Flow regulating valve

Abstract

The invention belongs to the technical field of packaging of filling machines, and discloses a flow regulating valve. A first inlet is formed in one end of the main valve body, a first outlet is formed in the other side of the main valve body, the first inlet and the first outlet are communicated through a first flow channel, a second inlet is formed in the first flow channel close to the first inlet, and a second outlet is formed in the first flow channel close to the first outlet. The second inlet communicates with the second outlet through a second flow channel, a first adjusting assembly is installed in the first flow channel and adjusts the sectional area of the first flow channel, and the diameter of the first flow channel is larger than that of the second flow channel; the problem that in the prior art, when the bottle is about to be filled with liquid, the liquid is splashed to pollute a bottle body due to too high flow speed is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of filling machine packaging, and in particular to a flow regulating valve. Background Art

[0002] In the filling machine industry, it is usually necessary to open the flow control valve. After opening, the flow rate of the flow control valve will remain constant at a constant flow rate, and the liquid is filled into the bottle mouth at a single flow rate. The flow control valve controls the timing of liquid filling and closing. Nowadays, the requirements for the position where the liquid is poured into the bottle are becoming increasingly stringent, and the flow rate of the filling liquid cannot be changed. When the liquid is about to be filled, the flow rate of the filling liquid is still large. If the liquid exceeds the filling position, it will cause resource waste and increase production costs. At the same time, due to the large flow rate, it will also cause splashing and contamination of the bottle body. If the liquid cannot reach the set position, it will result in insufficient loading. Summary of the Invention

[0003] The purpose of the present invention is to provide a flow regulating valve to solve the problem in the prior art that when the bottle is about to be filled with liquid, the liquid flows too fast, causing splashing and contamination of the bottle body.

[0004] To achieve this purpose, the present invention adopts the following technical solution: The present invention provides a flow control valve, including a main valve body, a first inlet is opened on one end of the main valve body, and a first outlet is opened on the other side, the first inlet and the first outlet are connected through a first flow channel, a second inlet is opened near the first inlet of the first flow channel, a second outlet is opened near the first outlet of the first flow channel, the second inlet and the second outlet are connected through a second flow channel, a first adjusting component is installed in the first flow channel, the first adjusting component adjusts the cross-sectional area of ​​the first flow channel, and the diameter of the first flow channel is larger than that of the second flow channel.

[0005] Preferably, a cylinder body is installed on one side of the main valve body, the first adjusting assembly includes a sealing head, a push rod, a first retaining ring and a spring, a partition is installed between the main valve body and the cylinder body, the cylinder body is surrounded by a compression chamber, a push plate is slidably installed in the compression chamber, a push rod is installed on the push plate, the push rod is passed through the partition, a sealing head is installed on the other end of the push rod, the spring is installed between the push plate and the partition, and the cylinder body is connected to the compressed air source.

[0006] Preferably, a tapered section is provided in the first flow channel, the sealing head abuts against the opening of the tapered section, and a corrugated sealing sheet is installed on the sealing head.

[0007] Preferably, a mounting groove is provided on a side of the cylinder body close to the main valve body, a first sealing ring is installed in the mounting groove, and the partition is sandwiched between the first sealing ring and the cylinder body.

[0008] Preferably, a fixing portion is installed on a side of the corrugated sealing sheet away from the sealing head, and the partition plate presses the fixing portion onto the main valve body.

[0009] Preferably, a second sealing ring is installed on the edge of the push plate, and the second sealing ring abuts against the inner wall of the compression chamber.

[0010] Preferably, a second adjusting assembly is installed on the second flow channel, and the second adjusting assembly includes an adjusting bolt, the adjusting bolt is screwed onto the main valve body, and the end of the adjusting bolt is inserted into the second flow channel.

[0011] Preferably, a cover plate is installed on the main valve body, a first screw hole is provided on the cover plate, and the adjusting bolt is screwed into the first screw hole.

[0012] Preferably, the cover plate is screwed onto the main valve body via a second bolt.

[0013] Preferably, a plug-in portion is formed at the bottom of the cover plate, a plug-in port is provided on the main valve body, the adjusting bolt is screwed into the plug-in port, a third sealing ring is installed in the plug-in port, and the plug-in portion abuts against the third sealing ring.

[0014] Beneficial effects: By setting the first flow channel and the second flow channel, when it is necessary to increase the liquid flow through the flow regulating valve, the first regulating component will open the first flow channel. At this time, it is in a fast filling state, and the liquid passing through the flow regulating valve will quickly fill the bottle body. When it is necessary to reduce the flow through the flow regulating valve, the first flow channel is closed by the first regulating component, and the liquid only flows from the second flow channel. At this time, the flow rate is reduced, which avoids liquid splashing and reduces production costs. The filling flow rate can be adjusted by setting the flow regulating valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the rapid filling of the flow control valve of the present invention;

[0016] Figure 2 This is a schematic diagram of slow filling of the flow control valve of the present invention;

[0017] Figure 3 This is a main body diagram of the second adjustment component of the present invention.

[0018] In the figure: 1. Main valve body; 11. First inlet; 12. First outlet; 13. First flow channel; 14. Second flow channel; 15. Second inlet; 16. Second outlet; 2. First adjusting assembly; 21. Sealing head; 22. Push rod; 23. Partition; 24. Push plate; 25. Spring; 26. Corrugated sealing sheet; 27. Fixed part; 3. Second adjusting assembly; 31. Adjusting bolt; 32. Cover plate; 321. Connecting part; 33. Second bolt; 4. Cylinder body; 5. First sealing ring; 6. Second sealing ring; 7. Third sealing ring. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0020] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0021] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0023] Under the existing technology, in the field of filling machines, the opening of the valve body cannot be flexibly adjusted during the filling process. When the liquid in the bottle is about to be filled, due to the large flow rate, the liquid in the bottle will splash out and cause the bottle body to be contaminated. If the flow rate is small during the filling process, the filling time will be longer, extending the production cycle, and it is necessary to expand the size of the filling machine to increase production.

[0024] In order to solve the above problems, Figures 1 to 3 As shown, the present invention provides a flow regulating valve, which includes a main valve body 1, a first inlet 11 is opened on one end of the main valve body 1, and a first outlet 12 is opened on the other side, the first inlet 11 and the first outlet 12 are connected through a first flow channel 13, a second inlet 15 is opened on the first flow channel 13 near the first inlet 11, a second outlet 16 is opened on the first flow channel 13 near the first outlet 12, the second inlet 15 and the second outlet 16 are connected through a second flow channel 14, a first adjusting component 2 is installed in the first flow channel 13, the first adjusting component 2 adjusts the cross-sectional area of ​​the first flow channel 13, and the diameter of the first flow channel 13 is larger than that of the second flow channel 14.

[0025] During the filling process, it is divided into fast filling and slow filling. During the fast filling process, the liquid flow in the filling machine becomes larger, wherein the first flow channel 13 and the second flow channel 14 are in a fully open state, which can quickly fill the bottle with liquid. If the liquid in the bottle is close to being filled, the first flow channel 13 is closed by the first regulating component 2, and the liquid can only be discharged from the second flow channel 14. In addition, due to the small cross-sectional area of ​​the second flow channel 14, the discharged liquid is greatly reduced, so that the filled liquid can be accurately controlled on the required scale line in the bottle, and at the same time, the flow rate of the liquid can be reduced, thereby reducing the splashing caused by the liquid impacting the liquid in the bottle. By setting a flow regulating valve that can adjust the flow rate, the probability of contaminating the bottle body after liquid splashing can be reduced, and the initial filling speed can also be guaranteed.

[0026] A cylinder body 4 is installed on one side of the main valve body 1 of the present invention, and the first adjusting component 2 includes a sealing head 21, a push rod 22, a first retaining ring and a spring 25. The partition 23 is installed between the main valve body 1 and the cylinder body 4. The cylinder body 4 is surrounded by a compression chamber, and a push plate 24 is slidably installed in the compression chamber. A push rod 22 is installed on the push plate 24, and the push rod 22 is passed through the partition 23. A sealing head 21 is installed at the other end of the push rod 22, and a spring 25 is installed between the push plate 24 and the partition 23. The cylinder body 4 is connected to the compressed air source.

[0027] The sealing head 21 of the present invention is controlled by compressed air. When compressed gas is filled in the cylinder 4, the push plate 24 will be pushed, thereby pushing the push rod 22 to move, and the push rod 22 will push the sealing head 21 at the front end to move, and the sealing head 21 will abut on the opening of the first flow channel 13, so that the first flow channel 13 is cut off, reducing the liquid flow through the flow regulating valve, and the liquid flows out from the second flow channel 14, so that the flow regulating valve is switched from the fast filling state to the slow filling state, avoiding the problem of splashing and contaminating the bottle body when the liquid is at the bottle mouth position. At this time, the spring 25 is in a compressed state. If the compressed gas is extracted, the spring 25 will return to its initial state, and the push plate 24 will be pushed back by the spring 25, causing the push rod 22 to move, and finally causing the sealing head 21 to move in the opposite direction, so that the first flow channel 13 is opened, and the second flow channel 14 and the first flow channel 13 simultaneously transport liquid, so that the flow regulating valve is switched back to the fast filling state. The flow regulating valve can be controlled to switch back and forth by compressed gas and spring 25.

[0028] A tapered section is provided in the first flow channel 13, and the sealing head 21 abuts against the opening of the tapered section. A corrugated sealing sheet 26 is installed on the sealing head 21. When the push rod 22 pushes the sealing head 21 to perform the sealing operation, the corrugated sealing sheet 26 will unfold to adapt to the length of the push rod 22. If the push rod 22 becomes shorter, the corrugated sealing sheet 26 will fold. The corrugated sealing sheet 26 is similar to the expansion and contraction of an accordion, which can adapt to the reciprocating movement of the push rod 22, so that the push rod 22 can maintain independent sealing of the cylinder body 4 and the main valve body 1 during the movement.

[0029] A mounting groove is provided on the side of the cylinder body 4 close to the main valve body 1. A first sealing ring 5 is installed in the mounting groove. A partition 23 is sandwiched between the first sealing ring 5 and the cylinder body 4. By providing the first sealing ring 5 on the side of the partition 23 close to the main valve body 1, the cylinder body 4 and the main valve body 1 can be isolated, improving the sealing ability, preventing liquid from escaping from the main valve body 1, and also preventing gas leakage in the cylinder body 4.

[0030] A fixing portion 27 is installed on the side of the corrugated sealing sheet 26 away from the sealing head 21, and the partition 23 presses the fixing portion 27 onto the main valve body 1. The sealing head 21, the corrugated sealing sheet 26 and the fixing portion 27 of the present invention are integrally formed, usually made of rubber, which can make the main valve and the cylinder body 4 independent of each other, thereby improving the reliability of the flow control valve.

[0031] A second sealing ring 6 is installed on the edge of the push plate 24, and the second sealing ring 6 abuts against the inner wall of the compression chamber. During the movement of the push plate 24, a spring 25 is installed on one side of the push plate 24, and compressed gas is filled in the other side of the push plate 24. The direction of movement of the push plate 24 is controlled by controlling the pressure value of the compressed gas. By setting the second sealing ring 6, the compressed gas can be prevented from invading the side of the spring 25, and the pressure of the compressed gas can be guaranteed without pressure relief.

[0032] The second regulating assembly 3 is installed on the second flow channel 14 . The second regulating assembly 3 includes an regulating bolt 31 . The regulating bolt 31 is screwed onto the main valve body 1 , and the end of the regulating bolt 31 is inserted into the second flow channel 14 .

[0033] The second flow channel 14 of the present invention can also be adjusted. The adjusting bolt 31 is screwed into the main valve body 1 from the side of the second flow channel 14 to block the cross-sectional area of ​​the second flow channel 14. By blocking the above cross-sectional area, the flow rate of the flowing liquid in the second flow channel 14 can be controlled. The flow rate of the liquid sprayed by the filling machine under slow filling can be flexibly controlled, and the flow regulating valve can have more flow adjustment options.

[0034] A cover plate 32 is mounted on the main valve body 1. The cover plate 32 has a first threaded hole into which the adjusting bolt 31 is screwed. The cover plate 32 extends the fixed length of the adjusting bolt 31, making it more stable. The cover plate 32 is screwed to the main valve body 1 via a second bolt 33, facilitating disassembly and maintenance.

[0035] A plug-in portion 321 is formed at the bottom of the cover plate 32, and a plug-in interface is provided on the main valve body 1. An adjusting bolt 31 is screwed into the plug-in interface, and a third sealing ring 7 is installed in the plug-in interface. The plug-in portion 321 abuts against the third sealing ring 7. The third sealing ring 7 can prevent the liquid in the second flow channel 14 from spraying out from the gap between the cover plate 32 and the main valve body 1, thereby improving the sealing ability.

[0036] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A flow control valve, characterized in that: The invention comprises a main valve body (1), wherein a first inlet (11) is provided on one end of the main valve body (1), and a first outlet (12) is provided on the other side, the first inlet (11) and the first outlet (12) are communicated through a first flow channel (13), a second inlet (15) is provided on the first flow channel (13) near the first inlet (11), a second outlet (16) is provided on the first flow channel (13) near the first outlet (12), the second inlet (15) and the second outlet (16) are communicated through a second flow channel (14), a first regulating component (2) is installed in the first flow channel (13), the first regulating component (2) regulates the cross-sectional area of ​​the first flow channel (13), and the diameter of the first flow channel (13) is larger than that of the second flow channel (14).

2. The flow control valve according to claim 1, characterized in that: A cylinder body (4) is installed on one side of the main valve body (1), and the first regulating assembly (2) includes a sealing head (21), a push rod (22), a partition (23) and a spring (25). The partition (23) is installed between the main valve body (1) and the cylinder body (4). The cylinder body (4) is surrounded by a compression chamber, and a push plate (24) is slidably installed in the compression chamber. A push rod (22) is installed on the push plate (24), and the push rod (22) is inserted into the partition (23). A sealing head (21) is installed on the other end of the push rod (22). The spring (25) is installed between the push plate (24) and the partition (23). The cylinder body (4) is connected to a compressed air source.

3. The flow control valve according to claim 2, characterized in that: A tapered section is provided in the first flow channel (13), the sealing head (21) abuts against the opening of the tapered section, and a corrugated sealing sheet (26) is installed on the sealing head (21).

4. The flow control valve according to claim 2, characterized in that: A mounting groove is provided on a side of the cylinder body (4) close to the main valve body (1), a first sealing ring (5) is installed in the mounting groove, and the partition (23) is sandwiched between the first sealing ring (5) and the cylinder body (4).

5. The flow control valve according to claim 3, characterized in that: A fixing portion (27) is installed on the side of the corrugated sealing sheet (26) away from the sealing head (21), and the partition plate (23) presses the fixing portion (27) onto the main valve body (1).

6. The flow control valve according to claim 2, characterized in that: A second sealing ring (6) is installed on the edge of the push plate (24), and the second sealing ring (6) abuts against the inner wall of the compression chamber.

7. The flow control valve according to claim 1, characterized in that: A second adjustment assembly (3) is installed on the second flow channel (14), and the second adjustment assembly (3) includes an adjustment bolt (31). The adjustment bolt (31) is screwed onto the main valve body (1), and the end of the adjustment bolt (31) is inserted into the second flow channel (14).

8. The flow control valve according to claim 7, characterized in that: A cover plate (32) is mounted on the main valve body (1), a first screw hole is provided on the cover plate (32), and the adjusting bolt (31) is screwed into the first screw hole.

9. The flow control valve according to claim 8, characterized in that: The cover plate (32) is screwed onto the main valve body (1) via a second bolt (33).

10. The flow control valve according to claim 9, characterized in that: A plug-in portion (321) is formed at the bottom of the cover plate (32), and a plug-in port is provided on the main valve body (1). The adjusting bolt (31) is screwed into the plug-in port, and a third sealing ring (7) is installed in the plug-in port, and the plug-in portion (321) abuts against the third sealing ring (7).

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