Ball valve convenient to adjust

Abstract

The utility model belongs to the technical field of ball valves, and discloses a ball valve convenient to adjust. The ball valve comprises a ball valve body, the ball valve body comprises a valve body and a valve element, a rotating rod fixedly connected with the top of the valve element is arranged at the top of the valve body in a penetrating mode, a hand wheel is arranged at the top of the rotating rod, and a limiting assembly for fixing the rotating position of the hand wheel is arranged at the top of the valve body. A worker can control the flow of the ball valve by rotating the hand wheel and controlling the valve element to rotate in the valve body, after the worker adjusts the position of the valve element, the stability of the hand wheel can be guaranteed through the limiting assembly, the probability that the hand wheel drives the valve element to rotate under the collision of external force is reduced, and then the flow standard originally set by the worker is guaranteed; and the stability of the ball valve in the using process can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a conveniently adjustable ball valve. Background Art

[0002] A ball valve is a type of valve with a ball core inside and a water flow channel on the ball core. By rotating the ball core, the water flow channel can be connected or disconnected with the external pipeline, thereby achieving the effect of controlling the flow of water in and out.

[0003] A ball valve is disclosed in a Chinese utility model patent with publication number CN220102136U, including a valve body, a tube body and a rotating mechanism. The valve body includes a spherical cavity, a sealing ring, a valve cover, screws, nuts, a spherical valve disc and a support column. The spherical cavity is arranged on the bottom inner wall of the valve body, the spherical valve disc is arranged on the inner side wall of the spherical cavity, the support column is fixedly connected to the lower surface of the spherical valve disc, the support column extends to the inside of the spherical cavity, the support column is rotatably connected to the inner side wall of the spherical cavity, a channel is opened in the middle of the spherical valve disc, the channel runs through the spherical valve disc, the rotating mechanism includes a rotating rod and a rotating ring, and the bottom of the rotating rod is connected to the top of the spherical valve disc through a sealing plug.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: no limiting structure is provided at the rotating rod, so that the rotating rod can easily drive the spherical valve disc to rotate under the impact of external force, thereby changing the flow standard originally set by the staff, and the stability is not high, so it needs to be improved. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a ball valve which is convenient to adjust.

[0006] The above technical purpose of the utility model is achieved through the following technical scheme: a ball valve that is easy to adjust, including a ball valve body, the ball valve body includes a valve body and a valve core, a rotating rod fixedly connected to the top of the valve core is arranged through the top of the valve body, a handwheel is arranged on the top of the rotating rod, and a limit assembly for fixing the rotation position of the handwheel is arranged on the top of the valve body.

[0007] By adopting the above technical solution, the staff can control the flow of the ball valve by turning the handwheel to control the valve core to rotate inside the valve body. After the staff adjusts the position of the valve core, the stability of the handwheel can be ensured by the limit assembly, thereby reducing the probability of the handwheel driving the valve core to rotate under the impact of external force, thereby ensuring the flow standard originally set by the staff, which is conducive to improving the stability of the ball valve during use.

[0008] Furthermore, the limit assembly includes a screw arranged on the handwheel, an outer sleeve arranged on the top of the valve body, an annular plate body arranged on the upper end of the outer sleeve, an upper nut threadedly connected to the screw, and a lower nut threadedly connected to the screw, the annular plate body is penetrated by an arc groove for the screw to pass through and move around the axis of the rotating rod, and the upper nut and the lower nut are symmetrically arranged about the annular plate body.

[0009] By adopting the above technical solution, when the staff wants to open the ball valve, the staff first loosens the lower nut and the upper nut connected to the screw thread, and then turns the handwheel to drive the screw to rotate around the axis of the rotating rod in the arc groove. When the handwheel drives the valve core to rotate to a certain position in the valve body and reaches the flow standard desired by the staff, the staff tightens the upper nut and the lower nut to limit the screw, handwheel, rotating rod and valve core to ensure the stability of the ball valve during use.

[0010] Furthermore, a first gasket sleeved on the screw rod is arranged between the bottom of the upper nut and the top of the annular plate body, and a second gasket sleeved on the screw rod is arranged between the top of the lower nut and the bottom of the annular plate body.

[0011] By adopting the above technical solution, the first gasket can increase the friction between the bottom of the upper nut and the top of the annular plate body, and the second gasket can increase the friction between the top of the lower nut and the bottom of the annular plate body, which is beneficial to improving the stability between the screw and the annular plate body.

[0012] Furthermore, the outer sleeve is composed of a first sleeve and a second sleeve, and connecting plates are fixed on the outer walls of the first sleeve and the second sleeve that are far away from each other, and the connecting plates are threadedly connected to the top of the valve body through bolts; the annular plate body is composed of a first plate body and a second plate body, and the two ends of the first plate body are threadedly connected to the two ends of the second plate body through bolts and nuts, and the arc groove is located on the first plate body.

[0013] By adopting the above technical solution, the bolt passes through the connecting plate and cooperates with the gap therewith to be threadedly connected with the top of the valve body, so that the inner walls of the first sleeve and the second sleeve are both fitted with the outer wall of the rotating rod, and the two ends of the first plate body are threadedly connected with the two ends of the second plate body by bolts and nuts and are sleeved on the outer wall of the rotating rod. By designing the outer sleeve and the annular plate body as a split body, it is convenient for the staff to install the outer sleeve and the annular plate body on the rotating rod of the ball valve.

[0014] Furthermore, an indication component is arranged on the top of the handwheel, and the indication component includes an open indication key, a close indication key and a maximum flow indication bar arranged on the top of the handwheel.

[0015] By adopting the above technical solution, the staff can quickly determine the direction of opening or closing through the indicator key, and use the maximum flow indicator bar to control the rotation angle of the valve core between the valve bodies, which is beneficial for the staff to control the flow change.

[0016] Furthermore, the screw rod is arranged through the hand wheel and is in clearance fit with the hand wheel, and a limiting block is fixed at the upper end of the screw rod.

[0017] By adopting the above technical solution, the diameter of the circumscribed circle of the limit block is larger than the outer diameter of the screw, which is beneficial to improving the stability of the screw on the handwheel.

[0018] Furthermore, the upper end of the screw is threadedly connected to the bottom of the handwheel.

[0019] By adopting the above technical solution, it is convenient for workers to detachably connect the screw rod and the hand wheel.

[0020] In summary, the utility model has the following beneficial effects:

[0021] 1. In this application, the staff can control the flow of the ball valve by turning the hand wheel to control the valve core to rotate inside the valve body. After the staff adjusts the position of the valve core, the stability of the hand wheel can be ensured by the limit assembly, which reduces the probability of the hand wheel driving the valve core to rotate under the collision of external force, thereby ensuring the flow standard originally set by the staff, which is conducive to improving the stability of the ball valve during use;

[0022] 2. In this application, when the staff wants to open the ball valve, the staff first loosens the lower nut and the upper nut connected to the screw thread, and then turns the hand wheel to drive the screw to rotate around the axis of the rotating rod in the arc groove. When the hand wheel drives the valve core to rotate to a certain position in the valve body and reaches the flow standard desired by the staff, the staff tightens the upper nut and the lower nut to limit the screw, hand wheel, rotating rod and valve core to ensure the stability of the ball valve during use;

[0023] 3. In this application, the staff can quickly determine the direction of opening or closing through the indicator key, and use the maximum flow indicator bar to control the rotation angle of the valve core between the valve bodies, which is helpful for the staff to control the flow changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0025] Figure 2 It is a structural schematic diagram used to highlight the position relationship between the valve body and the valve core when the ball valve is closed in Example 1 of the utility model;

[0026] Figure 3It is a structural schematic diagram for highlighting the position relationship between the valve body and the valve core when the ball valve is opened in Embodiment 1 of the present utility model;

[0027] Figure 4 This is a schematic diagram of the exploded structure of the utility model embodiment 1 for highlighting the limiter assembly;

[0028] Figure 5 This is a schematic diagram of Embodiment 2 of the present utility model for highlighting the annular plate body and its connection structure;

[0029] Figure 6 It is a schematic diagram of the exploded structure of Example 2 of the utility model for highlighting the limit assembly.

[0030] In the figure: 1. ball valve body; 11. valve body; 12. valve core; 2. rotating rod; 3. hand wheel; 4. limit assembly; 41. screw; 411. limit block; 42. outer sleeve; 421. first sleeve; 422. second sleeve; 423. connecting piece; 43. annular plate; 431. first plate; 4311. arc groove; 432. second plate; 44. upper nut; 441. first gasket; 45. lower nut; 451. second gasket; 5. indication assembly; 51. open indication key; 52. close indication key; 53. maximum flow indicator bar. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0032] Example 1

[0033] like Figure 1-4 As shown, an embodiment of the present application discloses a ball valve that is easily adjustable, including a ball valve body 1, a rotating rod 2, a hand wheel 3, a limit assembly 4 and an indication assembly 5.

[0034] The ball valve body 1 is arranged horizontally, and comprises a valve body 11 and a valve core 12 .

[0035] The rotating rod 2 is arranged through the top of the valve body 11 and is fixedly connected to the top of the valve core 12 , and the hand wheel 3 is fixed to the top of the rotating rod 2 .

[0036] The limit assembly 4 is arranged at the top of the valve body 11, and is used to fix the rotation position of the handwheel 3. The limit assembly 4 includes a screw 41, an outer sleeve 42, an annular plate 43, an upper nut 44 and a lower nut 45. The screw 41 is arranged on the handwheel 3, and the screw 41 is arranged through the handwheel 3 and is clearance-matched with the handwheel 3. A limit block 411 is fixed on the upper end of the screw 41. The diameter of the circumscribed circle of the limit block 411 is larger than the outer diameter of the screw 41, which is conducive to improving the stability of the screw 41 on the handwheel 3. The outer sleeve 42 is arranged at the top of the valve body 11, and the annular plate 43 is arranged at the upper end of the outer sleeve 42. The annular plate 43 is penetrated by an arc groove 4311 for the screw 41 to pass through and move around the axis of the rotating rod 2. The upper nut 44 and the lower nut 45 are both sleeved on the screw 41 and threadedly connected to the screw 41. The upper nut 44 and the lower nut 45 are symmetrically arranged on the upper and lower sides of the annular plate 43. In this embodiment, when the staff wants to open the ball valve, the staff first loosens the lower nut 45 and the upper nut 44 that are threadedly connected to the screw 41, and then turns the handwheel 3 to drive the screw 41 to rotate around the axis of the rotating rod 2 in the arc groove 4311. When the handwheel 3 drives the valve core 12 to rotate to a certain position in the valve body 11 and reaches the flow standard desired by the staff, the staff tightens the upper nut 44 and the lower nut 45, thereby limiting the screw 41, the handwheel 3, the rotating rod 2 and the valve core 12 to ensure the stability of the ball valve during use.

[0037] The indicator assembly 5 is arranged on the top of the hand wheel 3, and the indicator assembly 5 includes an opening indicator key 51, a closing indicator key 52, and a maximum flow indicator bar 53. The opening indicator key 51, the closing indicator key 52, and the maximum flow indicator bar 53 are all arranged on the top of the hand wheel 3. In this embodiment, the staff can quickly determine the direction of opening or closing through the indicator keys, and cooperate with the maximum flow indicator bar 53 to control the rotation angle of the valve core 12 between the valve body 11, which is beneficial for the staff to control the flow change. Specifically: when the length direction of the maximum flow indicator bar 53 is parallel to the axial direction of the valve body 11 (such as Figure 3 ), the flow rate of the valve body 11 is the largest, and when the length direction of the maximum flow indicator bar 53 is perpendicular to the axial direction of the valve body 11 (such as Figure 2 ), the valve body 11 is completely closed.

[0038] In order to improve the stability between the screw rod 41 and the annular plate body 43, a first gasket 441 is provided between the bottom of the upper nut 44 and the top of the annular plate body 43 and is sleeved on the screw rod 41, and a second gasket 451 is provided between the top of the lower nut 45 and the bottom of the annular plate body 43. The first gasket 441 can increase the friction between the bottom of the upper nut 44 and the top of the annular plate body 43, and the second gasket 451 can increase the friction between the top of the lower nut 45 and the bottom of the annular plate body 43, which is beneficial to improve the stability between the screw rod 41 and the annular plate body 43.

[0039] In order to facilitate the staff to install the outer sleeve 42 and the annular plate body 43 on the rotating rod 2 of the ball valve, the outer sleeve 42 is composed of a first sleeve 421 and a second sleeve 422. The outer walls of the first sleeve 421 and the second sleeve 422 that are away from each other are fixed with connecting pieces 423, and the connecting pieces 423 are threadedly connected to the top of the valve body 11 through bolts (bolts are not shown in the figure); the annular plate body 43 is composed of a first plate body 431 and a second plate body 432. The two ends of the first plate body 431 and the two ends of the second plate body 432 are connected by bolts and nuts (bolts and nuts are both used in the prior art to connect the two The arc groove 4311 is located on the first plate body 431, and the bolt passes through the connecting piece 423 and cooperates with the clearance and is threadedly connected to the top of the valve body 11, so that the inner walls of the first sleeve 421 and the second sleeve 422 are both in contact with the outer wall of the rotating rod 2, and the two ends of the first plate body 431 and the two ends of the second plate body 432 are threadedly connected by bolts and nuts and are sleeved on the outer wall of the rotating rod 2. By designing the outer sleeve 42 and the annular plate body 43 as a split type, it is convenient for the staff to install the outer sleeve 42 and the annular plate body 43 on the rotating rod 2 of the ball valve.

[0040] The use principle of a conveniently adjustable ball valve in the present embodiment is as follows: when the staff wants to open the ball valve, the staff first loosens the lower nut 45 and the upper nut 44 threadedly connected to the screw rod 41, and then turns the hand wheel 3 to drive the screw rod 41 to rotate around the axis of the rotating rod 2 in the arc groove 4311. When the hand wheel 3 drives the valve core 12 to rotate to a certain position in the valve body 11 and reaches the flow standard desired by the staff, the staff tightens the upper nut 44 and the lower nut 45, thereby limiting the screw rod 41, the hand wheel 3, the rotating rod 2 and the valve core 12 to ensure the stability of the ball valve during use. The direction of opening or closing can be quickly determined through the indicator key, and the maximum flow indicator bar 53 can be used to control the rotation angle of the valve core 12 between the valve body 11, which is beneficial for the staff to control the flow change.

[0041] Example 2

[0042] like Figure 5-6 As shown, the difference between this embodiment and embodiment 1 is that the upper end of the screw rod 41 does not penetrate the hand wheel 3, and the upper end of the screw rod 41 is threadedly connected to the bottom of the hand wheel 3, so that the staff can detachably connect the screw rod 41 to the hand wheel 3.

[0043] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A ball valve that is easy to adjust, comprising a ball valve body (1), wherein the ball valve body (1) comprises a valve body (11) and a valve core (12), wherein a rotating rod (2) is provided through the top of the valve body (11) and is fixedly connected to the top of the valve core (12), wherein: A hand wheel (3) is arranged at the top of the rotating rod (2), and a limit assembly (4) for fixing the rotation position of the hand wheel (3) is arranged at the top of the valve body (11).

2. A conveniently adjustable ball valve according to claim 1, characterized in that: The limit assembly (4) comprises a screw (41) arranged on the hand wheel (3), an outer sleeve (42) arranged on the top of the valve body (11), an annular plate (43) arranged on the upper end of the outer sleeve (42), an upper nut (44) threadedly connected to the screw (41), and a lower nut (45) threadedly connected to the screw (41), the annular plate (43) being provided with an arc groove (4311) for the screw (41) to pass through and move around the axis of the rotating rod (2), and the upper nut (44) and the lower nut (45) are symmetrically arranged with respect to the annular plate (43).

3. A conveniently adjustable ball valve according to claim 2, characterized in that: A first gasket (441) sleeved on the screw rod (41) is arranged between the bottom of the upper nut (44) and the top of the annular plate (43), and a second gasket (451) sleeved on the screw rod (41) is arranged between the top of the lower nut (45) and the bottom of the annular plate (43).

4. The conveniently adjustable ball valve according to claim 3 is characterized in that: The outer sleeve (42) is composed of a first sleeve (421) and a second sleeve (422), and connecting plates (423) are fixed on the outer walls of the first sleeve (421) and the second sleeve (422) that are away from each other, and the connecting plates (423) are threadedly connected to the top of the valve body (11) through bolts; the annular plate body (43) is composed of a first plate body (431) and a second plate body (432), and the two ends of the first plate body (431) are threadedly connected to the two ends of the second plate body (432) through bolts and nuts, and the arc groove (4311) is located on the first plate body (431).

5. The conveniently adjustable ball valve according to claim 4 is characterized in that: An indication component (5) is arranged on the top of the hand wheel (3), and the indication component (5) comprises an opening indication key (51), a closing indication key (52) and a maximum flow indication bar (53) arranged on the top of the hand wheel (3).

6. The conveniently adjustable ball valve according to claim 5 is characterized in that: The screw rod (41) is disposed through the hand wheel (3) and is clearance-matched with the hand wheel (3). A limiting block (411) is fixed at the upper end of the screw rod (41).

7. The conveniently adjustable ball valve according to claim 5 is characterized in that: The upper end of the screw rod (41) is threadedly connected to the bottom of the hand wheel (3).

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