Ball valve

Abstract

The utility model discloses a ball valve, and belongs to the technical field of valves. The ball valve comprises a valve body, a valve ball and an adjusting assembly, the valve body comprises a valve main body and a convex neck, the valve main body is provided with a first channel for a fluid medium to pass through, a penetrating hole is formed in the side wall of the valve main body, and the convex neck is connected to the valve main body and annularly arranged around the penetrating hole; the valve ball is rotationally arranged in the first channel; the adjusting assembly comprises a valve sleeve and an integrated valve rod, the convex neck is sleeved with the valve sleeve, and a first limiting part is arranged in the valve sleeve; the valve rod sequentially penetrates through the valve sleeve, the convex neck and the penetrating hole and then is connected with the valve ball, and the valve ball can be driven to rotate by rotating the valve rod so as to open and close the first channel; the valve rod is provided with a second limiting part matched with the first limiting part so as to limit displacement of the valve rod in the axis direction of the valve rod. The ball valve is convenient to install, the situation that the ball valve cannot be normally opened and closed due to the fact that torque transmission of the split type valve rod is not smooth can be avoided, and therefore the use safety of the ball valve is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technology field, concretely relates to a ball valve. BACKGROUND

[0002] Ball valve is mainly used for cutting off or connecting fluid medium, also can be used for the adjustment and control of fluid medium, and because its sealing effect is good, small volume is widely used in pipeline system. Ball valve usually includes valve body, valve core, valve rod and handle, when using, rotates the valve rod through the handle to drive the valve core to rotate, thereby changes the communication state of the valve cavity in the valve body, reaches the purpose of controlling the on-off of pipeline.

[0003] The valve rod in the prior art is usually designed in a split type, when adjusting, the handle needs to be pressed first to drive the first valve rod to move downward, so that the first valve rod and the second valve rod are drivingly connected, and then the handle is rotated to drive the second valve rod and the valve core connected with the second valve rod to rotate through the first valve rod, so as to change the communication state of the valve cavity in the valve body. The setting mode has the following problems: 1) the installation process is complicated, the first valve rod and the second valve rod need to be aligned and installed to avoid the situation that the two cannot realize action transmission; 2) since the opening and closing of the ball valve depends on the force transmission, when the first valve rod and the second valve rod are misaligned, it is easy to cause the torque transmission to be not smooth, thereby causing the torque required for opening and closing the ball valve to increase, and in severe cases, the ball valve cannot be normally opened and closed, affecting the use safety of the whole ball valve.

[0004] Therefore, it is urgent to provide a ball valve to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at solving or at least alleviating part or all of the above problems. To this end, the utility model aims at providing a ball valve which is convenient to install and can avoid the situation that the ball valve cannot be normally opened and closed due to the torque transmission of the split valve rod being not smooth, thereby ensuring the use safety of the ball valve.

[0006] In order to achieve the above target, the utility model adopts the following technical scheme:

[0007] A ball valve, comprising:

[0008] A valve body comprising a valve main body and a convex neck, the valve main body having a first channel for fluid medium to pass through, and a through hole being formed on the side wall of the valve main body, the convex neck being connected to the valve main body and being annularly arranged around the through hole;

[0009] A valve ball being rotationally arranged in the first channel;

[0010] The adjusting assembly comprises a valve sleeve and an integrated valve rod, the valve sleeve is sleeved on the convex neck, and the valve sleeve is internally provided with a first limiting part; the valve rod is sequentially connected with the valve ball after penetrating through the valve sleeve, the convex neck and the penetrating hole, and rotation of the valve rod can drive the valve ball to rotate to open or close the first channel; the valve rod is provided with a second limiting part matched with the first limiting part to limit displacement of the valve rod along the axis direction of the valve rod.

[0011] As a preferred solution, the second limiting part is a limiting pin, and the valve rod is provided with a first plug hole penetrating in the radial direction of the valve rod, and the limiting pin is plugged into the first plug hole.

[0012] As a preferred solution, the side wall of the valve rod is outwardly provided with a convex part in the radial direction of the valve rod, and the convex part forms the second limiting part.

[0013] As a preferred solution, the convex neck is provided with two oppositely arranged limiting grooves on the side away from the first channel, and two ends of the second limiting part are respectively limited in the two limiting grooves.

[0014] As a preferred solution, the size of the second limiting part in the axis direction of the valve rod is equal to the groove depth of the limiting groove.

[0015] As a preferred solution, both ends of the second limiting part are sleeved with wear-resistant sleeves.

[0016] As a preferred solution, the size of the second limiting part in the axis direction of the valve rod is equal to the sum of twice the thickness of the wear-resistant sleeve and the groove depth of the limiting groove.

[0017] As a preferred solution, the limiting groove is an arc-shaped groove, and the central angle of the limiting groove is 90°.

[0018] As a preferred solution, the valve sleeve is provided with a stepped hole, the convex neck penetrates through the large-diameter section of the stepped hole, and the step between the large-diameter section and the small-diameter section of the stepped hole forms the first limiting part.

[0019] As a preferred solution, the adjusting assembly further comprises a handle, and the handle is connected to the end of the valve rod away from the valve ball.

[0020] As a preferred solution, the valve body and the convex neck are an integrally formed structure.

[0021] The beneficial effects of the utility model lie in:

[0022] The ball valve provided by the utility model has the valve rod arranged in an integrated structure, which can avoid the situation that the ball valve cannot be normally opened and closed due to unsmooth torque transmission of the split valve rod, thereby ensuring the use safety of the ball valve; in addition, compared with the split valve rod, the valve rod in the integrated structure only needs to be inserted into the valve body through the penetrating hole and connected with the valve ball, so that the assembly process is simple, convenient and fast; the first limiting part and the second limiting part matched with each other are arranged on the valve sleeve and the valve rod respectively, so that the movement of the valve rod along the axial direction is limited, so as to prevent the valve rod from being pulled out of the valve sleeve and affect the use performance of the ball valve. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and the drawings by those skilled in the art without any creative labor.

[0024] Figure 1 is the structure schematic view of the ball valve provided by the embodiment one of the utility model;

[0025] Figure 2 is the sectional structure schematic view of the ball valve provided by the embodiment one of the utility model;

[0026] Figure 3 is the explosion structure schematic view of the ball valve provided by the embodiment one of the utility model;

[0027] Figure 4 is the structure schematic view of the valve body provided by the embodiment one of the utility model;

[0028] Figure 5 is the structure schematic view of the valve rod provided by the embodiment one of the utility model;

[0029] Figure 6 is the structure schematic view of the handle provided by the embodiment one of the utility model;

[0030] Figure 7 is the sectional structure schematic view of the ball valve provided by the embodiment two of the utility model.

[0031] Signs:

[0032] 1, valve body; 11, valve body; 1101, first channel; 1102, penetrating hole; 12, convex neck; 121, limiting groove;

[0033] 2, valve ball; 201, second channel; 202, first plug-in slot;

[0034] 3, valve seat; 31, through hole;

[0035] 4, valve cover;

[0036] 5, adjusting assembly; 51, valve sleeve; 5101, stepped hole; 511, first limiting portion; 52, valve rod; 520, first insertion hole; 521, second limiting portion; 522, insertion end; 53, handle; 531, second insertion slot; 54, wear-resistant sleeve;

[0037] 6, sealing element. DETAILED DESCRIPTION

[0038] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described accompanying drawings.

[0039] In the present application, the terms "comprise", "contain", "have" or any other variant thereof are intended to cover non-exclusive inclusions, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0040] In the present application, the term "and / or" is a description of the association relationship between the associated objects, which means that there can be three kinds of relationships. For example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents a "and / or" relationship between the front and rear associated objects.

[0041] In the present application, the terms "connection", "combination", "coupling" and "installation" can be direct connection, combination, coupling or installation, or indirect connection, combination, coupling or installation. Among them, the direct connection means that two parts or components are connected together without setting intermediate parts, and the indirect connection means that two parts or components are connected with at least one intermediate part, and the two parts or components are connected through the intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0042] In the present utility model, the ordinary skilled in the art will understand that the relative terms (for example, "about", "approximately", "substantially" and the like) used in connection with a quantity or a condition are intended to include the stated value and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with a measurement of a particular value, the tolerance in making, assembling, using the particular value, and the like. Such terms should also be considered as disclosing a range defined by the absolute values of the two endpoints. The relative terms can refer to a certain percentage (for example, 1%, 5%, 10% or more) of the indicated value plus or minus. The numerical values not using the relative terms should also be disclosed as the particular values with tolerances. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), can refer to a certain degree (for example, 1 degree, 5 degrees, 10 degrees or more) plus or minus on the basis of the indicated angle.

[0043] In the present utility model, the ordinary skilled in the art will understand that the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts in combination.

[0044] In the present utility model, the terms "upper", "lower", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as limiting the embodiments of the present utility model. In addition, it should also be understood in the context that when referring to one element connected to another element "on" or "under", it can not only be directly connected to another element "on" or "under", but also indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the orientation terms such as upper side, lower side, left side, right side, front side and back side not only represent the positive orientation, but also can be understood as the lateral orientation. For example, the lower side can include the positive lower side, the left lower side, the right lower side, the front lower side and the back lower side, etc.

[0045] Embodiment One

[0046] Figure 1 The structure schematic diagram of the ball valve provided by the present embodiment is shown. Figure 2 The cross-sectional structure schematic diagram of the ball valve provided by the present embodiment is shown. Figure 3 The explosion structure schematic diagram of the ball valve provided by the present embodiment is shown. Figures 1-3As shown, the embodiment provides a ball valve, which comprises a valve body 1, a valve ball 2 and a valve seat 3, the valve body 1 has a first channel 1101 for fluid medium to pass through, the valve seat 3 is arranged in the valve body 1 and sealingly cooperates with the valve ball 2, the valve seat 3 has a through hole 31, the valve ball 2 has a second channel 201, the valve ball 2 is rotationally arranged in the first channel 1101 and can cooperate with the valve seat 3 to selectively open and close the first channel 1101. In use, when the valve ball 2 is rotated to the position that the second channel 201 intersects with the through hole 31 of the valve seat 3, the ball valve is in an open state; when the valve ball 2 is rotated to the position that the second channel 201 is misaligned with the through hole 31 of the valve seat 3, the ball valve is in a closed state. In addition, as the valve ball 2 rotates, the range of intersection between the second channel 201 and the through hole 31 of the valve seat 3 also changes, and the flow of the fluid medium passing through the first channel 1101 also changes, so that the control of the pipeline flow can be realized.

[0047] Optionally, the valve seat 3 is an annular rubber pad, which can tightly fit with the valve ball 2 by deforming itself to realize the sealing resistance of the two, and the valve seat 3 made of rubber material can also reduce the wear between the two when the valve ball 2 rotates, thereby prolonging the service life of the ball valve. In the embodiment, the number of valve seats 3 is two, and the two valve seats 3 are respectively located on both sides of the valve ball 2 and sealingly cooperate with the valve ball 2. This design can ensure the uniformity of the force on the valve seat 3, thereby realizing the good sealing effect between the valve seat 3 and the valve ball 2.

[0048] As shown in Figure 2 and Figure 3 , the ball valve further comprises a valve cover 4, one end of the first channel 1101 of the valve body 1 forms a connecting joint for connecting external pipelines, and the valve cover 4 is partially inserted into the other end of the first channel 1101 to press the corresponding valve seat 3. By arranging the valve cover 4, the valve seat 3 can be limited to make the valve ball 2 and the valve seat 3 always sealingly cooperate; in use, the connecting joint formed at one end of the first channel 1101 and the valve cover 4 are used to connect the ball valve into external pipelines to realize the purpose of controlling the opening and closing of the pipelines. In the embodiment, the valve cover 4 is threadedly connected to the valve body 1, which is simple in structure, easy to install and tightly connected.

[0049] For example, taking the connecting joint as the inlet and the valve cover 4 as the outlet, when the valve ball 2 is rotated to the communication position (the second channel 201 is communicated with the through hole 31), the fluid medium in the upstream pipeline can pass through the first channel 1101, the through hole 31 near the valve seat 3 of the connecting joint, the second channel 201, the through hole 31 near the valve seat 3 of the valve cover 4, and then flow to the downstream pipeline from the valve cover 4; when the valve ball 2 is rotated to the cut-off position (the second channel 201 is staggered with the through hole 31), the fluid medium in the external pipeline cannot pass through the ball valve. It can be understood that when the second channel 201 is opposite to the through hole 31, the flow of the fluid medium passing through the ball valve is the largest; when the second channel 201 is completely staggered with the through hole 31, the ball valve is in the closed state, that is, the valve ball 2 is in the cut-off position.

[0050] In order to adjust the position of the valve ball 2, as shown in Figure 2 and Figure 3 The ball valve further comprises an adjusting assembly 5, the valve body 1 comprises a valve main body 11 and a convex neck 12, a through hole 1102 is formed in the side wall of the valve main body 11, and the convex neck 12 is connected to the valve main body 11 and surrounds the through hole 1102; the adjusting assembly 5 comprises a valve sleeve 51 and an integrated valve rod 52, the valve sleeve 51 is sleeved on the convex neck 12, and the valve sleeve 51 has a first limiting portion 511 therein; the valve rod 52 is connected to the valve ball 2 after sequentially passing through the valve sleeve 51, the convex neck 12 and the through hole 1102, and rotating the valve rod 52 can drive the valve ball 2 to rotate to open or close the first channel 1101; the valve rod 52 is provided with a second limiting portion 521 matched with the first limiting portion 511 to limit the displacement of the valve rod 52 along the axis direction thereof. By arranging the valve rod 52 in an integrated structure, the situation that the ball valve cannot be normally opened or closed due to unsmooth torque transmission of the split valve rod can be avoided, so as to ensure the use safety of the ball valve; in addition, compared with the split valve rod, the valve rod 52 in the integrated structure only needs to be inserted into the valve main body 11 in alignment with the through hole 1102 to be connected to the valve ball 2, so the assembly process is simple, convenient and fast.

[0051] Optionally, the valve main body 11 and the convex neck 12 are in an integrated molding structure, so as to ensure the integrity of the whole valve body 1, and meanwhile, the leakage points on the valve body 1 can be reduced, thereby improving the use safety of the ball valve.

[0052] In order to improve the sealing performance of the ball valve, at least one sealing member 6 is arranged between the valve rod 52 and the convex neck 12 to ensure the sealing performance therebetween, so as to avoid the leakage of the fluid medium in the first channel 1101 from between the valve rod 52 and the convex neck 12.

[0053] In order to realize the connection between the valve stem 52 and the valve ball 2, in the embodiment, the valve stem 52 is provided with a plug-in end 522, and the valve ball 2 is provided with a first plug-in groove 202 matched with the plug-in end 522, so as to ensure that the valve ball 2 can rotate synchronously with the valve stem 52. Of course, in other embodiments, the plug-in end 522 can be arranged on the valve ball 2, and the first plug-in groove 202 can be arranged on the valve stem 52, and the above-mentioned effect can also be achieved.

[0054] Figure 4 A structural schematic diagram of the valve body 1 provided by the embodiment is shown. As shown in Figure 4 and shown in Figure 2 , Figure 3 , the side of the convex neck 12 away from the first channel 1101 is provided with two oppositely arranged limiting grooves 121, and the two ends of the second limiting part 521 are respectively limited in the two limiting grooves 121. When the operator rotates the valve stem 52, the valve ball 2 can be driven to rotate to switch between the communication position and the cutoff position. At the same time, the second limiting part 521 can rotate in the corresponding limiting groove 121, and when the second limiting part 521 abuts against one side groove wall of the corresponding limiting groove 121, the second channel 201 of the valve ball 2 is opposite to the through hole 31, that is, the fluid medium flow through the ball valve is maximum at this time; when the second limiting part 521 abuts against the other side groove wall of the corresponding limiting groove 121, the second channel 201 of the valve ball 2 is completely misaligned with the through hole 31, that is, the fluid medium flow through the ball valve is zero at this time. In the embodiment, the limiting groove 121 is an arc-shaped groove, and the central angle of each limiting groove 121 is 90°, that is, the rotation angle of the valve ball 2 from the communication position to the cutoff position is 90°.

[0055] Optionally, the size of the second limiting part 521 along the axis direction of the valve stem 52 is equal to the groove depth of the limiting groove 121. This design can avoid displacement of the valve stem 52 along the axis direction of itself, thereby causing the valve stem 52 to be disengaged from the valve ball 2 and affecting the position adjustment of the valve ball 2.

[0056] Figure 5 A structural schematic diagram of the valve stem 52 provided by the embodiment is shown. As shown in Figure 5 and shown in Figure 3 , in the embodiment, the second limiting part 521 is a limiting pin, and the valve stem 52 is provided with a first plug-in hole 520 penetrating along the radial direction thereof, and the limiting pin is plugged into the first plug-in hole 520. This design can facilitate the machining of the valve stem 52, and the limiting pin is a standard structural part commonly used in the field, which is convenient to obtain, can reduce the machining cost to a certain extent, and can improve the assembly efficiency.

[0057] Of course, in other embodiments, the valve stem 52 and the second limiting portion 521 can also be integrally formed. Specifically, a protrusion is provided on the side wall of the valve stem 52 along its radial direction, and this protrusion forms the aforementioned second limiting portion 521. This design can also achieve the above-mentioned effect. It should be explained that in this example, there are two protrusions, which are symmetrically arranged on both sides of the valve stem 52, and the two protrusions are respectively located in the two limiting grooves 121. That is to say, the "two ends of the second limiting portion 521" specifically refers to the two protrusions.

[0058] Continue as Figure 2 As shown, a stepped hole 5101 is provided inside the valve sleeve 51. The protruding neck 12 passes through the large-diameter section of the stepped hole 5101, and the step between the large-diameter section and the small-diameter section of the stepped hole 5101 forms the aforementioned first limiting part 511. That is to say, the stepped structure of the stepped hole 5101 abuts and cooperates with the second limiting part 521, thereby limiting the valve stem 52 along its own axis and ensuring the overall performance of the ball valve.

[0059] Figure 6 A schematic diagram of the handle 53 provided in this embodiment is shown. Figure 6 and combined Figure 2 As shown, the adjustment assembly 5 also includes a handle 53, which is connected to the end of the valve stem 52 facing away from the valve ball 2. By providing the handle 53, the operator can hold the handle 53 to rotate the valve stem 52, thereby improving the ease of operation. In this embodiment, the handle 53 is provided with a second insertion groove 531, and the end of the valve stem 52 facing away from the valve ball 2 is inserted into the second insertion groove 531, facilitating quick assembly and disassembly between the handle 53 and the valve stem 52. In this embodiment, the cross-sectional shape of the second insertion groove 531 is non-circular, and the cross-sectional shape of the end of the valve stem 52 is adapted to the second insertion groove 531 to ensure that the valve stem 52 can rotate synchronously with the handle 53.

[0060] Example 2

[0061] This embodiment provides a ball valve, the specific structure of which is roughly the same as that of the ball valve in Embodiment 1, the difference being that the structure of the regulating component 5 is different.

[0062] Figure 7 A cross-sectional view of the ball valve provided in this embodiment is shown. Figure 7As shown, in the embodiment, the two ends of the second limiting part 521 are sleeved with anti-abrasion sleeves 54 to avoid abrasion caused by long-time collision between the second limiting part 521 and the groove wall of the first limiting part 511 or the limiting groove 121, thereby prolonging the service life of the ball valve. Optionally, the anti-abrasion sleeves 54 are made of polytetrafluoroethylene (PTFE) material, which has good chemical stability and good anti-abrasion performance.

[0063] In the embodiment, the size of the second limiting part 521 along the axis direction of the valve rod 52 is equal to the sum of twice the thickness of the anti-abrasion sleeve 54 and the groove depth of the limiting groove 121. This design can further improve the limiting effect on the valve rod 52 to avoid displacement of the valve rod 52 along the axis direction thereof, thereby causing the valve rod 52 to be separated from the valve ball 2 and affecting the position adjustment of the valve ball 2.

[0064] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. A ball valve, characterized in that The utility model relates to a valve, which comprises: a valve body (1) including a valve main body (11) and a convex neck (12), the valve main body (11) has a first channel (1101) for fluid medium to pass through, and a through hole (1102) is formed in the side wall of the valve main body (11), and the convex neck (12) is connected to the valve main body (11) and surrounds the through hole (1102); a valve ball (2) rotatably arranged in the first channel (1101); an adjusting assembly (5) including a valve sleeve (51) and an integrated valve rod (52), the valve sleeve (51) is sleeved on the convex neck (12), and the valve sleeve (51) has a first limiting part (511) therein; the valve rod (52) is connected to the valve ball (2) after sequentially passing through the valve sleeve (51), the convex neck (12) and the through hole (1102), and rotating the valve rod (52) can drive the valve ball (2) to rotate to open or close the first channel (1101); the valve rod (52) is provided with a second limiting part (521) matched with the first limiting part (511) to limit the displacement of the valve rod (52) along the axis direction thereof.

2. The ball valve according to claim 1, characterized in that The second limiting part (521) is a limiting pin, the valve rod (52) is provided with a first plug hole (520) penetrating in the radial direction thereof, and the limiting pin is plugged into the first plug hole (520); or a convex part is convexly arranged on the side wall of the valve rod (52) in the radial direction thereof, and the convex part forms the second limiting part (521).

3. Ball valve according to claim 1 or 2, characterized in that The side of the convex neck (12) away from the first channel (1101) is provided with two oppositely arranged limiting grooves (121), and the two ends of the second limiting part (521) are respectively limited in the two limiting grooves (121).

4. The ball valve according to claim 3, characterized in that The size of the second limiting part (521) in the axis direction of the valve rod (52) is equal to the groove depth of the limiting groove (121).

5. The ball valve of claim 3, wherein Both ends of the second limiting part (521) are sleeved with wear-resistant sleeves (54).

6. The ball valve of claim 5, wherein, The size of the second limiting part (521) in the axis direction of the valve rod (52) is equal to twice the sum of the thickness of the wear-resistant sleeve (54) and the groove depth of the limiting groove (121).

7. The ball valve of claim 3, wherein The limiting groove (121) is an arc-shaped groove, and the central angle of the limiting groove (121) is 90°.

8. The ball valve according to claim 1 or 2, characterized in that The valve sleeve (51) is provided with a stepped hole (5101), the convex neck (12) is arranged in the large-diameter section of the stepped hole (5101), and the step between the large-diameter section and the small-diameter section of the stepped hole (5101) forms the first limiting part (511).

9. The ball valve according to claim 1 or 2, characterized in that The adjusting assembly (5) further includes a handle (53) connected to the end of the valve rod (52) away from the valve ball (2).

10. The ball valve according to claim 1 or 2, characterized in that The valve main body (11) and the convex neck (12) are integrally formed.

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