CN107030615B

CN107030615B - Aluminum profile shot blasting machine polishing head

Info

Publication number: CN107030615B
Application number: CN201710405330.2A
Authority: CN
Inventors: 潘永源
Original assignee: Foshan Zhongfu Machinery Equipment Co ltd
Current assignee: Foshan Zhongfu Machinery Equipment Co ltd
Priority date: 2017-06-01
Filing date: 2017-06-01
Publication date: 2023-04-14
Anticipated expiration: 2037-06-01
Also published as: CN107030615A

Abstract

The invention discloses an aluminum profile shot blasting machine head, which comprises a gun cover, a wool felt seal, a gun shell, a main shaft, an oil seal, a spiral groove seal, trapezoidal plates A and B and an injection chamber, wherein the gun cover and the gun shell are fixedly connected with the gun shell, an impeller is arranged in the injection chamber of the gun shell, a sand distribution sleeve is arranged below the gun shell, the sand distribution sleeve extends into an impeller hole of the injection chamber, a main shaft of a spray gun extends into the injection chamber of the gun shell from the other end, and the front end of the main shaft is provided with the impeller. The invention has simple structure, prolongs the service life of the polishing head, adopts the dry felt ring seal and utilizes the seal structure combining the permanent spiral sand throwing groove and the skeleton oil seal to effectively prevent sand dust from entering the bearing, and the sand blasting replaces the acid sand process, thereby reducing the aluminum consumption, effectively eliminating the mechanical lines on the surface of the aluminum profile, reducing the production cost, improving the surface quality of the profile, solving the problem of treating fluorine in the wastewater, being capable of continuously using the polishing head for a long time, having lower maintenance cost and greatly improving the sealing performance of the injection chamber.

Description

Aluminum profile shot blasting machine polishing head

Technical Field

The invention relates to the field of shot blasting machines, in particular to a polishing head of an aluminum profile shot blasting machine.

Background

The jet chamber of the throwing head of the shot blasting machine introduced from abroad is an arc-shaped top plate and fan-shaped side plates with arc tops at two sides form a dome inverted fan-shaped jet chamber, the part is produced by precisely cast high-carbon high-chromium wear-resistant alloy cast iron, but the part produced by domestic wear-resistant cast iron has the advantages that the content of carbon and chromium cannot meet the requirement of an imported sample in composition, the density is low, the hardness is low after heat treatment, the deformation is large, the rejection rate such as explosion is high, the service life is short, the sealing performance of the jet chamber is poor, the processing difficulty of the part after heat treatment is high, in addition, the jet chamber of the throwing head produced from abroad is separated from the bearing seat, so that dust flying out from the jet chamber cannot directly enter the bearing seat, but the supporting point of the impeller and the bearing seat is far, the rigidity is poor, and large vibration can be generated after the impeller or an impeller body is abraded, therefore, the maintenance frequency and the maintenance cost of the throwing head are high. Therefore, the aluminum profile shot blasting machine polishing head is provided.

Disclosure of Invention

The invention mainly aims to provide a shot-blasting head of an aluminum profile shot-blasting machine, which has a simple structure, a bearing seat is directly connected with a gun shell to increase the rigidity of the shot-blasting head, a dry felt ring is adopted for sealing, and a sealing structure combining a permanent spiral sand throwing groove and a framework oil seal is utilized, so that the sealing performance of the bearing seat is greatly improved, although a spray gun is installed, the central line of the bearing seat inclines downwards by about 20 degrees, sand dust is still effectively prevented from entering the bearing, the shot-blasting head can be continuously used for a long time, and the maintenance cost is low. The sand blasting process is used for replacing a sand pickling process, so that the aluminum consumption is reduced from 9-11 per mill to 1 per mill, meanwhile, the mechanical lines on the surface of the aluminum profile are effectively eliminated, the production cost is reduced, the surface quality of the profile is improved, and the problem of treatment of fluorine in wastewater is solved. The throwing head has good performance, can be continuously used for a long time, and has lower maintenance cost, thereby replacing an imported throwing head. The aluminum profile shot blasting machine assembled by the shot blasting head at home accounts for more than 90 percent of the aluminum profile shot blasting machines, and the shot blasting head and the aluminum profile shot blasting machine assembled by the shot blasting head are exported to Europe, the middle east, africa and countries in southeast Asia.

In order to achieve the purpose, the invention provides the following technical scheme: an aluminum profile shot blasting machine head, comprising: the gun shell comprises a gun shell top cover, a gun shell front cover, a gun shell, a trapezoidal plate A, a trapezoidal plate B, a circumferential top guard plate arranged above the trapezoidal plate and circumferential side guard plates on two sides of the trapezoidal plate, wherein the circumferential top guard plate and the circumferential side guard plates on two sides of the trapezoidal plate form an injection chamber;

the gun shell front cover is provided with a sand separating sleeve, the sand separating sleeve extends into the impeller hole so as to distribute sand flow to the blades during work, the outer end face of a sand separating claw connected with the impeller is provided with a sand separating claw spiral groove, and the outer end face and the bearing seat front end cover form non-contact sealing. When the impeller rotates, the sand separating claw spiral groove generates outward thrown airflow to throw out sand dust, a circle of sand separating claw felt groove is further arranged on the end face inside the sand separating claw spiral groove on the outer end face of the sand separating claw, and a felt sealing ring in the groove is in contact with the front end cover of the bearing seat to form dry felt ring sealing. In the front end cover of the bearing seat, a framework oil seal is arranged in front of a front bearing of the main shaft 16, and a third layer of protection is carried out on the front bearing of the main shaft.

Preferably, the other end of the bearing seat is provided with a belt pulley.

Preferably, an intermediate oil seal is arranged between the main shaft and the front bearing, and a rear oil seal is arranged between the rear bearing and the rear end cover.

Preferably, the front end cover of the bearing seat is made of alloy die steel and extends into the middle hole of the trapezoidal plate to form a wear-resistant part at the mandrel part in the jet chamber, so that the end face of the bearing seat is effectively protected; the impeller is arranged at the front end of a main shaft of the jet chamber, blades in the impeller are 10mm higher than the outer edge of the impeller, and the gap between the end face of a sand separating claw on the impeller and the end face of a front end cover of a bearing seat is 0.7-1.0mm.

Compared with the prior art, the invention has the following beneficial effects:

1. this kind of aluminium alloy shot-blasting machine throws head, pass through the circumference backplate roof that the tenon formula connecting piece is connected through the circumference backplate curb plate that utilizes injection chamber both sides, thereby make the parts machining assembly very simple, and trapezoidal plate roof and curb plate all adopt alloy tool steel sheet to enclose to close, hardness after the thermal treatment processing has been improved, wearability and life have been increased, diameter is greater than both sides impeller diameter when the inside blade of impeller is rotatory, when the spray gun is installed in the lower chamber, because bearing frame and horizontal plane have a down dip about 20 degrees, shot and dust can flow in naturally in the clearance of impeller rear end face and bearing frame front end face, at this moment, the blade can throw away the sand dust with branch sand claw end helicla flute. The blades throw away steel shots in the cavity, the abrasion of the excircle of the impellers on two sides is reduced, and simultaneously, in the working process of the shot blasting machine, the gun shell is connected with the bearing seat through the direct-connection type connecting piece, so that the structural tightness between the jet chamber and the bearing seat is enhanced, the connection rigidity between the projectile head shell and the bearing seat is enhanced,

2. the spiral groove that the utilization is connected with the impeller divides sand claw outside terminal surface to set up is sealed with the felt of inside setting sealed, and the skeleton oil blanket that sets up in the bearing frame front end housing seals, has adopted dry-type felt circle sealed like this and has utilized the forever science spiral to get rid of the seal structure of sand groove and the triple combination of skeleton oil blanket, and inside the effectual sand dust that prevents got into the bearing for the head of throwing reaches continuous use more than 18 months, exempts from the maintenance function. The motor directly drives the belt pulley to operate, and the invention has simple structure and prolongs the service life of the polishing head.

Drawings

FIG. 1 is a schematic cross-sectional view of the structure of the present invention;

FIG. 2 is a schematic view of the trapezoidal plate B and the circumferential guard plate of the present invention;

FIG. 3 is a schematic view of an oil seal structure of the present invention;

FIG. 4 is a schematic view of the impeller and the rotating direction structure of the impeller according to the present invention;

in the figure: the sand separation device comprises a gun shell top cover (1), a gun shell front cover (2), a gun shell (3), a trapezoidal plate A (4), a trapezoidal plate B (5), a circumferential top guard plate (6), circumferential two side guard plates (7-8), an impeller (9), blades (10), a sand separation claw (11), a sand separation claw felt ring (12), a sand separation claw spiral groove (13), a bearing seat front end cover (14), a bearing seat (15), a main shaft (16), a framework oil seal (17), a front bearing (18), a middle oil seal (19), a rear bearing (20), a rear end cover (21), a rear oil seal (22), a belt pulley (23) and a sand separation sleeve (24).

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an aluminum profile shot blasting machine head, comprising: the gun shell comprises a gun shell top cover 1, a gun shell front cover 2, a gun shell 3, a trapezoidal plate A4, a trapezoidal plate B5, a circumferential top guard plate 6 arranged above the trapezoidal plate and circumferential side guard plates 7-8 arranged at two sides of the trapezoidal plate, wherein the circumferential top guard plate 6 and the circumferential side guard plates 7-8 form an injection chamber, a bearing seat 15 is directly connected to the gun shell 3, a main shaft 16 of the bearing seat 15 extends into the injection chamber, and an impeller 9 is assembled at the front end of the main shaft;

the gun shell front cover 2 is provided with a sand separating sleeve 24 which extends into the hole of the impeller 9 so as to distribute sand flow to the blade 10 when in work, the outer end surface of a sand separating claw 11 connected with the impeller is provided with a sand separating claw spiral groove 13, and the outer end surface and the bearing seat front end cover 14 form non-contact sealing. When the impeller 9 rotates, the sand separation claw spiral groove 13 generates an outward thrown airflow to throw out sand dust, a circle of sand separation claw felt groove 12 is further arranged on the end face inside the sand separation claw spiral groove 13 on the outer end face of the sand separation claw 11, and a felt sealing ring in the groove is in contact with a front end cover 14 of the bearing seat to form dry type felt ring sealing. In the front end cover 14 of the bearing seat, a framework oil seal 17 is arranged in front of a front bearing 18 of a main shaft 16, and the front bearing 18 of the main shaft is protected by a third layer.

The other end of the bearing seat 15 is provided with a belt pulley 23.

An intermediate oil seal is arranged between the main shaft 16 and the front bearing 18, and a rear oil seal 22 is arranged between the rear bearing 20 and the rear end cover 21.

The front end cover 14 of the bearing seat is made of alloy die steel and extends into the middle hole of the trapezoidal plate B5 to form a wear-resistant part at the mandrel part in the jet chamber, so that the end face of the bearing seat is effectively protected; the impeller 9 is arranged at the front end of a main shaft of the jet chamber, blades 10 in the impeller 9 are 10mm higher than the outer edge of the impeller 9, and the gap between the end face of a sand separation claw on the impeller 9 and the end face of a front end cover of a bearing seat is 0.7-1.0mm.

This kind of aluminium alloy shot-blasting machine throws head, pass through the circumference backplate roof that the tenon formula connecting piece is connected through the circumference backplate curb plate that utilizes injection chamber both sides, thereby make the parts machining assembly very simple, and convenience, and trapezoidal plate roof, the part in curb plate and the injection chamber all adopts alloy tool steel to make, hardness after the thermal treatment processing has been improved, wearability and life have been increased, diameter is greater than both sides impeller diameter when the blade of impeller inside is rotatory, when the spray gun is installed in the lower chamber, because the bearing frame has a down dip with the horizontal plane about 20 degrees, during steel shot and dust can naturally flow in the clearance of impeller rear end face and bearing frame front end face, at this moment the blade can throw away the sand dust with minute sand claw end helicla flute. The blade gets rid of the shot of intracavity, the both sides impeller excircle wearing and tearing have been reduced, simultaneously in shot-blasting machine working process, and be connected through the associated mode connecting piece at the gun shell with the bearing frame, thereby the structure compactness between injection chamber and the bearing frame has been increaseed, the rigidity of throwing head casing and bearing frame connection has been increased, utilize simultaneously that the helicla flute that divides sand claw outside terminal surface setting to be connected with the impeller seals with the felt of inside setting sealed, and the skeleton oil blanket that sets up in the bearing frame front end housing seals, the sealed seal structure that utilizes forever science spiral to get rid of sand groove and skeleton oil blanket three combinations has been adopted like this to dry felt circle, inside the effectual sand dust that prevents gets into the bearing, make the head of throwing reach continuous use more than 18 months, exempt from the maintenance function. The motor directly drives the belt pulley to operate, and the invention has simple structure and prolongs the service life of the polishing head.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An aluminium alloy shot-blasting machine throws head, includes: gunlock top cap (1), gunlock protecgulum (2), gunlock (3), trapezoidal plate A (4), trapezoidal plate B (5), its characterized in that: the circumference top guard plate (6) arranged above the trapezoidal plate A (4) and the trapezoidal plate B (5) and the circumference side guard plates (7-8) at the two sides of the trapezoidal plate A (4) and the trapezoidal plate B (5) form an injection chamber, all parts forming the injection chamber are made of Cr12MoV alloy die steel and become the high-hardness and high-wear-resistance injection chamber after heat treatment, the bearing block (15) is directly connected to the gun shell (3), the main shaft (16) of the bearing block (15) extends into the injection chamber, and the front end of the main shaft is provided with an impeller (9);

a sand separating sleeve (24) is arranged on a gun shell front cover (2), the sand separating sleeve extends into a hole of an impeller (9) so as to distribute sand flow to blades (10) during working, a sand throwing spiral groove (13) is arranged on the outer end surface of a sand separating claw (11) which is made of Cr12MoV alloy die steel and connected with the impeller, the outer end surface and a bearing seat front end cover (14) made of Cr12MoV alloy die steel form non-contact sealing, when the impeller (9) rotates, the sand separating claw spiral groove (13) generates outward throwing air flow to throw sand dust outwards, a circle of sand separating claw felt groove (12) is further arranged on the end surface inside the sand separating claw spiral groove (13) on the outer end surface of the sand separating claw (11), a dry felt ring seal is formed by contacting with the bearing seat front end cover (14), a front bearing framework (18) of a main shaft (16) is arranged in front of the bearing seat front end cover (14), a belt pulley (23) is arranged at the other end of the bearing seat (15), an oil seal is arranged between the main shaft (16) and a middle bearing (18), and a rear bearing (21) is arranged between the rear end cover (21) and a rear bearing (21);

the front end cover (14) of the bearing seat is made of Cr12MoV alloy die steel and extends into the middle hole of the trapezoidal plate B (5) to form a wear-resistant part at the position of a mandrel in the jet chamber, so that the end surface of the bearing seat is effectively protected; an impeller (9) made of Cr12MoV alloy die steel is arranged at the front end of a main shaft of the injection chamber, blades (10) in the impeller (9) are made of Cr12MoV alloy die steel and are 10mm higher than the outer edge of the impeller (9), and the gap between the end surface of a sand separating claw on the impeller (9) and the end surface of a front end cover of a bearing seat is 0.7-1.0mm.