Reusable vacuum container

Abstract

The invention 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 invention relates to the technical field of containers for storing fluids, and in particular to a vacuum container without air backflow. Background Art

[0002] The characteristic of vacuum containers is that after taking out the liquid, no air will flow back into the container to replenish it, preventing the fluid stored inside from contacting the refluxed air. It is often used in the packaging of food and daily chemical products to store fluids that are easily deteriorated when exposed to air. Currently, the common vacuum containers on the market are variable volume bottles with lotion pumps and bags with one-way valves at the liquid outlet. These two types of vacuum containers are disposable in daily use. After the fluid stored inside is completely taken out, it cannot be refilled and used again, which will cause great waste and generate a lot of garbage to pollute the environment. Summary of the invention

[0003] The technical problem to be solved by the present invention 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 a liquid inlet and outlet, a first liquid outlet, a second liquid outlet, a first liquid inlet and a second liquid inlet, the liquid inlet and outlet are connected to the container port, the first liquid outlet is connected to the liquid outlet nozzle pipeline, the second liquid outlet is connected to the suction inlet pipeline of the pump, the first liquid inlet is connected to the pump outlet pipeline of the pump, and the second liquid inlet is connected to the liquid inlet nozzle pipeline, and the flow channel switching in the reversing valve is set to when taking liquid, the first liquid inlet is connected to the first liquid outlet and cut off from the liquid inlet and outlet, and the second liquid outlet is connected to the liquid inlet and outlet and cut off from the second liquid inlet; and when replenishing liquid, the first liquid inlet is connected to the liquid inlet and outlet and cut off from the first liquid outlet, and the second liquid outlet is connected to the second liquid inlet and cut off from the liquid 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 a 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, it also includes 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.

[0007] On the basis of the above, the reversing valve is installed with a spring to maintain its liquid replenishing state, and after the flip cover is closed, the reversing valve is switched to the liquid taking state.

[0008] Based on the above, the pump is a diaphragm pump.

[0009] On the basis of the above, 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 self-rebounding bulge connecting the valve port and a plug portion for blocking the liquid outlet cavity. The diaphragm is clamped between the pressure seat and the valve seat, and the central part of the corresponding plug portion of the pressure seat maintains a certain distance from the plug portion. 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 portion, and the crank is connected to the motor drive.

[0010] On the basis of the above, the liquid inlet cavity is configured to be annular, and the valve port, the one-way valve disc, the bulge and the pressure 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 installed on the connecting pipe between the first liquid inlet and the pump outlet of the pump.

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

[0013] The beneficial effects brought about by the use of the present invention are as follows: since the vacuum container of the present invention is equipped with a pump and a reversing valve, the reversing valve can change the flow direction of the pumped fluid, so that the fluid can be pumped out of the vacuum container or pumped into the vacuum container, thereby achieving the purpose of refilling the vacuum container with fluid for repeated use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the reusable vacuum container of the present invention; Figure 2 is a schematic cross-sectional structure diagram of a reusable vacuum container of the present invention; Figure 3 It is a cross-sectional structural schematic diagram of the reversing valve in the liquid taking state of the present invention; Figure 4 It is a schematic cross-sectional structure diagram of the reversing valve in the liquid replenishing state of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the pump in the present invention; Figure 6 It is a schematic diagram of the structure when the flip cover is opened in the present invention. DETAILED DESCRIPTION

[0015] like Figure 1-6 As shown, a reusable vacuum container includes a variable volume container 1, a pump 2, a reversing valve 3, and a fixed liquid outlet 4 and a liquid inlet 5. The variable volume container 1 can be a common hose-type packaging container, and of course it can also be other uncommon non-hose type variable volume containers. The pump 2 can be a conventional micro pump suitable for daily 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 mouth of the container 1, the first liquid outlet 3.2 is connected to the liquid outlet nozzle 4 through a pipeline, the second liquid outlet 3.3 is connected to the suction inlet 2.1 of the pump 2 through a pipeline, the first liquid inlet 3.4 is connected to the pump outlet 2.2 of the pump 2 through a pipeline, and the second liquid inlet 3.5 is connected to the liquid inlet nozzle 5 through a pipeline. The flow channel switching in the reversing valve 3 is set so that when taking liquid, the first liquid inlet 3.4 is connected to the first liquid outlet 3.2 and is 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 is cut off from the second liquid inlet 3.5; and when replenishing liquid, the first liquid inlet 3.4 is connected to the liquid inlet and outlet 3.1 and is 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 is cut off from the liquid inlet and outlet 3.1.

[0016] When taking liquid on a daily basis, switch the reversing valve 3 to the liquid taking state, at which time 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. Then start the pump 2, and the fluid in the container 1 is drawn into the pump 2 through the liquid inlet and outlet 3.1 and the second liquid outlet 3.3, and then pumped out of the liquid outlet nozzle 4 through the first liquid inlet 3.4 and the first liquid outlet 3.2. When the fluid in the container 1 is used up, it is necessary to refill the container 1 with liquid, and switch the reversing valve 3 to the liquid replenishing state, at which time 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. Then start the pump 2, and the refilled fluid is drawn into the 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 the container 1 through the first liquid inlet 3.4 and the liquid inlet and outlet 3.1.

[0017] The conventional and better design should reflect the integrity of the product, so the pump 2, the reversing valve 3 and the connecting pipe can be installed on the top of the screw cap 1.1 of the container 1, and the outer shell (a common component, not shown in the figure) is provided with a top cover 6 on the top of the shell, and the liquid outlet 4 and the liquid inlet 5 are fixed on the top cover 6. Accordingly, the liquid inlet and outlet 3.1 of the reversing valve 3 is connected to the screw cap 1.1 and communicates with the inner cavity of the container 1. At the same time, the liquid inlet and outlet 3.1 can also be connected to the conduit 7 inserted into the bottom of the container 1, which is conducive to the suction of the fluid.

[0018] 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, and the second liquid outlet 3.3 and the second liquid inlet 3.5 are respectively arranged on both sides of the same position of the valve body 3.6, a valve core 3.7 that slides and seals is installed in the valve cavity of the valve body 3.6, 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, and 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, the side wall of the valve core 3.7 forms a first opening 3.10 that connects the first liquid inlet 3.4 and the first flow channel 3.8 when the valve core 3.7 slides to the liquid taking position, and a second opening 3.11 that connects the second liquid outlet 3.3 and the second flow channel 3.9, and a third opening 3.12 that connects the first liquid inlet 3.4 and the second flow channel 3.9 when the valve core 3.7 slides to the liquid replenishing position, and the valve core 3.7 forms a through groove 3.13 on the outer wall of the second flow channel 3.9 that connects the second liquid outlet 3.3 and the second liquid inlet 3.5 when the valve core 3.7 slides to the liquid replenishing position.

[0019] In terms of specific structure, the first liquid outlet 3.2 is arranged 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 arranged at the upper section of the valve core 3.7, and the second flow channel is arranged at the lower section. The sizes of the openings on the valve body 3.6 and the valve core 3.7 should be of the same specification. The first liquid inlet 3.4 and the second liquid outlet 3.3 are arranged up and down, and are separated by one hole position. The first opening 3.10, the third opening 3.12, the second opening 3.11 and the through groove 3.13 are arranged in sequence from top to bottom. The partition 3.14 between the first flow channel 3.8 and the second flow channel 3.9 is arranged between the first opening 3.10 and the third opening 3.12. The two positions of the valve core 3.7 for switching between taking liquid and replenishing liquid correspond to the two positions of the first liquid inlet 3.4 switching between the first opening 3.10 and the third opening 3.12, and the second liquid outlet 3.3 switches back and forth between the second opening 3.11 and the through groove 3.13 accordingly. The through groove 3.13 is a groove extending circumferentially along the outer wall of the valve core 3.7.

[0020] For easy operation, a flip cover 8 for controlling the switching of the flow channel of the reversing valve 3 is hinged on the top cover 6 .

[0021] Usually, the usual operation of people is to take out liquid when closing the flip cover 8 and replenish liquid when opening the flip cover 8. Therefore, the reversing valve 3 is equipped with a spring 9 to maintain its liquid replenishing state, and the reversing valve 3 is switched to the liquid taking state after the flip cover 8 is closed. In this embodiment, a compression spring 9 is used, which is installed at the lower end of the valve core 3.7 and pushes the valve core 3.7 to move up to the liquid replenishing position. When the flip cover 8 is closed, the flip cover 8 presses the valve core 3.7 downward to move it down to the liquid taking position.

[0022] The pump 2 may 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. A liquid outlet cavity 2.30 connected to the pump outlet 2.2 and a liquid inlet cavity 2.31 connected to the suction port 2.1 surrounding the liquid outlet cavity 2.30 are formed in the center of the valve seat 2.3. The top wall of the liquid inlet cavity 2.31 forms a valve port 2.32 for installing the one-way valve disc 2.4. The diaphragm 2.5 forms a self-rebounding bulge 2.51 that docks the valve port 2.32 and a plug 2.52 that blocks the liquid outlet cavity 2.30. The diaphragm 2.5 is clamped between the pressure seat 2.6 and the valve seat 2.3, and the central portion 2.61 of the corresponding plug 2.52 of the pressure seat 2.6 is kept at a certain distance from the plug 2.52 to provide a space for the plug 2.52 to be deformed. 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 drivingly connected to the motor 2.9.

[0023] The starter 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 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.

[0024] To improve the efficiency of the pump 2, the liquid inlet cavity 2.31 is designed to be annular, and the valve port 2.32, the one-way valve flap 2.4, the bulge 2.51 and the pressure head 2.71 are evenly arranged in three groups along the liquid inlet cavity 2.31. Of course, more groups can be arranged if space permits.

[0025] In order to realize the automatic control capability of the pump 2, a pressure sensor 10 for controlling the pump 2 is installed on the connecting pipe between the first liquid inlet 3.4 and the pump outlet 2.2 of the pump 2. During the liquid replenishment, when the pressure sensor 10 detects that the pressure in the pipe exceeds the set pressure value (equivalent to the pressure in the container 1), a control signal is sent to shut down the pump 2 to prevent the problem of overfilling of the liquid replenishment.

[0026] 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 container with a variable volume, a pump, a reversing valve, and a fixed liquid outlet and liquid inlet, characterized in that: The reversing valve comprises a liquid inlet and outlet, a first liquid outlet, a second liquid outlet, a first liquid inlet and a second liquid inlet, the liquid 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 so that when taking liquid, the first liquid inlet is connected to the first liquid outlet and cut off from the liquid inlet and outlet, and the second liquid outlet is connected to the liquid inlet and outlet and cut off from the second liquid inlet; and when replenishing liquid, the first liquid inlet is connected to the liquid inlet and outlet and cut off from the first liquid outlet, and the second liquid outlet is connected to the second liquid inlet and cut off from the liquid inlet and outlet.

2. The reusable vacuum container according to claim 1, characterized in that: The reversing valve includes a valve body that forms 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 two 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 that connects the first liquid inlet and the first flow channel when the valve core slides to the liquid taking position and a second opening that connects the second liquid outlet and the second flow channel are formed on the side wall of the valve core, and a third opening that connects the first liquid inlet and the second flow channel when the valve core slides to the liquid replenishing position, and a through groove that connects the second liquid outlet and the second liquid inlet is formed on the outer wall of the second flow channel when the valve core slides to the liquid replenishing position.

3. The reusable vacuum container according to claim 1, characterized in that: It also includes a top cover for fixing the liquid outlet and the liquid inlet, 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 filling state, and the reversing valve is switched to a liquid taking state after 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 bulging portion that self-rebounds and docks with the valve port and a plug portion that blocks the liquid outlet cavity. The diaphragm is clamped between the pressure seat and the valve seat, and the central portion of the corresponding plug portion of the pressure seat maintains a certain distance from the plug portion. One end of the rocker is universally connected to the central portion, and the other end is universally connected to the crank. The rocker forms a pressure head for squeezing the bulging portion, 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 arranged in a ring shape, and the valve port, the one-way valve flap, the bulge and the pressure head are evenly arranged 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 pipeline 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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