CN112728149A

CN112728149A - Ball valve

Info

Publication number: CN112728149A
Application number: CN202011515270.8A
Authority: CN
Inventors: 何松
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-04-30

Abstract

The invention discloses a ball valve, which comprises a valve body, a valve rod and a valve core, wherein the valve core is positioned in the valve body and matched with the valve rod; the valve body is internally provided with the buffer mechanism, the push plate on the buffer mechanism is respectively matched with the upper cam plate on the valve rod and the lower cam plate at the lower end of the valve core, so that the push plate is driven to move, and the plurality of buffer plates on the whole buffer component are driven to rotate around the connecting ring to be opened through the movement of the push plate, so that when the valve is closed, the water hammer effect is eliminated by playing a role of buffering water flow; meanwhile, the ball arranged at the bottom of the valve core can facilitate the rotation of the valve core.

Description

Ball valve

Technical Field

The invention relates to the technical field of valves, in particular to a ball valve.

Background

The ball valve is used as a pipeline sealing element and comprises a valve core, a valve body and a valve rod, wherein the valve core is driven to rotate in the valve body through the rotation of the valve rod to open and close a pipeline in the valve body, and the ball valve can be used for regulating and controlling fluid. The application of the ball valve is very extensive, however, when the ball valve is closed in actual use, because the water flow is suddenly closed, the cut-off water flow can impact the valve core, commonly called as 'water hammer effect', and further damage is caused to the valve core, and the service life of the valve is reduced.

Disclosure of Invention

The invention provides a ball valve aiming at the situation in the background technology, and the problem in the background technology is effectively solved by arranging a buffer plate to counteract the water hammer effect generated by water flow cut-off.

In order to solve the technical problem, the invention is solved by the following technical scheme: the utility model provides a ball valve, includes valve body, valve rod and case, the case is located inside the valve body with the valve rod cooperation, inside buffer gear that still installs of valve body, buffer gear includes buffering part and annular push pedal, the push pedal pass through fixed connection's guide arm respectively with the cooperation of the last cam plate that sets up on the valve rod and the lower cam plate that the case lower extreme set up under the rotation of valve rod, the push pedal can promote buffering part opens.

Preferably, the valve body is internally provided with a mounting groove, the valve core is positioned in the mounting groove, and two axial sides of the valve core are also matched with sealing gaskets.

Preferably, the valve body is internally provided with cam grooves at the upper end and the lower end of the mounting groove, the upper cam plate on the valve rod is positioned in the cam groove at the upper end of the mounting groove, and the lower cam plate at the lower end of the valve core is positioned in the cam groove at the lower end of the mounting groove.

Preferably, the upper end of the valve core is provided with a spline groove, the lower end of the valve core is provided with a sliding groove, one end of the valve rod is provided with a spline shaft, the spline shaft is matched with the spline groove, the lower end of the inside of the valve body is provided with a rolling way, balls are installed in the rolling way, and the valve core is matched with the balls through the sliding groove.

Preferably, the valve body is inside to be located the upper and lower end of mounting groove one side all still is equipped with push pedal groove and guide bar groove, the lower extreme still is equipped with the dead slot on the valve body, the dead slot respectively with push pedal groove and guide bar groove intercommunication, the push pedal is installed the push pedal inslot, the guide bar groove still with the cam groove intercommunication, the guide arm is installed the guide bar inslot and respectively with the upper cam plate with the cooperation of lower cam plate, still the cooperation has reset spring on the guide arm.

Preferably, the valve body is internally provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the sealing ring is respectively matched with the inner side wall and the outer side wall of the push plate.

Preferably, the valve body is internally provided with a limiting groove, the limiting groove is positioned on the side of the push plate groove, the buffer component is installed in the limiting groove and comprises a plurality of buffer plates and a connecting ring, the connecting ring is fixedly connected with the limiting groove, the buffer plates are rotatably connected with the connecting ring through end parts, and torsional springs are further installed between the buffer plates on the connecting ring.

Preferably, a handle is further mounted at one end of the valve rod and fixed with the valve rod through a nut.

The invention has the beneficial effects that:

the valve body is internally provided with the buffer mechanism, the push plate on the buffer mechanism is respectively matched with the upper cam plate on the valve rod and the lower cam plate at the lower end of the valve core, so that the push plate is driven to move, and the plurality of buffer plates on the whole buffer component are driven to rotate around the connecting ring to be opened through the movement of the push plate, so that when the valve is closed, the water hammer effect is eliminated by playing a role of buffering water flow; meanwhile, the ball arranged at the bottom of the valve core can facilitate the rotation of the valve core.

Drawings

Fig. 1 is an exploded schematic view of the present invention.

Fig. 2 is a front sectional view of the present invention.

FIG. 3 is a sectional view taken along the direction A of the present invention.

Fig. 4 is a schematic view of the internal structure of the valve body of the present invention.

FIG. 5 is a schematic view of the structure of the cushioning member of the present invention.

In the figure: the valve comprises a valve body 1, an empty groove 101, a mounting groove 102, a cam groove 103, a guide rod groove 104, a push plate groove 105, a sealing groove 106, a limiting groove 107, a raceway 108, a valve core 2, a spline groove 201, a lower cam plate 202, a valve rod 4, an upper cam plate 401, a spline shaft 402, a handle 403, a nut 404, a sealing ring 5, a ball 6, a push plate 7, a guide rod 701, a return spring 702, a connecting ring 801, a buffer plate 802, a torsion spring 803 and a sealing gasket 9.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any creative effort, are within the protection scope of the present invention.

Embodiment is as shown in fig. 1 to 5, a ball valve includes a valve body 1, a valve rod 4 and a valve core 2, the valve core 2 is located inside the valve body 1 and is matched with the valve rod 4, a buffering mechanism is further installed inside the valve body 1, the buffering mechanism includes a buffering component and an annular push plate 7, the push plate 7 is respectively matched with an upper cam plate 401 arranged on the valve rod 4 and a lower cam plate 202 arranged at the lower end of the valve core 2 through a guide rod 701 fixedly connected, and the push plate 7 can push the buffering component to open under the rotation of the valve rod 4.

The valve comprises a valve body 1 and a valve core 2, wherein the valve body 1 is internally provided with a mounting groove 102, the valve core 2 is positioned in the mounting groove 102, and two axial sides of the valve core 2 are also matched with sealing gaskets 9.

Cam grooves 103 are further formed in the valve body 1 and located at the upper end and the lower end of the mounting groove 102, the upper cam plate 401 on the valve rod 4 is located in the cam groove 103 at the upper end of the mounting groove 102, and the lower cam plate 202 arranged at the lower end of the valve core 2 is located in the cam groove 103 at the lower end of the mounting groove 102.

The upper end of the valve core 2 is provided with a spline groove 201, the lower end of the valve core is provided with a sliding groove, one end of the valve rod 4 is provided with a spline shaft 402, the spline shaft 402 is matched with the spline groove 201, the lower end of the interior of the valve body 1 is provided with a roller path 108, balls 6 are installed in the roller path 108, and the valve core 2 is matched with the balls 6 through the sliding groove.

Valve body 1 is inside to be located the upper and lower end on one side of mounting groove 102 all still is equipped with push pedal groove 105 and guide bar groove 104, the lower extreme still is equipped with dead slot 101 on valve body 1, dead slot 101 respectively with push pedal groove 105 and guide bar groove 104 intercommunication, push pedal 7 is installed in push pedal groove 105, guide bar groove 104 still with cam groove 103 intercommunication, the guide arm 701 is installed in the guide bar groove 104 and respectively with go up cam plate 401 with the cooperation of lower cam plate 202, still cooperate reset spring 702 on the guide arm 701.

The inside seal groove 106 that still is equipped with of valve body 1, install sealing washer 5 in the seal groove 106, sealing washer 5 respectively with push pedal 7 inside and outside lateral wall cooperation.

The inside spacing groove 107 that still is equipped with of valve body 1, spacing groove 107 is located push away board groove 105 side, buffering parts installs in the spacing groove 107, buffering parts includes a plurality of buffer boards 802 and go-between 801, go-between 801 with spacing groove 107 fixed connection, buffer board 802 through the tip with go-between 801 rotates to be connected, go-between 801 each still install torsional spring 803 between the buffer board 802.

A handle 403 is further installed at one end of the valve rod 4, and the handle 403 is fixed with the valve rod 4 through a nut 404.

The specific working process is as follows: when the ball valve is installed, one side provided with the buffering component is communicated with the main pipeline, when the ball valve is opened, as shown in fig. 2 and 3, the guide rod 701 on the push plate 7 is respectively contacted with the upper cam plate 401 on the valve rod 4 and the narrowest edge of the lower cam plate 202 at the lower end of the valve core 2, and at the moment, the buffering plates 802 on the buffering component are all in a state of being attached to the inner wall of the valve body 1.

When the ball valve needs to be closed, the handle 403 is rotated to further drive the valve rod 4 to rotate to drive the valve core 2 to rotate together, so that the ball valve is closed, in the rotating process of the valve rod 4, the upper cam plate 401 on the valve rod 4 can rotate along with the valve rod 4, meanwhile, the lower cam plate 202 arranged at the bottom of the valve core 2 can rotate together, when the widest sides of the upper cam plate 401 and the lower cam plate 202 are in contact with the guide rod 701, the ball valve is closed, at the moment, the whole push plate 7 continuously moves leftwards under the action of the upper cam plate 401 and the lower cam plate 202, further is in contact with a plurality of buffer plates 802 on the buffer component and drives the buffer plates 802 to rotate around the connecting ring 801 to be closed towards the center, meanwhile, the torsion spring 803 is compressed, at the moment, due to the closing of the buffer plates 802, when the ball valve is closed, most of sudden changes of water flow act on the buffer plates 802, so that the, the service life of the valve core 2 is prolonged, when the ball valve is opened again, the valve rod 4 is rotated, the push plate 7 is reset under the action of the reset spring 702 and the buffer component, and meanwhile, the buffer component is reset under the action of the reset elastic force of the torsion spring 803 and the pressure of water flow.

Claims

1. The utility model provides a ball valve, includes valve body (1), valve rod (4) and case (2), case (2) be located inside valve body (1) with valve rod (4) cooperation, its characterized in that: the valve is characterized in that a buffer mechanism is further mounted inside the valve body (1), the buffer mechanism comprises a buffer component and an annular push plate (7), the push plate (7) is respectively matched with an upper cam plate (401) arranged on the valve rod (4) and a lower cam plate (202) arranged at the lower end of the valve core (2) through a guide rod (701) fixedly connected, and the buffer component can be pushed to open by the push plate (7) under the rotation of the valve rod (4).

2. The ball valve according to claim 1, wherein: the valve is characterized in that a mounting groove (102) is formed in the valve body (1), the valve core (2) is located in the mounting groove (102), and sealing gaskets (9) are further matched on two axial sides of the valve core (2).

3. The ball valve of claim 2, wherein: the valve is characterized in that cam grooves (103) are further formed in the valve body (1) and located at the upper end and the lower end of the mounting groove (102), the upper cam plate (401) on the valve rod (4) is located in the cam grooves (103) at the upper end of the mounting groove (102), and the lower cam plate (202) arranged at the lower end of the valve core (2) is located in the cam grooves (103) at the lower end of the mounting groove (102).

4. The ball valve according to claim 1, wherein: the valve body is characterized in that a spline groove (201) is formed in the upper end of the valve core (2), a sliding groove is formed in the lower end of the valve core, a spline shaft (402) is arranged at one end of the valve rod (4), the spline shaft (402) is matched with the spline groove (201), a roller path (108) is formed in the lower end of the interior of the valve body (1), balls (6) are installed in the roller path (108), and the valve core (2) is matched with the balls (6) through the sliding groove.

5. The ball valve of claim 2, wherein: valve body (1) is inside to be located the last lower extreme of mounting groove (102) one side all still is equipped with push pedal groove (105) and guide bar groove (104), valve body (1) is gone up the lower extreme and still is equipped with dead slot (101), dead slot (101) respectively with push pedal groove (105) and guide bar groove (104) intercommunication, push pedal (7) are installed in push pedal groove (105), guide bar groove (104) still with cam groove (103) intercommunication, install guide arm (701) in guide bar groove (104) and respectively with go up cam plate (401) with lower cam plate (202) cooperation, it has reset spring (702) to still cooperate on guide arm (701).

6. The ball valve according to claim 1, wherein: the valve body (1) is inside still to be equipped with seal groove (106), install sealing washer (5) in seal groove (106), sealing washer (5) respectively with push pedal (7) inside and outside lateral wall cooperation.

7. The ball valve according to claim 1, wherein: valve body (1) inside spacing groove (107) that still is equipped with, spacing groove (107) are located push plate groove (105) side, the buffer unit is installed in spacing groove (107), the buffer unit includes a plurality of buffer boards (802) and go-between (801), go-between (801) with spacing groove (107) fixed connection, buffer board (802) through the tip with go-between (801) rotate and connect, go-between (801) go up each torsional spring (803) still are installed between buffer board (802).

8. The ball valve according to claim 1, wherein: and a handle (403) is further installed at one end of the valve rod (4), and the handle (403) is fixed with the valve rod (4) through a nut (404).