CN212429922U - Mechanical pneumatic film actuating mechanism - Google Patents
Mechanical pneumatic film actuating mechanism Download PDFInfo
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- CN212429922U CN212429922U CN202020595386.6U CN202020595386U CN212429922U CN 212429922 U CN212429922 U CN 212429922U CN 202020595386 U CN202020595386 U CN 202020595386U CN 212429922 U CN212429922 U CN 212429922U
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Abstract
The utility model provides a pneumatic film actuating mechanism of mechanical type, including diaphragm chamber and diaphragm, the diaphragm is indoor to be separated into epicoele and cavity of resorption with the diaphragm, the indoor push rod that is equipped with that runs through of diaphragm, still include spacing body, adjust the cover, journey pole and adjusting nut, the corresponding push rod position department in diaphragm chamber top opens there is the mounting hole, spacing body passes through the mounting hole and is fixed with the diaphragm chamber, spacing internal portion cavity has and supplies the push rod direction to stretch into gliding cavity, journey pole fixed connection is at the push rod top, the screw thread has on the journey pole outer peripheral face, adjusting nut threaded connection is on journey pole outer peripheral face, journey pole and adjusting nut stretch out spacing body top, spacing body top still is fixed with the dustcoat and adjusts the cover outside journey pole and adjusting nut. The utility model has the advantages of reasonable design, accessible adjusting nut position is spacing to the stroke, and accessible mechanical type's stop gear reaches the full stroke and is adjustable, and arbitrary a bit carries on spacingly in the full stroke, need not the power, and application scope is more extensive.
Description
Technical Field
The utility model relates to a valve production design field especially relates to a pneumatic membrane actuating mechanism of mechanical type.
Background
With the diversity of the application working conditions of the valve, higher requirements are put forward on the opening and closing and adjusting performances of the valve. In many applications, the valve opening is required to be a fixed point, and the valve is not switched within a calibrated stroke, and may be half-on or half-off. In this case, it is generally adjusted using a positioner. However, the positioner also has advantages and disadvantages. The advantages are that: the adjusting precision is high and the adjusting is reliable. The disadvantages are that: the limitation is large, the locator needs a power supply, and the locator is sensitive to the electric signal reception. The requirements on the environment are high, and the cost of the potentiometer is high. In order to solve this problem, it is necessary to additionally design an actuator that can be adjusted at the full stroke and can perform a limit at any point in the full stroke.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to overcome the deficiency of the prior art, the utility model provides a structural design is reasonable, in pneumatic film mechanism positive effect and reaction, designs mechanical type's limit structure, reaches a mechanical type pneumatic film actuating mechanism of the adjustable design of full stroke.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a pneumatic membrane actuating mechanism of mechanical type, sets up on the governing valve, including diaphragm chamber and diaphragm, the diaphragm with the diaphragm indoor partition for epicoele and cavity of resorption, the diaphragm indoor run through and be equipped with the push rod, still include spacing body, adjusting cover, journey pole and adjusting nut, the diaphragm chamber top correspond push rod position department and open and have the mounting hole, spacing body pass through the mounting hole and fix with the diaphragm chamber, spacing internal portion cavity have and supply the push rod direction to stretch into gliding cavity, journey pole fixed connection at the push rod top, journey pole outer peripheral face on having the screw thread, adjusting nut threaded connection on journey pole outer peripheral face, journey pole and adjusting nut stretch out spacing body top, spacing body top still be fixed with the dustcoat at the outer adjusting cover of journey pole and adjusting nut.
In the above scheme, the full-stroke adjustable limit of the distance rod can be set skillfully through the adjustable distance between the adjusting nut and the top surface of the limiting body, the adjusting nut is in threaded connection with the outer peripheral surface of the distance rod and can be adjusted vertically along the distance rod, the lowest position of the distance rod, which can move downwards, is determined by the position of the lower end surface of the adjusting nut, and the highest position of the distance rod, which moves upwards, is tightly propped against the top surface of the inner wall of the adjusting cover.
Furthermore, in order to facilitate the guide movement of the push rod in the cavity, a guide sleeve is fixed on the inner wall of the cavity of the limiting body, and the inner wall of the guide sleeve is in matched insertion connection with the push rod.
Furthermore, in order to improve the sealing performance of the lower end of the guide sleeve, the lower end of the guide sleeve is provided with a sealing element for sealing the guide sleeve, the inner wall of the cavity and the push rod.
Preferably, the adjusting cover is in sealing connection with the limiting body through an O-shaped ring.
Furthermore, the limiting body is of an inverted T-shaped structure along the radial section of the push rod, the T-shaped structure comprises a transverse part and a longitudinal part, the upper end face of the transverse part is connected to the inner wall of the upper cavity of the membrane chamber in a pressing mode, and the cavity is arranged in the longitudinal part in a penetrating mode.
Furthermore, the cavity is of a two-stage step-shaped structure, the diameter of the step located above is smaller than that of the step located below, the push rod is provided with a shaft shoulder corresponding to the two-stage step-shaped structure, the diameter of the push rod located above the shaft shoulder is matched with that of the step located above, and the diameter of the push rod located at the shaft shoulder is larger than that of the step located above and is smaller than or equal to that of the step located below. The cavity of the secondary step-shaped structure can provide limit for the maximum upward moving stroke of the push rod from the lower part, and when the shaft shoulder and the reducing part of the secondary step-shaped structure are tightly pressed, the push rod is limited and cannot move upwards continuously.
The beneficial effects of the utility model are that, the utility model provides a pair of pneumatic film actuating mechanism of machinist, structural design is reasonable, and through adjusting nut, journey pole and spacing body's cooperation, accessible adjusting nut position is spacing to the stroke, in pneumatic film mechanism positive effect and reaction, all can reach the stop gear of mechanical type, and it is adjustable to reach the full stroke, and arbitrary a bit carries on spacingly in the full stroke, need not the power, and application scope is more extensive.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the upper limit of the preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the positive-acting lower limit in the preferred embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the reaction in the preferred embodiment of the present invention.
Fig. 4 is a schematic structural diagram of the upper limit during the reaction in the preferred embodiment of the present invention.
In the figure, the device comprises a regulating cover 1, a regulating nut 3, a fixed distance rod 4, a limiting body 5, an O-shaped ring 6, a guide sleeve 7, a sealing element 8, a push rod 9, a membrane chamber 10 and a membrane.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
The pneumatic membrane actuator of a mechanical type as shown in fig. 1 to fig. 3 is the preferred embodiment of the present invention, and is disposed on the regulating valve, and includes a membrane chamber 9 and a membrane 10, wherein the membrane 10 separates the interior of the membrane chamber 9 into an upper chamber and a lower chamber.
The film chamber 9 is internally provided with a push rod 8 in a penetrating manner, and further comprises a limiting body 4, an adjusting cover 1, a distance rod 3 and an adjusting nut 2, the top of the film chamber 9 is provided with a mounting hole corresponding to the position of the push rod 8, the limiting body 4 is fixed with the film chamber 9 through the mounting hole, and the limiting body 4 is internally hollow and provided with a cavity for the push rod 8 to guide and extend into the sliding cavity. In order to facilitate the guiding movement of the push rod 8 in the cavity, a guide sleeve 6 is fixed on the inner wall of the cavity of the limiting body 4, and the inner wall of the guide sleeve 6 is in matched insertion connection with the push rod 8.
3 fixed connection of stroke length pole is at the 8 tops of push rod, 3 outer peripheral faces of stroke length pole on have a screw thread, 2 threaded connection of adjusting nut on 3 outer peripheral faces of stroke length pole, stroke length pole 3 and adjusting nut 2 stretch out spacing body 4 tops, spacing body 4 tops still be fixed with the dustcoat and in stroke length pole 3 and adjusting nut 2 outer regulation cover 1. The adjusting cover 1 is connected with the limiting body 4 in a sealing mode through an O-shaped ring 5. Meanwhile, in order to improve the sealing performance of the lower end of the guide sleeve 6, the lower end of the guide sleeve 6 is provided with a sealing piece 7 for sealing the guide sleeve 6, the inner wall of the cavity and the push rod 8.
The limiting body 4 is of an inverted T-shaped structure along the radial section of the push rod 8, the T-shaped structure comprises a transverse part and a longitudinal part, the upper end face of the transverse part is in press connection with the inner wall of the upper cavity of the membrane chamber 9, and the cavity penetrates through the longitudinal part. The cavity be two-stage step-like structure, and the step diameter that is located the top is less than the step diameter that is located the below, push rod 8 on also have the shaft shoulder corresponding to two-stage step-like structure, the diameter of push rod 8 that is located the shaft shoulder top with be located the step diameter adaptation of top, the diameter of push rod 8 that the shaft shoulder was located is greater than the step diameter that is located the top and is less than or equal to the step diameter that is located the below. The cavity of the secondary step-shaped structure can provide limit for the maximum upward moving stroke of the push rod 8 from the lower part, and when the shaft shoulder and the reducing part of the secondary step-shaped structure are tightly pressed, the push rod 8 is limited and cannot move upwards continuously.
In this embodiment, the adjustable spacing of the full stroke of the fixed distance rod 3 can be set by setting the adjustable spacing between the top surfaces of the adjusting nut 2 and the limiting body 4, the adjusting nut 2 is in threaded connection with the outer peripheral surface of the fixed distance rod 3 and can be adjusted up and down along the fixed distance rod 3, the lowest position of the fixed distance rod 3 which can move down is determined by the lower end surface position of the adjusting nut 2, and the highest position of the fixed distance rod 3 which moves up is tightly pressed on the top surface of the inner wall of the adjusting cover 1.
The working principle is as follows:
fig. 1 and 2 are schematic views of the present embodiment in a forward operation, and fig. 3 is a schematic view of the present embodiment in a reverse operation. Adjusting nut 2 is fixed spacing in a certain position of journey pole 3, and when actuating mechanism execution upward movement, actuating mechanism push rod 8 and journey pole 3 contact to 3 upward movements of fore-set journey pole, when the journey pole 3 top move with adjust cover 1 contact, by adjust cover 1 spacing can not continue upwards, push rod 8 also can not continue upward movement, reaches the spacing effect of limiting. When the push rod 8 moves downwards, the fixed-stroke rod 3 falls along with the push rod until the lower end face of the adjusting nut 2 is pressed on the limiting body 4, the fixed-stroke rod 3 does not fall, and the push rod 8 is limited and does not fall.
The pneumatic membrane actuating mechanism of a mechanist who so designs, structural design is reasonable, and through adjusting nut 2, 3 and the spacing body 4's of journey pole, accessible adjusting nut 2 positions are spacing to the stroke, in pneumatic membrane mechanism positive action and reaction, all can reach the stop gear of mechanical type, and it is adjustable to reach the full stroke, and arbitrary a bit is spacing in the full stroke, need not the power, and application scope is more extensive.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. The utility model provides a pneumatic membrane actuating mechanism of mechanical type, sets up on the governing valve, includes diaphragm chamber (9) and diaphragm (10), diaphragm (10) with separate for epicoele and cavity of resorption in diaphragm chamber (9), diaphragm chamber (9) in run through and be equipped with push rod (8), its characterized in that: still include spacing body (4), adjusting cap (1), journey pole (3) and adjusting nut (2), membrane room (9) top correspond push rod (8) position department and open and have the mounting hole, spacing body (4) fixed through mounting hole and membrane room (9), spacing body (4) inside cavity have and supply push rod (8) direction to stretch into gliding cavity, journey pole (3) fixed connection at push rod (8) top, adjusting nut (2) threaded connection on journey pole (3) outer peripheral face, journey pole (3) and adjusting nut (2) stretch out spacing body (4) top, spacing body (4) top still be fixed with the dustcoat at journey pole (3) and adjusting nut (2) outer adjusting cap (1).
2. A mechano-pneumatic diaphragm actuator according to claim 1 wherein: the inner wall of the cavity of the limiting body (4) is fixed with a guide sleeve (6), and the inner wall of the guide sleeve (6) is matched and spliced with a push rod (8).
3. A mechano-pneumatic diaphragm actuator according to claim 2 wherein: the lower end of the guide sleeve (6) is provided with a sealing element (7) for sealing the guide sleeve (6), the inner wall of the cavity and the push rod (8).
4. A mechano-pneumatic diaphragm actuator according to claim 1 wherein: the adjusting cover (1) is connected with the limiting body (4) in a sealing mode through an O-shaped ring (5).
5. A mechano-pneumatic diaphragm actuator according to claim 1 wherein: the limiting body (4) is of an inverted T-shaped structure along the radial section of the push rod (8), the T-shaped structure comprises a transverse part and a longitudinal part, the upper end face of the transverse part is connected to the inner wall of the upper cavity of the membrane chamber (9) in a pressing mode, and the cavity penetrates through the longitudinal part.
6. The membrane actuator of claim 5 wherein: the cavity be two-stage step-like structure, and the step diameter that is located the top is less than the step diameter that is located the below, push rod (8) on also have the shaft shoulder corresponding to two-stage step-like structure, push rod (8) diameter that is located the shaft shoulder top with be located the step diameter adaptation of top, push rod (8) diameter that the shaft shoulder department is greater than the step diameter that is located the top and is less than or equal to the step diameter that is located the below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020595386.6U CN212429922U (en) | 2020-04-20 | 2020-04-20 | Mechanical pneumatic film actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020595386.6U CN212429922U (en) | 2020-04-20 | 2020-04-20 | Mechanical pneumatic film actuating mechanism |
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| Publication Number | Publication Date |
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| CN212429922U true CN212429922U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020595386.6U Active CN212429922U (en) | 2020-04-20 | 2020-04-20 | Mechanical pneumatic film actuating mechanism |
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| CN (1) | CN212429922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857338A (en) * | 2022-03-25 | 2022-08-05 | 杭州富尚阀门有限公司 | Pneumatic actuating mechanism applied to stop valve |
-
2020
- 2020-04-20 CN CN202020595386.6U patent/CN212429922U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857338A (en) * | 2022-03-25 | 2022-08-05 | 杭州富尚阀门有限公司 | Pneumatic actuating mechanism applied to stop valve |
| CN114857338B (en) * | 2022-03-25 | 2023-06-30 | 杭州富尚阀门有限公司 | Pneumatic actuating mechanism applied to stop valve |
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