Sanitary manual butterfly valve

Abstract

The sanitary manual butterfly valve comprises a valve body assembly and a handle seat, the valve body assembly comprises a left shell and a right shell which are oppositely arranged, and a butterfly plate is arranged in the center of the interior of the valve body assembly. A sealing assembly formed by combining a sealing gasket I and a sealing gasket II is arranged between the left shell and the right shell on the outer side of the butterfly plate; a handle seat is arranged at the top of the valve body assembly, and a fixing sleeve connected with the connecting rod is arranged in the handle seat. The butterfly plate is arranged in the center of the interior of the valve body assembly, the first sealing gasket and the second sealing gasket are arranged on the two sides of the butterfly plate respectively, the sealing assembly is formed through combination, and the sealing performance of the valve body is remarkably improved. Medium leakage is effectively prevented, and safety and reliability of the valve in the using process are guaranteed. The depth of the fixing grooves formed in the inner sides of the left shell and the right shell is equal to the thickness of the first sealing gasket and the thickness of the second sealing gasket, and the installation precision and stability of the sealing gaskets are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of manual butterfly valve technology, specifically a sanitary manual butterfly valve. Background Technology

[0002] In industries with high hygiene requirements, such as food, pharmaceuticals, and cosmetics, valves play a crucial role in fluid transport. Sanitary manual butterfly valves, as commonly used fluid control devices, directly impact the hygiene and safety of the production process and product quality.

[0003] Early sanitary manual butterfly valves had several shortcomings. For example, in terms of sealing performance, traditional sealing structures often failed to completely prevent media leakage during long-term use, potentially leading to product contamination and impacting food safety and pharmaceutical quality. Regarding the connection and assembly of valve body components, some butterfly valves were not robust enough, or were inconvenient to disassemble and maintain, increasing equipment maintenance costs and downtime. Furthermore, the design of the butterfly plate's support and protection structure was inadequate, making the butterfly plate susceptible to wear and corrosion during long-term use, and allowing dust and impurities to easily enter the valve, affecting its performance and service life. As related industries increasingly demand higher hygiene standards and production efficiency, there is an urgent need for a sanitary manual butterfly valve with excellent sealing performance, robust assembly, easy maintenance, stable butterfly plate, and adequate protection to meet increasingly stringent production requirements. Utility Model Content

[0004] The purpose of this invention is to provide a sanitary manual butterfly valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sanitary manual butterfly valve, which includes a valve body assembly and a handle seat. The valve body assembly includes a left housing and a right housing arranged opposite to each other. A butterfly plate is arranged at the center inside the valve body assembly. Connecting rods are arranged at the upper and lower ends of the butterfly plate. A sealing assembly composed of a sealing gasket and a sealing gasket is arranged between the left housing and the right housing outside the butterfly plate. The sealing gasket and the sealing gasket are respectively arranged on both sides of the butterfly plate.

[0006] The left and right shells are evenly provided with connecting holes at their edges, and each connecting hole is provided with an internal hexagon bolt, and the top of the internal hexagon bolt is provided with a hexagon nut.

[0007] The valve body assembly is provided with a handle seat on top, and a fixing sleeve connected to the connecting rod is provided inside the handle seat. A handle rod is provided on one side of the fixing sleeve.

[0008] Preferably, the upper and lower ends of the inner sides of the left and right housings are provided with upper and lower slots that match the connecting rod, and the two upper slots wrap around the outer side of the upper connecting rod.

[0009] Preferably, the depth of the lower groove is greater than the length of the lower connecting rod, and a dust cover is provided at the opening of the lower groove.

[0010] Preferably, the top of the fixing sleeve is provided with an internal hexagon screw that connects to the top of the connecting rod, and a spring washer is provided at the connection between the internal hexagon screw and the fixing sleeve. A dust cap is provided on the top of the fixing sleeve outside the internal hexagon screw.

[0011] Preferably, the inner sides of both the left and right housings are provided with fixing grooves for installing sealing components, and the depths of the two fixing grooves are equal to the thicknesses of sealing gasket one and sealing gasket two, respectively.

[0012] Preferably, the bottom of the handle seat is provided with a limiting slot that engages with the top of the valve body assembly, and the top of one side of the handle seat is also provided with a range groove for the movement of the handle rod.

[0013] Preferably, a through hole is provided at the center of the top of the sealing assembly for the upper connecting rod of the butterfly plate to pass through.

[0014] This utility model relates to a sanitary manual butterfly valve, which has significant advantages over the prior art, specifically in the following aspects:

[0015] 1. By placing a butterfly plate at the center inside the valve body assembly, and placing sealing gasket one and sealing gasket two on both sides of the butterfly plate respectively, a sealing assembly is formed, significantly improving the sealing performance of the valve body. This design effectively prevents media leakage and ensures the safety and reliability of the valve during use. The fixing grooves provided on the inner sides of the left and right housings have a depth equal to the thickness of sealing gasket one and sealing gasket two, respectively, ensuring the installation accuracy and stability of the sealing gaskets and further enhancing the sealing effect.

[0016] 2. Connecting holes are evenly distributed along the edges of the left and right housings, and are connected using hex bolts and hex nuts. This design not only makes the valve body assembly more robust but also facilitates disassembly and maintenance. The bottom of the handle seat has a limiting slot that engages with the top of the valve body assembly, ensuring the accurate installation position of the handle seat. Simultaneously, a groove on the top of one side of the handle seat allows for a wider range of motion for the handle rod, making handle operation more flexible and convenient.

[0017] 3. Connecting rods are installed at both the upper and lower ends of the butterfly plate. The upper and lower ends of the inner sides of both the left and right housings are equipped with upper and lower grooves that match the connecting rods. The upper groove wraps around the outside of the upper connecting rod, and the depth of the lower groove is greater than the length of the lower connecting rod. A dust cover is installed at the opening. This design not only enhances the stability of the butterfly plate but also effectively prevents dust and impurities from entering, extending the valve's service life. The top of the fixing sleeve is equipped with an internal hexagonal screw that connects to the top of the connecting rod. A spring washer is installed at the connection point, and a dust cap is placed on the top of the fixing sleeve outside the internal hexagonal screw, further improving the robustness of the connecting rod connection and the dustproof effect. Attached Figure Description

[0018] Figure 1 This is an exploded structural diagram of the valve body assembly of this utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of the handle base of this utility model;

[0020] Figure 3 This is a schematic diagram of the opening structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the closed structure of this utility model;

[0022] In the diagram: 01. Dust cap; 02. Socket head screw; 03. Spring washer; 04. Fixing sleeve; 05. Handle seat; 06. Butterfly plate; 07. Dust cover; 08. Sealing assembly; 09. Right housing; 10. Socket head bolt; 11. Hex nut; 12. Connecting hole; 13. Connecting rod; 14. Sealing gasket one; 15. Valve body assembly; 16. Sealing gasket two; 17. Through hole; 18. Upper groove; 19. Left housing; 20. Limiting slot; 21. Range groove; 22. Handle rod; 23. Lower groove; 24. Fixing groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figure 1-4An embodiment of this utility model provides a sanitary manual butterfly valve, which includes a valve body assembly 15 and a handle seat 05. The valve body assembly 15 includes a left housing 19 and a right housing 09 arranged opposite each other. A butterfly plate 06 is arranged at the center inside the valve body assembly 15. A connecting rod 13 is arranged at the upper and lower ends of the butterfly plate 06. The upper and lower ends of the inner sides of the left housing 19 and the right housing 09 are provided with upper grooves 18 and lower grooves 23 that match the connecting rods 13, and the two upper grooves 18 wrap around the outer side of the upper connecting rod 13.

[0025] The depth of the lower slot 23 is greater than the length of the lower connecting rod 13, and a dust cover 07 is provided at the opening of the lower slot 23.

[0026] like Figure 1 As shown, the valve body assembly 15 mainly consists of a left housing 19 and a right housing 09 arranged opposite each other. The left housing 19 and the right housing 09 are connected together by bolts to form a sealed valve body space.

[0027] A butterfly plate 06 is located at the center of the valve body assembly 15. The butterfly plate 06 is the valve's switching component, and the valve is opened and closed by rotation. Connecting rods 13 are connected to the upper and lower ends of the butterfly plate 06, respectively. The upper and lower connecting rods 13 are fixedly connected to the butterfly plate 06 to ensure that the butterfly plate 06 remains stable during rotation.

[0028] The upper and lower ends of the inner sides of the left housing 19 and the right housing 09 are respectively provided with an upper slot 18 and a lower slot 23 that match the connecting rod 13. Specifically, the upper slot 18 is designed to wrap around the outside of the upper connecting rod 13 to ensure that the upper connecting rod 13 will not come out of the slot during rotation, thereby maintaining the stable operation of the butterfly plate 06.

[0029] The depth of the lower slot 23 is designed to be greater than the length of the lower connecting rod 13. This allows the lower connecting rod 13 to fully enter the lower slot 23 during the rotation of the butterfly plate 06, preventing the connecting rod 13 from being restricted in movement due to insufficient length. In addition, a dust cover 07 is provided at the opening of the lower slot 23. The function of the dust cover 07 is to prevent external dust and impurities from entering the slot, ensuring the cleanliness and sealing performance of the valve body.

[0030] The handle seat 05 is fixed to one side of the valve body assembly 15 and is connected to the butterfly plate 06 via a transmission mechanism. The operator rotates the handle seat 05 to drive the transmission mechanism, which in turn causes the butterfly plate 06 to rotate, thereby opening and closing the valve.

[0031] A sealing assembly 08, consisting of a sealing gasket 14 and a sealing gasket 2 16, is provided between the left housing 19 and the right housing 09 on the outer side of the butterfly plate 06. A through hole 17 for the upper connecting rod 13 of the butterfly plate 06 to pass through is also provided at the center of the top of the sealing assembly 08.

[0032] Sealing gasket 14 and sealing gasket 2 16 are respectively installed on both sides of butterfly plate 06.

[0033] The inner sides of both the left housing 19 and the right housing 09 are provided with fixing grooves 24 for installing the sealing assembly 08. The depth of the two fixing grooves 24 is equal to the thickness of the sealing gasket 14 and the sealing gasket 26, respectively.

[0034] The butterfly plate 06 is the core component of the device, and its two sides are in contact with sealing gasket 14 and sealing gasket 2 16 respectively.

[0035] The upper connecting rod 13 of the butterfly plate 06 passes through the through hole 17 of the sealing assembly 08 to ensure that the butterfly plate 06 remains stable during movement.

[0036] The left housing 19 and the right housing 09 are located on both sides of the butterfly plate 06, forming a sealed cavity.

[0037] The inner sides of both the left housing 19 and the right housing 09 are provided with fixing grooves 24 for installing the sealing assembly 08.

[0038] The depths of the two fixing grooves 24 are equal to the thicknesses of sealing gasket 14 and sealing gasket 2 16, respectively, to ensure that the sealing gaskets can be tightly embedded and prevent leakage.

[0039] The sealing assembly 08 is composed of sealing gasket 14 and sealing gasket 2 16, which are respectively disposed on both sides of the butterfly plate 06.

[0040] The materials of sealing gasket 14 and sealing gasket 26 are preferably high-temperature resistant and corrosion-resistant rubber or plastic to ensure long-term reliability.

[0041] A through hole 17 is provided at the center of the top of the sealing assembly 08, through which the upper connecting rod 13 of the butterfly plate 06 passes, ensuring the stability of the sealing assembly 08 during the movement of the butterfly plate 06.

[0042] Connection holes 12 are evenly provided at the edges of the left housing 19 and the right housing 09. Each connection hole 12 is provided with an internal hex bolt 10, and a hex nut 11 is installed on the top of each internal hex bolt 10.

[0043] Several connection holes 12 are evenly distributed along the edge of the left housing 19. The number and position of the connection holes 12 are designed according to the actual application requirements to ensure the firmness and stability of the connection.

[0044] The material and shape of the right housing 09 match those of the left housing 19, and it also has connecting holes 12 evenly distributed along its edges, corresponding to those of the left housing 19. The design of the right housing 09 ensures that it fits snugly against the left housing 19, forming a complete device housing.

[0045] The connecting hole 12 is a circular hole, the diameter of which is designed according to the size of the hexagon socket head cap screw 10 to ensure that the hexagon socket head cap screw 10 can be smoothly inserted and fixed. The inner wall of the connecting hole 12 is smooth to reduce the friction when the hexagon socket head cap screw 10 is inserted.

[0046] The hex socket head cap screw 10 is made of high-strength steel and has a hexagonal head for easy tightening and loosening with a hex wrench. The length of the hex socket head cap screw 10 is designed according to the thickness of the left housing 19 and the right housing 09 to ensure that it can pass through the connecting hole 12 and has sufficient length exposed for installing the hex nut 11.

[0047] The hex nut 11 is also made of high-strength steel. It is hexagonal in shape with a threaded hole inside, which matches the thread of the socket head cap screw 10. The size of the hex nut 11 is selected according to the thread specification of the socket head cap screw 10 to ensure a tight fit.

[0048] The valve body assembly 15 is provided with a handle seat 05 on the top, and a fixing sleeve 04 connected to the connecting rod 13 is provided inside the handle seat 05. A handle rod 22 is provided on one side of the fixing sleeve 04.

[0049] The top of the fixing sleeve 04 is provided with an internal hex screw 02 that is connected to the top of the connecting rod 13, and a spring washer 03 is provided at the connection between the internal hex screw 02 and the fixing sleeve 04. A dust cap 01 is provided on the top of the fixing sleeve 04 outside the internal hex screw 02.

[0050] The bottom of the handle seat 05 is provided with a limiting slot 20 that engages with the top of the valve body assembly 15, and the top of one side of the handle seat 05 is also provided with a range groove 21 for the movement of the handle rod 22.

[0051] The top of the valve body assembly 15 is provided with a handle seat 05, which is used to support and fix the handle rod 22 so that it can move within a predetermined range.

[0052] Inside the handle seat 05, there is a retaining sleeve 04 that connects to the connecting rod 13. The retaining sleeve 04 is precision machined to ensure a tight and reliable connection with the connecting rod 13. A handle rod 22 is provided on one side of the retaining sleeve 04. The handle rod 22 is linked with the connecting rod 13 through the retaining sleeve 04, thereby realizing the control of the valve body assembly 15.

[0053] Specifically, the top of the fixing sleeve 04 is provided with an internal hexagon screw 02 that connects to the top of the connecting rod 13. The internal hexagon screw 02 is made of high-strength alloy material, which has high torsional strength and corrosion resistance. A spring washer 03 is provided at the connection between the internal hexagon screw 02 and the fixing sleeve 04. The function of the spring washer 03 is to provide a certain preload to ensure that the internal hexagon screw 02 will not loosen under vibration or impact conditions, thereby ensuring the reliability of the connection.

[0054] On the outside of the socket head cap 02, a dust cap 01 is also provided on the top of the retaining sleeve 04. The dust cap 01 is made of a soft and weather-resistant material, and its main function is to prevent dust, moisture and other impurities from entering the connection between the socket head cap 02 and the retaining sleeve 04, thereby extending the service life of the components.

[0055] The bottom of the handle seat 05 is provided with a limiting slot 20 that engages with the top of the valve body assembly 15. The limiting slot 20, through precise dimensional design and engaging structure, ensures that the handle seat 05 can be securely installed on the valve body assembly 15 and is not easy to fall off.

[0056] In addition, a range groove 21 for the movement of the handle lever 22 is provided on the top of one side of the handle base 05. The shape and size of the range groove 21 are reasonably designed to ensure that the handle lever 22 will not exceed the predetermined range during movement, thereby avoiding equipment damage caused by improper operation. The inner wall of the range groove 21 is smooth, reducing the frictional resistance of the handle lever 22 during movement and improving the flexibility and comfort of operation.

[0057] During operation, the user holds the handle 22 and moves it back and forth or left and right, which drives the fixed sleeve 04 and the connecting rod 13 to control the opening and closing of the valve body assembly 15. The range of motion of the handle 22 is limited by the range groove 21 to ensure the accuracy and safety of operation.

[0058] When this application embodiment is used,

[0059] Fixed the connecting rod 13 to the upper and lower ends of the butterfly plate 06, ensuring a secure connection. Insert the first sealing gasket 14 and the second sealing gasket 16 into the fixing grooves 24 inside the left housing 19 and right housing 09, respectively. Since the depth of the fixing grooves 24 is equal to the thickness of the sealing gaskets, this ensures a tight fit. Then, place the butterfly plate 06 along with the connecting rod 13 into the valve body assembly 15, ensuring that both sides of the butterfly plate 06 contact the first sealing gasket 14 and the second sealing gasket 16, with the upper connecting rod 13 of the butterfly plate 06 passing through the through hole 17 at the top of the sealing assembly 08. Place the left housing 19 and right housing 09 facing each other, so that the upper groove 18 covers the upper connecting rod 13, and the lower groove 23 accommodates the lower connecting rod 13 (note that the depth of the lower groove 23 is greater than the length of the lower connecting rod 13). Insert the hex bolt 10 into the connecting hole 12, then install the hex nut 11 on the top of the bolt and tighten the nut with a hex wrench to firmly connect the left housing 19 and the right housing 09 together, forming a sealed valve body space. After inserting the lower connecting rod 13 into the lower slot 23, install the dust cover 07 at the opening of the lower slot 23 to prevent external dust and impurities from entering. Align the limiting slot 20 at the bottom of the handle seat 05 with the corresponding position on the top of the valve body assembly 15 and snap the handle seat 05 in place. Ensure that the handle seat 05 is firmly installed and not easily detached. Align the fixing sleeve 04 with the top of the connecting rod 13, and use the hex bolt 02 to pass through the fixing sleeve 04 and connect it to the connecting rod 13. Install the spring washer 03 at the connection to provide pre-tightening force and prevent the hex bolt 02 from loosening. Then install the dust cap 01 on the top of the fixing sleeve 04 to prevent dust, moisture and other impurities from entering the connection part. Finally, install the handle rod 22 on one side of the fixing sleeve 04 so that it can be linked with the connecting rod 13 through the fixing sleeve 04.

[0060] Opening the valve: The user holds the handle 22 and moves it within the range defined by the range groove 21 in a predetermined operating direction (usually counterclockwise). The movement of the handle 22 causes the fixed sleeve 04 to rotate, which in turn causes the connecting rod 13 to rotate via the hex socket screw 02, thereby causing the butterfly plate 06 to rotate around its axis. When the butterfly plate 06 rotates to a position parallel to the fluid flow direction, the valve opens, and fluid can pass through the valve body assembly 15.

[0061] To close the valve: The user moves the handle 22 within the range defined by the range slot 21 in the opposite direction to opening the valve (usually clockwise). The handle 22 causes the fixed sleeve 04, connecting rod 13, and butterfly plate 06 to rotate in the opposite direction. When the butterfly plate 06 rotates to a position perpendicular to the fluid flow direction, the sealing gaskets 14 and 16 on both sides of the butterfly plate 06 fit tightly together, preventing fluid from passing through, and the valve closes.

[0062] 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.

[0063] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0064] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0065] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sanitary manual butterfly valve, comprising a valve body assembly (15) and a handle seat (05), characterized in that: the valve body assembly (15) comprises a left housing (19) and a right housing (09) arranged opposite to each other, a butterfly plate (06) is provided at the center inside the valve body assembly (15), connecting rods (13) are provided at the upper and lower ends of the butterfly plate (06), and a sealing assembly (08) composed of a sealing gasket one (14) and a sealing gasket two (16) is provided between the left housing (19) and the right housing (09) outside the butterfly plate (06), the sealing gasket one (14) and the sealing gasket two (16) are respectively provided on both sides of the butterfly plate (06); The left housing (19) and the right housing (09) are both provided with connecting holes (12) at their edges. Each connecting hole (12) is provided with an internal hexagon bolt (10), and the top of the internal hexagon bolt (10) is provided with a hexagonal nut (11). The valve body assembly (15) is provided with a handle seat (05) on the top, and a fixing sleeve (04) connected to the connecting rod (13) is provided inside the handle seat (05), and a handle rod (22) is provided on one side of the fixing sleeve (04).

2. The sanitary manual butterfly valve according to claim 1, characterized in that: The upper and lower ends of the inner sides of the left housing (19) and the right housing (09) are provided with upper slots (18) and lower slots (23) that match the connecting rod (13), and the two upper slots (18) are wrapped around the outer side of the upper connecting rod (13).

3. The sanitary manual butterfly valve according to claim 2, characterized in that: The depth of the lower slot (23) is greater than the length of the lower connecting rod (13), and a dust cover (07) is provided at the opening of the lower slot (23).

4. The sanitary manual butterfly valve according to claim 1, characterized in that: The top of the fixed sleeve (04) is provided with an internal hexagon screw (02) connected to the top of the connecting rod (13), and a spring washer (03) is provided at the connection between the internal hexagon screw (02) and the fixed sleeve (04). A dust cap (01) is provided on the top of the fixed sleeve (04) outside the internal hexagon screw (02).

5. The sanitary manual butterfly valve according to claim 1, characterized in that: The inner sides of the left housing (19) and the right housing (09) are provided with fixing grooves (24) for installing sealing components (08), and the depths of the two fixing grooves (24) are equal to the thicknesses of sealing gasket one (14) and sealing gasket two (16), respectively.

6. The sanitary manual butterfly valve according to claim 1, characterized in that: The bottom of the handle seat (05) is provided with a limiting slot (20) that is snapped onto the top of the valve body assembly (15), and the top of one side of the handle seat (05) is also provided with a range groove (21) for the movement of the handle rod (22).

7. The sanitary manual butterfly valve according to claim 1, characterized in that: The sealing assembly (08) also has a through hole (17) at the center of the top for the upper connecting rod (13) of the butterfly plate (06) to pass through.

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