Floating ball valve

Abstract

The utility model relates to the technical field of floating ball valves, in particular to a floating ball valve which comprises a valve body, a water inlet, a water outlet and valve seats, a mounting cavity is formed in the valve body, the valve seats are arranged at the two ends of the mounting cavity, valve balls are arranged in the mounting cavity, a valve rod is rotationally connected to the top of the valve body, and the valve rod is rotationally connected to the top of the valve body. The valve rod is fixedly connected with the valve ball, a handle is arranged on the valve rod, an abutting mechanism is arranged in the mounting cavity, and an impurity outlet is formed in the bottom of the mounting cavity; the abutting piece is arranged in the mounting cavity and connected with the mounting groove through the spring, the abutting piece is tightly attached to the outer side wall of the valve ball under the elastic force effect of the spring, the spring can prevent a medium from exerting pressure on the valve ball, and the situation that under the pressure exerted on the valve ball by the medium, the attaching degree of the valve seat and the valve ball is reduced, and consequently leakage of the valve occurs is avoided; and the impurity removal opening communicates with the outside by rotating the plug, so that impurities accumulated at the bottom of the mounting cavity can be conveniently removed.

Description

Technical Field

[0001] The present application relates to the field of floating ball valves, and in particular to a floating ball valve. Background Art

[0002] Among various valves, the ball valve has the smallest flow resistance. When the full-diameter ball valve is opened, the ball channel, valve body channel and connecting pipe diameter are equal and form one diameter, and the medium can flow through almost without loss. The ball of the floating ball valve is floating. Under the action of the medium pressure, the ball can produce a certain displacement and press tightly on the sealing surface of the outlet end to ensure the sealing of the outlet end. The ball valve uses a ball with a circular through hole as the opening and closing part; the ball channel diameter is the same as the pipeline diameter, with small flow resistance and large flow capacity; the valve stem is bottom-mounted, which prevents the accident of the valve stem penetrating and ensures safe use;

[0003] Referring to the Chinese patent application with the announcement number CN220505931U, a floating ball valve is disclosed. When the valve body needs to be opened or closed, the second connecting plate is driven to rotate by the handle, so that the rotation of the second connecting plate drives the connecting block to rotate, and drives the valve stem to rotate, so as to realize the opening and closing operation of the valve body. At this time, the connecting plate is released. Even if the elastic telescopic rod generates an upward thrust, the clamping groove limits the upward movement of the screw rod to prevent the second connecting plate from moving up. Compared with the prior art, the operation of pressing the handle down all the time without releasing the handle is eliminated, which is more labor-saving.

[0004] However, in the prior art, since the valve ball is set in a floating manner, after the valve is closed, the one-way medium at the water inlet end will exert pressure on the valve ball, which can easily cause the valve ball to shift, reducing the fit between the valve seat and the valve ball, and easily causing leakage. At the same time, when the ball valve is adjusting the pipeline medium, the medium flows into the installation cavity outside the valve ball, and impurities contained in the medium will accumulate in the installation cavity, causing pollution to subsequent media. For this reason, we have designed a floating ball valve. Utility Model Content

[0005] A floating ball valve provided in an embodiment of the present application seals and abuts the outer wall of the valve ball without affecting the displacement of the valve ball, thereby preventing the medium from exerting pressure on the valve ball, thereby preventing the valve from leaking due to reduced fit between the valve seat and the valve ball. At the same time, impurities contained in the medium will accumulate in the installation cavity, causing contamination to subsequent media. This is a technical problem.

[0006] The embodiment of the present application provides a floating ball valve including a valve body, a water inlet, a water outlet and a valve seat, wherein a mounting cavity is provided in the valve body, the valve seats are arranged at both ends of the mounting cavity, a valve ball is arranged in the mounting cavity, a valve stem is rotatably connected to the top of the valve body, the valve stem is fixedly connected to the valve ball, a handle is arranged on the valve stem, an abutment mechanism is arranged in the mounting cavity, and a miscellaneous outlet is arranged at the bottom of the mounting cavity;

[0007] By providing flange mounting plates at both ends of the valve body, it is convenient to install the valve on the circulation pipeline and to control the circulation of the pipeline. When the handle is rotated, the valve stem drives the coaxially fixed valve ball to rotate. At the same time, by adjusting the rotation angle of the valve ball, it is convenient to achieve throttling of the medium in the circulation pipeline. Abutments are provided at the water inlet and outlet ends. The abutments are connected to the mounting groove by a spring. Under the elastic force of the spring, the abutments are tightly attached to the outer wall of the valve ball. The spring will hinder the pressure of the medium on the valve ball, so as to avoid the impact pressure of the medium on the valve ball, which will reduce the fit between the valve seat and the valve ball and cause the valve to leak. When the medium flows into the mounting cavity outside the valve ball, the impurities contained in the medium are accumulated at the bottom of the mounting cavity under the action of gravity and the scratching of the abutments. At the same time, the plug is rotated to connect the outlet with the outside world, so as to facilitate the outflow of impurities.

[0008] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0009] 1. In the present application, a plurality of mounting grooves are provided in the mounting cavity of the valve body, and an abutment is provided in the mounting cavity. The abutment is connected to the mounting groove by a spring. Under the elastic force of the spring, the abutment is tightly attached to the outer wall of the valve ball. The spring prevents the medium from exerting pressure on the valve ball, thereby preventing the valve from leaking due to the reduced fit between the valve seat and the valve ball caused by the pressure exerted by the medium on the valve ball.

[0010] 2. The present application provides a debris outlet at the bottom of the installation cavity. When the medium flows into the installation cavity outside the valve ball, the impurities contained in the medium are accumulated at the bottom of the installation cavity under the action of gravity and the friction of the abutment. At the same time, the plug is rotated to connect the debris outlet with the outside world, so as to facilitate the removal of impurities accumulated at the bottom of the installation cavity.

[0011] In some embodiments, the abutment mechanism is used to prevent the valve ball from being impacted by the medium and the fit between the valve ball and the valve seat is reduced. The abutment mechanism includes an abutment member. A plurality of mounting grooves are provided on the inner wall of the mounting cavity. The abutment member is arranged at an end of the mounting cavity away from the water inlet. The abutment member is movably connected to the valve ball. A plurality of connecting rods are provided on the abutment member. A sliding block is fixedly connected to one end of the connecting rod close to the mounting groove. One end of the spring is fixedly connected to the sliding block, and the other end is fixedly connected to the mounting groove.

[0012] By adopting the above technical solution, by providing abutments at both the water inlet and the water outlet, when the valve is closed and the valve ball is impacted by the medium, the abutments will cling to the outer wall of the valve ball under the elastic force of the spring, and the spring will prevent the medium from exerting pressure on the valve ball, thereby avoiding a reduction in the fit between the valve seat and the valve ball.

[0013] Optionally, an end of the valve stem away from the valve ball is provided with an external thread, a fixing bolt is provided above the handle, and an internal thread matching the external thread is provided on the inner side wall of the fixing bolt;

[0014] By adopting the above technical solution, when the handle is rotated, the valve stem drives the coaxially fixed valve ball to rotate, and at the same time, the rotation angle of the valve ball is adjusted to facilitate throttling of the medium in the flow pipeline.

[0015] In some embodiments, a plug is provided on the outlet located on the outer side of the valve body, and a sealing rubber pad is provided between the plug and the outlet;

[0016] By adopting the above technical solution, when the medium flows into the installation cavity outside the valve ball, the impurities contained in the medium are accumulated at the bottom of the installation cavity under the action of gravity and the scratch of the abutment part. At the same time, the plug is rotated to connect the impurity outlet with the outside to facilitate the outflow of impurities. Optionally, the impurities can be brought out of the valve body from the bottom of the installation cavity by injecting clean water into the valve body.

[0017] In this embodiment, the outer wall of the sliding block is tightly arranged with the inner wall of the mounting groove, the sliding block and the outer side of one end of the sliding block close to the connecting rod are provided with a sealing ring, both ends of the valve body are provided with flange mounting plates, and a sealing ring is provided in the mounting cavity;

[0018] By adopting the above technical solution, a sealing ring is provided on the outer side of one end of the sliding block close to the connecting rod, and the outer side of the sealing ring is arranged in close contact with the inner wall of the installation groove, thereby preventing the spring in the installation groove from being corroded by the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 A schematic diagram of the structure of a floating ball valve provided in an embodiment of the present application;

[0021] Figure 2 A front view of a floating ball valve provided in an embodiment of the present application;

[0022] Figure 3 A side view of a floating ball valve provided in an embodiment of the present application;

[0023] Figure 4 Based Figure 3 Cross-sectional view along AA direction;

[0024] Figure 5 for Figure 4 An enlarged schematic diagram of part B.

[0025] Among them, the reference numerals in the figure are:

[0026] 1. Valve body; 2. Water inlet; 3. Water outlet; 4. Flange mounting plate; 5. Valve seat; 6. Valve stem; 7. Valve ball; 8. Handle; 9. Sealing ring; 10. Water outlet; 11. Plug; 12. Abutment; 13. Mounting groove; 14. Sliding block; 15. Spring; 16. Fixing bolt. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0033] It should be noted that, in the present application, words such as "in the present embodiment", "exemplarily", "for example", etc. are used to indicate examples, illustrations or explanations. Any embodiment or design described in the present application as "in the present embodiment", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in the present embodiment", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] The ball of the floating ball valve floats. Under the action of the medium pressure, the ball can produce a certain displacement and press tightly on the sealing surface of the outlet end to ensure the sealing of the outlet end. The ball valve uses a ball with a circular through hole as an opening and closing part; the diameter of the ball channel is the same as the diameter of the pipeline, with small flow resistance and large flow capacity; the valve stem is bottom-mounted, which prevents the accident of the valve stem penetrating and ensures safe use.

[0035] The floating ball valve in the related technology, when opening and closing the valve body, drives the connecting plate 2 to rotate through the handle, so that the rotation of the connecting plate 2 drives the connecting block to rotate, and drives the valve stem to rotate, to realize the opening and closing operation of the valve body. At this time, the connecting plate is released. Even if the elastic telescopic rod generates an upward thrust, the clamping groove limits the upward movement of the screw to prevent the connecting plate 2 from moving up. Compared with the existing technology, it eliminates the need to keep pressing the handle down without releasing it, which is more labor-saving.

[0036] Based on this, in order to improve the problem in the related technology that the one-way medium will cause pressure on the valve ball, which may easily cause the valve ball to shift, thereby reducing the fit between the valve seat and the valve ball, easily causing leakage, and impurities contained in the medium will accumulate in the installation cavity, causing contamination to subsequent media, the embodiment of the present application provides the following solution.

[0037] See also Figures 1 to 5A floating ball valve comprises a valve body 1, a water inlet 2, a water outlet 3 and a valve seat 5. A mounting cavity is provided in the valve body 1. The valve seats 5 are arranged at both ends of the mounting cavity. A valve ball 7 is arranged in the mounting cavity. A valve stem 6 is rotatably connected to the top of the valve body 1. The valve stem 6 is fixedly connected to the valve ball 7. A handle 8 is arranged on the valve stem 6. An abutment mechanism is arranged in the mounting cavity. The abutment mechanism is used to prevent the valve ball 7 from being impacted by a medium and the fit between the valve ball 7 and the valve seat 5 is reduced.

[0038] The abutment mechanism includes an abutment member 12, a plurality of mounting grooves 13 are provided on the inner wall of the mounting cavity, the abutment member 12 is arranged at one end of the mounting cavity away from the water inlet 2, the abutment member 12 is movably connected to the valve ball 7, a plurality of connecting rods are provided on the abutment member 12, one end of the connecting rod close to the mounting groove 13 is fixedly connected to a sliding block 14, one end of the spring 15 is fixedly connected to the sliding block 14, and the other end is fixedly connected to the mounting groove 13;

[0039] The effect of this arrangement is that abutment members 12 are provided at both the water inlet 2 and the water outlet 3. When the valve is closed, when the valve ball 7 is impacted by the medium, under the elastic force of the spring 15, the abutment member 12 clings to the outer wall of the valve ball 7. The spring 15 prevents the medium from exerting pressure on the valve ball 7, thereby preventing the fit between the valve seat 5 and the valve ball 7 from being reduced.

[0040] See also Figure 4 and Figure 5 The outer wall of the sliding block 14 is tightly arranged with the inner wall of the mounting groove 13, and a sealing ring is arranged on the outer side of the sliding block 14, and one end of the sliding block 14 close to the connecting rod;

[0041] In this arrangement, a sealing ring is provided on the outer side of the end of the sliding block 14 close to the connecting rod, and the outer side of the sealing ring is closely arranged against the inner wall of the installation groove 13, so as to prevent the spring 15 in the installation groove 13 from being corroded by the medium.

[0042] See also Figure 4 and Figure 5 A miscellaneous outlet 10 is provided at the bottom of the installation cavity, a plug 11 is provided on the miscellaneous outlet 10 located outside the valve body 1, and a sealing rubber pad is provided between the plug 11 and the miscellaneous outlet 10;

[0043] The effect of such a configuration is that when the medium flows into the installation cavity outside the valve ball 7, the impurities contained in the medium are accumulated at the bottom of the installation cavity under the action of gravity and the scraping of the abutment 12. At the same time, the plug 11 is rotated to connect the impurity outlet 10 with the outside, which facilitates the outflow of impurities and prevents the impurities contained in the medium from accumulating in the installation cavity and causing pollution to the subsequent medium.

[0044] See also Figure 1 and Figure 4 , flange mounting plates 4 are provided at both ends of the valve body 1, and a sealing ring 9 is provided in the mounting cavity;

[0045] In this way, by providing flange mounting plates 4 at both ends of the valve body 1, it is convenient to install the valve on the flow pipeline and to control the flow of the pipeline.

[0046] See also Figure 1 and Figure 2 The end of the valve stem 6 away from the valve ball 7 is provided with an external thread, a fixing bolt 16 is provided above the handle 8, and an internal thread matching the external thread is provided on the inner wall of the fixing bolt 16;

[0047] The effect of such arrangement is that when the handle 8 is rotated, the valve stem 6 drives the coaxially fixed valve ball 7 to rotate, and at the same time, the rotation angle of the valve ball 7 is adjusted to facilitate throttling of the medium in the flow pipeline.

[0048] From the above, we can see that the working principle of this application is as follows:

[0049] By providing abutment members 12 at both ends of the water inlet 2 and the water outlet 3, the abutment member 12 is connected to the mounting groove 13 via a spring 15. Under the elastic force of the spring 15, the abutment member 12 is tightly attached to the outer wall of the valve ball 7. The spring 15 prevents the medium from exerting pressure on the valve ball 7, thereby preventing the valve from leaking due to the reduced fit between the valve seat 5 and the valve ball 7 caused by the pressure exerted by the medium on the valve ball 7.

[0050] When the medium flows into the installation cavity outside the valve ball 7, the impurities contained in the medium are accumulated at the bottom of the installation cavity under the action of gravity and the friction of the abutment 12. At the same time, the plug 11 is rotated to connect the impurity outlet 10 with the outside world, so as to facilitate the cleaning of the impurities accumulated at the bottom of the installation cavity.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A floating ball valve, comprising a valve body (1), a water inlet (2), a water outlet (3) and a valve seat (5), characterized in that: The valve body (1) is provided with an installation cavity, the valve seat (5) is arranged at both ends of the installation cavity, a valve ball (7) is provided in the installation cavity, a valve stem (6) is rotatably connected to the top of the valve body (1), the valve stem (6) and the valve ball (7) are fixedly connected, a handle (8) is provided on the valve stem (6), an abutment mechanism is provided in the installation cavity, the abutment mechanism is used to prevent the valve ball (7) from being impacted by the medium and the fit between the valve ball (7) and the valve seat (5) is reduced, a miscellaneous outlet (10) is provided at the bottom of the installation cavity, and a plurality of installation grooves (13) are opened on the inner wall of the installation cavity; The abutment mechanism comprises: an abutment member (12), the abutment member (12) being arranged at one end of the installation cavity away from the water inlet (2), the abutment member (12) being movably connected to the valve ball (7), a plurality of connecting rods being arranged on the abutment member (12), and a sliding block (14) being fixedly connected to one end of the connecting rod close to the installation groove (13); A spring (15), one end of which is fixedly connected to the sliding block (14), and the other end of which is fixedly connected to the mounting groove (13).

2. A floating ball valve according to claim 1, characterized in that: An end of the valve stem (6) away from the valve ball (7) is provided with an external thread, a fixing bolt (16) is provided above the handle (8), and an internal thread matching the external thread is provided on the inner wall of the fixing bolt (16).

3. A floating ball valve according to claim 1, characterized in that: A plug (11) is provided on the outlet (10) located outside the valve body (1), and a sealing rubber pad is provided between the plug (11) and the outlet (10).

4. A floating ball valve according to claim 1, characterized in that: The outer wall of the sliding block (14) is tightly arranged with the inner wall of the mounting groove (13), and a sealing ring is arranged on the outer side of the sliding block (14) and one end of the sliding block (14) close to the connecting rod.

5. A floating ball valve according to claim 1, characterized in that: Both ends of the valve body (1) are provided with flange mounting plates (4), and a sealing ring (9) is provided in the mounting cavity.

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