CN113653147A

CN113653147A - Row's mouth monitoring devices with anti silt function

Info

Publication number: CN113653147A
Application number: CN202110932494.7A
Authority: CN
Inventors: 郭效法; 刘新民; 苏伟; 成奇; 孙德刚; 何飚
Original assignee: China Construction Eighth Engineering Divion Southern Construction Co Ltd
Current assignee: China Construction Eighth Engineering Divion Southern Construction Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2021-11-16

Abstract

The invention provides a discharge port monitoring device with an anti-silting function, which comprises a parallelogram movable frame and an anti-silting mechanism, wherein the movable frame comprises a top support, an underwater workbench and two movable cantilevers, the top support is horizontally and fixedly arranged at the top of a monitoring section of a discharge port, two ends of the top support are respectively hinged with one movable cantilever, two ends of the underwater workbench are respectively hinged with the bottom ends of the two movable cantilevers, and the top support and the underwater workbench are arranged in parallel; install the bottom of workstation under water anti silt mechanism, anti silt mechanism includes adjustable bottom plate, tensioning reed and flexible subassembly, workstation and adjustable bottom plate under water are connected at the both ends of tensioning reed, make workstation, adjustable bottom plate and flexible subassembly form the triangular supports that the angle can open and shut under water. The device can automatically keep the dynamic level of an underwater installation working surface, can effectively resist the silting interference of the sludge at the discharge port to the instrument, and supports the water outlet maintenance of equipment and pipelines.

Description

Row's mouth monitoring devices with anti silt function

Technical Field

The invention relates to the technical field of water environment protection engineering, in particular to a discharge port monitoring device with an anti-silting function.

Background

The drainage monitoring is a necessary measure for clarifying pollution causes, carrying out grading traceability, carrying out hazard evaluation and further implementing technical treatment in the water environment protection process. The discharge port monitoring device is a special device for setting the section of a discharge port monitoring project, installing instruments and assisting in pipeline arrangement. At present, the traditional discharge device is as follows: the Parshall tank and the underwater section base have application limitation based on the reasons of functional structure:

1) the installation and construction conditions are harsh: the traditional device needs to cut off the flow of the water discharge opening first, and can be installed behind the water drainage side. Old drainage ports which can not cut off water and drain water cannot be arranged;

2) poor anti-accretion capability: because the traditional device is fixed at the bottom of the discharge port monitoring section, settled sludge is easy to bury instruments and block pipelines, so that the traditional device is difficult to adapt to discharge ports with high content of silt and impurities and slow or unstable water flow speed;

3) difficulty in maintenance and adjustment: the traditional device is fixed underwater on a monitoring section in a pre-embedded mode. As the working surface of the equipment for mounting the sensing instrument can not discharge water, the assembly, disassembly, maintenance and horizontal adjustment of the sensing instrument are all quite difficult. When the maintenance and adjustment are carried out, if the water cannot be cut off and drained, only the diving operation can be carried out.

Disclosure of Invention

In order to solve the technical problem, the invention provides a discharge port monitoring device with an anti-silting function. The device is an anti-silting type discharge port monitoring device which is strong in adaptability, easy to arrange, capable of resisting silting interference and simple and convenient to overhaul and adjust, and ensures the dynamic level of the working surface of underwater equipment by utilizing the principle that opposite sides are automatically kept parallel in the angle change process of a parallelogram; and the device can be adaptive to water flow impact and sediment sedimentation under various working conditions, thereby avoiding silting interference of the sludge at the discharge port on a sensing instrument and a pipeline and supporting water outlet maintenance of equipment and the pipeline.

In order to realize the purpose of the invention, the invention adopts the technical scheme that:

a row of mouth monitoring devices with anti-silting function, including parallelogram movable frame and anti-silting organization, the said movable frame includes top support, underwater work platform and two movable cantilevers, the said top support is fixed to the monitoring section top of arranging the mouth horizontally, the both ends of the said top support articularly connect one said movable cantilever separately, the both ends of the said underwater work platform articularly connect the bottom of two said movable cantilevers separately, and the said top support is parallel to underwater work platform; install the bottom of workstation under water anti silt mechanism, anti silt mechanism includes adjustable bottom plate, tensioning reed and flexible subassembly, the one end of adjustable bottom plate with the workstation is articulated under water, and the other end of adjustable bottom plate passes through flexible subassembly to be connected the other end of workstation under water, workstation and adjustable bottom plate under water are connected at the both ends of tensioning reed, make workstation, adjustable bottom plate and flexible subassembly form the triangular supports that the angle can open and shut under water.

The telescopic assembly comprises an adjusting screw rod and a sliding joint sleeve, wherein the sliding joint sleeve is movably arranged on the underwater workbench and can rotate in the longitudinal direction of the underwater workbench; one end of the adjusting screw rod is movably connected with the adjustable bottom plate, the other end of the adjusting screw rod penetrates out of the sliding joint sleeve and is positioned above the underwater workbench, and a limiting nut is arranged at the penetrating end.

Preferably, a longitudinal sliding groove is formed in the adjustable bottom plate, and the end of the adjusting screw rod is clamped in the longitudinal sliding groove and can move along the longitudinal sliding groove.

The adjustable bottom plate is of a bent structure, and the width of the upstream surface at the front end is larger than that of the downstream surface at the rear end.

Preferably, the upstream surface of the front end of the adjustable bottom plate forms an angle of 45 degrees with the horizontal plane.

The top support comprises an upper support arm and an L-shaped mounting plate, wherein the L-shaped mounting plate is fixedly mounted at the top of the monitoring section of the row opening, the upper support arm is horizontally mounted on the L-shaped mounting plate, and the two movable cantilevers are connected with the upper support arm through movable pins.

The top bracket is provided with a channel for a water supply pipeline to pass through.

The movable cantilever is of a hollow structure, and a plurality of threading holes are axially arranged at the lower end of the movable cantilever.

The upper end of the movable cantilever is axially provided with a plurality of pin holes.

The front instrument mounting surface for horizontally placing instruments is arranged on the upstream surface at the front end of the underwater workbench, and a frame type instrument protection cabin is arranged on the back surface at the rear end of the underwater workbench.

The invention has the beneficial effects that:

1. the device is convenient to install and construct, and can be installed by draining without cutting off the drainage port. The anti-silting capacity is good, the silting interference of the sludge at the discharge port to a sensing instrument and a pipeline can be avoided, and the device is suitable for various water quality environments including silt and impurity contents, slow water flow speed or unstable discharge ports. The adjustment is overhauld conveniently, and the device structure can self-adaptation rivers impact and silt subsides to can ensure the dynamic level of instrument installation face under water, and support equipment, pipeline water outlet and overhaul.

2. The device adopts a structure of a parallelogram movable frame, and utilizes the principle that opposite sides are kept absolutely parallel in the deformation process of the parallelogram, so that the underwater workbench can realize self-leveling based on the structure in the motion state of water flow impact, and the dynamic level of the underwater workbench is automatically maintained. The top support is kept in a horizontal state during installation, so that the underwater workbench can be ensured to be also in a horizontal state, and later-stage underwater adjustment is not needed.

3. The device is characterized in that an anti-silt mechanism is arranged at the bottom of the underwater workbench, so that the underwater workbench, the adjustable bottom plate and the telescopic component form a triangular support which can be opened and closed at an angle, the adjustable bottom plate is pre-tensioned outwards by the spring force of the tensioning reed, the contact area between the adjustable bottom plate and a silt layer can be changed based on the pressure of the structure on the silt at the bottom, and the device can self-adapt to the requirement of lifting the whole structure when the parallelogram movable frame is positioned at different angles.

4. The adjustable bottom plate is arranged into a bending structure, the mounting surface close to the front instrument is a front end upstream surface, the instrument protection cabin close to the rear frame type instrument protection cabin is a rear end back surface, the width of the upstream surface is larger than that of the back surface, the stress area of the upstream surface is increased, and the device is easier to push out by water flow and cannot be trapped in silt.

5. The device is provided with a front instrument mounting surface for horizontally placing an instrument on an underwater working table, a Doppler flow monitoring device can be arranged in a mounting mode, a frame type instrument protection cabin is arranged at the rear portion of the device, and an immersion water quality sensor can be arranged in the instrument protection cabin. Various types of underwater equipment such as flow, water quality sensors, analyzer water intake pipelines and the like can be integrally installed and arranged.

Drawings

FIG. 1 is a schematic view of a vent monitoring device according to the present invention;

FIG. 2 is a schematic view of another angle of the discharge port monitoring device of the present invention;

FIG. 3 is an exploded view of an anti-sludge mechanism of the drain monitor apparatus according to embodiment 2;

FIG. 4 is a schematic diagram of the anti-silting operation of the drain monitoring device of the present invention by manual adjustment;

FIG. 5 is a schematic diagram of the operation of the drain port monitoring device of the present invention for automatically adjusting the erosion resistance by water flow impact;

FIG. 6 is a simplified diagram of the reset state force analysis of the vent monitoring device of the present invention;

FIG. 7 is a schematic view of the installation of the discharge monitoring device of the present invention at a pipe type discharge port;

FIG. 8 is a schematic view of the installation of the discharge monitoring device of the present invention on a channel type discharge;

FIG. 9 is a schematic view of the apparatus and pipeline mounting of the discharge port monitoring device of the present invention;

FIG. 10 is a schematic view of the underwater work table and the instrument and equipment water outlet maintenance of the drain monitoring device of the present invention.

Reference numerals: 100-top support, 101-L-shaped mounting plate, 103-movable pin, 104-mounting hole, 105-upper support arm, 200-movable cantilever, 212-pin hole, 213-threading hole, 300-underwater workbench, 301-lower support arm, 307-limit nut, 308-adjusting screw, 309-sliding sleeve, 310-adjustable bottom plate, 311-front instrument mounting surface, 312-rear instrument mounting surface, 313-tensioning reed, 314-vertical arm, 315-instrument protection cabin and 318-longitudinal sliding groove.

Detailed Description

In order to more clearly and specifically illustrate the technical solution of the present invention, the present invention is further described by the following embodiments. The following examples are intended to illustrate the practice of the present invention and are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1 and 2, a discharge monitoring device with an anti-silting function comprises a parallelogram-shaped movable frame and an anti-silting mechanism, wherein the movable frame comprises a top support 100, an underwater workbench 300 and two movable cantilevers 200, the top support 100 is horizontally and fixedly installed at the top of a monitoring section of a discharge, two ends of the top support 100 are respectively hinged with one movable cantilever 200, two ends of the underwater workbench 300 are respectively hinged with the bottom ends of the two movable cantilevers 200, and the top support 100 and the underwater workbench 300 are arranged in parallel; the bottom of workstation 300 is installed under water anti silt mechanism, anti silt mechanism includes adjustable bottom plate 310, tensioning reed 313 and flexible subassembly, adjustable bottom plate 310 one end with workstation 300 is articulated under water, and adjustable bottom plate 310's the other end passes through flexible subassembly to be connected the other end of workstation 300 under water, workstation 300 and adjustable bottom plate 310 under water are connected at the both ends of tensioning reed 313, make workstation 300 under water, adjustable bottom plate 310 and flexible subassembly form the triangle-shaped support that the angle can open and shut.

The device of the invention has the working principle of self-leveling: the top support 100, the movable cantilever 200 and the underwater workbench 300 are all provided with bolting holes and are connected by movable pins to form a deformable parallelogram movable frame. The top support 100 is arranged on the upper side of the parallelogram movable frame, the movable cantilever 200 is arranged on two sides of the parallelogram movable frame, and the underwater workbench 300 is arranged on the bottom side of the parallelogram movable frame. The upper side of the whole structure is fixed when the whole structure works, the length of the two side edges can be synchronously adjusted, and the bottom edge dynamic suspension can swing along with external force.

When water flow impacts the underwater workbench 300, the parallelogram structure is stressed to deviate, the top support 100 is fixed in position, the two movable cantilevers 200 are constrained to rotate only by taking a hinge point with the top support 100 as an axis, and the underwater workbench 300 is constrained by the structure to be dynamically parallel to the top support 100 in motion. Based on the principle, after the top support 100 is horizontally installed, the underwater workbench 300 can automatically keep horizontal, and the horizontal angle can be kept unchanged in the process that the structure is dynamically deformed under the action of external force.

The working principle of the device of the invention for resisting silt is as follows: the underwater work platform 300, the adjustable bottom plate 310 and the telescopic assembly together form a silt-resistant structure. The front end of the underwater workbench 300 is connected with the front end shaft hole of the adjustable bottom plate 310 through a movable pin in the water-facing direction, and a telescopic assembly is arranged in the rear end of the underwater workbench 300 in the water-backing direction to form a movable triangular support structure with an angle capable of being opened and closed. The tension spring 313 on the adjustable base plate 310 is clamped on the lower plane of the underwater work table 300, and the movable triangular support structure is kept in an outward tension state. The relative positions of the front instrument mounting surface 311, the instrument protection cabin 315 and the sludge layer can be adjusted at low flow rate, so that the sludge is prevented from blocking and interfering instrument equipment; the underwater work stage 300 can be pushed out of the sludge layer by an impact external force of the water current to the adjustable base plate 310 at a high flow rate. After the water flow is gentle, the device falls under the action of gravity, the whole structure automatically resets, and the underwater workbench 300 is ensured to be always positioned above the silt layer.

The telescoping assembly, tension spring 313, collectively maintain the resilient telescoping connection of the underwater work platform 300 to the rear end of the adjustable base plate 310. The connection form is in an outward pre-tensioning state, and in the process of maintaining movement, the angle between the underwater workbench 300 and the adjustable bottom plate 310 can only be inwards reduced but not outwards increased, so that the contact area with a sludge layer is changed based on the pressure of the structure on bottom sludge, and the lifting requirement on the whole structure is met when the self-adaptive parallelogram movable frame is at different angles.

Generally, silt formed by settling silt and impurities in water covers the adjustable bottom plate 310 from low to high gradually, and further threatens a front instrument mounting surface 311 and a rear instrument mounting surface 312 on the underwater workbench. The invention discloses a manual regulation anti-silting working principle of a discharge port monitoring device, which comprises the following steps:

as shown in FIG. 4, in the resting state, the whole structure is suspended and fixed by the top support 100 at the position L1 on the upper edge of the parallelogram movable frame, and the adjustable bottom plate 310 is buried in the sludge layer and is in an unstressed state. The manual adjustment of the silt resistance can be performed in the case where the "silt layer at the bottom of the pipe/channel" rises continuously to threaten the front equipment installation surface 311 and the rear equipment installation surface 312. Manual adjustment of the anti-silting can be accomplished by "lifting → lowering" the underwater work platform 300 at the position of L2 below the parallelogram movable frame. The lifting action pulls the adjustable floor 310 on the underwater stage 300 out of the sludge layer, and the lowering action presses the adjustable floor 310 onto the sludge layer. The anti-silting adjustment process is manually performed, and the underwater work table 300 is reset under the constraint of the parallelogram movable frame structure. Before and after resetting, the underwater working platform 300 is in a horizontal state, and horizontal adjustment is not needed.

The drainage port monitoring device of the invention utilizes the water flow impact automatic adjustment anti-silting working principle:

as shown in FIG. 5, in the resting state, the whole structure is suspended and fixed by the top support 100 at the position L1 on the upper edge of the parallelogram moving frame, and the adjustable bottom plate 310 is buried in the sludge layer and is in an unstressed state. Under the condition of large flow rate of the discharge opening, the water flow speed is greatly increased, and the impact force on the front end vertical surface of the adjustable bottom plate 310 is increased. Based on the constraint of the parallelogram movable frame, the adjustable bottom plate 310 will drive the underwater working platform 300 to move backwards and upwards, and push the adjustable bottom plate 310 out of the sludge layer. After the reduction of the flow of the water discharge port and the recovery of the flow, the underwater work table 300 automatically resets based on gravity. The anti-silting adjustment process does not require manual intervention, and the underwater workbench 300 is reset under the constraint of the parallelogram movable frame structure. Before and after resetting, the underwater working platform 300 is in a horizontal state, and horizontal adjustment is not needed.

In the reset state, as shown in fig. 4 and 5, since the bottom of the adjustable bottom plate 310 is pressed on the sludge layer, the angle is reduced, and the tension spring 313 is in a compressed state, and lifts the parallelogram movable frame upwards. The underwater work stage 300 can be prevented from being sunk into the sludge.

Fig. 6 is a simplified diagram showing the force analysis of the reset state of the vent monitoring device according to the present invention. The process of self-balancing state after the structure of the device is reset is an adaptive process without manual intervention. Based on the structural characteristics, under the constraint of a parallelogram movable frame, the moment balance in the vertical direction and the horizontal direction is automatically achieved. In the figure, the solid line A-B represents the geometric central line of the parallelogram movable frame structure, the point A and the fixed point B can rotate by taking the point A as the center of a circle, and the system can be simply regarded as a simple pendulum system. Under the action of gravity G, point B will form a deflecting moment in the tangential direction. This moment can be derived from the following disclosure, where M1 is the yaw moment created by gravity, f1 is the component of gravity on the tangent to point B, L is the arm length between A-B, M is the total mass of the structure, g is the acceleration of gravity, and θ is the angle between the swing arm A-B and the vertical line of gravity. It has been found that the change in the M1 gravity yaw moment is dependent on the change in the angle theta.

M₁＝f₁×L＝(Gsinθ)×L＝(mg)sinθ×L

Under the supporting force F of the underwater work platform 300, the point B will form a deflecting moment with opposite tangential directions. This moment can be determined from the following disclosure. In the formula, M2 is the counter-yaw moment formed by the supporting force, and f3 is the component of the supporting force on the tangent line at the point B.

M₂＝f₃×L＝(Fsinθ)×L

Based on the system, the total weight m, the gravity acceleration g, the A-B arm length L and the like of the structure are constant and unchanged. The main variable causing the moments M1, M2 to vary is therefore the angle θ. The angle θ also affects the force between the associated system underwater work stage 300 and the bottom sludge layer. When the angle theta is very small, the reverse moment M2 is disclosed, the component F3 of the supporting force F of the underwater work table 300 on the tangent of the point B is approximately equal, and the adjustable bottom plate 310 in the underwater work table 300 is subjected to the sludge friction force F5. A formula may be formed in which P is a pressure of the entire structure against the sludge (equal to a reaction force of the supporting force), μ is a friction coefficient between the sludge and the adjustable base plate 310, and S is a projected area of the adjustable base plate 310 in a horizontal direction.

Angle theta is extremely small f₃≈f₅＝μxPxS＝μxFxS

Based on the above formula calculation, after simplifying and sorting the three groups of formulas, a simplified formula of the equilibrium state of the yawing moment M1 and the reverse yawing moment M2 can be obtained.

When the angle theta is extremely small M₁-M₂＝(mg)sinθ-μFS＝0

Based on the simplified equation, it can be seen that the gravity causes the torsional moment M1, which is mainly affected by the angle θ variable. The reverse torsional moment M2 is mainly influenced by the supporting force F provided by the underwater work platform 300 and the projected area S of the adjustable bottom plate 310 in the horizontal direction. Based on this principle, the device of the present invention can adjust the supporting force F by pre-adjusting the spring force of the tension spring 313 and restrain the projected area S of the adjustable base plate 310 in the horizontal direction. The whole structure tends to be stable until moment balance is realized based on the change of linear reinforcement of the spring force of the tension spring 313 in the compression process and the torsional moment M1 caused by gravity is resisted.

Fig. 7 and 8 are schematic views showing the installation of the anti-silting type discharge port monitoring device on a pipe type discharge port and a channel type discharge port. The anti-silting type drainage port monitoring device is installed on a head beam of a drainage port monitoring section through a top support 100, the fixed depth in the vertical direction is adjusted by a movable cantilever 200, and an underwater workbench 300 is movably contacted with the bottom of the monitoring section but is not fixed. All installation processes can be completed above the water surface, cutoff and drainage of the drainage port are not needed, the construction process is simple and convenient, and the drainage port structure can adapt to different types of drainage port structures.

Fig. 9 is a schematic view showing the instrument and equipment and pipeline mounting of the anti-silting drain monitoring device of the present invention. The front instrument mounting surface 311 on the underwater workbench 300 of the device is mainly used for arranging a flow sensor. The flow sensor adopts the 'Doppler principle', and the water flow speed and the depth of a monitoring section are measured through beam reflection, and then the flow is converted into the flow. Such sensors are capable of automatically correcting depth through algorithms, but are extremely sensitive to angle and must be installed horizontally. The device and the scheme dynamically keep the horizontal structural characteristic, ensure the absolute level of the front instrument mounting surface 311 and have very important significance on the measurement precision.

The rear instrument mounting surface 312 on the underwater platform 300 of the present apparatus shown in fig. 9 is mainly used for laying an immersion water quality sensor. The immersion water quality sensor mostly adopts a spectrum analysis method to monitor various water quality parameters such as dissolved oxygen, PH, turbidity, ORP, ammonia nitrogen, chlorophyll, blue-green algae, transparency, COD, heavy metal ions and the like in the water body. To avoid interference from surface scattered light sources, such sensors need to be mounted as vertically as possible. The device and the scheme dynamically keep the horizontal structural characteristic, and simultaneously ensure that the vertical arm 314 on the rear instrument mounting surface 312 and the instrument protection cabin 315 are in an absolute vertical state, thereby being beneficial to avoiding interference caused by a water surface scattered light source and improving the measurement precision.

The movable cantilever 200 of the device shown in fig. 9 is made of a rigid rectangular square tube, and the lower side surface of the movable cantilever is respectively provided with a plurality of water-permeable threading holes 213, so that the movable cantilever can be used for threading and protecting communication power supply circuits of sensing instruments and can also be used for threading and laying small-diameter flexible water intake pipelines. The hard water intake pipeline with large diameter can be fixed on the back surface of the movable cantilever 200 through simple devices such as a binding belt, a hoop and the like. The water intake pipe moves together with the movable cantilever 200 to be surely positioned above the sludge layer, thereby preventing clogging. The water intake pipeline is mainly used for online equipment which monitors water quality through a reagent method and cannot be arranged underwater, such as total phosphorus, total nitrogen and the like.

Fig. 9 shows that the array port monitoring device of the invention can simultaneously meet the installation and layout requirements of various monitoring instruments through a set of device, and has good equipment adaptability and economy.

FIG. 10 is a schematic view of the underwater working platform component and the instrument and equipment water outlet maintenance of the anti-silting type drain monitoring device. Based on the structural characteristics, the underwater working platform 300 is in movable contact with the bottom of the monitoring section, but is not fixed. The underwater workbench 300 can be pulled out of the water surface at any time to carry out conventional maintenance on the instrument and equipment, and after the maintenance is completed and reset, the underwater workbench 300 automatically keeps horizontal without manual adjustment. Is obviously superior to the traditional drainage device which needs to cut off and drain water and can only implement maintenance, such as the prior Parshall tank, underwater section base and the like.

Example 2

The invention is based on example 1:

as shown in fig. 3, the telescopic assembly comprises an adjusting screw 308 and a sliding sleeve 309, the sliding sleeve 309 is movably mounted on the underwater work platform 300, and the sliding sleeve 309 can rotate in the longitudinal direction of the underwater work platform 300; one end of the adjusting screw 308 is movably connected to the adjustable bottom plate 310, the other end of the adjusting screw 308 penetrates through the sliding joint sleeve 309 and is located above the underwater workbench 300, and a limit nut 307 is arranged at the penetrating end.

The rear end of the underwater workbench 300 is provided with a sliding joint sleeve 309 in the backwater direction, the sliding joint sleeve 309 is internally provided with no thread, and an adjusting screw 308 capable of sliding up and down is arranged in a penetrating manner. The lower end of the adjusting screw 308 is movably connected with an adjustable bottom plate 310, and the preset opening and closing angle among the lower support arm 301, the lower support arm 302 and the adjustable bottom plate 310 is adjusted through the position of a limiting nut 307 on the adjusting screw 308.

Adjusting screw 308 and tension spring 313 jointly keep underwater workbench 300 elastically and telescopically connected with the rear end of adjustable bottom plate 310. The connection is in an outwardly pre-tensioned state, and the angle between the underwater work platform 300 and the adjustable base plate 310 can only be inwardly reduced and cannot be outwardly increased during the maintenance movement.

When the adjustable bottom plate 310 is installed, the preset angle is adjusted through the adjusting screw 308. Under the impact force of water flow, the opening and closing angle of the adjustable bottom plate 310 is managed by adjusting the relative movement between the screw 308 and the sliding joint sleeve 309, the relative position between the underwater work table 300 and a sludge layer is maintained, and the underwater work table 300 is prevented from being embedded into sludge.

The sliding joint sleeve 309 can be movably mounted on the underwater workbench 300 through a movable pin, so that the sliding joint sleeve can rotate in the longitudinal direction of the underwater workbench 300, and meanwhile, the adjusting screw 308 and the adjustable bottom plate 310 are also movably connected, so that when the opening and closing angle of the adjustable bottom plate 310 is changed conveniently, the connection points of the adjusting screw 308 and the sliding joint sleeve 309 on the device can be adjusted in a self-adaptive manner in a moving state.

Example 3

The invention is based on the embodiment 2:

the adjustable bottom plate 310 is provided with a longitudinal sliding slot 318, and the end of the adjusting screw 308 is clamped in the longitudinal sliding slot 318 and can move along the longitudinal sliding slot 318.

Example 4

The invention is based on example 1:

the adjustable bottom plate 310 is of a bent structure, and the width of the front water-facing surface is larger than that of the rear water-backing surface. The stress area of the upstream surface is increased, so that the device is easier to push out by water flow and cannot be trapped in sludge.

The front end upstream face of the adjustable bottom plate 310 forms an angle of 45 degrees with the horizontal plane, so that the force direction of the upstream face is inclined upwards by 45 degrees, and the device can be pushed out backwards and upwards by water flow better.

Example 5

The invention is based on example 1:

top support 100 includes support arm 105 and L type mounting panel 101, L type mounting panel 101 fixed mounting is in the monitoring section top of arranging the mouth, go up support arm 105 horizontal installation in on the L type mounting panel 101, two movable cantilever 200 is through the activity pin junction go up support arm 105.

As shown in fig. 9 and 10, the top bracket 100 is provided with a passage through which a water intake line passes.

Example 6

The invention is based on example 1:

the movable cantilever 200 is a hollow structure, and a plurality of threading holes 213 are axially arranged at the lower end of the movable cantilever 200. Hollow structure is convenient for wear to put various sensor connecting cable, can be used to wear to put and protect sensing instrument communication power supply line, also is used for wearing to put the flexible pipeline of getting water of minor diameter, forms the protection, and the through wires hole is used for the cable to wear out the back at the bottom and connects instrument equipment.

As shown in fig. 9, the large diameter hard water intake pipe can be fixed on the back surface of the movable cantilever 200 by a simple device such as a tie, a hoop, etc. The water intake pipe moves together with the movable cantilever 200 to be surely positioned above the sludge layer, thereby preventing clogging. The water intake pipeline is mainly used for online equipment which monitors water quality through a reagent method and cannot be arranged underwater, such as total phosphorus, total nitrogen and the like.

The front instrument mounting surface 311 for horizontally placing instruments is arranged on the upstream surface of the front end of the underwater workbench 300, and the frame type instrument protection cabin 315 is arranged on the rear back surface of the underwater workbench 300. And a horizontal working surface and a vertical working surface required by the instrument are provided for integrating, installing and arranging underwater instrument equipment. The device can meet the installation and layout requirements of various monitoring instruments, and has good equipment adaptability and economy.

Example 7

The invention is based on example 1:

the upper end of the movable cantilever 200 is axially provided with a plurality of pin holes 212 which are convenient to hinge with the top bracket 100 through movable pins, and the plurality of pin holes 212 are axially arranged and used for adjusting the length of the cantilever and controlling the initial position of the underwater workbench 300 so as to adapt to different water depths.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The utility model provides a row's mouth monitoring devices with anti silt function which characterized in that: the movable framework comprises a parallelogram movable framework and an anti-silting mechanism, the movable framework comprises a top support, an underwater workbench and two movable cantilevers, the top support is horizontally and fixedly installed at the top of a monitoring section of a row opening, two ends of the top support are respectively hinged with one movable cantilever, two ends of the underwater workbench are respectively hinged with the bottom ends of the two movable cantilevers, and the top support and the underwater workbench are arranged in parallel; install the bottom of workstation under water anti silt mechanism, anti silt mechanism includes adjustable bottom plate, tensioning reed and flexible subassembly, the one end of adjustable bottom plate with the workstation is articulated under water, and the other end of adjustable bottom plate passes through flexible subassembly to be connected the other end of workstation under water, workstation and adjustable bottom plate under water are connected at the both ends of tensioning reed, make workstation, adjustable bottom plate and flexible subassembly form the triangular supports that the angle can open and shut under water.

2. The drain monitoring device with the anti-silting function according to claim 1, wherein: the telescopic assembly comprises an adjusting screw rod and a sliding joint sleeve, the sliding joint sleeve is movably arranged on the underwater workbench, and the sliding joint sleeve can rotate in the longitudinal direction of the underwater workbench; one end of the adjusting screw rod is movably connected with the adjustable bottom plate, the other end of the adjusting screw rod penetrates out of the sliding joint sleeve and is positioned above the underwater workbench, and a limiting nut is arranged at the penetrating end.

3. The drain monitoring device with the anti-silting function according to claim 2, wherein: the adjustable bottom plate is provided with a longitudinal sliding groove, and the end part of the adjusting screw rod is clamped in the longitudinal sliding groove and can move along the longitudinal sliding groove.

4. The drain monitoring device with the anti-silting function according to claim 1, wherein: the adjustable bottom plate is of a bending structure, and the width of the front end upstream surface is larger than that of the rear end backside surface.

5. The drain monitoring device with the anti-silting function according to claim 4, wherein: the front end upstream face of the adjustable bottom plate forms an angle of 45 degrees with the horizontal plane.

6. The device for monitoring the drain with the anti-silting function according to claim 1, wherein the top bracket comprises an upper support arm and an L-shaped mounting plate, the L-shaped mounting plate is fixedly mounted on the top of the monitoring section of the drain, the upper support arm is horizontally mounted on the L-shaped mounting plate, and the two movable cantilevers are connected with the upper support arm through movable pins.

7. The outlet monitoring device with an anti-silting function according to claim 1, wherein the top bracket is provided with a passage through which a water intake pipe passes.

8. The device for monitoring the drain port with the anti-silting function according to claim 1, wherein the movable cantilever is a hollow structure, and a plurality of threading holes are axially arranged at the lower end of the movable cantilever.

9. The device for monitoring the discharge outlet with the anti-silting function according to claim 1, wherein a plurality of pin holes are axially arranged at the upper end of the movable cantilever.

10. The device for monitoring the drain port with the silt resisting function according to claim 1, wherein a front instrument mounting surface for horizontally placing the instrument is arranged on a water facing surface at the front end of the underwater workbench, and a frame-type instrument protection cabin is arranged on a back water surface at the rear end of the underwater workbench.