Vacuum liquid injection machine

Abstract

A vacuum liquid injection machine comprises a supporting frame, a feeding module, a quantitative injection pump, a first pipeline assembly, a vacuum tank, a second pipeline assembly, an evacuation assembly, a first butt joint assembly, a second butt joint assembly, a weighing device and a recovery device, and the first pipeline assembly and the second pipeline assembly are provided with a first control valve and a second control valve respectively. The first pipeline assembly is connected with the feeding module, the vacuum tank and the quantitative injection pump, the second pipeline assembly is connected with the vacuum tank and the evacuation assembly, the first butt joint assembly is connected to the bottom of the vacuum tank, and the second butt joint assembly is connected to the recovery device. The vacuum tank and the product are evacuated through the evacuating assembly, after evacuating is completed, liquid is rapidly pressed into the product through air pressure, the liquid injection efficiency is effectively improved, the quantitative injection pump and the weighing equipment are matched, the injection amount is effectively controlled, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to liquid injection equipment, in particular to a vacuum liquid injection machine. Background Art

[0002] For containers with complex internal spaces or small pipes, it is very difficult to fill the container with liquid. The existing equipment connects the liquid to the container water inlet through a pipe, opens the container water outlet, and then uses pressure to press a fixed amount of liquid into the container. This has a slow filling efficiency and inaccurate filling volume control. In many cases, the filling requirements cannot be met, or the filled liquid is prone to leaking. Summary of the invention

[0003] Based on this, it is necessary to provide a vacuum liquid injection machine to address the deficiencies in the prior art.

[0004] A vacuum liquid injection machine comprises a support frame, a feeding module, a quantitative injection pump, a first pipeline assembly, a vacuum tank, a second pipeline assembly, a vacuum assembly, a first docking assembly, a second docking assembly, a weighing device, and a recovery device. The first pipeline assembly and the second pipeline assembly are respectively provided with a first control valve and a second control valve. The first pipeline assembly connects the feeding module, the vacuum tank and the quantitative injection pump, the second pipe assembly connects the vacuum tank and the vacuum assembly, the first docking assembly is connected to the bottom of the vacuum tank, and the second docking assembly is connected to the recovery device.

[0005] In one embodiment, a workbench and a positioning frame are provided on the support frame, an upper space is formed above the workbench, the positioning frame is arranged in the upper space, the positioning frame divides the upper space into a front cavity and a rear cavity, and an operating port connected to the front cavity is also provided on the front side of the support frame, and a stepped surface is provided on the side of the positioning frame close to the rear cavity.

[0006] In one embodiment, the feeding module includes a liquid storage barrel, a water pump and a top liquid storage tank, and the liquid storage barrel, the water pump and the top liquid storage tank are connected in sequence through pipelines.

[0007] In one embodiment, a lower space is formed under the workbench, the liquid storage barrel is placed in the lower space of the support frame, the water pump is installed on the workbench at the bottom of the rear cavity, and the top liquid storage tank is installed on the top of the support frame and extends into the rear cavity.

[0008] In one of the embodiments, the weighing device is fixed on a workbench below the front cavity, and the quantitative injection pump and the vacuum tank are installed on the stepped surface of the positioning frame.

[0009] In one of the embodiments, it also includes a safety grating, which is installed on both sides of the operating port on the support frame.

[0010] In one embodiment, the evacuation assembly includes a vacuum pump and a filter group. The vacuum pump, the filter group and the vacuum tank are connected in sequence through pipelines. The filter group is arranged in the rear cavity and installed on the support frame.

[0011] In one embodiment, the first docking assembly is provided with a docking head, the second docking assembly is provided with a docking head and a circulation pump, and the circulation pump is installed on a workbench at the bottom of the rear cavity.

[0012] In one embodiment, it further includes a third control valve and a pressurized air pump, and the pressurized air pump, the third control valve and the vacuum pump are connected in sequence through pipelines.

[0013] The beneficial effect of the vacuum liquid injection machine of the present invention is that the present invention uses a vacuuming component to evacuate the vacuum tank and the product. After the vacuuming is completed, the air pressure is used to quickly press the liquid into the product, thereby effectively improving the liquid injection efficiency. In conjunction with a quantitative injection pump and a weighing device, the injection volume can be effectively controlled to improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 , Figure 2 , Figure 3 The schematic diagrams of the structure of the vacuum liquid injection machine of the present invention at different angles;

[0015] Figure 4 for Figure 3 The schematic diagram of the structure of the vacuum liquid injection machine after the frame is removed, wherein the first pipeline assembly, the second pipeline assembly, the third control valve, the pressurized air pump, the vacuum pump and the pipeline are not shown;

[0016] Figure 5 It is a schematic diagram of the connection of various modules of the vacuum liquid injection machine of the present invention; DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0023] See also Figures 1 to 5 The present invention provides a vacuum liquid injection machine for injecting liquid into a product 200. The product 200 is provided with an inner channel, a liquid inlet connected to one side of the inner channel, and a liquid outlet connected to the other side of the inner channel. The vacuum liquid injection machine includes a support frame 10, a feeding module 20, a quantitative injection pump 30, a first pipeline assembly 60, a vacuum tank 40, a second pipeline assembly 70, an evacuation assembly 50, a first docking assembly 80, a second docking assembly 90, a weighing device 100, a recovery device 110 and a safety grating 120. The first pipeline assembly 60 and the second pipeline assembly 70 are respectively provided with a first control valve 61 and a second control valve 71. The first pipeline assembly 60 is connected to the feeding module 20, the vacuum tank 40 and the quantitative injection pump 30. The second pipe assembly is connected to the vacuum tank 40 and the evacuation assembly 50. The first docking assembly 80 is connected to the bottom of the vacuum tank 40, and the second docking assembly 90 is connected to the top of the recovery device 110.

[0024] A workbench 11 and a positioning frame 12 are provided on the support frame 10. An upper space is formed above the workbench 11, and a lower space is formed below the workbench 11. The positioning frame 12 is arranged in the upper space, and the positioning frame 12 divides the upper space into a front cavity 13 and a rear cavity 14. An operation port 15 connected to the front cavity 13 is also provided on the front side of the support frame 10. A step surface 121 is provided on the side of the positioning frame 12 close to the rear cavity 14. The safety grating 120 is installed on both sides of the operation port 15 on the support frame 10. The weighing device 100 is fixed on the workbench 11 below the front cavity 13. The quantitative injection pump 30 and the vacuum tank 40 are installed on the step surface 121 of the positioning frame 12.

[0025] The feeding module 20 includes a liquid storage barrel 21, a water pump 22 and a top liquid storage tank 23, which are connected in sequence by pipelines. The liquid storage barrel 21 is placed in the lower space of the support frame 10, the water pump 22 is installed on the workbench 11 at the bottom of the rear cavity 14, and the top liquid storage tank 23 is installed on the top of the support frame 10 and extends into the rear cavity 14.

[0026] The evacuation assembly 50 includes a vacuum pump 51 and a filter group 52. The vacuum pump 51, the filter group 52 and the vacuum tank 40 are connected in sequence through pipelines. The filter group 52 is arranged in the rear cavity 14 and installed on the support frame 10. The first docking assembly 80 is provided with a docking head, and the second docking assembly 90 is provided with a docking head, a circulation switch (not shown) and a circulation pump 91. The circulation pump 91 is installed on the workbench 11 at the bottom of the rear cavity 14. The circulation pump 91 is used to assist in discharging liquid from the product 200. The circulation switch can be adjusted to be in an open or closed state.

[0027] The state of the first control valve 61 can be adjusted to be in a first state, a second state or a third state. When the first control valve 61 is in the first state, the pipeline between the top liquid storage tank 23 of the feeding module 20 and the quantitative injection pump 30 is in a connected state, the pipeline between the feeding module 20 and the vacuum pump 51 is in a cut-off state, and the pipeline between the quantitative injection pump 30 and the vacuum tank 40 is in a cut-off state; when the first control valve 61 is in the second state, the pipeline between the top liquid storage tank 23 of the feeding module 20 and the quantitative injection pump 30 is in a cut-off state, the pipeline between the top liquid storage tank 23 of the feeding module 20 and the vacuum tank 40 is in a cut-off state, and the pipeline between the quantitative injection pump 30 and the vacuum tank 40 is in a connected state; when the first control valve 61 is in the third state, the pipeline between the top liquid storage tank 23 of the feeding module 20 and the quantitative injection pump 30 is in a cut-off state, the pipeline between the feeding module 20 and the vacuum tank 40 is in a connected state, and the pipeline between the quantitative injection pump 30 and the vacuum tank 40 is in a cut-off state.

[0028] The state of the second control valve 71 can be adjusted to be in a first state and a second state. When the second control valve 71 is in the first state, the pipeline between the vacuum tank 40 and the filter group 52 of the evacuation component 50 is in a connected state, and the vacuum tank 40 is isolated from the external air; when the second control valve 71 is in the second state, the pipeline between the vacuum tank 40 and the filter group 52 of the evacuation component 50 is in a cut-off state, and the vacuum tank 40 is in a connected state with the external air.

[0029] In addition, the present invention further comprises a third control valve 140, a pressurized air pump 130, and the pressurized air pump 130, the third control valve 140 and the vacuum pump 51 are sequentially connected through pipelines. The third control valve 140 can switch the state so that the third control valve 140 is in an open or closed state.

[0030] When injecting liquid, it includes a loading stage, a primary injection stage, a cleaning stage and a secondary injection stage. In the loading stage, the product 200 is transferred to the weighing device 100, and the docking joints of the first docking assembly 80 and the docking joints of the second docking assembly 90 are buckled on the liquid inlet and the liquid outlet, and the weighing device 100 weighs the product 200.

[0031] Entering the initial liquid injection stage, the first control valve 61 is switched to the first state, the third control valve 140 is switched to the closed state, the pipeline between the top liquid storage tank 23 of the feeding module 20 and the quantitative injection pump 30 is in a connected state, and the quantitative injection pump 30 extracts liquid from the feeding module 20. The second control valve 71 is switched to the first state, the pipeline between the vacuum tank 40 and the filter group 52 of the evacuation component 50 is in a connected state, and the evacuation component 50 evacuates the vacuum tank 40 and the product 200. The evacuation component 50 is closed, the first control valve 61 is switched to the second state, the circulation switch is in the closed state, and the quantitative injection pump 30 injects liquid into the vacuum tank 40. The first control valve 61 is switched to the first state, the second control valve 71 is switched to the second state, the circulation switch is in the open state, the vacuum tank 40 is in a connected state with the external air, and the external air presses part of the liquid in the vacuum tank 40 into the product 200.

[0032] When entering the cleaning stage, the second control valve 71 switches to the first state, the third control valve 140 switches to the open state, and the pressure pump 130 pressurizes the vacuum tank 40 so that the remaining liquid in the vacuum tank 40 is pressed into the product 200. The liquid in the product 200 flows out from the liquid outlet to the recovery device 110. During the liquid flowing out from the liquid outlet, the internal channel inside the product 200 is cleaned. When the liquid discharge time is reached, if there is still liquid left in the product 200, the pressure pump 130 and the third control valve 140 are closed, and the weighing device 100 weighs the product 200 again. The amount of liquid L that needs to be injected is calculated based on the weighing result, and the circulation switch is switched to the closed state.

[0033] When entering the secondary liquid injection stage, the steps of the above initial liquid injection stage are repeated, and the quantitative injection pump 30 injects the required amount of liquid into the vacuum tank 40, and presses the liquid in the vacuum tank 40 into the product 200 through atmospheric pressure.

[0034] The beneficial effect of the vacuum liquid injection machine of the present invention is that: the present invention uses a vacuum assembly 50 to evacuate the vacuum tank 40 and the product 200. After the vacuuming is completed, the liquid is quickly pressed into the product 200 using air pressure, thereby effectively improving the liquid injection efficiency. In addition, in conjunction with the quantitative injection pump 30 and the weighing device 100, the injection volume is effectively controlled to improve the quality of the product 200.

[0035] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A vacuum liquid injection machine, characterized in that: It includes a support frame, a feeding module, a quantitative injection pump, a first pipeline assembly, a vacuum tank, a second pipeline assembly, a vacuum assembly, a first docking assembly, a second docking assembly, a weighing device, and a recovery device. The first pipeline assembly and the second pipeline assembly are respectively provided with a first control valve and a second control valve. The first pipeline assembly connects the feeding module, the vacuum tank and the quantitative injection pump, the second pipe assembly connects the vacuum tank and the vacuum assembly, the first docking assembly is connected to the bottom of the vacuum tank, and the second docking assembly is connected to the recovery device.

2. The vacuum liquid injection machine according to claim 1, characterized in that: A workbench and a positioning frame are provided on the support frame, an upper space is formed above the workbench, the positioning frame is arranged in the upper space, the positioning frame divides the upper space into a front cavity and a rear cavity, and an operating port connected to the front cavity is also provided on the front side of the support frame, and a stepped surface is provided on the side of the positioning frame close to the rear cavity.

3. The vacuum liquid injection machine according to claim 2, characterized in that: The feeding module comprises a liquid storage barrel, a water pump and a top liquid storage tank, and the liquid storage barrel, the water pump and the top liquid storage tank are connected in sequence through pipelines.

4. The vacuum liquid injection machine according to claim 3, characterized in that: A lower space is formed below the workbench, the liquid storage barrel is placed in the lower space of the support frame, the water pump is installed on the workbench at the bottom of the rear cavity, and the top liquid storage tank is installed on the top of the support frame and extends into the rear cavity.

5. The vacuum liquid injection machine according to claim 2, characterized in that: The weighing device is fixed on the workbench below the front cavity, and the quantitative injection pump and the vacuum tank are installed on the stepped surface of the positioning frame.

6. The vacuum liquid injection machine according to claim 2, characterized in that: It also includes a safety grating, which is installed on both sides of the operating port on the supporting frame.

7. The vacuum liquid injection machine according to claim 2, characterized in that: The vacuuming assembly comprises a vacuum pump and a filter group, the vacuum pump, the filter group and the vacuum tank are connected in sequence through pipelines, and the filter group is arranged in the rear cavity and installed on the support frame.

8. The vacuum liquid injection machine according to claim 2, characterized in that: The first docking assembly is provided with a docking head, and the second docking assembly is provided with a docking head and a circulation pump, wherein the circulation pump is installed on a workbench at the bottom of the rear cavity.

9. The vacuum liquid injection machine according to claim 1, characterized in that: It also includes a third control valve and a pressurized air pump, and the pressurized air pump, the third control valve and the vacuum pump are connected in sequence through pipelines.

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