Filling suction device and filling suction method

Abstract

The present invention relates to the technical field of material filling equipment, and discloses a filling and suction device and a filling and suction method. The filling and suction device includes a material collection tank, a compressed gas valve, a vacuum valve, an exhaust valve, and a plurality of filling and suction components. The material collection tank includes a gas chamber and a material chamber that are interconnected; the gas chamber is connected to a compressed gas system through a compressed gas valve, so that the pressure of the gas chamber is greater than the atmospheric pressure; the gas chamber is connected to a vacuum system through a vacuum valve, so that the pressure of the gas chamber is less than the atmospheric pressure; the gas chamber is connected to the outside atmosphere through an exhaust valve, so that the pressure of the gas chamber is equal to the atmospheric pressure; the filling and suction components are used to connect containers to be filled or to be suctioned. The filling and suction device integrates the filling and suction of materials, realizes the precise filling of materials, greatly reduces the waste of materials, and can also fill and suction multiple containers at the same time, improving the efficiency of filling and suction. At the same time, the device is simple to operate and easy to use.

Description

Technical Field

[0001] The present invention relates to the technical field of material filling equipment, and in particular to a filling suction device and a filling suction method. Background Art

[0002] In modern society, many products are packaged, circulated and sold in liquid or semi-liquid state. The filling of liquid materials is usually called filling. The various liquid materials that need to be filled have different physical and chemical properties, such as viscosity, volatility, fluidity, and gas content. Due to the differences in the properties of the materials, there are also different requirements for filling equipment. In order to ensure that the volume of liquid materials in each bottle is sufficient, the existing filling equipment often adopts the means of overfilling, but this method is prone to overflow and leakage of liquid materials, which increases the filling cost and generates waste.

[0003] The Chinese utility model (publication number CN205367689U) discloses a filling piston device, including a power unit, a cylinder, a piston, and a three-way valve. The piston includes a piston head and a piston rod. The piston head is driven by the piston rod to reciprocate in the cylinder. When the piston and the power unit are linked upward, the fluid flows into the cylinder from the external feeding device through the three-way valve; when the piston is linked downward, the fluid in the cylinder is filled into the target bottle through the three-way valve. By adjusting the stroke adjustment device, the active stroke length of the piston in the cylinder can be adjusted, so as to quantitatively control the volume of the fluid flowing into the cylinder, so as to achieve the effect of adjusting the volume of the fluid filled into the bottle. However, the piston filling machine needs to extract the material into the cylinder first, and then pressurize the piston to drive the material into the container to be filled, so that a piston filling machine cannot fill materials into multiple containers at the same time. Moreover, the filling volume is quantitatively controlled by adjusting the stroke length of the piston, which has low accuracy and poor reliability. Especially in the production of electronic equipment, for some workpieces (or containers) with a volume of less than 1 ml, it is even impossible to achieve reasonable filling. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The object of the present invention is to provide a filling and suction device with high production efficiency and simple structure, so as to solve the problem that the existing filling equipment cannot fill or suction multiple containers at the same time.

[0006] Another object of the present invention is to provide a filling and suction method using the above-mentioned filling and suction device to efficiently, accurately and batch-wise fill or suction materials into containers.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the present invention provides a filling and suction device, including a material collection tank, a compressed gas valve, a vacuum valve, an exhaust valve and a plurality of filling and pumping components, the material collection tank includes a gas chamber and a material chamber that are interconnected; the gas chamber is connected to a compressed gas system through the compressed gas valve so that the pressure of the gas chamber is greater than the atmospheric pressure; the gas chamber is connected to a vacuum system through the vacuum valve so that the pressure of the gas chamber is less than the atmospheric pressure; the gas chamber is connected to the outside atmosphere through the exhaust valve so that the pressure of the gas chamber is equal to the atmospheric pressure; the filling and pumping components are used to connect containers to be filled or to be pumped.

[0009] Among them, the filling and pumping assembly includes a filling and pumping device, a filling valve and a suction valve, and the filling and pumping device is provided with a filling port, a suction port and a filling and pumping port; the filling port is connected to the filling valve and is connected to the material chamber through the filling valve; the suction port is connected to the suction valve and is connected to the gas chamber through the suction valve; the filling and pumping port is used to connect a container to be filled or to be pumped.

[0010] Wherein, the irrigation and pumping assembly further comprises an irrigation and pumping valve, one end of which is connected to the irrigation and pumping port, and the other end of which is used to connect to the container.

[0011] Wherein, one end of the filling and pumping valve used for connecting to the container is also connected to a flow meter.

[0012] Among them, the compressed gas valve, the vacuum valve, the exhaust valve, the filling valve, the suction valve and the filling and pumping valve are one or more of electric valves, pneumatic valves or solenoid valves; the compressed gas valve, the vacuum valve, the exhaust valve, the filling valve, the suction valve and the filling and pumping valve are all electrically connected to a controller.

[0013] Wherein, the filling and suction device further comprises a material level monitor, and the material level monitor is used to monitor the material level in the container.

[0014] Wherein, the material level monitor includes a material level sensor and / or a camera.

[0015] Wherein, a pressure gauge and a vacuum gauge are provided on the gas chamber.

[0016] Wherein, the aggregate tank is provided with an openable and closable feed port.

[0017] The present invention also provides a filling and suction method using the above filling and suction device, including a filling control mode and a suction control mode;

[0018] The filling control mode includes:

[0019] closing the vacuum valve, the exhaust valve and the suction valve;

[0020] Starting the compressed gas system, opening the compressed gas valve and the filling valve, and allowing the compressed gas to enter the gas chamber through the compressed gas valve, so that the pressure of the gas chamber is greater than the atmospheric pressure;

[0021] The material in the material chamber enters the container through the filling valve;

[0022] When the material level in the container reaches a preset value, closing the compressed gas valve and the filling valve;

[0023] The suction control mode includes:

[0024] The compressed gas valve and the filling valve are closed, and the exhaust valve is opened, so that the compressed gas flows from the gas chamber to the outside atmosphere, so that the pressure of the gas chamber is equal to the atmospheric pressure;

[0025] When the pressure of the gas chamber is equal to the atmospheric pressure, closing the exhaust valve;

[0026] Starting the vacuum system, opening the vacuum valve and the suction valve, and allowing the gas in the gas chamber to enter the vacuum system through the vacuum valve, so that the pressure in the gas chamber is lower than the atmospheric pressure;

[0027] The material in the container enters the gas chamber through the suction valve and flows into the material chamber;

[0028] When the material level in the container reaches a preset value, the vacuum valve and the suction valve are closed.

[0029] (III) Beneficial effects

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] The present invention provides a filling and suction device, including a collecting tank with a gas chamber and a material chamber that are interconnected, and a plurality of filling and suction components for filling and suctioning containers. The gas chamber is connected to a compressed gas system through a compressed gas valve so that the pressure of the gas chamber is greater than the atmospheric pressure, which is used to press the material into the container; then the gas chamber is connected to the outside atmosphere through an exhaust valve so that the pressure of the gas chamber is equal to the atmospheric pressure, which is used to replenish the material or prepare for the suction process; then the gas chamber is connected to a vacuum system through a vacuum valve so that the pressure of the gas chamber is less than the atmospheric pressure, which is used to suck out the excess material in the container to achieve precise filling, or to suck out all the material in the container to achieve material recovery. The filling and suction device integrates the filling and suction of materials, realizes the precise filling of materials, greatly reduces the waste of materials, and can also fill or suck multiple containers at the same time, improving the efficiency of filling and suction. At the same time, the device is simple to operate and easy to use.

[0032] The present invention provides a filling and suction method using the filling and suction device, which realizes the continuous operation of material filling and suction. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a structural schematic diagram of a filling and suction device in an embodiment of the present invention;

[0034] Description of reference numerals:

[0035] 1: Aggregate tank; 11: Gas chamber; 12: Material chamber;

[0036] 2: Compressed gas valve; 3: Vacuum valve; 4: Exhaust valve;

[0037] 5-1: first filling and pumping assembly; 51: filling valve; 52: suction valve;

[0038] 53: Material level monitor; 54: Filling and pumping valve; 55: Flow meter;

[0039] 56: irrigation and pumping device; 5-2: second irrigation and pumping assembly; 6-1: first container;

[0040] 6-2: Second container; 7: Pressure gauge; 71: Root valve of pressure gauge;

[0041] 8: Vacuum gauge; 81: Vacuum gauge root valve; 9: Feed inlet. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the invention clearer, the technical solution in the invention will be clearly described below in conjunction with the drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the invention, not all of them. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "first", "second", etc. are for the purpose of clearly explaining the numbering of product components and do not represent any substantial difference. "Up" and "down" are subject to the directions shown in the accompanying drawings. "Top" and "bottom" are subject to the conventional understanding of product structure. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] It should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0045] Furthermore, in the description of the present invention, unless otherwise specified, “plurality”, “multiple roots”, and “multiple groups” mean two or more.

[0046] Figure 1 is a structural schematic diagram of a filling and suction device in an embodiment of the present invention, such as Figure 1 As shown, a filling and suction device provided by an embodiment of the present invention includes a collection tank 1, a compressed gas valve 2, a vacuum valve 3, an exhaust valve 4 and a plurality of filling and suction components. The number of filling and suction components can be two or more. In this embodiment, two filling and suction components are used as an example for explanation, namely, a first filling and suction component 5-1 and a second filling and suction component 5-2. The collection tank 1 is a closed pressure-bearing tank body, and its shape and volume can be reasonably designed according to the fillable volume of the container to be filled and the number of containers that need to be filled at the same time. The collection tank 1 can be made of hard materials such as stainless steel and is not easy to deform. The internal chamber of the collection tank 1 includes a gas chamber 11 and a material chamber 12 that are interconnected. The gas chamber 11 is located above the material chamber 12, and the volumes of the two change with the height of the material. The air pressure in the gas chamber 11 is adjustable and can be different according to different filling or suction modes.

[0047] The gas chamber 11 is connected to a compressed gas system (not shown in the figure) through a compressed gas valve 2 so that the pressure of the gas chamber 11 is greater than the atmospheric pressure. The compressed gas system can provide compressed gas to the gas chamber 11 for pressing the material into the container to be filled. Specifically, the compressed gas system includes an air compressor, a gas storage tank, a filter and related valves. The outside air is compressed into compressed gas in the air compressor, and the compressed gas with a pressure higher than the atmospheric pressure is stored in the gas storage tank, so that the impurities in the air can settle in the gas storage tank, and then most of the water, oil and dust are separated. When compressed gas is needed, the gas supply valve is opened, and the compressed gas is further cleared of water, oil and dust after passing through the filter, and finally enters the gas chamber 11 through the compressed gas valve 2. If a centralized compressed gas system is configured in the factory area, the existing compressed gas system can be directly used. In addition, for some materials that are easy to deteriorate or have high requirements for cleanliness, the compressed gas system can also be directly connected to a high-pressure gas cylinder for gas supply.

[0048] At the same time, the gas chamber 11 is also connected to a vacuum system (not shown in the figure) through a vacuum valve 3, so that the pressure of the gas chamber 11 is less than the atmospheric pressure. The vacuum system extracts the gas in the gas chamber 11 to achieve negative pressure, which is used to suck the material out of the filled container. Specifically, the vacuum system includes a vacuum pump, an air intake filter and related valves. Under the action of the vacuum pump, the gas in the gas chamber 11 is extracted through the vacuum valve 3, and the water, oil and dust in the extracted gas are removed through the air intake filter before entering the vacuum pump. If a centralized vacuum system is configured in the factory area, the existing vacuum system can be directly used.

[0049] In addition, the gas chamber 11 is also connected to the outside atmosphere through the exhaust valve 4 so that the pressure of the gas chamber 11 is equal to the atmospheric pressure. When it is necessary to add materials to the aggregate tank 1, the exhaust valve 4 is opened so that the materials can smoothly enter the material chamber 12. After the filling process is completed, the exhaust valve 4 is opened so that the pressure of the gas chamber 11 is equal to the atmospheric pressure, which can prevent the aggregate tank 1 from being in a pressurized state when it stops working. Or before the suction process starts, the exhaust valve 4 also needs to be opened to speed up the establishment of the vacuum state.

[0050] like Figure 1 As shown, the structures and components of the first filling and pumping assembly 5-1 and the second filling and pumping assembly 5-2 are the same. The first filling and pumping assembly 5-1 is used to fill or pump the first container 6-1, and the second filling and pumping assembly 5-2 is used to fill or pump the second container 6-2. The filling and pumping assembly includes a filling and pumping device 56, a filling valve 51 and a suction valve 52. The filling and pumping device 56 is provided with a filling port, a suction port and a filling and pumping port. The filling port is connected to the material chamber 12 through a filling pipeline, and the filling valve 51 is arranged on the filling pipeline. The filling valve 51 is used to adjust and control the filling process. The suction port is connected to the gas chamber 11 through a suction pipeline, and the suction valve 52 is arranged on the suction pipeline. The suction process is adjusted and controlled by the suction valve 52. The filling and pumping port extends into the bottom space of the container to be filled, and is used to fill the material into it or to pump the material out of the container. Specifically, the filling and pumping device 56 in this embodiment adopts a three-way.

[0051] The present invention provides a filling and suction device, including a collecting tank with a gas chamber and a material chamber that are interconnected, and a plurality of filling and suction components for filling and suctioning containers. The gas chamber is connected to a compressed gas system through a compressed gas valve so that the pressure of the gas chamber is greater than the atmospheric pressure, which is used to press the material into the container; then the gas chamber is connected to the outside atmosphere through an exhaust valve so that the pressure of the gas chamber is equal to the atmospheric pressure, which is used to replenish the material or prepare for the suction process; then the gas chamber is connected to a vacuum system through a vacuum valve so that the pressure of the gas chamber is less than the atmospheric pressure, which is used to suck out the excess material in the container to achieve precise filling, or to suck out all the material in the container to achieve material recovery. The filling and suction device integrates the filling and suction of materials, realizes the precise filling of materials, greatly reduces the waste of materials, and can also fill or suction multiple containers at the same time, improving the efficiency of filling or suction. At the same time, the device is simple to operate and easy to use.

[0052] Furthermore, the filling and suction device further includes a material level monitor 53, which faces the container. The material level monitor is mounted and fixed on a container positioning bracket (not shown in the figure). The container positioning bracket can be a mesh frame or a porous plate, and a filling and suction component positioning bracket that matches the container positioning bracket can also be provided to simultaneously fill materials into multiple containers or simultaneously suck materials from multiple containers. The material level monitor 53 is used to monitor the material level in the container to control the height of the material in the container and prevent the material from overflowing from the container.

[0053] Furthermore, the material level monitor may use a material level sensor, such as an ultrasonic material level meter, a laser material level meter, a radar material level meter or other non-contact material level meter, which can avoid contamination of the material and is easier to install and replace.

[0054] In addition, the material level monitor can use a camera to record the material level changes in the container in real time, and multiple containers can share one camera, which improves the visualization performance of the device.

[0055] Furthermore, if Figure 1 As shown, the filling and pumping assembly also includes a filling and pumping valve 54, the upper end of the filling and pumping valve 54 is connected to the filling and pumping port, and the lower end of the filling and pumping valve 54 is connected to the container. By controlling the opening and closing and the opening degree of the filling and pumping valve, the rate of the filling and pumping process can be controlled, as well as the filling amount or the pumping amount.

[0056] Furthermore, the filling and pumping valve 54 is connected to the container through the filling and pumping pipeline, and a flow meter 55 is also provided on the filling and pumping pipeline. The flow meter 55 is used to control the volume of the material filled into the container. Specifically, the flow meter 55 includes a volumetric flow meter with high measurement accuracy. Other types of flow meters, such as electromagnetic flow meters, etc., can also be used. The size and length of the filling and pumping pipeline need to be designed according to factors such as the volume and height of the container, the nature of the material, and the set filling time. In particular, for containers (or workpieces) with a volume of less than 1 ml, a filling and pumping pipeline with a small diameter can be designed to achieve quantitative filling or suction.

[0057] More specifically, when both the material level monitor 53 and the flow meter 55 can operate normally, the material level height value measured by the material level monitor 53 and the flow value measured by the flow meter 55 can verify each other, thereby improving the control accuracy of the filling amount. When one (or one) of the two measuring instruments, the material level monitor 53 and the flow meter 55, is damaged, the normal operation of the other (or one) measuring instrument can also ensure the normal operation of the entire device, thereby improving the reliability of the device.

[0058] Furthermore, a pressure gauge 7 and a vacuum gauge 8 are provided on the gas cavity 11. The pressure gauge 7 is used to monitor the relative pressure of the gas cavity 11 in the aggregate tank 1, that is, the pressure value greater than the atmospheric pressure. The pressure gauge 7 is arranged at the top of the aggregate tank 1. A pressure gauge root valve 71 is also provided on the pipeline connecting the pressure gauge 7 to the gas cavity 11. When the material is sucked, the pressure gauge root valve 71 is closed to prevent the pressure gauge 7 from being damaged or failing. Specifically, the pressure gauge 7 can adopt an on-site pressure dial to facilitate on-site observation by the operator. The pressure gauge 7 can also adopt a pressure transmitter to facilitate remote and automatic control of pressure. In addition, two instruments can be used at the same time to improve reliability.

[0059] The vacuum gauge 8 is used to detect the vacuum degree of the gas cavity 11 in the aggregate tank 1, and the vacuum gauge 8 is also arranged on the top of the aggregate tank 1. A vacuum gauge root valve 81 is also provided on the pipeline connecting the vacuum gauge 8 to the gas cavity 11. When filling the material, the vacuum gauge root valve 81 is closed to prevent the vacuum gauge 8 from being damaged or failing under the relative pressure. Specifically, the vacuum gauge 8 can adopt an on-site vacuum gauge and / or a vacuum sensor. In addition, a pressure-vacuum gauge can also be used, which can measure both relative pressure and vacuum degree.

[0060] Furthermore, the collecting tank 1 is provided with an openable and closable feed port 9. The feed port 9 is used to replenish materials and needs to be closed during the operation of the device to establish a pressure chamber or a vacuum chamber. The feed port 9 can be set on the gas chamber 11 or on the material chamber 12.

[0061] Further, the compressed gas valve 2, vacuum valve 3, exhaust valve 4, filling valve 51, suction valve 52 and filling and suction valve 54 are one or more of electric valves, pneumatic valves or solenoid valves. Here, it is indicated that the above valves can use electric valves, pneumatic valves, or solenoid valves at the same time; it can also be that the compressed gas valve 2, vacuum valve 3, exhaust valve 4, filling and suction valve 54 use electric valves, and the filling valve 51 and suction valve 52 use solenoid valves. The specific valve type can be selected according to the actual control requirements. The electric valve has a higher cost, but is easy to control; the pneumatic valve acts quickly, but requires an air path; the solenoid valve is mainly used as a switch valve, which has a fast switching action, but cannot realize the adjustment function. The compressed gas valve 2, vacuum valve 3, exhaust valve 4, filling valve 51, suction valve 52 and filling and suction valve 54 are all electrically connected to the controller (not shown in the figure). The controller can use a programmable logic controller (PLC) or a distributed control system (DCS).

[0062] The present invention also provides a filling and suction method using the above filling and suction device, including a filling control mode and a suction control mode:

[0063] Filling control modes include:

[0064] Close the vacuum valve 3, exhaust valve 4 and suction valve 52;

[0065] Start the compressed gas system, open the compressed gas valve 2 and the filling valve 51, and the compressed gas enters the gas chamber 11 through the compressed gas valve 2, so that the pressure of the gas chamber 11 is greater than the atmospheric pressure;

[0066] The material in the material chamber 12 enters the container through the filling valve 51;

[0067] When the material level in the container reaches a preset value, the compressed gas valve 2 and the filling valve 51 are closed;

[0068] Suction control modes include:

[0069] Close the compressed gas valve 2 and the filling valve 51, open the exhaust valve 4, and allow the compressed gas to flow from the gas chamber 11 to the outside atmosphere, so that the pressure in the gas chamber 11 is equal to the atmospheric pressure;

[0070] When the pressure of the gas chamber 11 is equal to the atmospheric pressure, the exhaust valve 4 is closed;

[0071] Start the vacuum system, open the vacuum valve 3 and the suction valve 52, and the gas in the gas chamber 11 enters the vacuum system through the vacuum valve 3, so that the pressure of the gas chamber 11 is lower than the atmospheric pressure;

[0072] The material in the container enters the gas chamber 11 through the suction valve 52 and flows into the material chamber 12;

[0073] When the material level in the container reaches a preset value, the vacuum valve 3 and the suction valve 52 are closed.

[0074] Furthermore, the PLC or DCS system can also control the opening and closing of the compressed gas valve 2, the vacuum valve 3, the exhaust valve 4, the filling valve 51 and the suction valve 52 according to the height of the material level in the container measured by the material level monitor 53 and the filling amount measured by the flow meter 55, and control the opening and closing and opening degree of the filling and suction valve 54, thereby realizing the mode switching of the filling and suction device and achieving precise filling or suction of the container.

[0075] The filling and pumping method in this embodiment is further described below in conjunction with a specific working process.

[0076] Before work, open the exhaust valve 4 and load a proper amount of material into the collecting tank 1 through the feed inlet 9.

[0077] During operation, when it is necessary to fill materials into the container, close the vacuum valve 3, the exhaust valve 4, and the suction valve 52; if a vacuum gauge 8 and a vacuum gauge root valve 81 are provided, the vacuum gauge root valve 81 also needs to be closed; open the compressed gas valve 2, the pressure gauge root valve 71, the filling valve 51 and the filling and pumping valve 54, and turn on the material level monitor 53; use the pressure generated by the compressed gas to fill the material in the collecting tank 1 into the container; when the material level in the container reaches the set value, close the filling and pumping valve 54, the compressed gas valve 2, and the filling valve 51, and stop filling the material.

[0078] When it is necessary to extract the material in the container, close the compressed gas valve 2 and open the exhaust valve 4 to discharge the gas in the aggregate tank 1; when the pressure in the aggregate tank 1 drops to atmospheric pressure, close the exhaust valve 4, the filling valve 51 and the root valve 71 of the pressure gauge; open the vacuum valve 3, the suction valve 52 and the filling and extraction valve 54; if a vacuum gauge 8 and a vacuum gauge root valve 81 are provided, the vacuum gauge root valve 81 must also be opened; utilize the pressure difference between the atmospheric pressure and the vacuum degree in the aggregate tank 1 to suck the material in the container into the aggregate tank 1; when the material in the container is completely sucked out, close the vacuum valve 3, the filling and extraction valve 54 and the suction valve 52 to stop sucking the material.

[0079] It can be seen from the above embodiments that the filling and suction device provided by the present invention includes a collecting tank having a gas chamber and a material chamber that are interconnected, and a plurality of filling and suction components for filling and suctioning containers. The gas chamber is connected to a compressed gas system through a compressed gas valve so that the pressure of the gas chamber is greater than the atmospheric pressure, which is used to press the material into the container; then the gas chamber is connected to the outside atmosphere through an exhaust valve so that the pressure of the gas chamber is equal to the atmospheric pressure, which is used to replenish the material or prepare for the suction process; then the gas chamber is connected to a vacuum system through a vacuum valve so that the pressure of the gas chamber is less than the atmospheric pressure, which is used to suck out the excess material in the container to achieve precise filling, or to suck out all the material in the container to achieve material recovery. The filling and suction device integrates the filling and suction of materials, realizes the precise filling of materials, greatly reduces the waste of materials, and can also fill and suction multiple containers at the same time, improving the efficiency of filling and suction. At the same time, the device is simple to operate and easy to use.

[0080] The present invention provides a filling and suction method using the filling and suction device, which realizes the continuous operation of material filling and suction.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A filling and suction method using a filling and suction device, characterized in that: The filling and suction device comprises a material collection tank, a compressed gas valve, a vacuum valve, an exhaust valve and a plurality of filling and suction components. The material collection tank comprises a gas chamber and a material chamber which are interconnected; the gas chamber is connected to a compressed gas system through the compressed gas valve so that the pressure of the gas chamber is greater than the atmospheric pressure; the gas chamber is connected to a vacuum system through the vacuum valve so that the pressure of the gas chamber is less than the atmospheric pressure; the gas chamber is connected to the outside atmosphere through the exhaust valve so that the pressure of the gas chamber is equal to the atmospheric pressure; the filling and suction components are used to connect the container to be filled or to be suctioned; The filling and pumping assembly includes a filling and pumping device, a filling valve and a suction valve. The filling and pumping device is provided with a filling port, a suction port and a filling and pumping port; the filling port is connected to the filling valve and communicates with the material chamber through the filling valve; the suction port is connected to the suction valve and communicates with the gas chamber through the suction valve; the filling and pumping port is used to connect a container to be filled or pumped; The filling and suction method includes a filling control mode and a suction control mode; The filling control mode includes: closing the vacuum valve, the exhaust valve and the suction valve; Starting the compressed gas system, opening the compressed gas valve and the filling valve, and allowing the compressed gas to enter the gas chamber through the compressed gas valve, so that the pressure of the gas chamber is greater than the atmospheric pressure; The material in the material chamber enters the container through the filling valve; When the material level in the container reaches a preset value, closing the compressed gas valve and the filling valve; The suction control mode includes: The compressed gas valve and the filling valve are closed, and the exhaust valve is opened, so that the compressed gas flows from the gas chamber to the outside atmosphere, so that the pressure of the gas chamber is equal to the atmospheric pressure; When the pressure of the gas chamber is equal to the atmospheric pressure, closing the exhaust valve; Starting the vacuum system, opening the vacuum valve and the suction valve, and allowing the gas in the gas chamber to enter the vacuum system through the vacuum valve, so that the pressure in the gas chamber is lower than the atmospheric pressure; The material in the container enters the gas chamber through the suction valve and flows into the material chamber; When the material level in the container reaches a preset value, the vacuum valve and the suction valve are closed.

2. The filling and suction method using the filling and suction device according to claim 1, characterized in that: The irrigation and pumping assembly further comprises an irrigation and pumping valve, one end of which is connected to the irrigation and pumping port, and the other end of which is used to connect to the container.

3. The filling and suction method using the filling and suction device according to claim 2, characterized in that: One end of the filling and pumping valve used for connecting to the container is also connected to a flow meter.

4. The filling and suction method using the filling and suction device according to claim 2, characterized in that: The compressed gas valve, the vacuum valve, the exhaust valve, the filling valve, the suction valve and the filling and pumping valve are one or more of electric valves, pneumatic valves or solenoid valves; the compressed gas valve, the vacuum valve, the exhaust valve, the filling valve, the suction valve and the filling and pumping valve are all electrically connected to a controller.

5. The filling and suction method using a filling and suction device according to claim 1, characterized in that: Also included is a material level monitor, which is used to monitor the material level in the container.

6. The filling and suction method using the filling and suction device according to claim 5, characterized in that: The material level monitor includes a material level sensor and / or a camera.

7. The filling and suction method using a filling and suction device according to claim 1, characterized in that: The gas chamber is provided with a pressure gauge and a vacuum gauge.

8. The filling and suction method using a filling and suction device according to claim 1, characterized in that: The aggregate tank is provided with an openable and closable feed port.

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