CN203532923U - Straight-stroke pneumatic actuator with top-mounted hand wheel mechanism - Google Patents
Straight-stroke pneumatic actuator with top-mounted hand wheel mechanism Download PDFInfo
- Publication number
- CN203532923U CN203532923U CN201320661666.2U CN201320661666U CN203532923U CN 203532923 U CN203532923 U CN 203532923U CN 201320661666 U CN201320661666 U CN 201320661666U CN 203532923 U CN203532923 U CN 203532923U
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- Prior art keywords
- nut
- screw rod
- sealing seat
- handwheel
- fixed
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 claims abstract description 24
- 210000004712 air sac Anatomy 0.000 claims description 15
- 244000144985 peep Species 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 abstract 1
- 239000010408 film Substances 0.000 description 9
- 230000007423 decrease Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- Mechanically-Actuated Valves (AREA)
- Transmission Devices (AREA)
Abstract
The utility model provides a straight-stroke pneumatic actuator with a top-mounted hand wheel mechanism. The straight-stroke pneumatic actuator comprises a pneumatic shell, a pneumatic film, a push rod, a screw rod, a hand wheel, a fixed nut, an observation cover, a positioning and sealing seat and a push nut, wherein the screw rod, the hand wheel, the fixed nut, the observation cover, the positioning and sealing seat and the push nut are installed on the upper portion of the pneumatic shell; the positioning and sealing seat is fixed to the inner wall of the pneumatic shell in a sealed mode; the lower portion of the screw rod coaxially extends into the positioning and sealing seat in a sliding and sealed mode; the fixed nut is fixed on the upper portion of the observation cover; the hand wheel is fixed on the upper portion of the screw rod; the push rod is fixed to the push nut; the upper portion of the push nut coaxially extends into the positioning and sealing seat. The straight-stroke pneumatic actuator with the top-mounted hand wheel mechanism is simpler in structure, more reasonable in force bearing, lower in resistance and longer in service life; besides, ascending and descending of the screw rod can be conveniently and directly observed, and therefore the straight-stroke pneumatic actuator is more convenient to operate.
Description
Technical field
The utility model relates to valve technology field, is specifically related to a kind of linear motion type pneumatic actuator with top dress handwheel.
Background technique
Pneumatic diaphragm valve is by high pressure air, to promote the pressure membrane of pneumatic actuator inside, drives the push rod straight line motion of actuator pressure film bottom, and then completes the switch to valve body.Pneumatic diaphragm valve is easy to use stable, is widely used in automatic adjusting and the telecontrol of chemical industry, oil, metallurgy, electric power, light textile industry.Pneumatic diaphragm valve is mainly comprised of valve mechanism and actuator, and actuator wherein comprises the film air chamber of a sealing, and the one side of described film air chamber is film movably, and film bottom is connected with the push rod of carrying out switch valve.When film air chamber and high-pressure gas circuit UNICOM, signal pressure acts on film can produce thrust, and Compress Spring, moves putter component, is completed the switch motion of valve by push rod.Therefore Pneumatic diaphragm valve is normally arranged in the production system of gas circuit control, yet but due to the restriction of this body structure of pneumatic actuator, always there is pneumatic actuator or control the possibility that source of the gas breaks down, as have a power failure, stop the supple of gas or steam or actuator's bad seals etc. caused the situation of valve cisco unity malfunction, in the time of this, use man-operated mechanism to carry out the keying of manual control valve, can greatly guarantee equipment and personal security, prevent security incident.A kind of positive interaction type pneumatic thin-film execution mechanism handwheel mechanism is provided in the patent documentation of the patent No. 201020688583.9; Can the fine solution Pneumatic diaphragm valve artificial pneumatic problem of this structure, but its structure is comparatively complicated, use stop pin spacing to screw rod sense of rotation, guarantee moving up and down of screw rod, make like this screw rod circumferentially can be subject to larger power, easily damage, in this patent, the runnability of inside screw cannot observe simultaneously, and inconvenience regulates the restriction position of film.It is comparatively complicated that the rotation prevention structure of handwheel also designs, and cost is higher.
Summary of the invention
For above problem, the utility model provides a kind of can facilitate manual adjustment, locked location, and the linear motion type pneumatic actuator of conveniently checking the band top dress handwheel of inside screw runnability.
The utility model solves the technological scheme that its technical problem adopts: the linear motion type pneumatic actuator of this band top dress handwheel comprises pneumatic casing, air bladder, push rod, and be loaded on described pneumatic casing top screw rod, handwheel, set screw nut, observation cover, location sealing seat, promote nut; The drum shape that described location sealing seat is the flanged back-off in bottom, fixes with the inner wall sealing of described housing, and described housing is stretched out on described location sealing seat top, and described location sealing seat is stretched in the coaxial slipper seal in described screw rod bottom; Described observation cover is bell, on its cover wall, is processed with peep hole; Described set screw nut is to process threaded annular shape on the flanged inwall in bottom, and it is fixed on the top of described observation cover; On described screw rod, be processed with and outside thread corresponding on described set screw nut, the thread section of described screw rod and described set screw nut Screw assembly, the top of described screw rod is fixed with described handwheel; Described push rod top is stretched out described air bladder and is fixed by worm structure and described promotion nut, and described promotion nut top is coaxially stretched in described location sealing seat.
As preferably, between the handwheel on described screw rod and set screw nut, be also equipped with locking nut.
As preferably, described promotion nut top is equipped with thrust-bearing, and described screw rod bottom is processed with the counterbore axially making progress, and the annular base of described counterbore holds out against mutually with described thrust-bearing pressed on ring.
The beneficial effects of the utility model are: the linear motion type pneumatic actuator of this band top dress handwheel is connected with valve mechanism, can pass into pressurized gas at described pneumatic casing controls valve mechanism, also can pass through rotation hand wheel, drive described screw rod spiral to decline, by screw rod bottom, promote described promotion nut, and then described air bladder is pushed together with push rod, when screw rod manually revolves while rising, described air bladder and push rod are boosted automatically by the spring of air bladder bottom.So just can realize the manual control to pneumatic actuator, also can be used for air bladder to carry out spacing.This structure is simpler, without circumferential spacing part, and the more reasonable stress that described screw rod rises or declines, resistance is less, longer service life, this final controlling element can cover rising and the decline situation that upper observation hole observes directly screw rod by observation simultaneously, more convenient to operate.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the linear motion type pneumatic actuator of this this band top dress handwheel.
Embodiment
Below in conjunction with embodiment, the utility model is further illustrated:
As shown in embodiment in Fig. 1, the linear motion type pneumatic actuator of this band top dress handwheel, it comprises pneumatic casing 1, air bladder 2, push rod 3, and the screw rod 4, handwheel 5, set screw nut 6, observation cover 7, location sealing seat 8, the promotion nut 9 that are loaded on described pneumatic casing 1 top.The bottom of described housing 1 is also fixed with the positioning framework for being connected with valve mechanism.Described location sealing seat 8 is the drum shape of the flanged back-off in bottom, fixes with the inner wall sealing of described housing 1, and described housing 1 is stretched out on described location sealing seat 8 tops, and described location sealing seat 8 is stretched in the described screw rod 4 coaxial slipper seals in bottom; Described observation cover 7 is bell, on its cover wall, is processed with peep hole; Described set screw nut 6 is processed threaded annular shape on the flanged inwall in bottom, and it is fixed on the top of described observation cover 7; On described screw rod 4, be processed with and outside thread corresponding on described set screw nut 6, the thread section of described screw rod 4 and described set screw nut 6 Screw assemblies, the top of described screw rod 4 is fixed with described handwheel 5; Described push rod 3 tops are stretched out described air bladder 2 and are fixed by worm structure and described promotion nut 9, and described promotion nut 9 tops are coaxially stretched in described location sealing seat 8.
As shown in Figure 1, by the linear motion type pneumatic actuator with top dress handwheel, be used for being connected with valve mechanism, jointly form a kind of Pneumatic diaphragm valve that can be manual.This final controlling element passes into pressurized gas in can the film air chamber in described pneumatic casing 1 valve mechanism is controlled, also can pass through rotation hand wheel 5, drive described screw rod 4 spirals to decline, by screw rod 4 bottoms, promote described promotion nut 9, and then described air bladder 2 is pushed together with push rod 3, when screw rod 4 manually revolves while rising, described air bladder 2 is boosted by the spring of air bladder 2 bottoms automatically with push rod 3.So just can realize the manual control to pneumatic actuator, also can be used for air bladder 2 to carry out spacing.This structure is simpler, without circumferential spacing part, and the more reasonable stress that described screw rod 4 rises or declines, resistance is less, longer service life, this final controlling element can cover rising and the decline situation that 7 upper observation hole windows observe directly screw rod 4 by observation simultaneously, more convenient to operate.
As shown in Figure 1, between the handwheel 5 on described screw rod 4 and set screw nut 6, be also equipped with locking nut 10.People just can be by this locking nut 10 by screw rod 4 lockings like this, and the letter of this locking mode structure is answered, and locking effect is good.
As shown in Figure 1, described promotion nut 9 tops are equipped with thrust-bearing 11, and described screw rod 4 bottoms are processed with the counterbore 41 axially making progress, and the annular base of described counterbore 41 holds out against mutually with described thrust-bearing 11 pressed on rings.The pressed on ring of described thrust-bearing 11 is given lower ring by the steel ball transmitting thrust of bearing, between described thrust-bearing 11 encircles up and down, by steel ball, realizes the rotation of rolling.Described promotion nut 9 tops are also fixed with spacing shim, described promotion nut 9 fixes with described air bladder 2, when described screw rod 4 rotation, described promotion nut 9 is moving part not, by thrust-bearing 11, in the mode of rolling friction, realize screw rod 4 and promote nut 9 straight line between the two holding out against transmission, surface friction drag during transmission reduces greatly.
Claims (3)
1. the linear motion type pneumatic actuator with top dress handwheel, it comprises pneumatic casing (1), air bladder (2), push rod (3), and the screw rod (4), handwheel (5), set screw nut (6), observation cover (7), location sealing seat (8), the promotion nut (9) that are loaded on described pneumatic casing (1) top; It is characterized in that: described location sealing seat (8) is the drum shape of the flanged back-off in bottom, fix with the inner wall sealing of described housing (1), described housing (1) is stretched out on described location sealing seat (8) top, and described location sealing seat (8) is stretched in the coaxial slipper seal in described screw rod (4) bottom; Described observation cover (7) is bell, on its cover wall, is processed with peep hole; Described set screw nut (6) is processed threaded annular shape on the flanged inwall in bottom, and it is fixed on the top of described observation cover (7); On described screw rod (4), be processed with and the upper corresponding outside thread of described set screw nut (6), the thread section of described screw rod (4) and described set screw nut (6) Screw assembly, the top of described screw rod (4) is fixed with described handwheel (5); Described push rod (3) top is stretched out described air bladder (2) and is fixed by worm structure and described promotion nut (9), and described promotion nut (9) top is coaxially stretched in described location sealing seat (8).
2. the linear motion type pneumatic actuator of band according to claim 1 top dress handwheel, is characterized in that: between the handwheel (5) on described screw rod (4) and set screw nut (6), be also equipped with locking nut (10).
3. band according to claim 1 top fills the linear motion type pneumatic actuator of handwheel, it is characterized in that: described promotion nut (9) top is equipped with thrust-bearing (11), described screw rod (4) bottom is processed with the counterbore (41) axially making progress, and the annular base of described counterbore (41) holds out against mutually with described thrust-bearing (11) pressed on ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661666.2U CN203532923U (en) | 2013-10-25 | 2013-10-25 | Straight-stroke pneumatic actuator with top-mounted hand wheel mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661666.2U CN203532923U (en) | 2013-10-25 | 2013-10-25 | Straight-stroke pneumatic actuator with top-mounted hand wheel mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532923U true CN203532923U (en) | 2014-04-09 |
Family
ID=50419131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320661666.2U Expired - Lifetime CN203532923U (en) | 2013-10-25 | 2013-10-25 | Straight-stroke pneumatic actuator with top-mounted hand wheel mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357430A (en) * | 2021-05-31 | 2021-09-07 | 内蒙古蒙达发电有限责任公司 | Operating device for oil drainage protection |
-
2013
- 2013-10-25 CN CN201320661666.2U patent/CN203532923U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357430A (en) * | 2021-05-31 | 2021-09-07 | 内蒙古蒙达发电有限责任公司 | Operating device for oil drainage protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |