Liquid injection mechanism for filling machine

Abstract

The utility model is applicable to the technical field of liquid injection mechanisms, and provides a liquid injection mechanism for a filling machine, which comprises a filling pipe, an air outlet component is sleeved on the outer side of the filling pipe, an outer pipe is sleeved on the outer side of the air outlet component, one end of the filling pipe is communicated with a filling head, the filling head is arranged inside the air outlet component when liquid is not injected, and the outer pipe is sleeved on the outer side of the air outlet component. During liquid injection, the filling head is exposed outside and is communicated with a device to be filled with liquid, the air outlet assembly comprises a backflow pipe, an air inlet is formed in one end of the backflow pipe, a liquid inlet is formed in one end of the outer pipe, an air outlet is formed in the side wall of the outer pipe, and the air outlet is communicated with the air outlet assembly. The sealing gasket is arranged, the sealing gasket is tightly attached to the opening of the empty container, a sealing environment is provided for the empty container, after liquid enters the container, gas can only flow out from the gas inlet, the gas cannot flow back in the flowing-out process, and the problem that the liquid is affected by gas backflow is solved.

Description

Technical Field

[0001] This utility model relates to the field of liquid injection mechanism technology, and more specifically, it relates to a liquid injection mechanism for a filling machine. Background Art

[0002] A filling line is an automated production equipment combination used to accurately fill liquid products into containers, and the filling machine is the liquid injection device in the filling line.

[0003] Currently, the workflow of a filling machine is as follows: the liquid to be filled is injected into the storage tank through pipes or other means, the empty container is transported to the filling position through the conveying system, the control system starts the filling head, the liquid begins to be filled, until the liquid is filled to the set position, the filled container continues to be transported to the next production stage under the action of the conveying system.

[0004] However, during the liquid filling process, air exists in the empty container, and the air will flow back and mix with the liquid. At this time, the air will occupy a certain space, resulting in a reduction in the space occupied by the liquid, which will affect the final liquid filling. A liquid injection mechanism for a filling machine is proposed to improve the existing problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a liquid injection mechanism for a filling machine.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A liquid injection mechanism for a filling machine includes a filling tube, an air outlet assembly sleeved on the outside of the filling tube, and an outer tube sleeved on the outside of the air outlet assembly.

[0008] One end of the filling tube is connected to a filling head. When no liquid is injected, the filling head is located inside the air outlet assembly. When liquid is injected, the filling head is exposed to the outside and is connected to the device to be injected.

[0009] The air outlet assembly includes a return pipe, and one end of the return pipe is provided with an air inlet.

[0010] One end of the outer tube is provided with a liquid inlet, which is connected to the filling tube. The side wall of the outer tube is provided with an air outlet, which is connected to the air outlet assembly.

[0011] By adopting the above technical solution, when no liquid is injected, the filling head is located inside the air outlet assembly. When liquid is injected, the filling head is exposed to the outside and connected to the device to be injected. In actual filling process, the device to be injected is mostly an empty container. During the liquid injection process, the filling head is connected to the empty container. At this time, the filling head is located inside the empty container, and the air inlet is also located inside the empty container. The gas inside the empty container will flow out to the outside of the liquid injection device through the air inlet. The outside of the liquid inlet is connected to a liquid storage device and a liquid injection pump. The liquid storage device is used to store liquid, and the liquid injection pump is used to provide power to the liquid injection mechanism.

[0012] The present invention is further configured such that: a tube seat is sleeved on the outer side of the air outlet component, a spring is sleeved on the outer side of the tube seat, and a first ring is provided below the spring.

[0013] The present invention is further configured such that: the first ring is sleeved on the outside of the air outlet component, and a sealing gasket is provided below the first ring, the sealing gasket being sleeved on the outside of the air outlet component.

[0014] By adopting the above technical solution, the sealing gasket is sleeved on the outside of the gas outlet component. During the liquid injection process, the sealing gasket fits into the inlet of the empty container, thus playing a sealing role and ensuring the discharge of gas.

[0015] The present invention is further configured such that: two sets of sleeves are symmetrically arranged at the middle position of the air outlet component and the pipe seat, and the two sets of sleeves are sleeved on the outside of the air outlet component.

[0016] The present invention is further configured such that a second ring is provided at the middle position of the two sets of sleeves, and the second ring is sleeved on the outside of the air outlet assembly.

[0017] The present invention is further configured such that: a leak-proof pad is provided at one end of the tube seat near the air outlet, the shape of the leak-proof pad is adapted to the shape of the tube seat, and the leak-proof pad is used to provide support for the device.

[0018] The present invention is further configured such that a fastener is provided at the middle position between the tube seat and the filling tube, and the fastener is used to fix the tube seat and the filling tube.

[0019] By adopting the above technical solution, the leak-proof pad is used to provide sealing and limiting functions for the device, ensuring the correct positional interval and relative position between the outer tube and the gas outlet component. When the position of the gas outlet component and the outer tube is correct, the liquid injection mechanism can play its role during the liquid injection process.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. By setting up a cooperative structure of air outlet component, filling tube and filling head, the liquid injection operation is guaranteed. At the same time, the air inlet is set inside the empty container, which facilitates the timely release of gas in the container, facilitates the discharge of gas and avoids the occurrence of gas backflow.

[0022] 2. By setting a sealing gasket, which fits tightly against the opening of the empty container, a sealed environment is provided for the empty container. After the liquid enters the container, the gas can only flow out from the inlet, and there will be no backflow during the outflow process, thus solving the problem of gas backflow affecting the liquid. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the liquid injection mechanism for a filling machine according to the present invention.

[0024] Figure 2 In this utility model Figure 1 A magnified structural diagram of area A in the middle.

[0025] Figure 3 In this utility model Figure 1 A magnified structural diagram of area B in the middle.

[0026] Explanation of reference numerals in the attached diagram: 1. Filler tube;

[0027] 2. Exhaust assembly; 21. Return pipe; 22. Inlet;

[0028] 3. Outer tube; 4. Liquid inlet; 5. Air outlet; 6. Spring; 7. Sealing gasket; 8. First ring; 9. Sleeve; 101. Second ring; 102. Leak-proof pad; 103. Pipe seat; 104. Filler head; 105. Fastener. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] Example 1, please refer to Figure 1-3 The present invention provides the following technical solution:

[0032] See Figure 1-3 A liquid injection mechanism for a filling machine includes a filling tube 1, an air outlet component 2 is sleeved on the outside of the filling tube 1, the air outlet component 2 can slide up and down along the inside of the filling tube 1, and an outer tube 3 is sleeved on the outside of the air outlet component 2.

[0033] By setting up the air outlet component 2 in conjunction with the filling tube 1, the liquid injection operation is guaranteed.

[0034] See Figure 1-3 One end of the filling tube 1 is connected to the filling head 104. When not filled with liquid, the filling head 104 is located inside the air outlet component 2. When filled with liquid, the filling head 104 is exposed to the outside and is connected to the device to be filled with liquid. In the actual filling process, the device to be filled with liquid is mostly an empty container.

[0035] See Figure 1-3 The air outlet assembly 2 includes a return pipe 21, one end of which is provided with an air inlet 22. During the liquid injection process, the filling head 104 is connected to the empty container. At this time, the filling head 104 is located inside the empty container, and the air inlet 22 is also located inside the empty container. The gas inside the empty container will flow out to the outside of the liquid injection device along the air inlet 22.

[0036] See Figure 1-3 One end of the outer tube 3 is provided with a liquid inlet 4, which is connected to the filling tube 1. The side wall of the outer tube 3 is provided with an air outlet 5, which is connected to the air outlet assembly 2. The outside of the liquid inlet 4 is connected to a liquid storage device and an injection pump. The liquid storage device is used to store liquid, and the injection pump is used to provide power to the injection mechanism.

[0037] See Figure 1-3 The outer side of the air outlet component 2 is fitted with a pipe seat 103, and the outer side of the pipe seat 103 is fitted with a spring 6. Below the spring 6 is a first ring 8, which is usually made of rubber material and has a certain elasticity.

[0038] See Figure 1-3 The first ring 8 is fitted on the outside of the gas outlet component 2. A sealing gasket 7 is provided below the first ring 8. The sealing gasket 7 is fitted on the outside of the gas outlet component 2. During the liquid injection process, the sealing gasket 7 fits against the inlet of the empty container, which plays a sealing role and provides a guarantee for the gas to be discharged.

[0039] By setting a sealing gasket 7, which fits tightly against the opening of the empty container, a sealed environment is provided for the empty container. After the liquid enters the container, the gas can only flow out from the air inlet 22, and the gas will not backflow during the outflow process.

[0040] See Figure 1-3 Two sets of sleeves 9 are symmetrically arranged at the middle position between the air outlet assembly 2 and the pipe seat 103, and the two sets of sleeves 9 are sleeved on the outside of the air outlet assembly 2.

[0041] See Figure 1-3A second ring 101 is provided in the middle of the two sets of sleeves 9. The second ring 101 is sleeved on the outside of the air outlet assembly 2. The combination structure of the sleeve 9 and the second ring 101 is used to fill the position between the pipe seat 103 and the air outlet assembly 2.

[0042] The second ring 101 is usually made of rubber material and has a certain degree of elasticity. In actual operation, the second ring 101 can absorb the vibration generated during the injection process, reduce the wear between parts, protect the key parts of the injection mechanism, and extend the service life of the injection mechanism.

[0043] See Figure 1-3 A leak-proof pad 102 is provided at one end of the tube seat 103 near the air outlet 5. The shape of the leak-proof pad 102 is adapted to the shape of the tube seat 103. The leak-proof pad 102 is used to provide a seal and limit the device, ensuring the correct positional interval and relative position between the outer tube 3 and the air outlet assembly 2. When the positions of the air outlet assembly 2 and the outer tube 3 are correct, the liquid injection mechanism can play its role during the liquid injection process.

[0044] See Figure 1-3 A fastener 105 is provided at the middle position between the pipe seat 103 and the filling tube 1. The fastener 105 is used to fix the pipe seat 103 and the filling tube 1. That is, during the installation of the device, the fastener 105 is used to fix and tighten the pipe seat 103 and the filling tube 1 to ensure that the pipe seat 103 and the filling tube 1 are installed correctly.

[0045] Specifically, when liquid is injected, the sealing gasket 7 is in contact with the opening of the empty container, and a lifting device is provided at the bottom of the empty container. As the lifting device gradually rises, the sealing gasket 7 remains in contact with the opening of the container, and the spring 6 located on the upper side of the sealing gasket 7 is compressed. At this time, the filling head 104 is exposed to the inside of the empty container, and the liquid inside the filling tube 1 flows out from the filling head 104 and into the inside of the empty container. Since the liquid flows into the inside of the empty container, there is no storage space for the gas inside the empty container, and the outlet of the empty container is sealed by the sealing gasket 7. The gas can only flow out from the air inlet 22 and finally out along the air outlet 5.

[0046] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A liquid injection mechanism for a filling machine, characterized in that: It includes a filling tube (1), an air outlet assembly (2) is sleeved on the outside of the filling tube (1), and an outer tube (3) is sleeved on the outside of the air outlet assembly (2). One end of the filling tube (1) is connected to a filling head (104). When no liquid is injected, the filling head (104) is located inside the air outlet assembly (2). When liquid is injected, the filling head (104) is exposed to the outside and is connected to the device to be injected. The air outlet assembly (2) includes a return pipe (21), and one end of the return pipe (21) is provided with an air inlet (22). One end of the outer tube (3) is provided with a liquid inlet (4), which is connected to the filling tube (1). The side wall of the outer tube (3) is provided with an air outlet (5), which is connected to the air outlet assembly (2).

2. The liquid injection mechanism for a filling machine according to claim 1, characterized in that: The outer side of the air outlet assembly (2) is fitted with a pipe seat (103), and the outer side of the pipe seat (103) is fitted with a spring (6). A first ring (8) is provided below the spring (6).

3. The liquid injection mechanism for a filling machine according to claim 2, characterized in that: The first ring (8) is fitted on the outside of the air outlet assembly (2), and a sealing gasket (7) is provided below the first ring (8). The sealing gasket (7) is fitted on the outside of the air outlet assembly (2).

4. The liquid injection mechanism for a filling machine according to claim 3, characterized in that: Two sets of sleeves (9) are symmetrically arranged at the middle position of the air outlet assembly (2) and the pipe seat (103), and the two sets of sleeves (9) are sleeved on the outside of the air outlet assembly (2).

5. The liquid injection mechanism for a filling machine according to claim 4, characterized in that: A second ring (101) is provided at the middle position of the two sets of sleeves (9), and the second ring (101) is sleeved on the outside of the air outlet assembly (2).

6. The liquid injection mechanism for a filling machine according to claim 5, characterized in that: A leak-proof pad (102) is provided at one end of the tube seat (103) near the air outlet (5). The shape of the leak-proof pad (102) is adapted to the shape of the tube seat (103). The leak-proof pad (102) is used to provide support for the device.

7. The liquid injection mechanism for a filling machine according to claim 6, characterized in that: A fastener (105) is provided at the middle position between the tube seat (103) and the filling tube (1), and the fastener (105) is used to fix the tube seat (103) and the filling tube (1).

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