CN202299440U

CN202299440U - Buffer device capable of reducing concrete spraying pulse

Info

Publication number: CN202299440U
Application number: CN201120388957XU
Authority: CN
Inventors: 欧阳绪荣
Original assignee: Feny Co Ltd
Current assignee: Feny Co Ltd
Priority date: 2011-10-13
Filing date: 2011-10-13
Publication date: 2012-07-04
Anticipated expiration: 2021-10-13

Abstract

The utility model relates to a buffer device capable of reducing a concrete spraying pulse. The buffer device comprises an air material chamber and a buffer chamber, wherein the air material chamber comprises a material outlet end, an air inlet taper pipe and a material inlet connector; one end of the buffer chamber is radially connected and communicated with the air material chamber, and the other end of the buffer chamber is provided with a concrete piston and a spring seat for sealing the end part of the buffer chamber; one end of the concrete piston is provided with a sealing member sealed with the inner wall of the buffer chamber, and the middle part of the other end of the concrete piston is provided with a groove which can be inserted with the spring seat and is corresponding to the position of the spring seat; and the bottom of the groove of the concrete piston is connected with the compression spring arranged in the spring seat. According to the buffer device, due to the reduction of the concrete spraying pulse, the concrete spraying quality is improved, and the usage cost is reduced while the rebound ratio is reduced.

Description

Can reduce the buffer of sprayed mortar pulse

Technical field

The utility model relates to a kind of buffer, particularly a kind of buffer that reduces the sprayed mortar pulse.

Background technology

The application of wet concrete sprayer (being called for short the wet shot machine) at present more and more widely.Because pumping formula concrete spraying machine (or claiming plunger type or piston type concrete spraying machine) is more farther than rotator type concrete spraying machine fed distance, so the demand of pumping formula concrete spraying machine is also increasing.

The pump section of pumping formula concrete spraying machine is divided at present extensively employing double-cylinder hydraulic piston type; Its operating principle is: drive hydraulic pump works by power section; The pressure oil that is produced by hydraulic pump again drives two master cylinders and moves simultaneously, and one of them master cylinder advances, and another master cylinder is then retreated; The piston that the main oil cylinder piston bar drives respectively in two transmission and concrete transmission cylinders produces reciprocating motion; When a master cylinder advanced to end of travel, another master cylinder retreated into end of travel, and so latter two master cylinder suspends the switching-over of a period of time wait distributing valve; Put the valve oil cylinder this moment and begin action, drive the distributing valve action that is attached thereto, when the distributing valve switching-over put in place, two master cylinders began to do counter motion.Move in circles like this, make concrete constantly be inhaled into the conveying cylinder, and another carries the concrete in the cylinder to be pushed in the conveyance conduit from hopper.

And the operating principle of pumping formula wet shot machine is: compressed air ejects the above-mentioned concrete that is pushed in the conveyance conduit from shower nozzle.

By on can know that there is brief stay in master cylinder when distributing valve commutates, be not push concretely at this moment, so the operating principle of pumping formula wet shot machine has determined the discontinuity of transmission and concrete transmission and injection, it is inevitable pulsation phenomenon occurring.Quality when this pulsation will influence the concrete injection, and cause rebound degree to increase, thus influence workmanship, increase use cost.

The utility model content

The purpose of the utility model is to overcome the deficiency of prior art and provides a kind of simple in structure, has improved concrete jet quality, has reduced rebound degree, has reduced the buffer of the reduced sprayed mortar pulse of use cost.

A kind of buffer that reduces the sprayed mortar pulse; Comprise gas material chamber; Said gas material chamber comprises discharge end, air intake Taper Pipe and charging interface, also comprises surge chamber, and an end of said surge chamber radially is connected with said gas material chamber and communicates; The other end is equipped with the spring base of concrete piston and sealing surge chamber end; One end of said concrete piston is equipped with the seal with said surge chamber inner wall sealing, but the middle part of the other end be provided with the said spring base of plug-in mounting and with said spring base position corresponding groove, the bottom portion of groove of said concrete piston is connected with the compression spring that is installed in the said spring base.

In the utility model, said spring base is provided with the through hole that makes that surge chamber is in communication with the outside, and said through hole is provided with the air filter of the said through hole of sealing.

In the utility model, said spring base interior extremity is provided with regulating piston, and an end of said regulating piston is equipped with said compression spring, and the other end adjusting screw mandrel outer with being installed in said spring base is connected.

Adopt such scheme, the utility model is kept in a part of concrete material in the continuous pusher stage, and at the pusher pause stage; Temporary concrete material is replenished into; Thereby guaranteed at every moment to have in the concrete duct material supply, thereby reached the purpose that reduces the sprayed mortar pulse, owing to reduced the pulse of sprayed mortar; And then improved concrete jet quality, reduce rebound degree and reduced use cost simultaneously.

Description of drawings

Fig. 1 is that the concrete piston of the utility model is in the initial position sketch map when filling material.

Fig. 2 is that the concrete piston of the utility model is in position (also being simultaneously the original position that the discharges material) sketch map when being full of material.

The specific embodiment

Below in conjunction with accompanying drawing, specify the specific embodiment of the utility model.

In conjunction with Fig. 1, Fig. 2, the utility model comprises gas material chamber 1, concrete piston 2, surge chamber 3, spring base 4, compression spring 5, regulating piston 6, regulates screw mandrel 7, air filter 8, air intake Taper Pipe 9, and seal be connected securing member etc.Axial end along said gas material chamber 1 is connected with said air intake Taper Pipe 9, and it is connected with compressed air hose, and the other end is discharge end C, and it is connected with discharge nozzle; Radially have two interfaces, one of which is charging interface B, and it is connected with feed duct, another radially interface be connected with surge chamber 3; Surge chamber 3 one ends connect gas material chamber 1; The other end connects spring base 4 and air filter 8; Two ends all are equipped with seal; Concrete piston 2 is installed in the surge chamber 3, between concrete piston 2 and surge chamber 3 inner chambers seal is installed also, air filter 8 makes an end and the atmosphere of surge chamber; Compression spring 5 and regulating piston 6 are installed in the spring base 4, and regulating piston 6 one ends are conditioned screw mandrel 7 and hold out against, and regulate screw mandrel 7 position adjustments and use nut check in the back well, regulate the pretightning force that screw mandrel 7 is used to regulate compression spring 5.

Said surge chamber 3 can be vertical with said gas material chamber 1 axis, also can out of plumb.

Said surge chamber 3 intracavity sections can be circular, also can be oval, rectangle, square, perhaps other shape.

Said air intake Taper Pipe 9, said surge chamber 3 are selected from syndeton between the said gas material chamber 1 and are threaded, flange is connected, at least a in the clamp connection, welding.

The operating principle of the utility model is summarized as follows:

In the continuous pusher stage, wherein a part of concrete material is urged into temporary transient storage the in the surge chamber 3 under the acting in conjunction of compressed air and pumping pressure; At the pusher pause stage; There is not pumping pressure this moment; The concrete material of being kept in; Under the effect of the pre-compression force that compresses spring 5 (the compression spring will overcome compressed-air actuated active force simultaneously), through concrete piston 2 concrete material is pushed in the gas material chamber 1 again, be compressed air then and be blown into shower nozzle.

Through regulating screw mandrel 7, can regulate the pre compressed magnitude of compression spring 5, thus the size of regulating its pre-compression force.

Claims

1. buffer that can reduce the sprayed mortar pulse; Comprise gas material chamber; Said gas material chamber comprises discharge end, air intake Taper Pipe and charging interface, it is characterized in that: also comprise surge chamber, an end of said surge chamber radially is connected with said gas material chamber and communicates; The other end is equipped with the spring base of concrete piston and sealing surge chamber end; One end of said concrete piston is equipped with the seal with said surge chamber inner wall sealing, but the middle part of the other end be provided with the said spring base of plug-in mounting and with said spring base position corresponding groove, the bottom portion of groove of said concrete piston is connected with the compression spring that is installed in the said spring base.

2. the buffer that reduces the sprayed mortar pulse according to claim 1 is characterized in that: said spring base is provided with the through hole that makes that surge chamber is in communication with the outside, and said through hole is provided with the air filter of the said through hole of sealing.

3. the buffer that reduces the sprayed mortar pulse according to claim 1 and 2; It is characterized in that: said spring base interior extremity is provided with regulating piston; One end of said regulating piston is equipped with said compression spring, and the other end adjusting screw mandrel outer with being installed in said spring base is connected.