Corrosion-resistant sanitary three-way ball valve

Abstract

This utility model provides a corrosion-resistant sanitary three-way ball valve, belonging to the field of mechanical component technology, to solve the problems of cumbersome installation and the impact on the sanitary performance of existing three-way ball valves. It includes a ball valve body, a ball valve pipe, a ball valve connecting column, a connecting panel, a ball valve output shaft, an eccentric ball, a ball valve union mechanism, and a ball valve assembly mechanism. The ball valve pipe is fixedly connected to the outer end face of the ball valve body. The ball valve connecting column is fixedly connected to the middle position of the upper end face of the ball valve body. The connecting panel is fixedly connected to the upper end face of the ball valve connecting column. The ball valve output shaft rotates inside the ball valve connecting column. The eccentric ball rotates inside the ball valve body. The ball valve union mechanism is located on the outer end face of the ball valve pipe. The ball valve assembly mechanism is located inside the ball valve body. The ball valve union mechanism improves disassembly and assembly efficiency and eliminates the risk of media residue. The ball valve assembly mechanism facilitates the cleaning and maintenance of the three-way ball valve.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical component technology, and more specifically, it relates to a corrosion-resistant sanitary three-way ball valve. Background Technology

[0002] In industries such as food processing and pharmaceutical manufacturing, mechanical equipment controls water flow, and water pipelines need to achieve fluid diversion, merging, or reversal. Three-way ball valves are used when the mechanical equipment controls water flow and the water in the mechanical equipment passes through the three-way ball valve to divert the water to different pipelines.

[0003] According to CN201921288315.5, this utility model belongs to the field of valve body technology, and particularly relates to a three-way ball valve, including a valve body, a valve stem, a valve handle, a rotatable spherical valve core disposed within the valve body, and a flow channel disposed within the spherical valve core. The outer end of the valve stem extends out of the valve body and is connected to the valve handle, and the inner end of the valve handle cooperates with the spherical valve core. Rotating the valve handle drives the valve stem to rotate, thereby driving the spherical valve core to rotate. The valve body is provided with an inlet, a first outlet, and a second outlet connected to the flow channel. The inlet is provided with a first connector, which is threaded to the inlet, and the inner end of the first connector is provided with a first sealing ring that cooperates with the spherical valve core. The first outlet is provided with a second connector, which is fixedly connected to the first outlet, and the inner end of the second connector is provided with a second sealing ring that cooperates with the spherical valve core. The second outlet is provided with a third connector, which is threaded to the second outlet, and the inner end of the third connector is provided with a third sealing ring that cooperates with the spherical valve core. This utility model makes valve handle adjustment easier and provides better sealing performance.

[0004] Based on the above, existing three-way ball valves are generally installed on mechanical equipment using a multi-bolt structure. When installing the three-way ball valve on the equipment, the screw holes of the three-way ball valve need to be aligned with the screw holes on the equipment, and then the bolts are installed one by one inside the screw holes. This makes the installation of the three-way ball valve quite cumbersome. In addition, media residue can easily remain inside the screw holes, affecting the hygiene of the ball valve. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a corrosion-resistant sanitary three-way ball valve. This addresses the issue that existing three-way ball valves are typically installed on mechanical equipment using a multi-bolt structure. When installing the three-way ball valve on the equipment, it is necessary to align the bolt holes of the three-way ball valve with the bolt holes on the equipment, and then install the bolts one by one into the bolt holes, resulting in a cumbersome installation process. Furthermore, media residue can easily remain inside the bolt holes, affecting the sanitary performance of the ball valve.

[0006] The purpose and function of this corrosion-resistant sanitary three-way ball valve are achieved by the following specific technical means: A corrosion-resistant sanitary three-way ball valve includes a ball valve body, ball valve pipes, ball valve connecting pins, connecting panels, ball valve output shafts, eccentric balls, ball valve union mechanisms, and ball valve assembly mechanisms. The ball valve body is a cylindrical structure made of 316L stainless steel. Three sets of ball valve pipes are provided, each fixedly connected to the outer end face of the ball valve body. The ball valve connecting pin is fixedly connected to the middle of the upper end face of the ball valve body. The connecting panel is fixedly connected to the upper end face of the ball valve connecting pin. The ball valve output shaft rotates inside the ball valve connecting pin. The eccentric ball is rotatably connected inside the ball valve body, located below the ball valve output shaft. Three sets of ball valve union mechanisms are provided, each located on the outer end face of one of the three sets of ball valve pipes. The ball valve assembly mechanism is located inside the ball valve body.

[0007] Furthermore, the ball valve union mechanism includes a union protrusion; the union protrusion is fixedly connected to the outer side of the outer end face of the ball valve pipe, and the union protrusion has a circular ring structure.

[0008] Furthermore, the ball valve union mechanism also includes a union groove; the union groove is located at the middle of the outer end face of the union protrusion, and the union groove is a circular groove structure.

[0009] Furthermore, the ball valve assembly mechanism includes: a mounting slot and a mounting connector; the mounting slot is located at the middle of the upper end face of the connection panel; the mounting connector is inserted into the mounting slot, and the ball valve output shaft is rotatably connected to the middle of the inner end face of the mounting connector.

[0010] Furthermore, the ball valve assembly mechanism also includes: mounting screw holes and mounting bolts; there are two sets of mounting screw holes, which are respectively opened on the left and right sides of the mounting connector and the left and right sides of the lower end face of the connecting panel; there are two sets of mounting bolts, which are respectively threaded into the two sets of mounting screw holes.

[0011] Furthermore, the ball valve assembly mechanism also includes: a connecting block and a connecting slot; the connecting block is fixedly connected to the middle position of the lower end face of the ball valve output shaft, and the connecting block has a cross-shaped structure; the connecting slot is opened on the upper end face of the eccentric ball, and the connecting block and the connecting slot are connected by insertion.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This utility model adopts a ball valve union mechanism, which connects the ball valve pipeline to other pipelines through union clamps and sealing gaskets. This ensures quick installation and removal of the three-way ball valve, thereby improving the efficiency of disassembly and assembly. It avoids the cumbersome installation problem caused by using multiple sets of bolts to install the ball valve. The ball valve pipeline has no extra grooves or other structures, eliminating the risk of media residue.

[0013] This invention utilizes a ball valve assembly mechanism to achieve eccentric ball control of the ball valve's opening and closing. The three-way ball valve employs a PTFE / reinforced PEEK composite seat and eccentric ball structure, overcoming the high torque dependence of traditional sealing structures and improving the high-temperature durability of the three-way ball valve. The surface of the three-way ball valve utilizes a composite process of electrolytic polishing and mechanical polishing, combined with nitric acid / citric acid passivation technology, significantly enhancing the material's corrosion resistance. The ball valve connecting column and eccentric ball can be disassembled and installed, facilitating subsequent disassembly, cleaning, and maintenance of the three-way ball valve. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the equiaxed structure of the three-way ball valve of this utility model.

[0015] Figure 2 This is a top view of the structure of the three-way ball valve of this utility model.

[0016] Figure 3 This is a schematic diagram of the ball valve connecting mechanism of this utility model.

[0017] Figure 4 This is a schematic diagram of the ball valve assembly mechanism of this utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the ball valve output shaft and the eccentric ball of this utility model.

[0019] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Ball valve body; 2. Ball valve pipe; 3. Ball valve connecting column; 4. Connecting panel; 401. Mounting slot; 5. Union protrusion; 6. Union groove; 7. Mounting connector; 8. Ball valve output shaft; 801. Connecting block; 9. Mounting screw hole; 10. Mounting bolt; 11. Eccentric ball; 1101. Connecting slot. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0021] Example 1: As attached Figure 1 To be continued Figure 3 As shown: This utility model provides a corrosion-resistant sanitary three-way ball valve, including a ball valve body 1, a ball valve pipe 2, a ball valve connecting column 3, a connecting panel 4, a ball valve output shaft 8, an eccentric ball 11, and a ball valve union mechanism; the ball valve body 1 is a cylindrical structure made of 316L stainless steel; three sets of ball valve pipes 2 are provided, and the three sets of ball valve pipes 2 are fixedly connected to the outer end face of the ball valve body 1; the ball valve connecting column 3 is fixedly connected to the middle position of the upper end face of the ball valve body 1; the connecting panel 4 is fixedly connected to the upper end face of the ball valve connecting column 3; the ball valve output shaft 8 rotates inside the ball valve connecting column 3; the eccentric ball 11 is rotatably connected inside the ball valve body 1, and the eccentric ball 11 is located below the ball valve output shaft 8; three sets of ball valve union mechanisms are provided, and the three sets of ball valve union mechanisms are respectively provided on the outer end face of the three sets of ball valve pipes 2.

[0022] The ball valve union mechanism includes a union protrusion 5. The union protrusion 5 is fixedly connected to the outer side of the outer end face of the ball valve pipe 2. The union protrusion 5 has a circular structure. During use, when the ball valve pipe 2 is connected to other pipes, the union protrusion 5 is aligned with the protrusions on the other pipes, and then the union clamp is used to clamp the union protrusion 5, so that the ball valve pipe 2 is connected to other pipes. The integrated ball and the dead-angle-free flow channel design, combined with the union quick-installation structure, improves the disassembly and assembly efficiency by 50%, eliminates the risk of media residue, optimizes cleanliness and maintenance efficiency, supports the needs of continuous pharmaceutical production, and reduces downtime by 70%.

[0023] The ball valve union mechanism also includes a union groove 6. The union groove 6 is located in the middle of the outer end face of the union protrusion 5. The union groove 6 is a circular groove structure. During use, when the ball valve pipe 2 is connected to other pipes, the sealing rubber gasket is placed inside the union groove 6 to ensure the sealing of the connection between the ball valve pipe 2 and other pipes.

[0024] The specific usage and function of this first embodiment are as follows: During use, when ball valve pipe 2 is connected to other pipes, the union protrusion 5 is aligned with the protrusions on the other pipes, and then the union clamp is used to lock onto the union protrusion 5, connecting ball valve pipe 2 to other pipes. The integrated ball and dead-angle-free flow channel design, combined with the quick-connect structure of the union, improves disassembly and assembly efficiency by 50%, eliminates the risk of media residue, and optimizes both cleanliness and maintenance efficiency, supporting the needs of continuous pharmaceutical production and reducing downtime by 70%. When ball valve pipe 2 is connected to other pipes, the sealing rubber gasket is placed inside the union groove 6 to ensure the sealing of the connection between ball valve pipe 2 and other pipes. A composite process of electrolytic polishing and mechanical polishing has been developed to achieve an ultra-low roughness of Ra≤0.4μm. Combined with nitric acid / citric acid passivation technology, the corrosion resistance of the material is significantly improved. XPS component analysis was used to optimize the performance of the passivation film, ensuring that it passed the salt spray test (≥72h) and hygiene standards. This solved the problems of chemical residues and microbial growth in traditional processes. A four-level dynamic cleaning process was constructed, consisting of alkaline cleaning → ultrasonic degreasing → pure water rinsing → steam sterilization. The residue control standards are stricter than GMP / FDA requirements, ensuring that the corrosion resistance and hygiene level of the three-way ball valve reach the sanitary level.

[0025] Example 2: Based on Example 1, as shown in the appendix Figure 4 and attached Figure 5 As shown: This utility model provides a corrosion-resistant sanitary three-way ball valve, and also includes a ball valve assembly mechanism. The ball valve assembly mechanism is located inside the ball valve body 1 and includes: a mounting slot 401 and a mounting connector 7; the mounting slot 401 is located at the middle position of the upper end face of the connecting panel 4; the mounting connector 7 is inserted into the mounting slot 401, and the ball valve output shaft 8 is rotatably connected to the middle position of the inner end face of the mounting connector 7. During use, when the ball valve output shaft 8 is installed inside the ball valve connecting column 3, the movement of the mounting connector 7 drives the ball valve output shaft 8 to move, and the mounting connector 7 is inserted into the mounting slot 401.

[0026] The ball valve assembly mechanism also includes: mounting screw holes 9 and mounting bolts 10; there are two sets of mounting screw holes 9, which are respectively opened on the left and right sides of the mounting connector 7 and the left and right sides of the lower end face of the connecting panel 4; there are two sets of mounting bolts 10, which are threaded into the two sets of mounting screw holes 9. During use, the movement of the mounting connector 7 causes the mounting screw holes 9 on the mounting connector 7 to move, and the mounting screw holes 9 on the mounting connector 7 and the mounting screw holes 9 on the connecting panel 4 are aligned. The mounting bolts 10 are installed inside the mounting screw holes 9, and the ball valve output shaft 8 is fixed inside the ball valve connecting column 3.

[0027] The ball valve assembly mechanism also includes: a connecting block 801 and a connecting slot 1101; the connecting block 801 is fixedly connected to the middle position of the lower end face of the ball valve output shaft 8, and the connecting block 801 has a cross-shaped structure; the connecting slot 1101 is opened on the upper end face of the eccentric ball 11, and the connecting block 801 and the connecting slot 1101 are plugged into each other. During use, when the ball valve output shaft 8 is installed inside the ball valve connecting column 3, the movement of the ball valve output shaft 8 drives the connecting block 801 to move, and the connecting block 801 moves and inserts into the connecting slot 1101, so that when the ball valve output shaft 8 rotates, it drives the eccentric ball 11 to rotate. The PTFE / reinforced PEEK composite valve seat and eccentric ball structure are adopted.

[0028] The specific usage and function of this second embodiment are as follows: During use, when the ball valve output shaft 8 is installed inside the ball valve connecting column 3, the moving mounting connector 7 drives the ball valve output shaft 8 to move. The mounting connector 7 inserts into the mounting slot 401, and the movement of the mounting connector 7 drives the mounting screw hole 9 on the mounting connector 7 to move, aligning the mounting screw hole 9 on the mounting connector 7 with the mounting screw hole 9 on the connecting panel 4. The mounting bolt 10 is installed inside the mounting screw hole 9, and the ball valve output shaft 8 is fixed in position inside the ball valve connecting column 3. When the ball valve output shaft 8 is installed inside the ball valve connecting column 3, the movement of the ball valve output shaft 8 drives the moving connecting block 801 to move, and the moving connecting block 801 inserts into the connecting slot 1101, causing the ball valve output shaft 8 to rotate, which in turn drives the eccentric ball 11 to rotate. A PTFE / reinforced PEEK composite valve seat and eccentric ball structure are used, combined with finite element analysis (FEA) to optimize the sealing pressure, achieving reliable sealing under low torque of 8-12 N·m. This breaks through the high torque dependence of traditional sealing structures, improving high-temperature durability by more than 30%, ensuring the quality of the three-way ball valve during use.

[0029] The following points should be noted in this article: 1. The accompanying drawings of this embodiment only involve the structures involved in the embodiments of this utility model. Other structures can refer to the general design.

[0030] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0031] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A corrosion-resistant sanitary three-way ball valve, comprising a ball valve body (1), a ball valve pipe (2), a ball valve connecting column (3), a connecting panel (4), a ball valve output shaft (8), an eccentric ball (11), a ball valve union mechanism, and a ball valve assembly mechanism; the ball valve body (1) is a cylindrical structure made of 316L stainless steel; the ball valve pipe (2) is provided in three sets, and the three sets of ball valve pipes (2) are respectively fixedly connected to the outer end face of the ball valve body (1); characterized in that: The ball valve connecting column (3) is fixedly connected to the middle position of the upper end face of the ball valve body (1); the connecting panel (4) is fixedly connected to the upper end face of the ball valve connecting column (3); the ball valve output shaft (8) rotates inside the ball valve connecting column (3); the eccentric ball (11) is rotatably connected inside the ball valve body (1), and the eccentric ball (11) is located below the ball valve output shaft (8); the ball valve swivel mechanism is provided in three sets, and the three sets of ball valve swivel mechanisms are respectively set on the outer end face of the three sets of ball valve pipes (2); the ball valve assembly mechanism is set inside the ball valve body (1).

2. The corrosion-resistant sanitary three-way ball valve as described in claim 1, characterized in that: The ball valve union mechanism includes: a union protrusion (5); the union protrusion (5) is fixedly connected to the outer side of the outer end face of the ball valve pipe (2), and the union protrusion (5) is a ring-shaped structure.

3. The corrosion-resistant sanitary three-way ball valve as described in claim 2, characterized in that: The ball valve coupling mechanism further includes a coupling groove (6); the coupling groove (6) is located in the middle of the outer end face of the coupling protrusion (5), and the coupling groove (6) is a circular groove structure.

4. The corrosion-resistant sanitary three-way ball valve as described in claim 1, characterized in that: The ball valve assembly mechanism includes: a mounting slot (401) and a mounting connector (7); the mounting slot (401) is located at the middle of the upper end face of the connecting panel (4); the mounting connector (7) is inserted into the mounting slot (401), and the ball valve output shaft (8) is rotatably connected to the middle of the inner end face of the mounting connector (7).

5. The corrosion-resistant sanitary three-way ball valve as described in claim 4, characterized in that: The ball valve assembly mechanism also includes: mounting screw holes (9) and mounting bolts (10); there are two sets of mounting screw holes (9), which are respectively opened on the left and right sides of the mounting connector (7) and the left and right sides of the lower end face of the connecting panel (4); there are two sets of mounting bolts (10), which are respectively threaded into the two sets of mounting screw holes (9).

6. The corrosion-resistant sanitary three-way ball valve as described in claim 1, characterized in that: The ball valve assembly mechanism further includes: a connecting plug (801) and a connecting slot (1101); the connecting plug (801) is fixedly connected to the middle position of the lower end face of the ball valve output shaft (8), and the connecting plug (801) has a cross-shaped structure; the connecting slot (1101) is opened on the upper end face of the eccentric ball (11), and the connecting plug (801) and the connecting slot (1101) are connected by insertion.

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