CN219796134U

CN219796134U - Butterfly valve sealing device

Info

Publication number: CN219796134U
Application number: CN202320542207.6U
Authority: CN
Inventors: 王树林; 张典
Original assignee: Jiangsu Henghe Automatic Control Valve Co ltd
Current assignee: Jiangsu Henghe Automatic Control Valve Co ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-10-03
Anticipated expiration: 2033-03-20

Abstract

The utility model provides a butterfly valve sealing device. The butterfly valve sealing device includes: a valve seat; the disc plate is arranged in the valve seat; the protective shell is sleeved on the disc plate and is rotationally connected with the valve seat; the sealing cover is fixedly arranged on the valve seat; the box body is arranged on the valve seat; the valve rod is fixedly arranged on the disc plate, and the top end of the valve rod penetrates out of the box body; the worm is rotatably arranged in the box body, and one end of the worm extends out of the box body; the worm wheel is fixedly arranged on the valve rod and meshed with the worm; the hand wheel is fixedly arranged at one end of the valve rod. The butterfly valve sealing device provided by the utility model has the advantages that the butterfly valve sealing device can protect the butterfly plate from being damaged by soft sealing caused by fluid flushing, and the sealing effect of the butterfly valve main body can be ensured.

Description

Butterfly valve sealing device

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to a butterfly valve sealing device.

Background

The butterfly valve is called a flap valve, and the butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly valve in the valve body, so that the purpose of opening and closing or adjusting is achieved, however, the front face of the butterfly plate sealing piece of the existing butterfly valve is flushed by a fluid medium for a long time, so that soft sealing is damaged, the sealing performance of the valve is deteriorated or the sealing of the valve is invalid, and leakage is caused.

Accordingly, there is a need for a new butterfly valve sealing arrangement that addresses the above-described problems.

Disclosure of Invention

The utility model provides a butterfly valve sealing device, which aims to solve the technical problems that a butterfly plate sealing element in a butterfly valve is damaged and the sealing performance is poor.

The butterfly valve sealing device provided by the utility model comprises: a valve seat; the disc plate is arranged in the valve seat; the protective shell is sleeved on the disc plate and is rotationally connected with the valve seat; the sealing cover is fixedly arranged on the valve seat; the box body is arranged on the valve seat; the valve rod is fixedly arranged on the disc plate, and the top end of the valve rod penetrates out of the box body; the worm is rotatably arranged in the box body, and one end of the worm extends out of the box body; the worm wheel is fixedly arranged on the valve rod and meshed with the worm; the hand wheel is fixedly arranged at one end of the valve rod.

As a further scheme of the utility model, the top of the box body is provided with a cover plate, an oil filling port is formed in the cover plate, a sealing plug cover is arranged in the oil filling port, a threaded column is arranged at the top end of the valve rod in a threaded manner, a pointer is fixedly arranged at the top end of the threaded column, a scale ring is arranged outside the pointer, and the scale ring is fixedly connected with the cover plate.

As a further scheme of the utility model, the valve seat is internally symmetrically provided with the mounting grooves, the two mounting grooves are matched with the protecting shell, the protecting shell is symmetrically embedded with the balls, and the two balls are respectively contacted with the inner walls of the two mounting grooves.

As a further scheme of the utility model, the cover plate is provided with a bolt in a threaded manner, and the bolt is in threaded connection with the box body.

As a further scheme of the utility model, a through hole is formed in the bottom of the box body, the through hole is matched with the valve rod, and a sealing element is arranged in the through hole.

As a further scheme of the utility model, a plurality of support rods are symmetrically and fixedly arranged at the bottom of the box body, and the bottom ends of the support rods are fixedly connected with the valve seat.

As a further scheme of the utility model, the top of the sealing plug cover is fixedly provided with a pull ring, and the pull ring is made of plastic materials.

Compared with the related art, the butterfly valve sealing device provided by the utility model has the following beneficial effects:

the utility model provides a butterfly valve sealing device, which comprises:

1. through the protective shell, the disc plate can be protected, soft sealing damage caused by direct impact of liquid to the disc plate is avoided, so that the sealing effect of the butterfly valve is ensured, the component can be installed through the box body, the component can be shielded and protected, the component is prevented from being corroded by dust, and through the cover plate, the component in the box body is overhauled and maintained after the follow-up personnel open the box body;

2. through the screw thread post that sets up, joinable installation pointer, through the pointer that sets up, can rotate along with the valve rod and change the orientation, through the scale ring that sets up, personnel can consult the numerical value that is pointed by the pointer on it to accurate judgement end dish board degree of opening and shutting, through the bolt that sets up, can be spacing fixed to the apron, through the bracing piece of setting, joinable installation box, through the pull ring of setting, so that personnel's operation pulls and opens the sealed cock head.

Drawings

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

FIG. 1 is a schematic diagram of a preferred embodiment of a butterfly valve seal of the present utility model in a front cross-sectional configuration;

FIG. 2 is an enlarged schematic view of the portion A in FIG. 1;

FIG. 3 is an enlarged schematic view of the portion B of FIG. 1;

fig. 4 is an assembled view of the closure plate and the sealing plug of the present utility model.

In the figure: 1. a valve seat; 2. a dish plate; 3. a protective shell; 4. sealing cover; 5. a case body; 6. a valve stem; 7. a worm; 8. a worm wheel; 9. a hand wheel; 10. a cover plate; 11. sealing the plug cover; 12. a threaded column; 13. a pointer; 14. a scale ring; 15. a mounting groove; 16. and (3) rolling balls.

Detailed Description

Referring to fig. 1-4, fig. 1 is a schematic cross-sectional front view of a butterfly valve sealing apparatus according to a preferred embodiment of the utility model; FIG. 2 is an enlarged schematic view of the portion A in FIG. 1; FIG. 3 is an enlarged schematic view of the portion B of FIG. 1; fig. 4 is an assembled view of the closure plate and the sealing plug of the present utility model. Butterfly valve sealing device includes: a valve seat 1; a disc plate 2, wherein the disc plate 2 is arranged in the valve seat 1; the protective shell 3 is sleeved on the disc plate 2, and the protective shell 3 is rotationally connected with the valve seat 1; the sealing cover 4 is fixedly arranged on the valve seat 1; the box body 5 is arranged on the valve seat 1; the valve rod 6 is fixedly arranged on the disc plate 2, and the top end of the valve rod 6 penetrates out of the box body 5; the worm 7 is rotatably arranged in the box body 5, and one end of the worm 7 extends out of the box body 5; a worm wheel 8, the worm wheel 8 is fixedly arranged on the valve rod 6, and the worm wheel 8 is meshed with the worm 7; the hand wheel 9, hand wheel 9 fixed mounting is on the one end of valve rod 6, through the protecting crust 3 that sets up, can protect dish board 2, avoids liquid direct impact to cause soft seal impaired to dish board 2 to guarantee the sealed effect of butterfly valve, but through the box body 5 installation component of setting, and can also shelter from the protection to the component, avoid it by the dust erosion.

The top of box body 5 is provided with apron 10, the oiling mouth has been seted up on the apron 10, be provided with sealed cock cap 11 in the oiling mouth, threaded column 12 is installed to the top screw thread of valve rod 6, fixed mounting has pointer 13 on the top of threaded column 12, is provided with scale ring 14 outward of pointer 13, scale ring 14 and apron 10 fixed connection, through apron 10 of setting, follow-up personnel open the back so that maintenance box body 5 interior subassembly, through threaded column 12 of setting, connectable installation pointer 13, through pointer 13 of setting, can change the direction along with valve rod 6 rotation, through scale ring 14 of setting, personnel can refer the numerical value that is pointed by pointer 13 on it to the accuracy judges end dish board 2 degree of opening and shutting.

The valve seat 1 is internally and symmetrically provided with mounting grooves 15, two mounting grooves 15 are matched with the protective shell 3, the protective shell 3 is symmetrically embedded with balls 16, and the two balls 16 are respectively contacted with the inner walls of the two mounting grooves 15.

Bolts are arranged on the cover plate 10 in a threaded mode, the bolts are in threaded connection with the box body 5, and the cover plate 10 can be limited and fixed through the arranged bolts.

The bottom of box body 5 has seted up the opening, opening and valve rod 6 looks adaptation, be provided with the sealing member in the opening.

The bottom symmetry fixed mounting of box body 5 has a plurality of bracing pieces, and is a plurality of the bottom of bracing piece is all with disk seat 1 fixed connection, through the bracing piece that sets up, but the joinable mounting box body 5.

The top fixed mounting of sealing cock lid 11 has the pull ring, the pull ring is plastic material, through the pull ring that sets up to personnel's operation pulls and opens sealing cock lid 11.

It should be noted that, in the present utility model, the circuits, electronic components and modules are all related to the prior art, and those skilled in the art may implement the present utility model completely, and it is needless to say that the protection of the present utility model does not relate to improvement of software and methods.

The working principle of the butterfly valve sealing device provided by the utility model is as follows:

when the disc plate 2 is opened, a person can rotate the hand wheel 9 to drive the worm 7 to rotate, the rotating worm 7 drives the worm wheel 8, the valve rod 6 can be driven to rotate, the disc plate 2 can be opened along with the rotation of the valve rod 6, the protective shell 3 can also rotate along with the disc plate 2, when liquid flows through the opened aperture, the protective shell 3 shields and protects the disc plate 2, the liquid can be prevented from directly impacting the disc plate 2 to cause soft sealing damage, the sealing effect of the butterfly valve is ensured, the person can regularly add a proper amount of lubricating oil into the box body 5 according to the use condition, and when the person is refueled, the person buckles the pull ring to pull out the sealing plug cover 11, and then the lubricating oil is poured into the box body 5 from the oil filling port, so that the infiltration of the lubricating oil is realized, the rust damage of the worm 7 and the worm wheel 8 can be avoided, and the service life of the extending component is prolonged.

the utility model provides a butterfly valve sealing device, which can protect a butterfly plate 2 through a protective shell 3, prevent liquid from directly impacting the butterfly plate 2 to cause soft sealing damage, further ensure the sealing effect of the butterfly valve, can mount a component through a box body 5 which is arranged, can shield and protect the component from dust erosion, can be opened by subsequent personnel so as to overhaul and maintain the component in the box body 5, can be connected with a pointer 13 through a threaded column 12 which is arranged, can rotate along with a valve rod 6 to change the direction through the pointer 13 which is arranged, can refer to the numerical value of the pointer 13 on the pointer through a scale ring 14 which is arranged so as to accurately judge the opening and closing degree of the butterfly plate 2, can limit and fix the cover plate 10 through a bolt which is arranged, can be connected with the box body 5 through a support rod which is arranged, and can conveniently operate and pull and open a sealing plug cover 11 through a pull ring which is arranged.

It should be noted that, the device structure and the drawings of the present utility model mainly describe the principle of the present utility model, in terms of the technology of the design principle, the arrangement of the power mechanism, the power supply system, the control system, etc. of the device is not completely described, and on the premise that the person skilled in the art understands the principle of the present utility model, the specific details of the power mechanism, the power supply system and the control system can be clearly known, the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the person skilled in the art;

the standard parts used in the method can be purchased from the market, and can be customized according to the description of the specification and the drawings, the specific connection modes of the parts are conventional means such as mature bolts, rivets and welding in the prior art, the machines, the parts and the equipment are conventional models in the prior art, and the structures and the principles of the parts are all known by the skilled person through technical manuals or through conventional experimental methods.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents, and in other related technical fields, which are equally encompassed by the scope of the present utility model.

Claims

1. A butterfly valve seal comprising:

a valve seat;

the disc plate is arranged in the valve seat;

the protective shell is sleeved on the disc plate and is rotationally connected with the valve seat;

the sealing cover is fixedly arranged on the valve seat;

the box body is arranged on the valve seat;

the valve rod is fixedly arranged on the disc plate, and the top end of the valve rod penetrates out of the box body;

the worm is rotatably arranged in the box body, and one end of the worm extends out of the box body;

the worm wheel is fixedly arranged on the valve rod and meshed with the worm;

the hand wheel is fixedly arranged at one end of the valve rod.

2. The butterfly valve sealing device according to claim 1, wherein a cover plate is arranged at the top of the box body, an oil filling port is formed in the cover plate, a sealing plug cover is arranged in the oil filling port, a threaded column is arranged at the top end of the valve rod in a threaded manner, a pointer is fixedly arranged at the top end of the threaded column, a scale ring is arranged outside the pointer, and the scale ring is fixedly connected with the cover plate.

3. The butterfly valve sealing device of claim 1, wherein mounting grooves are symmetrically formed in the valve seat, the two mounting grooves are matched with the protecting shell, balls are symmetrically inlaid on the protecting shell, and the two balls are respectively contacted with the inner walls of the two mounting grooves.

4. The butterfly valve seal of claim 2 wherein the cover plate is threadably mounted with a bolt that is threadably coupled to the housing.

5. The butterfly valve sealing device of claim 1, wherein a through opening is formed in the bottom of the box body, the through opening is matched with the valve rod, and a sealing element is arranged in the through opening.

6. The butterfly valve sealing device of claim 1, wherein a plurality of support rods are symmetrically and fixedly arranged at the bottom of the box body, and the bottom ends of the plurality of support rods are fixedly connected with the valve seat.

7. The butterfly valve sealing device of claim 2, wherein a pull ring is fixedly mounted on the top of the sealing plug cover, and the pull ring is made of plastic.