CN209841618U

CN209841618U - Go into river mouth suspended solid grading metering device

Info

Publication number: CN209841618U
Application number: CN201920459543.8U
Authority: CN
Inventors: 孔明; 张爱国; 张卫东; 张毅敏; 管祥洋
Original assignee: Nanjing Institute of Environmental Sciences MEE
Current assignee: Nanjing Institute of Environmental Sciences MEE
Priority date: 2019-04-08
Filing date: 2019-04-08
Publication date: 2019-12-24
Anticipated expiration: 2029-04-08

Abstract

The utility model discloses a go into river mouth suspended solid grading metering device belongs to water environment research field. In the device, the water inlet and the water outlet are gradually contracted from large to small along the water flow direction, so that the water flow can be effectively prevented from flowing reversely. The filter screens in a plurality of different apertures are arranged in the device body at equal intervals and used for separating suspended matters with different particle sizes, and the suspended matters with different particle sizes are collected through a plurality of drawer type boxes at the bottom of the device body respectively. Still be equipped with the buffering pendulum at water inlet department, this buffering pendulum is driven by the motor and changes, can stop the influence that different estuary rivers dynamic difference brought to a certain extent, strengthens metering device's suitability. In addition, still be equipped with a plurality of agitators in the device body, make metering device during operation, the suspended solid can not subside rapidly, has guaranteed the abundant hierarchical of suspended solid. The utility model discloses the principle is simple, and convenient to use has important environmental protection meaning.

Description

Go into river mouth suspended solid grading metering device

Technical Field

The utility model relates to a water environment research field, concretely relates to go into estuary suspended solid graded metering device.

Background

The water source in rivers and lakes in China is formed by converging various branches, and at the converging river inlet, heavy metals or micro plastics in bottom mud are driven to enter the rivers and lakes along with the water flow due to the resuspension of sediments formed by the impact force of the water flow, so that the pollution of large rivers and lakes is aggravated.

Because of the large number of branches, the suspended substances in each branch have different substances or types and particle sizes. In view of this, the suspended matter at the estuary is generally classified to some extent by statistically collecting counts.

The prior suspended matter grading device has few patents, is mainly used for small sampling, and has no device for metering at an estuary. Chinese patent CN202928846U, year 05 and 08 of 2013, discloses a hierarchical collection device for suspended matters in natural water, which, although belonging to a hierarchical device, mainly aims at counting, and the water intake is achieved by suction filtration of a suction pump, and the detail of "natural water intake" is changed to a certain extent, and the suspended matters are more or less influenced.

Chinese patent CN105158023A, 2015 year 12, 16, discloses a hierarchical filtration water suspended solid collection device of automatic control formula, and the device has also adopted the suction pump equally, and mechanized monitoring can be more convenient to a certain extent really, but the material that contains in the suspended solid can produce the settlement, and can produce phenomenons such as absorption fragmentation in the suction filtration process, has violated the theory of natural monitoring equally.

Disclosure of Invention

The utility model provides an adopt the nature mode of intaking to can carry out the metering device of collecting in grades to different estuary suspended solids.

The utility model discloses a technical scheme who solves technical problem and adopt does:

a classification and metering device for suspended matters at an estuary comprises: the water inlet, the device body and the water outlet are connected in sequence, and the water inlet and the water outlet are of structures which gradually shrink from large to small along the water flow direction;

a plurality of filter screens are arranged in the device body, and the pore diameters of the filter screens are sequentially reduced along the water flow direction; the device body is divided into a plurality of grading sections by the plurality of filter screens, and a drawer type box for collecting suspended matters is arranged below each grading section.

Preferably, the several stages are of equal length.

Preferably, a stirrer support is arranged behind each filter screen in the device body, and the filter screens are tightly attached to the corresponding stirrer supports;

the center of the stirrer support is provided with an annular plate, a plurality of spokes integrally extend out of the outer edge of the annular plate along the circumferential direction, the spokes are connected with the device body, and water flows through gaps between adjacent spokes;

each grading section is internally provided with an electric stirrer, and each electric stirrer is fixed on the annular plate corresponding to the stirrer support through a bolt; and each electric stirrer is powered by an external power supply.

Preferably, the water inlet is a hemispherical cover, and a water through hole is formed in the center of the hemispherical cover; the limbers department is equipped with the buffering pendulum, the buffering pendulum includes: the device comprises a swing rod, a ball, a motor and a microprocessor; the motor and the microprocessor are respectively and fixedly arranged on the outer side surface of the hemispherical cover;

the swing rod is a strip-shaped plate which is horizontally arranged and is positioned on the inner side of the hemispherical cover and right below the limber hole; a through hole is formed in the middle of the swing rod along the width direction of the swing rod, a rotating shaft of the motor penetrates through the hemispherical cover and is embedded into the through hole, and the rotating shaft of the motor is tightly matched with the swing rod;

a left baffle and a right baffle are respectively arranged at the left end and the right end of the swing rod, the left baffle and the right baffle are respectively and fixedly connected to the hemispherical cover, and the free ends of the left baffle and the right baffle are connected through a rear baffle; the three baffles are in an encircling shape and act together with the hemispherical cover to prevent the balls from rolling off the swing rod;

the ball rolls on the upper end face of the swing rod, and the diameter of the ball is larger than that of the water through hole;

the motor and the microprocessor are powered by the external power supply, the microprocessor controls the rotating shaft of the motor to rotate in a reciprocating mode within 30 degrees, and the motor drives the swing rod to rotate.

Preferably, a first groove and a second groove are respectively formed in two ends of the upper end face of the swing rod, and the ball rolls between the first groove and the second groove.

Preferably, the first groove and the second groove are both arc-shaped grooves, the radius of the arc-shaped grooves is equal to the radius of the balls, and the depth of the arc-shaped grooves is equal to 1/2 of the radius of the balls.

Preferably, a first lower baffle and a second lower baffle for limiting the rotation angle of the swing rod are respectively arranged at set heights under the left end and the right end of the swing rod;

the first lower baffle and the second lower baffle are respectively and fixedly connected to the hemispherical cover.

Preferably, the diameter of the ball is 1.5 times the diameter of the water passage hole.

The beneficial effects of the utility model reside in that:

the utility model discloses a metering device is collected in grades to estuary suspended solid principle is simple, convenient to use, and it is through the natural mode of intaking to carry out the collection in grades according to the particle size of suspended solid, the collection result is more accurate. In addition, researchers can further analyze the influence degree of suspended matters caused by the fact that all the branches enter the main rivers and lakes according to the collection result, and therefore the method has important significance for environmental protection.

Drawings

FIG. 1 is a front view of the present invention in cross section;

FIG. 2 is a schematic structural view of the buffering pendulum of the present invention;

FIG. 3 is a schematic structural view of the agitator bracket of the present invention;

reference numerals: 1-device body, 2-electric stirrer, 3-stirrer support, 4-filter screen, 5-drawer type box, 6-buffer pendulum, 61-pendulum rod, 611-first groove, 612-second groove, 62-ball, 7-motor, 8-microprocessor, 9-lead and 10-external power supply.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A device for the staged metering of suspended matter as shown in figure 1 comprising: a water inlet, a device body 1 and a water outlet which are connected in turn from right to left. The water inlet and the water outlet are both gradually contracted from big to small along the water flow direction, so that the water flow can be effectively prevented from flowing reversely. Specifically, device body 1 is the square pipe that both ends link up, and the water inlet is the hemisphere cover that the center opened has the limbers, and the delivery port is the bellmouth with device body 1 body coupling, and the bellmouth is formed by 4 trapezoidal plate amalgamations. The junction of square pipe and hemisphere cover is opened has the nock that matches with the sphere, and square pipe is connected along circumference with hemisphere cover.

3 filter screens 4 are arranged in the square pipe at equal intervals, the size of each filter screen 4 is the same as the cross section of the square pipe, and the filter screens 4 are vertically fixed on the inner wall surface of the square pipe. The aperture of 3 filter screens 4 reduces along the rivers direction in proper order, and the filter screen 4 in minimum aperture is located square tub left end tip. The square pipe is internally divided into 3 grading sections with equal length by 3 filter screens 4, and a drawer type box 5 for collecting suspended matters is arranged below each grading section. 3 drawer type case 5 all sits in square socle portion, and square socle side is opened with the position that 3 drawer type case 5 correspond has the slot hole, and drawer type case 5 can be followed square socle and taken out. The upper part of the drawer type box 5 is opened, and suspended matters blocked by the filter screen 4 enter the drawer type box 5 from the upper part. The natural power of water flow makes the suspended matters pass through each grading section in turn along with the water flow, and the suspended matters with corresponding grain sizes are left in the grading sections provided with the corresponding aperture filter screens 4. After suspended matters are collected in the drawer type box 5 below each grading section, the suspended matter particles with corresponding particle sizes can be measured through drying.

When the metering device works, in order to prevent suspended matters from rapidly settling, the sufficient classification of the suspended matters is ensured. The above-described metering device can be optimized by providing an electric stirrer 2 in each stage. Specifically, all be equipped with agitator support 3 behind each filter screen 4 in the square pipe, agitator support 3 is hugged closely corresponding filter screen 4 and is set up.

The structure of the stirrer support 3 is shown in fig. 3, the center of which is a circular plate, and 4 through holes are uniformly formed on the circular plate. The outer edge of the annular plate integrally extends out of 4 spokes along the circumferential direction, and every two adjacent spokes form an angle of 90 degrees. The 4 spokes are connected with the inner wall surface of the square pipe, and water flows through gaps between the adjacent spokes. Each electric stirrer 2 is fixed on the annular plate corresponding to the stirrer support 3 through a bolt, and each electric stirrer 2 is connected with an external power supply 10 through a lead 9. The electric stirrer 2 is matched with water flow power, so that suspended matters are not rapidly settled during the working period of the metering device. In order to prevent the stirrer from rotating and destroying suspended substances or particles, an agitating device without large blades is selected, and in the embodiment, an electric agitator of the Ommon OMJJ-1 type is selected.

As a further optimization of the above solution, as shown in fig. 1 and 2, a buffering pendulum 6 is further provided at the water through hole of the hemispherical cover, and the buffering pendulum 6 includes: a swing rod 61, a ball 62, a motor 7 and a microprocessor 8. Wherein, the motor 7 and the microprocessor 8 are respectively fixedly arranged on the outer side wall surface of the hemispherical cover. The motor 7 is a waterproof motor, and the microprocessor 8 adopts a waterproof measure, specifically wraps the motor through a waterproof film, and other measures which can effectively prevent water are available. The motor 7 and the microprocessor 8 are respectively connected with an external power supply 10 through wires 9.

The swing rod 61 is a horizontally arranged strip-shaped plate and is positioned on the inner side of the hemispherical cover and right below the water through hole. A through hole is formed in the middle of the swing rod 61 along the width direction of the swing rod, a rotating shaft of the motor 7 penetrates through the hemispherical cover and is embedded into the through hole, and the rotating shaft of the motor 7 is tightly matched with the swing rod 61. The two ends of the upper end surface of the swing rod 61 are respectively provided with a first groove 611 and a second groove 612, the first groove 611 and the second groove 612 are both arc-shaped grooves, the radius of the arc-shaped grooves is equal to that of the ball 62, and the depth of the arc-shaped grooves is 1/2 of the radius of the ball 62. The ball 62 rolls between the first groove 611 and the second groove 612 on the upper end surface of the swing rod 61, the diameter of the ball 62 is larger than that of the water through hole, and the ball 62 is prevented from sliding out of the water through hole and being blocked at the water through hole to influence water inlet. Specifically, the diameter of the ball 62 is 1.5 times the diameter of the water passage hole.

The left end and the right end of the swing rod 61 are respectively provided with a left baffle and a right baffle, the left baffle and the right baffle are respectively and fixedly connected to the hemispherical cover, and the free ends of the left baffle and the right baffle are connected through a rear baffle. A gap is reserved between the left baffle and the left end of the swing rod 61, and a gap is reserved between the right baffle and the right end of the swing rod 61. The three baffles are in an encircling shape and act together with the hemispherical cover to prevent the balls 62 from rolling off from the swing rod 61.

The microprocessor 8 controls the motor 7 to make reciprocating rotation within 30 degrees, the motor 7 drives the swing rod 61 to rotate, and in the embodiment, the rotating angle of the rotating shaft of the motor 7 is controlled to be minus 30 degrees to plus 30 degrees. And a first lower baffle and a second lower baffle which limit the rotation angle of the swing rod 61 are respectively arranged right below the left end and the right end of the swing rod 61, and the first lower baffle and the second lower baffle are respectively and fixedly connected to the hemispherical cover. The heights of the first lower baffle and the second lower baffle from the rotating shaft of the motor 7 are 1/4 degrees of the length of the swing rod 61, namely, when the left end of the swing rod 61 touches the first lower baffle or the right end of the swing rod 61 touches the second lower baffle, the rotating angle of the swing rod 61 is just 30 degrees.

It should be noted that, the microprocessor 8 controls the rotating shaft of the motor 7 to reciprocate at a set angle, which is the prior art, and can be implemented by recording a command program in the microprocessor 8.

The utility model discloses a theory of operation lies in:

the suspended matter enters the device body 1 along with the water flow through the water flow holes. Because in the initial state, the device 1 does not contain water, the water flow firstly falls on the swing rod 61, and when the water flow impacts the swing rod 61, the kinetic energy of the water flow is buffered. After the device 1 is filled with water, the motor 7 drives the swing rod 61 to rotate in a reciprocating mode, the swing rod 61 can disturb the entering water flow, the influence caused by the difference of the water flow force of different river inlets can be avoided to a certain extent, the applicability of the device is enhanced, and the metering precision is improved. The ball 62 rolls between the first groove 611 and the second groove 612, and can clean suspended particles retained on the swing rod 61.

Then, the water flow enters each stage in sequence, and the electric stirrer 2 in each stage disturbs the entering water flow to prevent suspended matters from settling. Suspended matters with corresponding grain diameters are left in the grading sections provided with the corresponding aperture filter screens 4, and the suspended matters are collected by the drawer type box 5 below each grading section. After the specified counting time is finished, the drawer type box 5 is taken out to obtain suspended particles with corresponding particle sizes, and the suspended particles with corresponding particle sizes can be measured by drying the drawer type box 5. Then, subsequent research steps are carried out, and if micro-plastics with certain particle size are required, the micro-plastics can be extracted in the corresponding grading section.

The utility model discloses a device is when specifically using, and device body 1 is through a rope bolt, and the other end of rope is connected and to be floated on the object of the surface of water, like foam or air supporting pad. The balancing weight is also mounted under the bottom of the device body 1 through another rope, such as an iron block, a brick and the like. When the method is used for the concrete operation, the balancing weight is firstly placed into water, the rope for mounting the balancing weight is pulled to enable the balancing weight to slowly sink into the water, then the metering device is placed into the water, and the metering device is slowly sunk into the water through the same method. The buoyancy of the object floating on the water surface is far greater than the sum of the gravity of the metering device and the counterweight, so that the metering device can always keep the horizontal state to work in the water, and the suspension depth can be controlled by a rope connected with the floater on the water surface. In this embodiment, the external power source 10 is disposed on the river bank to supply power to the 3 stirrer supports 3, the motor 7 and the microprocessor 8, and the distance from the river bank to the metering device is limited by the length of the lead 9. Of course, it is conceivable that the external power source 10 may be set on the water surface via a floating animal (e.g., a boat), so that the sample collection may be performed at a position farther from the bank, which is not described herein again.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A classification and metering device for suspended matters at an estuary comprises: the water inlet, the device body (1) and the water outlet are sequentially connected, and the water inlet and the water outlet are gradually contracted from large to small along the water flow direction;

a plurality of filter screens (4) are arranged in the device body (1), and the apertures of the filter screens (4) are sequentially reduced along the water flow direction; the device body (1) is divided into a plurality of grading sections by the plurality of filter screens (4), and a drawer type box (5) for collecting suspended matters is arranged below each grading section.

2. The apparatus of claim 1, wherein the plurality of stages are equally long.

3. The device for graded metering of river mouth suspended matter according to claim 1 or 2, characterized in that a stirrer bracket (3) is arranged behind each filter screen (4) in the device body (1), and the filter screens (4) are tightly attached to the corresponding stirrer brackets (3);

the center of the stirrer support (3) is provided with an annular plate, a plurality of spokes integrally extend out of the outer edge of the annular plate along the circumferential direction, the spokes are connected with the device body (1), and water flow passes through gaps between adjacent spokes;

each grading section is internally provided with an electric stirrer (2), and each electric stirrer (2) is fixed on the annular plate corresponding to the stirrer support (3) through a bolt; each electric stirrer (2) is powered by an external power supply (10).

4. The staged measuring device for river mouth suspended matter according to claim 3, wherein said water inlet is a hemispherical cover, and a water through hole is formed in the center of said hemispherical cover; limbers department is equipped with buffering pendulum (6), and buffering pendulum (6) include: the device comprises a swing rod (61), a ball (62), a motor (7) and a microprocessor (8); the motor (7) and the microprocessor (8) are respectively and fixedly arranged on the outer side surface of the hemispherical cover;

the swing rod (61) is a horizontally arranged strip-shaped plate and is positioned on the inner side of the hemispherical cover and right below the limber hole; a through hole is formed in the middle of the swing rod (61) along the width direction of the swing rod, a rotating shaft of the motor (7) penetrates through the hemispherical cover and is embedded into the through hole, and the rotating shaft of the motor (7) is tightly matched with the swing rod (61);

a left baffle and a right baffle are respectively arranged at the left end and the right end of the swing rod (61), the left baffle and the right baffle are respectively and fixedly connected to the hemispherical cover, and the free ends of the left baffle and the right baffle are connected through a rear baffle; the three baffles are in an encircling shape and act together with the hemispherical cover to prevent the balls (62) from rolling off from the swing rod (61);

the ball (62) rolls on the upper end face of the swing rod (61), and the diameter of the ball (62) is larger than that of the water through hole;

the motor (7) and the microprocessor (8) are powered by an external power supply (10), the microprocessor (8) controls the rotating shaft of the motor (7) to rotate in a reciprocating manner within 30 degrees, and the motor (7) drives the swing rod (61).

5. The device for graded metering of suspended matters at the river mouth according to the claim 4, characterized in that the two ends of the upper end surface of the swing rod (61) are respectively provided with a first groove (611) and a second groove (612), and the ball (62) rolls between the first groove (611) and the second groove (612).

6. The apparatus for the staged metering of an inlet suspension according to claim 5, wherein the first recess (611) and the second recess (612) are both arc-shaped recesses having a radius equal to the radius of the ball (62) and a depth equal to 1/2 of the radius of the ball (62).

7. The river mouth suspended matter grading and metering device as claimed in any one of claims 4 to 6, wherein a first lower baffle and a second lower baffle limiting the rotation angle of the swing rod (61) are further respectively arranged at set heights right below the left end and the right end of the swing rod (61);

8. The apparatus for the staged suspended matter metering at the estuary of claim 7, wherein the diameter of the balls (62) is 1.5 times the diameter of the water passage holes.