阅读说明：本技术 一种水下清沙装置 (Underwater sand cleaning device ) 是由 徐振山 许驰远 王卓 刘鑫 于 2021-05-27 设计创作，主要内容包括：本发明公开了一种水下清沙装置,包括有机架、安装于机架两侧用于移动的移动模组、安装于机架前部用于对水槽进行清洗的清刷模组、安装于机架下部对含有颗粒泥沙水体的抽滤模组、安装于机架内部两侧的压载模组、安装于机架底部用于推动机架上浮的螺旋桨、安装于机架上部的控制模组和密封机构。本发明通过安装于机架前部用于对水槽进行清洗的清刷模组,带动水槽底部沉积泥沙而使泥沙扬起,同时利用安装于机架下部对含有颗粒泥沙水体的抽滤模组将含有大量泥沙的水抽进装置内部,经过滤后排除,以达到逐步降低水中沉积泥沙颗粒数量的效果,减少清理水槽中沉积泥沙时的人力和时间,并对水槽实现,全覆盖清刷,可靠度高,结构、操作简易。(The invention discloses an underwater sand cleaning device which comprises a rack, moving modules, a cleaning module, a suction filtration module, ballast modules, propellers, a control module and a sealing mechanism, wherein the moving modules are arranged on two sides of the rack and used for moving, the cleaning module is arranged at the front part of the rack and used for cleaning a water tank, the suction filtration module is arranged at the lower part of the rack and used for filtering a water body containing granular silt, the ballast modules are arranged on two sides in the rack, the propellers are arranged at the bottom of the rack and used for pushing the rack to float upwards, and the control module and the sealing mechanism are arranged at the upper part of the rack. According to the invention, the cleaning and brushing module which is arranged at the front part of the rack and used for cleaning the water tank drives the sediment deposited at the bottom of the water tank to lift the sediment, and meanwhile, the suction filtration module which is arranged at the lower part of the rack and used for pumping water containing a large amount of sediment into the device is used for removing the water after filtration, so that the effect of gradually reducing the number of sediment particles in the water is achieved, the manpower and time for cleaning the sediment deposited in the water tank are reduced, the water tank is cleaned in a full-coverage manner, the reliability is high, and the structure and the operation are simple and easy.)

1. An underwater sand cleaning device is characterized by comprising a rack, a cleaning module, a suction filtration module, a ballast module and a control module;

the cleaning and brushing module is arranged at the front part of the frame and is used for cleaning and brushing the water body containing silt and sending the water body containing silt into the suction filtration module;

the suction filtration module is arranged at the lower part of the frame and is used for filtering and separating the sand-containing water body after the sand-containing water body sent by the cleaning and brushing module is sucked, storing silt and discharging the sand-free water body;

the ballast modules are symmetrically arranged at the rear ends of two sides in the frame and used for improving the ground grabbing force of the sand cleaning device, so that the sand cleaning device can stably work at the water bottom;

the control module is arranged above the rack and used for controlling the operation of the sand cleaning device.

2. An underwater sand cleaning device according to claim 1, wherein the cleaning module includes a cleaning motor, a rotary reciprocating mechanism, and a brush disc; the cleaning motor is arranged in a vacant bin in the front of the frame, the cleaning motor is connected with the brush disc through a rotary reciprocating mechanism connected below the vacant bin, and continuous rotation of the brush disc is realized through the rotary reciprocating mechanism.

3. An underwater sand cleaning device according to claim 2, wherein the number of the rotary reciprocating mechanisms is two, and the rotary reciprocating mechanisms include a worm connected to the cleaning motor, a worm wheel engaged with the worm, a transmission shaft connected to the worm wheel, a fixed hinge for fixing the worm wheel to the transmission shaft, and a layer surface limit sleeve.

4. The underwater sand cleaning device of claim 1, wherein the suction filtration module comprises a water inlet valve port, a Starter tube, a sand storage cylinder, a water inlet tube, a filter screen, an impeller and a water outlet tube;

the water inlet valve port is arranged on the inner side of a front panel of the frame, and the valve port is superposed with the panel and faces the cleaning module;

the stewart tube is connected with the water inlet valve port;

the filter screen is arranged at the opening of the water inlet pipe;

the sand storage cylinder is arranged on the outer sides of the stewart tower pipe and the water inlet pipe and is sealed relative to the outside;

the impeller is arranged at the tail end of the water inlet pipe;

the water outlet pipe is connected with the impeller, and the outlet of the water outlet pipe is arranged on a panel at the tail part of the frame;

the sand-containing water body cleaned by the cleaning module enters the suction filtration module from the water inlet valve, and under the centrifugal force action of the Stent tower tube, silt in the water body is dispersed into the sand storage cylinder, and is discharged from the water inlet tube, the impeller and the water outlet tube after being filtered by the filter screen, so that the filtering action is completed.

5. An underwater sand cleaning device as claimed in claim 1, wherein the ballast module includes a ballast tank, a ballast valve, a ballast pump and a rotary motor; the ballast valve comprises a door plate, a stripe rotating shaft arranged on one side of the door plate and a driving shaft connected with the stripe rotating shaft through a coupler;

the ballast valve is arranged on the inner side of the bottom plate of the rack and used for mechanically controlling the opening and closing of the ballast module in and out of the water body;

the ballast tank is connected with the ballast valve, is relatively sealed with the inside of the frame and is used for bearing a water body;

the ballast pump is positioned at the rear side in the ballast tank and used for controlling the suction force on the bearing water body;

the rotating motor is used for driving the ballast valve to be opened and closed and driving the ballast pump to suck and discharge the bearing water body.

6. The underwater sand cleaning device as claimed in claim 1, wherein the control module comprises a single chip microcomputer main control module for controlling the sand cleaning device, a power supply module for supplying power and a motor driving module for controlling various motors to perform actions.

7. The underwater sand cleaning device of claim 6, wherein the control module is sealed by a sealing mechanism to ensure that the control module is not damaged by water inflow under water;

the sealing mechanism comprises a sealed cabin for sealing and installing the control module and a supporting frame for fixing.

8. The underwater sand cleaning device according to claim 1, further comprising a moving module, wherein the moving module comprises a steering advancing mechanism mounted on two side panels of the frame and a lifting mechanism mounted at the bottom of the frame, and is used for driving the sand cleaning device;

the steering advancing mechanism comprises a crawler belt arranged on the outer side of two side panels of the frame, a driving motor arranged on the inner side of the two side panels of the frame, transmission shafts penetrating through the two sides of the frame, a driving wheel meshed with the inner side of the crawler belt to realize linkage, and a driven wheel arranged on one side of the two side panels of the frame far away from the driving wheel and meshed with the inner side wall of the crawler belt; the driving motor drives the transmission shaft, the driving wheel, the driven wheel and the crawler belt in sequence to control the advancing, retreating and steering of the sand cleaning device;

the lifting mechanism is a propeller, the number of the propellers is three, the first propeller is arranged on the middle line of the width direction of the rack, the distance between the first propeller and the front panel of the rack is one fourth of the length of the rack, the second propeller and the third propeller are symmetrically arranged on the bottom surface of the rack on the middle line of the width direction, the distance between the two propellers is one half of the width of the rack, and the distance between the two propellers and the tail panel of the rack is one third of the length of the rack.

9. An underwater sand cleaning device according to claim 1, further comprising a sand inclusion rate detecting device mounted to the head of the frame for measuring the sand inclusion rate in the body of water.

10. A method of underwater sand cleaning, characterized in that, using any one of the underwater sand cleaning devices of claims 1-9, the sand cleaning step is:

putting the sand cleaning device under water, slowly sinking the sand cleaning device under the action of gravity, opening the ballast module after the sand cleaning device reaches the bottom of the pool, and flushing the water body into the ballast tank so as to increase the gravity of the sand cleaning device and tightly attach the sand cleaning device to the bottom of the water body;

after the ballast process is finished, starting a cleaning motor, starting the sand cleaning device to operate, enabling the movable module to pass through the crawler belt, driving the motor to carry out power driving so as to drive the crawler belt to travel, and starting the cleaning motor to drive the brush disc to carry out cleaning work;

after the brush disc starts to rotate, the suction filtration module starts to work by power supply, silt particles started and floated by the rotation of the brush disc are sucked in from the water inlet valve port by the suction filtration module, and the water body is discharged by the water outlet pipe after the silt in the sandy water body is filtered by the suction filtration module;

after the suction filtration module works, the detection device measures the sand content in water, and the advancing speed of the sand cleaning device is controlled according to the measurement result;

when the cleaning operation is finished, the driving motor, the cleaning motor and other devices stop working, a drainage pump in the ballast module starts working, and water in the ballast tank is drained; after the water in the ballast tank is emptied, the propeller at the bottom of the frame of the sand cleaning device starts to work to push the sand cleaning device to the water surface, and after the sand cleaning device floats out of the water surface, the sand cleaning operation is finished.

Technical Field

The invention relates to an underwater sand removal device, and belongs to the field of harbor basin water tank cleaning and purification in a hydraulics experiment.

Background

In the current research experiment related to the movement of silt in water in a harbor basin and a water tank, a large amount of silt particles with different particle sizes are often used. And because of the silt particle that the experiment demand was used generally is difficult to the sanitization after the experiment, its reason lies in that ordinary pumping mechanism often only can extract out with the water in the basin, and silt therein nevertheless often can deposit at the bottom to silt particle is difficult to with ordinary mode sanitization, and does not often can produce harmful effects to follow-up experiment with silt particle sanitization.

At present, a manual mode is often adopted for cleaning a small water tank or a harbor basin, and experimenters need to clean the water tank repeatedly, so that much time is consumed for cleaning an experimental device after a test; for some experimental water bodies containing carcinogens, the cleaning in a manual mode is time-consuming, and the body of an experimenter is greatly injured, so that the experiment cannot be carried out efficiently and safely.

Disclosure of Invention

The invention aims to overcome the defects that the steps are complicated, time and labor are consumed, cleaning is not thorough or cannot be performed under certain specific conditions when testers in the existing hydraulics related experiments clean silt particles in water tanks and harbor ponds, and the like, and the novel underwater sand cleaning device is simple and convenient to operate, strong in maneuverability, time-saving and labor-saving and capable of efficiently cleaning the silt particles in the water tanks.

In order to solve the technical problems, the invention is realized by adopting the following technical scheme:

an underwater sand cleaning device comprises a frame, a cleaning module, a suction filtration module, a ballast module and a control module;

the cleaning and brushing module is arranged at the front part of the frame and is used for cleaning and brushing the water body containing silt and sending the water body containing silt into the suction filtration module;

the suction filtration module is arranged at the lower part of the frame and is used for filtering and separating the sand-containing water body after the sand-containing water body sent by the cleaning and brushing module is sucked, storing silt and discharging the sand-free water body;

the ballast modules are symmetrically arranged at the rear ends of two sides in the frame and used for improving the ground grabbing force of the sand cleaning device, so that the sand cleaning device can stably work at the water bottom;

the control module is arranged above the rack and used for controlling the operation of the sand cleaning device.

Furthermore, the cleaning module comprises a cleaning motor, a rotary reciprocating mechanism and a brush disc; the cleaning motor is arranged in a vacant bin in the front of the frame, the cleaning motor is connected with the brush disc through a rotary reciprocating mechanism connected below the vacant bin, and continuous rotation of the brush disc is realized through the rotary reciprocating mechanism.

Furthermore, the rotary reciprocating mechanisms are divided into two parts, and each part comprises a worm connected with the brushing motor, a worm wheel meshed with the worm, a transmission shaft connected with the worm wheel, a fixed hinge joint for fixing the worm wheel on the transmission shaft and a layer surface limiting sleeve.

Furthermore, the suction filtration module comprises a water inlet valve port, a Stent tower pipe, a sand storage cylinder, a water inlet pipe, a filter screen, an impeller and a water outlet pipe;

the water inlet valve port is arranged on the inner side of a front panel of the frame, and the valve port is superposed with the panel and faces the cleaning module;

the stewart tube is connected with the water inlet valve port;

the filter screen is arranged at the opening of the water inlet pipe;

the sand storage cylinder is arranged on the outer sides of the stewart tower pipe and the water inlet pipe and is sealed relative to the outside;

the impeller is arranged at the tail end of the water inlet pipe;

the water outlet pipe is connected with the impeller, and the outlet of the water outlet pipe is arranged on a panel at the tail part of the frame;

the sand-containing water body cleaned by the cleaning module enters the suction filtration module from the water inlet valve, and under the centrifugal force action of the Stent tower tube, silt in the water body is dispersed into the sand storage cylinder, and is discharged from the water inlet tube, the impeller and the water outlet tube after being filtered by the filter screen, so that the filtering action is completed.

Further, the ballast module comprises a ballast tank, a ballast valve, a ballast pump and a rotating motor; the ballast valve comprises a door plate, a stripe rotating shaft arranged on one side of the door plate and a driving shaft connected with the stripe rotating shaft through a coupler;

the ballast valve is arranged on the inner side of the bottom plate of the rack and used for mechanically controlling the opening and closing of the ballast module in and out of the water body;

the ballast tank is connected with the ballast valve, is relatively sealed with the inside of the frame and is used for bearing a water body;

the ballast pump is positioned at the rear side in the ballast tank and used for controlling the suction force on the bearing water body;

the rotating motor is used for driving the ballast valve to be opened and closed and driving the ballast pump to suck and discharge the bearing water body.

Furthermore, the control module group comprises a single chip microcomputer main control module for controlling the sand cleaning device, a power supply module for supplying power and a motor driving module for controlling various motors to execute actions.

Furthermore, the control module is sealed through a sealing mechanism, so that the control module is prevented from being damaged due to water inflow under water;

the sealing mechanism comprises a sealed cabin for sealing and installing the control module and a supporting frame for fixing.

Furthermore, the sand cleaning device also comprises a moving module, wherein the moving module comprises a steering advancing mechanism arranged on two side panels of the rack and a lifting mechanism arranged at the bottom of the rack and is used for driving the sand cleaning device;

the steering advancing mechanism comprises a crawler belt arranged on the outer side of two side panels of the frame, a driving motor arranged on the inner side of the two side panels of the frame, transmission shafts penetrating through the two sides of the frame, a driving wheel meshed with the inner side of the crawler belt to realize linkage, and a driven wheel arranged on one side of the two side panels of the frame far away from the driving wheel and meshed with the inner side wall of the crawler belt; the driving motor drives the transmission shaft, the driving wheel, the driven wheel and the crawler belt in sequence to control the advancing, retreating and steering of the sand cleaning device;

the lifting mechanism is a propeller, the number of the propellers is three, the first propeller is arranged on the middle line of the width direction of the rack, the distance between the first propeller and the front panel of the rack is one fourth of the length of the rack, the second propeller and the third propeller are symmetrically arranged on the bottom surface of the rack on the middle line of the width direction, the distance between the two propellers is one half of the width of the rack, and the distance between the two propellers and the tail panel of the rack is one third of the length of the rack.

Furthermore, the sand cleaning device also comprises a sand content rate detection device which is arranged at the head of the frame and used for measuring the sand content rate in the water body.

The invention also provides an underwater sand cleaning method using the sand cleaning device, which comprises the following sand cleaning steps:

putting the sand cleaning device under water, slowly sinking the sand cleaning device under the action of gravity, opening the ballast module after the sand cleaning device reaches the bottom of the pool, and flushing the water body into the ballast tank so as to increase the gravity of the sand cleaning device and tightly attach the sand cleaning device to the bottom of the water body;

after the ballast process is finished, starting a cleaning motor, starting the sand cleaning device to operate, enabling the movable module to pass through the crawler belt, driving the motor to carry out power driving so as to drive the crawler belt to travel, and starting the cleaning motor to drive the brush disc to carry out cleaning work;

after the brush disc starts to rotate, the suction filtration module starts to work by power supply, silt particles started and floated by the rotation of the brush disc are sucked in from the water inlet valve port by the suction filtration module, and the water body is discharged by the water outlet pipe after the silt in the sandy water body is filtered by the suction filtration module;

after the suction filtration module works, the detection device measures the sand content in water, and the advancing speed of the sand cleaning device is controlled according to the measurement result;

when the cleaning operation is finished, the driving motor, the cleaning motor and other devices stop working, a drainage pump in the ballast module starts working, and water in the ballast tank is drained; after the water in the ballast tank is emptied, the propeller at the bottom of the frame of the sand cleaning device starts to work to push the sand cleaning device to the water surface, and after the sand cleaning device floats out of the water surface, the sand cleaning operation is finished.

Compared with the prior art, the invention has the following beneficial effects:

(1) the bottom of the water tank and the bottom of the harbor basin can be well cleaned by the cleaning and brushing module arranged at the front end of the rack, silt attached to the bottom of the water tank and the harbor basin can be started and floated by the rotation of the brush discs, the brush discs are symmetrically arranged and rotate in opposite directions, the silt between the two brush discs can be started to the greatest extent, the silt floated in the water body is quickly sucked into the suction and filtration module by matching with the suction and filtration function of the suction and filtration module, the silt is filtered by the filter screen and is kept in the suction and filtration module, and the filtered water body is discharged through the water outlet pipe;

(2) the ballast module can increase the gravity of the sand cleaning device sinking to the water bottom so as to enhance the ground grabbing force of the sand cleaning device, reduce the difficulty of advancing and working of the sand cleaning device at the water bottom, and enable the sand cleaning device to adapt to more different water bottom environments, thereby enabling the cleaning to be more sufficient and efficient;

(3) the sand content of the area where the sand cleaning device is located is measured through the sand content detection device, the advancing speed and the retention time of the sand cleaning device at the current position are judged, the working pertinence is increased, and the purpose of high-efficiency working is achieved;

(4) after the sand cleaning process is finished and the water in the ballast tank is discharged, the bottom propeller rotates to generate upward thrust on the sand cleaning device, so that the sand cleaning device floats out of the water surface, and the operation is finished; the sand cleaning device is simple in overall structure and convenient and reliable to operate.

Drawings

FIG. 1 is a perspective view of a cleaning apparatus according to embodiment 1 of the present invention;

FIG. 2 is a longitudinal sectional view of a cleaning apparatus in example 1 of the present invention;

FIG. 3 is a side view showing the structure of a cleaning apparatus in example 1 of the present invention;

FIG. 4 is a front view of a rotary reciprocating mechanism of the sweeping device in embodiment 1 of the present invention;

FIG. 5 is a perspective view of the ballast module;

FIG. 6 is a partial view of the ballast module

FIG. 7 is a perspective view of a control module;

in the figure: a frame 1; a cleaning and brushing module 2; a brush motor 21; a rotary reciprocating mechanism 22; a worm 221; a worm gear 222; a drive shaft 223; a fixed hinge link 224; a layer surface limit sleeve 225; a brush plate 23; a suction filtration module 3; a water inlet valve 31; a Starter tube 32; a sand storage tank 33; an inlet pipe 34; a screen 35; an impeller 36; a water outlet pipe 37; a ballast module 4; a ballast tank 41; a ballast valve 42; a door panel 421; a striped rotating shaft 422; a coupling 423; a drive shaft 424; a ballast pump 43; a rotating motor 44; a control module 5; a single chip main control module 51; a power supply module 52; a motor drive module 53; a sealing mechanism 6; a sealed cabin 61; a support frame 62; a moving module 7; a drive motor 71; a drive shaft 72; a drive wheel 73; a driven pulley 74; a crawler belt 75; a propeller 76; a detection device 8.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1

As shown in fig. 1-7, an underwater sand cleaning device comprises a frame 1, a cleaning module 2, a suction filtration module 3, a ballast module 4 and a control module 5, wherein the frame 1 is rectangular, and each panel of the frame 1 can be used for mounting other modules; the cleaning and brushing module 2 is arranged at the front part of the frame 1 and is used for cleaning and brushing the water body containing silt and sending the water body containing silt into the suction filtration module; the suction filtration module 3 is arranged at the lower part of the frame 1 and is used for filtering and separating the sand-containing water body after being sucked into the sand-containing water body sent by the cleaning and brushing module 2, storing silt and discharging the sand-free water body; the ballast modules 4 are symmetrically arranged at the rear ends of two sides in the frame 1 and are used for improving the ground grabbing force of the sand cleaning device, so that the sand cleaning device can stably work at the water bottom; the control module 5 is arranged above the frame 1 and used for controlling the operation of the sand cleaning device.

Wherein, the cleaning module 2 comprises a cleaning motor 21, a rotary reciprocating mechanism 22 and a brush disc 23; the two brushing motors 21 are symmetrical to the middle line of the width direction of the rack 1 and are arranged in the front end of the rack 1, the brushing motors 21 are connected with the brush disc 23 through a rotary reciprocating mechanism 22 connected below the empty bin, and the continuous rotation of the brush disc 23 is realized through the rotary reciprocating mechanism 22; the rotary reciprocating mechanism 22 has two parts, including a worm 221 connected to the brushing motor 21, a worm wheel 222 engaged with the worm 221, a transmission shaft 223 connected to the worm wheel 222, a fixed hinge 224 for fixing the worm wheel 222 to the transmission shaft 223, and a layer spacing sleeve 225. The brushing motor 21 transmits torque to the brush disc 23 through the meshing of the worm 221 and the worm wheel 222, and the worm wheel 222 cannot rotate relative to the transmission shaft 23 after being connected with the transmission shaft 223 through the layer limiting sleeve 225 and the fixed hinge 224, so that the effect of synchronous rotation of the worm wheel 222 and the brush disc 23 is realized.

The suction filtration module 3 comprises a water inlet valve port 31, a stett tower pipe 32, a sand storage cylinder 33, a water inlet pipe 34, a filter screen 35, an impeller 36 and a water outlet pipe 37; the water inlet valve port 31 is arranged on the inner side of a front panel of the frame 1, and the valve port is superposed with the panel and faces the cleaning module 2; the stewart tube 32 is connected with the water inlet valve port 31; the filter screen 35 is arranged at the nozzle of the water inlet pipe 34; the sand storage cylinder 33 is arranged outside the Stent tower pipe 32 and the water inlet pipe 34 and is sealed relative to the outside; the impeller 36 is arranged at the tail end of the water inlet pipe 34; the water outlet pipe 37 is connected with the impeller 36, and the outlet of the water outlet pipe 37 is installed on the tail panel of the machine frame 1. Wherein, after suction filtration module 3 began to operate, the stet tower pipe 32 took place to rotate to drive its inside through the water, utilize centrifugal force to store sand section of thick bamboo 33 with silt separation in the water, stet tower pipe 32 and inlet tube 34, filter screen 35 all are located and store sand section of thick bamboo 33 inside, and with outside relatively sealed. The screen 35 can filter the sand and sand that are not completely removed from the water body after passing through the startower tube 32. The fully filtered water is discharged through the subsequent water inlet pipe 34, impeller 36 and water outlet pipe 37.

The ballast module 4 comprises a ballast tank 41, a ballast valve 42, a ballast pump 43 and a rotating motor 44; wherein, the ballast valve 42 comprises a door plate 421, a stripe rotating shaft 422 arranged at one side of the door plate 421 and a driving shaft 424 connected with the stripe rotating shaft 422 through a coupling 423; the ballast valve 42 is arranged on the inner side of the bottom plate of the frame 1 and is used for mechanically controlling the opening and closing of the ballast module 4 in and out of the water body; the ballast tank 42 is connected with the ballast valve 42, is relatively sealed with the inside of the frame 1 and is used for bearing water; the ballast pump 43 is positioned at the rear side inside the ballast tank 42 and is used for controlling the suction force on the bearing water body; the rotating motor 44 is used for driving the ballast valve 42 to open and close and driving the ballast pump 43 to suck and discharge the load-bearing water body. Two groups of ballast modules 4 are symmetrically arranged at the rear ends of two sides in the frame 1, a driving shaft 424 starts to rotate under the action of a rotating motor 44, and a stripe rotating shaft 422 starts to rotate under the driving of a coupler 423, so that a toothed ballast valve door plate 421 meshed with the stripe rotating shaft 422 is opened and closed; after the ballast valve 42 is opened, the water body enters the ballast tank 41, after the ballast tank 41 is full of water, the ballast valve 42 is closed, the dead weight of the cleaning device ballasted by the ballast module 4 is increased, the ground holding force of the water tank or the harbor basin ground is improved, and the work is more stable and efficient.

In the embodiment of the invention, a moving module 7 is also arranged outside the cleaning device and used for driving the sand cleaning device, and the moving module 7 comprises a steering advancing mechanism arranged on two side panels of the rack and a propeller 76 arranged at the bottom of the rack; the steering advancing mechanism comprises a crawler 75 arranged on the outer side of two side panels of the frame 1, a driving motor 71 arranged on the inner side of the two side panels of the frame 1, a transmission shaft 72 penetrating through two sides of the frame, a driving wheel 73 engaged with the inner side of the crawler 75 to realize linkage, and a driven wheel 74 arranged on one side of the two side panels of the frame 1 far away from the driving wheel 73 and engaged with the inner side wall of the crawler 75; the driving motor 71 drives a driving wheel 73 through a transmission shaft 72 penetrating through the machine frame 1, the driving wheel 73 and a driven wheel 74 have the same radius, are arranged parallel to the machine frame 1 and have the same distance between the wheel center and the bottom surface of the machine frame 1; under the action of the driving motor 71, the driving wheel 73 rotates and is meshed with the crawler 75 to drive the crawler 75 to rotate, the driven wheel 74 is driven at the other end of the frame 1, namely, the driving motor 71 drives the transmission shaft 72, the driving wheel 73, the driven wheel 74 and the crawler 75 in sequence to control the advancing, retreating and steering of the sand cleaning device; and the first propeller 76 is arranged on the middle line of the width direction of the frame, the distance from the front panel of the frame is one fourth of the length of the frame, the second propeller and the third propeller are symmetrically arranged on the bottom surface of the frame on the middle line of the width direction, the distance between the two propellers is one half of the width of the frame, and the distance between the two propellers is one third of the length of the frame from the tail panel of the frame.

The control module 5 comprises a single chip microcomputer main control module 51 for controlling the sand cleaning device, a power supply module 52 for supplying power and a motor driving module 53 for controlling various motors to execute actions. The sand cleaning device also comprises a sand content rate detection device 8, and the sand content rate detection device 8 is arranged at the head of the frame 1 and used for measuring the sand content rate in the water body. The singlechip main control module 51 can judge the advancing speed of the sand cleaning device, the staying time at the current position and the cleaning speed according to the sand containing rate obtained by the detection device 8, and formulate an advancing route to shorten the working time. The power module 52 is a lithium battery, is energy-saving, environment-friendly, durable and used for maintaining various operations of the whole sand cleaning device and meeting energy requirements. The driving motor 71, the brushing motor 21 and the suction filtration module 3 are controlled by the motor driving module 53, respond to the singlechip main control module 51 and are powered by the power module 52. After power module 52 supplies power: the driving motor 71 starts to work, the moving module 7 is operated, and the special work of sand cleaning can move forward and backward; the cleaning motor 21 starts working, the cleaning module 2 starts working, and the brush disc 23 starts cleaning; the suction filtration module 3 starts to work and filters the water body; the ballast valve 42 starts to work to ballast the sand cleaning device; after the operation is completed, the power module 52 supplies power to the ballast pump 43 to pump out the water in the ballast tank 41.

In order to ensure that the singlechip main control module 51, the power supply module 52 and the motor drive module 53 in the control module 5 are damaged due to water inflow, a sealing mechanism 6 is further arranged outside the control module 5 for sealing, wherein the sealing mechanism 6 comprises a sealing cabin 61 for sealing and installing the control module 5 and a support frame 62 for fixing.

Example 2

The invention also provides a method for underwater sand removal, which can be used for filtering and removing sand from a sand-containing water body under a water tank and a harbor basin by adopting the sand removal device in the embodiment 1, and comprises the following operation steps:

putting the sand cleaning device under water, slowly sinking the sand cleaning device under the action of gravity, opening the ballast module after the sand cleaning device reaches the bottom of the pool, and flushing the water body into the ballast tank so as to increase the gravity of the sand cleaning device and tightly attach the sand cleaning device to the bottom of the water body;

after the ballast process is finished, starting a cleaning motor, starting the sand cleaning device to operate, enabling the movable module to pass through the crawler belt, driving the motor to carry out power driving so as to drive the crawler belt to travel, and starting the cleaning motor to drive the brush disc to carry out cleaning work;

after the brush disc starts to rotate, the suction filtration module starts to work by power supply, silt particles started and floated by the rotation of the brush disc are sucked in from the water inlet valve port by the suction filtration module, and the water body is discharged by the water outlet pipe after the silt in the sandy water body is filtered by the suction filtration module;

after the suction filtration module works, the detection device measures the sand content in water, and the advancing speed of the sand cleaning device is controlled according to the measurement result;

when the cleaning operation is finished, the driving motor, the cleaning motor and other devices stop working, a drainage pump in the ballast module starts working, and water in the ballast tank is drained; after the water in the ballast tank is emptied, the propeller at the bottom of the frame of the sand cleaning device starts to work to push the sand cleaning device to the water surface, and after the sand cleaning device floats out of the water surface, the sand cleaning operation is finished.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.