Filling device and filling, cleaning and sterilizing method thereof

Abstract

The application discloses a filling device, which comprises a liquid supply mechanism and a filling channel communicated with the liquid supply mechanism, wherein a throttle part, a metering valve and a back-suction mechanism are arranged in the filling channel in sequence along the flow direction of the filling medium; the back-suction mechanism comprises a back-suction channel and a back-suction valve, two ends of the back-suction channel are communicated with two places of the upstream and downstream of the filling channel respectively, and the back-suction valve is arranged on the back-suction channel. The application also discloses a filling, cleaning and sterilizing method of the filling device, which comprises the following steps: closing the back-suction valve, opening the metering valve and filling; after the filling is completed, closing the metering valve, opening the back-suction valve and back-sucking the filling medium; opening each valve, cleaning the filling channel and the back-suction channel; opening the metering valve and the back-suction valve and sterilizing the filling channel, the back-suction channel and the matching parts of each valve and the filling channel. The filling device and the filling, cleaning and sterilizing method thereof have the advantages of high filling precision, no medium dripping phenomenon and low liquid waste rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food and medicine packaging machinery equipment, in particular to a filling device and a filling, cleaning and sterilizing method thereof. BACKGROUND

[0002] The blow-filling-seal technology is a kind of aseptic packaging technology, and the equipment can usually produce dozens (10-60) of products at a time. Since the number of filling heads is large, and in order to realize CIP (cleaning) and SIP (sterilization), the time-pressure method is usually adopted for filling, that is, the filling amount is controlled by controlling the opening time of the filling valve under a certain filling pressure. In order to realize high-precision filling, the filling valve needs to have high response speed and repeatability, and ordinary electromagnetic valves or pneumatic valves are difficult to meet the requirements.

[0003] The existing filling equipment has the problem that the filling needle will appear medium dripping phenomenon during the filling process, which causes liquid waste and affects the filling precision. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a filling device and a filling, cleaning and sterilizing method thereof, which have high precision, do not have medium dripping phenomenon, and have low liquid waste rate.

[0005] To solve the above technical problems, the present application adopts the following technical solutions:

[0006] A filling device, comprising a liquid supply mechanism and a filling channel in communication with the liquid supply mechanism, wherein a throttling portion, a metering valve and a back-suction mechanism are arranged in sequence along the flow direction of the filling medium on the filling channel, the back-suction mechanism comprises a back-suction channel and a back-suction valve, both ends of the back-suction channel are in communication with the upstream and downstream of the filling channel respectively, and the back-suction valve is arranged on the back-suction channel.

[0007] As a further improvement of the above technical solutions:

[0008] The back-suction channel is in the shape of a V, and the back-suction valve is arranged at the acute angle of the back-suction channel.

[0009] The throttling portion is in the shape of a V, and a throttling valve is arranged at the acute angle of the throttling portion.

[0010] A parallel channel is further arranged at the acute angle of the throttling portion.

[0011] The filling channel has metering portions which are all in the shape of a V, and the metering valve is arranged at the acute angle of the metering portion.

[0012] The filling channel comprises a throttling section, a metering section and a filling section which are connected in sequence, the throttling section is in communication with the liquid supply mechanism, the throttling portion is arranged on the throttling section, the metering portion is arranged on the metering section, and both ends of the back-suction channel are in communication with the upstream and downstream of the filling section respectively.

[0013] The filling device further comprises a split upstream seat and a downstream seat, and a side seat split on one side of the upstream seat and the downstream seat, the throttle section is penetrated in the upstream seat, the sharp corner of the throttle section is located at the joint of the upstream seat and the side seat, the metering section and the filling section are penetrated in the downstream seat, the sharp corners of the metering section and the back suction channel are located at the joint of the downstream seat and the side seat, and the throttle valve, the metering valve and the back suction valve are installed on the side seat.

[0014] The throttle valve, the metering valve and the back suction valve are all diaphragm valves, and the diaphragm of each valve is clamped at the joint of the upstream seat and the downstream seat and the side seat.

[0015] The liquid supply mechanism comprises a main channel and a plurality of branch channels in communication with the main channel, and the filling channel is provided with a plurality of branch channels in one-to-one correspondence in communication.

[0016] A filling, cleaning and sterilizing method of the filling device, characterized in that the method comprises the following steps:

[0017] Filling: closing the back suction valve and opening the metering valve for filling;

[0018] Back suction: after filling is completed, the metering valve is closed, and the back suction valve is opened to back suction the medium in the filling needle;

[0019] Cleaning: opening the metering valve and the back suction valve to clean the filling channel and the back suction channel;

[0020] Sterilization: opening the metering valve and the back suction valve to sterilize the filling channel, the back suction channel and the matching part of each valve and the filling channel.

[0021] Compared with the prior art, the filling device has the following advantages:

[0022] In the filling device, the back suction valve is closed and the metering valve is opened during filling, the metering valve is closed after filling is completed, and then the back suction valve is opened to realize back suction and prevent the filling needle from dripping, and then the back suction valve is closed before or at the same time as the metering valve is opened next time. During cleaning, the metering valve and the back suction valve are completely opened to increase the flow of cleaning liquid and improve the cleaning effect of the filling channel and the back suction channel. During sterilization, the metering valve and the back suction valve are completely opened, and the matching part of each valve and the filling channel is sterilized to improve the sterilization effect. The throttle section is arranged upstream of the metering valve, there is a pressure difference due to throttling, the metering valve is arranged upstream of the back suction mechanism, and the pressure is blocked by the metering valve, which does not affect back suction. The filling device has high filling precision, does not appear medium dripping phenomenon, and has low liquid waste rate.

[0023] The filling, cleaning and sterilizing method of the application, when filling, the back suction valve is closed, the metering valve is opened, after filling is completed, the metering valve is closed, then the back suction valve is opened, back suction is realized, dripping of the filling needle is prevented, then the back suction valve is closed before or at the same time when the metering valve is opened next time. When cleaning, the metering valve and the back suction valve are both completely opened, so that the flow of the cleaning liquid is increased, and the cleaning effect on the filling channel and the back suction channel is improved. When sterilizing, the metering valve and the back suction valve are both completely opened, the matching parts of the valves and the filling channel are all sterilized, and the sterilizing effect is improved. The throttle valve is arranged upstream of the metering valve, there is a pressure difference due to throttling, the metering valve is arranged upstream of the back suction mechanism, the pressure is blocked by the metering valve, and the back suction is not affected. The filling, cleaning and sterilizing method has high filling precision, no medium dripping phenomenon, low liquid waste rate, and good cleaning and sterilizing effect. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic view of a front structure of the filling device of the application.

[0025] Figure 2 is a schematic view of a side structure of the filling device of the application.

[0026] Figure 3 is Figure 2 is an enlarged view of A in FIG.

[0027] In the drawings, the following signs represent:

[0028] 1, liquid supply mechanism; 11, main channel; 12, branch channel; 2, filling channel; 21, throttling section; 22, metering section; 23, filling section; 3, throttle valve; 4, metering valve; 5, back suction mechanism; 51, back suction channel; 52, back suction valve; 6, throttling part; 61, parallel channel; 7, metering part; 8, upstream seat; 9, downstream seat; 91, side seat; 92, diaphragm. DETAILED DESCRIPTION

[0029] The application will be further described in detail below in combination with the drawings and specific examples.

[0030] As shown in the disclosure and claims, unless the context clearly indicates otherwise, the words "one", "an", "a", and / or "the" do not mean to specify a single number, but can also include a plurality. The words "first", "second", and similar words used in the disclosure do not mean any order, number, or importance, but are only used to distinguish different components. Similarly, the words "include" or "contain" and similar words mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, and do not exclude other elements or objects. The words "connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0031] Embodiment One

[0032] Figures 1 to 3 An embodiment of the filling device of the present application is shown, which comprises a liquid supply mechanism 1 and a filling channel 2 in communication with the liquid supply mechanism 1, wherein a throttling portion 6, a metering valve 4 and a back suction mechanism 5 are arranged in sequence along the flow direction of the filling medium on the filling channel 2, the back suction mechanism 5 comprises a back suction channel 51 and a back suction valve 52, both ends of the back suction channel 51 are in communication with two places upstream and downstream of the filling channel 2 respectively, and the back suction valve 52 is arranged on the back suction channel 51.

[0033] During filling, the back suction valve 52 is closed, the metering valve 4 is opened, after filling is completed, the metering valve 4 is closed, then the back suction valve 52 is opened to realize back suction, prevent the filling needle from hanging drops, then the back suction valve 52 is closed before or at the same time when the metering valve 4 is opened next time. During cleaning, the metering valve 4 and the back suction valve 52 are both completely opened to increase the flow of the cleaning liquid and improve the cleaning effect on the filling channel 2 and the back suction channel 51. During sterilization, the metering valve 4 and the back suction valve 52 are both completely opened, the matching parts of each valve and the filling channel are all sterilized to improve the sterilization effect. The throttling portion 6 is arranged upstream of the metering valve 4, there is a pressure difference due to throttling, the metering valve 4 is arranged upstream of the back suction mechanism 5, the pressure is blocked by the metering valve 4 and does not affect back suction. The filling device has high filling precision, does not appear medium hanging drop phenomenon and has low liquid waste rate.

[0034] In this embodiment, as shown in Figure 2 , the back suction channel 51 is in V shape, and the back suction valve 52 is arranged at the acute angle of the back suction channel 51. During cleaning, the back suction valve 52 is opened to enable the cleaning liquid to enter the back suction channel 51 and clean the back suction channel 51 thoroughly.

[0035] In this embodiment, the throttling portion 6 is in V shape, and the throttling valve 3 is arranged at the acute angle of the throttling portion 6. The throttling portion 6 is arranged in V shape to facilitate the arrangement of the throttling valve 3.

[0036] In this embodiment, as shown in Figure 3 , a parallel channel 61 is further arranged at the acute angle of the throttling portion 6. During filling, the throttling valve 3 can be completely closed, and the filling medium flows through the parallel channel 61. In this way, the throttling point does not change during filling, and the filling process is more stable. Moreover, the metering valve 4, the metering valve 4 and the opening back suction valve 52 are arranged vertically and spaced apart, the throttling is at the upper end, there is no pressure difference influence, and the risk of drops is lower.

[0037] In this embodiment, the filling channel 2 has a metering portion 7 in V shape, and the metering valve 4 is arranged at the acute angle of the metering portion 7. The metering portion 7 is arranged in V shape to facilitate the arrangement of the metering valve 4.

[0038] In the embodiment, the filling channel 2 comprises a throttling section 21, a metering section 22 and a filling section 23 connected in sequence, the throttling section 21 is communicated with the liquid supply mechanism 1, the throttling part 6 is arranged on the throttling section 21, the metering part 7 is arranged on the metering section 22, and the two ends of the back suction channel 51 are communicated with the upstream and downstream of the filling section 23 respectively.

[0039] In the embodiment, the filling device further comprises an upstream seat 8 and a downstream seat 9 spliced together and a side seat 91 spliced to one side of the upstream seat 8 and the downstream seat 9, the throttling section 21 penetrates the upstream seat 8, the sharp corner of the throttling part 6 is located at the joint of the upstream seat 8 and the side seat 91, the metering section 22 and the filling section 23 penetrate the downstream seat 9, the sharp corners of the metering section 22 and the back suction channel 51 are located at the joint of the downstream seat 9 and the side seat 91, and the throttling valve 3, the metering valve 4 and the back suction valve 52 are all installed on the side seat 91.

[0040] The sharp corners of the throttling section 21, the metering part 7 and the back suction channel 51 are all located at the joint of the downstream seat 9 and the side seat 91, the throttling valve 3, the metering valve 4 and the back suction valve 52 are all installed on the side seat 91 and connected with the sharp corners of the throttling section 21, the metering part 7 and the back suction channel 51 respectively, so that when installed, the throttling valve 3, the metering valve 4 and the back suction valve 52 are first installed on the side seat 91, and then the side seat 91 is spliced with the upstream seat 8 and the downstream seat 9. Specifically, the upstream seat 8 and the downstream seat 9 are arranged in an up-down manner.

[0041] In the embodiment, the throttling valve 3, the metering valve 4 and the back suction valve 52 are all diaphragm valves, and the diaphragm 92 of each valve is clamped at the joint of the upstream seat 8 and the downstream seat 9 and the side seat 91. At this time, the diaphragm 92 of each valve can be independently arranged or integrally arranged.

[0042] In the embodiment, the liquid supply mechanism 1 comprises a main channel 11 and a plurality of branch channels 12 communicated with the main channel 11, and the filling channel 2 is provided with a plurality of branch channels 12 corresponding to the branch channels 12 one by one. The filling is carried out through the plurality of filling channels 2, so as to improve the filling efficiency.

[0043] The sharp corner of the throttling part 6 is provided with a parallel channel 61. The parallel channel 61 is arranged in a V shape, and the parallel channel 61 is arranged to be smaller than the filling channel 2, so as to reduce the flow during filling. In this way, the medium flow through each parallel channel 61 is more uniform during filling of each filling channel 2, the filling process is more stable, and the precision of the filling is higher.

[0044] When filling, the back suction valve 52 is closed, the metering valve 4 is opened, after filling is completed, the metering valve 4 is closed, then the back suction valve 52 is opened, back suction is realized, dripping of the filling needle is prevented, then the back suction valve 52 is closed before or simultaneously with the next time the metering valve 4 is opened. When cleaning, the throttle valve 3, the metering valve 4 and the back suction valve 52 are all completely opened, so as to increase the flow of the cleaning liquid and improve the cleaning effect on the filling channel 2 and the back suction channel 51. When sterilizing, the throttle valve 3, the metering valve 4 and the back suction valve 52 are all completely opened, the matching parts of the valves and the filling channel are all sterilized, so as to improve the sterilizing effect. The throttle valve 3 is arranged at the upstream of the metering valve 4, there is a pressure difference due to throttling, the metering valve 4 is arranged at the upstream of the back suction mechanism 5, the pressure is blocked by the metering valve 4, and the back suction is not affected.

[0045] Embodiment two:

[0046] A filling, cleaning and sterilizing method of the filling device, characterized in that it comprises the following steps:

[0047] Filling: the back suction valve 52 is closed, the metering valve 4 is opened for filling;

[0048] Back suction: after filling is completed, the metering valve 4 is closed, the back suction valve 52 is opened, and the medium of the filling needle is back suctioned;

[0049] Cleaning: the metering valve 4 and the back suction valve 52 are opened, and the filling channel 2 and the back suction channel 51 are cleaned;

[0050] Sterilizing: the metering valve 4 and the back suction valve 52 are opened, and the filling channel 2, the back suction channel 51 and the matching parts of the valves and the filling channel are sterilized.

[0051] When filling, the back suction valve 52 is closed, the metering valve 4 is opened, after filling is completed, the metering valve 4 is closed, then the back suction valve 52 is opened, back suction is realized, dripping of the filling needle is prevented, then the back suction valve 52 is closed before or simultaneously with the next time the metering valve 4 is opened. When cleaning, the throttle valve 3, the metering valve 4 and the back suction valve 52 are all completely opened, so as to increase the flow of the cleaning liquid and improve the cleaning effect on the filling channel 2 and the back suction channel 51. When sterilizing, the throttle valve 3, the metering valve 4 and the back suction valve 52 are all completely opened, the matching parts of the valves and the filling channel are all sterilized, so as to improve the sterilizing effect. The throttle valve 3 is arranged at the upstream of the metering valve 4, there is a pressure difference due to throttling, the metering valve 4 is arranged at the upstream of the back suction mechanism 5, the pressure is blocked by the metering valve 4, and the back suction is not affected.

[0052] Specifically, when cleaning, the throttle valve 3, the metering valve 4 and the back suction valve 52 are opened, and the filling channel 2 and the back suction channel 51 are cleaned; when sterilizing, the throttle valve 3, the metering valve 4 and the back suction valve 52 are opened, and the filling channel 2, the back suction channel 51 and the matching parts of the valves and the filling channel are sterilized.

[0053] Although the present application has been described in connection with the preferred embodiment thereof with reference to the drawings, it is not to be limited to the details described therein but can be modified in various ways which are within the scope of the present application and can be apparent to those skilled in the art without departing from the spirit of the application.

Claims

1. A filling device, characterized in that: The system includes a liquid supply mechanism (1) and a filling channel (2) connected to the liquid supply mechanism (1). The filling channel (2) is provided with a throttling section (6), a metering valve (4) and a back suction mechanism (5) arranged sequentially along the flow direction of the filling medium. The back suction mechanism (5) includes a back suction channel (51) and a back suction valve (52). The two ends of the back suction channel (51) are connected to the upstream and downstream of the filling channel (2) respectively. The back suction valve (52) is located on the back suction channel (51). The throttling section (6) is provided with a throttling valve (3) and a parallel channel (61). The liquid supply mechanism (1) includes a main channel (11) and multiple branch channels (12) connected to the main channel (11). The filling channel (2) is provided with multiple branch channels (12) that are connected to each other. The main channel (11) is inclined.

2. The filling device according to claim 1, characterized in that: The back suction channel (51) is V-shaped, and the back suction valve (52) is located at the sharp corner of the back suction channel (51).

3. The filling device according to claim 2, characterized in that: The throttling section (6) is V-shaped, and a throttling valve (3) is provided at the pointed corner of the throttling section (6).

4. The filling device according to claim 3, characterized in that: The throttling section (6) is also provided with a parallel channel (61) at its sharp corner.

5. The filling apparatus according to claim 3, characterized in that: The filling channel (2) has a metering section (7) that is V-shaped, and the metering valve (4) is located at the sharp corner of the metering section (7).

6. The filling apparatus according to claim 5, characterized in that: The filling channel (2) includes a throttling section (21), a metering section (22) and a filling section (23) connected in sequence. The throttling section (21) is connected to the liquid supply mechanism (1). The throttling part (6) is located on the throttling section (21). The metering part (7) is located on the metering section (22). The two ends of the back suction channel (51) are connected to the upstream and downstream of the filling section (23) respectively.

7. The filling apparatus according to claim 6, characterized in that: The filling device also includes an upstream seat (8) and a downstream seat (9) that are joined together, and a side seat (91) joined to one side of the upstream seat (8) and the downstream seat (9). The throttling section (21) runs through the upstream seat (8). The sharp corner of the throttling part (6) is located at the joint between the upstream seat (8) and the side seat (91). The metering section (22) and the filling section (23) run through the downstream seat (9). The sharp corners of the metering section (22) and the back suction channel (51) are both located at the joint between the downstream seat (9) and the side seat (91). The throttling valve (3), the metering valve (4), and the back suction valve (52) are all installed on the side seat (91).

8. The filling apparatus according to claim 7, characterized in that: The throttle valve (3), metering valve (4) and back suction valve (52) are all diaphragm valves, and the diaphragm (92) of each valve is sandwiched at the splice of the upstream seat (8) and the downstream seat (9) and the side seat (91).

9. A method for cleaning and sterilizing the filling apparatus according to any one of claims 1 to 8, characterized in that: Includes the following steps: Filling: Close the back suction valve (52) and open the metering valve (4) to fill; Back suction: After filling is completed, close the metering valve (4) and open the back suction valve (52) to back suction the filling medium; Cleaning: Open the metering valve (4) and the back suction valve (52) to clean the filling channel (2) and the back suction channel (51); Sterilization: Open the metering valve (4) and the back suction valve (52) to sterilize the filling channel (2), the back suction channel (51) and the mating parts of each valve and the filling channel.

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