CN213419933U

CN213419933U - Metal sealing butterfly valve with double-sealing structure

Info

Publication number: CN213419933U
Application number: CN202021987588.1U
Authority: CN
Inventors: 钟海洋
Original assignee: Yancheng Yandu Kuibing Machinery Manufacturing Co ltd
Current assignee: Yancheng Yandu Kuibing Machinery Manufacturing Co ltd
Priority date: 2020-09-12
Filing date: 2020-09-12
Publication date: 2021-06-11
Anticipated expiration: 2030-09-12

Abstract

The utility model discloses a metal sealing butterfly valve with a double-sealing structure, which comprises a valve body and a valve plate; a valve body: the side surface of the valve body is communicated with an upper valve seat and a lower valve seat, the bottom end of the lower valve seat is provided with a lower valve cover, the interior of the lower valve seat is rotatably connected with a lower valve rod, the upper valve seat is rotatably connected with an upper valve rod, the top end of the upper valve rod is connected with a supporting seat through a fixing plate, the top end of the supporting seat is provided with a worm gear box, the end part of an input shaft of the worm gear box is provided with a rotary disc, the output end of the rotary disc is connected with the top end of the upper valve rod through a coupler, the inner wall of the valve body, the positions corresponding to; a valve plate: the side surface of the metal sealing butterfly valve is provided with the sealing ring, the side surface of the valve plate is provided with the sliding plate at the position corresponding to the arc sealing seat, the end part of the sliding plate is provided with two groups of fixing seats, the end part of each fixing seat is provided with the slot, and the metal sealing butterfly valve is good in sealing effect and convenient to use.

Description

Metal sealing butterfly valve with double-sealing structure

Technical Field

The utility model relates to a butterfly valve technical field specifically is a take metal seal butterfly valve of double containment structure.

Background

The butterfly valve is a simple structure regulating valve, can be used for the on-off control of low pressure pipeline medium, the butterfly valve refers to the closure member and is the disc, rotate around the valve shaft and reach a kind of valve opened and closed, the valve can be used for controlling the flow of various types of fluid such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive medium, mainly play and cut off and throttle the effect on the pipeline, the butterfly valve opens and closes the piece and is a disc-shaped butterfly plate, rotate around its own axis in the valve body, thus reach the purpose of opening and close or adjusting, the traditional butterfly valve is mostly single seal structure, the sealed effect is poor, it is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a take metal seal butterfly valve of double containment structure, this metal seal butterfly valve's sealed effectual, facilitate the use, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a metal seal butterfly valve with a double-seal structure comprises a valve body and a valve plate;

a valve body: the side surface of the valve body is communicated with an upper valve seat and a lower valve seat, the bottom end of the lower valve seat is provided with a lower valve cover, the interior of the lower valve seat is rotatably connected with a lower valve rod, the upper valve seat is rotatably connected with an upper valve rod, the top end of the upper valve rod is connected with a supporting seat through a fixing plate, the top end of the supporting seat is provided with a worm gear box, the end part of an input shaft of the worm gear box is provided with a rotary disc, the output end of the rotary disc is connected with the top end of the upper valve rod through a coupler, the inner wall of the valve body, the positions corresponding to;

a valve plate: the side surface of the valve plate is provided with a sealing ring, the side surface of the valve plate is provided with a sliding plate at a position corresponding to the arc sealing seat, the end part of the valve plate is provided with two groups of fixed seats, the end part of each fixed seat is provided with a slot, and the lower valve rod and the upper valve rod are respectively inserted into the slots in the corresponding fixed seats and are fixedly connected with the corresponding fixed seats through pin shafts;

wherein: and the sliding plate is in sliding fit with the arc sealing seat.

Further, still include the back shaft, the back shaft is equipped with four, and the array is installed in the bottom of supporting seat, its top and supporting seat threaded connection, and the stopper has been cup jointed to its side, and the bottom of fixed plate is run through to its bottom to threaded connection has the nut, conveniently installs and fixes the worm gear case.

Further, still include seal ring, the mounting groove has been seted up respectively at the both ends of valve body, seal ring installs in the mounting groove, can improve the compactness of metal seal butterfly valve and external pipe connection.

Furthermore, the semicircular sealing ring is a rubber sealing washer, and two groups of limiting grooves are formed in the inner wall of the semicircular sealing ring and can be closely connected with the valve plate.

Further, the sealing ring is equipped with two sets ofly, and the side of two sets of sealing rings all is equipped with the chamfer structure, and its and the inside spacing groove joint cooperation of half-round seal circle help improving the leakproofness.

Compared with the prior art, the beneficial effects of the utility model are that: this take metal seal butterfly valve of double containment structure has following benefit:

this take double containment structure's metal seal butterfly valve's mounting structure is simple, and convenience of customers uses, structurally adopts double containment structure, and is sealed effectual, and long service life, can effectually avoid the emergence of weeping phenomenon, improves the factor of safety of liquid in transportation process.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic sectional view of the plane B-B of the present invention;

fig. 4 is a schematic sectional view of a-a surface of the present invention.

In the figure: the valve comprises a valve body 1, a valve plate 2, a fixed seat 3, a sealing washer 4, an upper valve seat 5, a lower valve seat 6, a lower valve cover 7, an upper valve rod 8, a lower valve rod 9, a fixing plate 10, a coupler 11, a support shaft 12, a support seat 13, a worm gear box 14, a rotary disc 15, a circular arc sealing seat 16, a sliding plate 17, a semicircular sealing washer 18 and a sealing ring 19.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a metal seal butterfly valve with a double-seal structure comprises a valve body 1 and a valve plate 2;

valve body 1: an upper valve seat 5 and a lower valve seat 6 are communicated with the side surfaces, the upper valve seat 5, the lower valve seat 6 and a valve body 1 are of an integral structure, a lower valve cover 7 is installed at the bottom end of the lower valve seat 6, the lower valve cover 7 and the lower valve seat 6 are fixed through screws, a lower valve rod 9 is rotatably connected in the lower valve seat, an upper valve rod 8 is rotatably connected in the upper valve seat 5, the top end of the upper valve rod 8 is connected with a supporting seat 13 through a fixing plate 10, a worm gear box 14 is installed at the top end of the supporting seat 13, a rotary disc 15 is installed at the end part of an input shaft of the worm gear box 14, the output end of the rotary disc is connected with the top end of the upper valve rod 8 through a coupler 11, the upper valve rod 8 can be driven to rotate after the rotary disc 15 is rotated, circular arc sealing seats 16 are installed at the positions, corresponding to the upper valve seat 5 and, the semicircular sealing ring 18 is a rubber sealing washer, two ends of the semicircular sealing ring 18 are respectively connected with the two arc sealing seats 16, two sets of limit grooves are arranged on the inner wall of the sealing ring, two sets of sealing rings 19 are arranged, the side surfaces of the two sets of sealing rings 19 are provided with chamfer structures, which is clamped and matched with a limit groove in the semicircular sealing ring 18, so that when the valve plate 2 is closed, ensures excellent sealing performance, and also comprises four support shafts 12, the support shafts 12 are arranged at the bottom end of a support seat 13 in an array manner, the top end of the fixing plate is connected with the supporting seat 13 by screw thread, the side surface of the fixing plate is sleeved with a limiting block, the bottom end of the fixing plate penetrates through the bottom end of the fixing plate 10, the butterfly valve is characterized in that the butterfly valve body is provided with a nut in threaded connection, the connecting mode is simple, the mounting and dismounting are convenient, the butterfly valve further comprises a sealing washer 4, mounting grooves are formed in two ends of the valve body 1 respectively, and the sealing washer 4 is mounted in the mounting grooves, so that the tightness of connection between the butterfly valve and an external connecting pipe can be improved;

the valve plate 2: the side surface of the butterfly valve is provided with a sealing ring 19, the sealing ring 19 is matched with a semicircular sealing ring 18 for use, the sealing performance of the butterfly valve is improved, the side surface of the valve plate 2 is provided with a sliding plate 17 at a position corresponding to an arc sealing seat 16, the end part of the sliding plate is provided with two groups of fixing seats 3, the end part of each fixing seat 3 is provided with a slot, the lower valve rod 9 and the upper valve rod 8 are respectively inserted into the corresponding slots in the fixing seats 3 and fixedly connected with the corresponding fixing seats 3 through pin shafts, the lower valve rod 9 and the upper valve rod 8 are conveniently installed and fixed, and the valve plate 2 is;

wherein: the sliding plate 17 is in sliding fit with the arc sealing seat 16.

When in use: the carousel 15 rotates, and then under the transmission of worm gear case 14, drives the valve rod 8 and rotates, and then drives valve plate 2 and rotate, and slide 17 slides along circular arc seal receptacle 16 during the rotation, and when rotating 90 degrees, the sealing ring 19 joint of valve plate 2 both sides is in the spacing inslot of semi-circular seal 18 inner wall to realize sealed function.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take metal seal butterfly valve of double containment structure which characterized in that: comprises a valve body (1) and a valve plate (2);

valve body (1): the side surface of the valve body is communicated with an upper valve seat (5) and a lower valve seat (6), the bottom end of the lower valve seat (6) is provided with a lower valve cover (7), the interior of the lower valve cover is rotatably connected with a lower valve rod (9), the upper valve rod (8) is rotatably connected with the upper valve seat (5), the top end of the upper valve seat is connected with a supporting seat (13) through a fixing plate (10), the top end of the supporting seat (13) is provided with a worm and gear box (14), the end part of an input shaft of the worm and gear box (14) is provided with a rotary table (15), the output end of the worm and gear box is connected with the top end of the upper valve rod (8) through a coupler (11), the inner wall of the valve body (1) and the positions corresponding to the upper valve seat (5;

valve plate (2): a sealing ring (19) is mounted on the side surface of the valve plate (2), a sliding plate (17) is mounted at the position, corresponding to the arc sealing seat (16), of the side surface of the valve plate, two groups of fixing seats (3) are arranged at the end parts of the sliding plate, inserting grooves are formed in the end parts of the fixing seats (3), the lower valve rod (9) and the upper valve rod (8) are respectively inserted into the inserting grooves in the corresponding fixing seats (3) and fixedly connected with the corresponding fixing seats (3) through pin shafts;

wherein: the sliding plate (17) is in sliding fit with the arc sealing seat (16).

2. The metal seal butterfly valve with the double seal structure according to claim 1, wherein: the support device is characterized by further comprising four support shafts (12), the support shafts (12) are arranged at the bottom end of the support base (13), the top ends of the support shafts are in threaded connection with the support base (13), the side faces of the support shafts are sleeved with limit blocks, the bottom ends of the support shafts penetrate through the bottom end of the fixing plate (10), and nuts are in threaded connection.

3. The metal seal butterfly valve with the double seal structure according to claim 1, wherein: still include seal ring (4), the mounting groove has been seted up respectively at the both ends of valve body (1), seal ring (4) are installed in the mounting groove.

4. The metal seal butterfly valve with the double seal structure according to claim 1, wherein: the semicircular sealing ring (18) is a rubber sealing washer, and two groups of limiting grooves are formed in the inner wall of the semicircular sealing ring.

5. The metal seal butterfly valve with the double seal structure according to claim 4, wherein: the sealing rings (19) are provided with two groups, and the side faces of the two groups of sealing rings (19) are provided with chamfering structures which are in clamping fit with limiting grooves in the semicircular sealing rings (18).