CN103591407B

CN103591407B - Aerodynamic retarder

Info

Publication number: CN103591407B
Application number: CN201310577460.6A
Authority: CN
Inventors: 程兴炎
Original assignee: Zhejiang Wanlong Machinery Co Ltd
Current assignee: Zhejiang Wanlong Machinery Co Ltd
Priority date: 2013-11-19
Filing date: 2013-11-19
Publication date: 2015-09-30
Anticipated expiration: 2033-11-19
Also published as: CN103591407A

Abstract

The present invention relates to a kind of aerodynamic retarder, comprise suction tude, steam outlet pipe and cylinder block, it is characterized in that: also comprise piston apparatus, breathing pipe and exit orifice, one end of described breathing pipe is fixed in suction tude, the other end is fixed on cylinder block sidewall, and breathing pipe is communicated with described suction tude, air cavity; Piston apparatus is arranged in air cavity, comprise a piston apparatus and No. two piston apparatus, a piston apparatus is made up of a piston and a piston body, No. two piston apparatus are made up of No. two pistons and No. two piston bodies, and piston, piston body, No. two pistons and No. two piston bodies are fixed successively; Exit orifice is arranged on cylinder block bottom, and No. two piston bodies pass outside cylinder block by exit orifice; A piston and a piston body have piston air vent.Structure of the present invention is simple, reasonable in design, and air-flow, through this device, can make air-flow progressively increase, and arrives the effect of buffering.Generally can be connected with pneumatic actuator, the noise connecing gas moment can be reduced.

Description

Aerodynamic retarder

Technical field

The present invention relates to a kind of buffer, particularly a kind of aerodynamic retarder, it is mainly applicable to the front end airflow mouth of pneumatic actuator, plays buffer function during air inlet.

Background technique

Buffer is the more buffer shock-absorbing equipment of industrial application, and Main Function absorbs various impact energy, proterctive equipment and reduction noise etc.

At present, the suction port of pneumatic actuator directly connects air inlet system, air inlet system controls gas and enters pneumatic actuator by suction port, it is very fast that a large amount of gas directly pours in hourly velocity, air pressure is large, the active force caused is also very large, when pneumatic actuator is operated, noise is large, affects working environment, causes noise pollution, unfavorable to the staff at scene, and under the repeat function of gas atmosphere, very large to the infringement of pneumatic actuator, pneumatic actuator is easy to damage, working life shortens, and improves the user cost of equipment.

China Patent Publication No. is 202065603Udisclose the utility model patent that a kind of name is called " air-guide device with buffer ", it comprises suction tude, steam outlet pipe and buffer, the buffer be all connected with this suction tude and steam outlet pipe is provided with between suction tude with steam outlet pipe, main purpose prevents from air in pipeline from producing eddy current to damage air-guide device, can not make gas distribution step-down, therefore there is above defect in it.

Summary of the invention

The object of the invention is to overcome present technology above shortcomings, and provide a kind of reasonable in design, reduce noise during equipment running, reduce gas load, improve the aerodynamic retarder of service life of equipment.

The present invention's adopted technological scheme that solves the problem is: this aerodynamic retarder, be arranged on the suction port of the pneumatic actuator matched with it, described aerodynamic retarder comprises suction tude, steam outlet pipe and cylinder block, described suction tude and steam outlet pipe are all fixed in described cylinder block, suction tude is positioned at the top of cylinder block, steam outlet pipe is positioned at the position of cylinder block sidewall near bottom, has air cavity in described cylinder block, and described suction tude, steam outlet pipe are all communicated with air cavity.Gas, under gas pressure, enters the air cavity of cylinder block from the suction port of suction tude, then is flowed out by the air outlet of steam outlet pipe, then enters the suction port of pneumatic actuator again.

Aerodynamic retarder also comprises piston apparatus, breathing pipe and exit orifice, and one end of described breathing pipe is fixed in suction tude, and the other end is fixed on cylinder block sidewall, and breathing pipe is communicated with described suction tude, air cavity; Breathing pipe and steam outlet pipe are separately fixed on the sidewall of cylinder block, and its position is relative.Gas enters the side of cylinder block air cavity by suction tude, and some gas distribution is entered by the opposite side of breathing pipe to cylinder block simultaneously, reaches the object of shunting, makes can not pouring in completely moment of gas, increases the burden of cylinder block.

Described piston apparatus is arranged in air cavity, it comprises a piston apparatus and No. two piston apparatus, a described piston apparatus is made up of a piston and a piston body, No. two described piston apparatus are made up of No. two pistons and No. two piston bodies, and a described piston, piston body, No. two pistons and No. two piston bodies are fixed successively; Piston apparatus can move in air cavity.

Described exit orifice is arranged on cylinder block bottom, and No. two described piston bodies pass outside cylinder block by exit orifice; Exit orifice limited piston device moves in parallel in air cavity, is convenient to by piston apparatus adjusting gas flow, and serves supporting effect.

Described air cavity is divided into an air cavity, No. two air cavitys and No. three air cavitys by a described piston and No. two pistons; A described piston and a piston body all have piston air vent, and two piston air vents are interconnected, and a piston breathing pipe is communicated with described air cavity, and another piston air vent is communicated with described No. two air cavitys; Breathing pipe is communicated with No. three air cavitys.The shape size of a piston and No. two pistons matches with air cavity, gas enters air cavity and breathing pipe by suction tude, the gas directly entering air cavity first pours in an air cavity, gas expansion in an air cavity, No. two air cavitys are entered by piston channel, and promote piston apparatus and move to exit orifice direction, make No. two pistons cover the mouth of pipe of steam outlet pipe gradually; Enter the gas of No. three air cavitys from breathing pipe, export gas by semi-enclosed steam outlet pipe mouth of pipe, make gas flow speed less, air pressure is lower, serves the effect of buffering.The active force of gas is less, and little to the infringement of pneumatic actuator when gas enters pneumatic actuator, the transient noise of generation is little, in the working life of extension device, improves working environment.

Exit orifice of the present invention is fixed with spring pad, described spring pad is fixed with spring, described spring is arranged in described air cavity, and spring and spring pad are all enclosed within outside No. two piston bodies.Spring pad can make corresponding size adjustment according to the reduction length demand of practical operation medi-spring.Spring is enclosed within outside No. two piston bodies together with spring pad, and spring limits the displacement distance of No. two pistons, prevents No. two piston closes from living the suction port that breathing pipe enters air cavity.

Exit orifice of the present invention is also provided with seal ring, and seal ring is enclosed within outside No. two piston bodies, and fits tightly with No. two piston bodies.Seal ring makes piston apparatus not have gas leakage out when mobile, serves seal action.

One end of breathing pipe of the present invention is fixed on the end of described suction tude near cylinder block, the other end of described breathing pipe is fixed on the sidewall of cylinder block near bottom end, and the distance between breathing pipe and cylinder block bottom is less than the distance between described steam outlet pipe and cylinder block bottom.When No. two piston bodies move the mouth of pipe of closed steam outlet pipe to exit orifice, the suction port that breathing pipe enters air cavity can not be closed.

The cross sectional area of a piston body of the present invention is less than the cross sectional area of No. two piston bodies.When No. two air cavitys are identical with No. three air cavity gas pressure intensities, in No. two air cavitys, air pressure area of contact is greater than air pressure area of contact in No. three air cavitys, in No. two air cavitys, the active force of gas is greater than the active force of gas in No. three air cavitys, and piston apparatus can successfully be moved to exit orifice direction.

Suction tude of the present invention, steam outlet pipe are identical with breathing pipe diameter, and the diameter of described piston air vent is 1/3rd of above-mentioned pipe diameter.The diameter of piston air vent is less than the diameter of other pipeline, serves the effect of current limliting and current stabilization, makes effluent air be steady instead of the air-flow of sharply speedup.

The volume of No. three air cavitys of the present invention is less than the volume sum of an air cavity and No. two air cavitys.

A piston of the present invention, piston body, No. two pistons and No. two piston bodies are integrally fixed.A piston apparatus and No. two piston apparatus fixed relationships firmly, not easily depart from, extend the working life of piston apparatus.

The present invention compared with prior art, has the following advantages and effect: structure is simple, reasonable in design; the air-flow that gas enters pneumatic actuator by device progressively increases, buffer gas active force, proterctive equipment; extension device working life the moment noise reduced when connecing gas, improve working environment.

Accompanying drawing explanation

Fig. 1 is the structural representation of the embodiment of the present invention.

Fig. 2 is the perspective view of the embodiment of the present invention.

Embodiment

Below in conjunction with accompanying drawing, also by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.

See Fig. 1 to Fig. 2, the present embodiment is arranged on the front end airflow mouth of the pneumatic actuator matched with it, comprises suction tude 1, cylinder block 2, breathing pipe 3, steam outlet pipe 4, piston apparatus 5, piston air vent 6, spring pad 7, spring 8 and seal ring 9.Wherein, piston apparatus 5 comprises the piston apparatus 51 be made up of a piston 511, piston body 512 and No. two piston apparatus 52 be made up of No. two pistons 521, No. two piston bodies 522.

Have air cavity 21 in cylinder block 2, and bottom is provided with exit orifice 22.Suction tude 1 is fixed on the top of cylinder block 2, steam outlet pipe 4 is fixed on cylinder block 2 sidewall, its position is near exit orifice 22, one end of breathing pipe 3 is fixed in suction tude 1, its position is positioned at the end that suction tude 1 connects cylinder block 2, and the other end of breathing pipe 3 is fixed on cylinder block 2 sidewall, and its position is near exit orifice 22, the position of breathing pipe 3 is relative with the position of steam outlet pipe 4, and the distance L1 between breathing pipe 3 and cylinder block 2 bottom is less than the distance L2 between steam outlet pipe 4 and cylinder block 2 bottom.Above-mentioned suction tude 1, air cavity 21, breathing pipe 3, steam outlet pipe 4 are interconnected, and suction tude 1 is provided with suction port 11, and steam outlet pipe 4 is provided with air outlet 41 and the mouth of pipe 42.

Piston apparatus 5 is arranged in the air cavity 21 of cylinder block 2, move in parallel in air cavity 21, a piston 511, piston body 512, No. two pistons 521 and No. two piston bodies 522 are integrally fixed successively, No. two piston bodies 522 pass outside cylinder block 2 by exit orifice 22, the shape size of a piston 511 and No. two pistons 521 coordinates with air cavity 21, air cavity 21 has been divided into from top to bottom an air cavity 211, No. two air cavitys 212 and No. three air cavitys 213.The volume of No. three air cavitys 213 is less than the volume sum of an air cavity 211 and No. two air cavitys 212.A piston body 512 and No. two piston bodies 522 are cylindrical, and a piston body 512 cross sectional area S1 is less than No. two piston body 522 cross sectional area S2.In addition, piston air vent 6 is provided with in a piston 511 and a piston body 512, be respectively a piston air vent 61 and No. two piston air vents 62, two piston air vents 6 are interconnected, its sectional shape is similar to T-shaped, a piston air vent 61 is communicated with an air cavity 211, and No. two piston air vents 62 are communicated with No. two air cavitys 212.

Suction tude 1, steam outlet pipe 4 are identical with breathing pipe 3 diameter D, and the diameter d of piston air vent 6 is 1/3rd of above-mentioned pipe diameter D, play the effect of a current limliting and current stabilization, and effluent air will be steady instead of the air-flow of sharply speedup.

Spring pad 7 and seal ring 9 are all fixed on exit orifice 22, and seal ring 9 is positioned on the right side of spring pad 7.One end of spring 8 is fixed on spring pad 7, and spring 8 is arranged in air cavity 1, and spring 8, spring pad 7 and seal ring 9 are all enclosed within outside No. two piston bodies 522, and wherein seal ring 9 and No. two piston bodies 522 fit tightly.

Left-right relation during said structure describes is the left-right relation shown in Fig. 1.

During use, gas under the influence of air pressure, enter this device from suction port 11, an air cavity 211 of breathing pipe 3 and cylinder block 2 is entered respectively by suction tude 1, an air cavity 211 of suction tude 1 end and cylinder block 2 is apart from closest, first gas enter an air cavity 211, and expand in an air cavity 211, No. two air cavitys 212 are entered from an air cavity 211 again by piston air vent 6, and the piston 511 promoting a piston apparatus 51 moves to exit orifice 22 direction, a piston apparatus 51 and No. two piston apparatus 52 are integrally fixed, No. two pistons 521 are also along with a piston 511 moves to exit orifice 22 direction, at No. two pistons 521 toward in the process of exit orifice 22 direction movement, No. two pistons 521 will progressively close the mouth of pipe 42 of steam outlet pipe 4.

The gas flowed through from breathing pipe 3 enters No. three air cavitys 213 of cylinder block 2, because air-flow enters the time of an air cavity 211 and No. two air cavitys 212 early than the time entering No. three air cavitys 213, piston apparatus 5 moves to exit orifice 22 direction, and make No. two pistons 521 semiclosed live the mouth of pipe 42 of steam outlet pipe 4, turn down steam outlet pipe 4, thus made the air-flow air pressure of outflow steam outlet pipe 4 be in less level.

Along with gas atmosphere increases, air-flow strengthens, and is first filled gas, and flows to No. two air cavitys 212 through piston air vent 6 in an air cavity 211.Volume due to No. three air cavitys 213 is less than the volume sum of an air cavity 211 and No. two air cavitys 212, and the air pressure of No. three air cavitys 213 is greater than the air pressure of No. two air cavitys 212, so piston apparatus 5 slows down to the speed of exit orifice 22 direction movement.No. three air cavity 213 internal air pressures increase, the air pressure that in chamber, air-flow is flowed out by steam outlet pipe 4 also increases gradually, but now the mouth of pipe 42 of steam outlet pipe 4 is semiclosed, the area that exposes of steam outlet pipe 4 mouth of pipe 42 reduces gradually, the air-flow size flowed out from steam outlet pipe 4 air outlet 41 can slowly be increased, can not increase rapidly, increase facility load.

A piston body 512 and No. two piston bodies 522 are cylindrical, and the cross sectional area S1 of a piston body 512 is less than the cross sectional area S2 of No. two piston bodies 522, and namely the lifting surface area on No. two piston 522 left sides is greater than the lifting surface area on No. two piston 522 right sides.

Relation according to pressure F and pressure P: F=PS (i.e. pressure equal pressure take advantage of area), when No. two piston 522 lifting surface areas of No. two air cavity 212 sides are greater than No. two piston 522 lifting surface areas of No. three air cavity 213 sides, when the air pressure of No. two air cavitys 212, No. three air cavitys 213 of No. two piston 522 both sides tends to balance gradually, No. two pistons 522 are subject to being greater than the active force that No. two pistons 522 are subject to suction tude 1 direction, i.e. F2>F3 to the active force in exit orifice 22 direction.Therefore, piston apparatus 5 continues to move to exit orifice 22 direction, and pressured spring 8, at piston apparatus 5 in the moving process of exit orifice 22 direction, No. two pistons 522 open steam outlet pipe 4 mouth of pipe 42 again by after the mouth of pipe 42 closing steam outlet pipe 4, and air-flow flows out to be converted to through steam outlet pipe 4 from No. three air cavitys 213 and flows out through steam outlet pipe 4 from No. two air cavitys 212.

After No. two piston 522 holddown springs 8, under spring 8 and the acting in conjunction of No. three air cavity 213 air pressure, the power suffered by No. two piston 522 both sides reaches balance, and piston apparatus 5 no longer moves to exit orifice 22 direction.

Air-flow finally enters from suction port 11, enters an air cavity 211 of cylinder block 2, then enters No. two air cavitys 212 by piston air vent 6, by steam outlet pipe 4, flow out from air outlet 41 through suction tude 1.

In addition, it should be noted that, the specific embodiment described in this specification, the shape, institute's title of being named etc. of its component can be different, and the above content described in this specification is only to structure example of the present invention explanation.The equivalence change that structure, feature and the principle of all foundations described in inventional idea of the present invention are done or simple change, be included in the protection domain of patent of the present invention.

Claims

1. an aerodynamic retarder, be arranged on the suction port of the pneumatic actuator matched with it, described aerodynamic retarder comprises suction tude, steam outlet pipe and cylinder block, described suction tude and steam outlet pipe are all fixed in described cylinder block, suction tude is positioned at the top of cylinder block, and steam outlet pipe is positioned at the position of cylinder block sidewall near bottom, has air cavity in described cylinder block, described suction tude, steam outlet pipe are all communicated with air cavity, it is characterized in that:

Aerodynamic retarder also comprises piston apparatus, breathing pipe and exit orifice, and one end of described breathing pipe is fixed in suction tude, and the other end is fixed on cylinder block sidewall, and breathing pipe is communicated with described suction tude, air cavity;

Described piston apparatus is arranged in air cavity, it comprises a piston apparatus and No. two piston apparatus, a described piston apparatus is made up of a piston and a piston body, No. two described piston apparatus are made up of No. two pistons and No. two piston bodies, and a described piston, piston body, No. two pistons and No. two piston bodies are fixed successively;

Described exit orifice is arranged on cylinder block bottom, and No. two described piston bodies pass outside cylinder block by exit orifice;

Described air cavity is divided into an air cavity, No. two air cavitys and No. three air cavitys by a described piston and No. two pistons; A described piston and a piston body all have piston air vent, and two piston air vents are interconnected, and a piston breathing pipe is communicated with described air cavity, and another piston air vent is communicated with described No. two air cavitys; Breathing pipe is communicated with No. three air cavitys;

Described piston air vent diameter is less than suction tude diameter, steam outlet pipe diameter and breathing pipe diameter;

The cross sectional area of a described piston body is less than the cross sectional area of No. two piston bodies;

The volume of described No. three air cavitys is less than the volume sum of an air cavity and No. two air cavitys.”

2. aerodynamic retarder according to claim 1, is characterized in that: described exit orifice is fixed with spring pad, and described spring pad is fixed with spring, and described spring is arranged in described air cavity, and spring and spring pad are all enclosed within outside No. two piston bodies.

3. aerodynamic retarder according to claim 1 and 2, is characterized in that: described exit orifice is also provided with seal ring, and seal ring is enclosed within outside No. two piston bodies, and fits tightly with No. two piston bodies.

4. aerodynamic retarder according to claim 1, it is characterized in that: one end of described breathing pipe is fixed on the end of described suction tude near cylinder block, the other end of described breathing pipe is fixed on the sidewall of cylinder block near bottom end, and the distance between breathing pipe and cylinder block bottom is less than the distance between described steam outlet pipe and cylinder block bottom.

5. aerodynamic retarder according to claim 1, is characterized in that: described suction tude, steam outlet pipe are identical with breathing pipe diameter, the diameter of described piston air vent be suction tude, steam outlet pipe, breathing pipe pipe diameter 1/3rd.

6. aerodynamic retarder according to claim 1, is characterized in that: a described piston, piston body, No. two pistons and No. two piston bodies are integrally fixed.