CN113550880A

CN113550880A - Anti-blocking mud pump capable of automatically adjusting water content of sludge and dredging method thereof

Info

Publication number: CN113550880A
Application number: CN202110838612.8A
Authority: CN
Inventors: 丁彩
Original assignee: Shaoxing Yanghai Construction Co ltd
Current assignee: Shaoxing Yanghai Construction Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-10-26
Anticipated expiration: 2041-07-23
Also published as: CN113550880B

Abstract

The invention discloses an anti-blocking mud pump capable of automatically adjusting the water content of sludge and a dredging method thereof, the anti-blocking mud pump comprises a mud pump body, a water tank, a water pump and a water gun, a water filtering device is arranged on a sludge discharge port and comprises a first channel and a second channel, a first flow detection device and a second flow detection device are respectively arranged on a water inlet side and a water outlet side of the second channel, a rotating shaft connected with an output shaft of a motor axially penetrates through the first channel, a spiral plate is wound on the rotating shaft, a spring and a squeezing plate are arranged on the rotating shaft positioned at the outlet end of the first channel, the first channel is communicated with the second channel through a third channel, a one-way valve is arranged in the third channel, the outlet of the second channel is respectively connected with the water tank and the water gun through two water pipelines, and an electromagnetic flow adjusting valve is arranged on one of the water pipelines. The water content in the sludge is adjusted by adjusting the water outlet speed of the water gun, the sludge is controlled to have reasonable water content, the sludge pump can be prevented from being blocked, and the suction amount can be reduced.

Description

Anti-blocking mud pump capable of automatically adjusting water content of sludge and dredging method thereof

Technical Field

The invention belongs to the technical field of slurry pumps, and particularly relates to an anti-blocking slurry pump capable of automatically adjusting the water content of sludge and a dredging method thereof.

Background

In the hydraulic engineering, sludge in a river channel needs to be cleaned regularly, generally, river water is pumped to expose out of a river bottom and then is subjected to dredging operation through a slurry pump, in the process of cleaning the sludge through the slurry pump, the slurry pump is connected with a sludge suction pipeline, an inlet of the sludge suction pipeline is placed at a position with a lower river bed terrain, then the river bed is flushed through a water gun, the sludge is flushed to the inlet of the sludge suction pipeline to be cleaned, the sucked sludge is conveyed to a conveying tool through a conveying pipeline through a sludge discharge port of the slurry pump, and is conveyed to a sludge treatment site through the conveying tool to be treated. In the dredging process, if the water content in the sludge is too high, the sludge pump needs to operate for a longer time, a larger amount of sludge containing water is transported, the transportation cost is increased, and the working efficiency is lower; if the water content in the sludge is too low, the sludge pump is easily blocked.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the anti-blocking mud pump capable of automatically adjusting the water content of the sludge and the dredging method thereof.

In order to solve the technical problem, the invention is solved by the following technical scheme: the anti-blocking mud pump capable of automatically adjusting the water content of the sludge comprises a mud pump body, a water tank, a water pump and a water gun, wherein a sludge suction inlet and a sludge discharge port are formed in the mud pump body, a water filtering device is arranged on the sludge discharge port and comprises a first channel communicated with the sludge discharge port and a second channel communicated with the water pump, a first flow detection device and a second flow detection device are respectively arranged on the water inlet side and the water outlet side of the second channel, a motor is arranged at the outlet end of the first channel, a rotating shaft connected with an output shaft of the motor axially penetrates through the first channel, a spiral plate is wound on the rotating shaft, an extrusion plate is arranged on the rotating shaft at the outlet end of the first channel in a sliding manner, and a spring for elastically plugging the extrusion plate at the outlet end of the first channel is sleeved on the rotating shaft, the first channel is communicated with the second channel through a third channel, filter cloth is arranged at one end, connected with the second channel, of the third channel, a one-way valve is arranged in the third channel, the outlet of the second channel is respectively connected with the water tank and the water gun through two water communication pipelines, an electromagnetic flow regulating valve is arranged on one water communication pipeline, and the first flow detecting device, the second flow detecting device and the electromagnetic flow regulating valve are connected with a control device. When the mud pump operates, the water pump operates to convey water to the second channel at a constant speed, the mud pump operates to convey mud to the first channel, the mud in the first channel is driven by the spiral plate to move to the outlet position of the first channel, the water in the mud flows to the second channel from the third channel through the filter cloth due to the blocking of the extrusion plate, the water filtering amount is a detection difference value of the second flow detection device and the first flow detection device, the water filtering amount is positively correlated with the water content of the mud between the maximum value and the minimum value, if the water filtering amount is large, the water content of the mud is high, the water content of the mud is partially refluxed to the water tank when flowing through the two water through pipes, and the water is partially sprayed out from the water gun when flowing through the two water through pipes; when the water content is too high, the control device controls the opening of the electromagnetic flow regulating valve to reduce the water spraying speed of the water gun so as to reduce the water content of the subsequently sucked sludge; when the water content is too low, the control device controls the opening of the electromagnetic flow regulating valve to increase the water spraying speed of the water gun so as to improve the water content of the subsequently sucked sludge; therefore, the water outlet speed of the water gun is automatically adjusted to adjust the water content in the sludge. This kind of mud pump and squirt cooperation, the moisture content in the silt is adjusted through the play water velocity of adjusting the squirt, and control silt has reasonable moisture content, can enough prevent that the mud pump from blockking up, can reduce the suction volume again to improve the operating efficiency, and the water cyclic utilization in the silt of can sucking out when the squirt sprays reduces the water consumption, reduces the cost of transportation simultaneously.

In the above technical solution, preferably, a conical guide section, an injection region, and a vacuum chamber are sequentially disposed in the second channel along a water flow direction, and the vacuum chamber is communicated with the second channel through the third channel. The structure is adopted, so that the water flow can generate a Venturi effect in the process of passing through the second channel, the suction force is provided for the water filtered out in the first channel, and the water filtered out in the first channel can be better sucked into the second channel.

In the above technical solution, preferably, the water filtering device includes a plurality of second channels surrounding the periphery of the first channel, two ends of the plurality of second channels are connected to the water collecting cavity, the plurality of second channels are connected to the first channel through a third channel, and the first flow rate detecting device and the second flow rate detecting device are disposed at the outer sides of the two water collecting cavities. Adopt this structure can make the second passageway can be more even from each angle drainage of first passageway, the drainage effect is better, more even.

In the above technical solution, preferably, a connection portion of the third channel and the first channel is located outside the spiral plate. By adopting the structure, the water is filtered out only after the sludge enters the range of the spiral plate, and the water content of the sludge which does not enter the range of the spiral plate is ensured to be higher, the fluidity is better, and the blockage is not easy to occur.

In the above technical scheme, preferably, a filter cloth frame is arranged in the first channel, filter cloth is arranged in a gap of the filter cloth frame, the filter cloth frame is arranged in the first channel in a cylindrical shape, a sludge filtering water outlet cavity is formed between the filter cloth frame and the side wall of the first channel, and the joint of the third channel and the first channel is located on the side wall of the sludge filtering water outlet cavity. By adopting the structure, the filter cloth can be conveniently supported, the filter cloth is prevented from being rolled by the spiral plate, and a sludge filtering water cavity is formed to ensure that the water filtering effect is better.

The dredging method of the anti-blocking slurry pump capable of automatically adjusting the water content of the sludge comprises the following steps of: 1. starting a water pump to supply water to the water gun through the second channel, starting a slurry pump to suck sludge from the sludge suction port and discharge the sludge from the sludge discharge port to the first channel; 2. the first flow detection device and the second flow detection device respectively detect the inlet flow and the outlet flow of the second channel, and the control device calculates the water quantity entering the second channel from the first channel according to the difference value of the inlet flow and the outlet flow of the second channel; 3. the control device adjusts the opening of the electromagnetic flow regulating valve according to the water quantity entering the second channel from the first channel so as to control the water spraying speed of the water gun and control the water content of the sludge.

Compared with the prior art, the invention has the following beneficial effects: when the mud pump operates, the water pump operates to convey water to the second channel at a constant speed, the mud pump operates to convey mud to the first channel, the mud in the first channel is driven by the spiral plate to move to the outlet position of the first channel, the water in the mud flows to the second channel from the third channel through the filter cloth due to the blocking of the extrusion plate, the water filtering amount is a detection difference value of the second flow detection device and the first flow detection device, the water filtering amount is positively correlated with the water content of the mud between the maximum value and the minimum value, if the water filtering amount is large, the water content of the mud is high, the water content of the mud is partially refluxed to the water tank when flowing through the two water through pipes, and the water is partially sprayed out from the water gun when flowing through the two water through pipes; when the water content is too high, the control device controls the opening of the electromagnetic flow regulating valve to reduce the water spraying speed of the water gun so as to reduce the water content of the subsequently sucked sludge; when the water content is too low, the control device controls the opening of the electromagnetic flow regulating valve to increase the water spraying speed of the water gun so as to improve the water content of the subsequently sucked sludge; therefore, the water outlet speed of the water gun is automatically adjusted to adjust the water content in the sludge. This kind of mud pump and squirt cooperation, the moisture content in the silt is adjusted through the play water velocity of adjusting the squirt, and control silt has reasonable moisture content, can enough prevent that the mud pump from blockking up, can reduce the suction volume again to improve the operating efficiency, and the water cyclic utilization in the silt of can sucking out when the squirt sprays reduces the water consumption, reduces the cost of transportation simultaneously.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.

Fig. 2 is a schematic sectional structure view of a water filtering device in an embodiment of the invention.

Fig. 3 is a schematic sectional view showing another direction of the water filtering device according to the embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 3, the anti-clogging mud pump capable of automatically adjusting the moisture content of the sludge comprises a mud pump body 1, a water tank 2, a water pump 3 and a water gun 4, wherein a sludge suction port 11 and a sludge discharge port 12 are arranged on the mud pump body 1, a water filtering device 5 is arranged on the sludge discharge port 12, the water filtering device 5 comprises a first channel 51 communicated with the sludge discharge port 12 and a second channel 52 communicated with the water pump 3, a first flow detecting device 61 and a second flow detecting device 62 are respectively arranged on a water inlet side and a water outlet side of the second channel 52, a motor 59 is arranged at an outlet end of the first channel 51, a rotating shaft 510 connected with an output shaft of the motor 59 axially penetrates through the first channel 51, a spiral plate 511 is wound on the rotating shaft 510, a squeezing plate 512 is slidably arranged on the rotating shaft 510 at the outlet end of the first channel 51, and a spring 513 for elastically plugging the squeezing plate 512 at the outlet of the first channel 51 is sleeved on the rotating shaft 510, the first channel 51 is communicated with the second channel 52 through a third channel 56, one end of the third channel 56, which is connected with the second channel 52, is provided with filter cloth 7, a one-way valve 57 is arranged in the third channel 56, the outlet of the second channel 52 is respectively connected with the water tank 2 and the water gun 4 through two water through pipes 8, one water through pipe 8 is provided with an electromagnetic flow regulating valve 9, and the first flow detecting device 61, the second flow detecting device 62 and the electromagnetic flow regulating valve 9 are connected with a control device. When the slurry pump operates, the water pump 3 operates to transmit water to the second channel 52 at a constant speed, the slurry pump operates to transmit sludge to the first channel 51, the sludge in the first channel 51 is driven by the spiral plate 511 to move to the outlet position of the first channel 51, the water in the sludge flows from the third channel 56 to the second channel 52 through the filter cloth 7 due to the blocking of the extrusion plate 512, the water filtering amount is the detection difference value between the second flow detection device 62 and the first flow detection device 61, the water filtering amount is positively correlated with the water content of the sludge between the maximum value and the minimum value, if the water filtering amount is large, the water content of the sludge is high, otherwise, the water content of the sludge is low, when the water flows through the two water channels 8, a part of the water flows back to the water tank, and a part of the water flows to the water gun 4 and is sprayed out by the water gun 4; when the water content is too high, the control device controls the opening degree of the electromagnetic flow regulating valve 9 to reduce the water spraying speed of the water gun 4 so as to reduce the water content of the subsequently sucked sludge; when the water content is too low, the control device controls the opening degree of the electromagnetic flow regulating valve 9 to increase the water spraying speed of the water gun 4 so as to improve the water content of the subsequently sucked sludge; therefore, the water outlet speed of the water gun is automatically adjusted to adjust the water content in the sludge. The electromagnetic flow control valve 9 can be installed on the water pipeline 8 of the connecting water gun 4 or on the water pipeline 8 of the connecting water tank 2, in the embodiment, the electromagnetic flow control valve 9 is installed on the water pipeline 8 of the connecting water gun 4, the opening degree of the electromagnetic flow control valve 9 is increased when the water spraying speed of the water gun 4 is increased, and the opening degree of the electromagnetic flow control valve 9 is reduced when the water spraying speed of the water gun 4 is reduced; if electromagnetic flow control valve 9 is installed on the water pipeline 8 of connecting water tank 2, then will increase the water spray rate of squirt 4 and then will reduce electromagnetic flow control valve 9's aperture, will reduce the water spray rate of squirt 4 and then will increase electromagnetic flow control valve 9's aperture.

In this embodiment, a conical guide section 53, an injection region 54 and a vacuum chamber 55 are sequentially arranged in the second passage 52 along the water flow direction, and the vacuum chamber 55 is communicated with the second passage 52 through a third passage 56. By adopting the structure, the water flow can generate a Venturi effect in the process of passing through the second channel 52, so that the Venturi effect has suction force on the water filtered out from the first channel 51, and the water filtered out from the first channel 51 can be better sucked into the second channel 52.

In the operation process, the water pump 3 is used for providing water absorption power and supplying water to the water gun 4, the water filtration amount is in positive correlation with the water content of the sludge between the maximum value and the minimum value, the flow difference between the second flow detection device 62 and the first flow detection device 61 is tested by simulating the sludge with a reasonable water content range sucked by a slurry pump, the range of the flow difference between the second flow detection device 62 and the first flow detection device 61 when the water content of the sludge is in the reasonable range can be measured, whether the water content of the sludge is in the most reasonable range can be known according to the flow difference measured by the second flow detection device 62 and the first flow detection device 61, if the water content of the sludge is small, the water content of the sludge is too low, and if the water content of the sludge is large, the water content of the sludge is too high; the water content in the silt is adjusted through the water outlet speed of the water gun 4, the silt is controlled to have reasonable water content, the mud pump can be prevented from being blocked, the pumping amount can be reduced, the operation efficiency is improved, water in the silt can be sucked out when the water gun 4 sprays, the water consumption is reduced, and the transportation cost is reduced.

In this embodiment, the water filtering device 5 includes six second channels 52 uniformly surrounding the periphery of the first channel 51, two ends of the six second channels 52 are connected to the water collecting cavities 58, the six second channels 52 are connected to the first channel 51 through the third channel 56, and the first flow rate detecting device 61 and the second flow rate detecting device 62 are disposed outside the two water collecting cavities 58. By adopting the structure, the second channel 52 can filter water more uniformly from all angles of the first channel 51, and the water filtering effect is better and more uniform.

In this embodiment, in order to filter out water after the sludge enters the range of the spiral plate 511, the water content of the sludge which does not enter the range of the spiral plate 511 is ensured to be high, the fluidity is good, and the sludge is not easy to block, so the connection part of the third channel 56 and the first channel 51 is located outside the spiral plate 511.

In this embodiment, a filter cloth frame 71 is disposed in the first channel 51, a filter cloth 7 is disposed in a gap of the filter cloth frame 71, the filter cloth frame 71 is disposed in the first channel 51 in a cylindrical shape, a sludge filtering water cavity 72 is formed between the filter cloth frame 71 and a side wall of the first channel 51, and a joint of the third channel 56 and the first channel 51 is located on a side wall of the sludge filtering water cavity 72. By adopting the structure, the filter cloth 7 can be conveniently supported, the filter cloth 7 is prevented from being rolled by the spiral plate 511, and the sludge filtering water cavity 72 is formed, so that the water filtering effect is better.

The dredging method of the anti-blocking slurry pump capable of automatically adjusting the water content of the sludge comprises the following steps of: 1. starting the water pump 3 to supply water to the inlet of the second channel 52 at a constant speed, starting the slurry pump body 1 to suck sludge from the sludge suction port 11 and discharge the sludge from the sludge discharge port 12 to the first channel 51; 2. the first flow rate detecting means 61 and the second flow rate detecting means 62 detect the inlet flow rate and the outlet flow rate of the second passage 52, respectively, and the control means calculates the amount of water drawn from the first passage 51 into the second passage 52 from the difference between the inlet flow rate and the outlet flow rate of the second passage 52; 3. the control device adjusts the opening degree of the electromagnetic flow regulating valve 9 according to the water quantity sucked into the second channel 52 from the first channel 51 to control the water spraying speed of the water gun 4 so as to control the moisture content of the sludge. Since the amount of water sucked into the second channel 52 by the first channel 51 is positively correlated between the maximum and minimum values with the water content of the sludge, the flow difference between the second flow detection device 62 and the first flow detection device 61 is tested by simulating the pumping of sludge into a reasonable range of water content, the range of the flow difference between the second flow rate detecting means 62 and the first flow rate detecting means 61 when the water content of the sludge is in a reasonable range can be measured, whether the water content of the sludge is in the most reasonable range can be known according to the flow difference measured by the second flow detection device 62 and the first flow detection device 61, if the water content of the sludge is small, the water content of the sludge is too low, if the water content of the sludge is large, the water content of the sludge is too high, when the water content is too high, the control device controls the opening degree of the electromagnetic flow regulating valve 9 to reduce the water spraying speed of the water gun 4 so as to reduce the water content of the subsequently sucked sludge; when the water content is too low, the control device controls the opening degree of the electromagnetic flow regulating valve 9 to increase the water spraying speed of the water gun 4, so that the water content of the subsequently sucked sludge is improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. Automatic adjust jam slush pump of silt moisture content, including slush pump body (1), water tank (2), water pump (3) and squirt (4), be provided with silt sunction inlet (11) and silt discharge port (12) on slush pump body (1), its characterized in that: the sludge draining device (12) is provided with a water filtering device (5), the water filtering device (5) comprises a first channel (51) communicated with the sludge draining port (12) and a second channel (52) communicated with the water pump (3), a first flow detection device (61) and a second flow detection device (62) are respectively arranged on the water inlet side and the water outlet side of the second channel (52), the outlet end of the first channel (51) is provided with a motor (59), a rotating shaft (510) connected with the output shaft of the motor (59) axially penetrates through the first channel (51), a spiral plate (511) is wound on the rotating shaft (510), a squeezing plate (512) is arranged on the rotating shaft (510) at the outlet end of the first channel (51) in a sliding manner, and a spring (513) for elastically plugging the squeezing plate (512) at the outlet of the first channel (51) is sleeved on the rotating shaft (510), the first channel (51) is communicated with the second channel (52) through a third channel (56), filter cloth (7) is arranged at one end, connected with the second channel (52), of the third channel (56), a one-way valve (57) is arranged in the third channel (56), the outlet of the second channel (52) is respectively connected with the water tank (2) and the water gun (4) through two water passing pipelines (8), one of the water passing pipelines (8) is provided with an electromagnetic flow regulating valve (9), and the first flow detecting device (61), the second flow detecting device (62) and the electromagnetic flow regulating valve (9) are connected with a control device.

2. The anti-clogging mud pump capable of automatically adjusting the water content of the sludge as claimed in claim 1, wherein: the second channel (52) is internally provided with a conical guide section (53), a spraying area (54) and a vacuum chamber (55) in sequence along the water flow direction, and the vacuum chamber (55) is communicated with the second channel (52) through the third channel (56).

3. The anti-clogging mud pump capable of automatically adjusting the water content of the sludge as claimed in claim 1, wherein: the water filtering device (5) comprises a plurality of second channels (52) surrounding the periphery of the first channel (51), the two ends of each second channel (52) are connected to a water collecting cavity (58), the second channels (52) are connected with the first channel (51) through third channels (56), and the first flow detection device (61) and the second flow detection device (62) are arranged on the two outer sides of the water collecting cavities (58).

4. The anti-clogging mud pump capable of automatically adjusting the water content of the sludge as claimed in claim 1, wherein: the junction of the third channel (56) and the first channel (51) is located outside the spiral plate (511).

5. The anti-clogging mud pump capable of automatically adjusting the water content of the sludge as claimed in claim 1, wherein: be provided with filter cloth frame (71) in first passageway (51), be provided with filter cloth (7) in the clearance of filter cloth frame (71), filter cloth frame (71) be the cylinder set up in first passageway (51), filter cloth frame (71) with it strains water cavity (72) to form silt between first passageway (51) lateral wall, third passageway (56) with the junction of first passageway (51) is located silt is strained water cavity (72) lateral wall.

6. The dredging method of the anti-clogging slurry pump for automatically adjusting the water content of the sludge according to any one of claims 1 to 5, comprising the steps of: 1. starting a water pump (3) to supply water to the inlet of the second channel (52) at a constant speed, starting a mud pump body (1) to suck mud from a mud suction port (11) and discharge the mud from a mud discharge port (12) to the first channel (51); 2. a first flow rate detecting means (61) and a second flow rate detecting means (62) respectively detecting an inlet flow rate and an outlet flow rate of the second passage (52), the control means calculating an amount of water sucked from the first passage (51) into the second passage (52) from a difference between the inlet flow rate and the outlet flow rate of the second passage (52); 3. the control device adjusts the opening degree of the electromagnetic flow regulating valve (9) according to the water quantity sucked into the second channel (52) from the first channel (51) to control the water spraying speed of the water gun (4) so as to control the moisture content of the sludge.