Sealing ball valve

Abstract

The utility model discloses a sealing ball valve, and belongs to the field of ball valves. The sealing ball valve comprises a valve body, connecting pipes, a valve cover and a valve element, wherein the connecting pipes are fixedly arranged on the two symmetrical sides of the valve body and used for being connected with an external pipeline; the valve cover is fixedly installed at the top of the valve body; the valve element is arranged in the center of the interior of the valve body; the sealing ring is fixedly arranged on the side, close to the valve element, of the connecting pipe, the valve rod is fixedly arranged on the top of the valve element and rotationally connected with the inner wall of the valve cover, and through holes used for medium circulation are formed in the two symmetrical sides of the valve element. The sealing ball valve further comprises a containing pipe and a filter screen, the containing pipe is arranged at the bottom of the connecting pipe and communicated with the connecting pipe, and the filter screen is arranged in the connecting pipe, located in the containing pipe and used for filtering media. And a medium entering the valve body can be conveniently filtered, so that the reasonable protection on the valve core is conveniently realized.

Description

Technical Field

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

[0002] A ball valve is a kind of valve. Its main feature is that a sphere with a circular channel (or hole) serves as the opening and closing member. This sphere is driven by a valve stem and rotates around an axis perpendicular to the channel to achieve the functions of opening and closing. It is mainly used for cutting off and connecting the medium in the pipeline and changing the flow direction of the medium. It can also be used for the regulation and control of fluids. In particular, the hard-sealed V-type ball valve is suitable for media containing fibers, tiny solid particles, etc. It has small fluid resistance, a compact structure, convenient opening and closing, a long service life and is not easy to be blocked.

[0003] During the use of the existing sealed ball valve, when the valve core is in use and the medium is transmitted through the ball valve, since each medium contains a large amount of impurities, when the valve is closed, the impurity particles hit the valve core at high speed, which in turn causes wear on the opening and the surface of the valve core. Over time, it is easy to cause air leakage in the ball valve, which is not conducive to realizing the sealing function of the ball valve.

[0004] Therefore, the utility model provides a sealed ball valve to solve the above problems. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] The utility model provides a sealed ball valve, aiming to solve the problems in the background art that during the use of the existing sealed ball valve, when the valve core is in use and the medium is transmitted through the ball valve, since each medium contains a large amount of impurities, when the valve is closed, the impurity particles hit the valve core at high speed, which in turn causes wear on the opening and the surface of the valve core. Over time, it is easy to cause air leakage in the ball valve, which is not conducive to realizing the sealing function of the ball valve.

[0007] (II) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solution: A sealed ball valve, comprising a valve body, connecting pipes fixedly arranged on both symmetrical sides of the valve body for connecting external pipelines, a valve cover fixedly installed on the top of the valve body, a valve core arranged at the central position inside the valve body, a sealing ring fixedly arranged on one side of the connecting pipe close to the valve core, and a valve rod fixedly arranged on the top of the valve core and rotatably connected to the inner wall of the valve cover. Through holes for the flow of the medium are opened on both symmetrical sides of the valve core; by first connecting the connecting pipes on both sides of the valve body to the pipelines for transmitting the medium, at this time, by rotating the top valve rod to rotate inside the valve cover, the valve core is driven to rotate, so as to realize the opening and closing of the sealed ball valve. When the through hole position of the valve core rotates to communicate with the connecting pipe, the ball valve is in the open state, and the medium enters the connecting pipe along the transmission pipeline, then enters the through hole, passes through the valve core and flows into the other side, thus completing the transmission. When the through hole of the valve core is in a state of being aligned with the connecting pipe, the ball valve is in the closed state, and at this time, the internal medium cannot flow.

[0009] In order to achieve reasonable filtration; the sealed ball valve further comprises a receiving pipe arranged at the bottom position of the connecting pipe and communicating with the connecting pipe, and a filter screen arranged inside the connecting pipe and located in the receiving pipe for filtering the medium. The filter screen comprises an inclined notch opened at the top position of the filter screen and adapted to the diameter of the connecting pipe, and a conical bottom fixedly arranged at the bottom of the filter screen for aggregating impurities. The edge of the inclined notch is fixedly connected to the inner wall of the connecting pipe; during use, in order to avoid the valve core of the existing sealed ball valve during use, when the medium is transmitted through the ball valve, since each medium contains a large amount of impurities, when the valve is closed, the impurity particles impact the valve core at a high speed, thereby causing wear at the opening and surface of the valve core. In the long run, it is easy to cause air leakage of the ball valve, which is not conducive to realizing the sealing function of the ball valve. The medium entering the connecting pipe can be filtered by using the filter screen. Since the filter screen presents an inclined notch on the side away from the valve core, the impurities can be completely filtered through the filter screen and enter the bottom of the filter screen. Also, since the bottom of the filter screen is conical, the impurities can be aggregated at the bottom position for convenient unified treatment later.

[0010] Preferably, in order to clean the impurities at the bottom of the filter screen and avoid the phenomenon of blockage of the filter screen during long-term use; an opening and closing assembly for opening and closing the conical bottom is arranged at the bottom of the filter screen; the opening and closing of the conical bottom can be realized by using the opening and closing assembly.

[0011] Preferably, in order to achieve reasonable opening and closing; the opening and closing assembly comprises a closing plug slidably arranged at the bottom opening position of the conical bottom for closing the conical bottom; the conical bottom can be opened by opening the closing plug to realize the cleaning of the garbage aggregated at the conical bottom.

[0012] Preferably, in order to achieve reasonable grasping of the sealing plug; the opening and closing assembly further includes two rotating rods fixedly arranged at symmetrically two sides of the bottom of the closing plug for facilitating dragging the closing plug; the effect of opening the sealing plug can be achieved by rotating and dragging the rotating rods with both hands.

[0013] Preferably, in order to take out impurities from the receiving pipe; a closing cover plate for closing the receiving pipe and contacting the bottom of the rotating rod is slidably clamped at the bottom of the receiving pipe; it can be achieved by opening the closing cover plate, and the closing cover plate is made of rubber material to facilitate the sealing effect.

[0014] (III) Beneficial effects

[0015] By arranging a filter screen in the sealed ball valve, through the shape of the trapezoidal filter screen for tourism, it is convenient to filter the medium entering the valve body, and thus it is convenient to reasonably protect the valve core. Description of the drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a sealed ball valve;

[0017] Figure 2 It is a partial structural schematic diagram of a sealed ball valve;

[0018] Figure 3 It is a sectional structural schematic diagram of a sealed ball valve;

[0019] Figure 4 It is a structural schematic diagram of the filter screen of a sealed ball valve;

[0020] In the figure:

[0021] 1. Valve body; 11. Connecting pipe; 111. Receiving pipe; 12. Valve cover; 13. Sealing ring;

[0022] 2. Valve core; 21. Through hole;

[0023] 3. Valve stem;

[0024] 4. Filter screen;

[0025] 41. Inclined groove opening; 42. Conical bottom;

[0026] 43. Opening and closing assembly; 431. Closing plug; 432. Rotating rod; 44. Closing cover plate. Specific implementation manners

[0027] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] The present utility model provides a sealed ball valve. As Figures 1-4 shown, the sealed ball valve includes a valve body 1, connecting pipes 11 fixedly arranged on both symmetric sides of the valve body 1 for connecting external pipelines, a valve cover 12 fixedly installed on the top of the valve body 1, a valve core 2 arranged at the central position inside the valve body 1, a sealing ring 13 fixedly arranged on one side of the connecting pipe 11 close to the valve core 2, and a valve rod 3 fixedly arranged on the top of the valve core 2 and rotatably connected to the inner wall of the valve cover 12. Through holes 21 for the medium to flow through are provided on both symmetric sides of the valve core 2. The sealed ball valve further includes a receiving pipe 111 arranged at the bottom position of the connecting pipe 11 and communicating with the connecting pipe 11, and a filter screen 4 arranged inside the connecting pipe 11 and located in the receiving pipe 111 for filtering the medium. The filter screen 4 includes an inclined slot 41 opened at the top position of the filter screen 4 and adapted to the diameter of the connecting pipe 11, and a conical bottom 42 fixedly arranged at the bottom of the filter screen 4 for accumulating impurities. The edge of the inclined slot 41 is fixedly connected to the inner wall of the connecting pipe 11.

[0029] During use, first connect the connecting pipes 11 on both sides of the valve body 1 to the pipelines for transmitting the medium. At this time, rotate the top valve rod 3 to rotate it inside the valve cover 12, thereby driving the valve core 2 to rotate to realize the opening and closing of the sealed ball valve. When the through hole 21 of the valve core 2 rotates to communicate with the connecting pipe 11, the ball valve is in the open state, and the medium enters the connecting pipe 11 along the transmission pipeline, enters the through hole 21, passes through the valve core 2 and flows into the other side, thereby completing the transmission. When the through hole 21 of the valve core 2 is in a state perpendicular to the connecting pipe 11, the ball valve is in the closed state, and at this time, the internal medium cannot flow. During the use process, in order to avoid the valve core 2 of the existing sealed ball valve being damaged during use. When the medium is transmitted through the ball valve, since each medium contains a large amount of impurities, when the valve is closed, the impurity particles hit the valve core 2 at a high speed, thereby causing wear at the opening and the surface of the valve core 2. Over time, it is easy to cause air leakage in the ball valve, which is not conducive to realizing the sealing function of the ball valve. The medium entering the connecting pipe 11 can be filtered by using the filter screen 4. Since the filter screen 4 has an inclined slot 41 facing away from the valve core 2, the impurities can be completely filtered through the filter screen 4 and enter the bottom of the filter screen 4. Also, since the bottom of the filter screen 4 is conical, the impurities can be accumulated at the bottom position for convenient unified treatment later.

[0030] Specifically, an opening and closing assembly 43 for opening and closing the conical bottom 42 is provided at the bottom of the filter screen 4. In order to clean the impurities at the bottom of the filter screen 4 and avoid the phenomenon of blockage of the filter screen 4 during long-term use, the opening and closing of the conical bottom 42 can be achieved by using the opening and closing assembly 43.

[0031] Among them, in order to achieve reasonable opening and closing, the opening and closing assembly 43 includes a closing plug 431 slidably arranged at the opening position of the bottom of the conical bottom 42 for closing the conical bottom 42. The conical bottom 42 can be opened by opening the closing plug 431 to clean the garbage accumulated in the conical bottom 42.

[0032] Furthermore, the opening and closing assembly 43 further includes two rotating rods 432 fixedly arranged at the symmetric two-side positions at the bottom of the closing plug 431 for facilitating the dragging of the closing plug 431. In order to achieve reasonable taking of the sealing plug 431, the effect of opening the sealing plug 431 can be achieved by rotating and dragging the rotating rods 432 with both hands.

[0033] Still further, a closing cover plate 44 for closing the receiving pipe 111 and contacting the bottom of the rotating rod 432 is slidably clamped at the bottom of the receiving pipe 111. In order to take out the impurities from the receiving pipe 111, it can be achieved by opening the closing cover plate 44. The closing cover plate 44 is made of rubber material to facilitate the sealing effect.

[0034] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A sealed ball valve, comprising a valve body (1), connecting pipes (11) fixedly arranged on two symmetric sides of the valve body (1) for connecting external pipelines, a valve cover (12) fixedly installed on the top of the valve body (1), a valve core (2) arranged at the central position inside the valve body (1), a sealing ring (13) fixedly arranged on one side of the connecting pipe (11) close to the valve core (2), and a valve rod (3) fixedly arranged on the top of the valve core (2) and rotatably connected to the inner wall of the valve cover (12). Through holes (21) for the medium to flow through are arranged on two symmetric sides of the valve core (2). It is characterized in that: The sealed ball valve further comprises a receiving pipe (111) arranged at the bottom position of the connecting pipe (11) and communicated with the connecting pipe (11), and a filter screen (4) arranged inside the connecting pipe (11) and located in the receiving pipe (111) for filtering the medium. The filter screen (4) comprises an inclined notch (41) arranged at the top position of the filter screen (4) and adapted to the diameter of the connecting pipe (11), and a conical bottom (42) fixedly arranged at the bottom of the filter screen (4) for accumulating impurities. The edge of the inclined notch (41) is fixedly connected to the inner wall of the connecting pipe (11).

2. The sealed ball valve according to claim 1, wherein: An opening and closing assembly (43) for opening and closing the conical bottom (42) is arranged at the bottom of the filter screen (4).

3. The sealed ball valve according to claim 2, characterized in that: The opening and closing assembly (43) comprises a closing plug (431) slidably arranged at the bottom opening position of the conical bottom (42) for closing the conical bottom (42).

4. The sealed ball valve according to claim 3, wherein: The opening and closing assembly (43) further comprises two rotating rods (432) fixedly arranged at two symmetric side positions at the bottom of the closing plug (431) for facilitating the dragging of the closing plug (431).

5. The sealed ball valve according to claim 4, characterized in that: A closing cover plate (44) for closing the receiving pipe (111) and contacting the bottom of the rotating rod (432) is slidably clamped at the bottom of the receiving pipe (111).

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