CN211501684U - Butterfly valve with long service life - Google Patents

Abstract

The utility model discloses a long service life's butterfly valve, include the disk seat and install the butterfly plate in the disk seat, the driver's room is installed to the upside of disk seat, the middle part of butterfly plate is run through to insert and is equipped with the valve shaft that extends in the driver's room, the side of driver's room is run through to insert and is equipped with the bull stick, the bull stick stretches out the outer one end of driver's chamber and installs the carousel, the outer movable sleeve of butterfly plate is equipped with rubber seal, the interior longitudinal symmetry of disk seat is provided with two well cavitys, two install the moving mechanism that is connected with both sides about the rubber seal respectively in the cavity. The utility model discloses a to butterfly plate outer rubber seal's separately action can reduce rubber seal's wearing and tearing and loss in the at utmost, improve rubber seal's life, need not frequently change, also can avoid to a certain extent because the butterfly valve sealing performance that rubber seal's wearing and tearing caused descends and leads to the excessive condition of fluid.

Description

Butterfly valve with long service life

Technical Field

The utility model relates to a butterfly valve technical field especially relates to a long service life's butterfly valve.

Background

The butterfly valve is a valve which uses a disc type opening and closing piece to rotate back and forth by about 90 degrees to open, close or adjust the medium flow. The butterfly valve has the advantages of simple structure, small volume, light weight, less material consumption, small installation size, small driving moment, simple and convenient operation and rapidness, and simultaneously has good flow regulation function and sealing closing characteristic, thereby being one of the fastest valve varieties developed in the last ten years. Butterfly valves are widely used. The variety and number of uses thereof are still continuously expanding and are developing toward high temperature, high pressure, large caliber, high sealing property, long life, excellent regulation property, and one-valve multi-function. The reliability and other performance indexes of the composite material reach higher levels.

The rubber sealing ring can frequently rub with the valve seat when the butterfly valve is opened and closed, so that the rubber sealing ring is easily abraded, the service life of the rubber sealing ring is shortened, the rubber sealing ring needs to be frequently replaced, and the abraded rubber sealing ring can cause the reduction of the sealing performance of the butterfly valve to cause the overflow of fluid.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to solve the shortcoming that exists among the prior art, if: the rubber sealing ring can frequently rub with the valve seat when the butterfly valve is opened and closed, so that the rubber sealing ring is extremely easy to wear, the service life of the rubber sealing ring is shortened, frequent replacement is needed, the worn rubber sealing ring can cause the reduction of the sealing performance of the butterfly valve to cause the overflow of fluid, and the butterfly valve is long in service life.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a long service life's butterfly valve, includes the disk seat and installs the butterfly plate in the disk seat, the driver's room is installed to the upside of disk seat, the middle part of butterfly plate is run through to insert and is equipped with the valve shaft that extends in the driver's room, the side of driver's room is run through to insert and is equipped with the bull stick, the bull stick stretches out the outer one end of driver's chamber and installs the carousel, the outer movable sleeve of butterfly plate is equipped with rubber seal, the interior longitudinal symmetry of disk seat is provided with two well cavitys, two install the moving mechanism that is connected with both sides about the rubber.

Preferably, the outer edge of the upper side of the rubber sealing ring is provided with a notch for the movement of the valve shaft.

Preferably, the moving mechanism includes the pull rod of fixed connection in rubber seal lateral wall outer fringe, the fixed cover of tip of pull rod has connect the lasso, set up the bar opening that is linked together with well cavity on the inside wall of disk seat, slide in the bar opening and insert the connecting rod, the connecting rod stretches out the lateral wall rigid coupling of the outer one end of disk seat and lasso, install servo motor in the cavity intracavity, servo motor's output has the lead screw through the shaft coupling rigid coupling, the lead screw cover is installed to the lead screw external screw thread, the lateral wall fixed connection of the one end of lasso and lead screw cover is kept away from to the connecting rod.

Preferably, a liquid sealing ring sleeved outside the screw rod is fixedly installed in the hollow cavity.

Preferably, the bearing that supplies the lead screw to keep away from servo motor's tip rotation to insert and send is installed on the inside wall of well cavity, the outside wall of lead screw tip adopts interference fit's mode fixed connection together with the inner circle of bearing.

Preferably, the screw rod sleeve, the connecting rod, the pull rod and the ferrule are all stainless steel parts.

The utility model has the advantages that: before the butterfly plate is opened, the two servo motors are started to drive the two screw rods to rotate, so that the two screw rod sleeves drive the two pull rods to pull the rubber sealing ring, the rubber sealing ring is separated from the butterfly plate, and then the butterfly plate is rotated to open the butterfly valve, so that the abrasion and the loss between the rubber sealing ring and the inner wall of the valve seat can be reduced in the process of rotating the butterfly plate;

therefore, the abrasion and the loss of the rubber sealing ring can be reduced to the greatest extent through the separation action of the rubber sealing ring outside the butterfly plate, the service life of the rubber sealing ring is prolonged, frequent replacement is not needed, and the condition that the fluid overflows due to the reduction of the sealing performance of the butterfly valve caused by the abrasion of the rubber sealing ring can be avoided to a certain extent.

Drawings

Fig. 1 is a schematic structural view of a butterfly valve with a long service life according to the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a top view of the position relationship among the butterfly plate, the rubber seal ring and the valve shaft of the present invention.

In the figure: the device comprises a valve seat 1, a driving chamber 2, a rotating rod 3, a rotating disk 4, a butterfly plate 5, a rubber sealing ring 6, a valve shaft 7, a pull rod 8, a ferrule 9, a connecting rod 10, a strip-shaped opening 11, a hollow cavity 12, a servo motor 13, a screw rod 14, a screw rod sleeve 15, a liquid sealing ring 16 and a bearing 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a butterfly valve with long service life comprises a valve seat 1 and a butterfly plate 5 installed in the valve seat 1, wherein a driving chamber 2 is installed on the upper side of the valve seat 1, a valve shaft 7 extending into the driving chamber 2 is inserted in the middle of the butterfly plate 5 in a penetrating manner, a rotating rod 3 is inserted in the side face of the driving chamber 2 in a penetrating manner, a rotating disk 4 is installed at one end of the rotating rod 3 extending out of the driving chamber 2, a rubber sealing ring 6 is movably sleeved outside the butterfly plate 5, two hollow cavities 12 are symmetrically arranged in the valve seat 1 from top to bottom, and movable mechanisms connected with the upper side and the lower side of the rubber sealing ring 6 are installed in the.

The outer edge of the upper side of the rubber sealing ring 6 is provided with a notch for the movement of the valve shaft 7, so that the rubber sealing ring 6 can be conveniently separated from the butterfly plate 5.

The movable mechanism includes pull rod 8 of fixed connection on 6 lateral wall outer margins of rubber seal, ferrule 9 has been cup jointed to the end fixing of pull rod 8, set up the bar opening 11 that is linked together with well cavity 12 on the inside wall of disk seat 1, slide in the bar opening 11 and insert connecting rod 10, connecting rod 10 stretches out the outer one end of disk seat 1 and the lateral wall rigid coupling of ferrule 9, install servo motor 13 in well cavity 12, servo motor 13's output has lead screw 14 through the shaft coupling rigid coupling, install the tip that supplies lead screw 14 to keep away from servo motor 13 on the inside wall of well cavity 12 and rotate the bearing 17 of inserting the delivery, the lateral wall of lead screw 14 tip adopts interference fit's mode fixed connection together with the inner circle of bearing 17, lead screw cover 15 is installed to the 14 external screw thread of lead screw, the one end that the connecting rod 10 keeps away from ferrule 9 and.

A liquid sealing ring 16 sleeved outside the screw rod 14 is fixedly arranged in the hollow cavity 12. This prevents liquid from intruding into the servo motor 13 and damaging the servo motor 13.

The screw rod 14, the screw rod sleeve 15, the connecting rod 10, the pull rod 8 and the ferrule 9 are all stainless steel parts, so that the parts can be prevented from being rusted and damaged, and the service life is prolonged.

In the butterfly valve with long service life, before the butterfly plate 5 is opened, the two servo motors 13 are started to drive the two lead screws 14 to rotate, so that the two lead screw sleeves 15 drive the two pull rods 8 to pull the rubber sealing ring 6, the rubber sealing ring 6 is enabled to be separated from the butterfly plate 5, then the butterfly plate 5 is rotated to open the butterfly valve, and therefore abrasion and loss between the rubber sealing ring 6 and the inner wall of the valve seat 1 can be reduced in the process of rotating the butterfly plate 5; similarly, when the butterfly plate 5 is rotated to close the butterfly valve, and then the rubber seal ring 6 is pushed to the outer seal of the butterfly plate 5.

Like this through the action of separately reducing rubber seal 6 outside the butterfly plate 5 the wearing and tearing and the loss of rubber seal 6 can be reduced to the at utmost, improve rubber seal 6's life, need not frequently change, also can avoid to a certain extent because the butterfly valve sealing performance that 6 wearing and tearing of rubber seal caused descends and leads to the excessive condition of fluid.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a long service life's butterfly valve, includes disk seat (1) and installs butterfly plate (5) in disk seat (1), its characterized in that, driver's chamber (2) are installed to the upside of disk seat (1), the middle part of butterfly plate (5) is run through and is inserted and be equipped with valve shaft (7) that extend in driver's chamber (2), the side of driver's chamber (2) is run through and is inserted and be equipped with bull stick (3), bull stick (3) stretch out the outer one end of driver's chamber (2) and install carousel (4), the outer movable sleeve of butterfly plate (5) is equipped with rubber seal (6), the longitudinal symmetry is provided with two well cavitys (12), two in disk seat (1) install the moving mechanism who is connected with both sides about rubber seal (6) respectively in well cavity (12).

2. The butterfly valve with the long service life according to claim 1, wherein the rubber sealing ring (6) has a notch at the outer edge of the upper side for the valve shaft (7) to move.

3. A butterfly valve with a long service life according to claim 2, characterised in that said mobile means comprise a tie-rod (8) fixed to the outer edge of the side wall of the rubber seal (6), a ferrule (9) is fixedly sleeved at the end part of the pull rod (8), a strip-shaped opening (11) communicated with the hollow cavity (12) is formed in the inner side wall of the valve seat (1), a connecting rod (10) is inserted in the strip-shaped opening (11) in a sliding way, one end of the connecting rod (10) extending out of the valve seat (1) is fixedly connected with the outer side wall of the ferrule (9), a servo motor (13) is arranged in the hollow cavity (12), the output end of the servo motor (13) is fixedly connected with a screw rod (14) through a coupler, the screw rod (14) is externally threaded with a screw rod sleeve (15), and one end of the connecting rod (10) far away from the ferrule (9) is fixedly connected with the outer side wall of the screw rod sleeve (15).

4. A butterfly valve with a long service life according to claim 3, characterised in that a liquid sealing ring (16) is fixedly arranged in the hollow cavity (12) and sleeved outside the screw rod (14).

5. The butterfly valve with the long service life according to claim 3, wherein a bearing (17) for inserting and conveying the end part of the screw rod (14) far away from the servo motor (13) in a rotating manner is installed on the inner side wall of the hollow cavity (12), and the outer side wall of the end part of the screw rod (14) is fixedly connected with the inner ring of the bearing (17) in an interference fit manner.

6. A butterfly valve with a long service life according to claim 3, characterised in that the screw (14), the screw sleeve (15), the connecting rod (10), the pull rod (8) and the ferrule (9) are all stainless steel pieces.

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