Liquid packaging bag liquid inlet valve with non-return function

Abstract

The utility model belongs to the technical field of packaging bag liquid inlet valves, and discloses a liquid packaging bag liquid inlet valve with a non-return function, which comprises a mounting plate, a column body is mounted in the middle of the mounting plate, a circulation cavity is arranged in the column body in a penetrating manner, and a mounting rod is mounted in the middle of the circulation cavity. A first non-return assembly is installed at the top end of the installation rod, a second non-return assembly is installed at the bottom end of the installation rod, a sealing ring is installed at the position, located above the installation rod, in the circulation cavity, a slope is arranged on the inner side of the sealing ring, a first sealing gasket is installed at the bottom end of the inner side of the sealing ring, and the top end of the column body is in threaded connection with a sealing cover. According to the liquid packaging bag liquid inlet valve with the non-return function, the circulation cavity can be sealed through movement of the cambered surface valve clack, movement of the baffle and springback of the compression spring and the extension spring, the situation that liquid flows back and accumulates in the valve is reduced, then the sealing effect of the liquid packaging bag liquid inlet valve with the non-return function is improved, and liquid waste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to packing bag liquid inlet valve technical field, more specifically, especially relates to a liquid packing bag liquid inlet valve with check function. BACKGROUND

[0002] In the liquid storage and transportation industry, in order to better save cost and facilitate storage and transportation, disposable liquid bag packaging is widely used, and the liquid packing bag liquid inlet valve is a valve device used in the liquid packing bag, mainly used for controlling the entry of liquid, ensuring that the liquid does not leak during the packaging process, and facilitating filling and sealing.

[0003] Now some liquid packing bag liquid inlet valves are directly sealed by screwing the sealing cover, which causes liquid to remain in the valve below the sealing cover during transportation, and the liquid is easy to seep out when opened again, causing waste.

[0004] Therefore, in view of the above, the existing structure and defects are improved, and a liquid packing bag liquid inlet valve with check function is provided to achieve a more practical purpose. INVENTION CONTENTS

[0005] To solve the above technical problems, the utility model provides a liquid packing bag liquid inlet valve with check function, which is achieved by the following specific technical means:

[0006] A liquid packing bag liquid inlet valve with check function, comprising a mounting plate, a column body is installed at the middle position of the mounting plate, a flow-through cavity is provided through the inside of the column body, an installation rod is installed at the middle position of the flow-through cavity, a first check assembly is installed at the top end of the installation rod, a second check assembly is installed at the bottom end of the installation rod, a sealing ring is installed inside the flow-through cavity at a position above the installation rod, a slope is provided on the inner side of the sealing ring, a first sealing gasket is installed at the bottom end of the inner side of the sealing ring, and a sealing cover is threadedly connected to the top end of the column body.

[0007] Further, the first check assembly comprises a first mounting seat installed at the middle position of the top end of the installation rod, a first sliding groove is provided at the top end of the first mounting seat, a first connecting rod is slidably installed in the first sliding groove, an arc valve flap is installed at the top end of the first connecting rod, a compression spring is installed at the bottom end of the first connecting rod, and the other end of the compression spring is connected to the bottom end of the first sliding groove.

[0008] Further, the arc valve flap top end side is in close contact with the first sealing gasket.

[0009] Further, the first connecting rod is provided with a second sealing gasket at the bottom end.

[0010] Further, the second check valve assembly comprises a second mounting base, which is mounted at the middle position of the bottom end of the mounting rod, the bottom end of the second mounting base is provided with a second sliding groove, a second connecting rod is slidingly installed in the second sliding groove, the bottom end of the second connecting rod is provided with a baffle, the top end of the second connecting rod is provided with a tension spring, and the other end of the tension spring is connected with the top end of the second sliding groove.

[0011] Further, the top end of the baffle is attached to the bottom end of the column.

[0012] Further, the top end of the second connecting rod is provided with a third sealing gasket.

[0013] Compared with the prior art, the utility model has the advantages of the following:

[0014] The liquid inlet valve with check function of the liquid packaging bag in the utility model, through the cooperation of the mounting plate, the column, the flow-through cavity, the mounting rod, the sealing ring, the first sealing gasket, the sealing cover, the first mounting base, the first sliding groove, the first connecting rod, the cambered valve disc, the compression spring, the second sealing gasket, the second mounting base, the second sliding groove, the second connecting rod, the baffle, the tension spring and the third sealing gasket, the movement of the cambered valve disc and the movement of the baffle are facilitated, the flow-through cavity is closed through the rebound of the compression spring and the tension spring, the backflow and accumulation of liquid in the valve are reduced, and the sealing effect of the liquid inlet valve with check function of the liquid packaging bag is improved, and liquid waste is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional schematic view of the utility model.

[0016] Figure 2 It is the three-dimensional sectional view schematic view of the utility model.

[0017] Figure 3 It is the three-dimensional sectional view schematic view of the utility model. Figure 2 It is the enlarged schematic view of part A of the utility model.

[0018] Figure 4 It is the enlarged schematic view of part B of the utility model. Figure 2 It is the enlarged schematic view of part B of the utility model.

[0019] In the drawing, the corresponding relationship between the component name and the drawing number is as follows:

[0020] 1, mounting plate; 2, cylinder; 3, flow chamber; 4, mounting rod; 5, sealing ring; 6, first sealing pad; 7, sealing cover; 8, first mounting seat; 9, first sliding groove; 10, first connecting rod; 11, cam valve; 12, compression spring; 13, second sealing pad; 14, second mounting seat; 15, second sliding groove; 16, second connecting rod; 17, baffle; 18, tension spring; 19, third sealing pad. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0022] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the device or element indicated or implied to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. Therefore, it cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] Embodiment:

[0025] As shown in the accompanying Figure 1 to the accompanying Figure 4 As shown:

[0026] The utility model provides a kind of liquid packaging bag liquid inlet valve with non-return function, including mounting plate 1, mounting plate 1 The middle position is equipped with cylinder 2, cylinder 2 It is provided with flow chamber 3 inside, the middle position of flow chamber 3 It is equipped with mounting rod 4, the top of mounting rod 4 It is equipped with first non-return assembly, the bottom of mounting rod 4 It is equipped with second non-return assembly, flow chamber 3 It is equipped with sealing ring 5 inside at the position above mounting rod 4, the inside of sealing ring 5 It is equipped with slope, the bottom of the inside of sealing ring 5 It is equipped with first sealing pad 6, the top of cylinder 2 It is equipped with sealing cover 7 with screw thread.

[0027] The first check assembly comprises a first mounting seat 8, which is installed at the middle position of the top end of the mounting rod 4. The top end of the first mounting seat 8 is provided with a first sliding groove 9. A first connecting rod 10 is slidingly installed in the first sliding groove 9. An arc valve disc 11 is installed at the top end of the first connecting rod 10. A compression spring 12 is installed at the bottom end of the first connecting rod 10. The other end of the compression spring 12 is connected with the bottom end of the first sliding groove 9. The arc valve disc 11 is in close contact with the bottom end sealing gasket of the sealing ring 5, thereby achieving the sealing of the flow chamber 3. When the liquid enters the liquid inlet valve through the pipeline, the liquid extrudes the arc valve disc 11, so that the arc valve disc 11 moves downward. At this time, the liquid enters the valve from the gap between the arc valve disc 11 and the sealing ring 5.

[0028] The top end of the arc valve disc 11 is in close contact with the first sealing gasket 6, thereby achieving the sealing of the liquid inlet valve.

[0029] The bottom end of the first connecting rod 10 is provided with a second sealing gasket 13, which can reduce the entry of liquid into the first sliding groove 9.

[0030] The second check assembly comprises a second mounting seat 14, which is installed at the middle position of the bottom end of the mounting rod 4. The bottom end of the second mounting seat 14 is provided with a second sliding groove 15. A second connecting rod 16 is slidingly installed in the second sliding groove 15. A baffle plate 17 is installed at the bottom end of the second connecting rod 16. A tension spring 18 is installed at the top end of the second connecting rod 16. The other end of the tension spring 18 is connected with the top end of the second sliding groove 15. The baffle plate 17 is in close contact with the bottom end of the column 2, thereby further improving the check effect of the liquid inlet valve. During the liquid inlet process, the liquid extrudes the baffle plate 17 to move downward and enter the inside of the packaging bag. When the liquid inlet is stopped, the tension spring 18 rebounds and drives the baffle plate 17 to move upward. At this time, the baffle plate 17 is in close contact with the bottom end of the column 2. When the packaging bag is stored or transported, the baffle plate 17 can prevent the liquid from entering the inside of the valve. At the same time, when the packaging bag is extruded, the liquid or air in the inside of the packaging bag also extrudes the baffle plate 17, thereby preventing the liquid from entering the inside of the valve.

[0031] The top end of the baffle plate 17 is in close contact with the bottom end of the column 2, so that the baffle plate 17 can prevent the liquid from entering the inside of the valve.

[0032] The top end of the second connecting rod 16 is provided with a third sealing gasket 19, which can reduce the entry of liquid into the inside of the second sliding groove 15.

[0033] The working principle of the embodiment is as follows: when the liquid inlet valve with the non-return function is used, the staff injects liquid into the flow chamber 3 through a pipeline or other machines, when the liquid enters the flow chamber 3, the liquid will first extrude the arc valve 11 to move downwards, at this time, the liquid enters the valve from the gap between the arc valve 11 and the sealing ring 5, when the liquid continues to flow, the liquid extrudes the baffle 17 to move downwards and enters the inside of the packaging bag, when the liquid injection is stopped, the water pressure on the arc valve 11 and the baffle 17 decreases until disappears, at this time, the arc valve 11 and the first sealing gasket 6 on the inside of the sealing ring 5 are tightly attached under the rebound of the compression spring 12, the baffle 17 is tightly attached to the bottom end of the cylinder 2, so that the liquid is prevented from entering the flow chamber 3 and flowing out, when the packaging bag is stored or transported, the baffle 17 can prevent the liquid from entering the inside of the valve, the arc valve 11 can prevent the liquid from flowing out of the liquid inlet valve, at the same time, when the packaging bag is extruded, the liquid or air in the inside of the packaging bag also extrudes the baffle 17, so that the liquid is prevented from entering the inside of the valve.

[0034] Embodiments of the present application are presented for the purpose of example and description, and are not exhaustive or limit the present application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present application, and to enable those of ordinary skill in the art to understand the present application so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A liquid packing bag inlet valve with non-return function, comprising a mounting plate (1), characterized in that: The middle position of the mounting plate (1) is provided with a column (2), the inside of the column (2) is provided with a flow chamber (3), the middle position of the flow chamber (3) is provided with a mounting rod (4), the top end of the mounting rod (4) is provided with a first check component, the bottom end of the mounting rod (4) is provided with a second check component, the inside of the flow chamber (3) is provided with a sealing ring (5) above the mounting rod (4), the inner side of the sealing ring (5) is provided with a slope, the bottom end of the inner side of the sealing ring (5) is provided with a first sealing pad (6), and the top end of the column (2) is threadedly connected with a sealing cover (7).

2. The liquid inlet valve of the liquid packaging bag with the non-return function according to claim 1, characterized in that: The first check component comprises a first mounting seat (8), the first mounting seat (8) is arranged at the middle position of the top end of the mounting rod (4), the top end of the first mounting seat (8) is provided with a first sliding groove (9), the first sliding groove (9) is slidably provided with a first connecting rod (10), the top end of the first connecting rod (10) is provided with an arc valve (11), the bottom end of the first connecting rod (10) is provided with a compression spring (12), and the other end of the compression spring (12) is connected with the bottom end of the first sliding groove (9).

3. The liquid-packing bag inlet valve with the non-return function according to claim 2, wherein: The top end of the arc valve (11) is tightly attached to the first sealing pad (6).

4. The liquid-packing bag inlet valve with the non-return function according to claim 2, wherein: The bottom end of the first connecting rod (10) is provided with a second sealing pad (13).

5. The liquid-packing bag inlet valve with the non-return function according to claim 1, wherein: The second check component comprises a second mounting seat (14), the second mounting seat (14) is arranged at the middle position of the bottom end of the mounting rod (4), the bottom end of the second mounting seat (14) is provided with a second sliding groove (15), the second sliding groove (15) is slidably provided with a second connecting rod (16), the bottom end of the second connecting rod (16) is provided with a baffle (17), the top end of the second connecting rod (16) is provided with a tension spring (18), and the other end of the tension spring (18) is connected with the top end of the second sliding groove (15).

6. The liquid-packing bag inlet valve with the non-return function according to claim 5, wherein: The top end of the baffle (17) is tightly attached to the bottom end of the column (2).

7. The liquid-packing bag inlet valve with the non-return function according to claim 5, wherein: The top end of the second connecting rod (16) is provided with a third sealing pad (19).

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