A device and process for environmentally friendly dry sandblasting to remove residual glue

Abstract

A device and process for environmentally friendly dry sandblasting to remove residual glue, including a glue removal chamber, a dry sand nozzle, a cyclone separator, a bag dust collector, an induced draft fan and a sorting tank, the glue removal chamber including a sealed shell and a glue removal platform, the sealed shell is arranged on the glue removal platform, a parallel trolley track is arranged on the glue removal platform, the trolley track is rollingly connected to the feeding and discharging trolley, the feeding and discharging trolley is provided with a component fixing frame, a manipulator is arranged on the glue removal platform, the dry sand nozzle is installed on the outrigger arm of the manipulator, the bottom of the glue removal chamber is connected to an exhaust pipe, the other end of the exhaust pipe is connected to the cyclone separator, and the bottom of the cyclone separator is connected to a solid phase storage tank. The present invention adopts a mature dry sandblasting process as the leading process for removing residual glue, the glue removal efficiency is high, the energy consumption is low, the induced draft fan is used to suck at the end of the system, so that the whole system is in a negative pressure state, which can effectively prevent the overflow of dust-containing gas and achieve environmental protection goals, and adopts a sorting liquid with a specific gravity greater than the specific gravity of the glue particles as a means of recovering the glue particles.

Description

Technical Field

[0001] The invention relates to the technical field of residual glue removal, and in particular to a device and process for environmentally friendly residual glue removal by dry sandblasting. Background Art

[0002] The tracks of tracked vehicles can be inlaid with rubber blocks, which is equivalent to putting on a pair of "safety shoes" for tank tracks. The inlaid rubber blocks have a certain cushioning effect, which ensures smooth driving, high comfort, low noise, and no damage to the road surface. However, the cost of inlaid rubber blocks is high, and the rubber blocks are prone to aging and need to be replaced frequently. Before re-gluing the track plates, the remaining rubber on the track plates must be removed to ensure the performance of the subsequent rubber coating. The existing processes for removing residual rubber include incineration, mechanical cutting, solvent immersion, hot melt, high-pressure water jet cutting, etc. Due to the complex shape of the components, The location of residual glue is difficult to control, and these methods are not satisfactory. The way to remove residual glue on the track plate is actually basically similar to the operation of cleaning dirt on the surface of mechanical components. The residual glue on the track is not strong, only about one-tenth of Q235 steel. In the analysis of various methods for cleaning dirt, dry sandblasting can be used as an optional method for removing residual glue on track plates. Dry sandblasting consumes less power, has high efficiency in removing dirt, and can adapt to parts of different shapes, but it seriously pollutes the environment and poses a great threat to the health and work safety of operators. Therefore, its use has been restricted in recent years. Summary of the invention

[0003] In order to overcome the problem of environmental pollution caused by sandblasting for removing residual glue, the present invention provides a device and process for removing residual glue by dry sandblasting in an environmentally friendly manner.

[0004] The technical solution adopted by the present invention is:

[0005] A device for environmentally friendly dry sandblasting glue removal comprises a glue removal chamber, a dry sand nozzle, a cyclone separator, a bag dust collector, an induced draft fan and a sorting tank, wherein the glue removal chamber comprises a sealed shell and a glue removal platform, the sealed shell is arranged on the glue removal platform, parallel trolley tracks are arranged on the glue removal platform, the trolley tracks are rollingly connected to the inlet and outlet trolleys, a component fixing frame is arranged on the inlet and outlet trolleys, a manipulator is arranged on the glue removal platform, the dry sand nozzle is installed on the outrigger arm of the manipulator, an exhaust pipe is connected to the bottom of the glue removal chamber, the other end of the exhaust pipe is connected to the cyclone separator, the bottom of the cyclone separator is connected to a solid phase storage tank, the top of the cyclone separator is connected to the bag dust collector through a pipeline, the air outlet of the bag dust collector is connected to the induced draft fan, the air outlet of the induced draft fan is connected to an exhaust pipe, the outlet of the solid phase storage tank is connected to an impact filter frame through a pipeline, and the impact filter frame can be lifted and hoisted above the sorting tank.

[0006] A cover door which can be rotatably opened is arranged on a side of the sealing shell of the glue removal chamber facing the trolley track.

[0007] The robot comprises a column and an outrigger arm, the column is rotatably connected to the degumming platform, the outrigger arm is connected to the top of the column, the outrigger arm is a two-section connecting rod structure, the bottom of the column extends to the bottom of the degumming platform and is connected to a rotating motor.

[0008] A loading and unloading platform is arranged on one side of the degumming platform corresponding to the extending side of the trolley track, and the trolley track extends out of the degumming chamber and extends to the loading and unloading platform.

[0009] A flushing pump is arranged outside the separation tank. A water outlet pipe is arranged at the bottom of the separation tank, the water outlet pipe is connected to the flushing pump, the water outlet of the flushing pump is connected to a flushing pipe extending upward, and the water outlet of the flushing pipe extends to the top of the impact filter frame.

[0010] A dry sandblasting environmentally friendly process for removing residual glue, the steps of which are:

[0011] P1. Outdoor loading: The loading and unloading trolley retreats along the trolley track to the loading and unloading platform outside the degumming room, installs the crawler on the component fixing frame, and then pushes the loading and unloading trolley into the degumming room to complete the loading;

[0012] P2. Indoor glue removal: The dry sand nozzle is installed on the outrigger arm of the manipulator. Sand flow and compressed air are introduced into the dry sand nozzle to form an air-containing jet. The feeding and discharging trolley is in a stopped state. The manipulator controls the stroke of the dry sand nozzle. The manipulator's column rotates around the vertical axis. The two-section structure of the outrigger arm of the manipulator achieves full coverage of the glue removal surface.

[0013] P3. Environmental dust removal: The suction pipe draws the sand, rubber and dust-containing gas mixture in the glue removal chamber into the cyclone separator. The solid phase storage tank at the bottom of the cyclone separator collects the separated sand and rubber particles. The dust-containing gas at the top of the cyclone separator is dedusted by the bag filter and then exhausted into the atmosphere along the exhaust pipe by the induced draft fan.

[0014] P4. Recovery of solid phase: The sand and colloid particles in the solid phase storage tank are introduced into the impact filter frame. At this time, the impact filter frame is lowered into the sorting tank. A CaCl2 solution with a specific gravity of about 1.5 is injected into the sorting tank. The specific gravity of the colloid particles is less than that of the CaCl2 solution, and the specific gravity of the CaCl2 solution is less than that of the sand particles. In the impact filter frame, the colloid particles will float on the surface of the liquid, and the colloid particles are easy to salvage. The sand particles exist at the bottom of the impact filter frame. After the colloid particles are removed, the impact filter frame is lifted from the sorting tank, and the solution in the sorting tank is pumped into the flushing pipe through a flushing pump to impact the accumulated sand in the impact filter frame. Under the impact of the water flow, the fine sand particles smaller than the filter screen of the impact filter frame are discharged, and the coarse sand particles remaining in the impact filter frame are all reusable sand particles.

[0015] Beneficial effects of the present invention: The present invention adopts a mature dry sandblasting process as the dominant process for removing residual glue, which has high glue removal efficiency and low energy consumption. The sandblasting process not only removes residual glue from the track plate, but also performs surface treatment on the track plate. The induced draft fan draws suction at the end of the system to put the entire system in a negative pressure state, which can effectively prevent the overflow of dust-containing gas and achieve environmental protection goals. A sorting liquid with a specific gravity greater than that of the rubber particles is used as a means to recover the rubber particles. The impact filter frame is used for simple and convenient sorting, and the separation is thorough and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 Schematic diagram of the separation of coarse and fine sand particles when recovering sand particles in the present invention.

[0018] Among them: 1- degumming room; 2- manipulator; 3- dry sand nozzle; 4- loading and unloading trolley; 5- trolley track; 6- degumming platform; 7- exhaust pipe; 8- cyclone separator; 9- bag dust collector; 10- exhaust pipe; 11- induced draft fan; 12- solid phase storage tank; 13- component fixing frame; 14- sorting tank; 15- impact filter frame; 16- flushing pump; 17- loading and unloading platform; 18- flushing pipe. DETAILED DESCRIPTION

[0019] A dry sandblasting environmentally friendly residual glue removal device comprises a glue removal chamber 1, a dry sand nozzle 3, a cyclone separator 8, a bag dust collector 9, an induced draft fan 11 and a sorting tank 14. The glue removal chamber 1 comprises a sealed shell and a glue removal platform 6. The sealed shell is arranged on the glue removal platform 6. The glue removal platform 6 is provided with a parallel trolley track 5. The trolley track 5 is rollingly connected to the feeding and discharging trolley 4. The feeding and discharging trolley 4 is provided with a component fixing frame 13. A manipulator 2 is arranged on the glue removal platform 6. The dry sand nozzle 3 is installed on the outreaching arm of the manipulator 2. The bottom of the glue removal chamber 1 is connected to an exhaust pipe 7. The other end of the exhaust pipe 7 is connected to the cyclone separator 8. The bottom of the cyclone separator 8 is connected to a solid phase storage tank 12. The top of the cyclone separator 8 is connected to the bag dust collector 9 through a pipeline. The air outlet of the bag dust collector 9 is connected to the induced draft fan 11. The air outlet of the induced draft fan 11 is connected to the exhaust pipe 10. The discharge port of the solid phase storage tank 12 is connected to the impact filter frame 15 through a pipeline. The impact filter frame 15 can be lifted and hoisted above the sorting tank 14. The impact filter frame 15 can be hoisted on the support frame through a pulley and a wire rope to prevent the overflow of dust-containing gas during the degumming process. Under the suction action of the induced draft fan 11, the exhaust pipe 7, the cyclone separator 8 and the bag dust collector 9 extract the mixture of sand and glue particles out of the degumming chamber 1, and at the same time form a certain vacuum in the degumming chamber 1.

[0020] The sealed shell of the degumming chamber 1 is provided with a cover door that can be rotated and opened on one side facing the trolley track 5. The degumming platform 6 is provided with a loading and unloading platform 17 on the side corresponding to the extension of the trolley track 5. The trolley track 5 extends out of the degumming chamber 1 and extends to the loading and unloading platform 17. If the crawler needs to change the workstation, the loading and unloading trolley 4 will send the component fixing frame to the loading and unloading position of the loading and unloading platform 17 outside the degumming chamber 1 to complete the change of the workstation. This operation mode can effectively simplify the system structure.

[0021] The manipulator 2 includes a column and an outrigger arm. The column is rotatably connected to the degumming platform 6, and the outrigger arm is connected to the top of the column. The outrigger arm is a two-section connecting rod structure. The bottom of the column extends to the bottom of the degumming platform 6 and is connected to a rotating motor. The column of the manipulator 2 can rotate around a vertical axis. The two-section structure of the outrigger arm can adjust the jet position of the dry sand nozzle 3 and ensure that the dry sand nozzle 3 is vertically ejected toward the degumming surface.

[0022] A flushing pump 16 is arranged outside the sorting tank 14 , and a water outlet pipe is arranged at the lower part of the sorting tank 14 , which is connected to the flushing pump 16 . The water outlet of the flushing pump 16 is connected to a flushing pipe 18 extending upward, and the water outlet of the flushing pipe 18 extends to the top of the impact filter frame 15 .

[0023] A dry sandblasting environmentally friendly process for removing residual glue, the steps of which are:

[0024] P1. Outdoor loading: The loading and unloading trolley 4 withdraws along the trolley track 5 to the loading and unloading platform 17 outside the degumming chamber 1, installs the crawler on the component fixing frame 13, and then pushes the loading and unloading trolley 4 into the degumming chamber 1 to complete the loading;

[0025] P2. Indoor glue removal: The dry sand nozzle 3 is installed on the outrigger arm of the manipulator 2. Sand flow and compressed air are introduced into the dry sand nozzle 3 to form an air-containing jet. The feeding and discharging trolley is in a stopped state. The manipulator controls the stroke of the dry sand nozzle 3. The column of the manipulator 2 rotates around the vertical axis. The two-section structure of the outrigger arm of the manipulator 2 achieves full coverage of the glue removal surface. The manipulator 2 can adjust the position of the jet and ensure that the dry sand nozzle 3 is vertically directed to the glue removal surface.

[0026] P3. Environmental dust removal: The suction pipe 7 draws the sand, rubber and dust-containing gas mixture in the glue removal chamber 1 into the cyclone separator 8. The solid phase storage tank 12 at the bottom of the cyclone separator 8 collects the separated sand and rubber. The dust-containing gas at the top of the cyclone separator 8 is dedusted by the bag filter 9 and then exhausted into the atmosphere along the exhaust pipe 10 by the induced draft fan 11. The suction effect of the induced draft fan 11 puts the entire system in a negative pressure state to avoid the external discharge of dust-containing gas. Finally, the flue gas is discharged up to standard through the efficient bag filter 9.

[0027] P4. Solid phase recovery: The sand and colloid particles in the solid phase storage tank 12 are introduced into the impact filter frame 15. At this time, the impact filter frame 15 is lowered into the sorting tank 14. The CaCl2 solution with a specific gravity of about 1.5 is injected into the sorting tank 14. The specific gravity of the colloid particles is about 1.2. Therefore, the specific gravity of the colloid particles is less than the specific gravity of the CaCl2 solution, and the specific gravity of the CaCl2 solution is less than the specific gravity of the sand particles. In the impact filter frame 15, the colloid particles will float on the surface of the liquid, and the colloid particles are easy to salvage. The sand particles are at the bottom of the impact filter frame 15 and the colloid particles are cleaned. After removal, lift the impact filter frame 15 from the sorting tank 14, and use the solution in the sorting tank 14 to pump into the flushing pipe 18 through the flushing pump 16 to impact the accumulated sand in the impact filter frame 15. Under the impact of water flow, fine sand particles smaller than the filter screen of the impact filter frame 15 are discharged, and the coarse sand particles remaining in the impact filter frame 15 are all reusable sand particles. The aperture of the filter screen of the impact filter frame 15 can be determined according to the particle size of the selected sand particles. Usually, the particle size of the sand particles is about 1.4 mm. The fine sand particles accumulated at the bottom of the sorting tank 14 can be cleaned regularly.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A process for removing residual glue by dry sandblasting and environmental protection, using a device for removing residual glue by dry sandblasting and environmental protection, characterized in that: The glue removal device comprises a glue removal chamber (1), a dry sand nozzle (3), a cyclone separator (8), a bag dust collector (9), an induced draft fan (11) and a sorting tank (14). The glue removal chamber (1) comprises a sealed shell and a glue removal platform (6). The sealed shell is arranged on the glue removal platform (6). A parallel trolley track (5) is arranged on the glue removal platform (6). A material inlet and outlet trolley (4) is rollingly connected to the trolley track (5). A component fixing frame (13) is arranged on the material inlet and outlet trolley (4). A manipulator (2) is arranged on the glue removal platform (6). The dry sand nozzle (3) is installed on the outrigger arm of the manipulator (2). The bottom of the degumming chamber (1) is connected to an exhaust pipe (7), the other end of the exhaust pipe (7) is connected to a cyclone separator (8), the bottom of the cyclone separator (8) is connected to a solid phase storage tank (12), the top of the cyclone separator (8) is connected to a bag dust collector (9) through a pipeline, the air outlet of the bag dust collector (9) is connected to an induced draft fan (11), the air outlet of the induced draft fan (11) is connected to an exhaust pipe (10), the discharge port of the solid phase storage tank (12) is connected to an impact filter frame (15) through a pipeline, and the impact filter frame (15) can be lifted and hoisted above the sorting tank (14); The steps of degumming process are: P1. Outdoor loading: The loading and unloading trolley (4) withdraws along the trolley track (5) to the loading and unloading platform (17) outside the glue removal chamber (1), the crawler is installed on the component fixing frame (13), and then the loading and unloading trolley (4) is pushed into the glue removal chamber (1) to complete the loading; P2. Indoor glue removal: The dry sand nozzle (3) is installed on the outrigger arm of the manipulator (2). Sand flow and compressed air are introduced into the dry sand nozzle (3) to form an air-containing jet. The feeding and discharging trolley (4) is in a stopped state. The manipulator controls the stroke of the dry sand nozzle (3). The column of the manipulator (2) rotates around the vertical axis. The two-section structure of the outrigger arm of the manipulator (2) achieves full coverage of the glue removal surface. P3. Environmental dust removal: The air extraction pipe (7) extracts the sand, rubber and dust-containing gas mixture in the glue removal chamber (1) into the cyclone separator (8). The solid phase storage tank (12) at the bottom of the cyclone separator (8) collects the separated sand and rubber. The dust-containing gas at the top of the cyclone separator (8) is dedusted by the bag filter (9) and then exhausted into the atmosphere through the exhaust pipe (10) by the exhaust fan (11). P4. Solid phase recovery: The sand and colloid particles in the solid phase storage tank (12) are introduced into the impact filter frame (15). At this time, the impact filter frame (15) is lowered into the sorting tank (14). A CaCl2 solution with a specific gravity of 1.5 is injected into the sorting tank (14). The specific gravity of the colloid particles is less than that of the CaCl2 solution, and the specific gravity of the CaCl2 solution is less than that of the sand particles. In the impact filter frame (15), the colloid particles will float on the surface of the liquid, and the colloid particles are easy to salvage. The sand particles are stored at the bottom of the impact filter frame (15). After the colloid particles are removed, the impact filter frame (15) is lifted from the sorting tank (14), and the solution in the sorting tank (14) is pumped into the flushing pipe (18) through the flushing pump (16) to impact the accumulated sand in the impact filter frame (15). Under the impact of the water flow, the sand particles smaller than the filter screen of the impact filter frame (15) are discharged, and the sand particles remaining in the impact filter frame (15) are all reusable sand particles.

2. The process for removing residual glue by dry sandblasting and environmental protection according to claim 1 is characterized in that: A cover door that can be rotatably opened is arranged on a side of the sealed shell of the adhesive removal chamber (1) facing the trolley track (5).

3. The process for removing residual glue by dry sandblasting and environmental protection according to claim 1 is characterized in that: The robot (2) comprises a column and an outrigger arm, wherein the column is rotatably connected to the degumming platform (6), and the outrigger arm is connected to the top of the column. The outrigger arm is a two-section connecting rod structure, and the bottom of the column extends to the bottom of the degumming platform (6) and is connected to a rotating motor.

4. The process for removing residual glue by dry sandblasting and environmental protection according to claim 1 is characterized in that: A loading and unloading platform (17) is provided on the side of the degumming platform (6) corresponding to the extended side of the trolley track (5), and the trolley track (5) extends out of the degumming chamber (1) and onto the loading and unloading platform (17).

5. The process for removing residual glue by dry sandblasting and environmental protection according to claim 1 is characterized in that: A flushing pump (16) is arranged outside the separation tank (14), and a water outlet pipe is arranged at the bottom of the separation tank (14). The water outlet pipe is connected to the flushing pump (16). The water outlet of the flushing pump (16) is connected to a flushing pipe (18) extending upward, and the water outlet of the flushing pipe (18) extends to the top of the impact filter frame (15).

Images