CN209540054U

CN209540054U - A kind of new plug-in high-pressure pneumatic reversal valve

Info

Publication number: CN209540054U
Application number: CN201920059056.2U
Authority: CN
Inventors: 沈树海
Original assignee: Dongguan Bo Ding Precision Machinery Manufacturing Co Ltd
Current assignee: Dongguan Bo Ding Precision Machinery Manufacturing Co Ltd
Priority date: 2019-01-14
Filing date: 2019-01-14
Publication date: 2019-10-25
Anticipated expiration: 2029-01-14

Abstract

The utility model discloses a kind of new plug-in high-pressure pneumatic reversal valve, it includes pedestal, the valve body being installed in pedestal inner cavity, the valve seat being installed in valve body and slide-valve core model group and valve rod, the first, second seal chamber is equipped in valve body, valve body periphery is equipped with the first, second through-hole for being respectively communicated with the first, second seal chamber, first, second oil gas mouth of pedestal setting is respectively communicated with the first, second through-hole, slide-valve core model group and valve seat are respectively arranged in the first, second seal chamber, and valve seat is equipped with the main channel of the first, second seal chamber of connection；Slide-valve core model group includes the sliding valve core being installed in first annular seal space, the primary seal block being installed in sliding valve core and the second spring for being sheathed on the first spring of sliding valve core front end periphery and being installed in sliding valve core, end in contact before first spring rear end and valve seat, valve rod is fixedly connected with the sliding valve core front end, and contacted with second spring, make to be formed with the first interval between primary seal block and valve rod.

Description

A kind of new plug-in high-pressure pneumatic reversal valve

Technical field:

The utility model relates to control valve technical fields, refer in particular to a kind of new plug-in high-pressure pneumatic reversal valve.

Background technique:

There is the energy to be facilitated, is cleanliness without any pollution, low cost, easy because its working media is compressed air for pneumatics The advantages that operation and be widely used in agricultural machinery, automatic industrial, communications and transportation, the energy, chemical industry, aerospace, navigation, state The fields such as anti-military affairs.

Conventional high-pressure pneumatic reversal valve generally comprises: pedestal, is installed on the valve body at the valve body being installed in pedestal inner cavity In valve seat and sliding valve core and be installed in the valve body and the valve rod for driving the sliding valve core to be bonded the valve seat, the valve It is provided with the first, second seal chamber in vivo, which, which is provided with, is respectively communicated with the first, second of the first, second seal chamber Through-hole, the first oil gas mouth and the second oil gas mouth being arranged on the pedestal are respectively communicated with first through hole and the second through-hole, and the sliding Spool and valve seat are respectively arranged in the first annular seal space and the second seal chamber, the valve seat be provided be connected to the first annular seal space and The main channel of second seal chamber is fixedly installed sealing block on the sliding valve core, which is also fixedly connected with valve rod, when After pushing the valve rod, the entire sliding valve core in valve rod front end and sealing block are mobile towards valve seat direction, until sealing block fitting should Valve seat, and the main channel is blocked and is completely cut off, completely cut off the first, second seal chamber, conversely, it is connected to the first, second seal chamber, with This realizes the flow direction of control gas, controls the conducting and isolation of the first oil gas mouth and the second oil gas mouth, to reach on-off commutation Purpose.

Since above-mentioned valve rod and sealing block use rigid attachment, i.e. valve rod and sealing block directly connects a kind of whole Body, in valve rod stress, valve rod can be offset, and caused sealing block and valve base sealing to be bonded bad and make seal failure, be will affect Commutate effect.

In view of this, present inventors have proposed following technical schemes.

Utility model content:

The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of new plug-in high-pressure pneumatic commutation Valve.

In order to solve the above-mentioned technical problem, the utility model uses following technical proposals: the new plug-in high pressure gas Dynamic reversal valve include: pedestal, the valve body being installed in pedestal inner cavity, the valve seat being installed in the valve body and slide-valve core model group with And it is installed on the valve rod in the valve body and for driving the slide-valve core model group to be bonded the valve seat, it is close to be provided with first in the valve body Seal chamber and the second seal chamber, which is provided with the first through hole for being respectively communicated with first annular seal space and the second seal chamber and the Two through-holes are provided with the first oil gas mouth and the second oil gas mouth on the pedestal, and first oil gas mouth and the second oil gas mouth are respectively communicated with First through hole and the second through-hole, and the slide-valve core model group and valve seat are respectively arranged at the first annular seal space and the second seal chamber In, which is provided with the main channel of connection first annular seal space and the second seal chamber, which is bonded the valve seat Afterwards, which can be blocked and is completely cut off；The slide-valve core model group include the sliding valve core being installed in the first annular seal space, It is installed in sliding valve core and protrudes out the outer primary seal block with for blocking main channel of the sliding valve core and be sheathed on the sliding First spring of spool front end periphery and it is installed on second spring in the sliding valve core and with end in contact after the primary seal block, End in contact before first spring rear end and valve seat, the valve rod are fixedly connected with the sliding valve core front end, and before the second spring End and valve stem contacts, which protrudes from outside the sliding valve core under the elastic force effect of second spring, and the primary seal block The first interval is formed between valve rod.

Furthermore, in above-mentioned technical proposal, an installation cavity is provided in the sliding valve core, and after the sliding valve core End is provided with the window through the installation cavity；The valve rod rear end and second spring, primary seal block are mounted in the installation cavity, And the primary seal block rear end passes through the window and protrudes out outside the sliding valve core.

Furthermore, in above-mentioned technical proposal, the sliding valve core inwardly offers at least one perforation along its outer wall First stomata of the installation cavity, first stomata are connected to the first annular seal space and the first interval.

Furthermore, in above-mentioned technical proposal, sliding valve core front end periphery is provided with for first spring pocket If the first ladder position；The valve seat rear perpheral is provided with the second ladder position being arranged for first spring.

Furthermore, in above-mentioned technical proposal, the base internal wall between the first oil gas mouth and the second oil gas mouth and The first O-ring, the second O-ring and third O-ring are respectively arranged on the outside of first oil gas mouth and the second oil gas mouth, wherein this Third seal chamber is formed between one O-ring, the second O-ring and the base internal wall and valve outer wall, which is connected to institute State the first oil gas mouth, first through hole and first annular seal space；First O-ring, third O-ring and the base internal wall and valve outer wall Between form the 4th seal chamber, the 4th seal chamber is connected to second oil gas mouth, the second through-hole and the second seal chamber.

Furthermore, in above-mentioned technical proposal, the valve rod is arranged in the valve body by guide ring, is pacified on the valve body Equipped with the baffle for being defined in guide ring in the valve body, hole retaining ring is provided between the baffle and the valve body, the valve rod It is provided with the 4th O-ring between periphery and valve body, which protrudes into the first annular seal space and connect with sliding valve core.

After adopting the above technical scheme, the utility model has the following beneficial effects: compared with prior art

1, when the utility model is used, when valve rod does not have stress, which acts in the elastic force of the first spring It is lower to be separated with valve seat, at this point, the main channel in the valve seat is connected to the first annular seal space and the second seal chamber, i.e. the first annular seal space It is interconnected with the second seal chamber；In valve rod stress, which pushes slide-valve core model group mobile towards valve seat direction, the sliding Sliding valve core and primary seal block in spool mould group is mobile towards valve seat direction, until the primary seal block is contacted with valve seat, at this point, The primary seal block is made first close by being bonded with valve seat to block the main channel by the effect of compressed second spring elastic force is lower Chamber and the isolation of the second seal chamber are sealed, the conducting and isolation of the first oil gas mouth and the second oil gas mouth are controlled, to reach on-off commutation Purpose.The primary seal block and valve rod are flexible contact to be realized by second spring, and primary seal block is by by compressed the The effect of two spring forces is lower to be bonded to block the main channel with valve seat, is not influenced by the thrust of valve rod, even if the valve rod generates Offset will not influence the airtightness that primary seal block is bonded with valve seat, guarantee primary seal block and the closed reliability being bonded of valve seat, Guarantee work quality, enables the utility model that there is the extremely strong market competitiveness.

2, the sliding valve core inwardly offers at least one first stomata for penetrating through the installation cavity along its outer wall, this One stomata is connected to the first annular seal space and the first interval.When primary seal block passes through by under the effect of compressed second spring elastic force When be bonded with valve seat to block the main channel, the high pressure gas in first annular seal space can enter the first interval along first stomata, It forces the primary seal block to push out to generate pressure, that is, increases the adhesive force of primary seal block and valve seat 3, be further ensured that master is close Seal block and the closed reliability being bonded of valve seat.

Detailed description of the invention:

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the usage state diagram of the utility model.

Specific embodiment:

The present invention will be further described with attached drawing combined with specific embodiments below.

As shown in FIGS. 1 and 2 being a kind of new plug-in high-pressure pneumatic reversal valve comprising: pedestal 1 is installed in pedestal 1 It valve body 2 in chamber, the valve seat 3 being installed in the valve body 2 and slide-valve core model group 4 and is installed in the valve body 2 and for driving The valve rod 5 that the slide-valve core model group 4 is bonded the valve seat 3 is moved, is provided with first annular seal space 21 and the second seal chamber in the valve body 2 22, which is provided with the first through hole 23 and the second through-hole for being respectively communicated with first annular seal space 21 and the second seal chamber 22 24, the first oil gas mouth 11 and the second oil gas mouth 12 are provided on the pedestal 1, first oil gas mouth 11 and the second oil gas mouth 12 difference It is connected to first through hole 23 and the second through-hole 24, and the slide-valve core model group 4 and valve seat 3 are respectively arranged at 21 He of first annular seal space In second seal chamber 22, which is provided with the main channel 31 of connection first annular seal space 21 and the second seal chamber 22, the sliding After spool mould group 4 is bonded the valve seat 3, which can be blocked and be completely cut off, the flow direction of control gas is realized with this, reaches on-off The purpose of commutation.

The slide-valve core model group 4 includes the sliding valve core 41 being installed in the first annular seal space 21, is installed on sliding In spool 41 and protrudes out the outer primary seal block 42 with for blocking main channel 31 of the sliding valve core 41 and be sheathed on the slide-valve First spring 43 of 41 front end of core periphery and be installed in the sliding valve core 41 and with end in contact after the primary seal block 42 End in contact before two springs 44,43 rear end of the first spring and valve seat 3, the valve rod 5 are fixedly connected with 41 front end of sliding valve core, And 44 front end of second spring is contacted with valve rod 5, which protrudes from the cunning under the elastic force effect of second spring 44 Outside movable valve plug 41, and the first interval is formed between the primary seal block 42 and valve rod 5.When the utility model is used, in valve rod 5 When not having stress, which is separated under the elastic force effect of the first spring 43 with valve seat 3, at this point, the master in the valve seat 3 Channel 31 is connected to the first annular seal space 21 and the second seal chamber 22, the i.e. first annular seal space 21 are mutually interconnected with the second seal chamber 22 It is logical；In 5 stress of valve rod, which pushes slide-valve core model group 4 mobile towards 3 direction of valve seat, in the slide-valve core model group 4 Sliding valve core 41 and primary seal block 42 are mobile towards 3 direction of valve seat, until the primary seal block 42 is contacted with valve seat 3, at this point, the master Sealing block 42 is to make the by being bonded with valve seat 3 to block the main channel 31 by the effect of compressed 44 elastic force of second spring is lower One seal chamber 21 and the isolation of the second seal chamber 22, control the conducting and isolation of the first oil gas mouth and the second oil gas mouth, to reach logical The purpose of disconnected commutation.The primary seal block 42 and valve rod 5 are to realize flexible contact by second spring 44, and primary seal block 42 is logical It crosses and is bonded under the effect of compressed 44 elastic force of second spring with valve seat 3 to block the main channel 31, not by the thrust of valve rod 5 It influences, even if the valve rod 5 generates offset, the airtightness that primary seal block 42 is bonded with valve seat 3 will not be influenced, guarantee primary seal block 42 enable the utility model have the extremely strong market competitiveness with the closed reliability being bonded of valve seat 3, guarantee work quality.

An installation cavity 411 is provided in the sliding valve core 41, and 41 rear end of sliding valve core is provided with through the installation The window 412 of chamber 411；5 rear end of valve rod and second spring 44, primary seal block 42 are mounted in the installation cavity 411, and should 42 rear end of primary seal block passes through the window 412 and protrudes out outside the sliding valve core 41.Second spring 44 is placed in 5 rear end of valve rod and master Between sealing block 42, which passes through the window 412 under the elastic force effect of second spring 44 and protrudes out this Outside sliding valve core 41.

The sliding valve core 41 inwardly offers at least one first stomata for penetrating through the installation cavity 411 along its outer wall 413, which is connected to the first annular seal space 21 and the first interval.When primary seal block 42 passes through by compressed The effect of two springs, 44 elastic force is lower when being bonded with valve seat 3 to block the main channel 31, and the high pressure gas in first annular seal space 21 can be along First stomata 413 enters the first interval, forces the primary seal block 42 to push out to generate pressure, i.e. increase primary seal block 42 With the adhesive force of valve seat 3, it is further ensured that primary seal block 42 and the closed reliability being bonded of valve seat 3.

The 41 front end periphery of sliding valve core is provided with the first ladder position being arranged for first spring 43；The valve seat 3 Rear perpheral is provided with the second ladder position being arranged for first spring 43, guarantees that the first spring 43 is stable with this and is installed on Between sliding valve core 41 and valve seat 3.

1 inner wall of pedestal is between the first oil gas mouth 11 and the second oil gas mouth 12 and the first oil gas mouth 11 and the second oil gas Mouthfuls 12 outsides are respectively arranged with the first O-ring 13, the second O-ring 14 and third O-ring 15, wherein first O-ring 13, the Third seal chamber, third seal chamber connection described first are formed between two O-rings 14 and 2 outer wall of 1 inner wall of pedestal and valve body Oil gas mouth 11, first through hole 23 and first annular seal space 21；First O-ring 13, third O-ring 15 and 1 inner wall of pedestal and valve The 4th seal chamber is formed between 2 outer wall of body, it is close that the 4th seal chamber is connected to second oil gas mouth 12, the second through-hole 24 and second Seal chamber 22.

The valve rod 5 is arranged in the valve body 2 by guide ring 52, is equipped on the valve body 2 for limiting guide ring 52 Baffle 53 in the valve body 2 is provided with hole retaining ring 54 between the baffle 53 and the valve body 2,5 periphery of valve rod and valve body The 4th O-ring 55 is provided between 2, which protrudes into the first annular seal space 21 and connect with sliding valve core 41.

In conclusion when the utility model is used, the sliding valve core 41 is in the first spring when valve rod 5 does not have stress 43 elastic force effect is lower to be separated with valve seat 3, at this point, connection first annular seal space 21 and second of main channel 31 in the valve seat 3 is close Chamber 22 is sealed, i.e. first annular seal space 21 and the second seal chamber 22 is interconnected；In 5 stress of valve rod, which pushes slide-valve Core model group 4 is mobile towards 3 direction of valve seat, and the sliding valve core 41 and primary seal block 42 in the slide-valve core model group 4 are towards 3 direction of valve seat It is mobile, until the primary seal block 42 is contacted with valve seat 3, at this point, the primary seal block 42 is by by compressed second spring 44 Elastic force effect is lower be bonded to block the main channel 31 with valve seat 3, and first annular seal space 21 and the isolation of the second seal chamber 22 are made, and controls the The conducting and isolation of one oil gas mouth and the second oil gas mouth, to achieve the purpose that on-off commutates.The primary seal block 42 and valve rod 5 are logical It crosses second spring 44 and realizes flexible contact, and primary seal block 42 is by acting on lower and valve by compressed 44 elastic force of second spring 3 fitting of seat is not influenced by the thrust of valve rod 5 to block the main channel 31, even if the valve rod 5 generates offset, will not be influenced The airtightness that primary seal block 42 is bonded with valve seat 3 guarantees primary seal block 42 and the closed reliability being bonded of valve seat 3, guarantees work Quality enables the utility model have the extremely strong market competitiveness.

It certainly, is not to limit the utility model and implement the foregoing is merely specific embodiment of the utility model Range, all equivalent change or modifications done according to structure, feature and principle described in present utility model application the scope of the patents, should all wrap It includes in present utility model application the scope of the patents.

Claims

1. a kind of new plug-in high-pressure pneumatic reversal valve comprising: pedestal (1), the valve body being installed in pedestal (1) inner cavity (2), it the valve seat (3) and slide-valve core model group (4) that are installed in the valve body (2) and is installed in the valve body (2) and for driving The valve rod (5) that the slide-valve core model group (4) is bonded the valve seat (3) is moved, first annular seal space (21) and the are provided in the valve body (2) Two seal chambers (22), which, which is provided with, is respectively communicated with the first of first annular seal space (21) and the second seal chamber (22) Through-hole (23) and the second through-hole (24) are provided with the first oil gas mouth (11) and the second oil gas mouth (12) on the pedestal (1), this first Oil gas mouth (11) and the second oil gas mouth (12) are respectively communicated with first through hole (23) and the second through-hole (24), and the slide-valve core model group (4) it is respectively arranged in the first annular seal space (21) and the second seal chamber (22) with valve seat (3), which is provided with connection The main channel (31) of the first annular seal space (21) and the second seal chamber (22), the slide-valve core model group (4) are bonded the valve seat (3) Afterwards, which can be blocked and is completely cut off；

It is characterized by: the slide-valve core model group (4) includes the sliding valve core being installed in the first annular seal space (21) (41), it is installed in sliding valve core (41) and protrudes out the sliding valve core (41) outside with the primary seal for blocking main channel (31) It block (42) and is sheathed on the first spring (43) of sliding valve core (41) front end periphery and is installed in the sliding valve core (41) And the second spring (44) with the primary seal block (42) end in contact afterwards, end in contact before the first spring (43) rear end and valve seat (3), The valve rod (5) is fixedly connected with sliding valve core (41) front end, and second spring (44) front end is contacted with valve rod (5), should Primary seal block (42) protrudes from the sliding valve core (41) outside under the elastic force effect of second spring (44), and the primary seal block (42) The first interval is formed between valve rod (5).

2. a kind of new plug-in high-pressure pneumatic reversal valve according to claim 1, it is characterised in that: the sliding valve core (41) it is provided in an installation cavity (411), and sliding valve core (41) rear end is provided with the window through the installation cavity (411) (412)；Valve rod (5) rear end and second spring (44), primary seal block (42) are mounted in the installation cavity (411), and should Primary seal block (42) rear end passes through the window (412) and protrudes out the sliding valve core (41) outside.

3. a kind of new plug-in high-pressure pneumatic reversal valve according to claim 2, it is characterised in that: the sliding valve core (41) at least one first stomata (413) for penetrating through the installation cavity (411), first stomata are inwardly offered along its outer wall (413) first annular seal space (21) and the first interval are connected to.

4. a kind of new plug-in high-pressure pneumatic reversal valve according to claim 1 to 3, it is characterised in that: institute It states sliding valve core (41) front end periphery and is provided with the first ladder position being arranged for first spring (43)；Valve seat (3) rear end Periphery is provided with the second ladder position being arranged for first spring (43).

5. a kind of new plug-in high-pressure pneumatic reversal valve according to claim 1, it is characterised in that: the pedestal (1) Inner wall is between the first oil gas mouth (11) and the second oil gas mouth (12) and on the outside of the first oil gas mouth (11) and the second oil gas mouth (12) It is respectively arranged with the first O-ring (13), the second O-ring (14) and third O-ring (15), wherein first O-ring (13), Third seal chamber is formed between two O-rings (14) and pedestal (1) inner wall and valve body (2) outer wall, which is connected to institute State the first oil gas mouth (11), first through hole (23) and first annular seal space (21)；First O-ring (13), third O-ring (15) and The 4th seal chamber is formed between pedestal (1) inner wall and valve body (2) outer wall, the 4th seal chamber is connected to second oil gas mouth (12), the second through-hole (24) and the second seal chamber (22).

6. a kind of new plug-in high-pressure pneumatic reversal valve according to claim 4, it is characterised in that: the valve rod (5) It is arranged in the valve body (2), is equipped on the valve body (2) for guide ring (52) to be defined in the valve body by guide ring (52) (2) baffle (53) in is provided with hole retaining ring (54) between the baffle (53) and the valve body (2), the valve rod (5) periphery and valve The 4th O-ring (55) is provided between body (2), which protrudes into the first annular seal space (21) and and sliding valve core (41) it connects.