CN210243267U

CN210243267U - Riverway sediment undisturbed sampler

Info

Publication number: CN210243267U
Application number: CN201920641819.4U
Authority: CN
Inventors: Xuewu Li; 李学武; Xiaoduo Liu; 刘晓朵; Bo Hou; 侯波; Jingmei Sun; 孙井梅
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-04-03
Anticipated expiration: 2029-05-07

Abstract

The utility model relates to a river course sediment original state sampler, including the sampling box body, the section of gradually expanding, end window and balancing weight, the sampling box body is integrated into one piece's cuboid tubular structure with the section of gradually expanding, seals the bottom opening of the section of gradually expanding after the end window is closed, and the end window comprises first end window piece and second end window piece, and first end window piece and second end window piece pass through hinge rotation with the both sides of controlling of the section of gradually expanding bottom respectively and are connected, and two other limits of the section of gradually expanding bottom are provided with the baffle respectively, and the balancing weight setting is in the side of cuboid sampling box body. The utility model discloses a river course sediment original state sampler has simple structure, convenient operation and sample advantages such as lamellar structure that can not destroy the sediment.

Description

Riverway sediment undisturbed sampler

Technical Field

The utility model relates to a water environment technical restoration field, in particular to riverway sediment original state sampler.

Background

When the river water is subjected to water pollution analysis, a worker usually detects the bottom mud of the river, the detected contents mainly comprise toxic substances of heavy metals or inorganic non-metallic substances, water content, organic matters and pH, and the condition of researching the bedding of the bottom mud also exists. Chinese patent publication No. CN202372378 discloses a deepwater sediment sampler, which comprises a left half grab, a right half grab and a grab support mechanism; the grab bucket supporting mechanism comprises a supporting rod, a sliding block, a base, a right lifting hook and a left lifting hook; the left lifting hook and the right lifting hook are respectively hinged with two side walls of the sliding block, and the lower ends of the left lifting hook and the right lifting hook can be respectively hooked on a first steel cable and a second steel cable on the left grab head and the right grab bucket; the spring is arranged on the supporting rod, and two ends of the spring are respectively contacted with the sliding block and the base; the upper end of the supporting rod is fixed with a hanging ring, the third steel cable passes through the hanging ring, and the two ends of the third steel cable respectively pass through the steel cable through holes at the two ends of the grab shaft and the steel cable through hole on the right grab bucket and then are connected with the left grab bucket.

However, when the sampler is used for taking sludge, the original layered structure of the sediment is damaged, so that the layered structure of the sediment in the river cannot be analyzed; meanwhile, the sampler has a complex structure and is inconvenient to carry, so that the sampler has low working efficiency, wastes time and labor and destroys the original layered structure of the sediment during sampling.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a river sediment original state sampler, this sampler simple structure, portable can remain the original lamellar structure of river sediment.

Another object of the utility model is to provide a river course bed mud original state sampling method, this method easy operation and do not destroy the original lamellar structure of bed mud.

The utility model discloses a realize through following technical scheme:

the utility model provides a river sediment undisturbed sampler, includes the sampling box and is fixed in the piece is carried to the sampling box upper end, form a cavity that holds the sediment that runs through in the sampling box, be provided with the lid on the open-top of sampling box, be formed with the apopore on the upper end lateral wall of sampling box, the lower part of sampling box forms a gradual expansion section that enlarges from the top down gradually, the bottom opening part of gradual expansion section is provided with the bottom window of run-on, the bottom window upwards overturns the laminating and is in during gradual expansion section inner wall, the partial edge salient of bottom window in gradual expansion section forms the atress portion, the bottom edge of gradual expansion section still is provided with the locating part, the bottom window is sealed when overturning to the locating part downwards the bottom opening.

In the above technical scheme, the cross sections of the sampling box and the divergent section are both square or rectangular.

In the above technical solution, the limiting member is a baffle fixedly connected to the bottom edge of the divergent section.

In the above technical solution, the bottom window is composed of a first bottom window piece and a second bottom window piece, the first bottom window piece and the second bottom window piece are respectively hinged to two bottom edges opposite to the gradually expanding section, and the edges of the first bottom window piece and the second bottom window piece are S-shaped curves or broken lines.

In the technical scheme, the lateral wall of the sampling box is externally fixed with a balancing weight, and the balancing weight is in a shape with thick middle and thin two ends.

In the above technical scheme, the balancing weight is bonded or welded outside the side wall of the sampling box.

In the above technical scheme, the counter weight piece quantity is 2 or 4, and when the quantity of counter weight piece was 2, 2 counter weight piece symmetries set up in two opposite sides of sampling the box, when the counter weight piece quantity was 4, 4 two bisymmetries of counter weight piece set up in on four sides of sampling the box.

In the technical scheme, the box cover is connected to the top opening of the sampling box in an interference mode.

In the technical scheme, the lifting piece comprises 2 annular handles and hemp ropes, wherein the annular handles are respectively fixed at two opposite sides of the upper part of the sampling box, and the hemp ropes are tied together by the end parts of the annular handles.

The sampling method of the undisturbed sampler for the bottom mud of the river comprises the following steps:

1. the sampling box covered with the box cover sinks by means of self gravity, the bottom window is upwards overturned and attached to the inner wall of the gradually expanding section under the action of bottom mud or water, the bottom opening is opened, the bottom mud enters the cavity through the bottom opening, the water in the cavity flows out through the water outlet hole, and the cavity is gradually filled with the bottom mud;

2. when the sampling box does not sink under the self gravity, the sampling box is lifted upwards through the lifting piece, the bottom mud in the cavity presses the stressed part downwards, the bottom window is turned downwards, and the bottom opening is sealed under the limiting action of the limiting piece;

3. and after the sampling box is taken out, the box cover is opened, the sampling box is vertically inverted, the sediment is poured out, or the box cover is opened to directly sample in the sampling box. The river course bed mud can be placed for a period of time when rare, perhaps directly open the lid and do not pour out the bed mud, how to study, just can with corresponding original state mud of getting is preserved.

The utility model discloses an advantage and beneficial effect do:

1. the device has simple structure and easy operation;

2. when the bottom window is upwards overturned and attached to the inner wall of the divergent section, the edge position protrudes out of the divergent section, and the bottom window can be automatically closed under the action of the gravity of bottom mud, so that the disturbance of the bottom mud in the sampling process is greatly reduced, and the original structure of the bottom mud of the river channel is reserved to the greatest extent;

3. the counterweight block is thick in the middle, and the counterweight mode that the two ends are thin is favorable for reducing the side resistance and the sampler sinks in the bottom sediment.

Drawings

Fig. 1 is a schematic structural diagram of a undisturbed sampler for bottom mud in a river channel in embodiment 1.

Fig. 2 is a perspective view showing the structure of a undisturbed sampler for bottom sediment in the river course according to embodiment 1.

Fig. 3 is a partial view of a bottom window in example 1.

Fig. 4 is a schematic view of the bottom window in inverted fit against the inner wall of the diverging section.

Fig. 5 is a partial view of a bottom window in example 2.

Fig. 6 is a schematic structural diagram of a undisturbed sampler for bottom mud in a river channel in embodiment 3.

Wherein:

1. a sampling box; 2. a pulling member; 3. a box cover; 4. a water outlet hole; 5. a gradual expansion section; 6. a bottom window; 6-1, a first bottom louver; 6-2, a second bottom window sheet; 7. a limiting member; 8. a baffle plate; 9. a balancing weight; 10. a ring-shaped handle; 11. hemp ropes; 12. a force-bearing portion.

For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.

Detailed Description

In order to make the technical field person understand the solution of the present invention better, the technical solution of the present invention is further described below with reference to the specific embodiments.

In the following embodiment, the sampler is in a vertical state, the box cover is taken as the upper part, and the window is taken as the lower part.

Example one

As shown in fig. 1, 2, 3, and 4:

the utility model provides a river sediment undisturbed sampler, includes sample box 1 and is fixed in the piece 2 is carried to the lift of 1 upper ends of sample box.

The cross section of the sampling box 1 is square, and a through cavity for containing bottom mud is formed in the sampling box 1. Be provided with lid 3 on the open-top of

sampling box

1, 3 interference connections of lid are on the open-top of sampling box 1. In the sampling process, due to the existence of the box cover 3, the sediment does not sink after being filled in the cavity, and the sampling is finished.

The lifting piece 2 comprises 2 ring-shaped handles 10 respectively fixed on two opposite sides of the upper part of the sampling box 1 and hemp ropes 11 with the end parts tying the two ring-shaped handles 10 together. The lifting piece is used for drawing the sampler and controlling the downward placement and the upward lifting of the sampler.

The lateral wall of the upper end of the sampling box 1 is provided with a water outlet hole 4, the water outlet hole 4 only allows water to flow out, and bottom mud cannot flow out. When the bottom mud enters the cavity, water flows out from the water outlet hole 4, so that the bottom mud smoothly enters the cavity.

The lower part of the sampling box 1 forms a divergent section 5 which gradually expands from top to bottom, and the cross section of the divergent section 5 is square. The bottom opening of the gradually-expanding section 5 is provided with a bottom window 6 which is opened in opposite directions, the bottom window 6 is composed of a first bottom window sheet 6-1 and a second bottom window sheet 6-2, the first bottom window sheet 6-1 and the second bottom window sheet 6-2 are respectively hinged to two opposite bottom edges of the gradually-expanding section 5, and the edges of the first bottom window sheet 6-1 and the second bottom window sheet 6-2 are S-shaped curves. When the bottom window 6 is turned upwards and attached to the inner wall of the divergent section 5, part of the edge of the bottom window 6 protrudes out of the divergent section 5 to form a stress part 12. When the edge of the sampling box is in an S-shaped curve, a tip part at the edge forms a stress part, and when the sampling box 1 is lifted upwards, the bottom window is pressed by the bottom mud under the action of the gravity of the bottom mud due to the existence of the stress part 12, so that the bottom window is closed.

And the other two opposite edges of the bottom of the divergent section 5 are respectively provided with a baffle plate 8, and the bottom window 6 is downwards turned to the baffle plates 8 to seal the bottom opening.

Preferably, a balancing weight 9 is welded outside the side wall of the sampling box 1, and the balancing weight 9 is thick in the middle and thin at two ends. The balancing weight 9 quantity is 2, and 2 balancing weights 9 are located two opposite sides of sampling box 1 respectively.

The undisturbed sampling method for the bottom mud of the river channel comprises the following steps:

1. the sampling box 1 covered with the box cover 3 sinks by means of self gravity, the bottom window 6 is upwards overturned and attached to the inner wall of the gradually expanding section 5 under the action of bottom mud or water, the bottom opening is opened, the bottom mud enters the cavity through the bottom opening, the water in the cavity flows out through the water outlet hole 4, and the cavity is gradually filled with the bottom mud;

2. when the sampling box 1 does not sink under the self gravity, the sampling box 1 is lifted upwards through the lifting piece 2, the bottom mud in the cavity presses the stress part 12, the bottom window 6 turns downwards, and the bottom opening is sealed under the limiting action of the limiting piece 7;

3. after the sampling box 1 is lifted, the box cover 3 is opened, the sampling box 1 is covered on the top of the sampling box 1 by a hard plate, the sampling box is quickly vertically inverted, the sampling box 1 is slowly and vertically lifted, and bottom mud is poured out.

Example two

This example is modified from example 1.

As shown in fig. 1, 2, 4, and 5:

as shown in figures 1 and 3, the edge of the first bottom window sheet 6-1 and the edge of the second bottom window sheet 6-2 are broken lines. When the first bottom window sheet 6-1 and the second bottom window sheet 6-2 are both in a horizontal state, namely rotate to the position of the limiting piece, the broken lines of the two window sheets contact to seal the bottom opening, and when the first bottom window sheet 6-1 and the second bottom window sheet 6-2 are attached to the inner wall of the divergent section 5, the tip of the edge of the broken line forms a stress part.

EXAMPLE III

In this embodiment, a counterweight is further described on the basis of embodiment 1.

As shown in fig. 1, 2, 4, and 6:

the utility model provides a river course bed mud original state sampler, for increasing the counter weight effect, counter weight piece quantity is 4, 4 two bisymmetry settings in on four sides of sampling box.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The invention has been described above by way of example, and it should be noted that any simple variants, modifications or other equivalent substitutions by a person skilled in the art without spending creative effort may fall within the scope of protection of the present invention without departing from the core of the present invention.

Claims

1. The utility model provides a river sediment undisturbed sampler, which is characterized in that, including sample box (1) with be fixed in carry and draw piece (2) of sample box (1) upper end, form a cavity that holds the sediment that runs through in sample box (1), be provided with lid (3) on the open-top of sample box (1), be formed with apopore (4) on the upper portion lateral wall of sample box (1), the lower part of sample box (1) forms one from the top down and enlarges gradually section (5), the bottom opening part of gradually enlarging section (5) is provided with end window (6) to opening, end window (6) upwards overturn the laminating when gradually enlarging section (5) inner wall, the partial edge salient of end window (6) is in gradually enlarging section (5) formation atress portion (12), the bottom edge of gradually enlarging section (5) still is provided with locating part (7), and when the bottom window (6) is turned downwards to the limiting part (7), the bottom opening is sealed.

2. A undisturbed sampler for river sediment according to claim 1 wherein the cross-section of the sampling box (1) and the divergent section (5) is square or rectangular.

3. A undisturbed sampler of river sediment according to claim 1 wherein the stop (7) is a baffle (8) fixedly attached to the bottom edge of the divergent section (5).

4. The undisturbed sampler of river sediment according to claim 1, wherein the bottom window (6) is composed of a first bottom window sheet (6-1) and a second bottom window sheet (6-2), the first bottom window sheet (6-1) and the second bottom window sheet (6-2) are hinged to two opposite bottom edges of the divergent section (5), and the edges of the first bottom window sheet (6-1) and the second bottom window sheet (6-2) are S-shaped curves or broken lines.

5. The undisturbed sampler for bottom mud in river course according to claim 1, characterized in that a clump weight (9) is fixed outside the side wall of the sampling box (1).

6. The undisturbed sampler for bottom mud in river course according to claim 5 wherein said weight block (9) is thick in the middle and thin at both ends.

7. A undisturbed sampler of river sediment according to claim 5 wherein the clump weight (9) is glued or welded to the outside of the side wall of the sampling box (1).

8. The undisturbed sampler for bottom mud in river course according to claim 5, wherein the number of said weight blocks (9) is 2 or 4, when the number of weight blocks (9) is 2, 2 weight blocks (9) are symmetrically arranged on two opposite sides of said sampling box (1), when the number of weight blocks (9) is 4, 4 weight blocks (9) are symmetrically arranged on four sides of said sampling box (1) two by two.

9. A undisturbed sampler for river sediment according to claim 1 wherein the lid (3) is interference fitted over the top opening of the sampling box (1).

10. The undisturbed sampler of river sediment according to claim 1 wherein the lifting member (2) includes 2 ring handles (10) fixed to opposite sides of the upper part of the sampling box (1) and a hemp rope (11) with ends tying the two ring handles (10) together.