Adjustable top-mounted floating ball valve

Abstract

The utility model discloses an adjustable top-mounted floating ball valve which comprises a valve body, a transverse flow channel and a longitudinal installation channel communicated with the transverse flow channel are formed in the valve body, a cover block is installed at the position of the longitudinal installation channel, a ball core for opening and closing the transverse flow channel is arranged at the position of the transverse flow channel, and a right valve seat installed at the position of the valve body is arranged at the right end of the ball core. A right sealing ring is installed on the left side end face of the right valve seat, and an adjustable valve seat assembly is arranged at the left end of the ball core. A valve rod driving the ball core to rotate is installed on the valve body, a supporting column is fixed to the bottom of the ball core, a concave hole is formed in the valve body, a cushion block is installed at the concave hole, the supporting column is supported at the cushion block, the diameter of the concave hole is larger than that of the supporting column, a penetrating hole is formed in the cover block, and the diameter of the penetrating hole is larger than that of the valve rod. The ball core installation efficiency is high, the pressure of the sealing ring is adjustable, the sealing ring can achieve the best sealing effect, the ball core can float, the sealing effect is better when the medium pressure is larger, and the ball core sealing device is worthy of application and popularization.

Description

Technical Field

[0001] The utility model relates to a valve, in particular to a ball valve, particularly to an adjustable top-mounted floating ball valve. Background Art

[0002] As the name implies, the valve core of a floating ball valve is floating. Under the action of the medium pressure, the ball can produce a certain displacement and press against the sealing ring of the outlet section to ensure the sealing of the outlet end. However, the current top-mounted floating ball valve has encountered many troubles during installation. One type of top-mounted floating ball valve is that during installation, the ball core needs to be placed vertically into the horizontal flow channel first, and then the ball core is adjusted to be horizontal so that the spherical surface of the ball core is pressed against the sealing ring (such as Chinese utility model patent CN204344984 U). This installation method is also very troublesome. Changing the ball core from vertical to horizontal requires several workers to operate at the same time, and requires collaborative installation, which has low installation efficiency. Another installation method of a top-mounted floating ball valve is that the ball core is installed from top to bottom and squeezes the valve seat to move (a compression spring is installed on the side end of the valve seat, and the valve seat is movable), so that the ball core is installed to the specified position (such as Chinese invention patent CN 102367879 A) This installation method is very likely to scratch the surface of the ball core, which will make the sealing of the ball core surface worse, and in severe cases will cause medium leakage. Summary of the invention

[0003] The utility model aims to solve the shortcomings of the above-mentioned prior art and provides an adjustable top-mounted floating ball valve with adjustable pressure and floating ball core, which meets the needs of convenient ball core installation and convenient adjustment of the left sealing ring to achieve the best pressure acting on the spherical surface of the ball core.

[0004] The utility model adopts a technical solution to solve the technical problem: the adjustable top-mounted floating ball valve comprises a valve body, a transverse flow channel and a longitudinal installation channel connected to the transverse flow channel are opened on the valve body, a cover block is fastened to the longitudinal installation channel by a fastener, a ball core for opening and closing the transverse flow channel is arranged at the transverse flow channel, a right valve seat installed at the valve body is arranged at the right end of the ball core, a right sealing ring is installed on the left end surface of the right valve seat, and an adjustable valve seat assembly is arranged at the left end of the ball core; the adjustable valve seat assembly comprises a left valve seat plugged into the valve body, a left sealing ring is installed on the right end surface of the left valve seat, a threaded channel hole opened on the valve body is arranged at the left end of the left valve seat, a pressure-sensitive adhesive is threadedly connected to the threaded channel hole, and a pressure-sensitive adhesive is threadedly connected to the pressure-sensitive adhesive. A block is fixed on the pressure block, and a hollow tube plugged into the valve body is fixed on the pressure block, and a sealing ring is installed on the outer contour of the hollow tube. A group of compression springs evenly distributed along the center of the left valve seat are installed between the pressure block and the left valve seat, and a locking piece for locking the pressure block to move is installed on the pressure block. An inlet pipe is fixed on the left end of the pressure block, and an outlet pipe connected with the transverse flow channel is fixed on the right end of the valve body; a valve stem for driving the ball core to rotate is installed on the valve body, a supporting column is fixed on the bottom of the ball core, and the bottom surface of the supporting column is spherical, a concave hole is opened on the valve body, a cushion block is installed at the concave hole, the support column is supported at the cushion block, the diameter of the concave hole is larger than the diameter of the support column, and a through hole is opened on the cover block, and the diameter of the through hole is larger than the diameter of the valve stem. The role of the longitudinal installation channel and cover block here is to facilitate the installation of the ball core from top to bottom; the role of the adjustable valve seat assembly here is to enable the ball core to be placed in the horizontal flow channel without adjusting the angle, and also enables the ball core to be installed in the correct position without squeezing the left valve seat, which makes the installation more labor-saving, and the pressure of the compression spring can be adjusted to make the pressure of the left sealing ring on the surface of the ball core achieve the best sealing state (the left sealing ring will not be too tight or too loose when pressed on the surface of the ball core); a support column is fixed to the bottom of the ball core here, a concave hole is opened on the valve body, a gasket is installed at the concave hole, the support column is supported on the gasket, the diameter of the concave hole is larger than the diameter of the support column, and a through hole is opened on the cover block. The diameter of the through hole is larger than the diameter of the valve stem, so that the ball core floats through the pressure of the medium, so that it can be pressed more tightly on the right sealing ring. The greater the medium pressure, the tighter the ball core is pressed on the right sealing ring, and the better the effect of avoiding leakage.

[0005] Further improvement, the locking member includes a circular ring block fixed on the pressure block, a group of flat-end set screws evenly arranged along the center of the circular ring block are threadedly connected to the circular ring block, and a group of hexagon socket set screws evenly arranged along the center of the circular ring block and fastened to the valve body are installed on the circular ring block. The function of the locking member here is to lock the pressure block of the adjusted position and prevent the pressure block from moving and affecting the compression force on the compression spring, so that the compression spring can achieve the best force acting on the left valve seat, so that the left sealing ring can achieve the best sealing effect on the ball core.

[0006] Further improvement, a first self-lubricating layer is provided on the outer contour surface of the left valve seat, and a second self-lubricating layer is provided on the outer contour surface of the hollow tube. The first and second self-lubricating layers here serve to make the pressure block and the left valve seat move with less resistance and more smoothly, thereby avoiding the occurrence of jamming; the first and second self-lubricating layers here are made of tin bronze material.

[0007] Further improvement, the top surface of the pad is provided with a third self-lubricating layer. The function of the third self-lubricating layer here is to reduce friction, make the ball core float more effortlessly, and avoid the occurrence of jamming; the third self-lubricating layer here is made of tin bronze material.

[0008] Further improvement, the top of the cover block is provided with a reducer matched with the valve stem, and the reducer is matched with a motor. The function of the reducer and the motor here is to open and close the ball valve with less effort.

[0009] The beneficial effects of the utility model are:

[0010] 1). The ball core can be installed from top to bottom, making the ball core installation efficient and effective;

[0011] 2). The sealing pressure of the ball valve can be adjusted to achieve the best sealing effect;

[0012] 3). Under the action of medium pressure, the ball core will float, thereby producing a stronger sealing effect and avoiding medium leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 A local enlarged view of area A;

[0015] Figure 3 This is a schematic diagram of the structure of the core area of ​​the utility model;

[0016] Figure 4 for Figure 2 B perspective view.

[0017] Explanation of the accompanying drawings: valve body 1, transverse flow channel 1-1, longitudinal installation channel 1-2, threaded channel hole 1-3, recessed hole 1-4, cover block 1a, ball core 2, right valve seat 3, right sealing ring 4, adjustable valve seat assembly 5, left valve seat 5-1, first self-lubricating layer 5-1a, left sealing ring 5-2, pressure block 5-3, hollow tube 5-3a, second self-lubricating layer 5a-3a, compression spring 5-4, locking piece 5-5, ring block 5-5a, flat end fastening screw 5-5b, hexagon socket fastening screw 5-5c, valve stem 6, gasket 7, flat end fastening screw 8, hexagon socket fastening screw 9, reducer 8, motor 9, inlet pipe 10, outlet pipe 11. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] Referring to the accompanying drawings: This adjustable top-mounted floating ball valve includes a valve body 1, a transverse flow channel 1-1 and a longitudinal installation channel 1-2 connected to the transverse flow channel 1-1 are opened on the valve body 1, a cover block 1a is fastened to the longitudinal installation channel 1-2 by a fastener, a ball core 2 for opening and closing the transverse flow channel 1-1 is provided at the transverse flow channel 1-1, a right valve seat 3 installed on the valve body 1 is provided at the right end of the ball core 2, a right sealing ring 4 is installed on the left end surface of the right valve seat 3, and an adjustable valve seat assembly 5 is provided at the left end of the ball core 2; the adjustable valve seat assembly 5 includes a left valve seat 5-1 plugged into the valve body 1, a left sealing ring 5-2 is installed on the right end surface of the left valve seat 5-1, a threaded channel hole 1-3 opened on the valve body 1 is provided at the left end of the left valve seat 5-1, a pressure block 5-3 is threadedly connected to the threaded channel hole 1-3, and a hollow tube 5-2 plugged into the valve body 1 is fixed to the pressure block 5-3. 3a, a sealing ring 5-3b is installed on the outer contour of the hollow tube 5-3a, a group of compression springs 5-4 evenly distributed along the center of the left valve seat 5-1 are installed between the pressure block 5-3 and the left valve seat 5-1, a locking piece 5-5 for locking the pressure block 5-3 to move is installed on the pressure block 5-3, an inlet pipe 10 is fixed to the left end of the pressure block 5-3, and an outlet pipe 11 connected with the transverse flow channel 1-1 is fixed to the right end of the valve body; a valve stem 6 for driving the ball core 2 to rotate is installed on the valve body 1, a support column 2-1 is fixed to the bottom of the ball core 2, and the bottom surface of the support column 2-1 is spherical, a concave hole 1-4 is opened on the valve body 1, a cushion block 7 is installed at the concave hole 1-4, the support column 2-1 is supported at the cushion block 7, the diameter of the concave hole 1-4 is larger than the diameter of the support column 2-1, a through hole 1a-1 is opened on the cover block 1a, and the diameter of the through hole 1a-1 is larger than the diameter of the valve stem 6.

[0020] The locking piece 5-5 includes a circular ring block 5-5a fixed on the pressure block 5-3, and a group of flat-end locking screws 5-5b evenly distributed along the center of the circular ring block 5-5a are threadedly connected to the circular ring block 5-5a, and a group of hexagon socket locking screws 5-5c evenly distributed along the center of the circular ring block 5-5a and fastened to the valve body 1 are installed on the circular ring block 5-5a.

[0021] A first self-lubricating layer 5-1a is provided on the outer contour surface of the left valve seat 5-1, and a second self-lubricating layer 5a-3a is provided on the outer contour surface of the hollow tube 5-3a.

[0022] The top surface of the pad 7 is provided with a third self-lubricating layer 7 - 1 .

[0023] A reducer 8 matched with the valve stem 6 is arranged at the top end of the cover block 1 a , and a motor 9 is matched with the reducer 8 .

[0024] The working principle of the utility model is as follows: when the ball core 2 needs to be installed, it is only necessary to remove the cover block 1a, and then remove the pressing block 5-3, so that the left valve seat 5-1 moves to the left, and then the ball core 2 is placed into the cavity of the valve body 1 by hoisting. At this time, the support column 2-1 on the ball core 2 is placed on the third self-lubricating layer 7-1, and then the pressing block 5-3 is twisted to push each compression spring 5-4, and the compression spring 5-4 then elastically compresses the left valve seat 5-1 through the elastic force, and compresses the left sealing ring 5-2 on the spherical surface of the ball core 2. On, constantly adjust the position of the pressure block 5-3 so that the left sealing ring 5-2 can achieve the best sealing effect. After adjusting the pressure block 5-3, tighten the hexagon socket fastening screws 5-5c, and then tighten the flat-end set screws 5-5b to lock and prevent the pressure block 5-3 from loosening. This split installation of the ball core 2 is not only more convenient and cost-effective for the processing of the valve seat area, but also has higher processing accuracy, and the assembly of the ball core 2 is more labor-saving and convenient, with higher assembly accuracy and better sealing, so that the valve can achieve the best sealing effect.

[0025] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An adjustable top-mounted floating ball valve, comprising a valve body (1), the valve body (1) being provided with a transverse flow channel (1-1) and a longitudinal installation channel (1-2) communicating with the transverse flow channel (1-1), a cover block (1a) being installed at the longitudinal installation channel (1-2), wherein: A ball core (2) for opening and closing the transverse flow channel (1-1) is provided at the transverse flow channel (1-1); a right valve seat (3) mounted on the valve body (1) is provided at the right end of the ball core (2); a right sealing ring (4) is mounted on the left end surface of the right valve seat (3); and an adjustable valve seat assembly (5) is provided at the left end of the ball core (2); The adjustable valve seat assembly (5) comprises a left valve seat (5-1) plugged into the valve body (1), a left sealing ring (5-2) being installed on the right end surface of the left valve seat (5-1), a threaded channel hole (1-3) being provided at the left end of the left valve seat (5-1) and being opened on the valve body (1), a pressing block (5-3) being threadedly connected to the threaded channel hole (1-3), a hollow tube (5-3a) plugged into the valve body (1) being fixed to the pressing block (5-3), a sealing ring (5-3b) being installed on the outer contour of the hollow tube (5-3a), a group of compression springs (5-4) being evenly distributed along the center of the left valve seat (5-1) being installed between the pressing block (5-3) and the left valve seat (5-1), and a locking member (5-5) for locking the pressing block (5-3) to move is installed on the pressing block (5-3); The valve body (1) is provided with a valve stem (6) for driving the ball core (2) to rotate; a support column (2-1) is fixed to the bottom of the ball core (2); a concave hole (1-4) is provided on the valve body (1); a cushion block (7) is provided at the concave hole (1-4); the support column (2-1) is supported on the cushion block (7); the diameter of the concave hole (1-4) is larger than the diameter of the support column (2-1); a through hole (1a-1) is provided on the cover block (1a); the diameter of the through hole (1a-1) is larger than the diameter of the valve stem (6).

2. The adjustable top-mounted floating ball valve according to claim 1 is characterized in that: The locking member (5-5) comprises a circular ring block (5-5a) fixed on the pressure block (5-3), a group of flat-end set screws (5-5b) evenly distributed along the center of the circular ring block (5-5a) being threadedly connected to the circular ring block (5-5a), and a group of hexagon socket set screws (5-5c) evenly distributed along the center of the circular ring block (5-5a) and fastened to the valve body (1) are installed on the circular ring block (5-5a).

3. The adjustable top-mounted floating ball valve according to claim 1 is characterized in that: A first self-lubricating layer (5-1a) is provided on the outer contour surface of the left valve seat (5-1), and a second self-lubricating layer (5a-3a) is provided on the outer contour surface of the hollow tube (5-3a).

4. The adjustable top-mounted floating ball valve according to claim 1 is characterized in that: The top surface of the cushion block (7) is provided with a third self-lubricating layer (7-1).

5. The adjustable top-mounted floating ball valve according to claim 1 is characterized in that: A reducer (8) cooperating with the valve stem (6) is provided at the top end of the cover block (1a), and a motor (9) is cooperating with the reducer (8).

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