A colloid two-stage quantitative filling filling machine and filling method

Abstract

The present invention provides a colloid two-stage quantitative filling filling machine and a filling method, the colloid two-stage quantitative filling filling machine comprises: a barrel, a control valve and a metering chamber, characterized in that: the lower part of the barrel is connected to a first pipeline; the end of the first pipeline is connected to the control valve; the control valve comprises a control valve housing and a control valve piston; the lower end of the control valve is connected to a second pipeline; the end of the second pipeline is connected to the metering chamber, which is composed of a metering cylinder body and a metering piston; a first one-way valve and a second one-way valve are arranged on the first pipeline, a third pipeline is connected between the first one-way valve and the second one-way valve; the end of the third pipeline is connected to a secondary chamber, which is composed of a secondary cylinder body and a secondary piston. The colloid two-stage quantitative filling filling machine and the filling method of the present invention avoid the generation of vacuum in the metering chamber, and improve the accuracy of the filling amount of the gel product.

Description

Technical Field

[0001] The invention relates to the technical field of colloid filling, and in particular to a colloid two-stage quantitative filling filling machine and a filling method. Background Art

[0002] Colloid filling machines are widely used in the production of medicine, food, cosmetics and other industries. At present, most colloid filling machines use a piston-cylinder structure to extract a certain amount of colloid and then inject it into the product bottle, so as to achieve the purpose of quantitatively adding colloid products to the packaging bottle. Its working principle is as follows Figures 1-2 As shown: the gel is installed in the barrel 1, the barrel 1 is installed on the control valve housing 2, the metering chamber is composed of the metering cylinder 4 and the metering piston 5. Under the control of the control circuit, when the control valve piston 3 moves to the right position, the barrel 1 is connected with the metering cylinder 4, and the metering piston 5 is driven by the piston rod 6 to move as shown in the figure. Figure 1 The solid arrow in the middle moves downward, so that the gel is as shown in Figure 1 As shown by the dashed arrow in the middle, it enters the metering cylinder 4; when the control valve piston 3 moves to the left position, the metering piston 5 is driven by the piston rod 6 as shown in the figure. Figure 2 The solid arrow in the middle moves upward, thereby squeezing the gel in the metering chamber. The gel ejected is as follows: Figure 2 The dotted arrow in the middle is fed into the packaging bottle 8 through the discharge pipe 7.

[0003] However, the method of using the piston-cylinder structure to quantitatively extract a certain amount of gel by pushing the metering piston 5 and then injecting it into the packaging bottle 8 still has defects in actual use: when the fluidity of the gel is poor, or the extraction speed of the gel is fast, a vacuum is easily generated in the metering cavity of the metering cylinder 4 and the metering piston 5, thereby affecting the accuracy of the extrusion amount of the gel, and further affecting the final product filling quantity quality control. The above defects are problems that need to be solved urgently, especially for pharmaceutical products, the filling quantity of the product must be strictly controlled. Summary of the invention

[0004] The present invention is made to solve the above-mentioned problem, and aims to provide a colloid two-stage quantitative filling filling machine and a filling method which can avoid the generation of vacuum in the metering cavity.

[0005] The colloid two-stage quantitative filling and filling machine provided by the present invention comprises: a barrel, a control valve and a metering chamber, and is characterized in that: a first pipeline is connected to the bottom of the barrel; the end of the first pipeline is connected to the control valve; the control valve comprises a control valve housing and a control valve piston; the lower end of the control valve is connected to the second pipeline; the end of the second pipeline is connected to the metering chamber, and the metering chamber is composed of a metering cylinder body and a metering piston; a first one-way valve and a second one-way valve are arranged on the first pipeline, and a third pipeline is connected between the first one-way valve and the second one-way valve; the end of the third pipeline is connected to the secondary chamber, and the secondary chamber is composed of a secondary cylinder body and a secondary piston.

[0006] The colloid two-stage quantitative filling and filling machine provided by the present invention also has the following characteristics: the second-stage piston is pushed by a cylinder, and the piston rod of the cylinder is fixedly connected to the second-stage piston.

[0007] The colloid two-stage quantitative filling and filling machine provided by the present invention also has the following feature: wherein the first one-way valve is located at the connection between the discharge port of the barrel and the first pipeline.

[0008] The colloid two-stage quantitative filling and filling machine provided by the present invention also has the following feature: wherein the first one-way valve and the second one-way valve are both electric one-way valves.

[0009] The present invention also provides a filling method applied to the above-mentioned colloid two-stage quantitative filling filling machine, which is characterized by: step A and step B are performed alternately, step A is: the first one-way valve is opened, the second one-way valve is closed, the secondary piston moves in the direction away from the third pipeline, and the metering piston moves in the direction close to the second pipeline; step B is: the second one-way valve is opened, the first one-way valve is closed, the secondary piston moves in the direction close to the third pipeline, and the metering piston moves in the direction away from the second pipeline.

[0010] Functions and effects of the present invention:

[0011] The colloid two-stage quantitative filling and filling machine of the present invention is provided with a metering chamber composed of a metering cylinder body and a metering piston, and a first one-way valve and a second one-way valve are also provided between the barrel and the control valve, and a secondary chamber composed of a secondary cylinder body and a secondary piston is connected between the first one-way valve and the second one-way valve. Compared with the prior art, the present invention changes the gel entering the metering chamber from suction to forced pushing due to the push of the secondary piston, thereby avoiding the generation of vacuum in the metering chamber of the metering cylinder body and the metering piston, thereby improving the accuracy of product filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a colloid filling machine in the prior art (colloid enters the metering chamber);

[0013] Figure 2It is a structural schematic diagram of a colloid filling machine in the prior art (colloid is pressed into a packaging bottle);

[0014] Figure 3 Schematic diagram of the structure of the colloid two-stage quantitative filling and filling machine in the embodiment of the present invention (the colloid enters the metering chamber);

[0015] Figure 4 It is a structural schematic diagram of a colloid two-stage quantitative filling and filling machine in an embodiment of the present invention (the colloid is pressed into the packaging bottle). DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments are combined with the accompanying drawings to specifically describe the colloid two-stage quantitative filling filling machine and filling method of the present invention.

[0017] <Example>

[0018] like Figure 3-4 As shown, the colloid two-stage quantitative filling filling machine 100 of this embodiment includes: a barrel 1, a control valve, a metering chamber, a piston rod 6, a first one-way valve 9, a second one-way valve 10, a two-stage chamber, a cylinder 13, a first pipeline 14, a second pipeline 15, and a third pipeline 16.

[0019] The barrel 1 is used to contain the gel to be filled. The control valve comprises a control valve housing 2 and a control valve piston 3. The control valve piston 3 is movably arranged in the control valve housing, electrically connected to the electric drive device and moved by electric drive. The control valve piston 3 has a straight channel that can connect the upper port and the lower port of the control valve housing 2 and a bending channel that can connect the lower port of the control valve housing 2 and the side discharge pipeline 7. The lower part of the barrel 1 is connected to the first pipeline 14, the end of the first pipeline 14 is connected to the control valve housing 2, and the lower end of the control valve housing 2 is connected to the second pipeline 15. The end of the second pipeline 15 is connected to the metering chamber, which is composed of a metering cylinder body 4 and a metering piston 5. The metering piston 5 is fixedly connected to the piston rod 6, and the piston rod 6 is driven by an electric drive power device (such as a cylinder) that can realize linear reciprocating motion to move up and down in the metering cylinder body 4. The first pipeline 14 is provided with a first check valve 9 and a second check valve 10. The first check valve 9 is located at the connection between the discharge port of the barrel 1 and the first pipeline 14. A third pipe 16 is connected between the first check valve 9 and the second check valve 10. The end of the third pipe 16 is connected to a secondary chamber, which is composed of a secondary cylinder body 11 and a secondary piston 12. The secondary piston 12 is pushed by the cylinder 12. The cylinder 12 is a cylinder with a piston rod. The piston rod of the cylinder 12 is fixedly connected to the secondary piston. The volume of the secondary chamber formed by the secondary piston 12 and the secondary cylinder body 11 is greater than the volume of the metering chamber formed by the metering cylinder body 4 and the metering piston 5.

[0020] The colloid two-stage quantitative filling machine 100 of the present embodiment further includes an electrical control switch and a power supply (not shown in the figure), and realizes the colloid two-stage quantitative filling action through electrical automation.

[0021] This embodiment also discloses a filling method applied to the above-mentioned colloid two-stage quantitative filling filling machine 100, in which step A and step B are performed alternately.

[0022] like Figure 4 As shown, step A: the control valve piston 3 moves to the left position, and the first one-way valve 9 is opened, the second one-way valve 10 is closed, the lower port of the control valve housing 2 is connected with the side discharge pipeline 7 through a bending channel, and the metering piston 5 moves upward under the drive of the power device ( Figure 4 The solid arrow is used to indicate the gel between the metering cylinder 4 and the metering piston in the metering chamber, and the gel is sent into the packaging bottle 8 through the discharge pipe 7 ( Figure 4 At the same time, the cylinder 13 drives the secondary piston 12 to move to the right ( Figure 4 The solid arrow in the figure shows the gel in the barrel, which cooperates with the secondary cylinder 11 to suck the gel in the barrel into the secondary cavity ( Figure 4 The dashed arrows are used to indicate this).

[0023] like Figure 3 As shown, step B: the control valve piston 3 moves to the right position, so that the upper port and the lower port of the control valve housing 2 are connected via a straight channel, the second one-way valve 10 is opened, the first one-way valve 9 is closed, and the cylinder 13 pushes the secondary piston 12 to move leftward ( Figure 3 The solid arrow in the figure pushes out the gel in the secondary chamber, and at the same time, the metering piston 5 moves downwards driven by the piston rod 6 ( Figure 3 The solid arrows are used to indicate this), so that the gel enters the metering cavity formed by the material cylinder 4 and the piston 5 ( Figure 4 The dashed arrows are used to indicate this).

[0024] In actual situations, the volume of the secondary cavity formed by the cooperation of the secondary piston 12 and the secondary cylinder 11 contains a certain degree of vacuum, while in this embodiment, the volume of the secondary cavity formed by the cooperation of the secondary piston 12 and the secondary cylinder 11 is set to be larger than the volume of the metering cavity formed by the metering cylinder 4 and the metering piston 5, so that the vacuum will be automatically eliminated during the extrusion process, and the accuracy is finally guaranteed. The above filling method, through the push of the secondary piston, changes the gel into the metering cavity from suction to forced pushing, avoiding the generation of vacuum in the metering cavity of the metering cylinder and the metering piston, thereby improving the accuracy of product filling.

[0025] The above implementation is a preferred example of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A colloid two-stage quantitative filling machine, comprising: The barrel, control valve and metering chamber are characterized by: The lower part of the barrel is connected to a first pipeline; The end of the first pipeline is connected to a control valve; The control valve comprises a control valve housing and a control valve piston, wherein the control valve piston is movably arranged in the control valve housing, electrically connected to an electric drive device and moved by electric drive, and the control valve piston has a straight channel connecting an upper port and a lower port of the control valve housing and a bending channel connecting a lower port of the control valve housing and a side discharge pipeline; The end of the first pipeline is connected to the control valve housing; The lower end of the control valve is connected to the second pipeline; The end of the second pipe is connected to the metering chamber, which is composed of a metering cylinder and a metering piston. The metering piston is fixedly connected to a piston rod, and the piston rod is driven by an electric drive power device that realizes linear reciprocating motion to move up and down in the metering cylinder; The first pipeline is provided with a first one-way valve and a second one-way valve, the first one-way valve is located at the connection between the discharge port of the barrel and the first pipeline, and a third pipeline is connected between the first one-way valve and the second one-way valve; The end of the third pipe is connected to a secondary cavity, which is composed of a secondary cylinder body and a secondary piston. The secondary piston is pushed by a cylinder. The cylinder is a cylinder with a piston rod. The piston rod of the cylinder is fixedly connected to the secondary piston. The volume of the secondary cavity formed by the secondary piston and the secondary cylinder body is greater than the volume of the metering cavity formed by the metering cylinder body and the metering piston.

2. The colloid two-stage quantitative filling and filling machine according to claim 1, characterized in that: in, The secondary piston is pushed by a cylinder, and a piston rod of the cylinder is fixedly connected to the secondary piston.

3. The colloid two-stage quantitative filling and filling machine according to claim 1, characterized in that: in, The first one-way valve is located at the connection between the discharge port of the barrel and the first pipeline.

4. The colloid two-stage quantitative filling and filling machine according to claim 1, characterized in that: in, The first one-way valve and the second one-way valve are both electric one-way valves.

5. A filling method, applied to the colloid two-stage quantitative filling filling machine as claimed in any one of claims 1 to 4, characterized in that: Step A and step B are performed alternately. The step A is as follows: the first one-way valve is opened, the second one-way valve is closed, the secondary piston moves in a direction away from the third pipeline, and the metering piston moves in a direction close to the second pipeline; The step B is as follows: the second one-way valve is opened, the first one-way valve is closed, the secondary piston moves toward the direction approaching the third pipeline, and the metering piston moves away from the second pipeline.

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