CN105127907B - A kind of vertical shot-blasting processing unit and Shot Blasting method - Google Patents

Abstract

The invention relates to a vertical shot blasting treatment device and a shot blasting treatment method. The main body of the shot blasting head can rotate around the sand supply pipe, the sand supply pipe is arranged along the vertical direction, and the top of the sand supply pipe is provided with sand dividing holes. When it reaches the top of the sand supply pipe, it enters the blade of the shot blasting head body through the sand dividing hole, and is accelerated by the rotating blade of the blasting head and thrown horizontally. The processing efficiency is high and the structure is simple. The processing method of the present invention The method and the process are simple and the treatment effect is good.

Description

A vertical shot blasting treatment device and shot blasting treatment method

technical field

The invention relates to a shot blasting treatment device and a shot blasting treatment method, which is suitable for a shot blasting treatment machine, especially for a vertical shot blasting treatment machine for simultaneously performing shot blasting treatment on the inner and outer walls of a steel pipe. Specifically, it relates to a vertical shot blasting treatment machine. A type shot blasting treatment device and a shot blasting treatment method belong to the technical field of steel pipe treatment.

Background technique

Steel pipes are widely used in the field of water supply. In order to prolong the service life of steel pipes, anti-corrosion treatment is very important. At present, a more advanced anti-corrosion measure is to carry out plastic coating on the inner and outer walls of steel pipes. Before plastic coating, the inner and outer walls of steel pipes need to be treated. rust removal. Due to the serious environmental pollution caused by pickling, phosphating and other derusting methods, and the steel pipe wall after pickling is relatively smooth, which reduces the adhesion of the plastic-coated layer on the steel pipe wall, so before plastic-coating the inner and outer walls of the steel pipe, it is necessary The preferred rust removal method for the inner and outer walls of steel pipes is shot blasting. On the one hand, it is because the process of shot blasting will not pollute the environment, but because the process of shot blasting and rust removal on the inner and outer walls of steel pipes Among them, the roughness of the steel pipe wall surface can be increased, thereby enhancing the adhesion of the plastic coating layer to the steel pipe wall.

At present, the shot blasting head assembly, the key device of the shot blasting equipment used for steel pipe wall derusting treatment on the market, due to the scattered combination of the sand supply device, the driving device, etc., and the main body of the shot blasting head, the structure is complex and fragile and the derusting efficiency is low.

At present, the shot blasting head of the shot blasting machine used for derusting the inner wall of the steel pipe is usually designed as a horizontal rotation of the shot blasting head and a side shot blasting working mode due to the reason of relying on gravity for sand supply, such as a shot blasting device disclosed in the patent CN200820222304. The structure is shown in Figure 1 and Figure 2, mainly including fixed frame 1, adjusting frame 2, sand conveying belt roller 3, shot blasting head 4, pulley 5 and inner sanding arm 6 and other components, as can be seen from Figure 1 The shot blasting device with this structure has a complex structure, and in order to reduce the volume of the shot blasting device on the inner wall, it has to be driven by a hydraulic motor, resulting in low energy efficiency and high failure rate during use. The steel pipe to be derusted rotates continuously, resulting in low shot blasting efficiency and poor derusting effect. With this kind of shot blasting device, the shot blasting head rotates on the inner wall of the steel pipe along the horizontal plane of the steel pipe axis during work, and the rust-removing sand shot is sent from above the shot blasting head to the horizontally placed shot blasting head through the belt sand supply device. Inside, the sand shot is sent to the blade part of the shot blasting head through the shot separator and the shot hole, and the blade is thrown from the side of the shot blasting head at high speed to hit the inner wall of the steel pipe to achieve the purpose of rust removal.

Contents of the invention

The technical problem to be solved by the present invention is to provide a vertical shot blasting treatment device for the above deficiencies, which has the advantage of being closely combined after the integrated design of the vertical sand supply pipe, the main body of the shot blasting head and the driving device of the shot blasting head, effectively improving Shot blasting efficiency of shot blasting equipment for inner and outer walls of steel pipes.

The invention also provides a shot blasting treatment method, which has the advantages of simple process and good treatment effect. After treatment by the treatment method of the invention, the inner and outer walls of the steel pipe have no visible grease or dirt, scale, rust and paint coating and other attachments, showing a uniform metallic luster and roughness that meets the requirements of plastic coating, while making the surface of the pipe wall more dense.

In order to solve the above technical problems, the technical solution of the present invention is: a vertical shot blasting treatment device, including a shot blasting head main body, a sand supply pipe and a driving device, and the sand supply pipe is arranged vertically up and down;

The main body of the shot blasting head can be driven by the driving device to rotate in the horizontal direction with the sand supply pipe as the axis;

The sand supply pipe transports the sand shot from the bottom of the main body of the shot blasting head to the main body of the shot blasting head and throws it horizontally.

An optimization scheme, the main body of the shot blasting head is composed of the lower chassis of the shot blasting head, the upper chassis of the shot blasting head, and the blades of the shot blasting head sandwiched between the upper and lower chassis.

In another optimization scheme, the top of the sand supply pipe is rotatably connected to the main body of the shot blasting head;

The sand supply pipe is located on the pipe wall between the lower chassis of the shot blasting head and the upper chassis of the shot blasting head, and a sand distribution hole is provided on the pipe wall, and the sand distribution hole is used to distribute the sand pellets from the sand supply pipe to the main body of the shot blasting head The part of the shot blasting blade.

Another optimization scheme, the drive device is a drive motor;

The drive motor includes a motor stator, a motor housing and a motor rotor;

The motor stator is fixedly connected to the sand supply pipe through the motor housing and fastening components, and the shaft of the motor rotor is fixedly connected to the lower chassis of the shot blasting head through the fastening components, so that the motor rotor drives the main body of the shot blasting head around the sand supply pipe horizontally direction rotation.

In a further optimization scheme, the shaft of the motor rotor is a tubular shaft, and the tubular shaft passes through the shaft center of the motor rotor;

The tubular shaft is a hollow tube, which is connected with the main body of the shot blasting head through fasteners, so as to drive the main body of the shot blasting head to rotate around the sand supply pipe in the horizontal direction.

In a further optimization scheme, the sand supply pipe passes through the tubular shaft of the shot blasting head drive motor and the lower chassis of the shot blasting head in order to transport the sand shot between the lower chassis of the shot blasting head and the upper chassis of the shot blasting head.

In a further optimization scheme, the tubular shaft and the sand supply pipe are integrally structured;

The tubular shaft is rotationally connected to the rotor of the motor through a bearing;

The motor rotor is fixedly connected to the main body of the shot blasting head through fasteners, so as to drive the main body of the shot blasting head to rotate around the sand supply pipe in a horizontal direction.

In a further optimization scheme, the driving device is a driving motor;

The drive motor is fixedly connected to the sand supply pipe through a motor support and a fastening assembly;

The drive motor is connected to the motor pulley, and the motor pulley is connected to the shot blasting head pulley;

The sand supply pipe passes through the pulley of the shot blasting head and the lower chassis of the shot blasting head in turn;

The pulley of the shot blasting head is fixedly connected with the main body of the shot blasting head, and is used to realize that the drive motor drives the main body of the shot blasting head to rotate around the sand supply pipe in the horizontal direction.

The present invention also provides a shot blasting treatment method, characterized in that: said method comprises the following steps:

Shot feeding step: the sand supply pipe arranged in the vertical direction conveys the sand shot from bottom to top;

Shot blasting step: The sand shot is sent from the top of the sand supply pipe to the blade of the shot blasting head in the main body of the shot blasting head that is rotatably connected to the top of the sand supply pipe, and is thrown horizontally after being accelerated by the rotating shot blasting head blade.

An optimization scheme, in the shot blasting step: the sand shot is distributed from the sand distribution hole provided on the top of the sand supply pipe to the blade of the shot blast head in the main body of the shot blast head that is rotatably connected to the top of the sand supply pipe.

The present invention adopts the above technical scheme, and compared with the prior art, it has the following advantages: the main body of the shot blasting head can rotate around the sand supply pipe, the sand supply pipe is arranged along the vertical direction, the top of the sand supply pipe is provided with a sand dividing hole, and the sand When the shot reaches the top of the sand supply pipe, it enters the shot blasting head blade part of the main body of the shot blasting head through the sand dividing hole, and is accelerated by the rotating shot blasting head blade and then thrown horizontally. The processing efficiency is high and the structure is simple.

Taking the shot blasting treatment of a spiral steel pipe with a length of 12 meters and a diameter of 900 mm as an example, the shot blasting treatment machine for the inner wall of the steel pipe disclosed by the shot blasting device of the patent CN200820222304, when processing the inner wall of the steel pipe, the inner wall treatment machine with a total power of 160kW needs 20 minutes . The total power of the shot blasting machine adopting the shot blasting device of the present invention is 120kW, and it only takes about 8 minutes for the same type of steel pipe to be shot blasted, the time is only 40% of the original time, and the energy consumption is only 30% of the original.

The treatment method of the present invention includes a shot feeding step and a shot blasting step. When the sand shot reaches the top of the sand supply pipe along the vertical direction of the bottom of the sand supply pipe, it enters the blade of the shot blasting head main body and passes through the rotating shot blasting pipe. After the head blade is accelerated, it is thrown out in the horizontal direction. The treatment efficiency is high, the process is simple and the treatment effect is good. After the treatment process of the present invention is used, the inner and outer walls of the steel pipe have no visible grease or dirt, scale, rust and paint coating, etc. Attachment, showing a uniform metallic luster and roughness that meets the requirements of plastic coating, while making the surface of the pipe wall more dense.

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Accompanying drawing 1 is the structural representation of shot blasting device in the prior art;

Accompanying drawing 2 is the structural representation of shot blasting device in the embodiment 1 of the present invention;

Accompanying drawing 3 is the structural representation of motor in the embodiment 1 of the present invention;

Accompanying drawing 4 is the structure diagram of the shot blasting device in the embodiment 2 of the present invention.

In the figure,

1-fixed frame, 2-adjusting frame, 3-sand belt roller, 4-blasting head, 5-belt pulley, 6-inner sanding arm, 7-blasting device, 71-blasting head main body, 711 -Blade of shot blasting head, 712-lower chassis of shot blasting head, 713-upper chassis of shot blasting head, 714-upper chassis bearing, 72-sand supply pipe, 721-sand dividing hole, 73-drive motor, 731-tubular shaft, 732-motor housing, 733-motor rotor, 734-motor stator, 735-bearing, 736-motor support, 737-motor pulley, 738-belt, 739-shot blasting head pulley.

detailed description

Embodiment 1, as shown in FIG. 2 and FIG. 3 , is a vertical shot blasting treatment device, including a shot blasting head main body 71 , a sand supply pipe 72 and a driving motor 73 .

The shot blasting head main body 71 is composed of the shot blasting head lower chassis 712, the shot blasting head upper chassis 713, and the shot blasting head blade 711 sandwiched between the upper and lower chassis. The shot blasting head upper chassis 713 and the shot blasting head lower chassis 712 The shot blasting cavity is surrounded by a composite shot blasting cavity, and the two adjacent shot blasting head blades 711 and the upper and lower chassis of the shot blasting head divide the shot blasting cavity into a horn-shaped cavity, and the small end of the horn-shaped cavity is close to the center of the shot blasting head body 71 side.

The driving motor 73 includes a tubular shaft 731 passing through the shaft center of the motor rotor 733, and the tubular shaft 731 is a hollow tubular shaft.

The sand supply pipe 72 passes through the tubular shaft 731 of the driving motor 73 and the shot blasting head lower chassis 712 of the shot blasting head main body 71 in turn, and the sand supply pipe 72 and the shot blasting head upper chassis 713 are connected through the upper chassis bearing 714, for the convenience of illustration The top structure of the sand supply pipe, the upper chassis of the shot blasting head is drawn as transparent in the figure.

The sand supply pipe 72 is respectively connected with the tubular shaft 731 of the drive motor 73, the lower chassis 712 of the shot blasting head and the upper chassis 713 of the shot blasting head through bearings, and a bearing 735 is arranged between the sand supply pipe 72 and the tubular shaft 731, and the tubular shaft 731 and The shot blasting head main body 71 can rotate around the sand supply pipe 72, the motor stator 734 is fixedly connected with the sand supply pipe 72 through the motor housing 732 and the fastening assembly, and the motor rotor 733 is connected to the upper and lower chassis of the shot blasting head main body 71 through the fastening assembly They are respectively fixedly connected so that the motor rotor 733 drives the shot blasting head main body 71 to rotate around the sand supply pipe 72 .

The top of the sand supply pipe 72 has a sand distribution hole 721. The sand distribution hole 241 is located in the shot blasting chamber of the shot blasting head main body 23. The sand distribution hole 241 communicates with the shot blasting chamber of the shot blasting head main body 23. When the bottom of the pipe 24 reaches the top of the sand supply pipe 72, it enters the shot blasting head blade 711 of the shot blasting head main body 71 through the sand dividing hole 721, and is thrown out after being accelerated by the rotating shot blasting head blade 711.

The sand supply pipe 72 can also adopt the method of top shot separation, that is, there is a gap between the top of the sand supply pipe 72 and the upper chassis 713 of the shot blasting head, and the gap is used to distribute the sand shot to the shot blasting head body 71. The part of the ball head blade 711 is thrown out after being accelerated by the rotating shot blast head blade 711.

It should be noted that, as another possible implementation, the tubular shaft of the driving motor itself is a part of the sand supply pipe. At this time, the motor rotor is rotationally connected with the tubular shaft through the inner bearing on the one hand, and connected with the outer bearing through the outer bearing on the other hand. The motor housing is rotatably connected, and protrudes from the outside of the motor housing to be fixedly connected to the upper and lower chassis of the shot blasting head body. The motor structure of this implementation can refer to Figure 3, which is not provided separately here.

Embodiment 2, as shown in FIG. 4 , is a vertical shot blasting treatment device, including a shot blasting head main body 71 , a sand supply pipe 72 and a driving motor 73 .

The shot blasting head main body 71 is composed of a shot blasting head lower chassis 712, a shot blasting head upper chassis 713, and a shot blasting head blade 711 sandwiched between the upper and lower chassis.

The lower chassis 712 of the shot blasting head is fixedly connected with the coaxial center of the shot blasting head pulley 739 through a fastening assembly.

The sand supply pipe 72 successively passes through the shot blasting head pulley 739, the shot blasting head lower chassis 712 of the shot blasting head main body 71, and the shot blasting head upper chassis 713 (for the convenience of illustrating the top structure of the sand supply pipe, the upper part of the shot blasting head is shown in the figure). The chassis is drawn as transparent), and the sand supply pipe 72 is connected with the shot blasting head pulley 739, the shot blasting head lower chassis 712 and the shot blasting head upper chassis 713 through bearings respectively, between the sand supply pipe 72 and the shot blasting head upper chassis 713. An upper chassis bearing 714 is provided, and the shot blasting head pulley 739 and the shot blasting head main body 71 can rotate around the sand supply pipe 72 .

The driving motor 73 is fixedly connected with the sand supply pipe 72 through the motor support 736 and the fastening assembly, and the motor pulley 737 is connected with the shot blasting head pulley 739 through the belt 738, so that the motor pulley 737 drives the shot blasting head pulley 739 to drive the shot blasting head main body 71 Rotate around the sand pipe 72.

The top of the sand supply pipe 72 has a sand dividing hole 721. When the sand shot reaches the top of the sand supply pipe 72, it enters the shot blasting head blade 711 of the shot blasting head main body 71 through the sand dividing hole 721, and passes through the rotating shot blasting head blade 711. Accelerated and thrown.

Embodiment 3, a kind of shot blasting treatment method, adopts the shot blasting device described in embodiment 1 or embodiment 2, and described treatment method comprises the following steps:

1) Shot feeding step: the sand shot is transported from the bottom of the sand supply pipe 72 to the shot blasting head main body 71 at the top of the sand supply pipe 72 .

2) Shot blasting step: When the sand shot reaches the top of the sand supply pipe 72 along the bottom vertical direction of the sand supply pipe 72, it enters the shot blasting head blade 711 of the shot blasting head main body 71 through the sand distribution hole 721, and passes through the rotating shot blasting head. The ball head blade 711 is accelerated and thrown out in the horizontal direction.

The above descriptions are examples of the best implementation modes of the present invention, and the parts not mentioned in detail are common knowledge of those skilled in the art. The protection scope of the present invention is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the present invention is also within the protection scope of the present invention.

Claims (3)

1. a kind of vertical shot-blasting processing unit, including ball blast head main body（71）, sand supplying pipe（72）And drive device, its feature exist In：

The sand supplying pipe（72）Set for upper and lower vertical direction；

The ball blast head main body（71）Can be under the driving of the drive device for sandpipe（72）Revolved in the horizontal direction for axle Turn；

The sand supplying pipe（72）By sand ball from ball blast head main body（71）Bottom is delivered to ball blast head main body（71）Interior level is dished out；

The ball blast head main body（71）By ball blast head low bottom-disc（712）, ball blast head top bottom-disc（713）And it is clipped in two bottoms up and down Ball blast head lobe piece between disk（711）Composition；

Ball blast head top bottom-disc（713）With ball blast head low bottom-disc（712）Between enclose ball blast cavity, two neighboring ball blast head lobe piece （711）Ball blast cavity is divided into horn-like cavity with low bottom-disc on ball blast head, the small head end of horn-like cavity is close to ball blast head Main body（71）The side at center；

The sand supplying pipe（72）Top and ball blast head main body（71）Rotation connection；

The sand supplying pipe（72）Positioned at the ball blast head low bottom-disc（712）, ball blast head top bottom-disc（713）Between tube wall on set There is sub-sand hole（721）, sub-sand hole（721）For by sand ball by sand supplying pipe（72）Send to ball blast head main body（71）Throwing paddle （711）Position；

The drive device is motor（73）；

The motor（73）Including motor stator（734）, electric machine casing（732）And rotor（733）；

Motor stator（734）Pass through electric machine casing（732）With fastening assembly and sand supplying pipe（72）It is fixedly connected, rotor （733）Axle pass through fastening assembly and ball blast head low bottom-disc（712）It is fixedly connected, for realizing rotor（733）Drive and throw Ball head main body（71）Around sand supplying pipe（72）Horizontal direction rotates；

The rotor（733）Axle be tubulose axle（731）, tubulose axle（731）Through rotor（733）Axle center；

Tubulose axle（731）For a hollow body, pass through fastener and ball blast head main body（71）Connection, to drive ball blast head master Body（71）Around sand supplying pipe（72）Horizontal direction rotates；

The sand supplying pipe（72）Sequentially pass through ball blast head motor（73）Tubulose axle（731）With ball blast head low bottom-disc（712）, So as to which sand ball is delivered into ball blast head low bottom-disc（712）With ball blast head top bottom-disc（713）Between；

The tubulose axle（731）With sand supplying pipe（72）It is structure as a whole；

The tubulose axle（731）With rotor（733）It is rotatablely connected by bearing；

The rotor（733）Pass through fastener and the ball blast head main body（71）It is fixedly connected, to drive ball blast head master Body（71）Rotated in the horizontal direction around sand supplying pipe.

A kind of 2. Shot Blasting method of vertical shot-blasting processing unit as claimed in claim 1, it is characterised in that：Methods described Comprise the following steps：

Send ball step：The sand supplying pipe vertically set（72）Sand ball is conveyed from lower to upper；

Ball blast step：Sand ball is by sand supplying pipe（72）Top is delivered to and sand supplying pipe（72）The ball blast head main body of top rotation connection （71）Interior ball blast head lobe piece（711）Position, pass through the ball blast head lobe piece of rotation（711）Horizontal direction is dished out after acceleration.

A kind of 3. Shot Blasting method as claimed in claim 2, it is characterised in that：In the ball blast step：Sand ball is by sand supplying Pipe（72）The sub-sand hole that top is set（721）Dispensing to sand supplying pipe（72）The ball blast head main body of top rotation connection（71）Interior Ball blast head lobe piece（711）Position.