WO2017080302A1 - Horizontal shot blasting machine system and treatment method - Google Patents

Abstract

A horizontal shot blasting machine system and a treatment method. The shot blasting machine system comprises a shot blasting chamber and a shot blasting device. The axis of the shot blasting chamber is arranged in a horizontal direction. The shot blasting device comprises an inner shot blasting device and an outer shot blasting device. The inner shot blasting device is communicated with a high-pressure pneumatic sand conveying device. Sand shots are conveyed to the inner shot blasting device through the high-pressure pneumatic sand conveying device after being accelerated for the first time by means of high-pressure airflow, and then the sand shots are thrown out through the inner shot blasting device after being accelerated again. After a steel pipe to be treated enters the shot blasting chamber, an inner wall of the steel pipe undergoes shot blasting treatment through the inner shot blasting device. The outer shot blasting device is located on the wall of the shot blasting chamber, a shot blasting opening faces an outer wall of the steel pipe, and the outer wall of the steel pipe undergoes shot blasting treatment. Shot blasting treatment on the inner and outer walls of the steel pipe is achieved in an advancing process of the steel pipe. The shot blasting machine system is high in sand supplying capacity and stable in flow, has good automatic sand shot removing and recovering effects, and has a simple structure.

Description

 Horizontal shot blasting machine system and processing method  Horizontal shot blasting machine system and processing method

 Technical field

The invention relates to a horizontal shot blasting machine system and a processing method using high-pressure pneumatic air feeding, which is suitable for shot blasting on a metal surface or a pipe wall surface of a steel pipe, and is particularly suitable for simultaneously blasting a steel pipe inner and outer wall. Processing, especially for tube diameters greater than The treatment effect of the 600mm steel pipe is better. Specifically, the invention relates to a horizontal shot blasting machine system and a sand feeding method which can treat the surface of the steel pipe wall, and belongs to the technical field of steel pipe wall treatment.

 Background technique

Steel pipes are widely used in the field of water supply. In order to extend 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 treatment on the inner and outer walls of the steel pipe. Before the plastic coating, the inner and outer walls of the steel pipe need to be derusted, and the rust removal method such as pickling and phosphating is serious to the environment and acid. The wall of the steel pipe after washing is relatively smooth, which reduces the adhesion of the plastic coating layer on the steel pipe wall. Therefore, the current descaling method for the inner and outer walls of the steel pipe is required to be blasted before the inner and outer walls of the steel pipe are coated. Rust removal, on the one hand, because the shot blasting process does not pollute the environment, and the second is because in the process of shot blasting on the inner and outer walls of the steel pipe, the surface roughness of the steel pipe wall can be increased, thereby enhancing the plastic coating layer. The adhesion of the steel pipe wall.

According to the current shot blasting process, it is necessary to rust the inner and outer walls of the steel pipe. It is usually necessary to separately use the shot blasting machine for the internal and external wall of the steel pipe to perform the shot blasting operation on the inner and outer walls of the steel pipe. The inner wall descaling process is generally required For 40 minutes, the outer wall descaling process takes 40 minutes, and the descaling time is long and the efficiency is low.

In addition, although the technology for shot blasting on the outer wall of steel pipes is relatively mature on the market, the technology for shot blasting on the inner wall of steel pipes is not perfect.

The existing steel pipe inner wall shot blasting equipment, in order to reduce the size of the shot blasting device to be suitable for processing the inner wall of the small diameter steel pipe, usually adopts a motor driven hydraulic station, and the hydraulic station drives the hydraulic motor to drive the power blasting mode of the shot blasting head, and In the shot blasting process, the steel pipe is placed horizontally. In order to take out the thrown sand pill from the inside of the steel pipe with a strong airflow, a high-power exhaust dust removal device is required, so the existing inner wall shot blasting equipment of the steel pipe is mostly bulky and needs to be occupied. Large plant space, high energy consumption and low rust removal efficiency. Especially for large-diameter steel pipes, the existing horizontal steel pipe inner wall shot blasting machine in the process of shot blasting on the inner wall, when the pipe diameter is large, the sand pill in the pipe is not easy to be automatically cleaned in time during the shot blasting process, affecting the throwing Pill handling efficiency and recycling of sand pills.

At present, the shot blasting machine used for shot blasting on the inner wall of steel pipe needs to place the steel pipe horizontally during the shot blasting process. In this case, in order to take the thrown sand ball out from the inside of the steel pipe with a strong air flow, high power is required. Exhaust dust removal equipment, and most of the sand supply system first raises the sand pill to a certain height, and then the sand pill slides along the sand guide pipe to the sand supply belt by its own gravity. Then, the belt is conveyed to the inside of the shot blasting head. Therefore, the existing inner wall blasting equipment of the steel pipe is bulky and complicated in structure, and needs to occupy a large workshop space, and the failure rate is high and the rust removal efficiency is low. Especially for large-diameter steel pipes, the existing horizontal steel pipe inner wall shot blasting machine in the process of shot blasting on the inner wall, the sand pill in the pipe is not easy to be automatically cleaned by the exhausting equipment in the shot blasting process, which affects the efficiency of shot blasting. And the recycling of sand pills.

 Patent CN200820222304 discloses a structure of a shot blasting device for treating inner wall of a steel pipe as shown in FIG. 1 and FIG. 2 As shown, it mainly includes the fixed frame 1, the adjustment frame 2, the sanding belt stick 3, the shot blasting head 4, the pulley 5, the inner sanding arm 6 and so on, from Figure 1 It can be seen that the structure of the shot blasting device is complicated, and the failure rate is high during use. In addition, the steel pipe which needs to be rusted is continuously rotated during the shot blasting process, thereby resulting in low shot blasting efficiency and rust removing effect. Poor question. The shot blasting structure is shown in the figure 2 As shown, the shot blasting head rotates on the inner wall of the steel pipe along the horizontal plane of the steel pipe axis, and the rust removing sand pill is fed from the top of the shot blasting head into the horizontally placed shot blasting head through the belt sanding device, and the sand pill is under the action of its own gravity. The pelletizing machine and the splitting hole are dispersed to the shot blasting blade, and the inner wall of the steel pipe is thrown from the side of the blasting head by the blade at high speed, thereby achieving the purpose of removing the rust on the inner wall of the steel pipe.

 Summary of the invention

The technical problem to be solved by the present invention is to provide a horizontal shot blasting machine system, the blasting machine of the present invention, for the problems of low rust removal efficiency, inconvenient cleaning and recovery of sand pill for the blasting and rust removal of the inner wall of the steel pipe. The machine system adopts a high-pressure pneumatic sand-feeding device to accelerate the sand pill for the first time and then send it to the inside of the shot blasting head through the sand supply pipe. The sand pill is dispersed to the blade part of the shot blasting head at a certain initial speed, and is thrown by the high-speed rotating blade. The second acceleration of the blade head makes the shot blasting treatment of the inner and outer walls of the steel pipe, the sand supply is large and the flow rate is stable, the sand pill is automatically cleaned and recovered, the shot blasting efficiency is high, the rust removal effect is good, and the energy consumption is good. Low, the plant covers a small area, and the entire shot blasting machine system has a simple structure and stable operation.

The invention also provides a treatment method, which adopts the treatment method of the invention, has the advantages of large sand supply volume and stable flow rate, can realize automatic cleaning and recovery of sand pill, convenient operation and stable operation.

In order to solve the above technical problem, the technical solution of the present invention is: a horizontal shot blasting machine system, including a blasting chamber and a shot blasting device, wherein the axis of the blasting chamber is placed in a horizontal direction, and the blasting device includes an internal shot blasting device Device and external shot blasting device;

The inner shot blasting device is connected with a high-pressure pneumatic sand-feeding device, and the high-pressure pneumatic sand-feeding device accelerates the sand shots to the inner shot blasting device through the high-pressure airflow, so that the inner shot blasting device accelerates the sand shots and then throws them out.

 An optimization scheme, wherein the inner shot blasting device is disposed in a cavity of the blasting chamber for realizing shot blasting treatment on the inner wall of the steel pipe;

The inner shot blasting device is connected with an inner shot blasting device for supplying a sand tube, and the inner shot blasting device is connected with a high pressure pneumatic sand feeding device for conveying the sand shot for the inner shot blasting device.

In another optimization scheme, the inner shot blasting device comprises a shot blasting device supporting tube, and the blasting device supporting tube is located at a upper end of a section of the tube wall in the main body of the shot blasting head, and is provided with a sealing chamber upper sealing plate and a shot blasting device supporting tube. a lower part of the pipe wall located in the main body of the shot blasting head and a bottom part sealing plate between the inner blasting device and the sand pipe;

 The upper and lower sealing plates of the splitting chamber and the supporting pipe of the shot blasting device are located in a section of the pipe wall in the main body of the shot blasting head;

 The support pipe of the shot blasting device is provided with a sand dividing hole at a periphery of a section of the pipe wall of the splitting chamber;

The inner shot blasting device feeds the sand pipe through the lower sealing plate of the splitting chamber to feed the sand pill into the splitting pill chamber, and the sand pill passes through the sand dividing hole to reach the inner blade part of the main body of the shot blasting head, and the sand pill is thrown by the blade when the main body of the blasting head rotates Out.

In another optimization scheme, the inner shot blasting device is installed on the arm of the inner shot blasting device, and the inner shot blasting device arm is disposed inside the shot blasting chamber along the axial direction of the blasting chamber;

 The inner shot blasting device is provided for the sand pipe along the arm of the inner shot blasting device.

In a further optimization scheme, the shot blasting machine system further comprises a sand pill cleaning device, and the sand pill cleaning device is disposed under the arm of the blasting device for cleaning the sand pill inside the steel pipe during the blasting process;

 The sand pill cleaning device comprises a sand pill cleaning worm, a worm driving motor, and a worm bracket;

The length of the worm support is adjustable, and the sand blasting worm is used to tangentially cut the inner wall surface of the bottom portion of the steel pipe under the treated steel pipe, so that the sand pill falling to the bottom bottom of the steel pipe during the shot blasting process of the inner wall of the steel pipe is cleaned out of the steel pipe.

 In a further optimization scheme, the shot blasting machine system further comprises a sand pill recycling device, and the sand pill recycling device is disposed at the bottom of the blasting chamber;

The sand pill recycling device comprises a sand pill conveyor belt and a sand pill conveyor driving device connected by the driving, and the sand pill is sent to the high-pressure pneumatic sand feeding device through the sand returning pipe set at the bottom of the blasting chamber through the sand pill recycling device for recycling.

In a further optimization scheme, the high-pressure pneumatic sand feeding device comprises a gas sand mixer, and a pressure sand storage tank is connected above the gas sand mixer, and the pressure sand storage tank is connected with the return sand pipe disposed at the bottom of the shot blasting chamber;

The gas sand mixer is connected with a high pressure gas pipe, and the sand pill is first accelerated by the high pressure air flow and then sent to the inner shot blasting device, so that the inner shot blasting device accelerates the sand pill again and throws it.

In a further optimization scheme, a blasting chamber mouth sealing device is arranged at the entrance of the steel pipe of the blasting chamber, and the blasting chamber mouth sealing device is an annular sealing device for blocking the sand blasting out of the blasting chamber in the blasting chamber;

 The annular width of the blast chamber opening sealing device is adjustable to adapt to the diameter of the steel pipe to be treated.

According to still another optimization scheme, the shot blasting machine system further includes an exhaust dust removing device, and the air extracting dust removing device is connected to the blasting chamber for extracting and filtering the gas mixed with the rust dust in the shot blasting chamber.

 The invention also provides a processing method of a horizontal shot blasting machine system, comprising the following steps:

After the steel pipe to be shot blasted enters the shot blasting chamber through the steel pipe conveying device, the inner shot blasting device is located inside the steel pipe, and the inner wall of the steel pipe is shot blasted, and the outer shot blasting device is located at the wall of the blasting chamber, and the shot blasting port faces the outer wall of the steel pipe, The outer wall of the steel pipe is subjected to shot blasting treatment, and the shot blasting treatment of the inner and outer walls of the steel pipe is realized in the process of the steel pipe traveling;

The worm support adjusts the length according to the diameter of the steel pipe, so that the worm is just tangent to the inner surface of the bottom bottom of the inner wall of the steel pipe, so that the worm can timely clean the sand pill falling to the bottom of the inner part of the steel pipe during the shot blasting process;

The sand pill recycling device transports the sand pill in the shot blasting chamber to the high-pressure pneumatic sand feeding device through the returning sand pipe disposed at the bottom of the blasting chamber; the high-pressure pneumatic sand feeding device uses the high-pressure airflow to transport the sand pill to the blasting device for recycling, wherein The steps of conveying the sand pills specifically include:

 Closing the high-pressure gas flow valve at the inlet end of the high-pressure gas pipe, the pressure in the pressure storage tank is reduced, the valve at the sand inlet is opened, and the sand pill is added to the pressure storage tank;

Open the high-pressure airflow valve, the high-pressure airflow enters the pressure storage tank from one branch of the high-pressure gas pipe, the sand inlet valve is closed under the push of the high-pressure airflow, the pressure in the pressure storage tank is increased, and the high-pressure airflow will be the sand pill in the pressure storage tank. Pressed into the gas sand mixer, while the high pressure gas flows from the other branch of the high pressure gas pipe into the gas sand mixer, and the sand pill entering the gas sand mixer is accelerated into the sand blasting pipe by the high pressure air flow, and communicates with the sand blasting pipe. The inner shot blasting device allows the sand pipe to enter the inner shot blasting device at a certain speed, and is thrown out again after being accelerated by the inner shot blasting device.

The invention adopts the above technical solutions, and has the advantages of simple system structure, stable and reliable operation, high efficiency of the whole machine and low energy consumption compared with the prior art.

Taking a 12-meter-long spiral pipe with a diameter of 900 mm as an example, the existing steel pipe shot blasting equipment is divided into an external wall shot blasting machine and an inner wall shot blasting machine, which needs to be processed step by step in the steel pipe. When the outer wall is treated, the outer wall processor with a total power of 100kW needs 30 minutes of processing time. When the inner wall of the steel pipe is treated, the inner wall processor with a total power of 160kW takes 20 minutes, which means that the processing time of the whole steel pipe in the shot blasting stage needs 50. minute. The shot blasting machine system of the invention can simultaneously blast the inner and outer walls of the steel pipe, and the total power is 130 kW when the inner and outer walls are simultaneously shot blasting, and the inner and outer walls of the same steel pipe for shot blasting only need 15 minutes, the time taken. Less than 30% of the original, and the energy consumption is only 31%.

 The invention will now be described in detail in conjunction with the drawings and embodiments.

 DRAWINGS

 Figure 1 is a schematic view showing the structure of a shot blasting apparatus in the prior art;

 2 is a schematic structural view of a shot blasting head in the prior art;

 Figure 3 is a schematic structural view of a shot blasting machine system according to Embodiment 1 of the present invention;

 Figure 4 is a schematic structural view of an internal shot blasting apparatus in Embodiment 2 of the present invention;

 Figure 5 is a schematic structural view of a first planetary gear set in Embodiment 2 of the present invention;

 Figure 6 is a schematic structural view of a second planetary gear set in Embodiment 2 of the present invention;

 Figure 7 is a partial structural view showing the inner sleeve of the second embodiment of the present invention.

 In the picture,

 1- fixed frame, 2- adjustment frame, 3- sand belt roller, 4-blasting head, 5-belt pulley, 6- inner sanding arm, 7- blasting chamber mouth sealing device, 8- external shot blasting device, 9- internal shot blasting device, 98- divided ball room lower sealing plate, 99- dividing sand hole, 910- blasting head lower chassis, 911- Shot blasting head chassis, 912- blasting head blade, 913- second planetary gear, 914- second planetary gear shaft, 915- first planetary gear, 916- first planetary gear shaft, 917- Sun gear, 918- drive motor mounting plate, 919- first inner sleeve bearing, 920- drive motor, 921- motor shaft, 922- first planetary gear carrier, 923- First planetary gear hole, 924- internal sleeve, 925- second inner sleeve bearing, 926- second planetary gear support, 927- blasting head bearing, 928- blasting head outer sleeve, 929- Separating pill chamber sealing plate, 930-part ball chamber, 931- motor cable, 932- shot blasting device support tube, 933- motor shaft hole, 10- worm bracket, 11- blasting chamber, 12- Shot blasting chamber wall, 13- sand pill cleaning worm, 14- internal shot blasting device arm, 15-injection blasting device for sand pipe, 16- worm drive motor, 17- internal blasting device support, 18- Exhaust dust removal device, 19- sand pill conveyor drive, 20- return sand pipe, 21- sand inlet valve, 22- pressure sand storage tank, 23- pressure sand storage tank sand outlet, 24-gas sand mixer, 25- blasting pipe, 26- high pressure gas flow valve, 27- high pressure gas pipe, 28- pressure sand storage tank sand inlet, 29- steel pipe conveying wheel, 30- sand pill conveyor belt.

 detailed description

 Embodiment 1 As shown in FIG. 3, a horizontal shot blasting machine system includes a high pressure pneumatic sand feeding device, an internal shot blasting device 9, and an external shot blasting device 8 , shot blasting chamber 11, sand pill cleaning device, sand pill recovery device, exhaust dust removal device 18 .

The inner shot blasting device 9 is disposed on the inner shot blasting device arm 14 and adopts a high pressure pneumatic sand supply technology, wherein the inner shot blasting device sand supply tube 15 is disposed on the inner shot blasting device arm 14 for sand The pellet is sent to the inside of the shot blasting head, and the inner shot blasting device is connected to the high pressure type pneumatic sand supplying device.

The inner blasting device arm 14 is disposed inside the blasting chamber 11 and is fixed by the inner blasting device holder 17, and the inner blasting device arm 14 is disposed below the inner blasting device arm 14 Sand pill cleaning device to clean the sand pill inside the steel pipe from inside the steel pipe during shot blasting.

 The sand pill cleaning device comprises a sand pill cleaning worm 13 , a worm driving device and a worm support 10 Wherein, the worm drive device selects a worm drive motor 16, and the worm support 10 The length can be adjusted according to the diameter of the steel pipe to be treated, so that the worm can be tangential to the inner wall surface of the bottom portion of the steel pipe to be treated, so that the sand pill can be cleaned out of the steel pipe.

The outer shot blasting device 8 is disposed on the blast chamber wall 12, and the shot blasting port of the outer shot blasting device 8 faces the inside of the blast chamber 11 and corresponds to the inner shot blasting device 9 disposed inside the blast chamber 11 The outer shot blasting device 8 can adopt a high-pressure pneumatic sand supply method, and can also adopt the existing method of lifting the sand ball to a high place, and relying on the gravity drop of the sand ball to supply sand, the invention is not limited.

 The steel pipe to be shot blasted enters the blasting chamber 11 through a steel pipe conveying device, which includes a steel pipe conveying wheel 29, and the steel pipe enters the blasting chamber After 11 , the internal shot blasting device 9 is located inside the steel pipe, and the inner wall of the steel pipe is shot blasted, and the outer shot blasting device 8 is located on the wall of the blasting chamber 12 The shot blasting port is directed to the outer wall of the steel pipe, and the outer wall of the steel pipe is subjected to shot blasting, and the shot blasting treatment of the inner and outer walls of the steel pipe is realized in the process of the steel pipe traveling. Worm support 10 The length can be adjusted according to the diameter of the steel pipe, so that the worm is just tangent to the lower surface of the inner wall of the steel pipe, so that the worm can timely clean the sand in the steel pipe out of the steel pipe during the shot blasting process.

 A sand pill recovery device is provided at the bottom of the blast chamber 11 and the sand pill recovery device includes a sand pill conveyor 30 The sand pill is transported to the returning sand pipe 20 through the sand pill recycling device, and is sent to the pressure sand storage tank 22 of the high-pressure pneumatic sand feeding device through the returning sand pipe 20 for recycling.

 The air inlet pipe of the exhaust dust removing device 18 is connected with the blasting chamber 11 , and during the blasting treatment of the steel pipe, the air blasting device 18 will blast the blasting chamber 11 The gas mixed with rust dust is filtered out to avoid contamination of the surrounding air.

 In order to prevent the sand pill from flying out from the inlet side of the steel pipe during the shot blasting process, the present invention is still in the blasting chamber 11 The blast chamber opening sealing device 7 is provided at the entrance of the steel pipe, and the blasting chamber port sealing device 7 is an annular sealing device for blocking the sand balls in the blasting chamber 11 from flying out of the blasting chamber 11, the shot blasting Chamber seals 7 It can be adjusted manually or automatically according to the size of the steel pipe to be treated, so as to be suitable for steel pipes of different calibers, blasting chamber sealing device 7 The width adjustment can be implemented by using the adjustment method in the prior art, which is not limited by the present invention.

 The high-pressure pneumatic sand feeding device comprises a pressure storage tank 22, a gas sand mixer 24, a sand inlet valve 21, a high pressure gas pipe 27, and a sandblasting pipe. 25 and so on. Pressure sand storage tank 22 has pressure storage tank sand inlet 28 and pressure sand storage tank sand outlet 23, sand inlet valve 21 is set in pressure sand storage tank sand inlet 28 The utility model is used for opening and closing the sand inlet 28 of the pressure storage tank; the high pressure gas pipe 27 has an inlet end and an outlet end, and the intake end of the high pressure gas pipe 27 is connected with a high pressure air flow valve 26 and a high pressure air flow valve 26 For controlling the on and off of the high pressure air flow, the outlet end of the high pressure air pipe 27 is provided with two branches, and the two branches are respectively connected with the pressure storage tank 22 and the gas sand mixer 24, wherein the pressure storage tank 22 The connected branch and the pressure storage tank inlet valve 21 are pneumatically driven, and the gas sand mixer 24 has an air inlet, a sand inlet and a sand outlet, and an air inlet and a high pressure intake pipe of the gas sand mixer 24 The outlet end of the gas sand mixer 24 is connected to the sand outlet of the pressure sand storage tank 23, and the sand outlet of the gas sand mixer 24 is connected to the sandblasting tube 25.

Before adding the sand pill to the pressure storage tank 22, the high pressure gas flow valve 26 is first closed, the pressure in the pressure storage tank 22 is reduced, the inlet valve 21 is opened, the high pressure gas flow valve 26 is opened after the sand pill is added, and the high pressure gas flow is from the high pressure. A branch of the gas pipe 27 enters the pressure storage tank 22, and under the push of the high pressure gas flow, the inlet valve 21 is closed, the pressure in the pressure storage tank 22 is increased, and the high pressure gas flows the sand in the pressure storage tank 22. Into the gas sand mixer 24, while the high pressure gas stream enters the gas sand mixer 24 from the other branch of the high pressure gas inlet pipe 27, and the sand ball entering the gas sand mixer 24 is accelerated into the sand blasting pipe 25 by the high pressure gas flow, and The inner blasting device of the blasting pipe 25 is connected to the inner blasting device 9, and the blasting blade rotating in the inner blasting device 9 is accelerated again and then thrown.

 When the inner wall of the steel pipe is shot blasted by the shot blasting machine system of the present invention, the steel pipe to be shot blasted enters the blasting chamber through the steel pipe conveying device. The internal shot blasting device 9 is inside the steel pipe, and the high-pressure pneumatic sand pill conveying device accelerates the sand pill by using the high-pressure airflow, and the sand pill reaches the inner blasting device for the sanding pipe 15 through the blasting pipe 25 and is transported to the inner blasting device. 9 The inner and inner shot blasting device 9 includes a shot blasting head, and the sand shot is thrown out at a high speed by the rotating blade of the shot blasting head, thereby achieving shot blasting treatment on the inner wall of the steel pipe.

 Embodiment 2, as shown in FIG. 4, FIG. 5, FIG. 6, and FIG. 7, the internal shot blasting device 9 Including the main body of the shot blasting head, the power of the shot blasting head, the gear transmission device, the inner blasting device for the sand pipe 15, the driving motor fixing plate 918, and the blasting device supporting tube 932.

 The blasting head body is composed of a shot blasting lower chassis 910, a blasting head upper chassis 911, and a blasting head blade sandwiched between the upper and lower chassis of the blasting head. 912 composition.

 Internal shot blasting device for sand pipe 15 Passing through the lower head of the shot blasting machine 910, the inner shot blasting device for the sand pipe 15 The open end is located inside the main body of the shot blasting head, that is, the inner shot blasting device has a gap between the plane where the open end of the sand tube 15 is located and the upper 911 of the shot blasting head, and the gap is used for conveying the sand pill to the throwing Marl head blade 912 In the cavity formed between the upper and lower chassis of the shot blasting head.

 The inner shot blasting device is provided with a blasting device support tube 932 for the outer circumference of the sand pipe 15 and a blasting device support tube 932 Through the main body of the shot blasting head, the top of the shot blasting device support tube 932 is fixedly connected with a driving motor fixing plate 918, and the driving motor fixing plate 918 is disposed outside the main body of the blasting head near the bottom of the blasting head 911 On one side, there is a gap between the drive motor mounting plate 918 and the blasting head upper chassis 911 for receiving the gear transmission.

The blasting head power device is used to drive the main body of the blasting head to realize the throwing of the sand blasting. The powering device of the blasting head can adopt a motor or a hydraulic motor. In the embodiment, the power of the shot blasting head adopts a driving motor 920 and a driving motor 920. The motor shaft 921 is drivingly coupled to the blasting head body.

 The drive motor 920 is fixed to the drive motor fixed plate 918 with the motor shaft 921 facing the main body of the shot blasting machine, the motor shaft 921 It is connected to the gear transmission.

 The gear transmission includes a first planetary gear set and a second planetary gear set, the first planetary gear set including a sun gear 917 that meshes with transmission And a first planetary gear 915, the second planetary gear set includes a blasting outer sleeve 928, a second planetary gear 913 and an inner sleeve 924, a first planetary gear 915 and an inner sleeve 924. Engage the drive.

The sun gear 917 is mounted on the motor shaft 921 through the motor shaft hole 933, and the sun gear 917 is located inside the shot blasting device support tube 932. The first planetary gear 915 passes through the wall of the shot blasting device support tube 32 through the first planetary gear hole 23. The first planetary gear 15 is coupled to the first planetary gear shaft 916, and the first planetary gear shaft 916 is coupled to the first planetary gear support 922, and the first planetary gear support 922 is fixedly coupled to the pipe wall of the blasting device support tube 932. .

The drive motor 920 transmits power to the first planetary gear 915 through the sun gear 917, and the first planetary gear 915 meshes with the internal teeth of the inner sleeve 924, and transmits power to the second planetary gear 913 through the inner sleeve 924, the second planet The gear shaft 914 is coupled to the second planetary gear support 926, the second planetary gear support 926 is fixedly coupled to the wall of the shot blasting device support tube 932, and the second planetary gear support 926 is disposed between the second planetary gear support 926 and the inner toothed sleeve 924. A second inner sleeve bearing 925, an inner sleeve 924 and a tube wall of the blasting device support tube 932 are provided with a first inner sleeve bearing 919, and the second planetary gear 913 is meshed with the outer teeth of the blasting outer sleeve 928 The power is transmitted to the outer sleeve 928 of the shot blasting head, and the outer sleeve 928 of the shot blasting head is fixedly connected with the upper 911 of the blasting head and rotated around the blasting device support tube 932 by the blasting head bearing 927, thereby driving the shot blasting head The body rotates.

The shot blasting device support tube 932 is provided at one end of a section of the tube wall of the shot blasting head body with a splitting chamber upper sealing plate 929, and the blasting device supporting tube 932 is located at the other end of the tube wall in the main body of the shot blasting head and is internally thrown There is a sub-barrier lower sealing plate 98 between the pilling device 915, and the upper and lower sealing plates of the pilling chamber and the blasting device supporting tube 932 are located in a pipe wall of the main body of the blasting head to surround the blast chamber 930, and blasting The device support tube 932 is disposed at a periphery of a section of the pipe wall of the splitting chamber 930, and is provided with a sand dividing hole 99. The inner shot blasting device passes through the splitting plate 98 of the splitting chamber to send the sand pill into the splitting chamber 930. The pellet passes through the sanding hole 99 to the position of the blasting blade 912, and the blasting head is thrown by the blasting blade 912 when the blasting head body rotates. When the main body of the shot blasting head throws the sandball all around, the motor cable 931 of the driving motor is installed in the blasting device support tube 932, passes through the blasting head body and the gear transmission device to reach the driving motor 920, and the motor cable 931 is worn. The upper and lower sealing plates of the splitting chamber 930 are required to pass through the main body of the shot blasting chamber 930, and the opening of the dividing hole 99 and the first planetary gear 915 through the wall of the blasting device supporting tube 932 is avoided.

The above is an example of a preferred embodiment of the present invention, and parts that are not described in detail are common knowledge of those skilled in the art. The scope of the present invention is defined by the scope of the claims, and any equivalent transformation based on the teachings of the present invention is also within the scope of the present invention.

Claims (10)

A horizontal shot blasting machine system, comprising a blasting chamber axis (11) and blasting devices, blasting chamber (11) disposed in the horizontal direction, wherein:

The shot blasting device comprises an inner shot blasting device (9) and an outer shot blasting device (8);

The inner shot blasting device (9) is connected with a high-pressure pneumatic sand-feeding device, and the high-pressure pneumatic sand-feeding device accelerates the sand shots to the inner shot blasting device by high-pressure airflow (9) ), so that the internal shot blasting device (9) will accelerate the sand pill and throw it again.

2. A horizontal shot blasting machine system according to claim 1, characterized in that the inner shot blasting device (9) is arranged in the cavity of the blast chamber (11) for realizing the inner wall of the steel pipe. Shot blasting

The internal shot blasting device (9) is connected with an internal blasting device for the sand pipe (15), and the internal blasting device for the sand pipe (15) It is connected with a high-pressure pneumatic sand feeding device for conveying sand pills for the internal shot blasting device (9).

3. A horizontal shot blasting machine system according to claim 1, wherein said inner shot blasting device (9) comprises a shot blasting device support tube (932), and the shot blasting device support tube (932) is located. The upper end of a section of the pipe wall in the main body of the shot blasting head is provided with a sealing plate upper chamber (929), and the blasting device supporting tube (932) is located at the lower end of the pipe wall in the main body of the blasting head and the inner blasting device for sand supply Between the tubes (15), there is a sub-pellet lower sealing plate (98);

The upper and lower sealing plates of the splitting chamber and the support tube (932) of the shot blasting device are located in a section of the wall of the shot blasting head to surround the ball chamber (930) );

The blasting device support tube (932) is located at a periphery of a section of the tube wall of the splitting chamber (930) and is provided with a sand dividing hole (99);

The inner shot blasting device sand supply pipe (15) passes through the splitting chamber lower sealing plate (98) to send the sand pill into the splitting chamber (930), and the sand pill passes through the sand dividing hole (99) ) reaching the blade portion in the main body of the shot blasting head, and throwing the sand shot through the blade when the blasting head body rotates.

4. A horizontal shot blasting machine system according to claim 1, wherein said inner shot blasting device (9) is mounted on an inner shot blasting device arm (14), and the inner shot blasting device arm (14) being disposed inside the blast chamber (11) along the axial direction of the blast chamber (11);

The inner shot blasting device is provided with a sand pipe (15) along the inner shot blasting device arm (14).

The horizontal shot blasting machine system according to claim 4, wherein the shot blasting machine system further comprises a sand pill cleaning device, and the sand pill cleaning device is disposed on the inner blasting device arm (14) Below, used to clean the sand inside the steel pipe from the inside of the steel pipe during the shot blasting process;

The sand pill cleaning device comprises a sand pill cleaning worm (13), a worm driving motor (16), and a worm support (10);

The length of the worm support (10) is adjustable for the sand pill cleaning worm ( 13 ) tangential to the inner wall surface at the bottom of the steel pipe under the treated steel pipe to clean the inside of the steel pipe from the sand pill that falls to the bottom of the inner portion of the steel pipe during the shot blasting process.

The horizontal shot blasting machine system according to claim 1, wherein the shot blasting machine system further comprises a sand pill recovery device, and the sand pill recovery device is disposed at the bottom of the blast chamber (11);

The sand pill recovery device comprises a drive-connected sand pill conveyor belt (30) and a sand pill conveyor drive device (19), and the sand pill is placed in the blasting chamber through the sand pill recovery device ( 11) The bottom return pipe (20) is sent to the high-pressure pneumatic sand-feeding device for recycling.

7. A horizontal shot blasting machine system according to claim 1, wherein said high pressure pneumatic sand feeding device comprises a gas sand mixer (24), and a pressure storage is connected above the gas sand mixer (24). a sand tank (22), a pressure sand storage tank (22) is connected to the return sand tube (20) disposed at the bottom of the blast chamber (11);

The gas sand mixer (24) is connected with a high pressure gas pipe (27), and the sand pill is first accelerated by the high pressure air flow and then sent to the inner shot blasting device (9) for the internal shot blasting device ( 9) Throw the sand pill again after it has been accelerated.

The horizontal shot blasting machine system according to claim 1, characterized in that: the blasting chamber mouth sealing device (7) is arranged at the entrance of the steel pipe of the blasting chamber (11), and the blasting chamber mouth sealing is provided. The device (7) is an annular sealing device for blocking the sand balls in the blasting chamber (11) from flying out of the blasting chamber (11);

The annular width of the blast chamber opening sealing device (7) is adjustable to adapt to the diameter of the steel pipe to be treated.

9. The horizontal shot blasting machine system according to claim 1, wherein the shot blasting machine system further comprises an exhaust dust removing device (18), and the air extracting dust removing device (18) is connected to the blasting chamber for use. The gas in which the rust dust is mixed in the shot blasting chamber (11) is filtered out.

10. A method of processing a horizontal shot blasting machine system, characterized in that the processing method comprises the following steps:

After the steel pipe to be shot blasted enters the blasting chamber (11) through the steel pipe conveying device, the internal shot blasting device (9) Inside the steel pipe, the inner wall of the steel pipe is shot blasted, and the outer shot blasting device (8) is located on the wall of the blasting chamber (12) ), the shot blasting port is directed toward the outer wall of the steel pipe, and the outer wall of the steel pipe is subjected to shot blasting treatment, and the shot blasting treatment of the inner and outer walls of the steel pipe is realized in the process of traveling the steel pipe;

Worm support (10 According to the adjustment of the pipe diameter of the steel pipe, the worm is just tangent to the inner surface of the bottom bottom of the inner wall of the steel pipe, so that the worm can timely clean the sand pill falling to the bottom of the inner part of the steel pipe during the shot blasting process;

The sand pill recycling device passes the sand pill in the shot blasting chamber (11) through the returning sand pipe disposed at the bottom of the blasting chamber (20) The utility model is sent to the high-pressure pneumatic sand feeding device; the high-pressure pneumatic sand feeding device uses the high-pressure airflow to transport the sand pill to the blasting device for recycling, wherein the step of conveying the sand pill comprises:

Close the high pressure gas flow valve ( 26 ) at the inlet end of the high pressure gas pipe ( 27 ), reduce the pressure in the pressure storage tank ( 22 ), and enter the sand inlet valve ( 21 ) opening, adding sand pills to the pressure storage tank (22);

Open the high pressure air flow valve ( 26 ), and the high pressure air flow enters the pressure storage tank from one branch of the high pressure air pipe ( 27 ) ( 22 The sand inlet valve (10) is closed by the high pressure airflow, the pressure in the pressure storage tank (22) is increased, and the high pressure airflow presses the sand pellet in the pressure storage tank (22) into the gas sand mixer (24) ), while the high pressure gas stream enters the gas sand mixer ( 24 ) from the other branch of the high pressure gas pipe ( 27 ), and the sand pill entering the gas sand mixer ( 24 ) is accelerated into the sand blast pipe by the high pressure gas flow ( 25 ) The inner blasting device (9) enters the inner blasting device (9) through an internal blasting device connected to the blasting pipe (25) at a certain speed, and the internal blasting device (9) ) Throw out after accelerating again.