixation and hoisting, and can be better adapted to the working environment of sampling groundwater.
Referring to fig. 3 and 4, the mesh basket 47 is arranged from top to bottom equidistantly, the handle 45 is installed on the upper end face of the top cover 46 nearest to the cross arm 1, the lower end faces of the adjacent mesh baskets 47 are connected with the upper end face of the top cover 46 through the expansion plates 470, the expansion plates 470 are symmetrically arranged left and right, the shaft rods 471 are clamped between the fixed sections of the expansion plates 470 and the expansion sections of the expansion plates, the front ends of the expansion plates 470 are provided with clamping through holes from top to bottom equidistantly, the shaft rods 471 are located in the clamping through holes, and the mesh basket 47 is provided with the following advantages: the synchronous independent sampling of groundwater at different depths can be realized, and the accuracy of the subsequent groundwater sampling detection result at the same place can be improved, the distance between adjacent grid baskets 47 can be changed through the cooperation between the telescopic plate 470 and the shaft rod 471, and the sampling depth range of the device for groundwater is enlarged on the basis.
Referring to fig. 6, 7 and 9, the inner bottom wall of the mesh basket 47 is provided with circular grooves equidistantly from left to right, the lower end of the storage barrel 49 is connected with the circular grooves in a threaded fit manner, and the movable connection manner adopted between the storage barrel 49 and the mesh basket 47 can facilitate comprehensive cleaning of the mesh basket 47 and the storage barrel 49 so as to avoid impurities attached to the surface from affecting the ground water sampling detection result.
Referring to fig. 3 and 4, the upper end of the expansion section of the expansion plate 470 is symmetrically provided with an extension plate 472, the extension plate 472 is connected with the lower end of the grid basket 47 through a bolt 473, and under the condition of the extension plate 472, the bolt 473 and the expansion plate 470, whether to assemble a plurality of grid baskets 47 can be selected according to the actual sampling condition, and meanwhile, the whole carrying and transportation of the device are facilitated.
Referring to fig. 1 and 8, the upper end of the support member 2 is rotatably connected with the side end of the cross arm 1 through a pin, a first slot is formed in the upper end of the support member 2, a second slot group is symmetrically formed in the front end face of the cross arm 1, the number of each second slot group is two, the adjacent second slots are vertical, a plugboard 20 is clamped between the first slot and the second slot corresponding to the first slot, when the diameter of a cement fence arranged at the upper end of a pit is large, the plugboard 20 is pulled out manually, then the support member 2 is rotated upwards to be in a horizontal state, the total transverse dimension between the support member 2 and the cross arm 1 is prolonged, and then the plugboard 20 is inserted into the corresponding position to keep the support member 2 horizontal.
Referring to fig. 3, fig. 7, fig. 8 and fig. 9, the support 2 comprises an inner plate 21, an outer plate 22, a T-shaped plate 23 and a limiting rod 24, a slot is formed at the upper end of the inner plate 21, the lower end of the inner plate 21 is provided with the T-shaped plate 23 through front-back symmetrical rotation of a pin shaft, the T-shaped plate 23 is slidably mounted in the outer plate 22 with a hollow middle part, the lower end of the front end surface of the inner plate 21 is provided with a hole groove, the hole groove is positioned above the T-shaped plate 23, a limiting rod 24 is clamped between the hole groove and the upper end of the outer plate 22, the limiting rod 24 is perpendicular to the outer plate 22, under the condition that one person fixes the outer plate 22, the cross arm 1 drives the inner plate 21 to synchronously move, the inner plate 21 and the T-shaped plate 23 synchronously move, after the hole groove at the lower end of the inner plate 21 moves to the corresponding position, the limiting rod 24 is inserted into the outer plate 22 in a manual mode, so that the space between the inner plate 21 and the outer plate 22 is relatively fixed, then the hole 3 is rotated and the soil is inserted into the soil beside the basket by the manual mode, the hole 3 is more conveniently, the overall length of the soil can be conveniently removed and installed and removed, and removed by the person can be more conveniently, and removed by the person can be supported.
Referring to fig. 8, a first through groove is formed at the lower end of the front end surface of the T-shaped plate 23, a second through groove is formed at one side of the T-shaped plate 23, which is close to the grid basket 47, the second through groove is formed at the lower end of the front end surface of the inner plate 21, the first through groove is perpendicular to the second through groove, when the diameter of a pit hole without a cement fence is too large, the insert plate 20 is pulled out manually on the basis that the cross arm 1 is elongated, then the support member 2 is rotated upwards to be in a horizontal state, the total transverse dimension between the support member 2 and the cross arm 1 is prolonged, then the cross arm 1 drives the inner plate 21 to synchronously move by another person, the inner plate 21 drives the T-shaped plate 23 to synchronously move, after the lower end of the inner plate 21 is located above the outer plate 22, the outer plate 22 is rotated downwards manually, the outer plate 22 drives the T23 to synchronously rotate until the outer plate 22 is perpendicular to the inner plate 21, then the support member 2 is inserted into the inner plate 21 to be in a horizontal state, the inner plate 21 is inserted into the corresponding to the corresponding hole through groove, and then the soil is fixed by a side of the insert rod 3, and the soil is extended by the side of the insert plate is fixed by the insert plate 3.
Referring to fig. 1 and 8, the lower end face of the cross arm 1 and the side end face of the external plate 22, which is close to the grid basket 47, are provided with rubber strips 10, and the rubber strips 10 can improve the friction between the cross arm 1 and the cement fence arranged at the upper end of the pit, so as to improve the stability of the cross arm 1 on the cement fence, and further reduce the influence rate of external factors on the groundwater sampling work.
Referring to fig. 8, the left and right ends of the cross arm 1 are telescopic structures, and when the diameter of the pit without the cement fence is large, the lateral ends of the cross arm 1 can be pulled manually to increase the total lateral length of the cross arm 1, so that the device can span and be fixed at the upper end of the pit.
When the groundwater sampling pretreatment device works, in the first step, under the condition that one person fixes the external plate 22, the cross arm 1 is lifted upwards by the other person, the cross arm 1 drives the internal plate 21 to synchronously move, the internal plate 21 drives the T-shaped plate 23 to synchronously move, the total length of the internal plate 21 and the external plate 22 is prolonged, and after the hole groove at the lower end of the internal plate 21 moves to the corresponding position, the limiting rod 24 is inserted manually to enable the internal plate 21 and the external plate 22 to be relatively fixed.
Secondly, the sampling tube is vertically placed in the storage cylinder 49 and filled with the storage cylinder 49 by manual means, then the installation of the screen plate 490 and the connection between the top cover 46 and the mesh basket 47 are sequentially performed, then the clamping shaft 48 is inserted to fix the top cover 46, the corresponding number of mesh baskets 47 are assembled by using the extension plates 472, the bolts 473 and the expansion plates 470 according to the actual sampling situation, then the movable ends of the steel ropes 44 are fastened on the handle 45 by manual means, and then the mesh basket 47 is integrally placed in the pit hole, and the mesh basket 47 and the top cover 46 are integrally lifted.
Thirdly, when groundwater in the pit needs to be extracted, the inserting rod 3 is rotated manually and inserted into soil beside the pit, so that the whole device is fixed, the grid basket 47 is hoisted in the pit, then the motor 40 drives the rotating shaft 41 to synchronously rotate, the rotating shaft 41 synchronously unwinds the steel rope 44, the grid basket 47 synchronously gradually penetrates into the pit until the top cover 46 is immersed into the groundwater in the pit, the grid basket 47, the storage cylinder 49 and the sampling tube are filled with groundwater, the groundwater extraction work is completed, then the motor 40 drives the rotating shaft 41 to synchronously rotate, the rotating shaft 41 synchronously winds the steel rope 44 until the grid basket 47 is pulled out of the pit, then the clamping shaft 48, the top cover 46 and the screen 490 are sequentially detached manually, and then the sampling tube filled with the groundwater is taken out.
If the diameter of the pit hole is too large, the plugboard 20 is pulled out manually on the basis that the cross arm 1 is extended, then the supporting piece 2 is rotated upwards to be in a horizontal state, the total transverse dimension between the supporting piece 2 and the cross arm 1 is prolonged, then under the condition that one person fixes the external board 22, the cross arm 1 is lifted upwards by the other person, the internal board 21 drives the internal board 21 to synchronously move, the internal board 21 drives the T-shaped board 23 to synchronously move, the total length of the internal board 21 and the external board 22 is prolonged, after the lower end of the internal board 21 is positioned above the external board 22, the external board 22 is rotated downwards manually, the external board 22 drives the T-shaped board 23 to synchronously rotate until the external board 22 is perpendicular to the internal board 21, then a clamping board matched with the first through groove is inserted to relatively fix the internal board 21 and the external board 22, and the distance between the plugboards 3 is sufficiently enlarged.
When the pit upper end is equipped with cement and encloses the fender, when similar well structure promptly, through the manual mode between cross arm 1 level put in the upper end that the cement enclosed the fender, later groundwater sampling operation is the same with above-mentioned operation, if the cement encloses when keeping in the diameter great, pulls out picture peg 20 through the manual mode, then upwards rotates support piece 2 to it be the horizontality, and the total transverse dimension between support piece 2 and the cross arm 1 obtains the extension, still can lengthen cross arm 1 and further increase the total transverse dimension between support piece 2 and the cross arm 1 simultaneously to cross arm 1 can put in the cement and enclose the fender upper end.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a groundwater sample pretreatment device, includes cross arm (1), support piece (2), inserted bar (3) and placement machine construct (4), its characterized in that: the cross arms (1) are arranged in a front-back symmetrical mode, supporting pieces (2) are symmetrically arranged at the left end and the right end of each cross arm (1), the cross arms (1) are perpendicular to the supporting pieces (2), inserting rods (3) are rotatably arranged at the lower ends of the supporting pieces (2), and a placing mechanism (4) is arranged between the cross arms (1);
The placement mechanism (4) comprises a motor (40), a rotating shaft (41), a first belt (42), a second belt (43), a steel rope (44), a handle (45), a top cover (46), a grid basket (47), a clamping shaft (48), a storage cylinder (49) and a screen plate (490), wherein the motor (40) is arranged between the upper ends of the cross arms (1), the rotating shaft (41) is arranged between the cross arms (1) in a bilateral symmetry rotating way, the first belt (42) is connected between the front ends of the rotating shaft (41) at the left end of the belt, the second belt (43) is connected between the foremost end of the rotating shaft (41) at the left end of the belt and the output shaft end of the motor (40), the second belt (43) is positioned at the front side of the first belt (42), the middle part of the rotating shaft (41) is wound with the steel rope (44), the movable end of the steel rope (44) is wound on the handle (45), the grid basket (47) is arranged below the motor (40), the top cover (46) is clamped at the upper end of the grid basket (47), the handle (45) is arranged on the upper end of the top cover (46) at the same end of the top cover (46), the clamping shaft (46) is clamped at the front end of the top cover (46) and is arranged close to the center of the top cover (46), the storage barrels (49) are equidistantly arranged in the grid basket (47) from left to right, a circular screen plate (490) is arranged at the upper end of the storage barrels (49) in a threaded fit mode, and the upper end face of the screen plate (490) is not contacted with the upper end of the top cover (46);
The upper end of the support piece (2) is rotationally connected with the side end of the cross arm (1) through a pin shaft, a first slot is formed in the upper end of the support piece (2), a second slot group is symmetrically formed in the left-right direction of the front end face of the cross arm (1), the number of each second slot group is two, the adjacent second slots are perpendicular, and a plugboard (20) is clamped between the first slot and the second slot corresponding to the position;
The supporting piece (2) comprises an inner plate (21), an outer plate (22), a T-shaped plate (23) and a limiting rod (24), wherein a first slot is formed in the upper end of the inner plate (21), the T-shaped plate (23) is symmetrically installed at the lower end of the inner plate (21) in a front-back rotation mode through a pin shaft, the T-shaped plate (23) is slidably installed in the outer plate (22) with a hollow middle part, a hole groove is formed in the lower end of the front end face of the inner plate (21), the hole groove is located above the T-shaped plate (23), the limiting rod (24) is clamped between the hole groove and the upper end of the outer plate (22), and the limiting rod (24) is perpendicular to the outer plate (22);
The T-shaped plate (23) is characterized in that a first through groove is formed in the lower end of the front end face of the T-shaped plate (23), a second through groove is formed in one side, close to the grid basket (47), of the T-shaped plate (23), and the second through groove is formed in the lower end of the front end face of the built-in plate (21) and is perpendicular to the first through groove.
2. The groundwater sampling pretreatment device according to claim 1, wherein: rubber strips (10) are arranged on the lower end face of the cross arm (1) and the side end face, close to the grid basket (47), of the external plate (22).
3. The groundwater sampling pretreatment device according to claim 1, wherein: the utility model discloses a net basket (47) from last equidistance down arrange, handle (45) are installed in the up end of top cap (46) nearest to cross arm (1), link to each other through expansion plate (470) between the lower terminal surface of adjacent net basket (47) and the up end of top cap (46), expansion plate (470) bilateral symmetry arranges, the joint has axostylus axostyle (471) between the fixed section of expansion plate (470) and its expansion section, the front end of expansion plate (470) is followed from last equidistance down and is left and be equipped with the joint through-hole, axostylus axostyle (471) are located the joint through-hole.
4. The groundwater sampling pretreatment device according to claim 1, wherein: the left end and the right end of the cross arm (1) are of telescopic structures.
5. A groundwater sampling pretreatment device according to claim 3, wherein: extension plates (472) are symmetrically arranged at the upper ends of the extension sections of the extension plates (470), and the extension plates (472) are connected with the lower ends of the grid baskets (47) through bolts (473).
6. The groundwater sampling pretreatment device according to claim 1, wherein: the inner bottom wall of the grid basket (47) is provided with round grooves at equal intervals from left to right, and the lower end of the storage barrel (49) is connected with the round grooves in a threaded fit mode.
CN202111293616.9A 2021-11-03 2021-11-03 Groundwater sample pretreatment device Active CN114002020B (en)

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