CN112610745A - Pneumatic film actuating mechanism and pneumatic actuating device - Google Patents
Pneumatic film actuating mechanism and pneumatic actuating device Download PDFInfo
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- CN112610745A CN112610745A CN202011542881.1A CN202011542881A CN112610745A CN 112610745 A CN112610745 A CN 112610745A CN 202011542881 A CN202011542881 A CN 202011542881A CN 112610745 A CN112610745 A CN 112610745A
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- Prior art keywords
- diaphragm
- pneumatic
- membrane
- cover
- membrane cover
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
Abstract
The invention discloses a pneumatic film actuating mechanism and a pneumatic actuating device.A lower film cover is provided with an extension part sleeved by an upper film cover, the surface of the extension part facing the upper film cover is provided with an accommodating groove so as to form a sealed clamping cavity in a matching way, the sealed clamping cavity is formed by matching a communication channel between the upper film cover and the extension part and the accommodating groove, namely, the inlet of the sealed clamping cavity is narrower, and the part comprising the accommodating groove is wider; simultaneously stretch into in this sealed centre gripping chamber in the periphery of diaphragm, and set up sealed joint spare on the periphery of diaphragm, realize the fixed and sealed of diaphragm through the contact of sealed joint spare and storage tank and upper membrane lid internal surface, thereby realized the effect of diaphragm relative upper membrane lid and lower membrane lid self sealss, and need not to close through bolt and upper membrane lid and lower membrane lid like current pneumatic film actuating mechanism and realize the fixed and sealed of diaphragm, the problem of the easy damage of diaphragm or inefficacy among the current pneumatic film actuating mechanism has been solved.
Description
Technical Field
The invention belongs to the technical field of pneumatic membrane actuating devices, and particularly relates to a pneumatic membrane actuating mechanism and a pneumatic actuating device.
Background
As shown in fig. 1 and 2, the conventional pneumatic diaphragm actuator has the working principle that: the lower membrane cover 6, the membrane 4 and the tray 3 form an actuating mechanism air inlet cavity, the spring 2 and the upper membrane cover 1 form a spring cavity, and the two cavities are tightly pressed by the bolt 5 and ensure that the air inlet cavity is airtight. When the air pressure of the air inlet is increased, the tray 3 overcomes the elasticity of the spring 2 to drive the push rod 7 to move upwards, and the valve rod of the control valve connected with the push rod 7 drives the valve to open; when the air pressure of the air inlet is reduced, the tray 3 drives the push rod 7 to move downwards under the action of the elastic force of the spring 2, and the valve rod of the control valve connected with the push rod 7 drives the valve to close. The structure of the diaphragm 4 is shown in figure 2, the structure of the excircle part is a plane, the external leakage sealing is realized by compressing the end surface plane of the upper diaphragm cover 1 and the end surface plane of the lower diaphragm cover 6 through the bolt 5, and the technical problems of the structure are as follows: too loose a bolt fastening results in air leakage of the diaphragm; the bolts 5 are fastened too tightly, so that the rubber of the diaphragm 4 is damaged or the rubber material is easy to fatigue failure, so that the diaphragm 4 leaks air.
Disclosure of Invention
The invention aims to provide a pneumatic membrane actuating mechanism and a pneumatic actuating device, and aims to solve the problem that a membrane in the conventional pneumatic membrane actuating mechanism is easy to damage or lose efficacy.
In order to solve the problems, the technical scheme of the invention is as follows:
the invention discloses a pneumatic membrane actuating mechanism, which comprises an upper membrane cover, a lower membrane cover, a membrane, a tray, a push rod and an elastic piece, wherein the upper membrane cover is arranged on the upper surface of the lower membrane cover;
the upper membrane cover is detachably connected with the lower membrane cover and is matched with the lower membrane cover to form an accommodating cavity, an exhaust port is formed in the upper membrane cover, and an air inlet is formed in the lower membrane cover;
an extension part extends from the surface of the lower membrane cover facing the upper membrane cover, the upper membrane cover is sleeved on the extension part, a gap is reserved between the extension part and the inner surface of the upper membrane cover, and the gap is a communication channel; the surface of the extension part facing the communication channel is provided with an accommodating groove, and the accommodating groove is matched with the communication channel to form a sealed clamping cavity;
the outer periphery of the diaphragm extends into the accommodating groove through the communicating channel, a sealing clamping piece is arranged on the outer periphery of the diaphragm, and the sealing clamping piece is clamped in the sealing clamping cavity and is matched with the diaphragm to divide the accommodating cavity into an air inlet cavity and an elastic cavity;
the tray is arranged above the membrane; the push rod is arranged in the air inlet cavity and connected with the tray, and the output end of the push rod extends out of the lower film cover; the elastic piece is arranged in the elastic cavity, and two ends of the elastic piece are respectively connected with the tray and the upper membrane cover.
According to the pneumatic membrane actuating mechanism, the extension part is a ring-shaped part arranged on the lower membrane cover, and the outer circular surface of the ring-shaped part is matched with the upper membrane cover to form the communication channel; the outer circular surface is provided with the containing groove.
According to the pneumatic membrane actuating mechanism, a plurality of first bosses are arranged on the outer edge of the upper membrane cover; a plurality of second bosses corresponding to the first bosses are arranged on the outer edge of the lower film cover; and the corresponding first lug boss and the second lug boss are provided with connecting holes for bolts to pass through.
According to the pneumatic membrane actuating mechanism, the lower membrane cover is provided with the through hole used for enabling the output end of the push rod to extend out, the lower membrane cover extends along the through hole to form the guide sleeve, and the push rod penetrates through the guide sleeve.
According to the pneumatic membrane actuating mechanism, the sealing clamping piece comprises at least one first bulge, and the first bulge is arranged on the surface, facing the accommodating groove, of the outer periphery of the membrane and used for being clamped in the accommodating groove and achieving sealing.
According to the pneumatic membrane actuating mechanism, the sealing clamping piece further comprises at least one second bulge, and the second bulge is arranged on the surface, deviating from the accommodating groove, of the outer periphery of the membrane and is used for being clamped in the sealing clamping cavity in a matched mode with the first bulge and achieving sealing.
According to the pneumatic membrane actuating mechanism, the membrane comprises rubber and the flexible tensile piece, the rubber is used for forming the body of the membrane, and the flexible tensile piece is arranged in the body and used for enhancing the tensile strength of the body.
According to the pneumatic membrane actuating mechanism, the spring clamping seats are uniformly distributed on the upper surface of the tray and are respectively used for being connected with the corresponding springs.
According to the pneumatic membrane actuating mechanism, the fixing sleeve is arranged between the upper end of the push rod and the tray, and the upper end of the push rod penetrates through the fixing sleeve and is fixed through the fixing nut.
The invention provides a pneumatic actuating device, which comprises the pneumatic membrane actuating mechanism.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
in one embodiment of the invention, the lower film cover is provided with an extension part sleeved by the upper film cover at the joint of the upper film cover and the lower film cover, the surface of the extension part facing the upper film cover is further provided with an accommodating groove, so that a sealed clamping cavity is formed in a matching way, the sealed clamping cavity is formed by matching a communication channel between the upper film cover and the extension part and the accommodating groove, namely, the inlet of the sealed clamping cavity is narrow in the vertical view, and the part comprising the accommodating groove is wide; simultaneously stretch into in this sealed centre gripping chamber in the periphery of diaphragm, and set up sealed joint spare on the periphery of diaphragm, realize the fixed and sealed of diaphragm through the contact of sealed joint spare and storage tank and upper membrane lid internal surface, thereby realized the effect of diaphragm relative upper membrane lid and lower membrane lid self sealss, and need not to close through bolt and upper membrane lid and lower membrane lid like current pneumatic film actuating mechanism and realize the fixed and sealed of diaphragm, the problem of the easy damage of diaphragm or inefficacy among the current pneumatic film actuating mechanism has been solved.
Drawings
FIG. 1 is a schematic diagram of a prior art pneumatic membrane actuator;
FIG. 2 is a schematic diagram of a diaphragm of a conventional pneumatic diaphragm actuator
FIG. 3 is a schematic view of a pneumatic membrane actuator of the present invention;
FIG. 4 is an enlarged schematic view of the pneumatic membrane actuator of the present invention;
FIG. 5 is a schematic view of a diaphragm of the present invention;
fig. 6 is an enlarged schematic view of the diaphragm of the present invention.
Description of reference numerals: 1: covering with a film; 2: a spring; 3: a tray; 4: a membrane; 401: a first protrusion; 402: a second protrusion; 5: a bolt; 6: a lower film cover; 7: a push rod; 8: an air inlet; 9: an exhaust port; 10: sealing the clamping cavity; 11: a rubber layer; 12: a flexible tensile member; 13: and bending the ring.
Detailed Description
The pneumatic membrane actuator and the pneumatic actuator according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
Example one
Referring to fig. 3 and 4, in one embodiment, the pneumatic membrane actuator comprises an upper membrane cover 1, a lower membrane cover 6, a membrane 4, a tray 3, a push rod 7 and an elastic element.
Wherein, the upper film cover 1 is detachably connected with the lower film cover 6 and is matched with the lower film cover to form an accommodating cavity. An air outlet 9 is arranged on the upper membrane cover 1, and an air inlet 8 is arranged on the lower membrane cover 6.
The lower membrane cover 6 extends to the upper membrane cover 1, and the upper membrane cover 1 is sleeved on the extension part, and a gap is reserved between the extension part and the inner surface of the upper membrane cover 1 and is a communication channel. The surface of the extending part facing the communicating channel is provided with a containing groove, and the containing groove is matched with the communicating channel to form a sealed clamping cavity 10. The outer periphery of the diaphragm 4 extends into the containing groove through the communicating channel, a sealing clamping piece is arranged on the outer periphery of the diaphragm 4, the sealing clamping piece is clamped in the sealing clamping cavity 10, and the containing cavity is divided into an air inlet cavity and an elastic cavity by matching with the diaphragm 4.
Further, a tray 3 is attached to the upper side of the film 4. The push rod 7 is arranged in the air inlet cavity and connected with the tray 3, and the output end of the push rod extends out of the lower film cover 6 and is used for being connected with an external executive component. The elastic piece is arranged in the elastic cavity, and two ends of the elastic piece are respectively connected with the tray 3 and the upper film cover 1.
In the embodiment, an extension part sleeved by the upper film cover 1 is arranged at the position, located at the joint of the upper film cover 1 and the lower film cover 6, of the lower film cover 6, and the surface of the extension part facing the upper film cover 1 is further provided with an accommodating groove, so that a sealed clamping cavity 10 is formed in a matching manner, the sealed clamping cavity 10 is formed by matching a communication channel between the upper film cover 1 and the extension part and the accommodating groove, namely, the inlet of the sealed clamping cavity 10 is narrow in a vertical view, and the part including the accommodating groove is wide; simultaneously stretch into in this sealed centre gripping chamber 10 in the periphery of diaphragm 4, and set up sealed joint spare on the periphery of diaphragm 4, realize the fixed of diaphragm 4 and sealed through the contact of sealed joint spare and storage tank and upper membrane lid 1 internal surface, thereby realized the effect of diaphragm 4 relative upper membrane lid 1 and lower membrane lid 6 self sealss, and need not to close through bolt 5 and upper membrane lid 1 and lower membrane lid 6 lid like current pneumatic film actuating mechanism and realize the fixed and sealed of diaphragm 4, the easy damaged or problem of inefficacy of diaphragm 4 among the current pneumatic film actuating mechanism has been solved.
The following further describes the specific structure of the pneumatic membrane actuator of this embodiment:
in this embodiment, the upper film cover 1 and the lower film cover 6 may be U-shaped or bowl-shaped, and they are fastened to form the accommodating cavity.
In this embodiment, the extension portion may be a ring-shaped member (i.e., an annular boss) provided on the lower membrane cover 6, and an outer circumferential surface of the ring-shaped member cooperates with the upper membrane cover 1 to form a communication channel. Meanwhile, the accommodating groove may be formed on the outer circumferential surface, and the sealing clamping cavity 10 may be formed by cooperating with the communicating channel.
In this embodiment, the outer edge of the upper film cover 1 is provided with a plurality of first bosses. The outer edge of the lower film cover 6 is provided with a plurality of second bosses corresponding to the first bosses. The corresponding first boss and the second boss are provided with connecting holes for the bolts 5 to pass through. I.e. to be a petal-type boss and fastened by bolts 5.
In this embodiment, the lower film cover 6 is provided with a through hole for extending the output end of the push rod 7, the lower film cover 6 extends along the through hole to form a guide sleeve, and the push rod 7 penetrates through the guide sleeve and is used for guiding and limiting the movement direction of the push rod 7.
In this embodiment, the sealing fastener of the membrane 4 includes at least one first protrusion 401 and at least one ground protrusion, and the first protrusion 401 is disposed on a surface of the outer periphery of the membrane 4 facing the receiving groove, and is used for being fastened in the receiving groove and achieving sealing. The second protrusion 402 is disposed on a surface of the outer periphery of the membrane 4 facing away from the receiving groove, and is used for being engaged with the first protrusion 401 to be clamped in the sealing clamping cavity 10 (i.e. the inner surface of the upper membrane cover 1) and achieving sealing. The arrangement of the first protrusion 401 and the second protrusion 402 can ensure that the diaphragm 4 can bear the air pressure, the number of the first protrusion 401 and the second protrusion 402 can be determined according to the height of the sealed clamping cavity 10 and the specific sealing requirement, and the height of the first protrusion 401 and the second protrusion 402 can be determined according to the width of the sealed clamping cavity 10 to ensure the sealing effect.
Furthermore, a bending ring 13 is arranged at the edge of the diaphragm 4, the inner ring of the bending ring 13 is connected with the edge of the diaphragm 4, and the sealing clamping piece is arranged on the bending ring 13; the provision of the bending ring 13 as an extension of the edge of the membrane makes it possible to smoothly snap into the sealed clamping chamber 10 formed by the membrane cover, matching the membrane cover and the channel leading into the sealed clamping chamber 10. The bending ring 13 may be provided in an L-shape, and the first protrusion 401 and the second protrusion 402 are provided to form an L-shaped protrusion structure, which ensures that the diaphragm can withstand the required air pressure.
In this embodiment, the diaphragm 4 includes a rubber layer 11 and a flexible tensile member 12, the rubber layer 11 is used to form the diaphragm 4, and the flexible tensile member 12 is disposed in the rubber layer 11 to enhance the tensile strength of the diaphragm 4 and ensure the bearing capacity of the diaphragm 4. Wherein the flexible tensile member 12 is a reinforced woven cloth.
In this embodiment, a plurality of spring 2 clamping seats are uniformly distributed on the upper surface of the tray 3 and are respectively used for being connected with the corresponding springs 2, so that the springs 2 can be conveniently connected with the springs 2, and meanwhile, when the tray 3 moves up and down, the springs 2 cannot be separated from the tray 3.
In this embodiment, a fixing sleeve is disposed between the upper end of the push rod 7 and the tray 3, and the upper end of the push rod 7 passes through the fixing sleeve and is fixed by a fixing nut, so as to fix the push rod 7 and the tray 3.
The following describes the installation process of the pneumatic membrane actuator of the present embodiment:
during the installation, only need put into the storage tank of membrane lid 6 down with the bulge on the periphery of diaphragm 4 earlier, when membrane lid 1 lid fits membrane lid 6 down and the cover is established to the loop forming element, can form sealed centre gripping chamber 10, simultaneously, the inside and outside side of the bulge on diaphragm 4 two sides can receive the extrusion to form sealed vice, and last first boss and second boss pass through bolt 5 and connect and can realize the fastening of membrane lid 1 and membrane lid 6 down.
Example two
A pneumatic actuator comprising the pneumatic diaphragm actuator of the first embodiment. An extension part sleeved by the upper film cover 1 is arranged at the position, located at the joint of the upper film cover 1 and the lower film cover 6, of the lower film cover 6, and an accommodating groove is further formed in the surface, facing the upper film cover 1, of the extension part, so that a sealed clamping cavity 10 is formed in a matched mode, the sealed clamping cavity 10 is formed by a communication channel between the upper film cover 1 and the extension part and the accommodating groove in a matched mode, namely, the inlet of the sealed clamping cavity 10 is narrow when viewed in the vertical direction, and the part including the accommodating groove is wide; simultaneously stretch into in this sealed centre gripping chamber 10 in the periphery of diaphragm 4, and set up sealed joint spare on the periphery of diaphragm 4, realize the fixed of diaphragm 4 and sealed through the contact of sealed joint spare and storage tank and upper membrane lid 1 internal surface, thereby realized the effect of diaphragm 4 relative upper membrane lid 1 and lower membrane lid 6 self sealss, and need not to close through bolt 5 and upper membrane lid 1 and lower membrane lid 6 lid like current pneumatic film actuating mechanism and realize the fixed and sealed of diaphragm 4, the easy damaged or problem of inefficacy of diaphragm 4 among the current pneumatic film actuating mechanism has been solved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (10)
1. A pneumatic membrane actuating mechanism is characterized by comprising an upper membrane cover, a lower membrane cover, a membrane, a tray, a push rod and an elastic piece;
the upper membrane cover is detachably connected with the lower membrane cover and is matched with the lower membrane cover to form an accommodating cavity, an exhaust port is formed in the upper membrane cover, and an air inlet is formed in the lower membrane cover;
an extension part extends from the surface of the lower membrane cover facing the upper membrane cover, the upper membrane cover is sleeved on the extension part, a gap is reserved between the extension part and the inner surface of the upper membrane cover, and the gap is a communication channel; the surface of the extension part facing the communication channel is provided with an accommodating groove, and the accommodating groove is matched with the communication channel to form a sealed clamping cavity;
the outer periphery of the diaphragm extends into the accommodating groove through the communicating channel, a sealing clamping piece is arranged on the outer periphery of the diaphragm, and the sealing clamping piece is clamped in the sealing clamping cavity and is matched with the diaphragm to divide the accommodating cavity into an air inlet cavity and an elastic cavity;
the tray is arranged above the membrane; the push rod is arranged in the air inlet cavity and connected with the tray, and the output end of the push rod extends out of the lower film cover; the elastic piece is arranged in the elastic cavity, and two ends of the elastic piece are respectively connected with the tray and the upper membrane cover.
2. The pneumatic membrane actuator of claim 1, wherein the extension is an annular member disposed on the lower membrane cover, and an outer circumferential surface of the annular member cooperates with the upper membrane cover to form the communication channel; the outer circular surface is provided with the containing groove.
3. The pneumatic membrane actuator of claim 1, wherein the outer edge of the upper membrane cover is provided with a plurality of first bosses; a plurality of second bosses corresponding to the first bosses are arranged on the outer edge of the lower film cover; and the corresponding first lug boss and the second lug boss are provided with connecting holes for bolts to pass through.
4. The pneumatic membrane actuator of claim 1, wherein the lower membrane cover is provided with a through hole for extending the output end of the push rod, and the lower membrane cover is extended with a guide sleeve along the through hole, and the push rod is inserted into the guide sleeve.
5. The pneumatic diaphragm actuator of claim 1 wherein said sealing latch comprises at least a first protrusion, said first protrusion being disposed on a surface of an outer periphery of said diaphragm facing said receiving cavity for latching in said receiving cavity and sealing.
6. The pneumatic diaphragm actuator of claim 5 wherein said sealing clip further comprises at least one second protrusion, said second protrusion being disposed on a surface of an outer periphery of said diaphragm facing away from said receiving cavity for engaging said first protrusion to clip into said sealing clamping cavity and effect a seal.
7. The pneumatic membrane actuator of claim 1 wherein said diaphragm comprises rubber for forming a body of said diaphragm and a flexible tensile member disposed within said body for increasing the tensile strength of said body.
8. The pneumatic membrane actuator of claim 1, wherein a plurality of spring retainers are evenly distributed on the upper surface of the tray and are respectively used for connecting with the corresponding springs.
9. The pneumatic diaphragm actuator of claim 1 wherein a retaining sleeve is disposed between said upper end of said push rod and said tray, said upper end of said push rod passing through said retaining sleeve and being secured thereto by a retaining nut.
10. A pneumatic actuator comprising a pneumatic membrane actuator according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011542881.1A CN112610745A (en) | 2020-12-23 | 2020-12-23 | Pneumatic film actuating mechanism and pneumatic actuating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011542881.1A CN112610745A (en) | 2020-12-23 | 2020-12-23 | Pneumatic film actuating mechanism and pneumatic actuating device |
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| Publication Number | Publication Date |
|---|---|
| CN112610745A true CN112610745A (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011542881.1A Pending CN112610745A (en) | 2020-12-23 | 2020-12-23 | Pneumatic film actuating mechanism and pneumatic actuating device |
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| Country | Link |
|---|---|
| CN (1) | CN112610745A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1551755A (en) * | 2001-06-13 | 2004-12-01 | ���ع��ʹ�˾ | Vacuum demand flow valve |
| CN203395336U (en) * | 2013-08-13 | 2014-01-15 | 黄石兴阀科技有限公司 | Magnetic-power switching valve |
| CN204784986U (en) * | 2015-07-14 | 2015-11-18 | 杭州蓝圣阀门有限公司 | Of preventing wind diaphragm pneumatic film executor |
| JP2020070889A (en) * | 2018-11-01 | 2020-05-07 | 株式会社Ｌｉｘｉｌ | Diaphragm valve |
| CN211852935U (en) * | 2019-12-20 | 2020-11-03 | 南京赛曼流体设备有限公司 | Pneumatic film actuating mechanism of fire safety protection position |
| CN112081926A (en) * | 2019-06-13 | 2020-12-15 | 虞君道 | Double-filter-screen electromagnetic valve |
-
2020
- 2020-12-23 CN CN202011542881.1A patent/CN112610745A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1551755A (en) * | 2001-06-13 | 2004-12-01 | ���ع��ʹ�˾ | Vacuum demand flow valve |
| CN203395336U (en) * | 2013-08-13 | 2014-01-15 | 黄石兴阀科技有限公司 | Magnetic-power switching valve |
| CN204784986U (en) * | 2015-07-14 | 2015-11-18 | 杭州蓝圣阀门有限公司 | Of preventing wind diaphragm pneumatic film executor |
| JP2020070889A (en) * | 2018-11-01 | 2020-05-07 | 株式会社Ｌｉｘｉｌ | Diaphragm valve |
| CN112081926A (en) * | 2019-06-13 | 2020-12-15 | 虞君道 | Double-filter-screen electromagnetic valve |
| CN211852935U (en) * | 2019-12-20 | 2020-11-03 | 南京赛曼流体设备有限公司 | Pneumatic film actuating mechanism of fire safety protection position |
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Application publication date: 20210406 |
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