Reusable vacuum container

Abstract

The utility model discloses a reusable vacuum container, which comprises a volume-variable container, a pump, a reversing valve, a fixed liquid outlet nozzle and a fixed liquid inlet nozzle, and is characterized in that the reversing valve is provided with a liquid inlet / outlet, a first liquid outlet, a second liquid outlet, a first liquid inlet and a second liquid inlet; a flow channel in the reversing valve is switched in a manner that when liquid is taken, the first liquid inlet is communicated with the first liquid outlet and is cut off from the liquid inlet and outlet, and the second liquid outlet is communicated with the liquid inlet and outlet and is cut off from the second liquid inlet; when liquid is supplemented, the first liquid inlet is communicated with the liquid inlet and outlet and is cut off from the first liquid outlet, and the second liquid outlet is communicated with the second liquid inlet and is cut off from the liquid inlet and outlet. Due to the fact that the vacuum container is provided with the pump and the reversing valve, and the reversing valve can change the flow direction of the pumped fluid, the fluid can be pumped out of the vacuum container and can also be pumped into the vacuum container, and the purpose that the vacuum container can be refilled with the fluid to be reused is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of containers for storing fluids, in particular to a vacuum container without air backflow. Background Art

[0002] Vacuum containers are characterized by preventing air from flowing back into the container after liquid is removed, preventing the stored fluid from coming into contact with recirculating air. They are often used for packaging food and daily chemical products, storing fluids that are susceptible to deterioration when exposed to air. Currently, the most common vacuum containers on the market are variable-volume bottles with lotion pumps and bags with one-way valves at the liquid outlet. Both types of vacuum containers are single-use in daily use. Once the stored fluid is completely removed, they cannot be refilled for reuse, resulting in significant waste and polluting the environment. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a vacuum container which can be refilled with fluid and reused.

[0004] The technical solution adopted to solve the above technical problems is: a reusable vacuum container, including a container with variable volume, a pump, a reversing valve, and a fixed liquid outlet and liquid inlet, characterized in that: the reversing valve has an inlet and outlet, a first liquid outlet, a second liquid outlet, a first liquid inlet and a second liquid inlet, the inlet and outlet are connected to the container port, the first liquid outlet is connected to the liquid outlet nozzle pipe, the second liquid outlet is connected to the suction inlet pipe of the pump, the first liquid inlet is connected to the pump outlet pipe of the pump, and the second liquid inlet is connected to the liquid inlet nozzle pipe, the flow channel switching in the reversing valve is set to be connected with the first liquid outlet and cut off from the inlet and outlet when taking liquid, and the second liquid outlet is connected with the inlet and outlet and cut off from the second liquid inlet; and when replenishing liquid, the first liquid inlet is connected with the inlet and outlet and cut off from the first liquid outlet, and the second outlet is connected with the second liquid inlet and cut off from the inlet and outlet.

[0005] On the basis of the above, the reversing valve includes a valve body forming a first liquid inlet, a second liquid outlet and a second liquid inlet, and the second liquid outlet and the second liquid inlet are respectively arranged on both sides of the same position of the valve body, and a sliding and sealing valve core is installed in the valve cavity of the valve body, and the liquid inlet and outlet and the first liquid outlet are respectively arranged at both ends of the valve core, and two mutually isolated first flow channels connecting the first liquid outlet and the second flow channel connecting the inlet and outlet are formed in the valve core, and the side wall of the valve core forms a first opening connecting the first liquid inlet and the first flow channel when the valve core slides to the liquid extraction position and a second opening connecting the second liquid outlet and the second flow channel, and a third opening connecting the first liquid inlet and the second flow channel when the valve core slides to the liquid replenishing position, and the valve core forms a through groove on the outer wall of the second flow channel connecting the second liquid outlet and the second liquid inlet when the valve core slides to the liquid replenishing position.

[0006] On the basis of the above, a top cover is further included to fix the liquid outlet nozzle and the liquid inlet nozzle, and a flip cover is hinged to the top cover to control the switching of the flow channel of the reversing valve.

[0007] On the basis of the above, the reversing valve is provided with a spring to keep the liquid supplementing state, and the flip cover is closed to drive the reversing valve to switch to the liquid taking state.

[0008] On the basis of the above, the pump is a diaphragm pump.

[0009] On the basis of the above, the diaphragm pump comprises a valve seat, a one-way valve flap, a diaphragm, a pressing base, a rocker, a crank and a motor, the valve seat is centrally formed with a liquid outlet cavity connected with a pump outlet and a liquid inlet cavity connected with a suction inlet around the liquid outlet cavity, a valve port for mounting the one-way valve flap is formed on the top wall of the liquid inlet cavity, the diaphragm is formed with a bulging part abutting against the valve port and a plug part plugging the liquid outlet cavity, the diaphragm is clamped between the pressing base and the valve seat, the central part of the pressing base corresponding to the plug part is kept at a distance from the plug part, one end of the rocker is connected with the central part in a universal manner, the other end of the rocker is connected with the crank in a universal manner, the rocker is formed with a pressing head for pressing the bulging part, and the crank is drivingly connected with the motor.

[0010] On the basis of the above, the liquid inlet cavity is arranged in a ring shape, and the valve port, the one-way valve flap, the bulging part and the pressing head are evenly arranged in three groups along the liquid inlet cavity.

[0011] On the basis of the above, a pressure sensor for controlling the pump is mounted on the connecting pipeline between the first liquid inlet and the pump outlet.

[0012] On the basis of the above, a hard shell is mounted outside the container.

[0013] The beneficial effects brought by the utility model are as follows: since the pump and the reversing valve are mounted on the vacuum container, the reversing valve can change the flow direction of the pumped fluid, so that the fluid can be pumped out of the vacuum container and pumped into the vacuum container, and the purpose of repeatedly using the vacuum container by refilling fluid is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the reusable vacuum container of the utility model;

[0015] Figure 2 It is a sectional structure schematic view of the reusable vacuum container of the utility model;

[0016] Figure 3 It is a sectional structure schematic view of the liquid taking state of the reversing valve in the utility model;

[0017] Figure 4 It is a sectional structure schematic view of the liquid supplementing state of the reversing valve in the utility model;

[0018] Figure 5This is a schematic diagram of the cross-sectional structure of the pump in the utility model;

[0019] Figure 6 It is a structural diagram of the utility model when the flip cover is opened. DETAILED DESCRIPTION

[0020] like Figure 1-6 As shown, a reusable vacuum container comprises a variable-volume container 1, a pump 2, a reversing valve 3, and fixed liquid outlets 4 and inlet 5. The variable-volume container 1 can be a common hose-type packaging container, or other less common non-hose variable-volume containers. The pump 2 can be a conventional micropump suitable for everyday use, such as a diaphragm pump. In the present invention, the reversing valve 3 has a liquid inlet and outlet 3.1, a first liquid outlet 3.2, a second liquid outlet 3.3, a first liquid inlet 3.4, and a second liquid inlet 3.5. Among them, the liquid inlet and outlet 3.1 is connected to the container port of the container 1, the first liquid outlet 3.2 is connected to the liquid outlet nozzle 4 through a pipe, the second liquid outlet 3.3 is connected to the suction inlet 2.1 of the pump 2 through a pipe, the first liquid inlet 3.4 is connected to the pump outlet 2.2 of the pump 2 through a pipe, and the second liquid inlet 3.5 is connected to the liquid inlet nozzle 5 through a pipe. The flow channel switching in the reversing valve 3 is set so that when liquid is taken out, the first liquid inlet 3.4 is connected to the first liquid outlet 3.2 and cut off from the liquid inlet and outlet 3.1, and the second liquid outlet 3.3 is connected to the liquid inlet and outlet 3.1 and cut off from the second liquid inlet 3.5; and when liquid is replenished, the first liquid inlet 3.4 is connected to the liquid inlet and outlet 3.1 and cut off from the first liquid outlet 3.2, and the second liquid outlet 3.3 is connected to the second liquid inlet 3.5 and cut off from the liquid inlet and outlet 3.1.

[0021] During routine liquid withdrawal, the reversing valve 3 is switched to the liquid withdrawal state. At this point, the first liquid inlet 3.4 is connected to the first liquid outlet 3.2, and the second liquid outlet 3.3 is connected to the liquid inlet and outlet 3.1. Pump 2 is then started, and the fluid in container 1 is drawn into pump 2 through liquid inlet and outlet 3.1 and the second liquid outlet 3.3, and then pumped out of outlet nozzle 4 through the first liquid inlet 3.4 and the first liquid outlet 3.2. When the fluid in container 1 is depleted, it is necessary to refill container 1. The reversing valve 3 is switched to the refill state. At this point, the first liquid inlet 3.4 is connected to the liquid inlet and outlet 3.1, and the second liquid outlet 3.3 is connected to the second liquid inlet 3.5. Pump 2 is then started, and the refilled fluid is drawn into pump 2 through the liquid inlet nozzle 5, the second liquid inlet 3.5, and the second liquid outlet 3.3, and then pumped into container 1 through the first liquid inlet 3.4 and the liquid inlet and outlet 3.1.

[0022] A conventional, optimal design emphasizes the integrity of the product. Therefore, the pump 2, reversing valve 3, and connecting pipes are all mounted on top of the screw cap 1.1 of the container 1, enclosing a housing (a common component, not shown). A top cover 6 is placed on top of the housing, and the liquid outlet nozzle 4 and liquid inlet nozzle 5 are fixed to this top cover 6. Accordingly, the liquid inlet and outlet ports 3.1 of the reversing valve 3 are connected to the screw cap 1.1, communicating with the interior of the container 1. These ports can also be connected to a conduit 7 extending from the bottom of the container 1, facilitating fluid aspiration.

[0023] In this embodiment, the reversing valve 3 includes a valve body 3.6 forming a first liquid inlet 3.4, a second liquid outlet 3.3, and a second liquid inlet 3.5. The second liquid outlet 3.3 and the second liquid inlet 3.5 are respectively arranged on either side of the same position of the valve body 3.6. A valve core 3.7 is installed in the valve cavity of the valve body 3.6 so as to slide and seal together. The liquid inlet and outlet 3.1 and the first liquid outlet 3.2 are respectively arranged at both ends of the valve core 3.7. Two mutually isolated first flow channels 3.8 connected to the first liquid outlet 3.2 and a second flow channel 3.9 connected to the liquid inlet and outlet 3.1 are formed in the valve core 3.7. The second flow channel 3.9 has a first opening 3.10 formed on the side wall of the valve core 3.7, which connects the first liquid inlet 3.4 and the first flow channel 3.8 when the valve core 3.7 slides to the liquid removal position, and a second opening 3.11 which connects the second liquid outlet 3.3 and the second flow channel 3.9. When the valve core 3.7 slides to the liquid replenishment position, it connects the first liquid inlet 3.4 and the second flow channel 3.9. The valve core 3.7 also forms a through groove 3.13 on the outer wall of the second flow channel 3.9, which connects the second liquid outlet 3.3 and the second liquid inlet 3.5 when the valve core 3.7 slides to the liquid replenishment position.

[0024] In terms of specific structure, the first liquid outlet 3.2 is located at the upper end of the valve core 3.7, and the lower end of the valve core 3.7 is the liquid inlet and outlet 3.1, which is directly connected to the container port 1.2 of the screw cap 1.1. The first flow channel 3.8 is located in the upper section of the valve core 3.7, and the second flow channel is located in the lower section. The openings on the valve body 3.6 and the valve core 3.7 should be of the same size. The first liquid inlet 3.4 and the second liquid outlet 3.3 are arranged one above the other, separated by one hole. The first opening 3.10, the third opening 3.12, the second opening 3.11, and the through groove 3.13 are arranged in close proximity from top to bottom. The partition 3.14 between the first flow channel 3.8 and the second flow channel 3.9 is located between the first opening 3.10 and the third opening 3.12. The two positions of the valve core 3.7 for fluid withdrawal and replenishment correspond to the two positions of the first liquid inlet 3.4 switching back and forth between the first opening 3.10 and the third opening 3.12. Correspondingly, the second liquid outlet 3.3 switches back and forth between the second opening 3.11 and the through groove 3.13. The through groove 3.13 is a groove extending circumferentially along the outer wall of the valve core 3.7.

[0025] For ease of operation, a flip cover 8 for controlling the flow channel switching of the reversing valve 3 is hinged on the top cover 6 .

[0026] Typically, people typically close the flip cover 8 to remove liquid and open it to replenish it. Therefore, the reversing valve 3 is equipped with a spring 9 to maintain its replenishing state. Closing the flip cover 8 forces the reversing valve 3 to switch to the discharging state. In this embodiment, a compression spring 9 is installed at the lower end of the valve core 3.7, pushing the valve core 3.7 upward to the discharging position. When the flip cover 8 is closed, the flip cover 8 presses the valve core 3.7 downward to the discharging position.

[0027] The pump 2 can be a conventional diaphragm pump. The diaphragm pump in this embodiment includes a valve seat 2.3, a one-way valve disc 2.4, a diaphragm 2.5, a pressure seat 2.6, a rocker 2.7, a crank 2.8, and a motor 2.9. The valve seat 2.3 has a central portion formed with a liquid outlet cavity 2.30 connected to the pump outlet 2.2, and a liquid inlet cavity 2.31 surrounding the liquid outlet cavity 2.30 and connected to the pump inlet 2.1. The top wall of the liquid inlet cavity 2.31 forms a valve port 2.32 for mounting the one-way valve disc 2.4. The diaphragm 2.5 has a self-resilient bulge 2.51 that connects to the valve port 2.32 and a plug 2.52 that blocks the liquid outlet cavity 2.30. The diaphragm 2.5 is sandwiched between the pressure seat 2.6 and the valve seat 2.3. The central portion 2.61 of the pressure seat 2.6, corresponding to the plug 2.52, maintains a certain distance from the plug 2.52 to provide space for the plug 2.52 to deform. One end of the rocker 2.7 is universally connected to the central portion 2.61, and the other end is universally connected to the crank 2.8, and the rocker 2.7 forms a pressure head 2.71 for pressing the bulge 2.51. The crank 2.8 is connected to the motor 2.9 for driving.

[0028] The starting motor 2.9 drives the crank 2.8 to rotate, and the crank 2.8 drives the rocker 2.7 to perform a conical pendulum motion. The pressure head 2.71 of the rocker 2.7 will reciprocate and squeeze the bulge 2.51 of the diaphragm 2.5. Due to the self-rebounding property of the diaphragm, the compression chamber formed in the bulge 2.51 thereof is repeatedly compressed and expanded. During compression, the fluid in the inner cavity of the bulge 2.51 will push up the plug 2.52 and flow into the liquid outlet cavity 2.30; and during expansion and recovery, the negative pressure formed in the inner cavity of the bulge 2.51 will force the fluid in the liquid inlet cavity 2.31 to push open the one-way valve disc 2.4 and flow into the inner cavity of the bulge 2.51. The crank 2.7 refers to a component of a conventional crank structure. This embodiment uses a disc, and the rocker 2.7 is connected to the radial position of the disc.

[0029] To improve the efficiency of the pump 2, the liquid inlet chamber 2.31 is designed in an annular shape, and the valve port 2.32, the one-way valve disc 2.4, the bulge 2.51 and the pressure head 2.71 are evenly arranged in three groups along the liquid inlet chamber 2.31. Of course, more groups can be arranged if space permits.

[0030] To enable automatic control of pump 2, a pressure sensor 10 for controlling pump 2 is installed in the connecting pipe between first liquid inlet 3.4 and pump outlet 2.2. During rehydration, when pressure sensor 10 detects that the pressure in the pipe exceeds a set value (equivalent to the pressure in container 1), it sends a control signal to shut down pump 2 to prevent overfilling.

[0031] In order to keep the reusable vacuum container upright, a hard shell 11 can be installed outside the container 1 to meet the needs of daily use.

Claims

1. A reusable vacuum container comprising a variable-volume container, a pump, a reversing valve, and fixed liquid outlet and inlet nozzles, characterized in that: The reversing valve has an inlet and outlet, a first liquid outlet, a second liquid outlet, a first liquid inlet and a second liquid inlet. The inlet and outlet are connected to the container port, the first liquid outlet is connected to the liquid outlet nozzle pipe, the second liquid outlet is connected to the suction inlet pipe of the pump, the first liquid inlet is connected to the pump outlet pipe of the pump, and the second liquid inlet is connected to the liquid inlet nozzle pipe. The flow channel switching in the reversing valve is set to be connected with the first liquid outlet and cut off from the inlet and outlet when taking liquid, and the second liquid outlet is connected with the inlet and outlet and cut off from the second liquid inlet when replenishing liquid; and when replenishing liquid, the first liquid inlet is connected with the inlet and outlet and cut off from the first liquid outlet, and the second liquid outlet is connected with the second liquid inlet and cut off from the inlet and outlet.

2. The reusable vacuum container according to claim 1, characterized in that: The reversing valve includes a valve body forming a first liquid inlet, a second liquid outlet and a second liquid inlet, and the second liquid outlet and the second liquid inlet are respectively arranged on both sides of the same position of the valve body, a sliding and sealing valve core is installed in the valve cavity of the valve body, the liquid inlet and outlet and the first liquid outlet are respectively arranged at both ends of the valve core, and two mutually isolated first flow channels connected to the first liquid outlet and a second flow channel connected to the liquid inlet and outlet are formed in the valve core, a first opening connecting the first liquid inlet and the first flow channel and a second opening connecting the second liquid outlet and the second flow channel are formed on the side wall of the valve core when the valve core slides to the liquid removal position, and a third opening connecting the first liquid inlet and the second flow channel when the valve core slides to the liquid replenishing position, and a through groove is formed on the outer wall of the second flow channel of the valve core for connecting the second liquid outlet and the second liquid inlet when the valve core slides to the liquid replenishing position.

3. The reusable vacuum container according to claim 1, characterized in that: The utility model also comprises a top cover for fixing the liquid outlet nozzle and the liquid inlet nozzle, and a flip cover for controlling the switching of the flow channel of the reversing valve is hinged on the top cover.

4. The reusable vacuum container according to claim 3, characterized in that: The reversing valve is provided with a spring for maintaining the reversing valve in a liquid-replenishing state, and the reversing valve is switched to a liquid-dispensing state when the flip cover is closed.

5. The reusable vacuum container according to claim 1, characterized in that: The pump is a diaphragm pump.

6. The reusable vacuum container according to claim 5, characterized in that: The diaphragm pump includes a valve seat, a one-way valve disc, a diaphragm, a pressure seat, a rocker, a crank and a motor. A liquid outlet cavity connected to the pump outlet and a liquid inlet cavity connected to the suction port surrounding the liquid outlet cavity are formed in the center of the valve seat. The top wall of the liquid inlet cavity forms a valve port for installing the one-way valve disc. The diaphragm forms a bulge that self-rebounds and connects to the valve port and a plug that blocks the liquid outlet cavity. The diaphragm is clamped between the pressure seat and the valve seat, and the central part of the corresponding plug part of the pressure seat maintains a certain distance from the plug part. One end of the rocker is universally connected to the central part, and the other end is universally connected to the crank. The rocker forms a pressure head for squeezing the bulge part, and the crank is connected to the motor drive.

7. The reusable vacuum container according to claim 6, characterized in that: The liquid inlet cavity is configured to be annular, and the valve port, the one-way valve flap, the bulge portion and the pressure head are evenly distributed in three groups along the liquid inlet cavity.

8. The reusable vacuum container according to claim 1, characterized in that: A pressure sensor for controlling the pump is installed on the connecting pipe between the first liquid inlet and the pump outlet of the pump.

9. The reusable vacuum container according to any one of claims 1 to 8, characterized in that: A hard shell is installed outside the container.

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