Diaphragm valve device for filling and filling equipment comprising diaphragm valve device

Abstract

The utility model provides a diaphragm valve device for filling and filling equipment comprising the same. The diaphragm valve device for filling comprises a first valve, a second valve and a third valve, the first valve comprises a first valve body, a first inflow channel arranged on the first valve body, a first outflow channel arranged on the first valve body and a first membrane piece arranged on the first valve body and used for controlling connection and disconnection of the first inflow channel and the first outflow channel. The second valve comprises a second valve body, a second inflow channel arranged on the second valve body, a second outflow channel arranged on the second valve body and a second film piece arranged on the second valve body and used for controlling the second inflow channel to be connected and disconnected, the second valve body is detachably connected with the first valve body, and the second valve body is detachably connected with the second valve body. The second flow outlet channel is communicated with the first flow outlet channel, the second flow inlet channel is communicated with the first flow inlet channel, and the first valve can be quickly replaced by the diaphragm valve device for filling.

Description

Technical Field

[0001] The utility model belongs to the technical field of filling production, and particularly relates to a diaphragm valve device for filling and a filling device comprising the same. Background Art

[0002] With the rapid development of industrial automation and industries such as food and medicine, the demand for fluid control equipment is increasing continuously. The diaphragm valve for canning is widely used in occasions such as filling and packaging due to its unique advantages.

[0003] Currently, in filling equipment, the diaphragm valve is directly installed on each working station. Since the membrane of the diaphragm valve is a vulnerable part, after damage, it may not only cause the loss of materials such as gas, resulting in waste, but also require the entire filling equipment to stop when replacing, and the production efficiency is not high.

[0004] Therefore, it is necessary to design a diaphragm valve device for filling and a filling device comprising the same to overcome the problem that the entire filling equipment needs to stop when replacing. Summary of the Utility Model

[0005] In view of some or all of the above technical problems existing in the prior art, the utility model provides a diaphragm valve device for filling and a filling device comprising the same. The diaphragm valve device for filling can be quickly replaced without stopping the filling equipment, thereby reducing the downtime.

[0006] According to one aspect of the utility model, there is provided a diaphragm valve device for filling, comprising:

[0007] A first valve, the first valve comprising a first valve body, a first inflow channel provided on the first valve body, a first outflow channel provided on the first valve body, and a first membrane provided on the first valve body for controlling the on-off of the first inflow channel and the first outflow channel,

[0008] A second valve, the second valve comprising a second valve body, a second inflow channel provided on the second valve body, a second outflow channel provided on the second valve body, and a second membrane provided on the second valve body for controlling the on-off of the second inflow channel,

[0009] Wherein, the second valve body is detachably connected to the first valve body, the second outflow channel is communicated with the first outflow channel, and the second inflow channel is communicated with the first inflow channel.

[0010] In one embodiment, a first valve cavity is provided on the first valve body. A first valve stem is slidably disposed in the first valve cavity. The first membrane member is disposed at the inner end of the first valve stem and seals the first valve cavity into a first sub-cavity and a second sub-cavity. The first sub-cavity communicates with the first outflow passage. A piston sleeving the outer end of the first valve stem is disposed in the first valve cavity. The piston is in sealing sliding connection with the cavity wall of the first valve cavity to block the opening of the second sub-cavity. A pressure sensor for sensing the pressure in the second sub-cavity is provided on the first valve body.

[0011] In one embodiment, a fixed magnet is provided on the piston, and a magnetic switch connected to the magnet is provided on the first valve body.

[0012] In one embodiment, a first pressure ring is fixed in the first valve cavity. A first stepped surface is provided on the cavity wall of the first valve cavity. The first pressure ring presses the first membrane member onto the first stepped surface. Wherein, the first valve stem passes through the first pressure ring with a gap.

[0013] In one embodiment, a linear bearing is provided between the first pressure ring and the first valve stem.

[0014] In one embodiment, the first membrane member is wrapped around and sleeved on the inner end of the first valve stem and is snap-connected to the first valve stem.

[0015] In one embodiment, a second stepped surface is provided on the first valve cavity. A buffer pad is provided between the second stepped surface and the outer end face of the piston.

[0016] In one embodiment, a second valve cavity is provided on the second valve body. A second valve stem is slidably disposed in the second valve cavity. The second membrane member is disposed at the inner end of the second valve stem and seals the second valve cavity into a third sub-cavity and a fourth sub-cavity. The third sub-cavity is used to communicate with the second inflow passage. A plug for blocking the opening of the fourth sub-cavity is disposed in the second valve cavity. The second valve stem extends outward through the plug.

[0017] In one embodiment, the second valve stem is threadedly connected to the plug.

[0018] According to another aspect of the present invention, a filling device is provided, including:

[0019] A filling device main body,

[0020] The above-mentioned diaphragm valve device for filling,

[0021] Wherein, the second valve is connected to the filling device main body through a connecting bolt.

[0022] Compared with the prior art, the advantages of the present utility model are as follows: The diaphragm valve device for filling not only includes a first valve but also a second valve, which is equivalent to adding a structure for controlling on / off on the first inflow channel of the first valve. Even when the first valve needs to be quickly disassembled and replaced, it is not necessary to shut down the filling equipment as a whole. Only by cutting off this passage through the second valve can the first valve be disassembled for repair and replacement. It can be seen that the diaphragm valve device for filling in this application can improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The preferred embodiments of the present utility model will be described in detail below with reference to the drawings. In the drawings:

[0024] Figure 1 shows an exploded view of the diaphragm valve device for filling according to an embodiment of the present utility model;

[0025] Figure 2 shows a front view of the diaphragm valve device for filling according to an embodiment of the present utility model;

[0026] Figure 3 shows a side view of the diaphragm valve device for filling according to an embodiment of the present utility model;

[0027] Figure 4 is a sectional view taken along A-A from Figure 2 ;

[0028] Figure 5 is a sectional view taken along B-B from Figure 3 .

[0029] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to make the technical solutions and advantages of the present utility model clearer, the exemplary embodiments of the present utility model will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than an exhaustive list of all embodiments. And without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0031] An embodiment of the present utility model provides a diaphragm valve device for filling. As Figures 1 to 5As shown in the figure, the diaphragm valve device for filling includes a first valve 1 and a second valve 4. The first valve 1 includes a first valve body 11, a first inflow channel 12 provided on the first valve body 11, a first outflow channel 13 provided on the first valve body 11, and a first diaphragm member 14 provided on the first valve body 11 for controlling the on / off of the first inflow channel 12 and the first outflow channel 13. The second valve 4 includes a second valve body 41, a second inflow channel 42 provided on the second valve body 41, a second outflow channel 43 provided on the second valve body 41, and a second diaphragm member 44 provided on the second valve body 41 for controlling the on / off of the second inflow channel 42. Among them, the second valve body 41 is detachably connected to the first valve body 11. Specifically, the first valve body 11 and the second valve body 41 are connected by a second bolt 6, and this setting method can facilitate the assembly or disassembly of the first valve 1 and the second valve 4. The second outflow channel 43 is communicated with the first outflow channel 13, and the second inflow channel 42 is communicated with the first inflow channel 12.

[0032] The second valve 4 is detachably arranged on the first valve 1. During use, the first valve 1 can be arranged on the filling equipment main body (not shown in the figure) through the second valve 4. Since the second inflow channel 42 is communicated with the first inflow channel 12, and at the same time, the second outflow channel 43 is communicated with the first outflow channel 13, the filling operation can be completed through the second valve 4 and the first valve 1. In the normal working state, the fluid to be filled flows through the filling equipment main body and then successively flows through the second inflow channel 42, the first inflow channel 12, the first outflow channel 13 and finally flows out through the second outflow channel 43. When the first valve 1 needs to work normally, the second diaphragm member 44 controls the second inflow channel 23 to be communicated, so that the second inflow channel 42 is communicated with the first inflow channel 12. And when the first valve 1 has problems and needs to be repaired or replaced, the second diaphragm member 44 controls the second inflow channel 23 to be cut off, so that the first valve 1 is cut off from the filling equipment main body. At this time, the first valve 1 can be conveniently disassembled from the second valve 4. It can be seen that the diaphragm valve device for filling of the present application can facilitate the replacement of the first valve 1, and the whole filling equipment does not need to stop during the replacement process, and the production efficiency is high. In addition, the first valve 1 and the second valve 4 use diaphragm members 14, 44 for on / off, making the diaphragm valve device for filling more suitable for filling and avoiding pollution.

[0033] In one embodiment, a first valve cavity 15 is provided on the first valve body 11. A first valve rod 16 is slidably arranged in the first valve cavity 15. The first valve rod 16 can move along its own axial direction relative to the first valve body 11. The first diaphragm member 14 is arranged at the inner end of the first valve rod 16 (connected with Figure 4On the lower end direction (consistent with the upper end direction in [reference]) to move along with the first valve stem 16. The first membrane member 14 seals and separates the first valve cavity 15 into a first sub-cavity 17 and a second sub-cavity 18. The first membrane member 14 can move driven by the first valve stem 16, thereby cutting off the connection between the first inflow channel 12 and the first outflow channel 13, or opening the connection between the first inflow channel 12 and the first outflow channel 13.

[0034] The first sub-cavity 17 is connected to the first outflow channel 13. Inside the first valve cavity 15, a piston 19 is sleeved on the outer end of the first valve stem 16 (consistent with the upper end direction in [reference]). Figure 4 The piston 19 is in sealed sliding connection with the cavity wall of the first valve cavity 15 to block the opening of the second sub-cavity 18. That is to say, a sealed second sub-cavity 18 can be formed by the piston 19 and the first membrane member 14. A pressure sensor 20 is provided on the first valve body 11. The pressure sensor 20 is used to sense the pressure inside the second sub-cavity 18. The first membrane member 14 is a vulnerable part. After the first membrane member 14 is damaged, the second sub-cavity 18 is connected to the first sub-cavity 17, and the value of the pressure sensor 20 changes, sensing that the pressure change inside the second sub-cavity 18 is relatively large, and then judging that the first membrane member 14 is damaged. In this way, the first membrane member 14 can be replaced in time, reducing or avoiding filling pollution and ensuring the effective progress of the filling operation.

[0035] A fixed magnet 21 is provided on the piston 19. A magnetic switch 22 connected to the magnet 21 is provided on the first valve body 11. During the repeated movement of the piston 19, through the cooperation of the magnetic switch 22 and the magnet 21, the movement times of the piston 19 can be calculated, and then the opening and closing times of the first membrane member 14 can be calculated, which helps to evaluate the service life of the first membrane member 14 through the opening and closing times of the first membrane member 14. When the opening and closing times of the first membrane member 14 reach the preset value, the first membrane member 14 can be replaced. It can be seen that in this application, through the cooperation of the magnetic switch 22 and the magnet 21, the replacement time of the first membrane member 14 can be determined, which is more helpful to ensure the long-term stable operation of the diaphragm valve device for filling. It can also determine whether the first membrane member 14 needs to be replaced through the value of the pressure sensor 20, especially for reminding the damage of the first membrane member 14 in case of unexpected situations when it has not reached the preset value.

[0036] A first pressure ring 23 is fixed inside the first valve cavity 15. The first pressure ring 23 is a ring-shaped member itself. For example, it can be press-fitted onto the inner wall of the first valve cavity 15 by an interference fit method. A first step surface 24 is provided on the cavity wall inside the first valve cavity 15. The first pressure ring 23 presses the first membrane member 14 onto the first step surface 24. That is to say, the edge of the first membrane member 14 extends radially into the space between the first pressure ring 23 and the first step surface 24. This setting can effectively fix the first membrane member 14 and ensure the sealed separation of the first sub-cavity 17 and the second sub-cavity 18, that is, the first membrane member 14 plays a sealing role.

[0037] The first valve stem 16 passes through the first pressure ring 23 with a clearance. A linear bearing 25 is arranged between the first pressure ring 23 and the first valve stem 16. The linear bearing 25 can better guide the movement direction of the first valve stem 16 and prevent the first valve stem 16 from bending under force. At the same time, by arranging the linear bearing 25, the friction between the first valve stem 16 and the first pressure ring 23 can also be reduced.

[0038] The first membrane member 14 is generally in a circular disc shape. The middle part of the first membrane member 14 is constructed in a frustum shape for matching with the first mounting seat 26. The first mounting seat 26 is arranged on the first inflow channel 12. When the first membrane member 14 moves along with the first valve stem 16, the frustum-shaped middle part of the first membrane member 14 can serve as a plug to block or open the first mounting seat 26, thereby ensuring the truncation or connection of the first inflow channel 12 and the first outflow channel 13. The first membrane member 14 is wrapped around the inner end (consistent with the lower end in Figure 4 the following) of the first valve stem 16. At the same time, the first membrane member 14 is snap-connected to the first valve stem 16. Specifically, a receiving portion 141 is arranged on the first membrane member 14 for receiving the inner end of the first valve stem 16, and a snap portion 142 is arranged on the outer periphery of the receiving portion 141. The snap portion 142 extends radially towards the first valve stem 16 and is embedded into the first valve stem 16 to form a snap connection with the first valve stem 16. This setting method realizes the connection between the first membrane member 14 and the first valve stem 16.

[0039] A second stepped surface 27 is arranged on the first valve cavity 15. A buffer pad 28 is arranged between the second stepped surface 27 and the outer end surface of the piston 19. The second stepped surface 27 limits the stroke of the piston 19 and prevents the piston 19 from falling off from the first valve cavity 15. By arranging the buffer pad 28, the impact between the two can be effectively reduced, ensuring the service life of the piston 19. For example, the buffer pad 28 can be arranged on the piston 19.

[0040] In addition, for the convenience of installation, the first valve body 11 can be a split type, that is, the first valve body 11 includes a lower valve body 29 and an upper valve body 30, and the two are fixedly connected by a first bolt 31.

[0041] A first elastic member 32 is provided on the outer wall of the first valve stem 16. The first elastic member 32 mainly functions to reset. The outer end of the piston 19 is used to connect to a power source (for example, the power source can be a gas source) to drive the piston 19 to move downward, driving the first valve stem 16 and then driving the first membrane member 14 to move to block the first mounting seat 26. During the movement of the piston 19 towards the second valve 4, the first elastic member 32 is compressed and accumulates energy. After the pressure of the power source on the piston 19 is withdrawn or reduced, the first elastic member 32 drives the piston 19 to move in a direction away from the second valve 4, driving the first valve stem 16 and then driving the first membrane member 14 to move to open the first mounting seat 26. It is easy to understand that the first elastic member 32 is a spring, sleeved on the outer wall of the first valve stem 16, with one end abutted against the piston 19 and the other end abutted against the first pressure ring 23.

[0042] A first sealing member 33 is provided between the piston 19 and the wall of the first valve chamber 15 to ensure the seal therebetween. In addition, a limiting ring 34 is sleeved on the first valve stem 16. During the movement of the first valve stem 16 in a direction away from the second valve 4 relative to the first pressure ring 23, the limiting ring 34 will abut against the inner end face of the first pressure ring 23 to limit the first valve stem 16.

[0043] According to the present application, a second valve chamber 45 is provided on the second valve body 41. A second valve stem 46 is slidably disposed in the second valve chamber 45. A second membrane member 44 is disposed at the inner end of the second valve stem 46 (the end extending into the second valve chamber 45, which is consistent with the left end in Figure 4 ), and seals and partitions the second valve chamber 45 into a third sub-chamber 47 and a fourth sub-chamber 48. The third sub-chamber 47 is used to communicate with the second inflow passage 42. A plug 49 for blocking the opening of the fourth sub-chamber 48 is provided in the second valve chamber 45. The second valve stem 46 extends outward through the plug 49. Moreover, the second valve stem 46 is threadedly connected to the plug 49. During the screwing of the second valve stem 46, relative to the axial movement of the plug 49, it drives the second membrane member 44 to move axially along the second valve stem 46, thereby blocking or intercepting the second inflow passage 42. It can be seen that the second valve 4 can block and open the second inflow passage 42 manually. It should be noted here that the second membrane member 44 is snap-connected to the second valve stem 46, and the second membrane member 44 does not affect the rotation of the second valve stem 46.

[0044] During the operation of the diaphragm valve device for filling, the second valve 4 can be in a normally open state. Only when the first valve 1 needs to be replaced or repaired, the second inflow channel 42 is blocked. Then, the repeated movement of the second diaphragm member 44 is not frequent, which can effectively ensure that the second diaphragm member 44 is not easily damaged. The self-structure of the second diaphragm member 44 is similar to or the same as that of the first diaphragm member 14, and the connection relationship between the second diaphragm member 44 and the second valve stem 46 can also refer to the connection relationship between the first diaphragm member 14 and the first valve stem 16. A second mounting seat 54 is provided on the second inflow channel 42, and this second mounting seat 54 is used to match the main body of the second diaphragm member 44. The main body of the second diaphragm member 44 is also generally constructed as a frustum-shaped plug to block or open the second inflow channel 42. A second pressure ring 53 is provided in the second valve cavity 45 to limit the edge of the second diaphragm member 44, that is, to fix the second diaphragm member 44 to the wall of the second valve cavity 45. The connection relationship between the second diaphragm member 44 and the second valve cavity 45 and the second pressure ring 53 can also refer to the connection relationship between the first diaphragm member and the first valve cavity 15 and the first pressure ring 23. The above structures and connection relationships can be foreseen by those skilled in the art and will not be elaborated here.

[0045] A second sealing ring 5 is also provided between the first valve 1 and the second valve 4. This second sealing ring 5 is used to seal between the second outflow channel 43 and the first outflow channel 13, and between the second inflow channel 42 and the first inflow channel 12.

[0046] This application also relates to a filling device (not shown in the figure). This filling device includes a filling device main body and the above-mentioned diaphragm valve device for filling. Among them, the second valve 4 is connected to the filling device main body through a connecting bolt 7 to ensure a detachable connection between the diaphragm valve device for filling and the filling device main body, which is convenient for installation and disassembly.

[0047] The following is based on Figures 1 to 5 Describe the working principle of the filling device.

[0048] Taking the production of carbonated beverages as an example, carbon dioxide gas needs to be filled before beverage packaging. Of course, it can be understood that the filling device of this application can also be used to fill other fluids. Due to hygienic and safety considerations, a clean-type diaphragm valve is used. A plurality of, for example, dozens or hundreds of diaphragm valve devices for filling are integrated on the filling device main body for filling at the same time.

[0049] In the diaphragm valve device for filling, the second valve 4 can be a normally open manual type, and the first valve 1 can be a normally open pneumatic type. One end of the second valve 4 is connected to the filling device main body, and the other end is connected to the first valve 1.

[0050] During the filling operation, if the second valve 4 is in an open state, high-pressure gaseous carbon dioxide passes through the second inflow channel 42 ( Figure 4In the first valve 1, the piston 19 is connected to the gas source to actuate the piston 19 to move downward, and the first inlet channel 12 is blocked. At this time, no gas flows out of the first outlet channel 13. When the piston 19 is depressurized, the first elastic member 32 actuates the piston 19 to move upward, unblocking the first inlet channel 12, and the first inlet channel 12 is connected to the first outlet channel 13. Then, the carbon dioxide gas passes through the first inlet channel 12 and then passes through the first outlet channel 13 and the second outlet channel 43 ( Figure 4 The carbon dioxide gas can be filled in the direction indicated by the out arrow.

[0051] When the first valve 1 needs to be replaced, the second inlet channel 42 in the second valve 4 is blocked and the second valve 4 is in a closed state. At this time, the first valve 1 can be disassembled for maintenance or replacement.

[0052] Although the preferred embodiments of the utility model have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and / or modifications that fall within the scope of the utility model, and changes and / or modifications made according to the embodiments of the utility model should be included within the scope of protection of the utility model.

Claims

1. A diaphragm valve device for filling, characterized in that: include: a first valve, the first valve comprising a first valve body, a first inlet channel provided on the first valve body, a first outlet channel provided on the first valve body, and a first membrane provided on the first valve body for controlling the opening and closing of the first inlet channel and the first outlet channel, a second valve, the second valve comprising a second valve body, a second inlet channel arranged on the second valve body, a second outlet channel arranged on the second valve body, and a second membrane member arranged on the second valve body for controlling the on-off of the second inlet channel, The second valve body is detachably connected to the first valve body, the second outlet channel is communicated with the first outlet channel, and the second inlet channel is communicated with the first inlet channel.

2. The diaphragm valve device for filling according to claim 1, characterized in that: A first valve cavity is arranged on the first valve body, a first valve stem is slidably arranged in the first valve cavity, the first membrane is arranged on the inner end of the first valve stem and seals the first valve cavity into a first sub-cavity and a second sub-cavity, the first sub-cavity is communicated with the first outlet channel, a piston is arranged in the first valve cavity and is sleeved on the outer end of the first valve stem, the piston is sealingly and slidably connected to the cavity wall of the first valve cavity to block the opening of the second sub-cavity, and a pressure sensor for sensing the pressure in the second sub-cavity is arranged on the first valve body.

3. The diaphragm valve device for filling according to claim 2, characterized in that: A fixed magnet is arranged on the piston, and a magnetic switch connected to the magnet is arranged on the first valve body.

4. The diaphragm valve device for filling according to claim 2, characterized in that: A first pressure ring is fixed in the first valve cavity, a first step surface is arranged on the cavity wall of the first valve cavity, and the first pressure ring presses the first membrane member onto the first step surface, wherein the first valve stem passes through the first pressure ring in a gap manner.

5. The filling diaphragm valve device according to claim 4, characterized in that: A linear bearing is arranged between the first pressure ring and the first valve stem.

6. The filling diaphragm valve device according to claim 2, characterized in that: The first membrane is wrapped around the inner end of the first valve stem and is clamped with the first valve stem.

7. The filling diaphragm valve device according to claim 2, characterized in that: A second step surface is arranged on the first valve cavity, and a buffer pad is arranged between the second step surface and the outer end surface of the piston.

8. The filling diaphragm valve device according to any one of claims 1 to 7, characterized in that: A second valve cavity is arranged on the second valve body, a second valve stem is slidably arranged in the second valve cavity, the second membrane is arranged to the inner end of the second valve stem and seals the second valve cavity into a third sub-cavity and a fourth sub-cavity, the third sub-cavity is used to communicate with the second inlet channel, a screw plug is arranged in the second valve cavity for sealing the opening of the fourth sub-cavity, and the second valve stem extends outward through the screw plug.

9. The diaphragm valve device for filling according to claim 8, characterized in that: The second valve stem is threadedly connected to the screw plug.

10. A filling device, characterized in that: include: Filling equipment body, The filling diaphragm valve device according to any one of claims 1 to 9, in, The second valve is connected to the filling device body via connecting bolts.

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