A three-way switching valve for a dry granulation machine

Abstract

This utility model discloses a three-way switching valve for a dry granulation machine, comprising a cylindrical valve body with a first inlet, a second inlet, and an outlet communicating with its internal cavity. The valve body is characterized by having an open first sealing seat and a second sealing seat inside, the first sealing seat being positioned near the first inlet, the second sealing seat near the second inlet, and the outlet located between the first and second sealing seats. A valve stem is also provided within the valve body, connected to a moving drive assembly. The valve stem has a first valve plate and a second valve plate. The first valve plate can seal the opening of the first sealing seat, isolating the first inlet from the outlet, and the second valve plate can seal the opening of the second sealing seat, isolating the second inlet from the outlet. This utility model has a simple structure, reasonable design, long service life, and is easy to clean.

Description

Technical Field

[0001] This utility model relates to granulators, specifically to a three-way switching valve for a dry granulator. Background Technology

[0002] A granulator is a specialized piece of equipment used in the food, chemical, and pharmaceutical industries. During production, the proportions of different powders need to be adjusted according to varying processing requirements, typically achieved manually, which is physically demanding for workers. Therefore, three-way valves capable of switching and conveying different powders have emerged on the market; however, their structures are generally complex, making disassembly, assembly, and cleaning inconvenient. Furthermore, traditional three-way valves experience mechanical friction between the valve plate and the sealing surface during sealing, leading to significant wear and a short service life. Utility Model Content

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by this utility model is to provide a three-way switching valve for a dry granulation machine to solve the above-mentioned problems.

[0004] Therefore, this utility model is implemented using the following solution: A three-way switching valve for a dry granulation machine includes a cylindrical valve body. The valve body has a first inlet, a second inlet, and an outlet communicating with its internal cavity. Inside the valve body, there are a first sealing seat and a second sealing seat with openings. The first sealing seat is located near the first inlet, and the second sealing seat is located near the second inlet. The valve body also has a valve stem connected to a moving drive assembly. The valve stem has a first valve plate and a second valve plate. The first valve plate can block the opening of the first sealing seat to isolate the first inlet and the outlet. The second valve plate can block the opening of the second sealing seat to isolate the second inlet and the outlet.

[0005] The first feed port is located on the side wall of the valve body, and the second feed port is located on the bottom of the valve body.

[0006] The motion drive assembly includes a cylinder, the piston rod of which is connected to a valve rod.

[0007] The above-mentioned technical solution provides a three-way switching valve for a dry granulation machine. The overall structure is reasonably designed, allowing for easy disassembly and cleaning of the valve body. Furthermore, the valve plate and sealing seat employ a compression seal, eliminating mechanical friction during sealing and significantly reducing wear on the sealing surface, thus extending its service life. Additionally, after switching the feed inlet, this structure allows for automatic cleaning of the valve's sealing port using vacuum airflow. Attached Figure Description

[0008] The present invention includes the following figures: Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0009] As shown in the figure, the present invention discloses a three-way switching valve for a dry granulation machine, comprising a cylindrical valve body 6. The valve body 6 is provided with a first feed port 4, a second feed port 10, and a discharge port 9 communicating with its inner cavity. Inside the valve body 6, there is a first sealing seat 5 and a second sealing seat 7 with openings. The first sealing seat 5 is located near the first feed port 4, and the second sealing seat 7 is located near the second feed port 10. The discharge port 9 is located between the first and second sealing seats. The valve body 6 is also provided with a valve stem 3, which is connected to a moving drive assembly. The valve stem 3 is provided with a first valve plate 2 and a second valve plate 8. The first valve plate 2 can block the opening of the first sealing seat 5 to isolate the first feed port 4 from the discharge port 9, and the second valve plate 8 can block the opening of the second sealing seat 7 to isolate the second feed port 10 from the discharge port 9.

[0010] Furthermore, the first inlet 4 and the outlet 9 are located on the side wall of the valve body 6, and the second inlet 10 is located on the bottom of the valve body 6. This allows for easy disassembly and assembly of the valve body for cleaning and processing.

[0011] Furthermore, the moving drive assembly includes a cylinder 1, with the piston rod of the cylinder 1 connected to the valve rod 3. By controlling the movement of the cylinder 1, the valve rod 3 can be moved, thereby enabling the first valve plate 2 to block the first sealing seat 5, or the second valve plate 8 to block the second sealing seat 7. Of course, in addition to using a cylinder, common linear drive structures such as hydraulic cylinders and cam structures can also be used to move the valve rod 3.

[0012] The working principle of this utility model is as follows: When it is necessary to convey material at the first feed port 4, the control cylinder 1 drives the valve rod 3 to rise, so that the second valve plate 8 blocks the opening of the second sealing seat 7. At this time, the first valve plate 2 separates from the first sealing seat 5, and the compressed gas blows the material from the first feed port 4 into the valve body 6 and through the opening of the first sealing seat 5, and finally blows it out from the outlet 9. When it is necessary to convey material at the second feed port 10, the control cylinder 1 drives the valve rod 3 to fall, so that the first valve plate 2 blocks the first sealing seat 5. At this time, the second valve plate 8 separates from the second sealing seat 7, and the compressed gas blows the material from the second feed port 10 into the valve body 6 and through the opening of the second sealing seat 7, and finally blows it out from the outlet 9.

[0013] The structure of this utility model is reasonably designed and allows for easy disassembly and cleaning of the valve body. At the same time, the valve plate and the sealing seat adopt a compression seal, which does not cause mechanical friction during sealing, thereby greatly reducing the wear of the sealing surface and extending its service life. In addition, after the feed port is switched, this structure can use vacuum airflow to automatically clean the valve's sealing port.

Claims

1. A three-way switching valve for a dry granulation machine, comprising a cylindrical valve body (6), wherein the valve body (6) is provided with a first feed port (4), a second feed port (10), and a discharge port (9) communicating with its inner cavity, characterized in that: The valve body (6) is provided with a first sealing seat (5) and a second sealing seat (7) with an opening inside. The first sealing seat (5) is located near the first feed port (4), and the second sealing seat (7) is located near the second feed port (10). The discharge port (9) is located between the first and second sealing seats. The valve body (6) is also provided with a valve stem (3). The valve stem (3) is connected to the moving drive assembly. The valve stem (3) is provided with a first valve plate (2) and a second valve plate (8). The first valve plate (2) can block the opening of the first sealing seat (5) to achieve isolation between the first feed port (4) and the discharge port (9). The second valve plate (8) can block the opening of the second sealing seat (7) to achieve isolation between the second feed port (10) and the discharge port (9).

2. The three-way switching valve for a dry granulation machine according to claim 1, characterized in that: The first feed port (4) is located on the side wall of the valve body (6), and the second feed port (10) is located on the bottom of the valve body (6).

3. The three-way switching valve for a dry granulation machine according to claim 1, characterized in that: The mobile drive assembly includes a cylinder (1), the piston rod of which is connected to a valve rod (3).

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