CN2510180Y

CN2510180Y - Pneumatic vibration exciter

Info

Publication number: CN2510180Y
Application number: CN 01280167
Authority: CN
Inventors: 赵克猛
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-31
Filing date: 2001-12-31
Publication date: 2002-09-11
Anticipated expiration: 2011-12-31

Abstract

The utility model discloses an air-actuated vibration generator composed of a big cylinder, a top cover and a foundation, characterized in that a piston is arranged in the big cylinder, and a valve core and a control piston constitute a change-over valve., thereby the change-over valve and the piston become one and the travel length of the change-over valve core similitude with the travel length of the piston. The utility model has the advantages of strong vibrating power, little noise, being capable of erecting and applying in arbitrary directions and having wide range of use.

Description

A kind of pneumatic vibrator

One, technical field

The utility model belongs to the pneumatic equipment technical field, especially relates to a kind of pneumatic vibrator.

Two, background technology

Our employed vibrator has multiple at present, in pneumatic vibrator, generally be to adopt gap sealed structure, the vibrator of this structure do not have inertial acceleration, thereby exciting force is little because the commutation stroke is short, certain operating angle is arranged when installing and using simultaneously, otherwise can't use, the scope of application is narrower, and using value is little.

Three, summary of the invention

The purpose of this utility model is to improve the deficiency of prior art and the pneumatic vibrator that a kind of exciting force is big, noise is little, can install and use in any direction is provided.

The purpose of this utility model is to realize like this, a kind of pneumatic vibrator, be by big cylinder barrel, loam cake and base are formed, be characterized in that the bottom at big cylinder barrel is little cylinder barrel, little cylinder barrel is provided with and the extraneous exhaust duct that communicates, another opening of exhaust duct is positioned at little cylinder barrel upper surface and communicates with big cylinder barrel internal cavity, be provided with piston in big cylinder barrel top and the little cylinder barrel center cavity, the piston center is provided with cavity, cavity is divided into three parts, the bar of deciding that is fixed on the base extend in the cavity bottom, spool extend in the three part cavitys of cavity, the lower surface of spool is provided with groove, the middle part of spool is positioned at the diameter of part of cavity less than the diameter at two ends, the bottom of cavities and middle part are fixed with sealing ring and combine closely with the lower end and the middle part of spool respectively in cavity, respectively be provided with a spacer up and down at the intermediate seal circle, following spacer is provided with opening and communicates with air flue on the piston, the other end opening of air flue is positioned at piston top, be provided with the control cover in the upper cavity of cavity, control cover top is provided with pore, control cover inner chamber is communicated with big inner cavity of cylinder, be provided with " ⊥ " shape control piston in the control cover, the bottom of control piston contacts with the top of spool, the head of control piston passes cavity and reaches in the big cylinder barrel upper cavity, on piston body, be provided with another air flue, one end opening of air flue communicates on spacer on the piston cavity and with cavity, it is corresponding with exhaust duct opening on the little cylinder barrel that another opening is positioned at piston lower surface, between between piston bottom and little inner wall of cylinder and top and big inner wall of cylinder, be provided with sealing ring, also be provided with support ring between piston top and big inner wall of cylinder, base is provided with air admission hole and communicates with cavity.

In order further to realize the purpose of this utility model, can also be that the lower seal circle of cavities in described piston has pad.

Compared with the prior art the utility model has following distinguishing feature and good effect: internal piston is equipped with the reversal valve of control piston and spool composition, reversal valve and piston are combined together, the stroke of change-over valve core and the stroke of piston are changed on year-on-year basis, improved the exciting performance greatly, because two of device existence are differential, can install in any direction, not be subjected to the restriction of working environment, improve range of application greatly.

Four, description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is an another kind of structural representation of the present utility model.

Five, specific embodiments

Embodiment 1, a kind of pneumatic vibrator, with reference to Fig. 1, Fig. 2, be the two ends up and down that loam cake 2 and base 3 are fixed on big cylinder barrel 1, form enclosed cavity, bottom at big cylinder barrel 1 internal cavity is little cylinder barrel 4, little cylinder barrel 4 bodies are provided with and the extraneous exhaust duct 5 that communicates, another opening of exhaust duct 5 is positioned at little cylinder barrel 4 upper surfaces and communicates with big cylinder barrel 1 internal cavity, be provided with piston 6 in big cylinder barrel 1 top and little cylinder barrel 4 center cavities, piston 6 centers are provided with cavity 7, cavity 7 is divided into three parts, the bar 8 of deciding that is fixed on the base 3 extend in cavity 7 bottoms, spool 9 extend in the three part cavitys of cavity 7, the lower surface of spool 9 is provided with groove 18, the middle part of spool 9 is positioned at the diameter of part of cavity 7 less than the diameter at two ends, the bottom of cavities and middle part are fixed with sealing ring 10 and combine closely with the lower end and the middle part of spool 9 respectively in cavity 7, respectively be provided with a spacer 11 up and down at intermediate seal circle 10, following spacer 11 is provided with opening and communicates with air flue 12 on the piston 6, the other end opening of air flue 12 is positioned at piston 6 tops, be provided with control cover 13 in the upper cavity of cavity 7, control cover 13 tops are provided with pore 20, control cover 13 inner chambers are communicated with big cylinder barrel 1 inner chamber, be provided with " ⊥ " shape control piston 14 in the control cover 13, the bottom of control piston 14 contacts with the top of spool 9, the head of control piston 14 passes cavity 7 and reaches in big cylinder barrel 1 upper cavity, on piston 6 bodies, be provided with another air flue 21, one end opening of air flue 21 communicates on spacer 11 on piston 6 cavitys and with cavity, it is corresponding with exhaust duct 5 openings on the little cylinder barrel 4 that another opening is positioned at piston 6 lower surfaces, between between piston 6 bottoms and little cylinder barrel 4 inwalls and top and big cylinder barrel 1 inwall, be provided with sealing ring 15, between piston 6 tops and big cylinder barrel 1 inwall, also be provided with support ring 16, base 3 is provided with air admission hole 17 and communicates with cavity 7, and this has constituted a kind of static structure of the present utility model.

Embodiment 2, and a kind of pneumatic vibrator with reference to Fig. 3, is on the basis of embodiment 1, and cavities lower seal circle 10 has pad 19 in cavity 7, and other are identical with embodiment 1.

Operation principle of the present utility model is such, spool 9 has sealed the opening on the spacer 11 of air flue 12, opened the opening on the spacer 11 of air flue 21, first from the gas that air admission hole 17 is come in spool 9, control piston 14 upwards pushes away, and open opening on the spacer 11 of air flue 12, the gas pressurized of big cylinder barrel 1 internal upper part cavity is by air flue 12, piston 6 internal cavities, air flue 21, exhaust duct 5 is discharged outside the big cylinder barrel 1, the match 6 of then living moves upward under the effect of air pressure, at first control piston 14 is run into loam cake 2 transfixions, piston 6 continues to move to the upper end, this moment spool 9 complete closed the opening on the spacer 11 of air flue 21, opened the opening on the spacer 11 of air flue 12, gas just enters big cylinder barrel 1 upper cavity from air flue 12, because differential principle, under the effect of gas differential pressure, piston 6 and control piston 14 move downward, sealed the opening on the spacer 11 of air flue 12 up to spool 9, opened the opening on the spacer 11 of air flue 21, because the piston 6 in the big cylinder barrel 1, spool 9, control piston 14 constantly motion switches, and this device is constantly motion just.

Claims

1, a kind of pneumatic vibrator, be by big cylinder barrel (1), loam cake (2) and base (3) are formed, it is characterized in that the bottom at big cylinder barrel (1) is little cylinder barrel (4), little cylinder barrel (4) body is provided with and the extraneous exhaust duct (5) that communicates, another opening of exhaust duct (5) is positioned at little cylinder barrel (4) upper surface and communicates with big cylinder barrel (1) internal cavity, be provided with piston (6) in big cylinder barrel (1) top and little cylinder barrel (4) center cavity, piston (6) center is provided with cavity (7), cavity (7) is divided into three parts, the bar (8) of deciding that is fixed on the base (3) extend in cavity (7) bottom, spool (9) extend in the three part cavitys of cavity (7), the lower surface of spool (9) is provided with groove (18), the middle part of spool (9) is positioned at the diameter of part of cavity (7) less than the diameter at two ends, the bottom of cavities and middle part are fixed with sealing ring (10) and combine closely with the lower end and the middle part of spool (9) respectively in cavity (7), respectively be provided with a spacer (11) up and down at intermediate seal circle (10), following spacer (11) is provided with opening and communicates with air flue (12) on the piston (6), the other end opening of air flue (12) is positioned at piston (6) top, be provided with control cover (13) in the upper cavity of cavity (7), control cover (13) top is provided with pore (20), control cover (13) inner chamber is communicated with big cylinder barrel (1) inner chamber, be provided with " ⊥ " shape control piston (14) in the control cover (13), the bottom of control piston (14) contacts with the top of spool (9), the head of control piston (14) passes cavity (7) and reaches in big cylinder barrel (1) upper cavity, on piston (6) body, be provided with another air flue (21), one end opening of air flue (21) upward and with cavity communicates at the last spacer (11) of piston (6) cavity, it is corresponding with exhaust duct (5) opening on the little cylinder barrel (4) that another opening is positioned at piston (6) lower surface, between between piston (6) bottom and little cylinder barrel (4) inwall and top and big cylinder barrel (1) inwall, be provided with sealing ring (15), also be provided with support ring (16) between piston (6) top and big cylinder barrel (1) inwall, base (3) is provided with air admission hole (17) and communicates with cavity (7).

2, a kind of pneumatic vibrator according to claim 1 is characterized in that cavities lower seal circle (10) has pad (19) in described cavity (7).