Suction pipeline anti-blocking and cleaning system, control method and suction vehicle

Abstract

The application discloses a kind of suction pipeline anti-blocking and cleaning system, control method and suction vehicle, when suction vehicle is operated, open anti-blocking system, can find pipe blockage in time, automatically close suction fan, open flush fan, clean pipeline, after pipeline dredging, automatically open suction fan, close flush fan, carry out normal suction operation.When pipe blockage is encountered again, the above operation is automatically repeated, without manual judgment whether pipe blockage, fully realize automatic switching, effectively prevent pipe blockage, and further protect motor.Dredging pipe blockage does not need manual operation, improves work efficiency.After suction, open cleaning system, under the joint action of high-pressure air and water, form water jet to automatically clean pipeline, save water consumption, cleaning effect is good, without disassembling pipeline, without manual cleaning, improve cleaning efficiency.

Description

Technical Field

[0001] The invention relates to a suction pipeline anti-blocking and cleaning system, a control method and a suction vehicle, and belongs to the technical field of suction. Background Art

[0002] A suction vehicle is a piece of equipment that applies vacuum suction technology to special operations. That is, a fan is used to draw the inside of the tank into a vacuum state, forming a certain pressure difference with the external environment, and using the pressure difference to press the medium into the tank through the suction pipeline. During the suction process, when the suctioned medium is relatively viscous or presents blocky sediment, the suction pipeline often becomes clogged, causing the fan to suffocate and thus damaging the motor. Cleaning clogged pipes is very difficult, which increases the labor intensity of construction workers and reduces suction efficiency. In addition, after the construction of the suction vehicle is completed, a layer of dirt often adheres to the inner wall of the suction pipeline. If it is not cleaned in time, it will dry and stick to the inner wall of the pipeline. The next time it is used, it will be more likely to adhere to dirt, increasing the risk of pipe blockage and affecting subsequent use. Therefore, it is necessary to clean the inner wall of the pipeline after each construction.

[0003] In existing pipeline anti-blocking technologies, installing a crushing device at the pipeline inlet has a complex structure, which reduces the flexibility and reliability of the suction pipeline end and has poor adaptability. Since the suction pipeline is flexible, installing a vibration device on the pipeline cannot vibrate the pipeline as a whole, so the method of installing a vibration device on the suction pipeline is not applicable. Directly adding a filter device at the pipeline inlet can only suck in fine particles or liquids, limiting the suction range. Installing multiple pressure measurement points in the pipeline can only determine where the blockage occurs and shut down the suction pump in time, but cannot prevent the blockage. Therefore, the above pipeline anti-blocking technologies are not suitable for the suction pipelines of suction vehicles.

[0004] In the existing suction pipeline cleaning technology, a brush is sent into the pipeline and the pipe wall is cleaned by driving the brush, which requires an additional cleaning device. The cleaning is troublesome, time-consuming and labor-intensive. At the same time, the suction pipeline is a hose. The cleaning method for petrochemical pipelines is not suitable for the suction pipelines of suction vehicles and has no practical application. Summary of the Invention

[0005] In order to address the deficiencies of the prior art, the purpose of the present invention is to provide a suction pipeline anti-blocking and cleaning system, a control method and a suction vehicle, which solve the problems of suction pipeline anti-blocking and cleaning in the prior art.

[0006] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0007] A suction pipeline anti-blocking and cleaning system, comprising an anti-blocking system and a cleaning system. The anti-blocking system comprises a tank, a suction pipeline, a suction blower, a first pressure sensor, a suction valve, a second pressure sensor, and a common device. The common device is a device shared by the anti-blocking system and the cleaning system, comprising a flushing blower, a flushing valve, and a controller.

[0008] The suction pipeline is a three-way structure, including a first channel, a second channel and a third channel that are interconnected;

[0009] The suction hole on the tank body is connected to the suction fan, the feed hole on the tank body is connected to the first channel in the suction pipeline, the suction valve and the first pressure sensor are arranged in the first channel of the suction pipeline, the second channel of the suction pipeline is connected to the flushing and blowing machine, the flushing and blowing valve and the second pressure sensor are installed in the second channel, the third channel is used to connect the suction medium, the suction fan, the flushing and blowing machine, the first pressure sensor, the second pressure sensor, the suction valve and the flushing and blowing valve are respectively connected to the controller, the cleaning system is connected to the second channel, and the cleaning system is used to clean the third channel.

[0010] Furthermore, the aforementioned anti-blocking system also includes a first timing module, and the shared device also includes a second timing module. The first timing module is located on the connection loop between the controller and the suction fan, and the second timing module is located on the connection loop between the controller and the blower.

[0011] Furthermore, the aforementioned cleaning system includes a water pump, a clean water tank, a nozzle and a common device;

[0012] The water inlet of the water pump is connected to the bottom of the clean water tank, the water outlet of the water pump is connected to the nozzle, the nozzle is installed in the second channel of the suction pipeline, and the water pump is connected to the controller.

[0013] Furthermore, the aforementioned cleaning system also includes a water pump valve, which is arranged between the water outlet of the water pump and the nozzle, and the water pump valve is connected to the controller.

[0014] A suction pipeline anti-blocking and cleaning control method includes the following steps:

[0015] In response to the "suction" switch being turned on, the flushing blower and the flushing valve are controlled to be closed, and the suction blower and the suction valve are controlled to be opened to start the suction operation;

[0016] In response to the negative pressure value P1 measured by the first pressure sensor being greater than P01, the suction fan and the suction valve are controlled to be closed, and the flushing blower and the flushing valve are controlled to be opened to perform pipe blocking treatment, where P01 is a preset first pressure threshold;

[0017] In response to the negative pressure value P2 measured by the second pressure sensor being less than P02, the flushing blower and the flushing valve are controlled to be closed, and the suction blower and the suction valve are controlled to be opened to resume normal suction operation, where P02 is a preset second pressure threshold;

[0018] In response to the opening of the "cleaning" switch, the blast blower, the water pump, the blast valve and the water pump valve are controlled to open, and the third channel is cleaned.

[0019] Further, the step of controlling the blast blower to open in response to the negative pressure value P1 measured by the first pressure sensor being greater than P01 includes:

[0020] After the second timing module is controlled to delay for a time T, the blast blower is opened, and during the time T, the blast valve starts to close at the same time as the suction valve starts to open, the time required for the blast valve to start to close to completely close is T, and the time required for the suction valve to start to open to completely open is also T.

[0021] Further, the step of controlling the suction blower to open in response to the negative pressure value P2 measured by the second pressure sensor being less than P02 includes:

[0022] After the first timing module is controlled to delay for a time T, the suction blower is opened, and during the time T, the blast valve starts to close at the same time as the suction valve starts to open, the time required for the blast valve to start to close to completely close is T, and the time required for the suction valve to start to open to completely open is also T.

[0023] Further, the step of controlling the blast blower to open in response to the opening of the "cleaning" switch includes:

[0024] After the second timing module is controlled to delay for a time T, the blast blower is opened, and T is the time required for the blast valve to start to close to completely open.

[0025] Further, P01 is the smaller of the maximum allowed pressure value of the suction blower and the maximum allowed pressure value in the suction pipeline, and P02 is the pressure value measured by the second pressure sensor when the suction blower and the suction valve are closed, the blast valve is opened, and the blast blower is normally blowing.

[0026] Further, the step of cleaning the third channel includes:

[0027] The water pump is controlled to pump water in the water tank to the nozzle.

[0028] The nozzle is controlled to work, spray water, and the blast blower is opened at the same time, and the third channel is cleaned.

[0029] A suction vehicle applying the suction pipeline anti-blocking and cleaning system of any one of the preceding.

[0030] A suction vehicle applying the suction pipeline anti-blocking and cleaning control method of any one of the preceding.

[0031] The present application has the following beneficial effects:

[0032] 1. During the suction process, it can automatically determine whether the pipe is blocked, detect the blockage in time and automatically clear it, eliminating the blockage of the suction pipe that causes the fan to suffocate, and effectively protect the motor.

[0033] 2. No need to manually judge whether the pipe is blocked, and automatic switching between suction and blocked pipe cleaning is fully realized.

[0034] 3. There is no need for manual operation to dredge the pipeline, which reduces labor intensity and improves suction efficiency.

[0035] 4. After the suction is completed, the pipeline is cleaned. Under the joint action of high-pressure wind and water, a water jet is formed to automatically clean the pipeline, saving water.

[0036] 5. When cleaning the pipeline, there is no need to disassemble the pipeline. It can be cleaned automatically, which reduces the labor intensity. The cleaning efficiency is improved by the combined cleaning of air and water. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the suction pipeline anti-blocking and cleaning system of the present invention;

[0038] Figure 2 This is the suction pipeline anti-blocking control logic diagram of the present invention;

[0039] Figure 3 This is the suction pipeline cleaning control logic diagram of the present invention.

[0040] The meanings of the reference numerals in the figure are: 11-tank body; 12-suction pipeline; 121-first channel; 122-second channel; 123-third channel; 13-suction fan; 14-flushing blower; 15-water pump; 16-clean water tank; 17-nozzle; 21-controller; 22-first pressure sensor; 23-suction valve; 24-flushing valve; 25-second pressure sensor; 26-water pump valve; 27-first timing module; 28-second timing module. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations on the technical solution of the present application. Unless there is a conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0042] Example 1

[0043] This embodiment discloses a system for preventing and cleaning the suction pipeline of a suction vehicle. The system structure diagram is shown in FIG. Figure 1As shown, the system is divided into a blockage prevention system and a cleaning system, wherein the blockage prevention system comprises a tank 11, a suction pipeline 12, a suction fan 13, a flushing fan 14, a controller 21, a first pressure sensor 22, a suction valve 23, a flushing valve 24, a first timing module 27; the cleaning system comprises a water pump 15, a clean water tank 16, a nozzle 17, a second pressure sensor 25, a water pump valve 26 and a second timing module 28.

[0044] The suction fan 13 is in communication with the air inlet hole on the tank 11, the suction pipeline 12 is a three-way structure, comprising a first channel 121, a second channel 122 and a third channel 123, the feed hole on the tank 11 is in communication with the first channel 121 in the suction pipeline 12, the suction valve 23 and the first pressure sensor 22 are installed in the first channel 121 of the suction pipeline 12; the second channel 122 is connected with the flushing fan 14, and the flushing valve 24 and the second pressure sensor 25 are installed in the second channel 122; the third channel 123 is used for the flow of the suction medium.

[0045] The water inlet of the water pump 15 is connected with the bottom position of the clean water tank 16, the water outlet of the water pump 15 is connected with the nozzle 17, the nozzle 17 is installed in the second channel 122 of the suction pipeline 12, located between the flushing valve 24 and the second pressure sensor 25. The water pump 15 can pump the water in the clean water tank 16 to the nozzle 17, and the water pump valve 26 is installed between the water outlet of the water pump 15 and the nozzle 17.

[0046] Because the suction valve 23 and the flushing valve 24 need time from opening to closing or from closing to opening, when the suction fan 13 and the flushing fan 14 are turned on, the time lag of the corresponding valve from fully opening to fully closing needs to be considered, so a timing module is installed at each fan, the time of the timing module is set according to the time required for the suction valve 23 and the flushing valve 24 to fully open or fully close, to ensure that the corresponding fan starts to work after the suction valve 23 and the flushing valve 24 are fully opened or closed. The first timing module 27 is connected on the control signal line of the suction fan 13, the second timing module 28 is connected on the control signal line of the flushing fan 14, and each fan, valve, pressure sensor and timing module is connected with the controller 21, which is controlled by the controller 21, such as Figure 1 As shown.

[0047] Example 2

[0048] Based on the above blockage prevention and cleaning system, the embodiment discloses a suction pipeline blockage prevention and cleaning control method:

[0049] During suction, turn on the "Suction" switch on the operation panel. At this time, the controller 21 automatically turns on the anti-blocking system, the blower 14 and the blower valve 24 are in the closed state, the suction fan 13 and the suction valve 23 are opened, the first pressure sensor 22, the second pressure sensor 25, the first timing module 27 and the second timing module 28 start working, and the suction port starts to suck the material.

[0050] The anti-blocking control logic diagram of the suction pipeline 12 is as follows Figure 2 As shown, when the suction pipeline 12 is blocked, the negative pressure value P1 measured by the first pressure sensor 22 in the pipeline suddenly increases. When the reading P1 of the first pressure sensor 22 is greater than the first pressure threshold value P01 set in the controller 21, the controller 21 issues an instruction to shut down the suction fan 13, stop the suction operation, and at the same time close the suction port valve 23, open the flushing valve 24, and turn on the flushing blower 14. When the suction valve 23 is closed, the flushing valve 24 is opened synchronously. Since it takes time T for the suction valve 23 to close completely from the beginning, and it also takes time T for the flushing valve 24 to open completely from the beginning, the controller 21 transmits the start signal of the flushing blower 14 to the second timing module 28, and the flushing blower 14 is started again after a lag time T under the action of the second timing module 28.

[0051] After the blower 14 is activated, it flushes and blows the suction line 12, clearing the third passage 123 of the suction line 12. Because the blockage is discovered promptly, the blower 14's air pressure does not need to be excessively high to easily dislodge the obstruction. During flushing and blowing, the nozzle of the third passage 123 must not be directed toward people or other objects. When the reading P2 of the second pressure sensor 25 at the blower 14 is less than the second pressure threshold P02 set in the controller 21, it indicates that the suction line 12 is properly cleared. The controller 21 turns off the blower 14, stops the blower operation, and at the same time closes the blower valve 24, opens the suction valve 23, and turns on the suction fan 13. When the blower valve 24 is closed, the suction valve 23 is opened synchronously. Since it takes time T for the blower valve 24 to close completely from the beginning, and it also takes time T for the suction valve 23 to open completely from the beginning, after the controller 21 transmits the suction fan 13 start signal to the first timing module 27, the suction fan 13 starts again after a delay of time T under the action of the first timing module 27 to perform normal suction operation.

[0052] The first pressure threshold P01 set in the controller 21 is the smaller value of the maximum pressure allowed by the suction fan 13 and the maximum pressure allowed in the suction pipeline 12; the second pressure threshold P02 can be obtained when the suction fan 13 and the suction valve 23 are closed, the flushing valve 24 is opened, and the flushing blower 14 is flushing normally under non-blocking conditions.

[0053] When the pipe is blocked again, the above operation is repeated automatically, without manual judgment of whether the pipe is blocked, and the automatic switching is fully realized, so that the blocking of the pipe can be found in time, the fan is prevented from being choked, and the motor is protected from damage.

[0054] After the suction is completed, the "suction" switch on the operation panel is turned off, the suction fan 13, the flushing fan 14, the suction valve 23 and the flushing valve 24 are all closed, the first pressure sensor 22, the second sensor 25, the first timing module 27 and the second timing module 28 stop working, and the suction is completed.

[0055] The cleaning control logic diagram of the suction pipeline 12 is shown in Figure 3 When the suction operation is completed, the "suction" switch on the operation panel is turned off. If the suction pipeline 12 needs to be cleaned after the suction is completed, the "cleaning" switch on the operation panel is turned on, the flushing valve 24 and the water pump valve 26 are opened, and the flushing fan 14 and the water pump 15 start working. Since the flushing valve 24 needs a time interval T from the start to the complete opening, the flushing fan 14 starts working after the time interval T under the action of the second timing module 28.

[0056] The water pump 15 pumps water to the nozzle 17, which is uniformly sprayed out. Under the action of the flushing fan 14, the wind and the water form a water jet, which flushes out the dirt in the third passage 123 of the suction pipeline 12. When clean water flows out of the outlet of the third passage 123 of the suction pipeline 12, it indicates that the surface of the suction pipeline 12 has been cleaned. The "cleaning" switch on the operation panel is turned off, the water pump 15 and the flushing fan 14 stop working, the flushing valve 24 and the water pump valve 26 are closed, and the second timing module 28 stops working. The cleaning of the suction pipeline 12 is completed. The suction pipeline 12 can be automatically cleaned without disassembly, the manual strength is reduced, and the cleaning efficiency is improved under the combined cleaning of the wind and the water.

[0057] Embodiment 3

[0058] The embodiment discloses a suction vehicle applying the foregoing anti-blocking and cleaning system and control method. In the suction process, whether the pipe is blocked can be automatically judged, the pipe is automatically dredged and cleaned in time, the blocking of the suction pipeline is prevented from causing the fan to be choked, the motor is effectively protected, manual judgment of whether the pipe is blocked is not needed, automatic switching of the suction and the cleaning of the blocked pipe is fully realized, manual operation is not needed for the dredging of the pipeline, the manual strength is reduced, the suction efficiency is improved, the pipeline is cleaned after the suction is completed, the water jet is formed under the combined action of the high-pressure wind and the water to automatically clean the pipeline, the water consumption is saved, the pipeline can be automatically cleaned without disassembly during the cleaning of the pipeline, the manual strength is reduced, and the cleaning efficiency is improved under the combined cleaning of the wind and the water.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A suction pipeline anti-blocking and cleaning system, characterized in that: Including anti-blocking system and cleaning system, The anti-blocking system includes a tank body (11), a suction pipeline (12), a suction fan (13), a first pressure sensor (22), a suction valve (23), a second pressure sensor (25), and a common device, wherein the common device is a device shared by the anti-blocking system and the cleaning system, and includes a flushing blower (14), a flushing valve (24), and a controller (21); The suction pipeline (12) is a three-way structure, comprising a first channel (121), a second channel (122), and a third channel (123) that are interconnected; The air suction hole on the tank body (11) is communicated with the suction fan (13), the feed hole on the tank body (11) is communicated with the first channel (121) in the suction pipeline (12), the suction valve (23) and the first pressure sensor (22) are arranged in the first channel (121) of the suction pipeline (12), the second channel (122) of the suction pipeline (12) is connected to the blower (14), the blower valve (24) and the second pressure sensor (25) are installed in the second channel (122), the third channel (123) is used to communicate with the suction medium, the suction fan (13), the blower (14), the first pressure sensor (22), the second pressure sensor (25), the suction valve (23) and the blower valve (24) are respectively connected to the controller (21), the cleaning system is connected to the second channel (122), and the cleaning system is used to clean the third channel (123).

2. A suction pipeline anti-blocking and cleaning system according to claim 1, characterized in that: The anti-blocking system further includes a first timing module (27), and the shared device further includes a second timing module (28). The first timing module (27) is located on a connection circuit between the controller (21) and the suction fan (13), and the second timing module (28) is located on a connection circuit between the controller (21) and the blower (14).

3. A suction pipeline anti-blocking and cleaning system according to claim 2, characterized in that: The cleaning system includes a water pump (15), a clean water tank (16), a nozzle (17) and a common device; The water inlet of the water pump (15) is connected to the bottom of the clean water tank (16), the water outlet of the water pump (15) is connected to the nozzle (17), the nozzle (17) is installed in the second channel (122) of the suction pipeline (12), and the water pump (15) is connected to the controller (21).

4. A suction pipeline anti-blocking and cleaning system according to claim 3, characterized in that: The cleaning system further comprises a water pump valve (26), wherein the water pump valve (26) is arranged between the water outlet of the water pump (15) and the nozzle (17), and the water pump valve (26) is connected to the controller (21).

5. The control method of the suction pipeline anti-blocking and cleaning system according to any one of claims 1 to 4, characterized in that: The steps include: In response to the "suction" switch being turned on, the blower (14) and the blower valve (24) are controlled to be closed, and the suction fan (13) and the suction valve (23) are controlled to be opened to start the suction operation; In response to the negative pressure value P1 measured by the first pressure sensor (22) being greater than P01, the suction fan (13) and the suction valve (23) are controlled to be closed, and the flushing blower (14) and the flushing valve (24) are controlled to be opened to perform pipe blocking processing, wherein P01 is a preset first pressure threshold; In response to the negative pressure value P2 measured by the second pressure sensor (25) being less than P02, the flushing blower (14) and the flushing valve (24) are controlled to be closed, and the suction blower (13) and the suction valve (23) are controlled to be opened, so as to resume normal suction operation, wherein P02 is a preset second pressure threshold; In response to the "cleaning" switch being turned on, the blower (14), the water pump (15), the blower valve (24) and the water pump valve (26) are controlled to be turned on to flush the third channel (123).

6. The control method according to claim 5, characterized in that: The step of controlling the blower (14) to turn on in response to the negative pressure value P1 measured by the first pressure sensor (22) being greater than P01 comprises: After controlling the second timing module (28) to delay the time T, the blower (14) is turned on. During the time T, the suction valve (23) starts to close and the blower valve (24) starts to open simultaneously. The time required for the suction valve (23) to be completely closed is T, and the time required for the blower valve (24) to be completely opened is also T.

7. The control method according to claim 5, characterized in that: The step of controlling the suction fan (13) to turn on in response to the negative pressure value P2 measured by the second pressure sensor (25) being less than P02 comprises: After controlling the first timing module (27) to delay for a time T, the suction fan (13) is turned on. During the time T, the flushing valve (24) starts to close and the suction valve (23) starts to open simultaneously. The time required for the flushing valve (24) to be completely closed from the start is T, and the time required for the suction valve (23) to be completely opened from the start is also T.

8. The control method according to claim 5, characterized in that: The step of controlling the blower (14) to turn on in response to the "wash" switch being turned on comprises: After controlling the second timing module (28) to delay the time T, the blower (14) is turned on, wherein T is the time required for the blower valve (24) to fully open from a closed state.

9. The control method according to claim 5, characterized in that: The P01 is the smaller value between the maximum pressure hold-in value allowed by the suction fan (13) and the maximum pressure value allowed in the suction pipeline (12); the P02 is the pressure value measured by the second pressure sensor (25) when the suction fan (13) and the suction valve (23) are closed, the flushing valve (24) is open, and the flushing blower (14) is flushing normally under non-blocked pipe conditions.

10. The control method according to claim 5, characterized in that: The step of flushing the third channel (123) includes: Controlling the water pump (15) to pump water from the clean water tank (16) to the nozzle (17); The nozzle (17) is controlled to work, spraying clean water, and the blower (14) is simultaneously turned on to flush the third channel (123).

11. A suction vehicle, characterized in that: A suction pipeline anti-blocking and cleaning system according to any one of claims 1 to 4 is used.

12. A suction vehicle, characterized in that: Apply the suction pipeline anti-blocking and cleaning control method described in any one of claims 5 to 10.

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