Labor-saving ceramic ball valve

Abstract

The utility model relates to the technical field of ball valves, in particular to a labor-saving ceramic ball valve which comprises a ball valve shell, an opening and closing ball body is arranged in the middle of the inner side of the ball valve shell, a labor-saving assembly is arranged at the top of the opening and closing ball body, and two supporting columns are fixedly connected to the top of the ball valve shell. The top ends of the two supporting columns are fixedly connected with a mounting plate, and the top of the mounting plate is provided with a pulley assembly. The pulley assembly comprises a rotating arm rotationally connected to the top of the labor-saving assembly, and one end of the rotating arm is rotationally connected with a movable frame. According to the improved ceramic ball valve, the pulley assembly drives the labor-saving assembly to rotate with small force, the opening and closing ball body can be opened by repeatedly pulling the pull rope, the ball valve can be opened with small force under the cooperation of the labor-saving assembly and the pulley assembly, the total rotating angle of the opening and closing ball body is dispersed into multiple times, the rotating angle of the rotating arm is small each time, and the opening and closing ball body can be conveniently opened. The device is suitable for being used in narrow space.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a ceramic ball valve with labor-saving operation. Background Technique

[0002] A ball valve is a valve whose opening and closing sphere is driven by a valve stem and rotates around the axis of the ball valve. It can also be used for the regulation and control of fluids. Among them, the hard-sealed V-type ball valve has a strong shearing force between its V-type ball core and the metal valve seat surfacing hard alloy, and is especially suitable for media containing fibers, tiny solid particles, etc. The ball valve can also be used to close any channel and connect the other two channels. Generally, this type of valve should be installed horizontally in the pipeline. When the ball valve is opened, it will be affected by the resistance of the internal fluid, and it is often necessary to lengthen the power arm through a sleeve rod to open it. However, in some narrow areas, it is not convenient to install a long sleeve rod. Therefore, we introduce a ceramic ball valve with labor-saving operation.

[0003] The existing technology has the following problems: Some of the existing ball valves are installed in narrow spaces, which are not convenient to carry or install sleeve rods, resulting in that the staff can only manually open the valve body, consuming a lot of physical strength. Content of the Utility Model

[0004] The purpose of the utility model is to provide a ceramic ball valve with labor-saving operation to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A ceramic ball valve with labor-saving operation, including a ball valve housing, a closing and opening sphere is arranged in the middle of the inner side of the ball valve housing, a labor-saving component is arranged at the top of the closing and opening sphere, two support columns are fixedly connected to the top of the ball valve housing, the tops of the two support columns are fixedly connected with a mounting plate, and a pulley component is arranged on the top of the mounting plate;

[0006] The pulley component includes a rotating arm rotatably connected to the top of the labor-saving component, one end of the rotating arm is rotatably connected with a movable frame, a movable pulley and a limiting plate are respectively arranged between the inner walls of the movable frame, a pulling rope is attached to the outside of the movable pulley, one end of the pulling rope is fixedly connected with a pull ring, and the other end of the pulling rope is connected to the side of the movable frame away from the rotating arm. The middle of the pulling rope is attached to the outer surface of a fixed pulley, the fixed pulley is rotatably connected to the outside of the top end of a fixed rod, and the bottom end of the fixed rod is welded to the top surface of the mounting plate.

[0007] Preferably, one side of the rotating arm is fixedly connected with a tension spring through a connecting ring, and the end of the tension spring away from the rotating arm is fixedly connected to the middle of the connecting ring on one side of a fixing plate.

[0008] Preferably, connecting shafts and torsion springs are respectively provided on the bottom surface of one end of the rotary arm away from the movable frame. The bottom end of the torsion spring is fixedly connected with a ratchet pawl. The ratchet pawl is slidably connected to the middle of the connecting shaft, and a limiting rib is arranged on the outer surface of the connecting shaft.

[0009] Preferably, the labor-saving assembly includes a first support shaft fixedly connected to the top of the opening and closing sphere. The top end of the first support shaft is fixedly connected with a first large gear, and a first small gear is meshed with one side of the first large gear.

[0010] Preferably, a second support shaft penetrates through the middle of the first small gear. The top end of the second support shaft is fixedly connected with a second large gear, and a second small gear is meshed with one side of the second large gear.

[0011] Preferably, a ratchet wheel is fixedly connected to the top surface of the second small gear. A third support shaft penetrates through the middle of the ratchet wheel. The bottom ends of the third support shaft and the second support shaft are both rotatably connected to the top surface of the mounting plate. The first support shaft sequentially penetrates through the mounting plate and the ball valve housing from top to bottom.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, the pulley assembly drives the labor-saving assembly to rotate with a small force. By repeatedly pulling the pull rope, the opening and closing sphere can be opened. With the cooperation of the labor-saving assembly and the pulley assembly, only a very small force is required to open the ball valve, and the total rotation angle of the opening and closing sphere is dispersed into multiple times, and the rotation angle of the rotary arm each time is very small, which is suitable for use in a narrow space. When it is necessary to close the ball valve, there is liquid on both sides of the opening and closing sphere at this time, and the pressures on both sides are the same. At this time, a relatively small force is required to close the opening and closing sphere. Slide the ratchet pawl upward along the connecting shaft to disengage the ratchet pawl from the ratchet wheel, and then the worker rotates the second small gear to drive the labor-saving assembly to rotate and finally drive the opening and closing sphere to close. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is the present utility model Figure 1 an enlarged structural schematic diagram of part A in;

[0016] Figure 3 is a front view sectional three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 4 is a right view three-dimensional structural schematic diagram of the labor-saving assembly of the present utility model;

[0018] Figure 5 is a partial rear view sectional three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 6For the present utility model Figure 5 is a schematic enlarged view of part B in it.

[0020] In the figure: 1, ball valve housing; 2, opening and closing sphere; 3, support column; 4, mounting plate; 5, labor-saving component; 501, first support shaft; 502, first large gear; 503, first small gear; 504, second support shaft; 505, second large gear; 506, second small gear; 507, ratchet; 508, third support shaft; 6, pulley assembly; 601, rotating arm; 602, movable frame; 603, movable pulley; 604, limit plate; 605, pulling rope; 606, pulling ring; 607, fixed pulley; 608, fixed rod; 609, pulling spring; 6010, fixing plate; 6011, torsion spring; 6012, connecting shaft; 6013, ratchet pawl. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 6 , the present utility model provides a technical solution: a ceramic ball valve with labor-saving operation, including a ball valve housing 1, an opening and closing sphere 2 is arranged in the middle of the inner side of the ball valve housing 1, a labor-saving component 5 is arranged on the top of the opening and closing sphere 2, two support columns 3 are fixedly connected to the top of the ball valve housing 1, the top ends of the two support columns 3 are fixedly connected to a mounting plate 4, and a pulley assembly 6 is arranged on the top of the mounting plate 4.

[0023] In this embodiment, as Figure 1 and Figure 2As shown in the figure, the pulley assembly 6 includes a rotating arm 601 rotatably connected to the top of the labor-saving assembly 5. One end of the rotating arm 601 is rotatably connected with a movable frame 602. Between the inner walls of the movable frame 602, a movable pulley 603 and a limiting plate 604 are respectively provided. A pulling rope 605 is attached to the outer side of the movable pulley 603. One end of the pulling rope 605 is fixedly connected with a pulling ring 606, and the other end of the pulling rope 605 is connected to the side of the movable frame 602 away from the rotating arm 601. The middle part of the pulling rope 605 is attached to the outer surface of a fixed pulley 607. The fixed pulley 607 is rotatably connected to the outer side of the top end of a fixed rod 608. The bottom end of the fixed rod 608 is welded to the top surface of the mounting plate 4. The pulling rope 605 bypasses from the side of the fixed pulley 607 away from the movable pulley 603 and passes through the gap between the limiting plate 604 and the movable pulley 603 again. The diameter of the pulling ring 606 is larger than the gap between the limiting plate 604 and the movable pulley 603. The rotating arm 601 is rotatably connected with the support shaft three 508. When it is necessary to open this ball valve, pulling the pulling ring 606 drives the pulling rope 605 to move. During the pulling process, the pulling rope 605 needs to be attached to the surface of the movable pulley 603. At this time, the resistance mainly comes from the support shaft three 508 and the pulling spring 609. This structure adopts one movable pulley 603 and one fixed pulley 607, which can save half of the force. Only half of the force of the support shaft three 508 and the pulling spring 609 is required to pull the support shaft three 508 to rotate, and cooperate with the labor-saving assembly 5 to easily open this ceramic ball valve. The diameter of the pulling ring 606 being larger than the gap between the limiting plate 604 and the movable pulley 603 can prevent the pulling ring 606 from disengaging from the movable frame 602, avoiding the need to manually pass the pulling rope 605 through the middle of the movable frame 602 again during operation.

[0024] In this embodiment, as Figure 1 shown, a pulling spring 609 is fixedly connected to one side of the rotating arm 601 through a connecting ring. The end of the pulling spring 609 away from the rotating arm 601 is fixedly connected to the middle of the connecting ring on one side of the fixing plate 6010; the elastic force of the pulling spring 609 is used to drive the rotating arm 601 to reset.

[0025] In this embodiment, as Figure 6As shown, at the bottom surface of one end of the rotating arm 601 away from the movable frame 602, a connecting shaft 6012 and a torsion spring 6011 are respectively provided. The bottom end of the torsion spring 6011 is fixedly connected with a pawl 6013. The pawl 6013 is slidably connected to the middle of the connecting shaft 6012, and a limiting rib is provided on the outer surface of the connecting shaft 6012. The connecting shaft 6012 enables the pawl 6013 to rotate, while the torsion spring 6011 can reset the pawl 6013. Through the cooperation of the pawl 6013 and the ratchet wheel 507, when the rotating arm 601 rotates counterclockwise in the top view, it can drive the second pinion 506 to rotate together. On the contrary, when the rotating arm 601 rotates clockwise, it cannot drive the second pinion 506 to rotate, that is, when the rotating arm 601 rotates clockwise under the resilience of the tension spring 609, this structure can realize the rotation of the second pinion 506 by repeatedly rotating the rotating arm 601 counterclockwise, and finally open the ball valve. The angle of each single rotation of the rotating arm 601 is very small, which is suitable for operation in a narrow space.

[0026] In this embodiment, as Figures 3 - 5As shown in the figure, the labor-saving component 5 includes a first support shaft 501 fixedly connected to the top of the opening and closing sphere 2. The top end of the first support shaft 501 is fixedly connected to a first large gear 502. A first small gear 503 is meshed with one side of the first large gear 502. A second support shaft 504 passes through the middle of the first small gear 503. The top end of the second support shaft 504 is fixedly connected to a second large gear 505. A second small gear 506 is meshed with one side of the second large gear 505. A ratchet 507 is fixedly connected to the top surface of the second small gear 506. A third support shaft 508 passes through the middle of the ratchet 507. The bottom ends of the third support shaft 508 and the second support shaft 504 are both rotatably connected to the top surface of the mounting plate 4. The first support shaft 501 passes through the mounting plate 4 and the ball valve housing 1 from top to bottom in sequence; in this structure, the resistance mainly comes from the opening and closing sphere 2 connected to the bottom end of the first support shaft 501. The structure of using a small gear to drive a large gear is adopted. When driving the large gear, the power comes from the tooth part of the large gear, and the resistance comes from the part of the large gear shaft. And the small gear is used as the driving part. Its resistance arm is the distance from the central axis of the small gear to the tooth of the small gear. This distance is less than the distance from the tooth part of the large gear to the central axis of the large gear. Therefore, when using the transmission method of a small gear driving a large gear, the power arm is greater than the resistance arm, which is a labor-saving structure. Thus, only a very small force is required to rotate the second small gear 506, and finally drive the first support shaft 501 to drive the opening and closing sphere 2 to open and close, opening or closing this ceramic ball valve. Cooperating with the pulley component 6 is more labor-saving. And this structure does not need to install external components such as a sleeve rod to increase the power arm, nor is it the same as some ball valves with a rotatable handle that can be telescoped. When extending the telescopic handle and rotating it to open the opening and closing sphere 2, a relatively large space is still required for the handle to rotate. The labor-saving component 5 and the pulley component 6 at the top of this ceramic ball valve are structurally compact and occupy very little space, not exceeding the area of the mounting plate 4. The mounting plate 4 has the same width as the ball valve housing 1. It can be said that as long as the ball valve can be installed, the pulley component 6 and the labor-saving component 5 can be used to open or close the opening and closing sphere 2.

[0027] The usage method and advantages of the present utility model: When this ceramic ball valve with labor-saving operation is in use, the working process is as follows:

[0028] When the opening and closing sphere 2 is in the closed state, the pressure difference on both sides in the pipeline is very large. At this time, a large force is required to open the opening and closing sphere 2. From the top-down perspective, pulling the pull rope 605 causes the rotating arm 601 to rotate counterclockwise. At this time, the cooperation between the pawl 6013 and the ratchet wheel 507 can drive the force-saving component 5 to rotate. Then, release the pull rope 605. Under the resilience of the tension spring 609, the rotating arm 601 rotates clockwise to reset. At this time, the pawl 6013 will not drive the ratchet wheel 507 to rotate, nor will it drive the force-saving component 5 to rotate. Repeatedly pulling the pull rope 605 in this way can open the opening and closing sphere 2. Moreover, with the cooperation of the force-saving component 5 and the pulley component 6, only a very small force is required to open the ball valve. When it is necessary to close the ball valve, at this time, there is liquid on both sides of the opening and closing sphere 2, and the pressures on both sides are the same. At this time, the force required to close the opening and closing sphere 2 is relatively small. Slide the pawl 6013 upward along the connecting shaft 6012 to disengage the pawl 6013 from the ratchet wheel 507. Then, the staff rotates the second pinion 506 to drive the force-saving component 5 to rotate, and finally drives the opening and closing sphere 2 to close.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Technical staff in this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A ceramic ball valve with labor-saving operation, comprising a ball valve housing (1), characterized in that: An opening and closing ball (2) is provided in the middle of the inner side of the ball valve housing (1), a labor-saving component (5) is provided on the top of the opening and closing ball (2), two support columns (3) are fixedly connected to the top of the ball valve housing (1), a mounting plate (4) is fixedly connected to the top ends of the two support columns (3), and a pulley component (6) is provided on the top of the mounting plate (4); The pulley assembly (6) comprises a rotating arm (601) rotatably connected to the top of the labor-saving assembly (5); one end of the rotating arm (601) is rotatably connected to a movable frame (602); a movable pulley (603) and a limit plate (604) are respectively arranged between the inner walls of the movable frame (602); a pull rope (605) is attached to the outer side of the movable pulley (603); one end of the pull rope (605) is fixedly connected to a pull ring (606); and the other end of the pull rope (605) is connected to a side of the movable frame (602) away from the rotating arm (601); the middle part of the pull rope (605) is attached to the outer surface of the fixed pulley (607); the fixed pulley (607) is rotatably connected to the outer side of the top end of a fixed rod (608); and the bottom end of the fixed rod (608) is welded to the top surface of the mounting plate (4).

2. The ceramic ball valve with labor-saving operation according to claim 1 is characterized in that: One side of the rotating arm (601) is fixedly connected to a tension spring (609) via a connecting ring, and one end of the tension spring (609) away from the rotating arm (601) is fixedly connected to the middle of the connecting ring on one side of the fixing plate (6010).

3. The ceramic ball valve with labor-saving operation according to claim 2 is characterized in that: A connecting shaft (6012) and a torsion spring (6011) are respectively provided on the bottom surface of one end of the rotating arm (601) away from the movable frame (602); a pawl (6013) is fixedly connected to the bottom end of the torsion spring (6011); the pawl (6013) is slidably connected to the middle part of the connecting shaft (6012); and a limiting convex strip is provided on the outer surface of the connecting shaft (6012).

4. The ceramic ball valve with labor-saving operation according to claim 1 is characterized in that: The labor-saving component (5) comprises a support shaft (501) fixedly connected to the top of the opening and closing sphere (2), a large gear (502) being fixedly connected to the top of the support shaft (501), and a small gear (503) being meshed with one side of the large gear (502).

5. The ceramic ball valve with labor-saving operation according to claim 4 is characterized in that: A support shaft 2 (504) passes through the middle of the small gear 1 (503), a large gear 2 (505) is fixedly connected to the top of the support shaft 2 (504), and a small gear 2 (506) is meshed with one side of the large gear 2 (505).

6. The ceramic ball valve with labor-saving operation according to claim 5 is characterized in that: The top surface of the pinion gear 2 (506) is fixedly connected to a ratchet (507), the middle of the ratchet (507) is penetrated by a support shaft 3 (508), the bottom ends of the support shaft 3 (508) and the support shaft 2 (504) are both rotatably connected to the top surface of the mounting plate (4), and the support shaft 1 (501) penetrates the mounting plate (4) and the ball valve housing (1) in sequence from top to bottom.

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