CN109596394A - A kind of environmental project detection water source sampler with storage function - Google Patents

A kind of environmental project detection water source sampler with storage function Download PDF

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Publication number
CN109596394A
CN109596394A CN201811584901.4A CN201811584901A CN109596394A CN 109596394 A CN109596394 A CN 109596394A CN 201811584901 A CN201811584901 A CN 201811584901A CN 109596394 A CN109596394 A CN 109596394A
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China
Prior art keywords
plate
support
welded
water source
storage function
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CN201811584901.4A
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CN109596394B (en
Inventor
吴英
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Leto anda (Shanghai) Environmental Engineering Technology Co.,Ltd.
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吴英
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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
    • G01N1/16Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels

Abstract

The present invention provides a kind of environmental project detection water source sampler with storage function, including horizontal abuts against plate, intermediate fagging, bar of tying tight, slider box and T shape locating rod;The bottom welding of support mounting plate head end position is hung and has sunpender at one, and the end of this sunpender is arranged with circular top backup plate at one, and the bottom support of circular top backup plate is hung cover board at one;The sliding strut supporting welding is set to the top of cover board, and in-between section is upwardly extended to run through and is welded at the outer eaves position of circular top backup plate, and its head end continues up support and extends through support mounting plate;The top of the sliding strut is welded with connecting plate at one, this top connection board overhead is on the top end face of support mounting plate, and it slides strut and is also welded with connecting plate at one in the rod segment between circular top backup plate and cover board, the setting of rotational positioning bar of the present invention, rotational positioning bar can be rotatably assorted grafting with two director's bar grooves, put the pick-and-place of just filter cover.

Description

A kind of environmental project detection water source sampler with storage function
Technical field
The invention belongs to water source samplers, environmental project facility technology field, more specifically, in particular to a kind of ring Water source sampler of the border engineering detecting with storage function.
Background technique
With the development of society, industrial technology is also constantly in progress, but industrial pollution is also following, Ren Leisheng The problem of environment living also deteriorates constantly, and environmental problem is very important, and water is the Source of life of the mankind, water pollution is especially heavy Greatly, thus we there is an urgent need for a kind of devices to detect the excellent of water quality.
By retrieving the patent of such as Patent No. CN104297017B, a kind of sampler is disclosed.To overcome at present In use, the present invention provides water sampling unit, including a sampling to the deep water sampling bucket used Cup, the bottom of sampling cup are provided with circular through hole, and through-hole is equipped with cover board, and cover board and staving bottom resilient are hinged, it is characterised in that: It further include sampling glass stand, in the fixed pulling rope in the top of sampling glass stand;The pulling rope is equipped with freely slidable magnetic induction Set is successively fixed several Hall sensors by set distance in the inside of pulling rope, each Hall sensor respectively with drawing tail of rope The controller at end is electrically connected;It is equipped with a magnetic induction coil in sampling glass stand bottom, is equipped with a magnetic pole at the back side of the cover board, when After cover board opens, the top face of magnetic pole and magnetic induction coil;The sampling cup, sampling glass stand density of material be greater than watertight Degree.The water sampling unit can be widely applied in the water sampling operation of the departments such as environmental protection, epidemic prevention.
Such as patent of Patent No. CN106442014B again, discloses a kind of water quality sampling device, comprising: device noumenon (1), described device ontology (1) under the driving of first driving device (2) can front and rear, left and right, move up and down;It is set to the dress Set at least one sampling water column (3) on ontology (1);The sampling water column (3) extends along the vertical direction and has opening up and down; And it is located at the shielding plate (4) of sampling water column (3) two sides up and down, drive of the shielding plate (4) in the second driving device (5) The upper and lower opening of sampling water column (3) is opened simultaneously or sealed under dynamic.The water quality sampling device solves existing sampling of water quality Device cannot accurately carry out position positioning and the lower problem of sampling efficiency.
Based on patent at above-mentioned two and prior art people is combined to find, although existing water source sampler can Conventional use is carried out, but it exists in practical applications, Stratified Sampling operation is more inconvenient, and it is easy to contain the layered water sample taken Composite pollution by different water levels water source causes the deviation of subsequent detection data, in addition samples holding vessel in device noumenon Installing and dismounting operation be only more inconvenient problem.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of detections of environmental project to be taken with the water source with storage function Sampling device, it is more inconvenient to solve existing water source sampler Stratified Sampling operation, and the layered water sample taken is contained vulnerable to difference The composite pollution at water layer water source causes the deviation of subsequent detection data, in addition samples holding vessel and tears open in the installation in device noumenon Unloading operation is only more inconvenient problem.
The environmental project of the present invention detection purpose with the water source sampler of storage function and, by detail below Technological means is reached:
A kind of environmental project detection water source sampler with storage function, including main supporting steel pipe, step on frame, lift Bar, connecting plate, sampling cup, casing, filter cover, rotational positioning bar, central support tube, support mounting plate refer to frame, sunpender, sliding support Bar, circular top backup plate, cover board, support frame are horizontal to abut against plate, intermediate fagging, bar of tying tight, slider box and T shape locating rod;The master Supporting steel pipe is stainless steel alloy material, presents lower equidistant interval in the circumferential wall of lower semisection and is welded with support mounting plate at three With three at support frame, and its top is welded at one lifting barre;The bottom welding of support mounting plate head end position is hung There is a sunpender at one, the end of this sunpender is arranged with circular top backup plate at one, and the bottom support of circular top backup plate is hung and has at one Cover board;The sliding strut supporting welding is set to the top of cover board, and in-between section is upwardly extended and leaned on through being welded in circular top At the outer eaves position of plate, and its head end continues up support and extends through support mounting plate;The top welding of the sliding strut There is connecting plate at one, this top connection board overhead slides strut and leans on positioned at circular top on the top end face of support mounting plate Also connecting plate at one is welded in rod segment between plate and cover board;In outer circumferential walls at three at the sampling cup top end opening Offer external screw thread, be symmetrically welded with square bushing at two on bottom plate, and this at two casing correspond to sliding sleeve and insert in support frame Left and right support inserted link on, and then sampling cup is slidably disposed at three respectively on support frame at three;The slider box is by its rear end Slide plate and bilateral symmetry be supported on the slide plate of rear end two at supporting linkage collectively constitute, wherein rear end slide plate slides are placed on On the intermediate slide bar of T shape locating rod, and supporting linkage is corresponding together with T shape locating rod electric welding connection at two;The cover board Bottom end face on be adhesive with one layer of rubber pad;It welds to be provided at one between the connecting plate and lifting rod at top one and refer to Frame.
Further, supporting welding has central support tube at one at the center of bottom plate on the inside of the sampling cup, this center branch The top rotation of stay tube is provided with rotational positioning bar at one, and is arranged at four parts of tripartite's height of central support tube and is welded with one Locate apical ring and slide to be provided with slip ring at one, spring at one is arranged in the rod segment between here slip ring and apical ring.
Further, run through at the center of the cross bracket of the filter cover and offer through-hole at one, and cross bracket Upper bilateral symmetry is also symmetrically protruded in front and back be supported by card slot at two thereon through two director's bar grooves are offered, and filter cover is just led to Cross the top that above-mentioned central through hole set inserts in central support tube.
Further, what the end symmetrical of the main supporting steel pipe was welded with rectangular triangle setting at two steps on frame, this Frame is stepped at two together with the left and right support inserted link electric welding connection of support frame at the one of bottommost.
Further, about the support frame support inserted link between be welded in be connected with it is horizontal at one abut against plate, this The horizontal middle for abutting against plate be symmetrically supported by forward at two again among fagging, and T shape locating rod just rotate be placed in this at two in Between between fagging.
Further, it is also arranged with spring at one on the intermediate slide bar of the T shape locating rod, this spring is located at intermediate slide bar Between the circular baffle plate of head end and the rear end slide plate of slider box, and bar of tying tight the above-mentioned spring of pull sliding compression and can rotate forward It is placed at support inserted link head end to offer about support frame two in card slot.
Further, be arranged with spring at one on the sunpender, this spring be located at support mounting plate and circular top backup plate it Between, and then spring push lower cover plate is placed on the top end opening of sampling cup by press sealing.
Further, the lifting rod is closely set in the inside of main supporting steel pipe, and successively sliding extends through at three Support mounting plate and together with connecting plate supporting welding at all six.
Compared with prior art, the invention has the following beneficial effects:
When sampling cup is all immersed in water at three, cover board while the sampling cup from three at three can be made by above mentioning lifting rod Lift on top end opening, carry out Stratified Sampling, lifting rod is unclamped after to be sampled, at three cover board at three three on sunpender at bullet Reset closure under the pushing tow of spring, sampling cup water sample at three sealed, avoid it is upper propose device noumenon when different water levels water be mixed into It causes layered water sample to be mixed pollution at three inside sampling cup, causes subsequent detection data deviation.
Under the pushing tow of T shape locating rod upper spring, casing at two and sampling cup can be tied tight and be positioned at branch by bar of tying tight It is supported on inserted link about support frame, and bar of tying tight can be propped up efficiently about support frame pull extruding spring forward It supports and is detached in the card slot of inserted link head end, and then slide unloading for sampling cup and convenience is provided
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is three dimensional structure diagram of the present invention.
Fig. 3 is that cover board of the present invention holds out against lid conjunction state schematic diagram.
Fig. 4 is that cover board of the present invention above mentions opening state schematic diagram.
Fig. 5 is sampling cup grafting mounting structure schematic diagram of the present invention.
Fig. 6 is that the present invention ties tight bar rotating opening status architecture schematic diagram.
Fig. 7 is sampling cup schematic diagram of internal structure of the present invention.
Fig. 8 is central support tube slicing schematic diagram of internal structure of the present invention.
In figure, the corresponding relationship of component names and accompanying drawing number are as follows:
The main supporting steel pipe of 1-, 101- step on frame, 2- lifting rod, 201- connecting plate, 3- sampling cup, 301- casing, 302- filter cover, 303- rotational positioning bar, 304- central support tube, 4- support mounting plate, 401- refer to that frame, 402- sunpender, 5- slide strut, 6- circle Shape abuts against plate, 7- cover board, 8- support frame, and 801- is horizontal to abut against plate, fagging among 8011-, and 9- ties tight bar, 901- slider box, 10- T shape locating rod.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment is used for Illustrate the present invention, but cannot be used to limit the scope of the invention.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more;Term " on ", The orientation or positional relationship of the instructions such as "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair Limitation of the invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and should not be understood as instruction or Imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connected " " connects Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected;It can be machine Tool connection, is also possible to be electrically connected;It can be directly connected, it can also be indirectly connected through an intermediary.For this field For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Embodiment:
As shown in attached drawing 1 to attached drawing 8:
The present invention provides a kind of environmental project detection water source sampler with storage function, including main supporting steel pipe 1, step on frame 101, lifting rod 2, connecting plate 201, sampling cup 3, casing 301, filter cover 302, rotational positioning bar 303, central support tube 304, support mounting plate 4 refers to frame 401, sunpender 402, slides strut 5, circular top backup plate 6, cover board 7, and support frame 8 is horizontal to abut against Plate 801, intermediate fagging 8011, bar 9 of tying tight, slider box 901 and T shape locating rod 10;The main supporting steel pipe 1 is stainless steel alloy Material presents lower equidistant interval in the circumferential wall of lower semisection and is welded at three support frame 8 at support mounting plate 4 and three, and its Top is welded with lifting barre at one;The bottom welding of the 4 head end position of support mounting plate is hung and has sunpender 402 at one, this The end of sunpender 402 is arranged with circular top backup plate 6 at one, and the bottom support of circular top backup plate 6 is hung cover board 7 at one;Institute The top that sliding 5 supporting welding of strut is set to cover board 7 is stated, in-between section, which upwardly extends to run through, is welded in circular top backup plate 6 At outer eaves position, and its head end continues up support and extends through support mounting plate 4;The top of the sliding strut 5 is welded with Connecting plate 201 at one, this 201 overhead of top connection board slide strut 5 and are located at circle on the top end face of support mounting plate 4 Shape abuts against and is also welded with connecting plate 201 at one in the rod segment between plate 6 and cover board 7;At three at 3 top end opening of sampling cup Offer external screw thread in outer circumferential walls, be symmetrically welded with square bushing 301 at two on bottom plate, and this at two casing 301 it is right Sliding sleeve is answered to insert on the left and right support inserted link of support frame 8, and then sampling cup 3 is slidably disposed within support frame 8 at three respectively at three On;The slider box 901 is supported in common group of two supporting linkages on the slide plate of rear end by its rear end slide plate and bilateral symmetry At wherein rear end slide plate slides are placed on the intermediate slide bar of T shape locating rod 10, and supporting linkage is corresponding fixed with T shape at two Position 10 electric welding connection of bar is together;One layer of rubber pad is adhesive on the bottom end face of the cover board 7;The connection at top one Welding, which is provided at one, between plate 201 and lifting rod 2 refers to frame 401.
Wherein, supporting welding has central support tube 304 at one at the center of 3 inside bottom plate of sampling cup, this central support tube 304 top rotation is provided with rotational positioning bar 303 at one, and is arranged weldering at four parts of tripartite's height of central support tube 304 It is connected to apical ring at one and sliding is provided with slip ring at one, spring at one is arranged in the rod segment between here slip ring and apical ring, Filter cover 302 can be abutted against and is positioned between rotational positioning bar 303 and slip ring under the pushing tow of spring, and rotational positioning bar 303 can To push up at be stuck on cross bracket two in card slot, filter cover 302 is from the top of sampling cup 3 when this just can be avoided sampling under water It floats and detaches in mouth in end.
Wherein, run through at the center of the cross bracket of the filter cover 302 and offer through-hole at one, and on cross bracket Bilateral symmetry is also symmetrically protruded in front and back be supported by card slot at two thereon through two director's bar grooves are offered, and filter cover 302 is just logical The top that above-mentioned central through hole set inserts in central support tube 304 is crossed, rotational positioning bar 303 can be rotatably assorted with two director's bar grooves The pick-and-place of just filter cover 302 is put in grafting.
Wherein, what the end symmetrical of the main supporting steel pipe 1 was welded with rectangular triangle setting at two steps on frame 101, this Frame 101 is stepped at two together with the left and right support inserted link electric welding connection of support frame 8 at the one of bottommost, fills sampling cup at three taking Main supporting steel pipe 1 need to be stood vertically and be against in the bosom of operating personnel when 3, both feet can be trampled at this time steps on frame 101 in Liang Chu, makes to fill It sets ontology and stablizes support, this is just to pull upwardly on lifting rod 2 and implement unloading to sampling cup 3 at three to provide convenience, and fills three taking Since the pull ring of 2 head end of lifting rod is higher when place's sampling cup 3, finger is difficult to hook drawing, can pass through and refer to that frame 401 pulls up lifting rod 2.
Wherein, about the support frame 8 support inserted link between be welded in be connected with it is horizontal at one abut against plate 801, this The horizontal middle for abutting against plate 801 is symmetrically supported by forward centre fagging 8011 at two again, and T shape locating rod 10 is placed in regard to rotation This at two among between fagging 8011, by T shape locating rod 10, bar 9 of tying tight rotation can be placed in the bottom of support frame 8 when idle Portion avoids the assembly of the grafting to sampling cup 3 from causing obstacle.
Wherein, it is also arranged with spring at one on the intermediate slide bar of the T shape locating rod 10, it is first that this spring is located at intermediate slide bar Between the circular baffle plate at end and the rear end slide plate of slider box 901, and tie tight bar 9 can forward the above-mentioned spring of pull sliding compression and turn It is dynamic to be placed at support inserted link head end to offer about support frame 8 two in card slot, on the top of 10 upper spring of T shape locating rod It pushes down, casing 301 at two and sampling cup 3 can be tied tight to be positioned at about support frame 8 and support inserted link by bar 9 of tying tight On, and bar 9 of tying tight pull extruding spring efficiently can take off from the card slot for supporting inserted link head end about support frame 8 forward It separates out and, and then slide unloading for sampling cup 3 and convenience is provided.
Wherein, be arranged with spring at one on the sunpender 402, this spring be located at support mounting plate 4 and circular top backup plate 6 it Between, and then spring push lower cover plate 7 is placed on the top end opening of sampling cup 3 by press sealing, cover board 7 can sealing cover set and take Sample cup 3, and it uses spring push sealing that can follow sliding compressed spring on lifting rod 2 that closing operation is easily opened and closed.
Wherein, the lifting rod 2 is closely set in the inside of main supporting steel pipe 1, and successively sliding extends through branch at three Mounting plate 4 and together with 201 supporting welding of connecting plate at all six is supportted, when sampling cup 3 is all immersed in water at three, Cover board 7 at three can be made while lift on the top end opening of sampling cup 3 from three by above mentioning lifting rod 2, carry out Stratified Sampling, to be sampled After unclamp lifting rod 2, at three cover board 7 at three three on sunpender 402 at spring pushing tow under reset closure, will sample at three Cup 3 water samples sealing, avoid it is upper propose device noumenon when different water levels water be mixed at three and cause layered water sample quilt inside sampling cup 3 Composite pollution causes subsequent detection data deviation.
The specifically used mode and effect of the present embodiment:
The whole height of the present apparatus be 2.2 meters, and at three 3 top of sampling cup just be open between spacing be 40cm.
All components are that stainless steel alloy material is made in device.
Main supporting steel pipe 1 is inserted into water, and make at three by process for using of the invention, operating personnel on speedboat or ship Sampling cup 3 is all immersed in water, and immersed depth can voluntarily be applicable in change according to sampling requirement, to sampling cup 3 at three by underthrust When being placed in designated depth, above mentioning lifting rod 2 makes cover board 7 at three open simultaneously carry out Stratified Sampling, after sampling that device is whole Body extraction simultaneously successively removes sampling cup 3 at three, and when removing at three, its top end opening screw thread should be tightened upper sealing by sampling cup 3 The sampling cup 3 being sealed at three is finally taken back disembarkation and detected by lid.
The embodiment of the present invention is given for the purpose of illustration and description, and is not exhaustively or by this to send out It is bright to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Choosing Selecting and describe embodiment is and to make those skilled in the art to more preferably illustrate the principle of the present invention and practical application It will be appreciated that the present invention is to design various embodiments suitable for specific applications with various modifications.

Claims (8)

1. a kind of environmental project detection water source sampler with storage function, it is characterised in that: environmental project detection Include main supporting steel pipe (1) with the water source sampler with storage function, steps on frame (101), lifting rod (2), connecting plate (201), sampling cup (3), casing (301), filter cover (302), rotational positioning bar (303), central support tube (304), support installation Plate (4) refers to frame (401) that sunpender (402) slides strut (5), circular top backup plate (6), cover board (7), support frame (8), horizontal top Backup plate (801), intermediate fagging (8011), bar of tying tight (9), slider box (901) and T shape locating rod (10);The main supporting steel pipe (1) be stainless steel alloy material, present in the circumferential wall of lower semisection lower equidistant interval be welded with support mounting plate at three (4) and Support frame (8) at three, and its top is welded with lifting barre at one;It welds the bottom of support mounting plate (4) the head end position Being hung has sunpender at one (402), and the end of this sunpender (402) is arranged with circular top backup plate (6) at one, and circular top backup plate (6) Bottom support be hung and have cover board at one (7);Described sliding strut (5) supporting welding is set to the top of cover board (7), among it Section is upwardly extended to run through and is welded at the outer eaves position of circular top backup plate (6), and its head end continues up support and extends through branch It supports mounting plate (4);The top of sliding strut (5) is welded with connecting plate at one (201), this top connection board (201) overhead In on the top end face of support mounting plate (4), and slides strut (5) and be located at the rod segment between circular top backup plate (6) and cover board (7) On be also welded with connecting plate at one (201);Outer spiral shell is offered in outer circumferential walls at three at sampling cup (3) top end opening Line is symmetrically welded with square bushing at two (301) on bottom plate, and this at two the corresponding sliding sleeve of casing (301) insert in support frame (8) on left and right support inserted link, and then sampling cup (3) is slidably disposed within respectively on support frame at three (8) at three;The slider box (901) it is collectively constituted by two supporting linkages that its rear end slide plate and bilateral symmetry are supported on the slide plate of rear end, wherein rear end Slide plate slides are placed on the intermediate slide bar of T shape locating rod (10), and supporting linkage is corresponding electric with T shape locating rod (10) at two Weldering links together;One layer of rubber pad is adhesive on the bottom end face of the cover board (7);The connecting plate at top one (201) it welds to be provided at one between lifting rod (2) and refers to frame (401).
2. the environmental project detection water source sampler with storage function as described in claim 1, it is characterised in that: described Supporting welding has central support tube at one (304) at the center of bottom plate on the inside of sampling cup (3), the top of this central support tube (304) End rotation is provided with rotational positioning bar (303) at one, and is arranged and is welded at four parts of tripartite's height of central support tube (304) At one apical ring and slide be provided with slip ring at one, spring at one is arranged in the rod segment between here slip ring and apical ring.
3. the environmental project detection water source sampler with storage function as described in claim 1, it is characterised in that: described Run through at the center of the cross bracket of filter cover (302) and offer through-hole at one, and symmetrically runs through on cross bracket and open It equipped with two director's bar grooves, is also symmetrically protruded in front and back be supported by card slot at two thereon, and filter cover (302) is just logical by above-mentioned center Hole covers the top for inserting in central support tube (304).
4. the environmental project detection water source sampler with storage function as described in claim 1, it is characterised in that: described What the end symmetrical of main supporting steel pipe (1) was welded with rectangular triangle setting at two steps on frame (101), this steps on frame (101) at two Together with the left and right support inserted link electric welding connection of support frame (8) at the one of bottommost.
5. the environmental project detection water source sampler with storage function as described in claim 1, it is characterised in that: described Supported about support frame (8) be connected in being welded between inserted link it is horizontal at one abut against plate (801), this is horizontal to abut against plate (801) middle be symmetrically supported by forward at two again among fagging (8011), and T shape locating rod (10) with regard to rotation be placed in this two Locate between intermediate fagging (8011).
6. the environmental project detection water source sampler with storage function as described in claim 1 or 5, it is characterised in that: It is also arranged with spring at one on the intermediate slide bar of the T shape locating rod (10), this spring is located at the round gear of intermediate slide bar head end Between plate and the rear end slide plate of slider box (901), and bar of tying tight (9) the above-mentioned spring of pull sliding compression and can rotate holding forward At support inserted link head end offers about support frame (8) two in card slot.
7. the environmental project detection water source sampler with storage function as described in claim 1, it is characterised in that: described Sunpender is arranged with spring at one on (402), this spring is located between support mounting plate (4) and circular top backup plate (6), and then spring Pushing tow lower cover plate (7) is placed on the top end opening of sampling cup (3) by press sealing.
8. the environmental project detection water source sampler with storage function as described in claim 1, it is characterised in that: described Lifting rod (2) is closely set in the inside of main supporting steel pipe (1), and successively sliding extends through support mounting plate at three (4) simultaneously Together with connecting plate (201) supporting welding at all six.
CN201811584901.4A 2018-12-24 2018-12-24 Environmental engineering detects with water source sampling device who has storage function Active CN109596394B (en)

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CN110308020A (en) * 2019-07-03 2019-10-08 王文惠 A kind of environmental monitoring multilayer depth sampler
CN112628039A (en) * 2020-12-18 2021-04-09 赵瑞霞 Intelligent electric fuel pump with electronic pressure regulator

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