Sand blasting, pressurizing and sand feeding all-in-one machine

Abstract

The utility model discloses a sand blasting, pressurizing and sand feeding all-in-one machine which comprises factory instrument air, pressurizing equipment, an automatic sand blasting machine, sand feeding equipment and a pipe cap filling device, and a factory instrument air pipeline is communicated with a sand blasting gun in the automatic sand blasting machine through the pressurizing equipment; a feed port in the top of the automatic sand blasting machine is communicated with a discharge port of a conveying mechanism in the sand conveying equipment through a sand pipe via a sand inlet valve; the sand blasting device further comprises a pipe cap filling device used for plugging a pipe cap in the sand blasting process. According to the sand blasting, pressurizing and sand feeding all-in-one machine, factory instrument air is introduced into pressurizing equipment, the cost of using a compressor and environmental pollution caused by using the compressor are reduced, and the problems that existing sand blasting equipment is high in using cost and low in construction efficiency are well solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sandblasting equipment, in particular to a sandblasting, pressurizing and sand feeding integrated machine. Background Art

[0002] Sandblasting is an important step in the spraying process. A sandblaster is a surface treatment device primarily used to clean and improve the surface quality of an object. It uses compressed air as its power source, mixing sand and air to form a high-speed jet beam that sprays the material onto the surface of the workpiece to be treated. This can cause attachments on the surface of the workpiece to peel off or change the mechanical properties of the surface. Existing sandblasting equipment has the following problems:

[0003] (1) Existing sandblasting machines use high-power compressors to provide compressed air, but the cost of using compressors is high. In addition, since the compressors use diesel combustion as a power source, the environment is also polluted to a certain extent. However, the pressure of factory instrument air alone is insufficient, resulting in poor sandblasting effect and inability to effectively remove rust and dust in the reactor tubes.

[0004] (2) The sand valve at the bottom of the existing sandblasting machine controls and adjusts the amount of sand. However, the sand valve is frequently replaced due to the high-pressure erosion of the sand. This not only results in high replacement costs, but also forces the machine to stop working due to the replacement of the sand valve, affecting construction progress and work efficiency.

[0005] (3) The existing sand loading process is to use 4-6 people to move the sand bags to the top of the sandblasting machine for manual sand loading. The sand loading process will also stop due to sand replacement, which affects the construction progress and work efficiency. In addition, when the pressure in the sandblasting machine is too high, residual sand will be sprayed out, which increases the safety risk of personnel.

[0006] (4) After the sandblasting is completed, the tubes need to be covered with pipe caps and sandblasting marks are made. On the other hand, it is necessary to prevent sand and dust from rising and making the construction environment worse. However, the existing method is to manually press the pipe caps onto the tubes, which is slow to install and makes the construction efficiency low. Utility Model Content

[0007] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a sandblasting, pressurizing and sand feeding integrated machine to solve the problems of high use cost and low construction efficiency of the existing sandblasting equipment.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] The utility model provides a sandblasting, pressurizing and sand-feeding integrated machine, comprising a factory instrument air, a pressurizing device, an automatic sandblasting machine, a sand-feeding device and a pipe cap filling device. The factory instrument air duct is connected to the sandblasting gun in the automatic sandblasting machine via the pressurizing device; the top feed port of the automatic sandblasting machine is connected to the discharge port of the conveying mechanism in the sand-feeding device via a sand pipe and a sand feed valve; the machine also comprises a pipe cap filling device for plugging pipe caps during the sandblasting process;

[0010] The boosting equipment includes a first supercharger, a second supercharger, a third supercharger, a boosting tank and several buffer tanks. The air inlet of the first boosting valve in the first supercharger is connected to the factory instrument air through a pipeline via a switch control valve; the air outlet of the first boosting tank in the first supercharger is connected to the air inlets on the top of several buffer tanks through an air duct in sequence via a pneumatic switch control valve and a switch valve; the several buffer tanks are connected in series through an air pipe via a pressure control valve, and the air outlet of the last buffer tank is connected to the air inlet of the boosting tank through the air pipe; the first air inlet on the boosting tank is connected to the air inlet on the top of the automatic sandblasting machine through an air pipe via a first air inlet valve; the second air inlet in the boosting tank is connected to the air inlet of the second boosting valve in the second supercharger through an air pipe; the third air inlet in the boosting tank is connected to the air inlet of the third boosting valve in the third supercharger through an air pipe.

[0011] Preferably, the automatic sand blasting machine includes an upper hopper, and two lower hoppers are provided at the bottom of the upper hopper, namely a first hopper and a second hopper; a first sand level gauge and a third sand level gauge are provided on one side of the upper hopper, and the first sand level gauge is located at the upper part of the upper hopper, and the third sand level gauge is located at the lower part of the upper hopper; a second sand level gauge and a fourth sand level gauge are provided on the other side of the upper hopper, and the second sand level gauge is lower than the first sand level gauge and higher than the third sand level gauge, and the fourth sand level gauge is lower than the third sand level gauge, wherein the first sand level gauge, the second sand level gauge, the third sand level gauge and the fourth sand level gauge are used to detect the height of the sand in the upper hopper, when the amount of sand reaches the first sand level gauge or the second sand level gauge, the sand inlet valve is closed, the conveying mechanism is shut down, and the feeding is stopped, when the amount of sand reaches the third sand level gauge or the fourth sand level gauge, the sand inlet valve is opened, the conveying mechanism is started, and the feeding starts; an exhaust valve is provided on the upper part of the upper hopper; and the upper hopper is provided with a pressure transmitter.

[0012] Preferably, the first air inlet on the booster tank is connected to the air inlet of the sandblasting gun in the first silo of the automatic sandblasting machine through a branch air pipe via a first pressure regulating valve, and the first air inlet on the booster tank is connected to the air inlet of the sandblasting gun in the second silo of the automatic sandblasting machine through another branch air pipe via a second pressure regulating valve; the air outlet of the second booster tank in the second supercharger is connected to the air inlet at the bottom of the second silo through an air pipe via a third air inlet valve; the air outlet of the third booster tank in the third supercharger is connected to the air inlet at the bottom of the first silo through an air pipe via a second air inlet valve.

[0013] Preferably, the volumes of the buffer tanks are all set to 20 cubic meters, and there are 3 of them, namely the first buffer tank, the second buffer tank, and the third buffer tank. The first buffer tank, the second buffer tank, and the third buffer tank are respectively provided with a pressure transmitter; the air outlet in the first buffer tank is connected to another air inlet in the second buffer tank through an air pipe via a pressure control valve, the air outlet in the second buffer tank is connected to another air inlet in the third buffer tank through an air pipe via a pressure control valve, and the air outlet of the third buffer tank is connected to the air inlet of the boosting tank through an air pipe.

[0014] Preferably, the sand conveying equipment includes a belt conveyor platform, a bracket, a sand pool, and a conveying mechanism. The belt conveyor platform is provided with an infrared switch near one end of the sand pool to detect whether a sand bag passes through. When a sand bag is detected, the belt conveyor platform stops rotating; the bracket is used to support the conveying mechanism, and the tail of the conveying mechanism extends into the sand pool.

[0015] Preferably, the pipe cap filling device includes a cylinder, a pipe cap bin, several pipe caps, a joystick and a filling bin. A pipe cap bin is provided on each side of the cylinder, and several pipe caps are built in the pipe cap bin. A joystick is provided on one side of the pipe cap bin, which is used to trigger the start-up cylinder to press the pipe cap into the tube array when the joystick is pushed. The filling bin is located below the cylinder, and a limit switch is provided on the pipe cap bin near the cylinder position. When the cylinder reaches the red limit switch position, the current pipe cap is filled, and the cylinder is triggered to retract for the next filling. With this arrangement, there is no need for manual effort to press the pipe cap tightly onto the tube array, which has high work efficiency and saves time and effort.

[0016] The beneficial effects of the utility model are as follows: the sandblasting, pressurizing and sand feeding integrated machine of the utility model introduces the pressurizing equipment through the factory instrument air, thereby reducing the cost of using the existing compressor and the environmental pollution caused by using the compressor, and better solving the problems of high cost and low construction efficiency of the existing sandblasting equipment, as follows:

[0017] (1) By using a booster valve, a booster tank and three buffer tanks in series, the instrument air has sufficient volume and pressure to provide sandblasting power, thereby improving the sandblasting effect;

[0018] (2) A booster tank is set at the front end of the instrument air entering the sandblasting gun to adjust the pressure to about 11 bar, so that the pressure increases, further improving the sandblasting power and effect, which not only reduces the use cost and pollution, but also realizes the controllable and adjustable use pressure and visualization function;

[0019] (3) Use instrument air pressure to blow sand into the sandblasting tube, and use the sand level meter to detect and control the opening and closing of the sand inlet valve and the air valve to perform sandblasting operations, which reduces personnel intervention, reduces safety risks, and reduces the consumption of replacing sand valves, achieving low cost and low risk;

[0020] (4) The sand bags are sent to the sand pool by the conveyor belt. When the infrared switch detects the sand bags, it stops rotating. At this time, only one worker is needed to pour the sand into the sand pool, which further reduces the labor cost and the risks generated by the personnel during the construction process.

[0021] (5) The pipe cap filling device is used to press the pipe caps onto the tubes, which does not require manual labor to operate, resulting in high work efficiency, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic structural diagram of a sandblasting, pressurizing and sand feeding integrated machine provided in an embodiment of the present utility model;

[0024] Figure 2 Schematic diagram of the structure of the tube cap filling device.

[0025] Description of reference numerals:

[0026] Factory instrument air 1, pipe cap filling device 2, sand inlet valve 3, conveying mechanism 4, first supercharger 5, second supercharger 6, third supercharger 7, boosting tank 8, on-off control valve 9, pneumatic on-off control valve 10, on-off valve 11, pressure control valve 12, first air inlet valve 13, exhaust valve 14, upper silo 17, first silo 18, second silo 19, first sand level gauge 20, second sand level gauge 21, third sand level gauge 22, fourth sand level gauge 23, pressure transmitter 24, first buffer tank 25, second buffer tank 26, third buffer tank 27, belt conveyor 28, bracket 29, sand pool 30, infrared switch 31, first pressure regulating valve 32, second pressure regulating valve 33;

[0027] Cylinder 201, pipe cap bin 202, pipe cap 203, joystick 204, filling bin 205, limit switch 206;

[0028] A first boosting valve 501 and a first boosting tank 502;

[0029] Second boost valve 601, second boost tank 602;

[0030] The third boost valve 701 and the third boost tank 702 . DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1, as Figures 1 to 2 As shown, a sandblasting, pressurizing and sand feeding integrated machine includes a factory instrument air 1, a pressurizing device, an automatic sandblasting machine, a sand feeding device and a pipe cap filling device 2. The factory instrument air 1 pipeline is connected to the sandblasting gun in the automatic sandblasting machine through the pressurizing device; the top feed port of the automatic sandblasting machine is connected to the discharge port of the conveying mechanism 4 in the sand feeding device through a sand pipe and a sand feed valve 3; the machine also includes a pipe cap filling device 2 for plugging pipe caps during the sandblasting process.

[0033] Furthermore, Figure 1 As shown, the boosting equipment includes a first supercharger 5, a second supercharger 6, a third supercharger 7, a boosting tank 8 and several buffer tanks. The air inlet of the first boosting valve 501 in the first supercharger 5 is connected to the factory instrument air through a pipeline via a switch control valve 9; the air outlet of the first boosting tank 502 in the first supercharger 5 is connected to the air inlet on the top of several buffer tanks through an air duct in sequence via a pneumatic switch control valve 10 and a switch valve 11; the several buffer tanks are connected through an air pipeline via The pressure control valve 12 is connected in series, and the air outlet of the last buffer tank is connected to the air inlet of the boosting tank 8 through the air pipe; the first air inlet on the boosting tank 8 is connected to the air inlet on the top of the automatic sandblasting machine through the air pipe via the first air inlet valve 13; the second air inlet in the boosting tank 8 is connected to the air inlet of the second boosting valve 601 in the second supercharger 6 through the air pipe; the third air inlet in the boosting tank 8 is connected to the air inlet of the third boosting valve 701 in the third supercharger 7 through the air pipe.

[0034] Furthermore, in Example 1, Figure 1As shown, the automatic sandblasting machine includes an upper silo 17, and two lower silos are provided at the bottom of the upper silo 17, namely a first silo 18 and a second silo 19; a first sand level meter 20 and a third sand level meter 22 are provided on one side of the upper silo 17, and the first sand level meter 20 is located at the upper part of the upper silo 17, and the third sand level meter 22 is located at the lower part of the upper silo 17; a second sand level meter 21 and a fourth sand level meter 23 are provided on the other side of the upper silo 17, and the second sand level meter 21 is lower than the first sand level meter 20 and higher than the third sand level meter 22, and the fourth sand level meter 23 is lower than the first sand level meter 20. The meter is lower than the third sand level meter 22, among which the first sand level meter, the second sand level meter, the third sand level meter and the fourth sand level meter are used to detect the height of the sand in the upper silo. When the amount of sand reaches the first sand level meter or the second sand level meter, the sand inlet valve is closed, the conveying mechanism is shut down, and the feeding is stopped. When the amount of sand reaches the third sand level meter or the fourth sand level meter, the sand inlet valve is opened, the conveying mechanism is started, and the feeding begins. An exhaust valve 14 is provided on the upper part of the upper silo for extracting the air in the silo. A pressure transmitter 24 is provided in the upper silo 17 for detecting the air pressure in the silo.

[0035] Further, such as Figure 1 As shown, the first air inlet on the booster tank 8 is connected to the air inlet of the sandblasting gun in the first silo 18 in the automatic sandblasting machine through a branch air pipe via the first pressure regulating valve 32, and the first air inlet on the booster tank 8 is connected to the air inlet of the sandblasting gun in the second silo 19 in the automatic sandblasting machine through another branch air pipe via the second pressure regulating valve 33; the air outlet of the second booster tank 602 in the second supercharger 6 is connected to the air inlet at the bottom of the second silo 19 through the air pipe via the third air inlet valve 16; the air outlet of the third booster tank 702 in the third supercharger 7 is connected to the air inlet at the bottom of the first silo 18 through the air pipe via the second air inlet valve 15.

[0036] Further, such as Figure 1 As shown, the volume of the buffer tanks is set to 20 cubic meters, and there are 3 of them, namely the first buffer tank 25, the second buffer tank 26, and the third buffer tank 27. A pressure transmitter 24 is provided on each of the first buffer tank 25, the second buffer tank 26, and the third buffer tank 27; the gas outlet of the first buffer tank 25 is connected to another gas inlet of the second buffer tank 26 through an air pipe via a pressure control valve 12, the gas outlet of the second buffer tank 26 is connected to another gas inlet of the third buffer tank 27 through an air pipe via a pressure control valve 12, and the gas outlet of the third buffer tank 27 is connected to the gas inlet of the boosting tank 8 through an air pipe.

[0037] Further, such as Figure 1As shown, the sand conveying equipment includes a belt conveyor platform 28, a bracket 29, a sand pool 30, and a conveying mechanism 4. The belt conveyor platform 28 is provided with an infrared switch 31 at one end close to the sand pool 30 for detecting whether a sandbag passes through. When a sandbag is detected, the belt conveyor platform stops rotating; the bracket 29 is used to support the conveying mechanism 4, and the tail of the conveying mechanism 4 extends into the sand pool 30.

[0038] Further, such as Figure 2 As shown, the pipe cap filling device 2 includes a cylinder 201, a pipe cap bin 202, several pipe caps 203, an operating lever 204 and a filling bin 205. A pipe cap bin 202 is provided on each side of the cylinder 201, and several pipe caps 203 are built in the pipe cap bin 202. A operating lever 204 is provided on one side of the pipe cap bin 202, which is used to trigger the cylinder to press down the pipe cap into the tube array when the operating lever is pushed. The filling bin 205 is located below the cylinder 201, and a limit switch 206 is provided on the pipe cap bin 202 near the cylinder 201. When the cylinder reaches the red limit switch position, the current pipe cap is filled, and the cylinder is triggered to retract for the next filling. With this arrangement, there is no need to spend manual effort to press the pipe cap tightly onto the tube array, which has high work efficiency and saves time and effort.

[0039] The working mode of the sandblasting pressurized sand feeding device in the embodiment of the present invention is as follows:

[0040] (1) Use 6-7 bar factory instrument air to introduce into the first booster, adjust the pressure to about 10 bar and enter three 20-liter buffer tanks;

[0041] (2) When the pressure in the third buffer tank is lower than 8 bar, the pressure control valve between the third buffer tank and the second buffer tank is opened, so that the gas in the second buffer tank is continuously replenished into the third buffer tank, and the pressure in the third buffer tank is maintained above 8 Bar; when the pressure in the second buffer tank is lower than 8 bar, the pressure control valve between the second buffer tank and the first buffer tank is opened, so that the gas in the first buffer tank is continuously replenished into the second buffer tank, and the pressure in the second buffer tank is maintained above 8 Bar. At this time, the pneumatic switch control valve and the switch valve on the top of the first buffer tank are opened for continuous air replenishment. At this time, the three buffer tanks are used in series, so that the instrument air has sufficient quantity and pressure to provide sandblasting power, thereby improving the sandblasting effect. It should be noted that when the pressure in the buffer tank reaches below the minimum set value, the pneumatic switch control valves on their respective tops are opened to maintain full air intake, and the switch valves are closed after the pressure in the tank reaches the maximum setting;

[0042] (3) The booster tank at the front end of the sandblasting gun adjusts the pressure to about 11 bar, which can increase the pressure and further improve the sandblasting power and effect;

[0043] (4) Automatic sand loading only requires one person to operate. The sand bags are sent to the sand pool through the belt conveyor. When the infrared switch on the belt conveyor detects the sand bags, the belt conveyor stops rotating, and the worker can pour the sand into the sand pool. This not only reduces labor costs, but also reduces the risks generated by personnel during construction.

[0044] (5) When the sandblasting button is turned on, the second air inlet valve and the third air inlet valve are opened to perform the sandblasting operation; when the third sand level meter or the fourth sand level meter detects that sand needs to be added, the first air inlet valve is closed and the exhaust valve is opened; when the pressure transmitter on the sandblasting machine detects that the pressure P in the sandblasting machine is lower than 1 bar, the conveying mechanism and the sand inlet valve on the top of the sandblasting machine are started to feed sand; when the amount of sand fed reaches the first sand level meter or the second sand level meter, the conveying mechanism and the sand inlet valve are stopped in conjunction to stop feeding, which can reduce personnel intervention and safety risks, and can also reduce the consumption of replacing sand valves to reduce costs and risks;

[0045] (6) After the sandblasting is completed, the handheld filling cap device pushes the joystick in the filling cap device to push the cap into the filling bin and triggers the starting cylinder to press the cap into the tube array. When the cylinder reaches the limit switch position, the current cap is filled. At this time, the trigger cylinder retracts and the next filling is carried out, which has high work efficiency and saves time and effort.

[0046] Obviously, the embodiments described above are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the various embodiments of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A sandblasting, pressurizing and sand feeding integrated machine, characterized by: The system includes factory instrument air, a pressure-boosting device, an automatic sandblasting machine, a sand delivery device, and a pipe cap filling device. The factory instrument air duct is connected to the sandblasting gun in the automatic sandblasting machine via the pressure-boosting device; the top feed port of the automatic sandblasting machine is connected to the discharge port of the conveying mechanism in the sand delivery device via a sand pipe and a sand feed valve; the system also includes a pipe cap filling device for filling pipe caps during the sandblasting process; The boosting equipment includes a first supercharger, a second supercharger, a third supercharger, a boosting tank and several buffer tanks. The air inlet of the first boosting valve in the first supercharger is connected to the factory instrument air through a pipeline via a switch control valve; the air outlet of the first boosting tank in the first supercharger is connected to the air inlets on the top of several buffer tanks through an air duct in sequence via a pneumatic switch control valve and a switch valve; the several buffer tanks are connected in series through an air pipe via a pressure control valve, and the air outlet of the last buffer tank is connected to the air inlet of the boosting tank through the air pipe; the first air inlet on the boosting tank is connected to the air inlet on the top of the automatic sandblasting machine through an air pipe via a first air inlet valve; the second air inlet in the boosting tank is connected to the air inlet of the second boosting valve in the second supercharger through an air pipe; the third air inlet in the boosting tank is connected to the air inlet of the third boosting valve in the third supercharger through an air pipe.

2. The sandblasting, pressurizing and sand feeding integrated machine according to claim 1, characterized in that: The automatic sandblasting machine includes an upper silo, and two lower silos are provided at the bottom of the upper silo, namely the first silo and the second silo; a first sand level gauge and a third sand level gauge are provided on one side of the upper silo, and the first sand level gauge is located at the upper part of the upper silo, and the third sand level gauge is located at the lower part of the upper silo; a second sand level gauge and a fourth sand level gauge are provided on the other side of the upper silo, and the second sand level gauge is lower than the first sand level gauge and higher than the third sand level gauge, and the fourth sand level gauge is lower than the third sand level gauge; an exhaust valve is provided on the top of the upper silo; a pressure transmitter is provided on the upper silo; and a pipe cap filling device is provided in the first silo and the second silo, respectively.

3. The sandblasting, pressurizing and sand feeding integrated machine according to claim 2, characterized in that: The first air inlet on the boosting tank is connected to the air inlet of the sandblasting gun in the first silo of the automatic sandblasting machine through a branch air pipe via a first pressure regulating valve, and the first air inlet on the boosting tank is connected to the air inlet of the sandblasting gun in the second silo of the automatic sandblasting machine through another branch air pipe via a second pressure regulating valve; the air outlet of the second boosting tank in the second supercharger is connected to the air inlet at the bottom of the second silo through an air pipe via a third air inlet valve; the air outlet of the third boosting tank in the third supercharger is connected to the air inlet at the bottom of the first silo through an air pipe via a second air inlet valve.

4. The sandblasting, pressurizing and sand feeding integrated machine according to claim 3, characterized in that: The volumes of the buffer tanks are all set to 20 cubic meters, and there are 3 of them, namely the first buffer tank, the second buffer tank, and the third buffer tank. The first buffer tank, the second buffer tank, and the third buffer tank are respectively provided with a pressure transmitter; the air outlet in the first buffer tank is connected to another air inlet in the second buffer tank through an air pipe via a pressure control valve, the air outlet in the second buffer tank is connected to another air inlet in the third buffer tank through an air pipe via a pressure control valve, and the air outlet of the third buffer tank is connected to the air inlet of the boosting tank through an air pipe.

5. The sandblasting, pressurizing and sand feeding integrated machine according to claim 1, characterized in that: The sand conveying equipment includes a belt conveyor platform, a bracket, a sand pool, and a conveying mechanism. The belt conveyor platform is provided with an infrared switch at one end close to the sand pool. The bracket is used to support the conveying mechanism, and the tail of the conveying mechanism extends into the sand pool.

6. The sandblasting, pressurizing and sand feeding integrated machine according to claim 1, characterized in that: The pipe cap filling device includes a cylinder, a pipe cap bin, several pipe caps, a joystick and a filling bin. A pipe cap bin is provided on each side of the cylinder, and several pipe caps are built into the pipe cap bin. A joystick is provided on one side of the pipe cap bin. The filling bin is located below the cylinder, and a limit switch is provided on the pipe cap bin near the cylinder.

Images