CN107061833B

CN107061833B - Uniformly distributed ring pressure type sealing valve and encapsulating method

Info

Publication number: CN107061833B
Application number: CN201710175137.4A
Authority: CN
Inventors: 张功学; 陈宁
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2017-03-22
Filing date: 2017-03-22
Publication date: 2019-02-22
Anticipated expiration: 2037-03-22
Also published as: CN107061833A

Abstract

The invention belongs to mechanical seal valve fields, more particularly to uniformly distributed ring pressure type sealing valve and encapsulating method, the cam disc that can be rotated synchronously with transmission shaft is installed on the transmission shaft of sealing valve, several cam ends are distributed in central symmetry on cam disc, contact is equipped with drive rod on the working face of each cam end, drive rod is arranged radially along cam disc, positioning disk is equipped with the guiding device that radially-directed is carried out for drive rod, the inner end of each drive rod and the work face contact of cam end are arranged, block is suppressed in outer end connection, it suppresses block and is connect with the sealing inner ring indent circle for sealing inner ring, the sealed outer ring indent circle of the outer flange collar of sealing inner ring and sealed outer ring that seal inner ring fits, it is connected between positioning disk and transmission shaft by the intermittent motion mechanism of unidirectional drive, sealing valve of the invention has structure simple, the good feature of sealing effect.

Description

Uniformly distributed ring pressure type sealing valve and encapsulating method

[technical field]

The invention belongs to mechanical seal valve fields, and in particular to uniformly distributed ring pressure type sealing valve and encapsulating method.

[background technique]

Currently, sealing valve type is more, there is that structure is complicated, poor sealing effect, smaller scope of application and reliability are poor, The problems such as structural design of fittings is complicated.

[summary of the invention]

In order to overcome problems of the prior art, the purpose of the present invention is to provide uniformly distributed ring pressure type sealing valves and close Encapsulation method, sealing valve of the invention have structure simple, the good feature of sealing effect.

The purpose of the present invention is achieved through the following technical solutions:

Uniformly distributed ring pressure type sealing valve, including positioning disk, sealed outer ring, block and sealing inner ring are suppressed, the axle center of positioning disk turns It is dynamic to be connected with transmission shaft, the cam disc that can be rotated synchronously with transmission shaft, central symmetry point on cam disc are installed on transmission shaft Several cam ends are furnished with, contact is equipped with drive rod on the working face of each cam end, and drive rod is arranged radially along cam disc, fixed Position disk is equipped with the guiding device that radially-directed is carried out for drive rod, the inner end of each drive rod and the work face contact of cam end Setting, outer end connection suppress block, suppress block and connect with the sealing inner ring indent circle for sealing inner ring, seal outside the sealing inner ring of inner ring The sealed outer ring indent circle of flange collar and sealed outer ring fits, and passes through the intermittent movement of unidirectional drive between positioning disk and transmission shaft Mechanism connection.

The outer end of the drive rod is equipped with the locating ring for being positioned to all drive rods, locating ring and guiding device Or positioning disk is fixedly connected, and the location hole of the outer end stretching for drive rod is offered on locating ring.

The intermittent motion mechanism of the unidirectional drive is ratchet and pawl arrangement.

The ratchet and pawl arrangement includes the ratchet pawl being arranged on positioning disk or guiding device and is arranged on transmission shaft Ratchet, ratchet pawl be arranged in position compatible with ratchet.

The valve hand for driving transmission shaft to rotate is connected on the transmission shaft, valve hand is installed on top cover, top cover with it is close Seal is fixedly connected, and opening is offered on top cover, and the surface of ratchet pawl is arranged in opening.

The guiding device is position-arresting disk, and position-arresting disk is fixedly connected with the positioning disk, and position-arresting disk radially opens up promising biography The intermediate position of the guide groove of lever guiding, drive rod is arranged in the guide groove.

The inner end of the drive rod is equipped with idler wheel, the work face contact of idler wheel and cam end.

The drive rod is that second level suppresses bar.

There are six cam ends for central symmetry distribution on the cam disc.

The encapsulating method of uniformly distributed ring pressure type sealing valve, includes the following steps:

Transmission shaft rotation is driven, driving cam disc rotates synchronously when transmission shaft rotates, each convex in cam disc rotation process The working face at wheel end drives corresponding drive rod to synchronize along the radial direction of cam disc and is displaced outwardly, when drive rod is moved radially outwards Push and suppress the sealing inner ring indent circle force that block is synchronized to sealing inner ring so that the outer flange collar of sealing inner ring of sealing inner ring with it is close The sealed outer ring indent circle for sealing outer ring is close to, and the sealing between sealing inner ring and sealed outer ring is realized, in transmission shaft rotation process In, the intermittent motion mechanism of unidirectional drive one-directionally rotates transmission shaft and cam disc is driven to rotate.

Compared with prior art, the invention has the following beneficial effects:

Uniformly distributed ring pressure type sealing valve of the invention on transmission shaft by installing the cam that can be rotated synchronously with transmission shaft Disk, central symmetry is distributed several cam ends on cam disc, and contact sets drive rod on the working face of each cam end, on positioning disk Equipped with the guiding device for carrying out radially-directed for drive rod, the inner end of each drive rod and the work face contact of cam end are arranged, Block is suppressed in outer end connection, suppresses block and connect with the sealing inner ring indent circle for sealing inner ring, seals the outer flange collar of sealing inner ring of inner ring It fits with the sealed outer ring indent circle of sealed outer ring, passes through the intermittent motion mechanism of unidirectional drive between positioning disk and transmission shaft Connection, when being sealed, driving transmission shaft rotation, driving cam disc is rotated synchronously when transmission shaft rotates, and cam disc rotated Cheng Zhong, the working face of each cam end drive corresponding drive rod to synchronize along the radial direction of cam disc and are displaced outwardly, and drive rod is along diameter To the sealing inner ring indent circle force suppressed block and be synchronized to sealing inner ring is pushed when being displaced outwardly, so that in the sealing of sealing inner ring It encloses outer flange collar to be close to the sealed outer ring indent circle of sealed outer ring, realizes the sealing between sealing inner ring and sealed outer ring, passing In moving axis rotation process, the intermittent motion mechanism of unidirectional drive one-directionally rotates transmission shaft and cam disc is driven to rotate, the present invention Sealing valve have structure it is simple, the good feature of sealing effect.

Further, by the way that the locating ring for being positioned to all drive rods, positioning are arranged in the outer end of drive rod Circle is fixedly connected with guiding device or positioning disk, and the location hole of the outer end stretching for drive rod is opened up on locating ring, and locating ring is protected The stability in drive rod moving process has been demonstrate,proved, drive rod is prevented to get stuck, can not work normally.

Further, the intermittent motion mechanism of unidirectional drive is ratchet and pawl arrangement, and both structure is simple for ratchet and pawl arrangement, And can be realized transmission shaft one-directional rotation purpose, also help sealing valve sealing after sealing state holding, stable structure, Effect is good.

Further, opening is offered on top cover, opening is arranged in the surface of ratchet pawl, needs to release in sealing valve close Feng Shi directly stirs ratchet pawl in the opening and engages with ratchet removal, it will be able to keep drive rod, sealing inner ring, cam disc extensive It is multiple to unsealing when state, make sealing valve depressurization, therefore the opening is so that depressurization becomes efficient quick.

Further, the inner end of drive rod is equipped with idler wheel, and the work face contact of idler wheel and cam end can be subtracted by idler wheel Resistance between small drive rod and cam end both ensure that movement flexibly and fast, also reduce the mill of drive rod and cam end Damage.

Further, drive rod is that second level suppresses bar, and suppressing this elastic bar of bar by second level can be close in sealing valve Be honored as a queen and carry out stable pressure maintaining, be further ensured that sealing effect, additionally it is possible to make up because drive rod, cam disc processing and assembled The error generated in journey causes the movement of each drive rod inconsistent, and further resulting in sealing, inner ring circumferential direction stress is inconsistent causes The non-uniform problem of sealing performance.

[Detailed description of the invention]

Fig. 1 is the top view of uniformly distributed ring pressure type sealing valve of the invention.

Fig. 2 is that cam disc of the invention, transmission shaft, ratchet, position-arresting disk and second level suppress the three-dimensional of the connection relationship between bar Figure.

Fig. 3 is cam disc of the invention, transmission shaft, ratchet, position-arresting disk, second level suppress the pass of the connection between bar and positioning disk It is three-dimensional figure.

Fig. 4 is the schematic three dimensional views of locating ring of the invention.

Connection relationship three-dimensional figure of the Fig. 5 between valve hand and top cover of the invention.

Fig. 6 is the three dimensional structure diagram of sealing inner ring of the invention.

Fig. 7 is the three dimensional structure diagram of sealed outer ring of the invention.

Wherein, 1- valve hand, 2- top cover, 2-1- are open, 301- ratchet pawl, 4- locating ring, 4-1- location hole, in 5- sealing Circle, 5-1- seal inner ring indent circle, and 5-2- seals the outer flange collar of inner ring, 6- transmission shaft, and 7- suppresses block, 8- ratchet, 9- position-arresting disk, 9- 1- guide groove, 10- second level suppress bar, 11- positioning disk, 12- cam disc, 12-1- cam end, 12-1-1- working face, 13- sealing Outer ring, 13-1- sealed outer ring indent circle, the outer flange collar of 13-2 sealed outer ring, 14- idler wheel, 15- tray deck.

[specific embodiment]

It is next with reference to the accompanying drawing that the present invention is further illustrated.

As shown in Fig. 1-Fig. 7, uniformly distributed ring pressure type sealing valve of the invention, including positioning disk 11, sealed outer ring 13, suppress block 7 are connected with transmission shaft 6 with sealing inner ring 5, the axis rotation of positioning disk 11, and being equipped on transmission shaft 6 can be synchronous with transmission shaft 6 The cam disc 12 of rotation, there are six cam end 12-1, the working faces of each cam end 12-1 for central symmetry distribution on cam disc 12 Contact, which is equipped with, on 12-1-1 suppresses bar 10 as the second level of drive rod, and second level suppresses bar 10 and is used for radial power transmission, and second level suppresses bar 10 are arranged radially along cam disc 12, and positioning disk 11, which is equipped with, suppresses the guiding device that bar 10 carries out radially-directed for second level, each Second level suppresses the inner end of bar 10 and the work face contact of cam end is arranged, and block 7 is suppressed in outer end connection, suppresses block 7 and sealing inner ring 5 Sealing inner ring indent circle 5-1 connection, in the outer flange collar 5-2 of sealing inner ring of sealing inner ring 5 and the sealed outer ring of sealed outer ring 13 Recessed circle 13-1 fits, and is connected between positioning disk 11 and transmission shaft 6 by the intermittent motion mechanism of unidirectional drive.

As shown in Figure 1 and Figure 4, the outer end that second level suppresses bar 10 is additionally provided with to be positioned for suppressing bar 10 to all second levels Locating ring 4, locating ring 4 is fixedly connected with guiding device or positioning disk 11, offers on locating ring 4 and suppress bar 10 for second level The location hole 4-1 that outer end is stretched out.

As shown in Figure 1-Figure 3, the intermittent motion mechanism of unidirectional drive is ratchet and pawl arrangement, and ratchet and pawl arrangement includes setting Set on positioning disk 11 or guiding device ratchet pawl 301 and the ratchet 8 that is arranged on transmission shaft 6, the setting of ratchet pawl 301 with The compatible position of ratchet 8, guiding device are position-arresting disk 9, and position-arresting disk 9 is fixedly connected with positioning disk 11, and position-arresting disk 9 is radially The guide groove 9-1 that promising second level suppresses the guiding of bar 10 is opened up, the intermediate position that second level suppresses bar 10 is arranged in guide groove 9-1, Also pass through tray deck 15 in the inner end that second level suppresses bar 10 and is connected with idler wheel 14, the working face 12- of idler wheel 14 and cam end 12-1 1-1 contact.

As shown in figure 5, being connected with the valve hand 1 for driving transmission shaft 6 to rotate, valve hand 1 on transmission shaft 6 in conjunction with Fig. 1-Fig. 3 It is installed on top cover 2, top cover 2, in offering opening 2-1 on sealing 5 side of inner ring, top cover 2, is opened by filling adhesives The surface of ratchet pawl 301 is arranged in mouth 2-1.

As shown in Figure 6 and Figure 7, it in conjunction with Fig. 1, sealing inner ring indent circle 5-1 of the invention, seals the outer flange collar 5-2 of inner ring, is close Sealing outer ring indent circle 13-1 and the outer flange collar 13-2 of sealed outer ring is arcwall face, the outer flange collar 5-2's of sealing inner ring of sealing inner ring 5 Shape is adapted with the sealed outer ring indent circle 13-1 shape of sealed outer ring 13, so that the outer flange collar 5-2 of sealing inner ring and sealing are outer Circle indent circle 13-1 can be fitted closely, and guarantee sealing performance, and of the invention suppresses block 7 and sealing inner ring indent circle 5-1 interconnecting piece The shape of position is adapted, so that suppressing after block 7 connect with sealing inner ring 5, is suppressed the outside of block 7 and is sealed inner ring indent circle 5- 1 is close to, so that suppressing 7 pairs of sealing 5 uniform force applications of inner ring of block, is further ensured that sealing effect.

Of the invention, valve hand 1 is that spline is connect with transmission shaft 6；The opening 2-1 of 2 body of top cover setting can make ratchet pawl 301 rotary shaft is stretched out；Ratchet pawl 301 unidirectionally engages ratchet 8；Ratchet 8 and transmission shaft 6 are connection propeller boss connection, and ratchet 8 is located at The top of cam disc 12；Cam disc 12 is that spline is connect with transmission shaft 6；4 upside of locating ring is stretched out in the outer end that second level suppresses bar 10 The location hole 4-1 in face is simultaneously connected by screw to and suppresses block 7, and location hole 4-1 is through-hole；Locating ring 4 is located at the top of positioning disk 11； It suppresses that open up the position of location hole 4-1 on block 7 and locating ring 4 corresponding, is correspondingly arranged one at each location hole 4-1 and suppresses block 7, it each suppresses block 7 and is connected by screw in the sealing inner ring indent circle 5-1 of sealing inner ring 5.

The encapsulating method of uniformly distributed ring pressure type sealing valve of the invention, includes the following steps:

Transmission shaft 6 is driven to rotate by valve hand 1, driving cam disc 12 rotates synchronously when transmission shaft 6 rotates, and 12 turns of cam disc During dynamic, the working face of each cam end 12-1 drives corresponding second level to suppress bar 10 and synchronize along the radial direction of cam disc and is moved out Dynamic, second level, which suppresses to push when bar 10 is moved radially outwards, suppresses the sealing inner ring indent circle 5-1 that block 7 is synchronized to sealing inner ring 5 Force, so that the outer flange collar 5-2 of the sealing inner ring of sealing inner ring 5 is close to the sealed outer ring indent circle 13-1 of sealed outer ring 13, it is real Now seal the sealing between inner ring 5 and sealed outer ring 13, in 6 rotation process of transmission shaft, the intermittent motion mechanism of unidirectional drive It one-directionally rotates transmission shaft 6 and cam disc 12 is driven to rotate.

When sealing valve needs depressurization, ratchet pawl 301 is directly stirred at opening 2-1 and is engaged with the removal of ratchet 8, just State when second level can be made to suppress bar 10, sealing inner ring 5, the recovery of cam disc 12 to unsealing, makes sealing valve depressurization.

The working principle of the present apparatus is:

By rotating valve hand 1, so that rotating drive shaft 6 makes unidirectional detent under the action of ratchet pawl 301 of ratchet 8 respectively, During rotation, cam end 12-1 gradually pushes up idler wheel 14 to cam disc 12, and second level is made to suppress to push up to act on outside bar 10 and suppress block 7, Six equal portions uniform rings are pressed on sealing inner ring and mutually fit closely with the indent circle of sealed outer ring, realize sealing.

The present invention is mutually fitted closely by rotation valve hand to the final indent circle for realizing sealing inner ring and sealed outer ring, can Realize that effectively engaging rod piece realizes sealing；It is with cheap, and theory structure is simple, and low to environmental requirement, sealing effect is good The advantages of.

Claims

1. uniformly distributed ring pressure type sealing valve, which is characterized in that including positioning disk (11), sealed outer ring (13), suppress block (7) and sealing Inner ring (5), the axis rotation of positioning disk (11) are connected with transmission shaft (6), and being equipped on transmission shaft (6) can be with transmission shaft (6) The cam disc (12) of synchronous rotation, several cam ends (12-1), each cam end is distributed in central symmetry on cam disc (12) Contact is equipped with drive rod on the working face of (12-1), and drive rod is arranged radially along cam disc (12), and positioning disk (11), which is equipped with, is Drive rod carries out the guiding device of radially-directed, and the inner end of each drive rod contacts with the working face (12-1-1) of cam end and sets It sets, block (7) are suppressed in outer end connection, are suppressed block (7) and are connect with the sealing inner ring indent circle (5-1) for sealing inner ring (5), and inner ring is sealed (5) the outer flange collar (5-2) of sealing inner ring and the sealed outer ring indent circle (13-1) of sealed outer ring (13) fit, positioning disk (11) It is connect between transmission shaft (6) by the intermittent motion mechanism of unidirectional drive.

2. uniformly distributed ring pressure type sealing valve according to claim 1, which is characterized in that the outer end of the drive rod is equipped with and is used for The locating ring (4) positioned to all drive rods, locating ring (4) are fixedly connected with guiding device or positioning disk (11), positioning The location hole (4-1) of the outer end stretching for drive rod is offered on circle (4).

3. uniformly distributed ring pressure type sealing valve according to claim 1, which is characterized in that the intermittent movement machine of the unidirectional drive Structure is ratchet and pawl arrangement.

4. uniformly distributed ring pressure type sealing valve according to claim 3, which is characterized in that the ratchet and pawl arrangement includes setting In the ratchet pawl (301) on positioning disk (11) or guiding device and the ratchet (8) being arranged on transmission shaft (6), ratchet pawl (301) It is arranged in position compatible with ratchet (8).

5. uniformly distributed ring pressure type sealing valve according to claim 4, which is characterized in that connected on the transmission shaft (6) useful In the valve hand (1) of driving transmission shaft (6) rotation, valve hand (1) is installed on top cover (2), and top cover (2) passes through filling adhesives In sealing inner ring (5) side, offer opening (2-1) on top cover (2), opening (2-1) be arranged ratchet pawl (301) just on Side.

6. uniformly distributed ring pressure type sealing valve according to claim 1, which is characterized in that the guiding device is position-arresting disk (9), Position-arresting disk (9) is fixedly connected with positioning disk (11), and position-arresting disk (9) radially opens up the guide groove (9- of promising drive rod guiding 1), the intermediate position setting of drive rod is in guide groove (9-1).

7. uniformly distributed ring pressure type sealing valve according to claim 6, which is characterized in that the inner end of the drive rod is equipped with idler wheel (14), idler wheel (14) is contacted with the working face (12-1-1) of cam end (12-1).

8. according to claim 1, uniformly distributed ring pressure type sealing valve described in 6 or 7, which is characterized in that the drive rod is second level bullet Compression bar (10).

9. uniformly distributed ring pressure type sealing valve according to claim 1, which is characterized in that central symmetry on the cam disc (12) There are six cam end (12-1) for distribution.

10. the encapsulating method carried out by uniformly distributed ring pressure type sealing valve described in claim 1, which is characterized in that including as follows Step:

Transmission shaft (6) rotation is driven, driving cam disc (12) rotates synchronously when transmission shaft (6) rotates, and cam disc (12) rotated Cheng Zhong, the working face of each cam end (12-1) drive corresponding drive rod to synchronize along the radial direction of cam disc and are displaced outwardly, transmission It is pushed when bar is moved radially outwards and suppresses sealing inner ring indent circle (5-1) force that block (7) is synchronized to sealing inner ring (5), made The outer flange collar (5-2) of sealing inner ring that inner ring (5) must be sealed is close to the sealed outer ring indent circle (13-1) of sealed outer ring (13), real The sealing between inner ring (5) and sealed outer ring (13) is now sealed, in transmission shaft (6) rotation process, the interval of unidirectional drive is transported Motivation structure one-directionally rotates transmission shaft (6) and cam disc (12) is driven to rotate.