CN111927306B

CN111927306B - Large-aperture impactor with adjustable air inflow

Info

Publication number: CN111927306B
Application number: CN202010914456.4A
Authority: CN
Inventors: 师明辉; 吉伟; 刘轲
Original assignee: CHANGSHA TIANHE DRILLING TOOLS AND MACHINERY CO LTD
Current assignee: CHANGSHA TIANHE DRILLING TOOLS AND MACHINERY CO LTD
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2022-06-28
Anticipated expiration: 2040-09-03
Also published as: CN111927306A

Abstract

The utility model provides an adjustable large aperture impacter of air input, includes air inlet joint, steel ring, the check valve of transferring gas, O type sealing washer, outer cylinder, piston, retaining ring, bush, snap ring, calliper cover, air inlet joint is equipped with central gas pocket and side gas pocket, and air inlet joint one end is connected with outer drilling rod, and the centre is connected with the outer cylinder, the outer cylinder on be equipped with the outer cylinder gas pocket, the outer cylinder gas pocket is with air inlet joint's side gas pocket and piston gas tank intercommunication, through the check valve intercommunication of transferring gas between air inlet joint side gas pocket and the outer cylinder gas pocket, the check valve of transferring gas is the elastic component to be equipped with certain power of holding tightly, this device simple structure, can need self-adjusting impacter air input along with different stratum, aperture and hole depth, thereby reduce the energy consumption, reach energy saving and emission reduction's effect.

Description

Large-aperture impactor with adjustable air inflow

Technical Field

The invention relates to a large-aperture impactor with adjustable air inflow.

Background

The large-aperture down-the-hole drilling tool system is a high-efficiency high-quality hole forming operation technology commonly applied to the existing pile foundation engineering, but the conventional large-aperture down-the-hole drilling tool system is designed to adapt to different stratums, different hole depths and hole diameters as far as possible in the pile foundation construction to meet the slag discharge requirement.

Present large aperture impacter structure accessories are many and complicated for large aperture dive hole drilling tool system is in the work progress, and impacter accessories fragile, thereby causes impacter internal movement spare part card to die, leads to the unusual stop work of drilling tool system.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the air inflow adjustable large-aperture impactor which is simple in structure and can automatically adjust the air inflow of the impactor according to the requirements of different stratums, apertures and hole depths, so that the energy consumption is reduced, and the effects of energy conservation and emission reduction are achieved.

The invention is realized by adopting the following implementation scheme:

an adjustable large-aperture impactor of air inflow comprises an air inlet joint 1, an outer cylinder 5 and a piston 6, wherein the air inlet joint 1 is provided with a central air hole and a side air hole 11 communicated with the central air hole, the head end of the air inlet joint 1 is connected with an outer drill rod, the other end of the air inlet joint is inserted in the outer cylinder 5, the middle of the air inlet joint is hermetically connected with the outer cylinder 5, an outer cylinder air hole 51 is formed in the cylinder wall of the outer cylinder 5 along the axial direction, the side air hole 11 of the air inlet joint 1 is communicated with an air groove 61 of the piston 6 through the outer cylinder air hole 51, the air inlet joint 1 side air hole 11 is communicated with the outer cylinder air hole 51 through an air adjusting check valve 3, the air adjusting check valve 3 comprises a fixed end 31 and a valve end 32 connected with the fixed end, the fixed end 31 and the valve end 32 of the air adjusting check valve 3 are integrally formed into an annular elastic band, and the air adjusting check valve 3 is fixed on the air inlet joint 1 through the fixed end 31, the side air hole is sealed through the valve end 32, in an initial state, the valve end 32 of the air adjusting check valve 3 seals the outer side of the side air hole 11 under the action of elastic force to prevent air from entering the air inlet connector 1 from the outer cylinder air hole 51, in a working state, the valve end 32 is opened under the action of air inlet pressure of the air inlet connector 1, and the opening degree of the valve end 32 is matched with the air inlet pressure of the air inlet connector 1. Adopt above-mentioned mode, the gas regulating check valve is the elastic component, the cover is in the gas pocket of admission joint side on to be equipped with certain power of hugging closely, come control valve end aperture size to realize the impacter air input through the atmospheric pressure that admits air of difference, the structure of current check valve has been simplified like this, reduce the accessories error that many accessories combination brought, reach reinforcing impacter quality stability effect, reduce the manufacturing degree of difficulty and cost simultaneously, practice thrift the energy consumption, when the air inlet closes the high-pressure gas room, the valve end of gas regulating check valve has not had high-pressure gas's pushing action, hug closely the admission joint rapidly, play the effect that closes gas and prevent the sediment, consequently this device can be along with different stratums, the impacter air input is adjusted by oneself to aperture and bore depth needs, thereby reduce the energy consumption, reach energy saving and emission reduction's effect.

In this embodiment, the thickness of the fixed end of the air-adjusting check valve 3 is greater than the thickness of the valve end 32, so that the axial section of the air-adjusting check valve 3 forms a right trapezoid. The section form of the air adjusting check valve 3 enables the opening degree of the valve end to be proportional to the air inflow of high-pressure air during air inflow, and enables the air passage to return quickly to seal the air hole on the side of the air inlet joint 1 during air closing to prevent slag return.

In this embodiment, on the 1 lateral surface of air inlet joint, be equipped with positioning groove 12 along circumference, the medial surface of 3 stiff ends of accent gas check valve be equipped with positioning groove 12 assorted arch, the stiff end passes through the arch to be installed and realizes the axial positioning of accent gas check valve 3 in positioning groove 12. Therefore, the accuracy of the installation position of the air adjusting check valve is ensured, and the axial movement of the air adjusting check valve is prevented.

In this embodiment, the inner side surface of the outer cylinder 5 and the position corresponding to the valve end 32 of the air-regulating check valve 3 are provided with an inward concave limiting groove 52, the limiting groove 52 is communicated with the outer cylinder air hole 51, and the depth of the limiting groove 52 is used for limiting the maximum opening angle of the valve end 32.

In this embodiment, the tail end of the air inlet joint 1 is hermetically connected with the inner wall of the outer cylinder 5 through an O-ring.

In this embodiment, one end of the outer cylinder 5 is connected to the air inlet joint 1, the other end is connected to the caliper sleeve, and the piston 6 is installed in the outer cylinder 5 and is positioned on the outer cylinder 5 through the retainer ring 7, the bushing 8 and the snap ring 9.

In conclusion, the device is simple in structure, and the air inflow of the impactor can be automatically adjusted according to different stratum, aperture and hole depth requirements, so that the energy consumption is reduced, and the effects of energy conservation and emission reduction are achieved.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is an enlarged view of the air regulating check valve of the present invention.

In the attached drawing, the air inlet connector 1, the air inlet connector 11, the side air hole 12, the positioning groove 2, the steel ring 3, the air adjusting check valve 31, the fixed end 32, the valve end 4, the O-shaped sealing ring 5, the outer cylinder 51, the outer cylinder air hole 52, the limiting groove 6, the piston 61, the air groove 7, the retainer ring 8, the lining, 9, the snap ring 10 and the clamp sleeve.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

Example 1:

as shown in fig. 1 and 2, an air inflow adjustable large aperture impactor comprises an air inlet joint 1, a steel ring 2, an air adjusting check valve 3, an O-ring 4, an outer cylinder 5, a piston 6, a retainer ring 7, a bushing 8, a clamp ring 9 and a caliper sleeve 10, wherein the air inlet joint 1 is provided with a central air hole and a side air hole 11, one end of the air inlet joint 1 is connected with an outer drill rod, the middle of the air inlet joint is connected with the outer cylinder 5, the outer cylinder 5 is provided with an outer cylinder air hole 51, the side air hole 11 of the air inlet joint 1 is communicated with an air groove 61 of the piston 6 through the outer cylinder air hole 51, the air adjusting check valve 3 is arranged between the side air hole of the air inlet joint 1 and the air hole of the outer cylinder 5 and communicated with each other, the air adjusting check valve 3 is an elastic member and is provided with a certain holding force, the air adjusting check valve 3 comprises a fixed end 31 and a valve end 32 connected with the fixed end, the fixed end 31 and the valve end 32 of the air adjusting check valve 3 are integrally formed into an annular elastic band, transfer gas check valve 3 and fix on air inlet joint 1 through stiff end 31, will incline the gas pocket through valve end 32 and seal, the stiff end thickness of transferring gas check valve 3 is greater than valve end 32 thickness for the axial section of transferring gas check valve 3 forms right trapezoid. Transfer section form of gas check valve 3 makes when admitting air, and the size of the aperture of valve end is proportional with the high-pressure gas air input on the one hand, and on the other hand is when closing the gas, and the effect of the quick return seal air connector 1 side gas pocket of air flue prevents to return the sediment, on the 1 lateral surface of air connector, be equipped with positioning groove 12 along circumference, the medial surface of 3 stiff ends of transferring gas check valve is equipped with and positioning groove 12 assorted arch, the axial positioning who realizes transferring gas check valve 3 in positioning groove 12 is installed through the arch to the stiff end. Guarantee the accuracy of transferring gas check valve mounted position like this, prevent to transfer gas check valve axial removal, the medial surface of outer cylinder 5, with transfer gas check valve 3 valve end 32 position department of correspondence be equipped with the spacing groove 52 of indent, spacing groove 52 and outer cylinder gas pocket 51 intercommunication, the degree of depth of spacing groove 52 is used for injecing the maximum angle that valve end 32 opened.

In this embodiment, the head end of outer jar 5 is sealed through steel ring and air connector, the tail end of air connector 1 passes through O type sealing washer 4 and outer jar 5 inner wall sealing connection, air connector 1 is connected to outer jar 5 one end, and the other end is connected with calliper cover 10, piston 6 installs in outer jar 5 to be located outer jar 5 on through retaining ring 7, bush 8 and snap ring 9.

The specific working process is as follows:

when initial condition, the valve end 32 of adjusting gas check valve 3 seals the side gas pocket 11 outside under the elasticity effect, prevents that gas from outer jar gas pocket 51 entering air inlet joint 1, during operation, valve end 32 opens under the effect of air inlet joint 1 air inlet pressure, and the size that the valve of adjusting gas check valve 3 was opened is controlled to the air inlet pressure that admits air through the difference to realize the self-interacting of impacter air input, practice thrift the effect of energy consumption, close the high-pressure gas room as the air inlet simultaneously, adjust gas check valve 3 and hold tightly air inlet joint rapidly, play and close the effect that the sediment was prevented returning to the gas.

The above description is only illustrative of the specific embodiments of the present invention, and the scope of the present invention is not limited thereto. All equivalent changes and modifications made according to the claims and the content of the specification of the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides an adjustable large aperture impacter of air input, includes air inlet connector (1), outer jar (5) and piston (6), air inlet connector (1) is equipped with central gas pocket and with side gas pocket (11) of central gas pocket intercommunication, air inlet connector (1) head end is connected with outer drilling rod, other end cartridge in outer jar (5) and middle part and outer jar (5) sealing connection, its characterized in that: form outer cylinder gas pocket (51) along axial trompil in the jar wall of outer cylinder (5), outer cylinder gas pocket (51) communicate side gas pocket (11) of air connector (1) and gas tank (61) of piston (6), through transferring gas check valve (3) intercommunication between air connector (1) side gas pocket (11) and outer cylinder gas pocket (51), transfer gas check valve (3) including stiff end (31) and valve end (32) be connected with the stiff end, the stiff end (31) and the valve end (32) integrated into one piece of transferring gas check valve (3) form annular elastic webbing, transfer gas check valve (3) are fixed on air connector (1) through stiff end (31), seal side gas pocket through valve end (32), when initial condition, transfer gas check valve (3) valve end (32) with side gas pocket (11) outside seal under the spring action, the air is prevented from entering the air inlet connector (1) from the air hole (51) of the outer cylinder, in the working state, the valve end (32) is opened under the action of the air inlet pressure of the air inlet connector (1), and the opening degree of the valve end (32) is matched with the air inlet pressure of the air inlet connector (1); the thickness of the fixed end of the air-adjusting check valve (3) is larger than that of the valve end (32), so that the axial section of the air-adjusting check valve (3) forms a right-angled trapezoid.

2. The intake-air-quantity-adjustable large-aperture impactor according to claim 1, wherein: on air inlet joint (1) lateral surface, be equipped with positioning groove (12) along circumference, the medial surface of accent gas check valve (3) stiff end be equipped with positioning groove (12) assorted arch, the axial positioning of realizing accent gas check valve (3) in positioning groove (12) is installed through the arch to the stiff end.

3. The intake-amount-adjustable large-aperture impactor according to claim 1 or 2, wherein: the medial surface of outer jar (5), with accent gas check valve (3) valve end (32) position department of correspondence be equipped with spacing groove (52) of indent, spacing groove (52) and outer jar gas pocket (51) intercommunication, the degree of depth of spacing groove (52) is used for injecing the biggest angle that valve end (32) opened.

4. The intake-air-quantity-adjustable large-aperture impactor according to claim 3, characterized in that: the tail end of the air inlet joint (1) is hermetically connected with the inner wall of the outer cylinder (5) through an O-shaped sealing ring.

5. The intake-air-quantity-adjustable large-aperture impactor according to claim 3, characterized in that: outer jar (5) one end is connected air inlet joint (1), and the other end is connected with the caliper cover, piston (6) are installed in outer jar (5) to be located through retaining ring (7), bush (8) and snap ring (9) outer jar (5) on.