Quick assembly food grade ball valve

Abstract

The utility model provides a kind of fast assembly food grade ball valve, it is related to food processing technical field, including valve body, the ball core is equipped in the valve body, the one end of the valve body is equipped with valve cover, the one end of the valve body and valve cover is fixed with quick mounting clamp structure, the outside of ball core in the valve body is equipped with surfacing alloy sealing surface. Adopt valve body, valve cover surfacing alloy sealing surface structure instead of original soft sealing surface, reduce the number of inner piece to minimum, eliminate the influence of liquid accumulation in valve seat gap, the channel size of valve body, valve cover, ball core three parts is completely identical, eliminate the turbulence and bubble generated by sudden channel size change of medium. Eliminate the scratch, cold flow etc. caused by soft sealing surface rubbing with ball core in switching process, the circular of valve inner cavity is changed into the spherical structure same with the gap of ball core outer diameter, ensure that when medium passes, flow area is consistent, flow velocity is not reduced because of the sudden increase of valve inner cavity.

Description

Technical Field

[0001] This utility model relates to the field of food processing technology, and in particular to a quick-assembly food-grade ball valve. Background Technology

[0002] With the continuous improvement of people's living standards, the safety of food and beverage production is receiving increasing attention. In the food processing industry, the cleaning and disinfection of pipelines is crucial. Inadequate cleaning of food processing pipelines can lead to a series of serious problems, the most prominent being excessive levels of microorganisms in the food and the easy growth of biofilms in the pipelines. As a key piece of equipment in the production process, the structure and quality of valves are issues that valve manufacturers need to consider.

[0003] Currently, one type of quick-assembly food-grade ball valve in existing technology is used primarily for low-pressure, small-diameter valves. Among these, floating ball valves are the most widely used due to their simple structure, quick operation, and the advantage of forming a full-flow pipeline when fully open. However, conventional floating ball valves use flange connections, where the valve is fixed to the pipeline with bolts and nuts. Connecting flanges need to be welded to both sides of the pipeline, and the bolt heads and nuts have a certain thickness. In small-diameter valve designs, due to structural limitations, interference frequently occurs between the pipeline mounting bolts and the valve body / bond connecting bolts. Furthermore, because existing products are manufactured to standard precision, the medium is more likely to adhere to the inner walls of the valve body / bond. During pipeline maintenance, even with flushing of the entire pipeline, it is difficult to completely remove the biofilm adhering to the valve body walls. Utility Model Content

[0004] The purpose of this invention is to solve the problem in existing technologies where flange connections use bolts and nuts to fix the valve to the pipeline. This requires welding connecting flanges to both sides of the pipeline, and the bolt heads and nuts have a certain thickness. In small-diameter valve designs, due to structural limitations, interference frequently occurs between the pipeline mounting bolts and the connecting bolts of the ball valve body and bonnet. Furthermore, existing products, due to their conventional manufacturing precision, allow the medium to more easily adhere to the inner walls of the valve body and bonnet. Even after flushing the entire pipeline during pipeline maintenance, it is difficult to completely remove the biofilm adhering to the body walls. Therefore, this invention proposes a quick-assembly food-grade ball valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quick-assembly food-grade ball valve, comprising a valve body, a ball core disposed within the valve body, a valve cover installed at one end of the valve body, quick-assembly clamp structures fixed at opposite ends of the valve body and the valve cover, and a weld overlay alloy sealing surface disposed on the outer side of the ball core within the valve body.

[0006] Preferably, the valve body has a spherical structure that matches the ball core.

[0007] Preferably, the inner cavities of the valve body and valve cover are both rounded.

[0008] Preferably, a wave-shaped gasket is provided between the valve body and the valve cover.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0010] In this utility model, the valve structure designed here uses an alloy sealing surface structure for the valve body and valve cover to replace the original soft sealing surface. This minimizes the number of internal components, eliminates the influence of liquid accumulation in the valve seat clearance, and ensures that the channel dimensions of the valve body, valve cover, and ball core are completely consistent, eliminating turbulence and air bubbles caused by sudden changes in channel dimensions. Furthermore, it eliminates the scratches and cold flow caused by friction between the soft sealing surface and the ball core during opening and closing. The valve body cavity is changed from a circular shape to a spherical structure with the same clearance as the outer diameter of the ball core, ensuring a consistent flow area when the medium passes through. This prevents the flow velocity from decreasing due to a sudden increase in the valve body cavity, thus avoiding impurities or particles remaining at the bottom of the valve body and instead driving them downstream in the pipeline. To achieve this function, all transition dimensions of the valve body and valve cover cavity are changed to rounded corners, improving the surface finish to a mirror effect, reducing the friction coefficient, and mitigating medium adhesion. The valve connection type is changed from a threaded connection to a quick-release clamp structure. Due to structural limitations, threaded connections require cutting the threaded pipe through welding to remove the valve during repairs, especially in compact installation spaces. Furthermore, some workshops prohibit open flame operations. Replacing the threaded connection with a quick-release clamp structure maintains the same minimum installation length as threaded connections while retaining the advantages of flange connections, allowing valve disassembly and replacement without cutting or removing parts of the pipe. The clamp also replaces the space occupied by bolts and nuts in flange structures. The fasteners are located on one side of the valve's overall shape, preventing interference with installation. A second seal between the valve body and cover uses a metal corrugated gasket instead of a graphite gasket, ensuring a tight seal, meeting design pressure requirements, and enhancing the valve's external fire resistance. Attached Figure Description

[0011] Figure 1 A cross-sectional view of a quick-assembly food-grade ball valve is provided for this utility model.

[0012] Illustration: 1. Valve body; 2. Quick-release clamp structure; 3. Valve cover; 4. Overlay alloy sealing surface; 5. Ball core; 6. Waveform gasket. Detailed Implementation

[0013] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0014] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0015] Example 1, such as Figure 1 As shown, this utility model provides a quick-assembly food-grade ball valve, including a valve body 1, a ball core 5 inside the valve body 1, a valve cover 3 installed at one end of the valve body 1, quick-assembly clamp structures 2 fixed at opposite ends of the valve body 1 and the valve cover 3, and a weld overlay alloy sealing surface 4 located outside the ball core 5 inside the valve body 1.

[0016] The overall effect of Embodiment 1 is that the valve structure designed in this way uses a structure of valve body 1 and valve cover 3 with welded alloy sealing surface 4 to replace the original soft sealing surface. On the one hand, it reduces the number of internal parts to a minimum, eliminates the influence of liquid accumulation in the valve seat mating gap, and makes the channel dimensions of the three parts, valve body 1, valve cover 3, and ball core 5, completely consistent, eliminating turbulence and bubbles caused by sudden changes in channel dimensions. On the other hand, it eliminates the effects of scratches and cold flow caused by friction between the soft sealing surface and the ball core 5 during opening and closing. The valve connection type is changed from threaded connection to quick-release clamp structure 2. Due to the structural limitations of the threaded connection, when the valve malfunctions and needs maintenance, the threaded connecting pipe must be cut open by welding to remove the valve. This operation is difficult to achieve, especially in the current situation where the installation space is tight and the sealing arrangement is compact. At the same time, some processing workshops do not allow open flame operations. After changing the connection type to quick-release clamp structure 2, it not only ensures the same minimum installation length as the threaded connection, but also realizes the advantages of the flange connection structure, allowing the valve to be disassembled and replaced without cutting or removing part of the pipe. Meanwhile, clamps replace the space occupied by bolts and nuts in a flange structure. The fasteners are located on one side of the valve's overall shape, preventing interference with the overall valve installation.

[0017] Example 2, as Figure 1 As shown, a spherical structure matching the ball core 5 is provided inside the valve body 1. The inner cavities of the valve body 1 and the valve cover 3 are both rounded. A wave-shaped pad 6 is provided between the valve body 1 and the valve cover 3.

[0018] The overall effect of Embodiment 2 is that the inner cavity of the valve body 1 is changed from a circular shape to a spherical structure with the same gap between the outer diameter and the outer diameter of the ball core 5. This ensures that the flow area is consistent when the medium passes through, and the flow velocity does not decrease due to the sudden increase in the inner cavity of the valve body 1. This prevents impurities or particles in the medium from remaining at the bottom of the valve body 1, but instead drives them to the downstream of the pipeline. At the same time, to achieve this function, all transition dimensions of the inner cavities of the valve body 1 and the valve cover 3 are changed to rounded corners, and the smoothness of the inner cavity is improved to a mirror effect, reducing the coefficient of friction and slowing down the adhesion of the medium. The second seal between the valve body 1 and the valve cover 3 uses a metal wave gasket 6 instead of a graphite gasket, which not only ensures a tight fit between the sealing surfaces and meets the design requirements for the sealing pressure, but also enhances the fireproof effect of the valve.

[0019] Working Principle: In this design, the valve structure uses a welded alloy sealing surface 4 on the valve body 1 and valve cover 3 instead of the original soft sealing surface. This minimizes the number of internal components, eliminating the impact of fluid accumulation in the valve seat clearance. The channel dimensions of the valve body 1, valve cover 3, and ball core 5 are made completely consistent, eliminating turbulence and air bubbles caused by sudden changes in channel dimensions. Furthermore, it eliminates scratches and cold flow caused by friction between the soft sealing surface and the ball core 5 during opening and closing. The inner cavity of the valve body 1 is changed from a circular shape to a spherical structure with the same outer diameter clearance as the ball core 5, ensuring consistent flow area and preventing a decrease in flow velocity due to sudden increases in the inner cavity of the valve body 1. This prevents impurities or particles from remaining at the bottom of the valve body 1 and instead carrying them downstream in the pipeline. To achieve this function, all transition dimensions of the inner cavities of the valve body 1 and valve cover 3 are changed to rounded corners, improving the inner cavity finish to a mirror effect, reducing the friction coefficient, and mitigating media adhesion. The valve connection type is changed from a threaded connection to a quick-release clamp structure 2. Due to structural limitations, threaded connections require cutting the threaded pipe through welding to remove the valve during repairs, especially in compact installation spaces. Furthermore, some workshops prohibit open flame operations. Changing the connection to a quick-release clamp structure (2) maintains the same minimum installation length as threaded connections while retaining the advantages of flange connections, allowing valve disassembly and replacement without cutting or removing parts of the pipe. The clamp also replaces the space occupied by bolts and nuts in flange structures. The fasteners are located on one side of the valve's overall shape, preventing interference with installation. A second seal between the valve body (1) and valve cover (3) uses a metal corrugated gasket (6) instead of a graphite gasket, ensuring a tight seal, meeting design pressure requirements, and enhancing the valve's external fire resistance.

[0020] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A quick-assembly food-grade ball valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a ball core (5), and a valve cover (3) is installed at one end of the valve body (1). The valve body (1) and the valve cover (3) are both fixed with quick-release clamp structures (2) at opposite ends. The valve body (1) is provided with a weld overlay alloy sealing surface (4) located outside the ball core (5).

2. The quick-assembly food-grade ball valve according to claim 1, characterized in that: The valve body (1) has a spherical structure that matches the ball core (5).

3. The quick-assembly food-grade ball valve according to claim 1, characterized in that: The inner cavities of the valve body (1) and valve cover (3) are both rounded.

4. A quick-assembly food-grade ball valve according to claim 1, characterized in that: A wave-shaped pad (6) is provided between the valve body (1) and the valve cover (3).

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