CN214466149U

CN214466149U - Two-way hard seal butterfly valve

Info

Publication number: CN214466149U
Application number: CN202022319616.9U
Authority: CN
Inventors: 钱琪升
Original assignee: Qidong Yong'an Valve Co ltd
Current assignee: Qidong Yong'an Valve Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-10-22
Anticipated expiration: 2030-10-19

Abstract

The utility model discloses a two-way hard seal butterfly valve, which comprises a valve body, a valve seat and a rotating device, wherein the rotating device is fixedly connected with the top end of the valve body, the rotating device comprises a turbine box, a top cover, a worm, a hand wheel, a driving gear, a driven gear and the like, the top cover is fixedly connected with the central position of the top end of the turbine box, and one end of a connecting rod is fixedly connected with the central position of the right end of the hand wheel; the utility model discloses in, can carry out the closure to the butterfly valve sealed firmly and open through setting up rotary device, it does not have the friction rotation to open and close the in-process full stroke to drive driven gear through rotatory hand wheel and rotate, eliminate all contact friction between sealing member and the disk seat, valve life has been prolonged, and ensure the complete contact between worm department sealing washer and disk seat, this kind of geometry makes the complete evenly distributed of sealing stress of sealing washer, the sealing of whole sealed face has been guaranteed, be provided with the pointer on the turbine case lid, can be along with opening or the closed condition of the motion synchronization display valve body of butterfly plate.

Description

Two-way hard seal butterfly valve

Technical Field

The utility model relates to a switching valve technical field especially relates to two-way hard seal butterfly valve.

Background

The sealing butterfly valve has the characteristics of simple structure, convenience in opening and closing, low manufacturing cost and the like, and is widely applied to medium conveying pipeline systems in various industries of national economy. The three-eccentric butterfly valve is the most common butterfly valve structure design at present due to high sealing specific pressure, and the structure of the three-eccentric butterfly valve comprises a valve body, a valve seat, a butterfly plate and a valve rod. On high-temperature and abrasive medium conveying pipelines, butterfly valves are required to have high-temperature resistance and abrasion resistance, and the butterfly plates and valve seats are generally matched in a hard sealing mode. At present, the valve seat sealing surface of the hard sealing butterfly valve is generally formed by directly processing in a valve body channel, the valve seat sealing surface is of an inclined conical surface structure, the processing technology is complex, processing errors exist in the valve seat sealing surface and the butterfly plate sealing surface, and the valve seat sealing surface and the butterfly plate sealing surface are matched with each other and then have matching errors all the time, so that the sealing performance of the existing hard sealing butterfly valve is poor. In addition, in the use process, the valve seat sealing surface and the butterfly plate sealing surface generate friction, so that the sealing surface is subjected to unrecoverable abrasion, the sealing performance of a sealing pair is reduced, and the service life of a product is short.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems, a bidirectional hard sealing butterfly valve is provided.

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

a bidirectional hard seal butterfly valve comprises a valve body, a valve seat, a fastening device and a rotating device, wherein the valve seat is fixedly connected with the bottom end of the valve body, the rotating device is fixedly connected with the top end of the valve body, the rotating device comprises a turbine box, a top cover, a connecting block, three fixing bolts, a worm, a hand wheel, a connecting rod, a driving gear, a driven gear and an installation base, the top cover is fixedly connected with the central position of the top end of the turbine box, the connecting block is fixedly connected with the central position of the bottom end of the turbine box, the three fixing bolts are fixedly connected with the left end and the right end of the lower surface of the connecting block, the hand wheel is movably connected with the central position of the right end of the turbine box, one end of the connecting rod is fixedly connected with the central position of the right end of the hand wheel, and the other end of the connecting rod penetrates through the right end of the turbine box and is fixedly connected with the left end of the driving gear, driven gear with driving gear intermeshing, just driven gear fixed connection be in the worm top, the worm sets up valve body inside intermediate position department, just worm bottom swing joint has an installation base, the driving gear with driven gear all sets up inside the turbine case.

As a further description of the above technical solution:

the valve body comprises a butterfly plate, a first fixing bolt, a pressing plate, a plurality of layers of sealing rings and positioning bolts, wherein the butterfly plate is fixedly connected to the right end of the valve body, the pressing plate is fixedly connected to the left end of the valve body, the first fixing bolt is uniformly and fixedly connected to the outer surface of the butterfly plate, the two layers of sealing rings are arranged between the butterfly plate and the pressing plate, and the two positioning bolts are respectively and fixedly connected to the upper end and the lower end of the two layers of sealing rings.

As a further description of the above technical solution:

the fastening device comprises a fixing block and two fixing bolts, the fixing block is fixedly connected between the valve body and the rotating device, and the eight fixing bolts are respectively and fixedly connected to the upper portion and the lower portion of the fixing block.

As a further description of the above technical solution:

the butterfly plate and the pressing plate are both disc-shaped.

As a further description of the above technical solution:

the turbine box cover is provided with a pointer which can synchronously display the opening or closing state of the valve along with the movement of the butterfly plate.

As a further description of the above technical solution:

the butterfly plate and the pressing plate are both made of multilayer stainless steel materials.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. can close to open hard seal butterfly valve through setting up rotary device, it does not have the friction rotation to open and close the in-process full stroke to drive driven gear through rotatory hand wheel and rotate, all contact friction between sealing member and the disk seat have been eliminated, valve life has been prolonged, and ensure the complete contact between worm department sealing washer and disk seat, this kind of geometry makes the complete evenly distributed of sealing stress of sealing washer, the sealing of whole sealed face has been guaranteed, be provided with the pointer on the turbine case lid, can be along with the opening or the closed condition of motion synchronous display valve body of butterfly plate.

Drawings

Fig. 1 shows a schematic structural diagram of a bidirectional hard seal butterfly valve provided according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a rotating device provided according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a driving gear and a driven gear provided according to an embodiment of the present invention;

fig. 4 shows a cross-sectional view of a worm provided in accordance with an embodiment of the present invention.

Illustration of the drawings:

1. a valve body; 101. a butterfly plate; 102. fixing a first bolt; 103. pressing a plate; 104. a multi-layer sealing ring; 105. positioning the bolt; 2. a valve seat; 3. a fastening device; 301. a fixed block; 302. fixing a second bolt; 4. a rotating device; 401. a turbine case; 402. a top cover; 403. connecting blocks; 404. fixing a bolt III; 405. a worm; 406. a hand wheel; 407. a connecting rod; 408. a driving gear; 409. a driven gear; 410. and (5) installing a base.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

specifically, as shown in fig. 1-4, the bidirectional hard seal butterfly valve includes a valve body 1, a valve seat 2, a fastening device 3, and a rotating device 4, where the valve seat 2 is fixedly connected to the bottom end of the valve body 1, the rotating device 4 is fixedly connected to the top end of the valve body 1, the rotating device 4 includes a turbine box 401, a top cover 402, a connecting block 403, three fixing bolts 404, a worm 405, a handwheel 406, a connecting rod 407, a driving gear 408, a driven gear 409, and a mounting base 410, the top cover 402 is fixedly connected to the center of the top end of the turbine box 401, the connecting block 403 is fixedly connected to the center of the bottom end of the turbine box 401, the three fixing bolts 404 are fixedly connected to the left and right ends of the lower surface of the connecting block 403, the handwheel 406 is movably connected to the center of the right end of the turbine box 401, one end of the connecting rod 407 is fixedly connected to the center of the right end of the handwheel 406, and the other end of the connecting rod 407 penetrates through the turbine box 401 and is fixedly connected to the left end of the driving gear 408, driven gear 409 and driving gear 408 intermeshing, and driven gear 409 fixed connection is on worm 405 top, and worm 405 sets up in the inside intermediate position department of valve body 1, and worm 405 bottom swing joint has an installation base 410, and driving gear 408 and driven gear 409 all set up inside turbine case 401.

Specifically, as shown in fig. 1, the valve body 1 includes a butterfly plate 101, a first fixing bolt 102, a pressure plate 103, a multi-layer sealing ring 104 and a positioning bolt 105, the butterfly plate 101 is fixedly connected to the right end of the valve body 1, the pressure plate 103 is fixedly connected to the left end of the valve body 1, the first fixing bolt 102 is uniformly and fixedly connected to the outer surface of the butterfly plate 101, the two multi-layer sealing rings 104 are arranged between the butterfly plate 101 and the pressure plate 103, and the two positioning bolts 105 are respectively and fixedly connected to the upper end and the lower end of the two multi-layer sealing rings 104.

Specifically, as shown in fig. 1, the fastening device 3 includes a fixing block 301 and two fixing bolts 302, the fixing block 301 is fixedly connected between the valve body 1 and the rotating device 4, and the eight fixing bolts 302 are respectively and fixedly connected around the fixing block 301.

Specifically, as shown in fig. 2, the butterfly plate 101 and the pressing plate 103 are both disc-shaped.

Specifically, as shown in fig. 2, a pointer is arranged on the cover of the turbine box 401, and can synchronously display the opening or closing state of the valve along with the movement of the butterfly plate 101.

Specifically, as shown in fig. 2, the butterfly plate 101 and the pressing plate 103 are both made of multi-layer stainless steel.

The working principle is as follows: can carry out the closure to valve body 1 through setting up rotary device 4 and open, drive driving gear 408 through clockwise rotation hand wheel 406 and rotate, and then drive driven gear 409 and rotate, make worm 405 corotation, can be rotatory with butterfly plate 101, open valve body 1, if close valve body 1, otherwise the operation can, realize opening and close the in-process full stroke frictionless rotation, all contact friction between sealing member and disk seat 2 have been eliminated, valve body 1 life has been prolonged, and ensure the complete contact between worm 405 department sealing washer and disk seat 2, this kind of geometry makes the complete evenly distributed of sealing stress of multi-level sealing washer 104, the sealed of whole sealing face has been guaranteed, turbine box 401 covers and is provided with the pointer, can be along with the motion synchronization display valve body 1's of butterfly plate 101 opening or closed state.

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

1. Two-way hard seal butterfly valve, including valve body (1), disk seat (2), fastener (3), rotary device (4), disk seat (2) fixed connection is in valve body (1) bottom, rotary device (4) fixed connection is in valve body (1) top, characterized in that, rotary device (4) include turbine case (401), top cap (402), connecting block (403), fixing bolt three (404), worm (405), hand wheel (406), connecting rod (407), driving gear (408), driven gear (409), installation base (410), top cap (402) fixed connection is in turbine case (401) top central point department of putting, connecting block (403) fixed connection is in turbine case (401) bottom central point department of putting, two fixing bolt three (404) fixed connection are in both ends about connecting block (403) lower surface, hand wheel (406) swing joint is in turbine case (401) right-hand member central point puts the department, connecting rod (407) one end fixed connection be in hand wheel (406) right-hand member central point puts the department, just connecting rod (407) other end runs through turbine case (401) right-hand member fixed connection be in driving gear (408) left end, driven gear (409) with driving gear (408) intermeshing, just driven gear (409) fixed connection be in worm (405) top, worm (405) set up valve body (1) inside intermediate position department, just worm (405) bottom swing joint has an installation base (410), driving gear (408) with driven gear (409) all set up inside turbine case (401).

2. The bidirectional hard seal butterfly valve according to claim 1, wherein the valve body (1) comprises a butterfly plate (101), a first fixing bolt (102), a pressure plate (103), a plurality of layers of seal rings (104), and a positioning bolt (105), the butterfly plate (101) is fixedly connected to the right end of the valve body (1), the pressure plate (103) is fixedly connected to the left end of the valve body (1), the first fixing bolt (102) is uniformly and fixedly connected to the outer surface of the butterfly plate (101), the two layers of seal rings (104) are arranged between the butterfly plate (101) and the pressure plate (103), and the two positioning bolts (105) are respectively and fixedly connected to the upper end and the lower end of the two layers of seal rings (104).

3. The bidirectional hard seal butterfly valve according to claim 1, wherein the fastening device (3) comprises a fixing block (301) and two fixing bolts (302), the fixing block (301) is fixedly connected between the valve body (1) and the rotating device (4), and the two fixing bolts (302) are respectively and fixedly connected to the upper and lower peripheries of the fixing block (301).

4. The bidirectional hard seal butterfly valve of claim 2, wherein the butterfly plate (101) and the pressure plate (103) are each disk-shaped.

5. The bidirectional hard seal butterfly valve according to claim 2, wherein a pointer is provided on the cover of the turbine box (401) to synchronously display the open or closed state of the valve with the movement of the butterfly plate (101).

6. The bidirectional hard seal butterfly valve of claim 2, wherein the butterfly plate (101) and the pressure plate (103) are both made of a multi-layer stainless steel material.