CN205047868U - A two valves for middle and low voltage pipeline - Google Patents
A two valves for middle and low voltage pipeline Download PDFInfo
- Publication number
- CN205047868U CN205047868U CN201520789919.3U CN201520789919U CN205047868U CN 205047868 U CN205047868 U CN 205047868U CN 201520789919 U CN201520789919 U CN 201520789919U CN 205047868 U CN205047868 U CN 205047868U
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- valve
- cavity
- spool
- valve rod
- seal
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Abstract
The utility model discloses a two valves for middle and low voltage pipeline, it realizes through two cases that the second grade is sealed. The utility model discloses in, the copper disk seat is installed with the terminal cohesive position of entry to the cavity inner wall, and the tetrafluoro disk seat is installed to the cavity inner wall of copper disk seat top, the export end is located tetrafluoro disk seat top, still contain and be used for second case and first case, the bottom fixed connection of first case and interior valve rod, the bottom fixed connection of second case and outer valve rod, interior valve rod slidable mounting is outside in the valve rod, the top of interior valve rod is provided with the spring, and the top of spring is provided with the spring spindle, and the spring spindle extends to outer valve rod top via outer valve rod is inside, and the spring spindle top is greater than the flange of interior valve rod for radial dimension, the inside still equipment of cavity has the trapezoidal thread pole with the top flange surface contact of spring spindle, the trapezoidal thread pole passes through handle driving and removes along axial direction.
Description
Technical field
The utility model relates to low temperature mesolow pipeline valve in one, specifically for being assembled on the pipeline of low temperature mesolow medium in conveying, realizes the break-make of pipeline.
Background technique
Existing for carrying the valve on the pipeline of mesolow medium to comprise valve body, valve body both sides offer medium pipeline entrance and medium pipeline outlet respectively; Medium pipeline entrance is positioned at the end that the end of valve inner and medium pipeline outlet be positioned at valve inner and is respectively access end and outlet ends; The cavity connects that access end and outlet ends and valve body center vertical direction are offered;
In order to realize the opening and closing of the MEDIA FLOW circulation passage between medium pipeline entrance and medium pipeline outlet, current valve is primary seal, namely relies on a spool to open and close MEDIA FLOW circulation passage; For middle low temperature mesolow medium pipeline, if the valve of the type needs to realize open and close function very reliably, need to increase craft precision, material quality and sealing material grade, cost improves greatly thus.
Model utility content
Technical problem to be solved in the utility model is, for above-mentioned deficiency of the prior art, to provide a kind of Double-seal valve for mesolow pipeline, and it realizes secondary seal by two spools, seals reliable and is easy to realize.
In order to achieve the above object, the utility model is achieved by the following technical solutions:
For the Double-seal valve of mesolow pipeline, comprise valve body, valve body both sides offer medium pipeline entrance and medium pipeline outlet respectively; Medium pipeline entrance is positioned at the end that the end of valve inner and medium pipeline outlet be positioned at valve inner and is respectively access end and outlet ends; The cavity connects that access end and outlet ends and valve body center vertical direction are offered; It is characterized in that:
The cohesive position of described cavity inner wall and access end is provided with copper valve seat, and the cavity inner wall above copper valve seat is provided with tetrafluoro valve seat; Described outlet ends is positioned at above tetrafluoro valve seat;
Also comprise the second spool for sealing tetrafluoro valve seat and the first spool for sealed copper valve seat; First spool is fixedly connected with the bottom of inner valve stem; Second spool is fixedly connected with the bottom of outer valve rod; Inner valve stem is slidably installed outside in valve rod;
The top of described inner valve stem is provided with spring, and the top of spring is provided with spring spindle, and spring spindle extends to above outer valve rod via outer stem internal, and spring spindle top is the flange that radial dimension is greater than inner valve stem;
Described cavity inside is also assembled with the trapezoidal thread bar with the top end flange surface contact of spring spindle, and described trapezoidal thread bar is axially moved by lever drive.
Preferred implementation of the present utility model and further improvement as follows:
(1) also valve core housing is provided with between described outer valve rod and cavity inner wall; Valve core housing bottom is assembled in tetrafluoro valve seat top; Described first spool and the second spool slide along valve core housing inwall; Described outer valve stem tip extends to above valve core housing;
Described outer valve stem tip arranges valve stem casing; Described valve stem casing top arranges groove, the flange of described spring spindle and the sliding contact of groove cell wall; Described cavity inner wall, and the position be positioned at above valve stem casing is provided with the chock along cavity radial protrusion.
Further: the top groove inner wall of described valve stem casing is provided with connecting sleeve upper plate;
The cavity of described valve body is assembled with bearing on the inwall on top, and bearing inner race is fixedly connected with copper nut, and the top engagement of described trapezoidal thread bar is arranged in copper nut; Copper nut top extends to more than valve body top, and the top of copper nut fixedly mounts described handle;
Described valve body comprises the upper valve body and lower valve body that are connected by fastener assembly; Described fastener assembly comprises screw bolt and nut; Described valve core housing extends to the cavity of upper valve body via the cavity of lower valve body; Described first spool and inner valve stem one-body molded, described second spool and outer valve-stem integrated shaping.
Further: between described copper valve seat and tetrafluoro valve seat, be provided with lower seal graphite pads, the outer surface of described valve core housing is provided with the boss embedding cavity inner wall, and the cooperation position of this boss and cavity inner wall is provided with sealed graphite pad; Described valve core housing is provided with the seal boss along valve core housing radial protrusion near the position on top, and be filled with a sealing between valve core housing open top and seal boss filler; The position outer valve rod being positioned at valve core housing top is provided with filler pressing sleeve, on outer valve rod, is provided with hold-down grid above filler pressing sleeve;
Further: described upper sealed graphite pad and lower seal graphite pads are graphite pads; Described stuffing box packing is graphite packing; Also sealing rubber ring is provided with between described inner valve stem and outer valve rod.
Further: blind hole is offered on the top of described spring spindle, the opening of blind hole extends internally making block, and described trapezoidal thread bar offers a circle groove near the position of bottom, and the block of described blind hole embeds in groove.
(2) described medium pipeline entrance and medium pipeline export the internal thread offered for connecting media pipeline;
The center of described copper valve seat and tetrafluoro valve seat is the MEDIA FLOW through hole overlapped with the cavity of valve body; Described first spool is cylindrical shape, and described second spool is inverted pyramidal structures.
The utility model beneficial effect is:
The disclosed Double-seal valve for mesolow pipeline of the utility model, be provided with copper valve seat at the cohesive position of cavity inner wall and access end, the cavity inner wall above copper valve seat is provided with tetrafluoro valve seat; Also comprise the second spool for sealing tetrafluoro valve seat and the first spool for sealed copper valve seat; Thus, twice (secondary) sealing can be realized by the cooperation of two spools and two valve seats, the successful of twice sealing due to once sealing, and owing to being twice sealing, conventional manufacturing process can realize the sealing effect of high-reliability, is easy to realize;
In the utility model, the first spool is fixedly connected with the bottom of inner valve stem; Second spool is fixedly connected with the bottom of outer valve rod; Inner valve stem is slidably installed outside in valve rod; Moving up and down of two spools can move up and down realization by two valve rods, and two valve rods are mutual sheathing structure, very save space;
In the utility model, in the process of the downward pressing spring of spring spindle, the top end flange of spring spindle is used for pressing down outer valve rod mutually, and spring spindle bottom is used for pressing down inner valve stem; Second spool and tetrafluoro valve seat seal combination in advance, and follow-up continuation presses down, and the inner valve stem at center, fast by the sealing station of the first spool compacting copper valve seat, realizes secondary seal; Reliably secondary seal can be realized and the order that can realize two spools when spring return function reliably departs from by the effect of spring spindle and spring; Finally achieve the opening and closing of MEDIA FLOW circulation passage;
The utility model is also assembled with the trapezoidal thread bar with spring spindle tip contact at cavity inside, and described trapezoidal thread bar is axially moved by lever drive; Thus, handle with sleeve, manual allowing trapezoidal thread bar press down spring spindle or rise promotes the opening and closing that (or by spring reset) spring spindle realizes whole MEDIA FLOW circulation passage, very convenient, all component is assembled mutually, is convenient to the High-efficient Production of production line.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of a kind of embodiment of the present utility model;
Fig. 2 is the sectional structure schematic diagram of a kind of embodiment of the present utility model.
Description of reference numerals:
1-valve body, 2-copper valve seat, 3-lower seal graphite pads, 4-tetrafluoro valve seat, 5-first spool, 6-second spool, the outer valve rod of 7-, 8-valve core housing, the upper sealed graphite pad of 9-, 10-fastener assembly, 11-filler pressing sleeve, 12-hold-down grid, 13-valve stem casing, 14-inner valve stem, 15-handle, 16-copper nut, 17-trapezoidal thread bar, 18-chock, 19-valve stem casing upper plate, 20-spring spindle, 21-spring, 22-upper valve body, valve body under 23-, 24-medium pipeline entrance, 25-medium pipeline exports, 26-stuffing box packing, 27-bearing.
Embodiment
Below in conjunction with drawings and Examples, the utility model embodiment is described:
As depicted in figs. 1 and 2, it illustrates embodiment of the present utility model, the hint effect of Fig. 1 with Fig. 2 is identical, and in order to the Name & Location of clear expression all parts, Fig. 2 is the further mark on the basis of Fig. 1;
As shown in the figure, for the Double-seal valve of mesolow pipeline, comprise valve body 1, valve body 1 both sides offer medium pipeline entrance 24 and medium pipeline outlet 25 respectively; Medium pipeline entrance 24 is positioned at the ends that the end of valve body 1 inside and medium pipeline outlet 25 be positioned at valve body 1 inside and is respectively access end and outlet ends; The cavity connects that access end and outlet ends and valve body 1 center vertical direction are offered;
As shown in the figure, the cohesive position of described cavity inner wall and access end is provided with copper valve seat 2, and the cavity inner wall above copper valve seat 2 is provided with tetrafluoro valve seat 4; Described outlet ends is positioned at above tetrafluoro valve seat 4;
As shown in the figure, the second spool 6 for sealing tetrafluoro valve seat 4 and the first spool 5 for sealed copper valve seat 2 is also comprised; First spool 5 is fixedly connected with the bottom of inner valve stem 14; Second spool 6 is fixedly connected with the bottom of outer valve rod 7; Inner valve stem 14 is slidably installed outside in valve rod 7;
As shown in the figure, the top of described inner valve stem 14 is provided with spring 21, and the top of spring 21 is provided with spring spindle 20, and spring spindle 20 extends to above outer valve rod 7 via outer valve rod 7 inside, and spring spindle 20 top is the flange that radial dimension is greater than inner valve stem 14;
As shown in the figure, described cavity inside is also assembled with the trapezoidal thread bar 17 with the top end flange surface contact of spring spindle 20, and described trapezoidal thread bar 17 is driven by handle 15 and axially moves.
Preferably, as shown in the figure, valve core housing 8 is also provided with between described outer valve rod 7 and cavity inner wall; Valve core housing 8 bottom is assembled in tetrafluoro valve seat 4 top; Described first spool 5 and the second spool 6 slide along valve core housing 8 inwall; Described outer valve rod 7 top extends to above valve core housing 8; Arrange the better tightness that valve core housing makes total, structure is more stable;
As shown in the figure, described outer valve rod 7 top arranges valve stem casing 13; Described valve stem casing 13 top arranges groove, the flange of described spring spindle 20 and the sliding contact of groove cell wall; Described cavity inner wall, and the position be positioned at above valve stem casing 13 is provided with the chock 18 along cavity radial protrusion.Arranging valve stem casing can allow the assembling of spring spindle more reliable, and the drive connection between trapezoidal thread bar and spring spindle can realize reliably; By chock restriction valve rod sleeve to mobile position, make can reset reliably during spring return function, ensure that the unlatching completely when MEDIA FLOW circulation passage is opened, ensure flow velocity.
Preferably, as shown in the figure, the top groove inner wall of described valve stem casing 13 is provided with connecting sleeve upper plate 19; Connecting sleeve upper plate has further sealing and guide function;
As shown in the figure, the cavity of described valve body 1 is assembled with bearing 27 on the inwall on top, and bearing 27 inner ring is fixedly connected with copper nut 16, and the top engagement of described trapezoidal thread bar 17 is arranged in copper nut 16; Copper nut 16 top extends to more than valve body 1 top, and the top of copper nut 16 fixedly mounts described handle 15; Trapezoidal thread bar not easily loosens and centering is very good; Realized the drive mechanism of feed screw nut by copper nut, transmission process is very reliable.
As shown in the figure, described valve body 1 comprises the upper valve body 22 and lower valve body 23 that are connected by fastener assembly 10; Described fastener assembly 10 comprises screw bolt and nut; Described valve core housing 8 extends to the cavity of upper valve body 22 via the cavity of lower valve body 23; Described first spool 5 is one-body molded with inner valve stem 14, and described second spool 6 is one-body molded with outer valve rod 7.The assembling of upper valve body and lower valve body can make the maintenance of whole valve assembling more convenient, can safeguard, and efficiently can carry out the production of production line.
Preferably, as shown in the figure, be provided with lower seal graphite pads 3 between described copper valve seat 2 and tetrafluoro valve seat 4, the outer surface of described valve core housing 8 is provided with the boss embedding cavity inner wall, and the cooperation position of this boss and cavity inner wall is provided with sealed graphite pad 9; Described valve core housing 8 is provided with the seal boss along valve core housing 8 radial protrusion near the position on top, be filled with a sealing between valve core housing 8 open top and seal boss filler 26; The position outer valve rod 7 being positioned at valve core housing 8 top is provided with filler pressing sleeve 11, on outer valve rod 7, is provided with hold-down grid 12 above filler pressing sleeve 11;
Preferably, as shown in the figure, described upper sealed graphite pad 9 and lower seal graphite pads 3 are graphite pads; Described stuffing box packing 26 is graphite packing; Also sealing rubber ring is provided with between described inner valve stem 14 and outer valve rod 7.
Preferably, as shown in the figure, blind hole is offered on the top of described spring spindle 20, and the opening of blind hole extends internally making block, and described trapezoidal thread bar 17 offers a circle groove near the position of bottom, and the block of described blind hole embeds in groove.Thus, trapezoidal thread bar reliably can drive the lifting of spring spindle in lifting process, realizes opening and closing of whole MEDIA FLOW circulation passage.
Preferably, as shown in the figure, described medium pipeline entrance 24 and medium pipeline outlet 25 offer internal thread for connecting media pipeline;
The center of described copper valve seat 2 and tetrafluoro valve seat 4 is the MEDIA FLOW through hole overlapped with the cavity of valve body; Described first spool is cylindrical shape, and described second spool is inverted pyramidal structures.
In above-described embodiment of the present utility model:
(1) during valve closing:
Turn clockwise handle 15, and copper nut 16 turns clockwise, and trapezoidal thread bar 17 moves down, and spring spindle 20 moves down thereupon, and when spring 21 does not have pressurized, valve stem casing 13 is motionless.When spring 21 pressurized, valve stem casing 13, outer valve rod 7, inner valve stem 14 and the first spool 5, second spool 6 move down simultaneously.Outer valve rod 7 drives that the second spool 6 is descending to be contacted with tetrafluoro valve seat 4, realizes first order sealing.Be rotated further handle 15, spring 21 pressurized increases gradually, and the first spool 5 of inner valve stem 14 contacts with copper valve seat 2 rapidly, ceaselessly rotates realize second level sealing with handle 15.Form the closedown completely of valve.
(2) during valve opening:
Be rotated counterclockwise handle 15, copper nut 16 is rotated counterclockwise, and trapezoidal thread bar 17 moves up, before spring 21 does not leave pressurized, pressure medium effect under, first open the second spool 6.Open primary seal.Be rotated further handle 15, spring spindle 20 moves up thereupon, release elasticity, and equally under the effect of pressure medium, the first spool 5 speeds away valve seat 4, realizes the unlatching of second level sealing.Thus complete opening completely of valve.
By reference to the accompanying drawings the utility model preferred implementation is explained in detail above; but the utility model is not limited to above-mentioned mode of execution; in the ken that those of ordinary skill in the art possess; can also make a variety of changes under the prerequisite not departing from the utility model aim; these changes relate to correlation technique well-known to those skilled in the art, and these all fall into the protection domain of the utility model patent.
Do not depart from design of the present utility model and scope can make many other and change and remodeling.
Should be appreciated that the utility model is not limited to specific mode of execution, scope of the present utility model is defined by the following claims.
Claims (7)
1. for the Double-seal valve of mesolow pipeline, comprise valve body, valve body both sides offer medium pipeline entrance and medium pipeline outlet respectively; Medium pipeline entrance is positioned at the end that the end of valve inner and medium pipeline outlet be positioned at valve inner and is respectively access end and outlet ends; The cavity connects that access end and outlet ends and valve body center vertical direction are offered; It is characterized in that:
The cohesive position of described cavity inner wall and access end is provided with copper valve seat, and the cavity inner wall above copper valve seat is provided with tetrafluoro valve seat; Described outlet ends is positioned at above tetrafluoro valve seat;
Also comprise the second spool for sealing tetrafluoro valve seat and the first spool for sealed copper valve seat; First spool is fixedly connected with the bottom of inner valve stem; Second spool is fixedly connected with the bottom of outer valve rod; Inner valve stem is slidably installed outside in valve rod;
The top of described inner valve stem is provided with spring, and the top of spring is provided with spring spindle, and spring spindle extends to above outer valve rod via outer stem internal, and spring spindle top is the flange that radial dimension is greater than inner valve stem;
Described cavity inside is also assembled with the trapezoidal thread bar with the top end flange surface contact of spring spindle, and described trapezoidal thread bar is axially moved by lever drive.
2., as claimed in claim 1 for the Double-seal valve of mesolow pipeline, it is characterized in that: between described outer valve rod and cavity inner wall, be also provided with valve core housing; Valve core housing bottom is assembled in tetrafluoro valve seat top; Described first spool and the second spool slide along valve core housing inwall; Described outer valve stem tip extends to above valve core housing;
Described outer valve stem tip arranges valve stem casing; Described valve stem casing top arranges groove, the flange of described spring spindle and the sliding contact of groove cell wall; Described cavity inner wall, and the position be positioned at above valve stem casing is provided with the chock along cavity radial protrusion.
3., as claimed in claim 2 for the Double-seal valve of mesolow pipeline, it is characterized in that: the top groove inner wall of described valve stem casing is provided with connecting sleeve upper plate;
The cavity of described valve body is assembled with bearing on the inwall on top, and bearing inner race is fixedly connected with copper nut, and the top engagement of described trapezoidal thread bar is arranged in copper nut; Copper nut top extends to more than valve body top, and the top of copper nut fixedly mounts described handle;
Described valve body comprises the upper valve body and lower valve body that are connected by fastener assembly; Described fastener assembly comprises screw bolt and nut; Described valve core housing extends to the cavity of upper valve body via the cavity of lower valve body; Described first spool and inner valve stem one-body molded, described second spool and outer valve-stem integrated shaping.
4. as claimed in claim 2 for the Double-seal valve of mesolow pipeline, it is characterized in that: between described copper valve seat and tetrafluoro valve seat, be provided with lower seal graphite pads, the outer surface of described valve core housing is provided with the boss embedding cavity inner wall, and the cooperation position of this boss and cavity inner wall is provided with sealed graphite pad; Described valve core housing is provided with the seal boss along valve core housing radial protrusion near the position on top, and be filled with a sealing between valve core housing open top and seal boss filler; The position outer valve rod being positioned at valve core housing top is provided with filler pressing sleeve, on outer valve rod, is provided with hold-down grid above filler pressing sleeve.
5., as claimed in claim 4 for the Double-seal valve of mesolow pipeline, it is characterized in that: described upper sealed graphite pad and lower seal graphite pads are graphite pads; Described stuffing box packing is graphite packing; Also sealing rubber ring is provided with between described inner valve stem and outer valve rod.
6. as claimed in claim 2 for the Double-seal valve of mesolow pipeline, it is characterized in that: blind hole is offered on the top of described spring spindle, the opening of blind hole extends internally making block, and described trapezoidal thread bar offers a circle groove near the position of bottom, and the block of described blind hole embeds in groove.
7. the Double-seal valve for mesolow pipeline as described in as arbitrary in claim 1 ~ 6, is characterized in that: described medium pipeline entrance and medium pipeline outlet offer the internal thread for connecting media pipeline;
The center of described copper valve seat and tetrafluoro valve seat is the MEDIA FLOW through hole overlapped with the cavity of valve body; Described first spool is cylindrical shape, and described second spool is inverted pyramidal structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520789919.3U CN205047868U (en) | 2015-10-14 | 2015-10-14 | A two valves for middle and low voltage pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520789919.3U CN205047868U (en) | 2015-10-14 | 2015-10-14 | A two valves for middle and low voltage pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205047868U true CN205047868U (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520789919.3U Expired - Fee Related CN205047868U (en) | 2015-10-14 | 2015-10-14 | A two valves for middle and low voltage pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205047868U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837960A (en) * | 2018-06-27 | 2018-11-20 | 杭州福路涂装设备有限公司 | A kind of high-pressure airless electrostatic gun structure |
| CN109139943A (en) * | 2018-11-02 | 2019-01-04 | 徐国华 | A kind of band displacement micromatic setting regulating valve |
| CN109838564A (en) * | 2019-03-28 | 2019-06-04 | 西峡龙成特种材料有限公司 | A kind of double containment high-temperature sealing valve and high-temperature combustible gas transportation system |
-
2015
- 2015-10-14 CN CN201520789919.3U patent/CN205047868U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837960A (en) * | 2018-06-27 | 2018-11-20 | 杭州福路涂装设备有限公司 | A kind of high-pressure airless electrostatic gun structure |
| CN109139943A (en) * | 2018-11-02 | 2019-01-04 | 徐国华 | A kind of band displacement micromatic setting regulating valve |
| CN109838564A (en) * | 2019-03-28 | 2019-06-04 | 西峡龙成特种材料有限公司 | A kind of double containment high-temperature sealing valve and high-temperature combustible gas transportation system |
| CN109838564B (en) * | 2019-03-28 | 2024-05-03 | 西峡龙成特种材料有限公司 | Double-seal high-temperature sealing valve and high-temperature combustible gas conveying system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20201014 |