A pneumatic diaphragm switch valve for filling
By controlling the opening and closing of the pneumatic diaphragm valve assembly through mechanical means, the problems of complex starting methods and signal interference of pneumatic diaphragm pumps are solved, enabling efficient and low-backflow beverage filling, reducing the risk of contamination and the possibility of malfunction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHU CHE HUNG MECHANICAL TECH CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-29
AI Technical Summary
Existing pneumatic diaphragm pumps have complex start-up methods, and electrical signals are easily interfered with, leading to signal distortion, which causes valve opening and closing delays or malfunctions, affecting the complexity of beverage filling operations.
Mechanical means are used to assist the opening and closing of the diaphragm valve assembly through the air exchange valve assembly. By utilizing the cooperation of the air switching valve stem and the guide hole, the diaphragm valve assembly can achieve three states: open valve, half-open valve, and closed valve, thus completing the efficient and low backflow filling operation.
It achieves a highly efficient beverage filling process, reduces the possibility of beverage contamination, avoids valve opening and closing delays and malfunctions, and improves filling efficiency and the accuracy of flow rate control.
Smart Images
Figure CN224298886U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pneumatic diaphragm switch valves for filling, and more specifically, it relates to a pneumatic diaphragm switch valve for filling. Background Technology
[0002] In the beverage filling process, the filling equipment uses a diaphragm as the opening and closing mechanism for feeding. When the diaphragm is extended, the discharge channel is closed; when the diaphragm is retracted, the channel is opened. The diaphragm isolates the beverage from the metal valve body and drive mechanism, reducing the risk of contamination.
[0003] Currently, most filling equipment uses pneumatic diaphragms. Pneumatic diaphragm valves are generally equipped with electrical signals output by flow meters or weighing meters, and are controlled by PLCs and solenoid valves to meet filling requirements.
[0004] However, the starting method of existing pneumatic diaphragm pumps is relatively complex. In actual use, the electrical signal may lag or the cable may be subject to electromagnetic interference due to excessive length, resulting in signal distortion, causing valve opening and closing delays or malfunctions, affecting beverage filling and increasing the complexity of beverage filling work. A pneumatic diaphragm switching valve for filling 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 pneumatic diaphragm switching valve for filling.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A pneumatic diaphragm switch valve for filling includes an air exchange valve assembly. A diaphragm valve assembly is provided on one side of the air exchange valve assembly, and a discharge channel is provided on one side of the diaphragm valve assembly. A feed inlet is provided at one end of the discharge channel, and a discharge outlet is provided at the other end of the discharge channel. An air inlet and an air outlet are provided on the side of the diaphragm valve assembly away from the discharge channel.
[0008] The air exchange valve assembly includes a switching valve stem, an air switching valve stem for switching air is provided on one side of the switching valve stem, a base is provided on the side of the air switching valve stem away from the switching valve stem, and a first air passage and a second air passage are provided at the middle position between the base and the air switching valve stem.
[0009] The diaphragm valve assembly includes a diaphragm valve body for isolating the discharge channel, the diaphragm valve body is connected to a piston, a lower cavity is provided below the piston, and an upper cavity is provided above the piston.
[0010] By adopting the above technical solution, when gas enters through the air inlet, the gas reaches the position of the diaphragm valve assembly. Under the action of air pressure and the air exchange valve assembly, the diaphragm valve assembly moves away from the discharge channel, the discharge channel is opened, and the beverage flows from the inlet through the discharge channel to the discharge outlet, and then enters the bottle from the discharge outlet to complete the beverage filling. After the beverage filling is completed, the air exchange valve assembly is rotated again to close the diaphragm valve assembly, thereby sealing the discharge channel, completing the valve closing and isolation action, and reducing the possibility of beverage contamination.
[0011] The present invention is further configured such that: four sets of first guide holes are provided at the bottom of the air switching valve stem, and the four sets of first guide holes are arranged equidistantly around each other.
[0012] The present invention is further configured such that: both the first air channel and the second air channel are arc-shaped, and two sets of second guide holes are provided through the first air channel.
[0013] The present invention is further configured such that: four sets of third guide holes are provided through the second air channel, and the first guide hole, the second guide hole, and the third guide hole are used to control the switching of gas.
[0014] The present invention is further configured such that: a gasket is provided at the middle position of the switch valve stem and the air switching valve stem, and an end cap is sleeved on the outer side of the air switching valve stem, and the end cap is located at the end of the gasket away from the switch valve stem.
[0015] The present invention is further configured such that: a first airflow channel and a second airflow channel are provided at the middle position of the diaphragm valve assembly and the air switching valve stem, and the two ends of the first airflow channel and the second airflow channel are respectively connected to the diaphragm valve assembly and the air switching valve stem.
[0016] The present invention is further configured such that: the end of the first airflow channel away from the air switching valve stem is connected to the lower cavity, and the end of the second airflow channel away from the air switching valve stem is connected to the upper cavity.
[0017] By adopting the above technical solution, the four sets of first guide holes at the bottom of the air switching valve stem are A, R, B, and P, forming two sets of airflow channels. P and R are one inlet and one outlet channel, while A and B are another one inlet and one outlet channel. In practical applications, the first and second air channels are fixedly installed. By rotating the switch valve stem, the position of the air switching valve stem can be adjusted, that is, the positions of A, R, B, and P can be adjusted by the switch valve stem. Since there are un-drilled spaces in the first and second air channels, the gas switching can be achieved through the cooperation of the first and second air channels with A, R, B, and P. Depending on the switching situation, the operation of the diaphragm valve assembly in the entire device can be divided into three states: open valve, half-open valve, and closed valve. By switching between the above three states, the full-speed filling, slow material collection, and completely closed filling actions in the beverage filling process can be completed. In the above process, the problems of rapid filling, avoiding excessive backflow, and stopping filling are also taken into account, which brings convenience to filling.
[0018] In summary, this application includes at least one of the following beneficial technical effects:
[0019] By setting up an air exchange valve assembly to assist in the opening and closing of the diaphragm valve assembly, the diaphragm valve assembly can be controlled mechanically. Compared with the impact of signal interruption and loss in electrical signal transmission, this method can complete the filling operation with high efficiency and low backflow. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of a pneumatic diaphragm switch valve for filling according to the present invention.
[0021] Figure 2 for Figure 1 Schematic diagram of the cross-section structure.
[0022] Figure 3 This is a schematic diagram of the ventilation valve assembly in this utility model.
[0023] Figure 4 This is a schematic diagram of the valve in the open state of this utility model.
[0024] Figure 5 This is a schematic diagram of the partially open valve structure in this utility model.
[0025] Figure 6 This is a schematic diagram of the closed valve structure in this utility model.
[0026] Explanation of reference numerals in the attached drawings: 1. Ventilation valve assembly; 11. Switch valve stem; 12. Air switching valve stem; 13. Gasket; 14. Base; 15. End cap; 16. First airflow channel; 17. Second airflow channel; 18. First air channel; 19. Second air channel;
[0027] 2. Diaphragm valve assembly; 21. Diaphragm valve body; 22. Lower cavity; 23. Upper cavity; 24. Piston;
[0028] 3. Air inlet; 4. Air outlet; 5. Feed inlet; 6. Discharge outlet. 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] Please see Figure 1-6 The present invention provides the following technical solution:
[0032] Example 1, see Figure 1 A pneumatic diaphragm switch valve for filling includes an air exchange valve assembly 1, a diaphragm valve assembly 2 is provided on one side of the air exchange valve assembly 1, a discharge channel is provided on one side of the diaphragm valve assembly 2, an inlet 5 is provided at one end of the discharge channel, an outlet 6 is provided at the other end of the discharge channel, and an air inlet 3 and an air outlet 4 are provided on the side of the diaphragm valve assembly 2 away from the discharge channel.
[0033] Specifically, when gas enters through the air inlet 3, the gas reaches the position of the diaphragm valve assembly 2. Under the action of air pressure and the air exchange valve assembly 1, the diaphragm valve assembly 2 moves away from the discharge channel, the discharge channel is opened, and the beverage flows from the inlet 5 through the discharge channel to the discharge outlet 6, and then enters the bottle from the discharge outlet 6 to complete the beverage filling. After the beverage filling is completed, the air exchange valve assembly 1 is rotated again to close the diaphragm valve assembly 2, thereby blocking the discharge channel, completing the valve closing and isolation action, and reducing the possibility of beverage contamination.
[0034] In practical applications, by setting up the air exchange valve assembly 1 to assist the opening and closing of the diaphragm valve assembly 2, the diaphragm valve assembly 2 can be controlled by mechanical means, thus completing the efficient and low backflow filling operation.
[0035] See Figure 2 and Figure 3 The air exchange valve assembly 1 includes a switching valve stem 11, an air switching valve stem 12 for switching air is provided on one side of the switching valve stem 11, a base 14 is provided on the side of the air switching valve stem 12 away from the switching valve stem 11, and a first air passage 18 and a second air passage 19 are provided at the middle position between the base 14 and the air switching valve stem 12.
[0036] See Figure 2 and Figure 3The diaphragm valve assembly 2 includes a diaphragm valve body 21 for isolating the discharge channel. The diaphragm valve body 21 is connected to a piston 24. A lower cavity 22 is provided below the piston 24, and an upper cavity 23 is provided above the piston 24.
[0037] See Figure 2 and Figure 3 The bottom of the air switching valve stem 12 is provided with four sets of first guide holes, which are arranged equidistantly around each other.
[0038] See Figure 2 and Figure 3 Both the first air channel 18 and the second air channel 19 are designed in an arc shape, and two sets of second guide holes are provided through the first air channel 18.
[0039] See Figure 3 and Figure 4 The second air passage 19 is provided with four sets of third guide holes. The first guide hole, the second guide hole, and the third guide hole are used to control the switching of gas.
[0040] The interaction between the first, second, and third guide holes enables gas switching and the opening and closing of the diaphragm valve body 21, facilitating beverage filling.
[0041] See Figure 2 and Figure 3 A gasket 13 is provided at the middle position between the switch valve stem 11 and the air switching valve stem 12. An end cap 15 is sleeved on the outside of the air switching valve stem 12, and the end cap 15 is located at the end of the gasket 13 away from the switch valve stem 11.
[0042] See Figure 2 and Figure 3 A first airflow channel 16 and a second airflow channel 17 are provided at the middle position between the diaphragm valve assembly 2 and the air switching valve stem 12. The two ends of the first airflow channel 16 and the second airflow channel 17 are respectively connected to the diaphragm valve assembly 2 and the air switching valve stem 12.
[0043] See Figure 2 and Figure 3 The end of the first airflow channel 16 away from the air switching valve stem 12 is connected to the lower cavity 22, and the end of the second airflow channel 17 away from the air switching valve stem 12 is connected to the upper cavity 23.
[0044] The four sets of first guide holes at the bottom of the air switching valve stem 12 are A, R, B, and P, forming two sets of airflow channels. P and R are one inlet and one outlet channel, while A and B are another one inlet and one outlet channel. In practical applications, the first air channel 18 and the second air channel 19 are fixedly installed. By rotating the switch valve stem 11, the position of the air switching valve stem 12 can be adjusted, that is, the positions of A, R, B, and P can be adjusted by the switch valve stem 11. Since there are un-drilled spaces in the first air channel 18 and the second air channel 19, the gas switching can be achieved through the cooperation of the first air channel 18, the second air channel 19 and A, R, B, and P.
[0045] Depending on the switching situation, the operation of the diaphragm valve assembly 2 in the entire device can be divided into three states: open valve, half-open valve, and closed valve.
[0046] See Figure 4 When the device is in the open valve state, the air inlet 3 and the air outlet 4 are connected by PR and AB respectively, realizing a two-inlet and two-outlet configuration. Specifically, the gas enters through the air inlet 3, then flows through the air switching valve rod 12 and is released by P and B. The gas then flows into the lower cavity 22 through the first airflow channel 16. Due to the increase in air pressure in the lower cavity 22, the piston 24 is lifted under the influence of air pressure, and the diaphragm valve body 21 is lifted along with the piston 24. The diaphragm valve body 21 moves away from the discharge channel, realizing the open valve state of the diaphragm valve body 21. The discharge channel is opened, and at this time, the material can be fed from the inlet 5 and discharged from the outlet 6, meeting the needs of rapid filling and improving filling efficiency. On the other hand, due to the increase in the space of the lower cavity 22, the space of the upper cavity 23 is reduced, and the gas inside the upper cavity 23 is compressed. Then the gas flows through the second airflow channel 17, then through A and R, and finally is discharged from the air outlet 4, realizing the switching of airflow.
[0047] See Figure 5When the device is in a semi-open valve state, the air inlet 3 is not connected to AB, and the air inlet 3 and the air outlet 4 are connected to PR. Specifically, the gas inside the lower cavity 22 enters only through the air inlet 3, then flows through the air switching valve stem 12 and is released by P. B is not connected to the air inlet 3 and does not play an air intake role. The air pressure inside the lower cavity 22 decreases. Due to the influence of air pressure, the position of the piston 24 decreases, and the diaphragm valve body 21 follows the piston 24 to decrease. The diaphragm valve body 21 is connected to the discharge port. As the space of the channel narrows, the diaphragm valve body 21 changes from the open valve state to the half-open valve state. Although the device can feed from the inlet 5 and discharge from the outlet 6, the feeding and discharging speeds are slowed down. As the space of the lower cavity 22 becomes smaller, the space of the upper cavity 23 will become larger. AR is connected to the air outlet 4. After the space of the upper cavity 23 becomes larger, in order to maintain the balance of air pressure inside and outside the upper cavity 23, and because AB does not form a passage, A will intake air in the opposite direction, but PR forms a passage, and R will continuously exhaust air outward.
[0048] See Figure 6 When the device is in the closed state, AB and PR do not form a passage. In order to maintain the balance of air pressure inside and outside the lower cavity 22 and the upper cavity 23, PB forms a group and AR forms a group. That is, in the PB group, P is inlet and B is outlet, and in the AR group, A is inlet and R is outlet. During this process, the gas inside the lower cavity 22 and the upper cavity 23 is gradually released. The diaphragm valve body 21 is lowered to fit with the discharge channel. The discharge channel is closed and no more material can be fed. The filling is completed.
[0049] By setting the switch valve stem 11 to control the diaphragm valve body 21, the diaphragm valve body 21 can be in open, half-open and closed states, completing the full-speed filling, slow material collection and full-closure filling actions in the beverage filling process. In the above process, the problems of rapid filling, avoiding excessive backflow and stopping filling are also taken into account, which brings convenience to filling.
[0050] In the partially open valve state, some fluid is allowed to be continuously discharged, the flow rate gradually decreases, the process of converting kinetic energy into pressure energy is smoother, and the pressure fluctuation in the cavity is smaller. Compared with the case of directly closing the valve, the possibility of backflow is reduced.
[0051] 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 pneumatic diaphragm switching valve for filling, characterized in that: The device includes a ventilation valve assembly (1), a diaphragm valve assembly (2) is provided on one side of the ventilation valve assembly (1), a discharge channel is provided on one side of the diaphragm valve assembly (2), a feed inlet (5) is provided at one end of the discharge channel, a discharge outlet (6) is provided at the other end of the discharge channel, and an air inlet (3) and an air outlet (4) are provided on the side of the diaphragm valve assembly (2) away from the discharge channel. The air exchange valve assembly (1) includes a switch valve stem (11), and an air switching valve stem (12) for switching air is provided on one side of the switch valve stem (11). A base (14) is provided on the side of the air switching valve stem (12) away from the switch valve stem (11). A first air passage (18) and a second air passage (19) are provided at the middle position between the base (14) and the air switching valve stem (12). The diaphragm valve assembly (2) includes a diaphragm valve body (21) for isolating the discharge channel. The diaphragm valve body (21) is connected to a piston (24). A lower cavity (22) is provided below the piston (24), and an upper cavity (23) is provided above the piston (24).
2. The pneumatic diaphragm switching valve for filling according to claim 1, characterized in that: The bottom of the air switching valve stem (12) is provided with four sets of first guide holes, which are arranged equidistantly around each other.
3. A pneumatic diaphragm switching valve for filling according to claim 2, characterized in that: Both the first air channel (18) and the second air channel (19) are set in an arc shape, and two sets of second guide holes are opened through the first air channel (18).
4. A pneumatic diaphragm switching valve for filling according to claim 3, characterized in that: The second air channel (19) is provided with four sets of third guide holes, the first guide hole, the second guide hole and the third guide hole are used to control the switching of gas.
5. A pneumatic diaphragm switching valve for filling according to claim 1, characterized in that: A gasket (13) is provided at the middle position between the switch valve stem (11) and the air switching valve stem (12). An end cap (15) is sleeved on the outside of the air switching valve stem (12), and the end cap (15) is located at the end of the gasket (13) away from the switch valve stem (11).
6. A pneumatic diaphragm switching valve for filling according to claim 1, characterized in that: The diaphragm valve assembly (2) and the air switching valve stem (12) are provided with a first airflow channel (16) and a second airflow channel (17) at the middle position. The two ends of the first airflow channel (16) and the second airflow channel (17) are respectively connected to the diaphragm valve assembly (2) and the air switching valve stem (12).
7. A pneumatic diaphragm switching valve for filling according to claim 6, characterized in that: The end of the first airflow channel (16) away from the air switching valve stem (12) is connected to the lower cavity (22), and the end of the second airflow channel (17) away from the air switching valve stem (12) is connected to the upper cavity (23).