CN111853276A

CN111853276A - One-piece ball valve based on pressure balance

Info

Publication number: CN111853276A
Application number: CN202010836425.1A
Authority: CN
Inventors: 范宏
Original assignee: Zhejiang Wonston Valve Co ltd
Current assignee: Zhejiang Wonston Valve Co ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2020-10-30

Abstract

The invention discloses a one-piece ball valve based on pressure balance, which belongs to the field of ball valves and comprises a valve casing, wherein a valve clack is arranged in the valve casing, a handle is connected on the valve clack, a pair of sealing rings matched with the valve clack is arranged in the valve casing, the valve clack comprises a pair of half shells, guide rings are fixedly connected on the half shells, an inner shell is connected between the guide rings, a guide pipeline matched with the half shells is fixedly connected in the inner shell, a driving gear is fixedly connected on a power output end of a motor, one end of the driving gear is engaged and connected with a driven gear, a connecting rod is fixedly connected on the driven gear, the connecting rod is rotatably connected with the inner wall of the inner shell, when the water flow is not full, the guide channel in the valve clack can be locally deformed, so that the water flow exerts acting, thereby the upper and lower ends of the valve clack bear the impact force of water flow.

Description

One-piece ball valve based on pressure balance

Technical Field

The invention relates to the field of ball valves, in particular to a one-piece ball valve based on pressure balance.

Background

The opening and closing piece of the ball valve is driven by the valve rod and rotates around the axis of the ball valve. The hard seal V-shaped ball valve can also be used for regulating and controlling fluid, wherein a V-shaped ball core of the hard seal V-shaped ball valve and a metal valve seat of the build-up welding hard alloy have strong shearing force, and the hard seal V-shaped ball valve is particularly suitable for media containing fibers, tiny solid particles and the like. The multi-way ball valve can flexibly control the confluence, the diversion and the switching of the flow direction of the medium on the pipeline, and can close any channel to connect the other two channels. The ball valve is mainly used for cutting off, distributing and changing the flow direction of a medium in a pipeline, and can be closed tightly only by rotating 90 degrees and a small rotating moment. The ball valve is most suitable for being used as a switch and a stop valve.

The existing ball valve sealing ring is fixed and disposable, water can leak when the ball valve sealing ring is slightly worn, and the ball valve sealing ring is difficult to maintain and replace, so that the whole ball valve is scrapped; current ball valve when intraductal rivers are less, when rivers can't be full of the water conservancy diversion passageway in the opening and closing piece, rivers only can exert the effort to the latter half of opening and closing piece to make the stress concentration that the valve body received open and close the latter half of piece, thereby make the sealing washer the latter half of being connected with opening and closing piece receive opening and closing piece friction more, so for a long time, make sealing washer local wear serious easily, thereby make sealing washer local seal nature descend, influence the performance of ball valve.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a pressure balance-based one-piece ball valve, which can realize that when the water flow in a valve clack is not full, a flow guide channel in the valve clack can be locally deformed, so that the water flow exerts an acting force on the upper half part of a half shell, the upper end and the lower end of the valve clack bear the impact force of the water flow, the local abrasion of a sealing ring is prevented from being larger due to the fact that the sealing ring is partially stressed when the water flow in a pipe is not enough, the sealing performance of the sealing ring is effectively protected, and the sealing ring is prevented from being misplaced.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A one-piece ball valve based on pressure balance comprises a valve casing, a valve clack is installed in the valve casing, a handle is connected on the valve clack, a pair of sealing rings matched with the valve clack are installed in the valve casing, the valve clack comprises a pair of half shells, a fixedly connected with diversion ring is arranged on the half shells, an inner shell is connected between the diversion ring, an inner fixedly connected with diversion pipeline matched with the half shells of the inner shell comprises a pair of fixing rings fixedly connected with the half shells, a fixing pipe is connected between the fixing rings, the upper end of the fixing pipe is fixedly connected with a deformation hose, the fixing pipes and the deformation hose which are spliced between the fixing rings are sealed to form a fluid channel, a motor is fixedly connected to the top end of the inner shell, a driving gear is fixedly connected to the power output end of, one end of the driving gear is engaged with a driven gear, the driven gear is fixedly connected with a connecting rod, the connecting rod is rotatably connected with the inner wall of the inner shell, the inner wall of the inner shell is fixedly connected with a pair of slide rails, a movable frame matched with the deformation hose is connected between the pair of slide rails, the movable frame is fixedly connected with the deformation hose, the upper end of the movable frame is fixedly connected with a rack, the slide rails are provided with a first gear matched with the rack, the first gear is fixedly connected with a connecting shaft, the connecting shaft is fixedly connected with a driven wheel, the connecting rod is fixedly connected with a driving wheel matched with the driven wheel, and a driving belt is connected between the driven wheel and the driving wheel, so that when the water flow in the valve clack is not full, the flow guide channel in the valve clack can be locally deformed, and the water, thereby make the upper and lower both ends of valve clack bear the impact force of rivers, effectively prevent because of intraductal rivers is not enough the time, the sealing washer partial stress, the sealing washer local wear who leads to is great, effectively protects the sealing performance of sealing washer, prevents the sealing washer dislocation.

Furthermore, pressure sensors and flow sensors are installed at the upper end and the lower end of the liquid inlet of the half shell, and whether liquid entering the valve clack is full of a diversion channel in the valve clack is detected through the pressure sensors and the flow sensors.

Further, the deformation hose is the half hose that rubber materials made, fixed pipe is the nonrust steel pipe of rigidity, the deformation hose is close to the one end fixedly connected with sealing strip of fixed pipe, sealing strip and fixed pipe welding, deformation hose receive pressure tensile deformation constantly.

Further, install step motor on the valve casing, install the controller in the valve clack, step motor, pressure sensor and flow sensor all with controller electric connection.

Furthermore, the movable frame is located one-third department that warp the hose, and the movable frame sets up in the one-third that warp the hose, and when the deformation position that the department can make rivers strike the deformation hose, can make the impact force transmission of rivers to the upper half of sealing washer.

Furthermore, a plurality of segment rings are fixedly connected to the deformation hose, a 45-degree chamfer is formed in one end, located in the deformation hose, of each segment ring, water flow impact force is shared through the segment rings, the impact force of water flow is buffered by the deformation hose, and acting force applied to the sealing ring is reduced.

Furthermore, a metal sealing strip is connected between the pair of half shells, and the metal sealing strip is welded with the pair of half shells, so that the sealing performance and the structural stability of the pair of half shells after connection are improved.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme can realize when the rivers are not full in the valve clack, can make the water conservancy diversion passageway local deformation in the valve clack to make rivers apply the effort to the first half of half casing, thereby make the upper and lower both ends of valve clack bear the impact force of rivers, when effectively preventing because of intraductal rivers are not enough, sealing washer part atress, the sealing washer local wear that leads to is great, effectively protects the sealing performance of sealing washer, prevents the sealing washer dislocation.

(2) Pressure sensor and flow sensor are all installed at the upper and lower both ends of half casing inlet, whether the liquid that has through pressure sensor and flow sensor detection entering valve clack is full of with water conservancy diversion passageway in the valve clack, install step motor on the valve casing, install the controller in the valve clack, step motor, pressure sensor and flow sensor all with controller electric connection.

(3) Fixedly connected with a plurality of section rings on the flexible pipe warp, and the chamfer that has 45 is dug to the one end that the section ring lies in the flexible pipe that warp, shares rivers impact force through the section ring, makes the impact force of rivers cushioned by the flexible pipe that warp, reduces the effort that the sealing washer received.

(4) The deformation hose is the half hose that rubber materials made, fixed pipe is the nonrust steel pipe of rigidity, the one end fixedly connected with sealing strip that the deformation hose is close to fixed pipe, sealing strip and fixed union coupling, the deformation hose receives the tensile deformation constantly of pressure, the adjustable shelf is located the third department of deformation hose, the adjustable shelf setting is in the third of deformation hose, when the department can make the deformation position of rivers impact deformation hose, can make the impact force transmission of rivers to the first half of sealing washer.

Drawings

FIG. 1 is a perspective view of a valve flap of the present invention;

FIG. 2 is an exploded view of the valve flap of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a cross-sectional view of the valve flap of the present invention;

FIG. 5 is a schematic view of the structure at A in FIG. 4;

FIG. 6 is a cross-sectional view of the valve flap of the present invention.

The device comprises a valve shell 1, a valve clack 2, a half shell 201, a diversion ring 202, a sealing ring 3, an inner shell 4, a diversion pipeline 5, a fixed ring 501, a waveguide tube 502 segment 503, a flexible hose 503, a segment ring 504, a motor 6, a driving gear 7, a driven gear 8, a connecting rod 9, a movable frame 10, a rack 11, a first gear 12, a driven gear 13 and a driving wheel 14.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1: referring to fig. 1-4, a one-piece ball valve based on pressure balance comprises a valve housing 1, a valve flap 2 is installed in the valve housing 1, a handle is connected to the valve flap 2, a pair of sealing rings 3 matched with the valve flap 2 are installed in the valve housing 1, the valve flap 2 comprises a pair of half shells 201, a metal sealing strip is connected between the pair of half shells 201 and welded to the pair of half shells 201, so as to improve the sealing performance and structural stability after the pair of half shells 201 are connected, a diversion ring 202 is fixedly connected to the half shells 201, an inner shell 4 is connected between the pair of diversion rings 202, a diversion pipeline 5 matched with the half shell 201 is fixedly connected to the inner shell 4, a pressure sensor and a flow sensor are installed at the upper end and the lower end of a liquid inlet of the half shell 201, whether the diversion channel in the valve flap 2 is filled, install step motor on the valve casing 1, install the controller in the valve clack 2, step motor, motor 6, pressure sensor and flow sensor all with controller electric connection.

Referring to fig. 3-6, the diversion duct 5 includes a pair of fixing rings 501 fixedly connected to the housing half 201, a fixing pipe 502 is connected between the pair of fixing rings 501, a deformable hose 503 is fixedly connected to an upper end of the fixing pipe 502, the pair of fixing rings 501 are sealed by the fixing pipe 502 and the deformable hose 503 which are spliced together to form a fluid passage, the deformable hose 503 is a half hose made of rubber material, the fixing pipe 502 is a rigid stainless steel pipe, a sealing strip is fixedly connected to one end of the deformable hose 503 close to the fixing pipe 502, the sealing strip is welded to the fixing pipe 502, the deformable hose 503 is stretched and deformed when being subjected to pressure, a plurality of segment rings 504 are fixedly connected to the deformable hose 503, one end of the segment ring 504 located in the deformable hose 503 is cut with a 45-degree chamfer, the impact force of the water flow is shared by the segment rings 504, so that the impact force of the water flow is buffered by the deformed hose 503, and the acting force applied to the sealing ring is reduced.

Referring to fig. 4-6, a motor 6 is fixedly connected to the top end of the inner housing 4, the motor 6 is electrically connected to an external power source, a driving gear 7 is fixedly connected to a power output end of the motor 6, a driven gear 8 is engaged with one end of the driving gear 7, a connecting rod 9 is fixedly connected to the driven gear 8, the connecting rod 9 is rotatably connected to the inner wall of the inner housing 4, a pair of slide rails is fixedly connected to the inner wall of the inner housing 4, a movable frame 10 matched with the flexible pipe 503 is connected between the pair of slide rails, the movable frame 10 is located at one third of the flexible pipe 503, when the water impacts the deformation position of the flexible pipe 503, the impact force of the water is transmitted to the upper half of the sealing ring 3, the movable frame 10 is fixedly connected to the flexible pipe 503, a rack 11, install the first gear 12 with rack 11 assorted on the slide rail, fixedly connected with connecting axle on the first gear 12, fixedly connected with follows driving wheel 13 on the connecting axle, fixedly connected with follows driving wheel 14 with following driving wheel 13 assorted on the connecting rod 9, be connected with the drive belt between follow driving wheel 13 and the driving wheel 14, drive driving gear 7 through motor 6 and rotate, thereby make driven gear 8 drive driving wheel 14 and rotate, thereby make follow driving wheel 13 drive first gear 12 and rotate, it carries out the vertical direction displacement to make rack 11 drive adjustable shelf 10 follow the slide rail through first gear 12 rotation, with this realization press deformation hose 503, thereby make deformation hose 503 local deformation.

This scheme can realize when the rivers are not full in the valve clack, can make the water conservancy diversion passageway local deformation in the valve clack to make rivers apply the effort to the first half of half casing, thereby make the upper and lower both ends of valve clack bear the impact force of rivers, when effectively preventing because of intraductal rivers are not enough, sealing washer part atress, the sealing washer local wear that leads to is great, effectively protects the sealing performance of sealing washer, prevents the sealing washer dislocation.

When the water in the pipe is small, the pressure sensor at the lower side of the half shell 201 detects the pressure, and when the pressure sensor at the upper side of the half shell 201 does not detect the pressure, the controller controls the motor 6 to work, so that the driving gear 7 rotates, the driving rod 9 rotates when the driving gear 7 rotates, so that the driven wheel 13 drives the driving wheel 14 to rotate, so that the first gear 12 drives the movable frame 10 to move along the slide rail, so that the movable frame 10 presses the deformed hose 503 downwards, so that one end of the deformed hose 503 protrudes, and simultaneously the controller drives the stepping motor to work, so that the valve clack 2 integrally rotates until the pressure sensors at the upper and lower ends of the half shell 201 detect pressure signals, at this time, the diversion pipeline 5 is filled with the water flow, and when the water flow in the diversion pipeline 5, the water flow impacts the segment ring 504 and the deformed hose 503, so that the water flow applies, thereby make the upper and lower both ends of valve clack 2 bear the impact force of rivers, effectively prevent because of intraductal rivers is not enough the time, the sealing washer partial wear that leads to is great, effectively protects the sealing performance of sealing washer, prevents the sealing washer dislocation.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a one-piece ball valve based on pressure balance, includes valve casing (1), install valve clack (2) in valve casing (1), be connected with the handle on valve clack (2), install a pair of sealing washer (3) with valve clack (2) assorted in valve casing (1), its characterized in that: the valve clack (2) comprises a pair of half shells (201), fixedly connected with water conservancy diversion ring (202) on half shell (201), it is a pair of be connected with interior casing (4) between water conservancy diversion ring (202), the interior fixedly connected with of interior casing (4) and half shell (201) assorted water conservancy diversion pipeline (5), water conservancy diversion pipeline (5) include a pair of with half shell (201) fixed connection's solid fixed ring (501), it is a pair of gu be connected with between fixed ring (501) fixed pipe (502), the upper end fixedly connected with of solid fixed pipe (502) warp hose (503), it is a pair of gu seal through solid fixed pipe (502) and the deformation hose (503) of concatenation and form fluid passage between fixed ring (501), the top fixedly connected with motor (6) of interior casing (4), fixedly connected with driving gear (7) on the power take off of motor (6), one end of the driving gear (7) is meshed with a driven gear (8), the driven gear (8) is fixedly connected with a connecting rod (9), the connecting rod (9) is rotatably connected with the inner wall of the inner shell (4), the inner wall of the inner shell (4) is fixedly connected with a pair of slide rails, a movable frame (10) matched with the deformation hose (503) is connected between the pair of slide rails, the movable frame (10) is fixedly connected with the deformation hose (503), the upper end of the movable frame (10) is fixedly connected with a rack (11), a first gear (12) matched with the rack (11) is installed on the slide rails, a connecting shaft is fixedly connected onto the first gear (12), a driven wheel (13) is fixedly connected onto the connecting shaft, and a driving wheel (14) matched with the driven wheel (13) is fixedly connected onto the connecting rod (9), a transmission belt is connected between the driven wheel (13) and the transmission wheel (14).

2. The one-piece ball valve based on pressure balance as claimed in claim 1, wherein: and the upper end and the lower end of the liquid inlet of the half shell (201) are provided with a pressure sensor and a flow sensor.

3. The one-piece ball valve based on pressure balance as claimed in claim 1, wherein: the flexible pipe (503) is a half flexible pipe made of rubber materials, the fixed pipe (502) is a rigid stainless steel pipe, one end of the flexible pipe (503) close to the fixed pipe (502) is fixedly connected with a sealing strip, and the sealing strip is welded with the fixed pipe (502).

4. The one-piece ball valve based on pressure balance as claimed in claim 1, wherein: install step motor on valve casing (1), install the controller in valve clack (2), step motor, motor (6), pressure sensor and flow sensor all with controller electric connection.

5. The one-piece ball valve based on pressure balance as claimed in claim 1, wherein: the movable frame (10) is positioned at one third of the deformation hose (503).

6. The one-piece ball valve based on pressure balance as claimed in claim 1, wherein: the deformation hose (503) is fixedly connected with a plurality of segment rings (504), and one end of each segment ring (504) located in the deformation hose (503) is provided with a 45-degree chamfer.

7. A pressure balance based one-piece ball valve in accordance with claim 1 wherein: and a metal sealing strip is connected between the pair of half shells (201), and the metal sealing strip is welded with the pair of half shells (201).