A multi-stage voltage-changing pulse cleaning device

Abstract

The present application provides a multi-stage variable pressure pulse cleaning device, including a vacuum tank, the vacuum tank is sealed with a vacuum tank cover, a pressure sensor is installed on the upper part of the cabin of the vacuum tank, a temperature heater and a temperature sensor are installed on the inner bottom of the vacuum tank, an ultrasonic transducer is installed on the outer bottom of the vacuum tank, the vacuum tank is connected to the vacuum pump exhaust port through a pipeline, a vacuum valve is provided on the pipeline, a vacuum tank is installed between the vacuum tank and the vacuum pump, a tank rupture valve is installed on the top of the vacuum tank, a tank drain valve is installed on the bottom of the vacuum tank, a tank extraction valve is provided on the connecting pipeline between the vacuum tank and the vacuum pump, the pipeline between the vacuum tank and the vacuum tank is connected to the left vacuum tank body and the right vacuum tank body respectively, and the pipeline between the vacuum tank and the vacuum tank is provided with a left pulse valve and a right pulse valve respectively, and the components are all controlled by an integrated control system. The present invention saves labor, is easy to operate, and has a good cleaning effect.

Description

Technical Field

[0001] The invention mainly relates to the field of cleaning of medical devices, and in particular to a multi-stage variable voltage pulse cleaning device. Background Art

[0002] Under current circumstances, hospitals mainly use manual cleaning or spray machines to clean rigid endoscopes. Since the lumen aperture of some rigid endoscopes is very small, it is very difficult to clean them. Especially when using a spray machine for cleaning, the perfusion tube inside cannot be completely perfused. Therefore, during the disinfection process, it is often found that the cleaning is not thorough and the cleaning is repeated. If it relies entirely on manual cleaning, the labor intensity of medical staff will be very high, and infection incidents are prone to occur. Because most of the surgeries performed with rigid endoscopes are susceptible to infection and are greatly affected by human factors, it is difficult to stabilize the cleaning quality.

[0003] Currently, hospitals mainly rely on manual scrubbing to clean rigid endoscopes. However, the lumen aperture of some rigid endoscopes is very small, which brings great trouble to the cleaning personnel, and the cleaning quality is difficult to guarantee. If the cleaning is not thorough, it will bring the risk of infection to subsequent operators. Moreover, surgical operations performed with rigid endoscopes are generally high-risk and prone to infection. Therefore, the problem of endoscope cleaning has always plagued major hospitals. Our multi-stage pulse cleaning technology has a good cleaning effect on the cleaning of rigid endoscopes and conventional instruments, which can effectively solve this problem. Summary of the invention

[0004] The present application mainly achieves efficient cleaning of various instruments by matching various structures to produce a method for vacuum washing or backwashing the inside of tubular cavity instruments, while cleaning the surfaces of various instruments by means of variable voltage pulses.

[0005] A multi-stage variable pressure pulse cleaning device mainly comprises a vacuum tank, the vacuum tank is sealed with a vacuum tank cover, a pressure sensor and an air rupture valve are installed on the upper part of the tank body of the vacuum tank, a temperature heater and a temperature sensor are installed on the inner bottom of the vacuum tank, an ultrasonic transducer is installed on the outer bottom of the vacuum tank, the vacuum tank is connected to the vacuum pump exhaust port through a pipeline, a vacuum pump valve is provided on the pipeline one, a vacuum tank is installed between the vacuum tank and the vacuum pump, a tank rupture valve is installed on the top of the vacuum tank, a tank drain valve is installed on the bottom of the vacuum tank, a tank extraction valve is provided on the connecting pipeline two between the vacuum tank and the vacuum pump, a pipeline three between the vacuum tank and the vacuum tank is connected to the left vacuum tank body and the right vacuum tank body respectively, a left pulse valve and a right pulse valve are provided on the pipeline four between the vacuum tank and the vacuum tank respectively, and the pressure sensor, the air rupture valve, the temperature heater, the temperature sensor, the ultrasonic transducer, the drain valve, the vacuum pump valve, the tank rupture valve, the tank drain valve, the tank extraction valve, the submerged jet valve, the submerged drying valve, the left pulse valve and the right pulse valve are all controlled by an integrated control system.

[0006] Preferably, the number of inlets through which the pipeline three between the vacuum tank and the vacuum tank is respectively connected to enter the left vacuum tank body and / or the right vacuum tank body is n, and n is greater than or equal to 1.

[0007] Preferably, a vacuum suction device is installed at the entrance of the pipeline three between the vacuum tank and the vacuum tank, respectively connected to the left vacuum tank body and / or the right vacuum tank body. The vacuum suction device can refer to a vacuum suction card connection device, diversion box and cleaning device applied for on the same day.

[0008] Preferably, a jet device is installed below the temperature heater, and the jet device includes a jet hole, a jet tube, a jet tube drainage hole and a jet tube inlet. The jet pipeline is arranged in an "out" shape, and a jet hole is provided on the top of the jet tube. The jet tube passes through the trough body and is downwardly connected to a submerged drying valve.

[0009] Preferably, the jet holes are circular holes with an angle of 90 degrees and a distance of 30 to 50 mm.

[0010] Preferably, the jet tube drain hole is provided in the middle of the bottom of the jet tube bottom angle, and the jet tube drain hole is circular, square, triangular or irregular in shape. The jet tube drain hole can discharge the cleaning liquid inside the jet tube to avoid residue and secondary pollution.

[0011] Preferably, the included angle of the jet hole is 90 degrees, and the jet hole opening faces upward.

[0012] Preferably, the left pulse interface or the right pulse interface of the vacuum tank extends to the bottom of the vacuum tank respectively.

[0013] Preferably, the vacuum pump is connected to a cooling tank, the top of the cooling tank is connected to the vacuum pump exhaust port via pipeline five, the bottom of the cooling tank is connected to the vacuum pump water inlet, the upper part of the cooling tank is connected to the cavitation port of the vacuum pump, the cooling tank is connected to an external water source, and a drain port and an exhaust port are provided on the cooling tank.

[0014] Preferably, the heating device is composed of a heater and its connecting wires, and the heater is an M-shaped heating tube evenly arranged at the bottom of the vacuum tank, so that the cleaning liquid in the vacuum tank can be evenly heated.

[0015] Preferably, the vacuum tank is a sealed cabin, and when the vacuum tank is evacuated, the vacuum tank can withstand a negative pressure of more than -98 KPa without being deformed.

[0016] Preferably, the pressure sensor is installed outside the vacuum tank, the pressure sensor is connected to the vacuum tank by a pipeline, and the connection port of the pipeline is above the water level. The pipeline is installed above the liquid level.

[0017] Preferably, the pressure sensor detects the vacuum degree in the vacuum tank by the pressure sensor, so that the control system controls the pressure sensor to implement the data change step.

[0018] Preferably, the drainage device consists of a drainage valve, a drainage isolation valve and connecting pipes thereof, the water inlet end of the drainage valve is connected to the drainage port at the bottom of the vacuum tank, and the water outlet end of the drainage valve is connected to the drainage port through the drainage isolation valve.

[0019] Preferably, an ultrasonic transducer is installed at the bottom of the vacuum tank, and a hole is dug at the bottom of the vacuum tank to maintain a thickness of 1.5 to 3 mm for installing the transducer, which achieves the best ultrasonic effect. When the vacuum negative pressure is maintained between -40 and 60 KPa, the air dissolved in the liquid in the vacuum tank is sucked away, and the cavitation action is concentrated on the inner wall of the object to be cleaned, with a strong force.

[0020] Preferably, the water level detection system is composed of a plurality of liquid level detection switches and connecting pipelines. The liquid level detection switches are high liquid level detection switches and low liquid level detection switches, and detection ports are opened on the cleaning tank.

[0021] Preferably, the vacuum suction device includes a vacuum suction movable clamping device and a vacuum suction diverter box, the vacuum suction movable clamping device includes a guide plate, a sleeve plate and a fixed plate, the guide plate and the sleeve plate are semi-circular, the guide plate is connected to the sleeve plate, the sleeve plate is connected to the fixed plate, the sleeve plate is clamped between the guide plate and the fixed plate, the arc surface of the guide plate is higher than the arc surface of the sleeve plate, the fixed plate is provided with an opening, and the height of the opening is higher than the height of the arc surface of the sleeve plate.

[0022] Preferably, the openings at both ends of the semicircular guide plate are designed as slope structures or as guide inclined plates.

[0023] Preferably, a retractable tubular interface is installed in the opening on the fixed plate, a spring is installed in the fixed plate, one side of the spring is sleeved inside the tubular interface, the outside of the tubular interface is sleeved in a ring, the ring is threadedly connected to the opening on the fixed plate, when the movable joint is put into the sleeve plate, the tubular interface is pressed into the opening, and when the movable joint is taken out, the tubular interface slightly pops out of the opening under the action of elastic force. The movable joint of the vacuum suction shunt box moves up and down, and the spring elastic force inside the fixed side of the fixed plate causes the tubular interface to retract, which is convenient for positioning and removal.

[0024] The vacuum suction shunt box comprises a box body and a movable joint. The movable joint is a tubular structure. The head side of the movable joint has a chamfered bulging ring structure. The chamfered design of the bulging ring structure of the movable joint can improve the operating performance and sealing effect. One side of the movable joint is placed in the sleeve plate through the guide plate and is sealed and connected with the opening of the fixed plate. The connection means that gas or liquid can flow through the fixed plate through the movable joint. A filter device is installed in the movable joint to prevent instrument accessories and other debris from being sucked in.

[0025] Preferably, at least one input port is provided on one side of the box body, and the other side of the movable joint is connected to the input port of the box body. At least one output port is also provided on the other side of the box body, and the output port is installed with a silicone joint, which is divided into an inner layer and an outer layer, the middle part of the inner layer is a large circular hole, and the middle part of the outer layer is a small hole. The groove between the inner layer and the outer layer just clamps the box body of the output port, and the material of the silicone joint has elasticity. The side of the vacuum suction diversion box is distributed with 1 to 40 output ports for diversion, and each output port can be installed with a silicone joint, and the tubular instrument is directly inserted into the central circular hole of the silicone joint to facilitate the diversion and suction of multiple tubular instruments for cleaning. The bottom of the vacuum suction diversion box is connected to the movable joint to facilitate the flow of liquid and completely drain the liquid without dead ends. A silicone plate is attached to the side or side of the vacuum suction shunt box. There are multiple small holes or forks on the front of the silicone plate. The range of the small holes is 3 to 14 mm. There are multiple small holes on the front or side of other stretchable materials. There are forks and round holes in the middle of the holes, etc., to facilitate the direct insertion of tubular instruments for cleaning.

[0026] Preferably, at least one ridge is designed in the large circular hole of the inner layer of the silicone joint, and the ridge is called a reinforcing rib, which can play a role in tightening the tubular device.

[0027] Preferably, a steel ring is designed inside the outer layer of the silicone joint, and the outer diameter of the steel ring is larger than the diameter of the outlet of the shunt box, and the inner diameter of the steel ring is smaller than the diameter of the outlet of the shunt box. The outer layer of the silicone joint is configured with a steel ring, and the outer diameter of the steel ring is larger than the outlet of the shunt box, and the inner diameter of the steel ring is smaller than the outlet of the shunt box, so as to strengthen the strength of the inner circle range of the steel ring. The steel ring is edged with silicone, and a circular hole or fork is opened in the middle of the steel ring by silicone. When the tubular cavity instrument is directly inserted, the deformation force of the silicone hole squeezes the steel ring. Since the outer diameter of the steel ring is larger than the diameter of the outlet of the shunt box, the silicone joint is not easy to fall off into the inside of the shunt box.

[0028] Preferably, the outer circular hole of the silicone joint is a fork, a round hole, a square hole or an elliptical hole. The small hole in the middle of the silicone joint can be of various shapes. The fork in the middle is convenient for inserting tubular instruments within 3 to 14 mm for general cleaning, and the round hole is suitable for cleaning instruments within 1 to 8 mm.

[0029] Preferably, the silicone connector is connected to a traction hose, and the traction hose is directly inserted into the perfusion interface of the tubular instrument to facilitate direct insertion of the tubular instrument when it is too long or the perfusion port is larger than the silicone connector, and the connection is replaced by the traction tube.

[0030] Preferably, the vacuum suction device fixes the left and right inner walls of the vacuum tank. The vacuum suction device inside the vacuum tank is composed of a movable card joint, a shunt box, and a silicone joint. The object to be cleaned is inserted into the silicone joint, and the vacuum suction cleaning liquid quickly flows through the inner wall of the object to be cleaned. The outside of the vacuum tank of the vacuum suction device is connected to the vacuum tank exhaust port by pipelines and isolation valves respectively. The vacuum tank exhaust port is connected to the tank exhaust valve and is connected to the vacuum pump exhaust port pipeline through a one-way valve. The one-way valve is conducive to vacuum suction of a large amount of cleaning liquid into the vacuum tank for backwashing, preventing a large amount of cleaning liquid from entering.

[0031] A cleaning method for a multi-stage voltage-changing pulse cleaning device mainly includes the following steps:

[0032] Process 1: Refilling: Place the object to be cleaned into the vacuum tank, close the vacuum tank cover, and refill the cleaning liquid;

[0033] Process 2: Heating: When the cleaning liquid reaches the set level, turn on the heater to raise the temperature to 45℃~55℃;

[0034] Process three: vacuum pulse tank extraction: open the tank extraction valve, start the vacuum pump to extract pressure, when a high negative pressure is formed inside the vacuum tank, first open the air rupture valve, then open the pulse valve, the cleaning liquid is instantly poured into the vacuum tank, forming a positive pulse flushing, the pulse valve includes a left pulse valve and a right pulse valve.

[0035] Preferably, the third step is vacuum pulse tank extraction: open the tank extraction valve to start the vacuum pump to extract pressure, when a high negative pressure is formed inside the vacuum tank, first open the air rupture valve, then open the left pulse valve, and the cleaning liquid is instantly poured into the vacuum tank to form a left positive pulse.

[0036] Preferably, the third step is vacuum pulse tank extraction: open the tank extraction valve to start the vacuum pump to extract pressure. When a high negative pressure is formed inside the vacuum tank, first open the air rupture valve and then open the right pulse valve. The cleaning liquid is instantly poured into the vacuum tank to form a right positive pulse.

[0037] Preferably, step four is vacuum pulse back extraction: close the tank extraction valve, gas rupture valve and pulse valve, open the vacuum extraction valve, start the vacuum pump to extract pressure, and when a high negative pressure is formed inside the vacuum tank, open the tank rupture valve and pulse valve, and the cleaning liquid in the vacuum tank instantly rebounds into the vacuum tank to form a reverse pulse flushing. The pulse valve includes a left pulse valve and a right pulse valve.

[0038] Preferably, in the fourth step of the vacuum pulse back extraction, the tank extraction valve, the gas rupture valve and the left pulse valve are closed, the vacuum extraction valve is opened to start the vacuum pump to extract pressure, and when a high negative pressure is formed inside the vacuum tank, the tank rupture valve and the left pulse valve are opened, and the cleaning liquid in the vacuum tank is instantly recoiled into the vacuum tank to form a left reverse pulse.

[0039] Preferably, in the fourth step of the vacuum pulse back extraction, the tank extraction valve, the gas rupture valve and the right pulse valve are closed, the vacuum extraction valve is opened to start the vacuum pump to extract pressure, and when a high negative pressure is formed inside the vacuum tank, the tank rupture valve and the right pulse valve are opened, and the cleaning liquid in the vacuum tank is instantly recoiled into the vacuum tank to form a right reverse pulse.

[0040] Preferably, the process also includes pulse air blowing inside the lumen: open the vacuum valve and vacuum pump, extract the gas inside the vacuum tank, and after reaching the set pressure value, close the vacuum pump and vacuum valve, open the tank breaker valve to keep the vacuum tank at normal pressure (0KPa), and then open the pulse valve. At this time, there is a relatively large pressure difference between the vacuum tank and the vacuum tank, just like the principle of a high-pressure water gun. At the moment the pulse valve is opened, air quickly fills into the lumen instrument to squeeze out the cleaning liquid inside the lumen. The pulse valve is closed after opening for 2 seconds, and the air breaker valve is immediately opened to restore the vacuum tank to normal pressure. The cleaning liquid squeezed out of the lumen under normal pressure quickly fills the space occupied by air. This back and forth flow brings a relatively large flushing effect to the inside of the lumen, which has the effect of cleaning the inside of the lumen. The same principle, repeat the above steps, and the left pulse valve is changed to the right pulse valve to alternately perform the left and right lumen internal pulse air blowing steps. After reaching the set number of times, the entire lumen internal pulse air blowing process ends.

[0041] Preferably, after the completion of steps one and two, the following step of underwater variable pressure pulse can be performed: open the vacuum valve, start the vacuum pump, and evacuate the vacuum tank. After the pressure in the vacuum tank reaches the set value, open the underwater jet valve, and the liquid in the vacuum tank is instantly injected into the vacuum tank, forming a powerful flushing force, while driving the cleaning liquid in the vacuum tank to perform rapid and violent flushing and cleaning.

[0042] Preferably, the pressure value is -60KPa to -200KPa, which is divided into three pressure levels: -60KPa to -100KPa.

[0043] -100KPa~-150KPa, -150KPa~-200KPa, the interval time of different pressure levels is 1 second to 30 seconds. The first pressure level is used to clean the equipment that is easy to clean, the second pressure level is used to clean the equipment that is difficult to clean, and the third pressure level is used to clean the equipment that is particularly difficult to clean. Repeated cleaning at three different pressure levels and different time intervals forms underwater variable pressure pulse cleaning.

[0044] Preferably, after the completion of steps one and two, the following step of liquid pressure pulse can be performed: open the vacuum valve, start the vacuum pump, evacuate the vacuum tank, and after the pressure in the vacuum tank reaches the set value, open the gas rupture valve, and the gas instantly enters the vacuum tank, forming a powerful flushing force, while driving the cleaning liquid in the vacuum tank to perform rapid and violent flushing and cleaning.

[0045] Preferably, the pressure value is -60KPa to -200KPa, which is divided into three pressure levels: -60KPa to -100KPa.

[0046] -100KPa~-150KPa, -150KPa~-200KPa, the interval time of different pressure levels is 1 second to 30 seconds. The first pressure level is used to clean the instruments that are easy to clean, the second pressure level is used to clean the instruments that are difficult to clean, and the third pressure level is used to clean the instruments that are particularly difficult to clean. The three different pressure levels and different time intervals are repeated to form liquid pressure pulse cleaning.

[0047] Preferably, the various steps of a cleaning method for a multi-stage voltage-changing pulse cleaning device can be used in any combination according to actual needs, and the effect is more ideal.

[0048] Preferably, a vacuum valve is connected between the vacuum tank and the vacuum pump, and the vacuum pump directly and independently evacuates the vacuum tank to atmospheric pressure.

[0049] Preferably, the vacuum pump is connected to the vacuum tank and the vacuum groove, and the vacuum pump is connected to the vacuum tank through an isolation valve via a one-way valve, and the vacuum tank and the vacuum groove are connected by an isolation valve. When the vacuum pump evacuates the negative pressure of the vacuum tank, the isolation valve between the vacuum tank and the vacuum groove is opened, and the cleaning liquid in the vacuum groove is attracted and pulsed into the vacuum tank. The vacuum pump and the vacuum groove are connected through the vacuum pumping valve, and the vacuum pump directly and separately evacuates the atmospheric pressure of the vacuum groove. The vacuum pump is respectively connected to the vacuum tank and the vacuum groove through a one-way valve through a three-way, and there is an isolation valve between the vacuum pump and the vacuum tank, and there is an isolation valve between the vacuum pump and the vacuum groove. When the suction pulse valve is opened, the cleaning liquid in the vacuum tank is backwashed into the vacuum groove.

[0050] Preferably, the vacuum tank is respectively connected to the vacuum tank and the vacuum pump at both ends with an isolation valve and a drainage device. After the liquid enters the vacuum tank, a large or small amount of cleaning liquid remains at the bottom of the vacuum tank. The vacuum tank air rupture valve is opened, and a filter is installed at the air inlet of the vacuum tank air rupture valve to prevent external air pollution. The external pressure and the internal pressure of the vacuum tank return to normal pressure, and the accumulated liquid at the bottom of the vacuum tank is discharged by the drainage isolation valve.

[0051] Preferably, the top of the vacuum pump cooling device is provided with an exhaust port and a vacuum pump exhaust port respectively, and the exhaust port is connected to an external exhaust pipe to discharge a large amount of gas extracted by the vacuum pump.

[0052] Preferably, the cooling water inlet solenoid valve, vacuum pump, air rupture valve, drain valve, liquid level detection device, left and right pulse valves, vacuum valve, water supply valve, tank extraction valve, air rupture valve, pressure sensor, liquid rupture valve, printer, data transmission device, and button switch are connected to a control system by lines. The control system transmits data images to the touch screen, and the touch screen displays relevant data operation and saves data. After the process is completed, the touch screen sends data to the printer to print it.

[0053] The present invention can achieve the following functions:

[0054] Cooling water, and recycling the cooling water, a vacuum pump cooling system, the vacuum pump removes the air in the vacuum tank or vacuum tank to make it a negative pressure state; water is injected into the cooling tank to store the cooling water source during the operation of the vacuum pump; the cooling water supply valve replenishes water to the cooling tank; when the water in the cooling tank is low, the cooling water supply valve can be used to inject cooling water into it, and when the water in the cooling tank is high, the cooling water supply valve stops replenishing water. During the startup of the vacuum pump, the cooling water in the cooling tank can be sucked into the cooling pipeline of the vacuum pump and discharged through the outlet of the cooling pipeline of the vacuum pump. By continuously providing cooling water, the operating temperature of the vacuum pump is kept at a low level, meeting the conditions for long-term operation of the vacuum pump without affecting its performance. A temperature detection device can also be installed in the cooling tank and a drain valve can be added. The cooling water passing through the vacuum pump can flow back to the cooling tank, and then be discharged through the cooling tank when the temperature exceeds the set temperature. This method can save part of the cooling water source and play a conservation role.

[0055] Flushing function: the cleaning liquid is injected into the vacuum tank and the cleaned object is immersed; the air rupture valve is opened and connected to the atmosphere at the top of the vacuum tank to increase the pressure of the vacuum tank or maintain it at normal pressure; the tank rupture valve connects the vacuum tank and the external atmosphere, mainly to rupture the air in the vacuum tank to keep it at normal pressure; the tank drain valve is located at the bottom of the vacuum tank and is connected to the drainage pipeline to discharge the cleaning liquid out of the vacuum tank; the left pulse valve connects the vacuum tank and the left side of the vacuum tank, and the liquid inside the lumen instrument connected to the left interface is flushed back and forth between the two cavities under the action of the pressure difference; the right pulse valve connects the vacuum tank and the right side of the vacuum tank, and the liquid inside the lumen instrument connected to the left interface is flushed back and forth between the two cavities under the action of the pressure difference; the vacuum tank and the vacuum tank are connected through a valve, and the flow pulse of the cleaning liquid between the two tanks is realized through the pressure difference between the two cavities.

[0056] The principle of liquid flowing from high pressure to low pressure is to open the gas break valve to keep the vacuum tank at normal pressure (about 0KPa). By evacuating the vacuum tank, when a certain vacuum negative pressure (about -90KPa) is reached, the left pulse valve or the right pulse valve is opened, and the normal pressure cleaning liquid in the vacuum tank connected to the outside of the left pulse valve or the right pulse valve will be quickly pulsed into the vacuum tank through the docking port. Because the pressure difference is large, the flow rate is fast and the flushing force is strong. It is similar to the principle of a high-pressure water gun and can be used as an efficient cleaning method for lumen objects. After the vacuum tank is filled with cleaning liquid, the cleaning liquid can be discharged from the vacuum tank by opening the tank break valve and the tank drain valve. The reason for opening the tank break valve during drainage is to prevent the formation of negative pressure in the tank, so that the liquid outside the vacuum tank flows back into the vacuum tank. After the cleaning liquid in the vacuum tank is drained, the above action can be repeated to achieve multiple high-pressure pulse extraction and washing of lumen objects.

[0057] To realize the backwash function of the vacuum tank, open the tank rupture valve to keep the vacuum tank at normal pressure (0KPa), evacuate the vacuum tank to make it a negative pressure (-90KPa), and the vacuum tank is at normal pressure (0KPa). By opening the left pulse valve or the right pulse valve, the cleaning liquid will quickly flow back into the vacuum tank. Due to the large pressure difference, the reflux speed is fast, producing a strong flushing effect. During the reflux process, the cleaning liquid will take away the stains attached to the inside of the lumen when passing through the inside of the lumen. This is an efficient way to clean the inside of the lumen.

[0058] A method for saving cleaning fluid. After each pulse cleaning process is completed, the tank drainage action may not be performed. By backflowing the cleaning fluid back into the vacuum tank, the multi-stage pulse tank cleaning and tank backwashing process can be efficiently completed by alternating execution.

[0059] The liquid phase pulse and gas phase pulse functions first heat the cleaning liquid in the vacuum tank to the set temperature. According to the principle that the boiling point of water decreases as the vacuum degree decreases, after the vacuum tank is evacuated, the cleaning liquid reaches the boiling point and generates many bubbles. At this time, air is poured into the bottom of the liquid surface to restore the cleaning liquid to normal pressure. Because the old bubbles in the cleaning liquid burst due to the restoration of normal pressure, and the newly poured air also generates new bubbles. This process is very short, so a certain shock wave is generated around the cleaning liquid at the place where the bubbles are generated and burst. This shock wave is the basic theoretical basis of our liquid phase pulse cleaning. At the same time, we put the cleaning effect test device into the cleaning liquid for continuous impact cleaning and intermittent voltage washing. It is found that the use of intermittent voltage The flushing effect is better than continuous direct flushing. At the same time, we found that heating the bottom cleaning liquid during the vacuuming process will produce more bubbles and more obvious cleaning power. This is the formation mechanism of multi-stage variable pressure liquid phase pulse cleaning. Regarding gas phase pulse cleaning, we got inspiration from our vacuum ultrasonic cleaning machine. When vacuuming inside, we found that many bubbles would be generated in the transparent rubber tube immersed in the cleaning liquid. As the bubbles become more and larger, they slowly squeeze out the cleaning liquid in the tube. At this time, after air is poured above the liquid surface, the cleaning liquid returns to normal pressure, the bubbles burst, and the cleaning liquid quickly fills the blank space left by the bursting bubbles. At the moment when the bubbles burst inside the tube cavity, the cleaning liquid refluxes to bring a strong flushing effect. Good cleaning effects can be achieved by repeating the vacuuming and gas breaking processes of different levels many times.

[0060] Beneficial effects of the present invention:

[0061] Our equipment can automatically complete the entire process of cleaning, disinfecting and drying rigid endoscopes and instruments. It can clean 1-8 sets of rigid endoscopes and their accessories at a time. The operator only needs to discharge the recovered rigid endoscopes into the vacuum tank as required and start the corresponding cleaning program. The equipment will automatically complete the entire set processing process. After the cleaning is completed, the equipment will alarm to remind the nurse. This saves cleaning personnel, improves cleaning efficiency, and effectively guarantees the cleaning quality.

[0062] The vacuum pulse tank extraction and tank backwashing of the present invention are performed alternately to achieve efficient cleaning of the interior of the lumen. At the same time, multi-stage variable pressure gas phase cleaning and liquid phase cleaning can also achieve cleaning of lumen instruments and non-lumen instruments, thereby improving the cleaning quality. The vacuum pump circulation system of the present invention can allow water vapor to circulate freely, and can quickly meet the cleaning requirements, thereby ensuring the quality of the entire cleaning. The cleaning method of the present invention is simple and practical, can perform alternating cleaning, can ensure the cleaning quality of objects that are difficult to clean, solves practical problems, improves efficiency, and saves costs.

[0063] The variable pressure suction pulse cleaning of the present invention is energy-saving, environmentally friendly and recyclable. Another invention is that the vacuum tank can store gas and liquid to maintain pressure. Close the tank extraction valve, open the vacuum valve, extract the atmospheric pressure of the vacuum tank, open the tank rupture valve and the left pulse valve and the right pulse valve, and the cleaning liquid inside the vacuum tank will backwash to the silica gel suction device and flow out through the inner wall of the object to be cleaned into the vacuum tank, forming a left positive pulse and a left reverse pulse or a right positive pulse and a right reverse pulse. The cleaning liquid on the inner wall of the object to be cleaned will be flushed along the negative pressure suction direction. The left and right pulse valves will be opened alternately and repeated many times, and the set pressure will be changed each time to achieve the ideal effect.

[0064] By alternating multi-stage liquid-upper-pressure pulses and multi-stage liquid-lower-pressure pulses, the cleaning of the cleaning object is achieved, and the cleaning quality is improved. The jet hole opened on the jet tube of the present invention can not only directly and forcefully flush the cleaning object, but also quickly stir the cleaning liquid, so that the cleaning object can be cleaned more quickly. The opening of the jet hole of the present invention is facing upward mainly to better flush the object and stir the cleaning liquid. Each jet tube has 1 to 3 small holes at the bottom, which is conducive to the outflow of accumulated water in the jet tube. The water level detection system of the present invention can simultaneously detect high, medium and low liquid levels, and can replenish liquid in time to ensure the cleaning quality. The vacuum tank of the present invention can make water vapor circulate freely, and can quickly meet the cleaning requirements, thereby ensuring the quality of the entire cleaning. The cleaning device of the present invention has a simple structure, is practical, saves time, and avoids personnel infection.

[0065] The invention can be applied to the cleaning of rigid endoscopes and conventional surgical instruments in the medical industry, and can also be applied to the cleaning of metal parts in the industrial field. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 It is a structural schematic diagram of a multi-stage voltage-changing pulse cleaning device of the present application;

[0067] Figure 2 It is a schematic diagram of the structure of a vacuum tank of a multi-stage variable pressure pulse cleaning device of the present application;

[0068] Figure 3 This is a schematic diagram of the structure of a vacuum tank of a multi-stage variable pressure pulse cleaning device of the present application.

[0069] Figure 4 It is a structural schematic diagram of a jet pipeline of a multi-stage variable pressure pulse cleaning device of the present application;

[0070] Figure 5 It is a process flow chart of a cleaning method of a multi-stage voltage-changing pulse cleaning device of the present application.

[0071] Reference numerals

[0072] 1 Multi-stage voltage-changing pulse device 2 Vacuum tank 3 Vacuum tank cover 4 Cleaned object 5 Pressure sensor 6 Vacuum pumping valve 7 Tank rupture valve 8 Gas rupture valve 9 Vacuum tank 901 First connection port 902 Second connection port 903 Third connection port 904 Fourth connection port 905 Fifth connection port 10 Check valve 11 High liquid level 12 Left pulse valve 13 Low liquid level 14 Vacuum suction device 15 Right pulse valve 16 Water supply valve 17 Heater 18 Temperature sensor 19 Fluidic device 1901 Fluid hole 1902 Fluid tube 1903 Fluid tube drain hole 1904 Fluid tube inlet 20 Filter 21 Submerged drying valve 22 Printer 23 Data transmission device 24 Touch screen 25 Power switch 26 Emergency stop switch 27 Drain valve 28 Tank drain valve 29 Vacuum pump 30 Cooling tank 31 Cooling and water supply valve 32, Ultrasonic transducer 33, Fluid pumping valve 34, Submerged jet valve Implementation

[0073] The method of the present invention is described below in conjunction with the accompanying drawings.

[0074] like Figure 1-4A multi-stage variable pressure pulse cleaning device 1 is shown, comprising a vacuum tank 2, in which a cleaning liquid is injected and the object to be cleaned is immersed. The device is composed of a sealable cabin that can withstand a vacuum negative pressure of -100KPa without deformation or damage; a vacuum tank cover 3 that seals the vacuum tank 2; the object to be cleaned 4 is placed in the vacuum tank 2, which can be a tubular cavity device or a non-tubular cavity device; a pressure sensor 5 is installed on the upper part of the vacuum tank 2, which can detect the pressure value in the vacuum tank 2 in real time. When the vacuum valve 6 and the vacuum pump 29 are turned on at the same time, the sealed vacuum tank 2 can be evacuated to exhaust the air inside it to form a negative pressure; the tank air rupture valve 7 has the function of connecting the vacuum tank 9 with the outside air to keep the vacuum tank 9 at a normal pressure state; the air rupture valve 8 is located at the upper part of the vacuum tank 2 and connected to the air, so that the vacuum tank 2 can be pressurized or maintained at a normal pressure; the vacuum tank 9 and the vacuum tank 2 are connected through a valve, and the cleaning liquid is realized between the two tanks through the pressure difference between the two cavities. The check valve 10 prevents the liquid in the vacuum tank 2 from flowing back into the vacuum pump 29; the high liquid level 11 functions to limit the liquid height in the vacuum tank 2, and the injection of cleaning liquid is stopped when the high liquid level 11 is reached; the left pulse valve 12 functions to connect the vacuum tank 9 and the vacuum tank 2, and through the pressure difference between the vacuum tank 9 and the vacuum tank 2, the cleaning liquid in the tubular cavity object immersed in the cleaning liquid flows quickly from the vacuum tank 2 to the vacuum tank through the dedicated interface, or flows quickly back to the vacuum tank 2 from the vacuum tank 9, and the inside of the tubular cavity is efficiently flushed during the flow of the cleaning liquid; the low liquid level 13 is a restrictive liquid level, and the heater 11 can be turned on only when the low liquid level 13 is exceeded; the vacuum suction device 14 connects the tubular cavity instrument and the left pulse valve 12 or the right pulse valve 15; the function of the right pulse valve 15 is the same as that of the left pulse valve 12, except that one is located on the left side of the vacuum tank 2 and the other is located on the right side of the vacuum tank 2; the water replenishment valve 16 functions to replenish the cleaning liquid to the vacuum tank 2. The cleaning liquid can be pure water, tap water, softened water, or various special cleaning agents can be added; the function of the heater 17 is to heat the cleaning liquid in the vacuum tank 2 or maintain a constant temperature. It is composed of an M-shaped electric heating tube installed at the bottom of the vacuum tank 2, but it can also be a steam heating tube or a heating device of other shapes; the function of the temperature sensor 18 is to detect the real-time temperature of the vacuum tank 2; the function of the jet device 19 is to inject liquid into the bottom of the cleaning liquid through each jet hole; the jet device 19 and the vacuum tank 9 are connected by a pipeline, and a submerged jet valve 34 is provided on the pipeline, and the filter 20 filters the gas injected into the vacuum tank 2; the submerged drying valve 21 connects the jet device 19 and the external air; the drain valve 27 is located at the bottom of the vacuum tank 2, and the liquid in the vacuum tank 2 is discharged when it is opened; the tank drain valve 28 is used to discharge the liquid in the vacuum tank 9. When the tank is drained, in order to prevent the liquid outside the vacuum tank 9 from flowing back into the vacuum tank 9, the tank gas rupture valve 7 needs to be opened; the vacuum pump 29 extracts the air in the vacuum tank or the vacuum tank 12; the cooling tank 30 provides a cooling water source for the vacuum pump; the cooling water supply valve 31 transducer 32 ultrasonic generator energy conversion device.

[0075] A multi-stage variable pressure pulse cleaning device 1 mainly comprises a vacuum tank 2, wherein the cleaning interior contains a cleaning object 4, the vacuum tank 2 is sealed with a vacuum tank cover 3, a pressure sensor 5 and an air rupture valve 8 are installed on the upper part of the tank body of the vacuum tank 2, a temperature heater 17 and a temperature sensor 18 are installed on the inner bottom of the vacuum tank 2, an ultrasonic transducer 32 is installed on the outer bottom of the vacuum tank 2, the vacuum tank 2 is connected to the vacuum port of a vacuum pump 29 via a pipeline, a vacuum valve 6 is provided on the pipeline, a vacuum tank 9 is installed between the vacuum tank 2 and the vacuum pump 29, and the vacuum tank 9 has multiple structural parts Interfaces (first connection port 901, second connection port 902, third connection port 903, fourth connection port 904, fifth connection port 905), the air suction port of the vacuum pump 29 is connected to the first connection port 901 of the vacuum tank 9 via a one-way valve 10, the tank suction valve 33 is connected to the vacuum pump 29 via a one-way valve 10, the second connection port 902 of the vacuum tank 9 and the air breaker valve pipeline inlet are installed with a filter 20, the third connection port 903 of the vacuum tank 9 is connected to the left pulse valve 12, the fourth connection port 904 of the vacuum tank 9 is connected to the right pulse valve 15, and the fifth connection port 905 of the vacuum tank 9 is connected to the drain valve 28. A tank breaking valve 7 is installed on the top of the vacuum tank 9, a tank drain valve 28 is installed on the bottom of the vacuum tank 9, a tank extraction valve 33 is provided on the connecting pipeline 2 between the vacuum tank 9 and the vacuum pump 29, a pipeline 3 between the vacuum tank 9 and the vacuum tank 2 is respectively connected to the left vacuum tank body and the right vacuum tank body, a left pulse valve 12 and a right pulse valve 15 are respectively provided on the pipeline 4 between the vacuum tank 9 and the vacuum tank 2, and the pressure sensor 5, the temperature heater 17, the temperature sensor 18, the ultrasonic transducer 32, the drain valve 27, the vacuum extraction valve 6, the tank breaking valve 7, the tank drain valve 28, the tank extraction valve 33, the left pulse valve 12 and the right pulse valve 15 are all controlled by the integrated control system.

[0076] The pipeline 3 between the vacuum tank 9 and the vacuum tank 2 is connected to three entrances when entering the left vacuum tank body and / or the right vacuum tank body respectively.

[0077] A vacuum suction device 14 is installed at the entrance of the pipeline 3 between the vacuum tank 9 and the vacuum tank 2 when the pipeline 3 is connected to the left vacuum tank body and / or the right vacuum tank body.

[0078] A jet device 19 is installed below the temperature heater 17, and the jet device 19 includes a jet hole 1901, a jet tube 1902, a jet tube drainage hole 1903 and a jet tube inlet 1904. The jet pipeline is arranged in an "out" shape or a honeycomb shape. The jet hole 1901 is provided on the top of the jet tube 1902. The jet tube 1902 passes through the vacuum tank 2 and is downwardly connected to a submerged drying valve 21.

[0079] The jet holes 1902 are circular holes with an angle of 90 degrees and a distance interval of 30 to 50 mm.

[0080] The jet tube 1902 has a circular hole in the middle of the bottom of the bottom angle.

[0081] The jet hole 1901 opens upward at an angle of 90 degrees.

[0082] The left pulse interface or the right pulse interface of the vacuum tank 9 extends to the bottom of the vacuum tank respectively.

[0083] The vacuum pump 29 is connected to a cooling tank 30, the top of the cooling tank 30 is connected to the exhaust port of the vacuum pump 29 via pipeline five, the bottom of the cooling tank 30 is connected to the water inlet of the vacuum pump 29, the upper part of the cooling tank 30 is connected to the cavitation port of the vacuum pump 29, the cooling tank 30 is connected to an external water source, and a drain port and an exhaust port are provided on the cooling tank 30.

[0084] like Figure 5 As shown, the present invention discloses a cleaning method for a multi-stage variable pressure pulse cleaning device, which includes five parts: water replenishment, heating, vacuum pulse tank extraction, vacuum pulse back extraction, and pulse air blowing inside the tube cavity. First of all, it is stated that in the following description process, the system not described is considered to be in a closed state.

[0085] Step 1, water replenishment:

[0086] The water replenishment process is the step of injecting cleaning liquid into the vacuum tank 2 by the water replenishment valve 16. It is divided into two modes: vacuum water replenishment and normal pressure water replenishment, which can be selected according to actual conditions. Vacuum water replenishment means that the vacuum tank 2 is filled with water under negative pressure. The water replenishment valve 16 is opened, and the cleaning liquid is injected into the vacuum tank 2 through the water inlet pipeline. At the same time, the vacuum valve 6 is opened, the vacuum pump 29 is turned on, and the vacuum tank vacuuming action is started to keep the tank body in a negative pressure state (about -80Kpa). When the tank body is under negative pressure, the water on the outside of the water inlet valve will be injected into the cleaning tank at a faster speed, which can improve the water replenishment efficiency. When the cleaning liquid reaches the high liquid level 11, the water replenishment valve 16 is closed to stop water replenishment, and the vacuum valve 6 is also closed, and the vacuum pump 29 is stopped. And open the gas rupture valve 8 (3 to 5 seconds) to restore the vacuum tank 2 to a normal pressure state, completing the entire vacuum water replenishment process.

[0087] The specific method of using normal pressure water replenishment is to open the water replenishment valve 16 and the air rupture valve 8 at the same time, and the cleaning liquid is naturally injected into the vacuum tank 2 under normal pressure (about 0KPa). When the cleaning liquid reaches the height of the high liquid level 11, the water replenishment valve 16 and the air rupture valve 8 are closed to complete the water replenishment process.

[0088] The injected cleaning liquid needs to immerse the cleaning objects, but it needs to maintain a certain height from the top of the vacuum tank. At this time, the vacuum tank is divided into the sub-liquid and the above-liquid according to the liquid level. The cleaning liquid can be pure water, tap water, softened water, or various special cleaning agents can be added.

[0089] Step 2, heating:

[0090] The step of heating the temperature of the cleaning liquid in the vacuum tank 2 to the set temperature. First, the heater 17 is allowed to be turned on only when the cleaning liquid in the vacuum tank 2 exceeds the height of the low liquid level 13. The temperature sensor 18 reads the real-time temperature of the cleaning liquid. When the cleaning liquid temperature is equal to or higher than the set temperature, the heating is stopped. When it is lower than the set temperature, the heater 17 is started to stabilize the cleaning liquid temperature around the set temperature. The heating step can be carried out throughout the entire operation rhythm according to the variable set temperature. The other steps will not be described in detail in the heating process. The heater 17 can be electric heating or steam heating, or a heating device of any shape.

[0091] Process 3, vacuum pulse tank extraction:

[0092] Process 3 is simply described as the process of the cleaning liquid being sucked from the vacuum tank 2 into the vacuum tank 9. The specific steps are as follows:

[0093] First, perform the water replenishment process 1 and the heating process 2, so that a certain height of cleaning liquid is injected into the vacuum tank 2 and heated to the set temperature. After performing process 1 and process 2, open the gas rupture valve 8 to keep the vacuum tank 2 liquid at normal pressure (0KPa). Start the vacuum pump 29 to draw a high vacuum to the vacuum tank 9. After reaching the set time (20 seconds) or the set pressure (-90KPa), open the left pulse valve 12 (3-6 seconds). Because there is a pressure difference of about -90KPa between the vacuum tank 9 and the vacuum tank 2, according to the principle that the liquid flows from the high pressure to the low pressure, the cleaning liquid inside the tubular cavity instrument immersed in the cleaning liquid will quickly flow into the vacuum tank 9 through the vacuum suction device 14 in the vacuum tank 2 through the left pulse valve 12. Because the pressure difference is large, the cleaning liquid inside the tubular cavity instrument is like a pulse and quickly injected into the vacuum tank 9 in a very short time. During the flow process, a strong flushing force is generated to take away the stains inside the tubular cavity, thereby achieving an efficient cleaning effect. After the left pulse valve 12 is opened for the set time, the left pulse valve 12 is closed and the vacuum pump 29 is stopped. After a delay of 2 seconds, the tank gas rupture valve 7 and the tank drain valve 28 are opened to drain the cleaning liquid in the vacuum tank 9. This completes the left vacuum pulse tank pumping step of a process. In the same principle, after the vacuum tank is refilled with cleaning liquid, the above action is repeated, but the left pulse valve 12 is replaced by the right pulse valve 15, and the right vacuum pulse tank pumping step of a process can be completed in the same way. The left vacuum pulse tank pumping and the right vacuum pulse tank pumping are performed alternately, and the entire vacuum pulse tank pumping step ends after the set number of times is reached.

[0094] Step 4: Vacuum pulse extraction

[0095] The process 4 is simply described as the process of the cleaning liquid flowing back from the vacuum tank 9 to the vacuum tank 2. The specific steps are as follows:

[0096] First, after completing step 3, if you choose not to drain the vacuum tank, you can proceed to step 4, the vacuum pulse backwash cleaning step.

[0097] The specific method is to close the gas rupture valve 8 connected to the vacuum tank 2, turn on the vacuum pump 29 to evacuate the vacuum tank 2, and after reaching the set vacuum degree (-80KPa), delay for 10 seconds. Open the rupture valve 7 to keep the vacuum tank 9 at normal pressure. At this time, just open the left pulse valve 12. The cleaning liquid in the vacuum tank 9 passes through the left pulse valve 12 and the vacuum suction device under the action of the pressure difference, and then flows through the interface to the inside of each lumen and returns to the vacuum tank 2. Because the pressure difference is large, the flow rate is fast, so there is a relatively strong flushing effect on the inside of the lumen, and the stains attached to the inside of the lumen are taken away, which plays a cleaning role. Similarly, if the above action is changed from the left pulse valve 12 to the right pulse valve 15, the right side vacuum pulse tank extraction step of a process can also be completed. If process 4 is executed, process 3 does not need to drain the tank, so process 3 and process 4 can be executed alternately to flush the cleaning liquid back and forth between the vacuum tank 2 and the vacuum tank 9, without the need to add additional cleaning liquid, to achieve a more energy-saving and efficient cleaning purpose.

[0098] Step 5: Pulse air blowing inside the lumen

[0099] First, the vacuum tank cover 3 is in a closed state, and the air rupture valve 8 is closed to make the vacuum tank 2 in a closed state. The vacuum valve 6 and the vacuum pump 29 are opened to extract the air inside the vacuum tank 2. After reaching the set time (such as 20 seconds) or the set pressure value (such as -90KPa), the vacuum pump 29 and the vacuum valve 6 are closed. At this time, the rupture valve 7 is opened to keep the vacuum tank 9 at normal pressure (0KPa), and the left pulse valve 12 is opened after a delay of 3 seconds. At this time, there is a relatively large pressure difference between the vacuum tank and the vacuum tank. Just like the principle of a high-pressure water gun, the moment the left pulse valve 12 is opened, air quickly fills into the lumen instrument to squeeze out the cleaning liquid inside the lumen. The left pulse valve is closed after opening for 2 seconds, and the air rupture valve 8 is immediately opened to restore the vacuum tank 2 to normal pressure. The cleaning liquid squeezed out of the lumen under normal pressure quickly fills the space occupied by air. This back and forth flow brings a relatively large flushing effect to the inside of the lumen, which has the effect of cleaning the inside of the lumen. The same principle is used to repeat the above steps. If the left pulse valve is changed to the right pulse valve, the pulse air blowing steps inside the left and right lumens can be performed alternately. When the set number of times is reached, the entire pulse air blowing process inside the lumens ends.

[0100] After executing step 5, the process of the entire embodiment 1 is completed. This embodiment 1 mainly introduces the process flow of steps 1 to 5. Peripheral steps can be added according to actual conditions. These steps are not limited to the cleaning process stage, but can also be applied to other processes such as pre-washing process and rinsing process.

[0101] The position or function of each system can also be adjusted according to actual conditions.

[0102] The following mainly introduces the cleaning methods of various non-intubation instruments, but they can also be used for cleaning intubation instruments.

[0103] The water replenishment process and the heating process are the same as the above-mentioned cleaning method and will not be repeated here. The other processes are as follows.

[0104] Process 6, multi-stage submerged pressure-changing pulse cleaning:

[0105] The specific method is that after executing process 1 and process 2, the cleaning liquid in the vacuum tank 2 reaches the high liquid level 11 and the temperature detected by the temperature sensor 11 reaches the set temperature, and then the multi-stage submerged variable pressure pulse cleaning process is started.

[0106] When the temperature reaches the set temperature, first, open the vacuum valve 6, start the vacuum pump 29, and evacuate the vacuum tank 2. During the vacuum process, the gas in the vacuum tank 2 is extracted. As the vacuum degree gradually increases, the air pressure in the vacuum tank 2 gradually reaches the set vacuum value. The boiling point of the cleaning liquid in the vacuum tank 2 generated according to the set vacuum value also decreases accordingly, and the liquid in the vacuum tank 2 begins to roll. After the pressure sensor 5 reaches the set value, the system time is used to control the rolling time of the liquid in the vacuum tank 2, and the submerged jet valve 34 is opened for 1 second to 3 seconds. 0 seconds, the external atmospheric pressure is sucked into the liquid surface of the vacuum tank 9 through the tank rupture valve 7 along with the filter 20, maintaining a balance with the external pressure, and the liquid in the vacuum tank 9 quickly enters the jet tube 1902, and the jet tube 1902 is evenly fixed on the bottom of the vacuum tank 2 in the shape of "out" or honeycomb. The liquid in the vacuum tank 9 instantly enters the vacuum tank 2 through the jet tube 1902, forming a powerful flushing force, and at the same time drives the cleaning liquid in the vacuum tank 2 to flush quickly and violently. When the vacuum tank 2 is quickly re-pressurized, the vacuum value inside the vacuum tank 2 returns to normal pressure.

[0107] According to our observations, we found that using multiple negative pressure states for underwater variable pressure pulse cleaning in sequence can better meet the cleaning requirements of different instruments or different parts of instruments. Here, we first assign the set pressure to three pressure levels of -60KPa, -80KPa and -100KPa, and repeat the above-mentioned underwater variable pressure pulse cleaning process in sequence. The variable pressure pulse cleaning time at different pressure levels is 1-5 seconds, 3-8 seconds, 9-15 seconds, 12-20 seconds, and 20-30 seconds. The execution at different intervals is the basic principle of multi-stage underwater variable pressure pulse cleaning technology.

[0108] Generally, repeating the submerged pressure-changing pulse cleaning process 2-5 times can achieve an excellent cleaning effect on the tubular cavity instruments. One of the characteristics of the multi-stage pressure-changing pulse cleaning technology is that it is varied. Therefore, the pressure values ​​or time values ​​described above can be adjusted according to the actual situation. This is just an introduction to a method. For example, by controlling the opening time of the submerged jet valve 34 during each submerged pressure-changing pulse cleaning process, the liquid supply of the vacuum tank 2 under the vacuum negative pressure state is controlled, so that the impact force and cleaning force of each injection are different, so that the cleaning ability is effectively guaranteed. At the same time, a large amount of heat will be consumed during the vacuum boiling process, which will reduce the temperature of the cleaning liquid. When the cleaning liquid temperature drops below the specified minimum temperature during the cleaning process, the heater 17 will automatically turn on to ensure that the cleaning process can be carried out effectively.

[0109] Process 7, multi-stage liquid pressure-changing phase pulse cleaning:

[0110] The specific method is that after executing process 1 and process 2, the cleaning liquid in the vacuum tank 2 reaches the high liquid level 11 and the temperature detected by the temperature sensor 11 reaches the set temperature, and then the multi-stage liquid pressure change phase pulse cleaning process is started.

[0111] First, open the vacuum valve 6, start the vacuum pump 29, and evacuate the vacuum tank 2. During the vacuum process, the gas in the vacuum tank 2 is extracted. As the vacuum degree gradually increases, the air content in the cleaning liquid in the vacuum tank 2 gradually decreases and is accompanied by partial boiling. After the pressure sensor 5 detects that the pressure reaches the set pressure and is maintained for a period of time, the gas rupture valve 8 is opened. Because the vacuum tank 2 is in a negative pressure state, due to the huge pressure difference, a large amount of gas is generated and rushes into the vacuum tank 2, which forms a strong flush on the instruments immersed in the cleaning liquid, and the vacuum tank 2 quickly returns to normal pressure.

[0112] According to our observations, the number and intensity of bubbles generated by the injection of air into the liquid surface under different pressures are different. Using liquid-surface variable pressure pulse cleaning under a variety of negative pressure conditions in sequence can better meet the cleaning requirements of different instruments or different parts of instruments. Here, we first assign the set pressure to three pressure levels of -100KPa, -120KPa and -150KPa, and repeat the above-mentioned liquid-surface variable pressure pulse cleaning process in sequence. The liquid-phase pulse cleaning at different pressure levels is 1-5 seconds, 3-8 seconds, 9-15 seconds, 12-20 seconds, and 20-30 seconds. The execution of different intervals is the basic principle of multi-stage liquid-surface variable pressure pulse cleaning technology.

[0113] Generally, repeating the liquid pressure-changing pulse cleaning process 2-5 times can achieve an excellent cleaning effect on the lumen instruments. One of the characteristics of multi-stage liquid pressure-changing pulse cleaning technology is that it is varied. Therefore, the pressure values ​​or time values ​​described above can be adjusted according to actual conditions. This is just an introduction to a method. For example, by controlling the opening time of the gas rupture valve 8 during each liquid pressure-changing pulse cleaning process, the number of bubbles and the intensity of movement generated when the cleaning liquid suddenly boils can be controlled, thereby ensuring that the instrument is not damaged due to excessive stirring and the cleaning ability is effectively guaranteed.

[0114] Example 1

[0115] A multi-stage variable pressure pulse cleaning device: a suction silica gel device 14 is connected to the left pulse valve and the right pulse valve at the left and right ends of the vacuum tank, the left pulse valve and the right pulse valve are respectively connected to the vacuum tank, and the multiple interfaces of the vacuum tank structure are (the first connection port 901, the second connection port 902, the third connection port 903, the fourth connection port 904, and the fifth connection port 905), the vacuum pump exhaust port is connected to the vacuum pump through a one-way valve through the first connection port 901 of the vacuum tank and the exhaust valve through the one-way valve, the vacuum tank 9 second connection port 902 is installed with a filter at the inlet of the tank air valve pipeline, the vacuum tank third connection port 903 is the left pulse valve pipeline, the vacuum tank fourth connection port 904 is the right pulse valve pipeline, and the vacuum tank fifth connection port 905 is the drain valve pipeline. For the cleaning of tubular cavity instruments 4, we first put the object 4 to be cleaned into the vacuum tank 2 as required, close the vacuum tank cover 3, and replenish water to the vacuum tank 2. After the water is replenished to the set water level, the cleaning liquid in the vacuum tank 2 is heated by the heating device 17 at a temperature of 45°C to 55°C. After the temperature reaches the set temperature, the vacuum pump 29 is turned on to cool the solenoid valve 31 to connect the tank extraction valve 33 and the vacuum tank 9. A high negative pressure is formed inside the vacuum tank 9. First, the air rupture valve 8 of the vacuum tank 2 is opened, and then the vacuum tank 9 is opened to connect the left pulse valve 12. Through the pipeline and the silica gel suction device 14 in the vacuum tank 2, the cleaning liquid passes through the object 4 to be cleaned inside the vacuum tank 2 and is directly inserted into the silica gel suction device 14. The inner wall of the object 4 to be cleaned generates a rapid suction pulse into the vacuum tank 9. Close the tank extraction valve 33, open the vacuum extraction valve 6, extract the atmospheric pressure of the vacuum tank 2, open the tank rupture valve 7 and the left pulse valve 12, and the cleaning liquid inside the vacuum tank 9 will backwash to the silica gel suction device 14 and flow out through the inner wall of the object 4 to the vacuum tank 2, forming a left positive pulse and a left reverse pulse. Simultaneously open the vacuum pump 29 cooling solenoid valve 31 to connect the tank extraction valve 33 and the vacuum tank 9, and a high negative pressure will be formed inside the vacuum tank 9. Open the vacuum tank 9 and connect the right pulse valve 15, and attract the silica gel device 14 through the pipeline and the vacuum tank 2. The cleaning liquid will directly enter the silica gel suction device 14 through the object 4 to be cleaned inside the vacuum tank 2, and the inner wall of the object 4 to be cleaned will generate a rapid suction pulse into the vacuum tank 9. Close the tank extraction valve 7, open the vacuum valve 6, extract the atmospheric pressure of the vacuum tank 2, open the tank breaking valve 33 and the right pulse valve 15, and the cleaning liquid inside the vacuum tank 9 will backwash into the vacuum tank 2, forming a right positive pulse and a right reverse pulse. The cleaning liquid on the inner wall of the object 4 to be cleaned will be flushed along the negative pressure suction direction. In this way, a suction left and right multi-stage variable pressure pulse cleaning process is completed. Repeat the above-mentioned gas breaking process 1 to 5 times, which can achieve an excellent cleaning effect on the object 4 to be cleaned.In the process of each time the gas rupture valve 8 is opened to break the gas, the opening time of the gas rupture valve 8 is different. By controlling the opening time, the gas supply volume of each gas rupture is indirectly controlled, so that the impact force and cleaning force of each gas rupture are different, so that the cleaning ability is effectively guaranteed. In the process of extracting multi-stage voltage pulses, a large amount of heat will be consumed and the temperature of the cleaning liquid will be reduced. When the cleaning liquid temperature sensor 18 detects that the temperature drops below the specified minimum temperature during the cleaning process, the heating device 17 will automatically turn on to ensure that the cleaning process can be carried out effectively.

[0116] The above description is only a preferred embodiment of the present invention, which is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-stage variable voltage pulse cleaning device, characterized in that: The utility model mainly comprises a vacuum tank, the vacuum tank is sealed with a vacuum tank cover, a pressure sensor and an air rupture valve are installed on the upper part of the tank body of the vacuum tank, a temperature heater and a temperature sensor are installed on the inner bottom of the vacuum tank, an ultrasonic transducer is installed on the outer bottom of the vacuum tank, the vacuum tank is connected to the vacuum pump exhaust port through pipeline one, a vacuum extraction valve is arranged on the pipeline one, a vacuum tank is arranged between the vacuum tank and the vacuum pump, a tank rupture valve is arranged on the top of the vacuum tank, a tank drainage valve is arranged on the bottom of the vacuum tank, a tank extraction valve is arranged on the connecting pipeline two between the vacuum tank and the vacuum pump, a pipeline three between the vacuum tank and the vacuum tank is respectively connected to the left vacuum tank body and the right vacuum tank body, a left pulse valve and a right pulse valve are respectively arranged on the pipeline three between the vacuum tank and the vacuum tank, the vacuum pump is connected to a cooling tank, the top of the cooling tank is connected to the vacuum pump exhaust port through pipeline five, the bottom of the cooling tank is connected to the vacuum pump water inlet, the upper part of the cooling tank is connected to the cavitation port of the vacuum pump, and the The cooling tank is connected to an external water source, and a drain port and an exhaust port are provided on the cooling tank. The pressure sensor is installed outside the vacuum tank, and the pressure sensor is connected to the vacuum tank through a pipe six. The connection port of the pipe six is ​​above the water level, and the vacuum degree in the vacuum tank is detected by the pressure sensor; a jet device is installed below the temperature heater, and the jet device includes a jet hole, a jet tube, a jet tube drain hole and a jet tube inlet. A jet hole is provided on the jet tube, and the jet tube passes through the tank body and is downwardly connected to a submerged drying valve. The jet tube is provided with a jet tube drain hole. The jet device and the vacuum tank are connected through a pipe seven, and the pipe seven is provided with a submerged jet valve; the submerged drying valve connects the jet device and the external air; the pressure sensor, the gas rupture valve, the temperature heater, the temperature sensor, the ultrasonic transducer, the drain valve, the vacuum valve, the tank rupture valve, the tank drain valve, the tank extraction valve, the submerged jet valve, the submerged drying valve, the left pulse valve and the right pulse valve are all controlled by an integrated control system.

2. The multi-stage variable voltage pulse cleaning device according to claim 1, characterized in that: A vacuum suction device is installed at the entrance of the pipeline three between the vacuum tank and the vacuum tank when they are connected to the left vacuum tank body and the right vacuum tank body respectively. The vacuum suction device includes a vacuum suction movable clamping device and a vacuum suction shunt box. The vacuum suction movable clamping device includes a guide plate, a sleeve plate and a fixed plate. The guide plate is connected to the sleeve plate, the sleeve plate is connected to the fixed plate, the sleeve plate is clamped between the guide plate and the fixed plate, and the fixed plate is provided with an opening; the vacuum suction shunt box includes a box body and a movable joint, the movable joint is a tubular structure, the head side of the movable joint has a chamfered bulging ring structure, one side of the movable joint is just placed in the sleeve plate through the guide plate and is sealed and connected with the opening of the fixed plate; at least one input port is opened on one side of the box body, the other side of the movable joint is connected to the input port of the box body, and at least one output port is opened on the other side of the box body, the output port is installed with a silicone joint, the object to be cleaned is inserted into the silicone joint, so that the cleaning liquid quickly passes through the inner wall of the object to be cleaned.

3. The multi-stage variable voltage pulse cleaning device according to claim 2, characterized in that: A telescopic tubular interface is installed in the opening on the fixed plate. A spring is installed inside the fixed plate. One side of the spring is sleeved inside the tubular interface. A ring is sleeved outside the tubular interface. The ring is threadedly connected to the opening on the fixed plate. When the movable joint is placed into the sleeve plate, the tubular interface is pressed to retract into the opening. When the movable joint is taken out, under the action of the elastic force, the tubular interface slightly pops out of the opening.

4. The multi-stage variable voltage pulse cleaning device according to claim 1, characterized in that: The jet holes are round holes with a diameter of Ø1 to Ø3 mm, and the distance interval is 30 to 50 mm. The jet holes open upward.

5. The multi-stage variable voltage pulse cleaning device according to claim 1, characterized in that: The number of inlets when the pipeline three between the vacuum tank and the vacuum groove is respectively connected to enter the left vacuum tank body and the right vacuum tank body is n, and n is greater than or equal to 1.

6. The multi-stage variable voltage pulse cleaning device according to claim 1, characterized in that: The jet pipe is in the shape of "out" or honeycomb.

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