Floating ball valve with overpressure protection function

Abstract

The utility model relates to floating ball valve technical field especially relates to a floating ball valve with overpressure protection function, its technical scheme includes: the one side of valve body is equipped with the valve cover, is equipped with the handle on the valve body, the one side equipped with second flange plate of valve body away from the valve cover, the valve cover is equipped with the connecting pipe, the valve cover is connected with the protection tube through the connecting pipe, the one end equipped with first flange plate of protection tube away from the valve cover, be equipped with the guide rod in the protection tube, be equipped with the tension spring on the guide rod, be equipped with the baffle on the guide rod through the tension spring, and the area of baffle is greater than the inside diameter of connecting pipe, when the excessive pressure in pipeline, through the fluid in pipeline and push baffle to carry out the plugging to connecting pipe, the utility model discloses through the tension spring and the guide rod cooperation realizes the automatic reset of baffle, utilizes the through -hole misregistration design and guarantees the normal flow of medium, with simple and reliable mechanical structure, realizes the quick response overpressure protection, effectively promotes the security and practicality of floating ball valve.

Description

Technical Field

[0001] This utility model relates to the field of floating ball valve technology, specifically to a floating ball valve with overpressure protection function. Background Technology

[0002] A floating ball valve is a type of valve that features simple maintenance, flexibility and durability, high accuracy in liquid level control, water level control unaffected by water pressure, and tight opening and closing without leakage.

[0003] A search revealed that patent application CN202410456071.6 discloses a floating ball valve with overpressure protection, which achieves overpressure protection through the cooperation of a protection component, an inflation component, a transmission component, and a compression component. While this device achieves overpressure protection to a certain extent through the coordination of multiple components, its structure is relatively complex, and the interaction of multiple components increases the difficulty of installation and debugging, leading to higher maintenance costs. Furthermore, since multiple components work together, a failure in any one component can affect the overall overpressure protection effect, resulting in poor stability. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a floating ball valve with overpressure protection, thus solving the problems mentioned in the background art.

[0005] The solution to the above-mentioned technical problems provided by this utility model is as follows:

[0006] A floating ball valve with overpressure protection function includes a valve body, a valve cover installed on one side of the valve body, and a handle installed on the valve body;

[0007] The valve body is provided with a second flange on the side away from the valve cover, the valve cover is provided with a connecting pipe on one side, the valve cover is connected to a protective pipe through the connecting pipe, and the protective pipe is provided with a first flange at the end away from the valve cover.

[0008] The protective tube is equipped with a guide rod, and a tension spring is installed on the guide rod. A baffle is installed on the guide rod via the tension spring, and the area of ​​the baffle is larger than the inner diameter of the connecting tube. When the pressure inside the pipe is too high, the fluid inside the pipe pushes the baffle to block the connecting tube.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, a first through hole is provided at one end of the connecting pipe located inside the protective pipe, and a second through hole is provided on the baffle. The first through hole and the second through hole are offset from each other, so that when the baffle does not contact the connecting pipe, it does not affect the flow of the medium in the connecting pipe and the protective pipe.

[0011] The beneficial effects of adopting the above-mentioned further solutions are:

[0012] This staggered through-hole design ensures smooth media flow under normal valve operation while maintaining overpressure protection. It avoids increasing fluid resistance and affecting the pipeline system's operational efficiency due to the protective structure, while also providing the necessary conditions for baffle sealing of the connecting pipe to achieve overpressure protection. This allows the valve to function stably under both normal and overpressure conditions.

[0013] Furthermore, the baffle is provided with a guide plate, and the baffle is mounted on the guide rod by means of the guide plate.

[0014] The beneficial effects of adopting the above-mentioned further solutions are:

[0015] The limiting structure formed by the guide plate and guide rod effectively guides the movement direction of the baffle, preventing it from shifting or jamming under fluid pressure or during spring reset, ensuring a stable and accurate movement trajectory throughout its movement. This not only improves the reliability of the baffle's sealing of the connecting pipe and its reset action but also extends the service life of the baffle and related components, making the overpressure protection device more stable in operation.

[0016] Furthermore, the guide rods are arranged in a ring array inside the protective tube.

[0017] The beneficial effects of adopting the above-mentioned further solutions are:

[0018] The circular array of guide rods provides uniform and stable support to the baffle, ensuring a more balanced stress distribution when subjected to fluid pressure and spring tension. Regardless of the direction from which the fluid in the pipeline generates pressure, the baffle can move smoothly under the support of the guide rods, preventing tilting or jamming due to uneven stress. This ensures the effectiveness and stability of the overpressure protection function and improves the overall performance of the floating ball valve.

[0019] Furthermore, after the baffle moves within the protective tube, it is reset by a tension spring.

[0020] The beneficial effects of adopting the above-mentioned further solutions are:

[0021] The automatic reset function of the tension spring enables the baffle to quickly and automatically recover after the overpressure protection is activated, eliminating the need for manual operation and greatly improving the convenience and efficiency of valve use. At the same time, the tension spring reset process is smooth and reliable, ensuring the baffle accurately returns to its initial position, allowing the valve to quickly return to normal operation. This provides a guarantee for the continuous and stable operation of the pipeline system and reduces maintenance costs and manpower.

[0022] This utility model provides a floating ball valve with overpressure protection function. It has the following beneficial effects:

[0023] The connecting pipe and the baffle are respectively provided with a first through hole and a second through hole, which are staggered. When the baffle is not in contact with the connecting pipe, it does not affect the normal flow of the medium in the connecting pipe and the protective pipe, ensuring the smooth operation of the pipeline system under normal working conditions and preventing additional flow resistance due to the presence of the protective device. When the pressure in the pipeline is too high, the fluid can push the baffle to block the connecting pipe, preventing the pressure from rising further and damaging the pipeline system. This provides good overpressure protection and can effectively protect the pipeline and other equipment, avoiding safety accidents caused by overpressure.

[0024] The baffle is mounted on the guide rod by a tension spring. After the pressure returns to normal, it can automatically reset by the action of the tension spring without manual intervention. This is convenient and quick, allowing the valve to quickly return to normal working condition and ensuring the normal operation of the pipeline system. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0026] In the attached diagram:

[0027] Figure 1 This is a schematic diagram of the main appearance of this utility model;

[0028] Figure 2 This is a rear view schematic diagram of the present utility model;

[0029] Figure 3 This is a schematic diagram of the main sectional view of the protective tube of this utility model;

[0030] Figure 4 This is a schematic diagram of the rear cross-sectional structure of the protective tube of this utility model.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Handle; 2. Connecting pipe; 201. First through hole; 3. Protective pipe; 301. Guide rod; 302. Tension spring; 4. First flange; 5. Valve cover; 6. Valve body; 7. Second flange; 8. Baffle; 801. Second through hole; 802. Guide plate. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1 to 4 As shown, the embodiments provided by this utility model are as follows: Example 1

[0035] A floating ball valve with overpressure protection function includes a valve body 6, a valve cover 5 installed on one side of the valve body 6, a handle 1 installed on the valve body 6, a second flange 7 on the side of the valve body 6 away from the valve cover 5, a connecting pipe 2 on one side of the valve cover 5, and a protective pipe 3 connected to the valve cover 5 through the connecting pipe 2. A first flange 4 is provided at the end of the protective pipe 3 away from the valve cover 5. A guide rod 301 is provided inside the protective pipe 3. The guide rods 301 are arranged in a ring array inside the protective pipe 3. The ring array of guide rods 301 can provide uniform and stable support force for the baffle 8, so that the baffle 8 is subjected to more balanced force when bearing fluid pressure and tension spring 302. Regardless of the direction from which the fluid in the pipeline generates pressure, the baffle 8 can move smoothly under the support of the guide rod 301, avoiding tilting or jamming of the baffle 8 due to uneven force, thereby ensuring the effectiveness and stability of the overpressure protection function and improving the working performance of the entire floating ball valve. The guide rod 301 is equipped with a tension spring 302, and the baffle 8 is installed on the guide rod 301 through the tension spring 302. After the baffle 8 moves in the protection tube 3, it is reset by the tension spring 302. The automatic reset function of the tension spring 302 realizes the rapid and automatic recovery of the baffle 8 after the overpressure protection action, without the need for manual operation, which greatly improves the convenience of valve use and working efficiency. Meanwhile, the reset process of the tension spring 302 is smooth and reliable, ensuring that the baffle 8 accurately returns to its initial position, allowing the valve to quickly return to normal operation. This provides a guarantee for the continuous and stable operation of the pipeline system and reduces maintenance costs and manpower. The baffle 8 is equipped with a guide plate 802, which limits its installation on the guide rod 301. The limiting structure formed by the guide plate 802 and the guide rod 301 effectively guides the movement direction of the baffle 8, preventing it from shifting or jamming when pushed by fluid pressure or during the reset process of the tension spring 302. This ensures that the baffle 8 maintains a stable and accurate movement trajectory throughout its movement. This not only improves the reliability of the baffle 8 in sealing the connecting pipe 2 and the reset action, but also extends the service life of the baffle 8 and related components, making the overpressure protection device more stable. Furthermore, the area of ​​the baffle 8 is larger than the inner diameter of the connecting pipe 2. When the pressure inside the pipeline is too high, the fluid inside the pipeline pushes the baffle 8 to seal the connecting pipe 2. Example 2

[0036] To balance the performance requirements of valves under normal and overpressure conditions, for example, such as Figures 1 to 4 As shown, this utility model also includes: a first through hole 201 is provided at one end of the connecting pipe 2 located inside the protective pipe 3, and a second through hole 801 is provided on the baffle 8. The first through hole 201 and the second through hole 801 are staggered. When the baffle 8 is not in contact with the connecting pipe 2, it does not affect the flow of the medium in the connecting pipe 2 and the protective pipe 3. This structure of staggered through holes ensures that the medium can flow smoothly under normal working conditions while guaranteeing the overpressure protection function. It does not increase fluid resistance due to the existence of the protective structure, thus not affecting the normal operating efficiency of the pipeline system. It also provides the basic conditions for the baffle 8 to block the connecting pipe 2 to achieve overpressure protection, enabling the valve to function stably under both normal and overpressure conditions.

[0037] Working principle:

[0038] Under normal operating conditions, the medium flows through the channel connecting the valve body 6 and the valve cover 5. Because the through hole at one end of the connecting pipe 2 inside the protective pipe 3 is misaligned with the through hole on the baffle 8, and the baffle 8 does not contact the connecting pipe 2, the medium can flow freely within the connecting pipe 2 and the protective pipe 3, and the entire pipeline system maintains smooth operation.

[0039] When the pressure inside the pipeline suddenly increases, the overpressured fluid generates a strong thrust, pushing the baffle 8 inside the protective pipe 3 towards the connecting pipe 2. The area of ​​the baffle 8 is larger than the inner diameter of the connecting pipe 2. As the baffle 8 moves, it eventually seals the connecting pipe 2, preventing the medium from continuing to flow, thus avoiding damage to the pipeline system due to excessive pressure and achieving overpressure protection. During this process, the movement of the baffle 8 is driven by the pressure of the fluid inside the pipeline, utilizing the force generated by the pressure difference to activate the baffle 8.

[0040] Once the pressure inside the pipeline returns to normal, the tension spring 302 mounted on the guide rod 301 activates, using its elastic restoring force to pull the baffle 8, causing it to move and reset in the opposite direction on the guide rod 301. Because the baffle 8 is limited and mounted on the guide rod 301 by the guide plate 802, the reset process is stable and accurate. After the baffle 8 resets, it disengages from the connecting pipe 2, restoring the flow path of the medium in the connecting pipe 2 and the protective pipe 3. The floating ball valve returns to its normal operating state, preparing for the next working cycle.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A floating ball valve with overpressure protection function, comprising a valve body (6), a valve cover (5) mounted on one side of the valve body (6), and a handle (1) mounted on the valve body (6), characterized in that: The valve body (6) is provided with a second flange (7) on the side away from the valve cover (5), and a connecting pipe (2) is provided on one side of the valve cover (5). The valve cover (5) is connected to a protective pipe (3) through the connecting pipe (2). The protective pipe (3) is provided with a first flange (4) at the end away from the valve cover (5). The protective tube (3) is provided with a guide rod (301), and a tension spring (302) is provided on the guide rod (301). A baffle (8) is installed on the guide rod (301) through the tension spring (302), and the area of ​​the baffle (8) is larger than the inner diameter of the connecting tube (2). When the pressure inside the pipe is too high, the fluid inside the pipe pushes the baffle (8) to block the connecting tube (2).

2. The floating ball valve with overpressure protection function according to claim 1, characterized in that: The connecting pipe (2) has a first through hole (201) at one end inside the protective pipe (3), and the baffle (8) has a second through hole (801). The first through hole (201) and the second through hole (801) are offset. When the baffle (8) does not contact the connecting pipe (2), it does not affect the flow of the medium in the connecting pipe (2) and the protective pipe (3).

3. A floating ball valve with overpressure protection function according to claim 1, characterized in that: The baffle (8) is provided with a guide plate (802), and the baffle (8) is limited and installed on the guide rod (301) by the guide plate (802).

4. A floating ball valve with overpressure protection function according to claim 1, characterized in that: The guide rods (301) are arranged in a ring array inside the protective tube (3).

5. A floating ball valve with overpressure protection function according to claim 1, characterized in that: After the baffle (8) moves inside the protective tube (3), it is reset by the tension spring (302).

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