Pipeline cleaning system

Abstract

The utility model discloses a pipeline cleaning system, and relates to the technical field of electrotherapy equipment. Comprising a negative pressure adsorption bowl (1), a water vapor separation box (4) with an inlet connected with the negative pressure adsorption bowl (1), a negative pressure pump (8) communicated with an air outlet of the water vapor separation box (4), an electromagnetic valve water valve (5) communicated with a liquid outlet of the water vapor separation box (4), a liquid discharging unit and a cleaning unit, wherein the liquid discharging unit and the cleaning unit are both communicated with a liquid outlet of the electromagnetic valve water valve (5). A liquid outlet of the cleaning unit is connected with an inlet of the water vapor separation box (4); the pressure difference sensor is used for detecting the water pressure difference of the two ends of the electromagnetic valve water valve (5), and the control device is used for controlling the cleaning unit to be opened and the liquid discharging unit to be closed when the water pressure difference of the two ends of the electromagnetic valve water valve (5) is smaller than a set value. The pipeline cleaning system can clean a pipeline and a solenoid valve water valve, prevents the pipeline and the valve body from being blocked, and ensures normal use of the negative pressure adsorption function of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of electrotherapy equipment, in particular to a pipeline cleaning system. Background Art

[0002] Devices with adsorption functions, especially electrotherapy devices, use a dampened sponge as a coupling when applied to the skin surface. During treatment, dirt and sweat on the skin surface enter the water vapor separation device through the water vapor pipe. The separated liquid is then discharged into the waste liquid box through the opening and closing of the valve body for final harmless disposal. Because the water vapor separation device contains a large amount of liquid contaminants, some of the liquid flowing through the valve body will be loaded on the valve body switch. Over time, this can cause the valve body to clog, resulting in equipment failures such as abnormal negative pressure adsorption function, affecting the normal use of the equipment and affecting the patient's recovery.

[0003] In the existing technology, the pipeline is cleaned by a negative pressure adsorption cleaning system, please refer to Figure 1 , Figure 1 The schematic diagram of a typical negative pressure adsorption cleaning system in the prior art illustrates the following cleaning process: The system activates the pressure differential sensor 1010 in the negative pressure adsorption system, triggering a power-on self-test sequence. The system then checks the pressure of each negative pressure pipeline one by one. If the pressure exceeds a preset threshold, the system determines that the corresponding pipeline is clogged and promptly issues a prompt signal indicating the need for pipeline cleaning. The electrotherapy device's negative pressure adsorption bowl 102 is placed in disinfectant from the disinfectant container 101. The pump is activated, and the corresponding channel air valve 106 is opened. Under the action of the negative pressure adsorption force, the disinfectant enters the electrode line 103 and the negative pressure pipeline 104 through the negative pressure adsorption bowl 102. As the liquid in the negative pressure pipeline 104 enters the water vapor separation tank 105, when the liquid level sensor 109 detects that the liquid level in the water vapor separation tank 105 has reached a high level, the sensor outputs a signal to the controller, which automatically shuts off the pump 107 and opens the drain valve 108 to drain the liquid. The remaining negative pressure pipelines 104 are then cleaned one by one.

[0004] The negative pressure adsorption cleaning system can only clean the attachments on the pipe wall in the pipeline, and it is a one-time cleaning. The drainage position includes Figure 1 It is difficult to clean the upper and lower positions of the water vapor separation tank 109 to the water valve 108. The probability of pipeline blockage in actual use is very small. Most of the time, it is the water valve solenoid valve that is stuck or not sealed tightly due to contaminants. Therefore, the focus of cleaning should be the solenoid valve, but the existing negative pressure adsorption cleaning system cannot clean the water valve solenoid valve, which can easily cause solenoid valve blockage, resulting in abnormal negative pressure adsorption function of the equipment and other equipment failures, affecting the normal use of the equipment function and affecting the patient's rehabilitation treatment.

[0005] In summary, how to effectively solve the problem that the existing negative pressure adsorption cleaning system cannot clean the water valve solenoid valve is an issue that technicians in this field urgently need to solve. Utility Model Content

[0006] The purpose of the utility model is to provide a pipeline cleaning system, which can clean the pipeline and the solenoid valve water valve to prevent the pipeline and valve body from being blocked, ensure the normal use of the negative pressure adsorption function of the equipment, and improve the quality of patient rehabilitation treatment.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A pipeline cleaning system includes a negative pressure adsorption bowl, a water vapor separation box whose inlet is connected to the negative pressure adsorption bowl, a negative pressure pump connected to the air outlet of the water vapor separation box, a solenoid valve water valve connected to the liquid outlet of the water vapor separation box, a drainage unit and a cleaning unit connected to the liquid outlet of the solenoid valve water valve, the liquid outlet of the cleaning unit is connected to the inlet of the water vapor separation box; it also includes a pressure differential sensor for detecting the water pressure difference at both ends of the solenoid valve water valve, and a control device for controlling the cleaning unit to open and the drainage unit to close when the water pressure difference at both ends of the solenoid valve water valve is less than a set value.

[0009] Optionally, the cleaning unit includes:

[0010] A cleaning branch connected to the liquid outlet of the solenoid valve water valve;

[0011] A water pump connected to the other end of the cleaning branch is connected to the control device. When the water pressure difference between the two ends of the solenoid valve is less than a set value, the control device controls the water pump to open.

[0012] Optionally, the drainage unit includes:

[0013] A liquid discharge branch connected to the liquid outlet of the solenoid valve water valve;

[0014] The waste liquid box is connected to the other end of the drainage branch, and when the water pressure difference at both ends of the solenoid valve water valve is greater than or equal to the set value, the control device controls the water pump to close.

[0015] Optionally, the cleaning branch and the drainage branch are connected to the drainage main line through a tee, and the other end of the drainage main line is connected to the liquid outlet of the solenoid valve water valve. A one-way valve is provided on the drainage branch, and the flow direction of the one-way valve is from the solenoid valve water valve to the drainage unit.

[0016] Optionally, the control device includes:

[0017] A number control mechanism connected to the pressure differential sensor and used to control the water pump to circulate and clean the cleaning unit n times when the pressure differential sensor detects that the water pressure difference at both ends of the solenoid valve is less than a first set value, and to control the water pump to circulate and clean the cleaning unit m times when the pressure differential sensor detects that the water pressure difference at both ends of the solenoid valve is less than a second set value, wherein the first set value is greater than the second set value, and n is less than m.

[0018] Optionally, the control device includes:

[0019] An opening and closing control mechanism connected to the pressure differential sensor, which controls the solenoid valve to open and close at a first opening and closing frequency when the pressure differential sensor detects that the water pressure difference at both ends of the solenoid valve is less than a first set value, and controls the solenoid valve to open and close at a second opening and closing frequency when the pressure differential sensor detects that the water pressure difference at both ends of the solenoid valve is less than a second set value, wherein the first set value is greater than the second set value, and the first opening and closing frequency is less than the second opening and closing frequency.

[0020] Optionally, the control device includes:

[0021] A time control mechanism is connected to the pressure difference sensor, and when the pressure difference sensor detects that the water pressure difference at both ends of the solenoid valve water valve is less than a first set value, controls the negative pressure pump to operate at the maximum flow rate for a first time; when the pressure difference sensor detects that the water pressure difference at both ends of the solenoid valve water valve is less than a second set value, controls the negative pressure pump to operate at rated power for a second time, wherein the first set value is greater than the second set value, and the first time is less than the second time.

[0022] Optionally, the control device includes:

[0023] a liquid level sensor for detecting the height of the liquid in the water vapor separation box;

[0024] A protection control mechanism connected to the liquid level sensor controls the negative pressure pump to stop working when the current liquid level of the water vapor separation box is greater than the limit liquid level.

[0025] Optionally, the control device includes:

[0026] When the water pressure difference at both ends of the solenoid valve water valve is less than the set value or the current liquid height of the water vapor separation box is greater than the limit liquid level height, an alarm mechanism will issue an alarm prompt.

[0027] Optionally, the exhaust port of the negative pressure pump is provided with a muffler.

[0028] The pipeline cleaning system provided by the present invention, when adsorption electrotherapy is used, the liquid of the solenoid valve water valve flows into the drainage unit; the solenoid valve is cleaned, and the liquid of the solenoid valve water valve flows into the drainage unit, and the liquid outlet of the cleaning unit and the inlet of the water vapor separation box flow back from the cleaning unit to the water vapor separation box through the circulating water outlet pipeline 14, and the liquid is reused.

[0029] A differential pressure sensor is connected in parallel between the liquid inlet and the liquid outlet of the solenoid valve water valve. The differential pressure sensor detects the water pressure difference at both ends of the solenoid valve water valve. When the water pressure difference at both ends of the solenoid valve water valve is less than the set value, the cleaning unit is controlled to open and the drainage unit is closed. The cleaning unit provides power, the channel of the cleaning control valve is opened, the drainage pipe is closed, and the liquid enters the cleaning unit from the solenoid valve water valve, and then circulates into the water vapor separation box to clean the control valve and its pipes.

[0030] The pipeline cleaning system provided by the utility model forms a cleaning circulation pipeline with cleaning liquid in the water vapor separation box, the solenoid valve water valve and the cleaning unit, which can not only clean the pipeline, but also clean the water valve, and the cleaning is more comprehensive; the water flow rate of the cleaning liquid is increased by the cleaning unit to flush the pipeline and the solenoid valve water valve, thereby improving the cleaning force of the pipeline and the water valve, and cleaning the pipeline and the water valve more thoroughly, preventing the pipeline and the valve body from being blocked, ensuring the normal use of the negative pressure adsorption function of the equipment, and improving the quality of patient rehabilitation treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 Schematic diagram of a typical pipeline cleaning system in the prior art;

[0033] Figure 2 A schematic diagram of a pipeline cleaning system provided in a specific embodiment of the present invention;

[0034] Figure 3 This is a flowchart of a control method for a pipeline cleaning system provided in a specific embodiment of the present invention.

[0035] Reference numerals:

[0036] Negative pressure adsorption bowl 1, adsorption electrode line 2, adsorption electrode line interface 3, water vapor separation box 4, solenoid valve water valve 5, water pump 6, waste liquid box 7, negative pressure pump 8, silencer box 9, one-way valve 10, negative pressure pipeline 11, inlet pipe 12, drain pipe 13, circulating water outlet pipeline 14. DETAILED DESCRIPTION

[0037] The core of this utility model is to provide a pipeline cleaning system, which can clean the pipeline and solenoid valve water valve to prevent the pipeline and valve body from being blocked, ensure the normal use of the negative pressure adsorption function of the equipment, and improve the quality of patient rehabilitation treatment.

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Please refer to Figure 2 and Figure 3 , Figure 2 A schematic diagram of a pipeline cleaning system provided in a specific embodiment of the present invention; Figure 3 This is a flowchart of a control method for a pipeline cleaning system provided in a specific embodiment of the present invention.

[0040] In a specific embodiment, the pipeline cleaning system provided by the utility model includes a negative pressure adsorption bowl 1, a water vapor separation box 4 whose inlet is connected to the negative pressure adsorption bowl 1, a negative pressure pump 8 connected to the air outlet of the water vapor separation box 4, a solenoid valve water valve 5 connected to the liquid outlet of the water vapor separation box 4, a drainage unit and a cleaning unit connected to the liquid outlet of the solenoid valve water valve 5, and the liquid outlet of the cleaning unit is connected to the inlet of the water vapor separation box 4; it also includes a pressure differential sensor for detecting the water pressure difference at both ends of the solenoid valve water valve 5, and a control device for controlling the cleaning unit to open and the drainage unit to close when the water pressure difference at both ends of the solenoid valve water valve 5 is less than a set value.

[0041] In the above structure, the pipeline cleaning system includes a negative pressure adsorption bowl 1, a water vapor separation box 4, a negative pressure pump 8, a solenoid valve 5, a drainage unit, a cleaning unit and a control device.

[0042] The adsorption electrode line 2 of the negative pressure adsorption bowl 1 is connected to the inlet pipe 12 via the adsorption electrode line interface 3. The other end of the inlet pipe 12 is connected to the inlet of the water vapor separation box 4. The air outlet of the water vapor separation box 4 is connected to the negative pressure pump 8 via the negative pressure pipe 11. The negative pressure pump 8 is a vacuum pump that provides power for the pipeline cleaning system. During cleaning, the negative pressure adsorption bowl 1 is placed in a disinfectant container. Under the action of negative pressure adsorption force, the cleaning liquid enters the adsorption electrode line interface 3 and the inlet pipe 12 from the negative pressure adsorption bowl 1, and then enters the water vapor separation box 4. The water vapor separation box 4 separates the cleaning liquid into gas and liquid, and the gas is discharged from the exhaust port of the negative pressure pump 8. The inlet of the solenoid valve water valve 5 is connected with the liquid outlet of the water vapor separation box 4, and the liquid separated by the water vapor separation box 4 enters the solenoid valve water valve 5. The drainage unit and the cleaning unit are both connected with the liquid outlet of the solenoid valve water valve 5. When adsorption electrotherapy is used, the liquid of the solenoid valve water valve 5 flows into the drainage unit; the solenoid valve is cleaned, and the liquid of the solenoid valve water valve 5 flows into the drainage unit. The liquid outlet of the cleaning unit and the inlet of the water vapor separation box 4 flow back from the cleaning unit to the water vapor separation box 4 through the circulating outlet pipeline 14, and the liquid is reused.

[0043] A differential pressure sensor is connected in parallel between the liquid inlet and liquid outlet of the solenoid valve 5. The differential pressure sensor detects the water pressure difference across the solenoid valve 5. The control device is connected to the differential pressure sensor, the drainage unit, and the cleaning unit. The differential pressure sensor sends the detected water pressure difference across the solenoid valve 5 to the control device. The control device compares the current water pressure difference across the solenoid valve 5 with the set value. When the water pressure difference across the solenoid valve 5 is less than the set value, the cleaning unit is controlled to open and the drainage unit is closed. The cleaning unit provides power, opens the channel for cleaning the control valve, closes the drainage pipeline, and the liquid enters the cleaning unit from the solenoid valve 5. Then, it circulates into the water vapor separation box 4 to clean the control valve and its pipeline. When cleaning the control valve, the liquid flow path is: negative pressure adsorption bowl 1 → adsorption electrode line 2 → adsorption electrode line interface 3 → inlet pipe 12 → water vapor separation box 4 → drain pipe 13 → solenoid valve 5 → cleaning unit → circulating water outlet pipe 14 → water vapor separation box 4 → drain pipe 13 → solenoid valve 5 → cleaning unit → circulating water outlet pipe 14 → water vapor separation box 4. After cleaning, the water is discharged from the water vapor separation box 4 → drain pipe 13 → solenoid valve 5 → drain unit.

[0044] When the water pressure difference across the solenoid valve 5 is greater than or equal to the set value, the cleaning unit is controlled to close and the drainage unit is opened. That is, the cleaning control valve channel is closed, the drainage pipe is opened, and adsorption electrotherapy is in use. The liquid flow path during adsorption electrotherapy is: negative pressure adsorption bowl 11 → adsorption electrode line 2 → adsorption electrode line interface 3 → inlet pipe 12 → water vapor separation box 4 → drain pipe 13 → solenoid valve 5 → drainage unit.

[0045] The pipeline cleaning system provided by the present invention forms a cleaning circulation pipeline with cleaning liquid in the water vapor separation box 4, the solenoid valve water valve 5 and the cleaning unit, which can not only clean the pipeline, but also clean the water valve, and the cleaning is more comprehensive; the water flow rate of the cleaning liquid is increased by the cleaning unit to flush the pipeline and the solenoid valve water valve 5, thereby improving the cleaning force of the pipeline and the water valve, and cleaning the pipeline and the water valve more thoroughly, preventing the pipeline and the valve body from being blocked, ensuring the normal use of the negative pressure adsorption function of the equipment, and improving the quality of patient rehabilitation treatment.

[0046] Based on the above embodiments, the cleaning unit includes:

[0047] A cleaning branch connected to the liquid outlet of the solenoid valve water valve 5;

[0048] The water pump 6 is connected to the other end of the cleaning branch, and the water pump 6 is connected to the control device. When the water pressure difference at both ends of the solenoid valve 5 is less than the set value, the control device controls the water pump 6 to open.

[0049] In a specific embodiment, the cleaning unit includes a cleaning branch and a water pump 6. The cleaning branch is connected to the liquid outlet of the solenoid valve water valve 5, the water pump 6 is connected to the other end of the cleaning branch, the other end of the water pump 6 is connected to the circulating water outlet pipe 14, and the other end of the circulating water outlet pipe 14 is connected to the inlet of the water vapor separation box 4. The water pump 6 provides power to enable the liquid of the solenoid valve water valve 5 to enter the cleaning branch through the cleaning branch, and then flow into the water pump 6 through the cleaning branch, and then flow from the water pump 6 through the circulating water outlet pipe 14 into the water vapor separation box 4 to realize the circulation of the cleaning liquid.

[0050] The water pump 6 is connected to the control device. When the water pressure difference at both ends of the solenoid valve water valve 5 is less than the set value, the solenoid valve water valve 5 is blocked beyond the normal opening range. The control device controls the water pump 6 to open and automatically clean the pipeline and water valve.

[0051] Based on the above embodiments, the liquid discharge unit includes:

[0052] A drainage branch connected to the liquid outlet of the solenoid valve water valve 5;

[0053] The waste liquid box 7 is connected to the other end of the drainage branch. When the water pressure difference at both ends of the solenoid valve water valve 5 is greater than or equal to the set value, the control device controls the water pump 6 to close.

[0054] In a specific embodiment, the drainage unit includes a drainage branch and a waste liquid box 7. The drainage branch is connected to the liquid outlet of the solenoid valve water valve 5, and the waste liquid box 7 is connected to the other end of the drainage branch. When the water pressure difference across the solenoid valve water valve 5 is greater than or equal to a set value, the pipeline and the water valve are unobstructed, the control device controls the water pump 6 to close, and the waste liquid and cleaning liquid of the electrotherapy can flow into the waste liquid box 7 through the drainage branch. That is, when the water pressure difference across the solenoid valve water valve 5 is greater than or equal to the set value, the water pump 6 is closed, the solenoid valve water valve 5 is connected to the drainage branch and the waste liquid box 7, and the waste water can be discharged. When the water pressure difference across the solenoid valve water valve 5 is less than the set value, the water pump 6 is opened, the solenoid valve water valve 5 is connected to the water pump 6, and the electrotherapy cannot be performed, which has a protective effect on the pipeline cleaning system and ensures the electrotherapy effect.

[0055] Based on the above embodiments, the cleaning branch and the drainage branch are connected to the drainage main line through a tee, and the other end of the drainage main line is connected to the liquid outlet of the solenoid valve water valve 5. A one-way valve 10 is provided on the drainage branch, and the flow direction of the one-way valve 10 is from the solenoid valve water valve 5 to the drainage unit.

[0056] In a specific embodiment, the cleaning branch and the drainage branch are connected to the drainage main line through a tee, and the drainage main line is shared between the tee and the solenoid valve water valve 5. The flow is diverted after the tee, reducing the number of interfaces of the solenoid valve water valve 5 and simplifying the pipeline.

[0057] A one-way valve 10 is provided on the drainage branch. The flow direction of the one-way valve 10 is from the solenoid valve water valve 5 to the drainage unit, that is, only the liquid drainage branch 10 is allowed to flow → the waste liquid box 7, and the waste liquid box 7 → the drainage branch 10 is not allowed, so as to prevent the liquid from flowing back from the waste liquid box 7 to the water pump 6 under the power of the water pump 6.

[0058] Based on the above embodiments, the control device includes:

[0059] A number control mechanism connected to the pressure differential sensor, used to control the water pump 6 to circulate and clean the cleaning unit n times when the pressure differential sensor detects that the water pressure difference at both ends of the solenoid valve water valve 5 is less than a first set value, and to control the water pump 6 to circulate and clean the cleaning unit m times when the pressure differential sensor detects that the water pressure difference at both ends of the solenoid valve water valve 5 is less than a second set value, wherein the first set value is greater than the second set value, and n is less than m.

[0060] In actual application, the frequency control mechanism is connected to a pressure differential sensor. The pressure differential sensor transmits the water pressure differential across the solenoid valve 5 to the frequency control mechanism. The frequency control mechanism compares the water pressure differential across the solenoid valve 5 with a first set value and a second set value. When the pressure differential sensor detects that the water pressure differential across the solenoid valve 5 is less than the first set value, the water pump 6 is controlled to cycle through the cleaning unit for n times. When the pressure differential sensor detects that the water pressure differential across the solenoid valve 5 is less than the second set value, the water pump 6 is controlled to cycle through the cleaning unit for m times. The first set value is greater than the second set value, and n is less than m. In other words, a smaller water pressure differential across the solenoid valve 5 indicates better pipeline patency, fewer cleaning cycles, and shorter cleaning time. Conversely, a larger water pressure differential across the solenoid valve 5 indicates poor pipeline patency, more cleaning cycles, and longer cleaning time. The cleaning purpose is achieved by increasing the cleaning time. It should be noted that the operating time of the water pump 6 can be customized by the user, such as 2 minutes, 3 minutes, etc. The operating time of the water pump 6 is the cleaning time.

[0061] Based on the above embodiments, the control device includes:

[0062] An opening and closing control mechanism connected to a pressure differential sensor, which controls the solenoid valve 5 to open and close at a first opening and closing frequency when the pressure differential sensor detects that the water pressure difference at both ends of the solenoid valve 5 is less than a first set value, and controls the solenoid valve 5 to open and close at a second opening and closing frequency when the pressure differential sensor detects that the water pressure difference at both ends of the solenoid valve 5 is less than a second set value, wherein the first set value is greater than the second set value, and the first opening and closing frequency is less than the second opening and closing frequency.

[0063] In the above embodiment, a greater pressure difference across the solenoid valve 5 indicates poor pipeline patency and a greater frequency of opening and closing of the solenoid valve 5. Conversely, a lower frequency of opening and closing of the solenoid valve 5 indicates a lower frequency of opening and closing. By controlling the opening and closing of the solenoid valve 5, the solenoid valve 5 is cleaned, fundamentally resolving the issues of pipeline contamination and stuck or loose seals encountered in actual use.

[0064] Based on the above embodiments, the control device includes:

[0065] A time control mechanism connected to the pressure differential sensor, which controls the negative pressure pump 8 to operate at the maximum flow rate for the first time when the pressure differential sensor detects that the water pressure difference at both ends of the solenoid valve water valve 5 is less than the first set value; and controls the negative pressure pump 8 to operate at the rated power for the second time when the pressure differential sensor detects that the water pressure difference at both ends of the solenoid valve water valve 5 is less than the second set value. The first set value is greater than the second set value, and the first time is less than the second time.

[0066] In the above embodiment, the greater the water pressure difference between the two ends of the solenoid valve water valve 5, the worse the pipeline patency, the longer the negative pressure pump 8 works at the maximum flow rate, the more cleaning liquid in the water vapor separation box 4, and the more thorough the cleaning.

[0067] It should be noted that the negative pressure pump 8 is a vacuum pump, and its on time can be set, which is specifically calculated based on the maximum flow rate of the vacuum pump and the volume of the water vapor separation box 4. The user does not need to strictly control the amount of cleaning liquid used. The vacuum pump can accurately control the amount of liquid entering, thereby preventing the water vapor separation box 4 from being full and causing water to enter the air pump.

[0068] Based on the above embodiments, the control device includes:

[0069] A liquid level sensor for detecting the liquid height in the water vapor separation box 4;

[0070] A protection control mechanism connected to the liquid level sensor, which controls the negative pressure pump 8 to stop working when the current liquid level in the water vapor separation box 4 is greater than the limit liquid level.

[0071] In practice, a liquid level sensor is installed in the moisture separator 4 to detect the liquid level in the separator 4. The protection control mechanism receives the liquid level detected by the liquid level sensor and compares it with the limit liquid level. When the current liquid level in the separator 4 exceeds the limit liquid level, indicating that the liquid level is too high and has reached the limit, the negative pressure pump 8 is controlled to stop operation, and the cleaning liquid stops entering the separator 4. The protection control mechanism and the negative pressure pump 8 dually control the liquid level in the separator 4 to prevent the separator 4 from filling up and causing water to enter the air pump.

[0072] Based on the above embodiments, the control device includes:

[0073] When the water pressure difference at both ends of the solenoid valve water valve 5 is less than the set value or the current liquid height of the water vapor separation box 4 is greater than the limit liquid level height, an alarm mechanism will issue an alarm prompt.

[0074] In actual application, the alarm mechanism is connected to the pressure difference sensor and the liquid level sensor. When the water pressure difference at both ends of the solenoid valve water valve 5 is less than the set value or the current liquid height of the water vapor separation box 4 is greater than the limit liquid level height, the alarm mechanism will issue an alarm prompt to remind the user to check the blockage of the pipeline and water valve and the water level in the water vapor separation box 4 in time, eliminate the problem in time, and ensure the normal operation of the pipeline cleaning system.

[0075] On the basis of the above embodiments, the exhaust port of the negative pressure pump 8 is provided with a muffler to reduce noise pollution, provide a comfortable working environment and ensure smooth exhaust.

[0076] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0077] The above is a detailed introduction to the pipeline cleaning system provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A pipeline cleaning system, characterized in that: The invention comprises a negative pressure adsorption bowl (1), a water vapor separation box (4) whose inlet is connected to the negative pressure adsorption bowl (1), a negative pressure pump (8) connected to the air outlet of the water vapor separation box (4), a solenoid valve (5) connected to the liquid outlet of the water vapor separation box (4), a liquid discharge unit and a cleaning unit both connected to the liquid outlet of the solenoid valve (5), wherein the liquid outlet of the cleaning unit is connected to the inlet of the water vapor separation box (4); a pressure difference sensor for detecting the water pressure difference at both ends of the solenoid valve (5), and a control device for controlling the cleaning unit to open and the liquid discharge unit to close when the water pressure difference at both ends of the solenoid valve (5) is less than a set value, wherein the cleaning unit comprises: A cleaning branch connected to the liquid outlet of the solenoid valve water valve (5); A water pump (6) is connected to the other end of the cleaning branch, and the water pump (6) is connected to the control device. When the water pressure difference between the two ends of the solenoid valve (5) is less than a set value, the control device controls the water pump (6) to open.

2. The pipeline cleaning system according to claim 1, characterized in that: The drainage unit comprises: A liquid discharge branch connected to the liquid outlet of the solenoid valve water valve (5); A waste liquid box (7) connected to the other end of the drainage branch, when the water pressure difference between the two ends of the solenoid valve water valve (5) is greater than or equal to a set value, the control device controls the water pump (6) to close.

3. The pipeline cleaning system according to claim 2, characterized in that: The cleaning branch and the drainage branch are connected to the drainage main line through a tee, and the other end of the drainage main line is connected to the liquid outlet of the solenoid valve water valve (5). A one-way valve (10) is provided on the drainage branch, and the flow direction of the one-way valve (10) is from the solenoid valve water valve (5) to the drainage unit.

4. The pipeline cleaning system according to claim 3, characterized in that: The control device comprises: A number control mechanism connected to the pressure difference sensor and used for controlling the water pump (6) to circulate and clean the cleaning unit n times when the pressure difference sensor detects that the water pressure difference at both ends of the solenoid valve water valve (5) is less than a first set value, and for controlling the water pump (6) to circulate and clean the cleaning unit m times when the pressure difference sensor detects that the water pressure difference at both ends of the solenoid valve water valve (5) is less than a second set value, wherein the first set value is greater than the second set value and n is less than m.

5. The pipeline cleaning system according to claim 3, characterized in that: The control device comprises: An opening and closing control mechanism connected to the pressure difference sensor, controlling the solenoid valve (5) to open and close at a first opening and closing frequency when the pressure difference sensor detects that the water pressure difference at both ends of the solenoid valve (5) is less than a first set value, and controlling the solenoid valve (5) to open and close at a second opening and closing frequency when the pressure difference sensor detects that the water pressure difference at both ends of the solenoid valve (5) is less than a second set value, wherein the first set value is greater than the second set value, and the first opening and closing frequency is less than the second opening and closing frequency.

6. The pipeline cleaning system according to claim 3, characterized in that: The control device comprises: A time control mechanism connected to the pressure difference sensor, which controls the negative pressure pump (8) to operate at a maximum flow rate for a first time when the pressure difference sensor detects that the water pressure difference at both ends of the solenoid valve water valve (5) is less than a first set value, and controls the negative pressure pump (8) to operate at a rated power for a second time when the pressure difference sensor detects that the water pressure difference at both ends of the solenoid valve water valve (5) is less than a second set value, wherein the first set value is greater than the second set value and the first time is less than the second time.

7. The pipeline cleaning system according to claim 6, characterized in that: The control device comprises: A liquid level sensor for detecting the height of the liquid in the water vapor separation box (4); A protection control mechanism connected to the liquid level sensor, for controlling the negative pressure pump (8) to stop working when the current liquid height of the water vapor separation box (4) is greater than the limit liquid level.

8. The pipeline cleaning system according to claim 7, characterized in that: The control device comprises: An alarm mechanism that issues an alarm when the water pressure difference at both ends of the solenoid valve water valve (5) is less than a set value or the current liquid height of the water vapor separation box (4) is greater than the limit liquid level.

9. The pipeline cleaning system according to any one of claims 1 to 8, characterized in that: The exhaust port of the negative pressure pump (8) is provided with a muffler.

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