Refining treatment device for boiler accessories after machining and forming

Abstract

The invention belongs to the technical field of boiler row piece production and manufacturing, and particularly relates to a boiler accessory refinement treatment device after machining forming, which comprises a device body, the positioning assembly is used for clamping and fixing boiler row pieces of various models, the positioning assembly comprises a positioning frame fixedly connected to the upper end of the device body, the positioning frame is filled with a plastic material, and an electric heating wire and a condensing coil which are used for heating and cooling the plastic material are arranged on the inner wall of the positioning frame. By arranging the positioning assembly, before polishing, a plastic material in the positioning frame is heated through an electric heating wire, so that the plastic material is heated to be softened, the plastic material is deformed into a shape attached to boiler row pieces, the plastic material is rapidly cooled through a condensing coil, and the efficiency of polishing is improved. And the plastic material is kept in the state of being attached to the boiler row pieces to clamp and position the boiler row pieces, and the positioning device can adapt to positioning work of the boiler row pieces of different shapes and different models.

Description

Technical Field

[0001] The invention belongs to the technical field of boiler panel production and manufacturing, and in particular relates to a device for finely processing boiler accessories after they are processed and formed. Background Art

[0002] Boiler accessories refer to various components and auxiliary equipment used in the boiler system, which work together to ensure the safe, stable and efficient operation of the boiler, mainly including the boiler body, piping system, valves, pumps, boiler fins and control system, etc. Among them, boiler fins, also known as boiler fins or heat exchange fins, are a special accessory in the boiler that can effectively disperse the heat inside the boiler and avoid local overheating caused by heat concentration, thereby protecting the safety of the boiler equipment.

[0003] After the boiler grate is processed and formed, it is usually necessary to grind the inner wall of the circular hole to remove the burrs and irregular surfaces generated during the processing, improve the smoothness of the inner wall of the hole, help improve the fluidity of the fluid, reduce the flow resistance, and at the same time, the inner wall with a smooth surface is less likely to accumulate scale and impurities, reduce the risk of corrosion and wear, and extend the service life of boiler accessories. For example, a boiler accessory grate after forming fine processing device disclosed in the patent document with Chinese publication number CN111300183B can clamp the grate through the clamping plate, and clamp the grate, without the need for manual hand-held grate grinding, reducing the risk of injury to operators.

[0004] However, the above processing device still has the following technical problems when grinding boiler slices:

[0005] When clamping and positioning the boiler slices, only the boiler slices within the specified model range can be clamped and positioned. The clamping effect of the boiler slices with other shapes or beyond the specified model range (i.e., too large or too small models) is poor, and the scope of application is very limited. Different clamping devices need to be replaced according to the shape and model of the boiler slices, which greatly reduces the processing efficiency of the boiler slices;

[0006] During the grinding process, the speed of the grinding roller is often constant. When the grinding roller always maintains a faster speed, it is easy to generate a large amount of grinding heat, which not only easily causes the workpiece surface to deform or burn due to overheating, reducing the yield rate of boiler slices after treatment, but also causes the grinding roller to soften under the influence of cutting heat, shortening the service life of the grinding roller. When the grinding roller always maintains a slower speed, the grinding efficiency will be greatly reduced.

[0007] Therefore, there is an urgent need for a device for fine processing of boiler parts after processing and forming to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to address the problems raised in the above-mentioned background technology and to provide a device that can adapt to the positioning work of boiler slices of different shapes and models, improve the processing efficiency of boiler slices, and at the same time reciprocate and periodically control the rotation speed of the grinding roller, so as to ensure the grinding efficiency while avoiding deformation or burning of the workpiece surface due to overheating, and to carry out fine processing of boiler accessories after processing and forming.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A device for fine processing of boiler parts after processing and forming, comprising:

[0011] device body;

[0012] A positioning assembly is used to clamp and fix various types of boiler slices, and the positioning assembly includes a positioning frame fixedly connected to the upper end of the device body, the interior of the positioning frame is filled with plastic material, and the inner wall of the positioning frame is provided with a heating wire and a condensing coil for heating and cooling the plastic material;

[0013] A grinding assembly is used to grind the inner wall of the circular hole of the boiler slice, the grinding assembly includes a hydraulic cylinder fixedly connected to the upper end of the device body, a lifting plate is fixedly connected to the output end of the hydraulic cylinder, two grinding rollers are symmetrically arranged below the lifting plate, and a driving motor for driving the two grinding rollers to rotate is arranged at the upper end of the lifting plate;

[0014] The regulating component is used to adjust the current of the circuit where the driving motor is located so that the rotation speed of the two grinding rollers changes continuously. The regulating component includes a sliding rheostat for controlling the rotation speed of the driving motor and a driving component for controlling the sliding rheostat.

[0015] Preferably, the sliding rheostat comprises two support plates fixedly connected to the side walls of the lifting plate, a resistance rod fixedly connected between the two support plates, two sliding plates slidably connected to the resistance rod, and the drive motor is connected in series with the power supply device inside the lifting plate through the resistance rod and the sliding plates.

[0016] Preferably, the driving component includes a triangular guide plate fixedly connected to the slide, a lifting rod is provided above the two triangular guide plates, the bottom end of the lifting rod is rotatably connected to a guide wheel through a mounting seat, the two guide wheels respectively contact and roll with the two triangular guide plates, the upper end of the lifting rod is fixedly connected to a U-shaped rod, the upper end of the lifting plate is fixedly connected to two electric telescopic rods for driving the U-shaped rod to move in a vertical direction, and a return spring is provided between the two slides.

[0017] Preferably, the grinding assembly also includes a driving rod and two transmission rods fixedly connected to the lower end of the lifting plate, the driving rod is fixedly connected to the output end of the driving motor, the two transmission rods are coaxially fixedly connected to the two grinding rollers respectively, the driving rod is fixedly connected to a driving gear, and the two transmission rods are fixedly connected to a transmission gear that meshes with the driving gear.

[0018] Preferably, a cleaning assembly is also included to prevent debris generated during grinding of boiler plates from falling onto the main body of the device. The cleaning assembly includes a vacuum cylinder fixedly connected to the upper end of the lifting plate, the internal sealing and sliding connection of the vacuum cylinder is connected to a piston plate, the ends of the two U-shaped rods away from the lifting rods are fixedly connected to the piston plate, an air inlet connected to the outside is provided on the rear side wall of the vacuum cylinder, exhaust pipes are fixedly connected to the two side walls of the vacuum cylinder, and the bottom ends of the two exhaust pipes are respectively facing the two grinding rollers.

[0019] Preferably, a first one-way valve is provided in the air inlet and the two exhaust pipes.

[0020] Preferably, it also includes an injection assembly for continuously injecting cutting fluid into the grinding position when the grinding roller rotates to perform grinding work, the injection assembly includes a transmission ring plate fixedly connected to the transmission rod, the upper end of the transmission ring plate is fixedly connected to a plurality of raised blocks distributed in a circumferential array, the side wall of the lifting plate is fixedly connected to an annular injection chamber through a connecting rod, the annular injection chamber is coaxially arranged with the transmission rod, and a plurality of injection holes distributed in a semicircular array are opened at the bottom of the annular injection chamber, the lower end of the lifting plate is fixedly connected to a liquid storage tank and a liquid pumping cylinder through a first support rod and a second support rod, the liquid storage tank and the liquid pumping cylinder are connected with an infusion tube, the liquid pumping cylinder and the annular injection chamber are connected with a discharge tube, the internal sealing and sliding connection of the liquid pumping cylinder is connected with a piston block, a first spring is provided between the piston block and the inner bottom wall of the liquid pumping cylinder, the upper end of the piston block is fixedly connected to an L-shaped rod, and the end of the L-shaped rod away from the piston block is fixedly connected to a push ball that periodically contacts with a plurality of raised blocks.

[0021] Preferably, a second one-way valve is provided in both the infusion tube and the drainage tube.

[0022] Preferably, it also includes an injection volume control component for adjusting the injection volume of the cutting fluid according to the rotation speed of the grinding roller, the injection volume control component includes an arc-shaped slide groove fixedly connected to the bottom end of the annular injection chamber, the arc-shaped slide groove is internally slidably connected with an arc-shaped stopper, the bottom end of the transmission rod extends through to the top of the lifting plate and is fixedly connected with a control block, a control cavity is provided inside the control block, a plurality of control grooves distributed in an array are provided on the inner wall of the control cavity, a plurality of control grooves are sealed and slidably connected with centrifugal blocks, each of the centrifugal blocks is provided with a second spring between the inner wall of the control groove, a connecting pipe is connected between the control cavity and the arc-shaped slide groove, a liquid storage space is formed between the control cavity, the space near one side of the plurality of control grooves and the interior of the arc-shaped slide groove, and the liquid storage space is filled with hydraulic oil.

[0023] Compared with the existing technology, the advantages of the refined processing device for boiler parts after processing and forming are:

[0024] 1. The present invention sets a positioning component. Before grinding, the plastic material in the positioning frame is heated by an electric heating wire, so that the plastic material is softened by the heat and can be deformed. Then, the boiler slices are placed in the positioning frame, and the plastic material is squeezed by the boiler slices to deform into a shape that fits the boiler slices. Finally, the plastic material is quickly cooled by the condensing coil to shape and harden the plastic material. The boiler slices are clamped and positioned while being in a state of being in contact with the boiler slices. The positioning work of boiler slices of different shapes and models is adapted, and the processing efficiency of the boiler slices is improved.

[0025] 2. The present invention sets a grinding component and an adjusting component. During the grinding process, the electric telescopic rod drives the lifting rod to perform reciprocating vertical displacement in the vertical direction, so that the two slides move toward and away from each other periodically along the resistance rod, so that the current in the circuit where the drive motor is located changes continuously, thereby changing the rotation speed of the grinding roller continuously. When the rotation speed of the grinding roller is faster, the contact frequency between the grinding roller and the workpiece surface is increased, so that more material is removed quickly. When the rotation speed of the grinding roller is slower, the generation of grinding heat is effectively reduced. Such reciprocating and periodic control of the rotation speed of the grinding roller can ensure the grinding efficiency while avoiding deformation or burning of the workpiece surface due to overheating, and at the same time increase the service life of the grinding roller.

[0026] 3. The present invention provides a cleaning component. During the grinding process, when the electric telescopic rod drives the lifting rod to perform reciprocating vertical displacement through the U-shaped rod, the other end of the U-shaped rod can drive the piston plate to perform reciprocating vertical displacement in the vacuum cylinder, thereby reciprocatingly discharging the outside air to the grinding roller, and blowing away the debris generated during grinding from above the device body, thereby preventing the debris from falling above the device body and causing inconvenience in subsequent cleaning work.

[0027] 4. The present invention arranges an injection assembly. During the grinding process, the rotation of the grinding roller will drive the transmission ring plate and the protrusion block to rotate, and then drive the piston block to reciprocate in the pumping cylinder through the friction between the multiple protrusion blocks and the push balls, so that the cutting fluid in the storage tank is continuously pumped out into the annular injection chamber, and further drips on the contact position between the grinding roller and the boiler slices, effectively reducing the friction heat between the grinding roller and the boiler slices, preventing the boiler slices from being overheated, thereby reducing the risk of thermal deformation and burning of the boiler slices.

[0028] 5. The present invention sets an injection amount control component. During the grinding process, due to the different rotation speeds of the grinding roller, the centrifugal force of the centrifugal block is different. The position of the arc block can be adjusted by the difference in centrifugal force, and the number of injection holes blocked can be adjusted, thereby adjusting the amount of cutting fluid injected, so that the injection amount of the cutting fluid is proportional to the rotation speed of the grinding roller, thereby avoiding that when the rotation speed of the grinding roller is at a low state, too much injection into the grinding roller leads to the formation of an excessively thick oil film, thereby reducing the lubrication effect and hindering grinding. At the same time, when the rotation speed of the grinding roller is at a high state, too little injection into the grinding roller leads to the accumulation of friction heat, resulting in excessively high temperatures of the workpiece and the mold, causing thermal damage and deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 It is a three-dimensional structural schematic diagram of the present invention from another angle;

[0031] Figure 3 It is a partial structural schematic diagram of the regulating component and the cleaning component in the present invention;

[0032] Figure 4 It is a schematic diagram of the local structure of the transmission rod in the present invention;

[0033] Figure 5 yes Figure 4 The enlarged view of point A in the middle;

[0034] Figure 6 yes Figure 4 The enlarged view of point B in the middle;

[0035] Figure 7 It is a schematic diagram of the structure of the annular injection chamber in the present invention when viewed from above.

[0036] In the figure: 1, device body; 2, positioning assembly; 21, positioning frame; 3, grinding assembly; 31, hydraulic cylinder; 32, lifting plate; 33, grinding roller; 34, driving motor; 35, driving rod; 36, transmission rod; 37, driving gear; 38, transmission gear; 4, adjustment assembly; 41, sliding rheostat; 411, support plate; 412, resistance rod; 413, slide; 42, driving component; 421, triangular guide plate; 422, lifting rod; 423, guide wheel; 424, U-shaped rod; 425, electric telescopic rod; 426, reset spring; 5, cleaning group Components; 51, vacuum cylinder; 52, piston plate; 53, air inlet; 54, exhaust pipe; 6, injection assembly; 61, transmission ring plate; 62, raised block; 63, annular injection chamber; 64, injection hole; 65, liquid storage tank; 66, liquid pump; 67, infusion tube; 68, discharge tube; 69, piston block; 610, first spring; 611, L-shaped rod; 612, push ball; 7, injection volume control assembly; 71, arc-shaped slide groove; 72, arc-shaped stopper; 73, control block; 74, control chamber; 75, control groove; 76, centrifugal block; 77, second spring; 78, connecting pipe. DETAILED DESCRIPTION

[0037] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0038] Example: Refer to Figures 1 to 7 , a device for fine processing of boiler parts after processing and forming, comprising:

[0039] Device body 1;

[0040] The positioning assembly 2 is used to clamp and fix the boiler slices of various models. The positioning assembly 2 includes a positioning frame 21 fixedly connected to the upper end of the device body 1. The interior of the positioning frame 21 is filled with plastic material. The inner wall of the positioning frame 21 is provided with a heating wire and a condensing coil for heating and cooling the plastic material.

[0041] In view of the problem that the prior art can only clamp and position boiler slices within a specified model range, and the clamping effect on boiler slices of other shapes or beyond the specified model range (i.e., too large or too small models) is poor, and the scope of application is very limited, the present invention provides a positioning component 2. Before grinding, the plastic material in the positioning frame 21 is heated by an electric heating wire so that the plastic material is softened by the heat and can be deformed. The boiler slices are then placed in the positioning frame 21, and the plastic material is squeezed by the boiler slices so that the plastic material is deformed into a shape that fits the boiler slices. Finally, the plastic material is quickly cooled by a condensing coil so that the plastic material is shaped and hardened, and the boiler slices are clamped and positioned while maintaining a state of fitting with the boiler slices. This can adapt to the positioning of boiler slices of different shapes and models, thereby improving the processing efficiency of boiler slices.

[0042] The grinding assembly 3 is used to grind the inner wall of the circular hole of the boiler slice. The grinding assembly 3 includes a hydraulic cylinder 31 fixedly connected to the upper end of the device body 1. A lifting plate 32 is fixedly connected to the output end of the hydraulic cylinder 31. Two grinding rollers 33 are symmetrically arranged below the lifting plate 32. A driving motor 34 for driving the two grinding rollers 33 to rotate is arranged at the upper end of the lifting plate 32.

[0043] Specifically, the grinding assembly 3 also includes a driving rod 35 and two transmission rods 36 fixedly connected to the lower end of the lifting plate 32. The driving rod 35 is fixedly connected to the output end of the driving motor 34. The two transmission rods 36 are coaxially fixedly connected to the two grinding rollers 33 respectively. A driving gear 37 is fixedly connected to the driving rod 35, and both transmission rods 36 are fixedly connected to transmission gears 38 that mesh with the driving gear 37.

[0044] The regulating component 4 is used to adjust the current of the circuit where the driving motor 34 is located so that the rotation speed of the two grinding rollers 33 changes continuously. The regulating component 4 includes a sliding rheostat 41 for controlling the rotation speed of the driving motor 34 and a driving component 42 for controlling the sliding rheostat.

[0045] Specifically, the sliding rheostat 41 includes two support plates 411 fixedly connected to the side walls of the lifting plate 32, a resistance rod 412 is fixedly connected between the two support plates 411, and two slides 413 are slidably connected to the resistance rod 412. The drive motor 34 is connected in series with the power supply device inside the lifting plate 32 through the resistance rod 412 and the slide 413.

[0046] Specifically, the driving component 42 includes a triangular guide plate 421 fixedly connected to the slide 413, a lifting rod 422 is provided above the two triangular guide plates 421, the bottom end of the lifting rod 422 is rotatably connected to a guide wheel 423 through a mounting seat, the two guide wheels 423 respectively contact and roll with the two triangular guide plates 421, the upper end of the lifting rod 422 is fixedly connected to a U-shaped rod 424, the upper end of the lifting plate 32 is fixedly connected to two electric telescopic rods 425 for driving the U-shaped rod 424 to move in the vertical direction, and a reset spring 426 is provided between the two slides 413.

[0047] In view of the fact that the rotation speed of the grinding roller 33 in the prior art is often constant, when the grinding roller 33 always maintains a faster rotation speed, it is easy to generate a large grinding heat, which not only easily causes the surface of the workpiece to deform or burn due to overheating, thereby reducing the yield rate of the boiler slices after treatment, but also causes the grinding roller 33 to soften under the influence of cutting heat, shortening the service life of the grinding roller 33. When the grinding roller 33 always maintains a slower rotation speed, the grinding efficiency will be greatly reduced. In the present invention, a grinding component 3 and an adjustment component 4 are provided. During the grinding process, the lifting rod 422 is driven by the electric telescopic rod 425 to perform reciprocating vertical displacement in the vertical direction, thereby continuously adjusting the rotation speed of the grinding roller 33. The specific adjustment process is as follows:

[0048] When the lifting rod 422 moves downward, the two triangular guide plates 421 are pushed away from each other by the two guide wheels 423, so that the two slides 413 move away from each other along the resistance rod 412, increasing the resistance of the circuit where the drive motor 34 is located, thereby reducing the current of the circuit where the drive motor 34 is located, reducing the power of the drive motor 34, and reducing the rotation speed of the two grinding rollers 33;

[0049] When the lifting rod 422 moves upward from bottom to top, the two triangular guide plates 421 move toward each other under the elastic force of the return spring 426, thereby reducing the resistance of the circuit where the drive motor 34 is located, thereby increasing the current of the circuit where the drive motor 34 is located, thereby increasing the power of the drive motor and improving the rotation speed of the two grinding rollers 33.

[0050] To sum up, the rotation speed of the grinding roller 33 can be continuously changed. When the rotation speed of the grinding roller 33 is faster, the contact frequency between the grinding roller 33 and the workpiece surface is increased, so as to quickly remove more material. When the rotation speed of the grinding roller 33 is slower, the generation of grinding heat is effectively reduced. Such reciprocating and periodic control of the rotation speed of the grinding roller 33 can ensure the grinding efficiency while avoiding deformation or burning of the workpiece surface due to overheating, and at the same time improve the service life of the grinding roller.

[0051] It also includes a cleaning component 5, which is used to prevent debris generated during boiler plate grinding from falling on the top of the device body 1. The cleaning component 5 includes a vacuum cylinder 51 fixedly connected to the upper end of the lifting plate 32. The internal sealing sliding connection of the vacuum cylinder 51 is connected to the piston plate 52. The ends of the two U-shaped rods 424 away from the lifting rod 422 are fixedly connected to the piston plate 52. An air inlet 53 connected to the outside is opened on the rear side wall of the vacuum cylinder 51. Exhaust pipes 54 are fixedly connected to the two side walls of the vacuum cylinder 51. The bottom ends of the two exhaust pipes 54 are respectively opposite to the two grinding rollers 33.

[0052] Specifically, a first one-way valve is provided in the air inlet 53 and the two exhaust pipes 54. Through the setting of the first one-way valve, when the piston plate 52 performs reciprocating vertical displacement in the vacuum cylinder 51, the outside air can only be drawn into the vacuum cylinder 51 through the air inlet 53, and the air in the vacuum cylinder 51 can only be discharged to the grinding position through the exhaust pipe 54, thereby ensuring the cleaning of debris during the grinding process and avoiding the reduction of the cleaning effect due to air backflow.

[0053] In order to prevent the debris generated during grinding from falling on the top of the device body 1, the present invention is provided with a cleaning component 5. During the grinding process, when the electric telescopic rod 425 drives the lifting rod 422 to perform reciprocating vertical displacement through the U-shaped rod 424, the other end of the U-shaped rod 424 can drive the piston plate 52 to perform reciprocating vertical displacement in the vacuum cylinder 51, thereby reciprocatingly drawing the outside air into the vacuum cylinder 51 through the air inlet 53, and at the same time, the air in the vacuum cylinder 51 is reciprocatingly discharged to the grinding roller 33 through the exhaust pipe 54, so that the debris generated during grinding is blown away from the top of the device body 1, so as to prevent the debris from falling on the top of the device body 1 and causing inconvenience in subsequent cleaning work. The cleaning component 5 and the adjustment component 4 share a driving source (i.e., the electric telescopic rod 425), which saves the driving source and achieves the purpose of energy saving and efficiency improvement.

[0054] The invention also includes an injection assembly 6, which is used to continuously inject cutting fluid into the grinding position when the grinding roller 33 rotates to perform grinding work. The injection assembly 6 includes a transmission ring plate 61 fixedly connected to the transmission rod 36, and the upper end of the transmission ring plate 61 is fixedly connected to a plurality of protrusions 62 distributed in a circumferential array. An annular injection chamber 63 is fixedly connected to the side wall of the lifting plate 32 through a connecting rod. The annular injection chamber 63 is coaxially arranged with the transmission rod 36, and a plurality of injection holes 64 distributed in a semicircular array are opened at the bottom of the annular injection chamber 63. The lower end of the lifting plate 32 is connected to the inner wall of the lifting plate 32 through the first protrusion 62. A main rod and a second main rod are fixedly connected with a liquid storage tank 65 and a liquid extraction cylinder 66, an infusion tube 67 is connected between the liquid storage tank 65 and the liquid extraction cylinder 66, a discharge tube 68 is connected between the liquid extraction cylinder 66 and the annular injection chamber 63, the internal sealing sliding connection of the liquid extraction cylinder 66 is connected with a piston block 69, a first spring 610 is provided between the piston block 69 and the inner bottom wall of the liquid extraction cylinder 66, the upper end of the piston block 69 is fixedly connected with an L-shaped rod 611, and the end of the L-shaped rod 611 away from the piston block 69 is fixedly connected with a push ball 612 that periodically contacts multiple protrusions 62.

[0055] Specifically, a second one-way valve is provided in both the infusion tube 67 and the discharge tube 68. The function of the second one-way valve is to enable the cutting fluid in the fluid storage tank 65 to be pumped into the suction tube 66 only through the infusion tube 67 when the piston block 69 moves back and forth in the suction cylinder 66, and the cutting fluid in the suction cylinder 66 can only be pumped out into the annular injection chamber 63 through the discharge tube 68.

[0056] In order to avoid generating large friction heat between the grinding roller 33 and the boiler row slices during the grinding process, the present invention sets an injection assembly 6. During the grinding process, the rotation of the grinding roller 33 will drive the transmission ring plate 61 and the protrusion block 62 to rotate, and then the push ball 612 is periodically pushed upward through the multiple protrusion blocks 62, so that the piston block 69 is periodically displaced upward in the pumping cylinder 66, and periodically displaced downward under the elastic force of the first spring 610. The reciprocating movement of the piston block 69 in the pumping cylinder 66 makes the cutting fluid in the liquid storage tank 65 continuously pumped into the pumping cylinder 66 through the infusion pipe 67, and the cutting fluid in the pumping cylinder 66 is continuously pumped out into the annular injection chamber 63 through the discharge pipe 68, and further drips on the contact position between the grinding roller 33 and the boiler row slices, effectively reducing the friction heat between the grinding roller 33 and the boiler row slices, preventing the boiler row slices from being overheated, and thus reducing the risk of thermal deformation and burning of the boiler row slices.

[0057] The injection volume control assembly 7 is also included, which is used to adjust the injection volume of the cutting fluid according to the rotation speed of the grinding roller 33. The injection volume control assembly 7 includes an arc-shaped slide groove 71 fixedly connected to the bottom end of the annular injection chamber 63, and an arc-shaped stopper 72 is slidably connected inside the arc-shaped slide groove 71. The bottom end of the transmission rod 36 extends through and extends to the top of the lifting plate 32 and is fixedly connected to a control block 73. A control cavity 74 is provided inside the control block 73, and a plurality of control grooves 75 distributed in an array are provided on the inner wall of the control cavity 74. Centrifugal blocks 76 are sealed and slidably connected in the plurality of control grooves 75, and each centrifugal block 76 is provided between the inner wall of the control groove 75. A connecting pipe 78 is connected between the control cavity 74 and the arc-shaped slide groove 71. A liquid storage space is formed between the control cavity 74, the space near one side of the plurality of control grooves 75, and the interior of the arc-shaped slide groove 71, and the liquid storage space is filled with hydraulic oil.

[0058] Specifically, the connecting tube 78 is sealed and rotatably connected to the upper end of the control block 73 to prevent the transmission rod 36 from causing the connecting tube 78 to twist when driving the control block 73 to rotate, resulting in blockage of the connecting tube 78 for the delivery of hydraulic oil in the control chamber 74.

[0059] In order to avoid excessive or insufficient cutting fluid injection, the present invention provides an injection amount control component 7. During the grinding process, due to the different rotation speeds of the grinding roller 33, the centrifugal force of the centrifugal block 76 is different. The difference in centrifugal force will have the following effects:

[0060] When the speed of the grinding roller 33 is faster, the centrifugal force is greater, and the centrifugal block 76 moves farther away from the control chamber 74 in the control groove 75, so that more hydraulic oil in the control chamber 74 enters the control groove 75, and further more hydraulic oil in the arc chute 71 enters the control chamber 74 through the connecting pipe 78. Due to the reduction of hydraulic oil in the arc chute 71, more of the arc block 72 shrinks back into the arc chute 71, so that the number of injection holes 64 blocked by the arc block 72 is reduced, so that more cutting fluid in the annular injection chamber 63 drips at the grinding position;

[0061] When the speed of the grinding roller 33 is slower, the centrifugal force is smaller, and the centrifugal block 76 moves farther toward the control chamber 74 in the control groove 75 under the elastic force of the second spring 77, so that the hydraulic oil in the control groove 75 enters the control chamber 74, and the hydraulic oil in the control chamber 74 enters the arc chute 71 through the connecting pipe 78. With the increase of the hydraulic oil in the arc chute 71, the arc stopper 72 extends out from the arc chute 71, and the number of the injection holes 64 blocked increases, so that the cutting fluid in the annular injection chamber 63 drips less at the grinding position.

[0062] In summary, the position of the arc stopper 72 can be adjusted by the difference in centrifugal force, and the number of injection holes 64 that are blocked can be adjusted, thereby adjusting the amount of cutting fluid injected, so that the amount of cutting fluid injected is proportional to the rotational speed of the grinding roller 33, so as to avoid the situation where too much cutting fluid is injected when the rotational speed of the grinding roller 33 is at a low state, resulting in the formation of an oil film that is too thick, thereby reducing the lubrication effect and hindering grinding. At the same time, it is avoided that when the rotational speed of the grinding roller 33 is at a high state, too little cutting fluid is injected, resulting in the accumulation of frictional heat, resulting in excessive temperatures of the workpiece and the mold, causing thermal damage and deformation.

[0063] The present invention can be explained by the following operation mode:

[0064] Before grinding, the plastic material in the positioning frame 21 is heated by an electric heating wire to soften the plastic material. Then, the boiler slices are placed in the positioning frame 21, and the plastic material is quickly cooled by the condensing coil to shape and harden the plastic material. This can adapt to the positioning work of boiler slices of different shapes and models.

[0065] During grinding, the hydraulic cylinder 31 drives the lifting plate 32 to move downward, and the grinding roller 33 is inserted into the two circular holes of the boiler slices. The driving motor 34 is turned on to drive the driving rod 35 and the driving gear 37 to rotate, and the two driving rods 36 are further driven to rotate through the transmission gear 38, so that the two grinding rollers 33 rotate to grind the inner wall of the circular hole of the boiler slices.

[0066] During the grinding process, the electric telescopic rod 425 is turned on to drive the lifting rod 422 to perform reciprocating vertical displacement in the vertical direction. During the displacement of the lifting rod 422 from top to bottom, the two slides 413 move away from each other along the resistance rod 412, increasing the resistance of the circuit where the drive motor 34 is located, thereby reducing the current of the circuit where the drive motor 34 is located, reducing the power of the drive motor 34, and reducing the rotation speed of the two grinding rollers 33. During the displacement of the lifting rod 422 from bottom to top, the resistance of the circuit where the drive motor 34 is located is reduced, thereby increasing the current of the circuit where the drive motor 34 is located, increasing the power of the drive motor, and increasing the rotation speed of the two grinding rollers 33, which can ensure the grinding efficiency while preventing the surface of the workpiece from being deformed or burned due to overheating;

[0067] When the electric telescopic rod 425 drives the lifting rod 422 to reciprocate vertically through the U-shaped rod 424, the other end of the U-shaped rod 424 can drive the piston plate 52 to reciprocate vertically in the vacuum cylinder 51, so as to discharge the outside air to the grinding roller 33 back and forth, and blow away the debris generated during grinding from above the device body 1, so as to prevent the debris from falling on the device body 1;

[0068] When the transmission rod 36 rotates, the transmission ring plate 61 and the protruding block 62 are driven to rotate, and then the push ball 612 is periodically pushed upwards through the multiple protruding blocks 62, so that the piston block 69 is periodically displaced upwards in the pumping cylinder 66, and periodically displaced downwards under the elastic force of the first spring 610. Through the reciprocating movement of the piston block 69 in the pumping cylinder 66, the cutting fluid in the liquid storage tank 65 is continuously pumped out into the annular injection chamber 63, and further dripped onto the contact position between the grinding roller 33 and the boiler row sheet;

[0069] During the grinding process, due to the different rotation speeds of the grinding roller 33, the centrifugal force of the centrifugal block 76 is different. By adjusting the difference in centrifugal force, the position of the arc block 72 is adjusted, and the amount of the injection hole 64 that is blocked is adjusted. When the rotation speed of the grinding roller 33 is faster, more cutting fluid in the annular injection chamber 63 drips at the grinding position. When the rotation speed of the grinding roller 33 is slower, less cutting fluid in the annular injection chamber 63 drips at the grinding position, so that the injection amount of the cutting fluid is proportional to the rotation speed of the grinding roller 33.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for fine processing of boiler parts after processing and forming, It is characterized in that include: Device body(1); A positioning assembly (2) is used to clamp and fix boiler slices of various models, the positioning assembly (2) comprising a positioning frame (21) fixedly connected to the upper end of the device body (1), the interior of the positioning frame (21) is filled with plastic material, and the inner wall of the positioning frame (21) is provided with a heating wire and a condensing coil for heating and cooling the plastic material; A grinding assembly (3) is used to grind the inner wall of the circular hole of the boiler plate, the grinding assembly (3) comprising a hydraulic cylinder (31) fixedly connected to the upper end of the device body (1), a lifting plate (32) fixedly connected to the output end of the hydraulic cylinder (31), two grinding rollers (33) are symmetrically arranged below the lifting plate (32), and a driving motor (34) for driving the two grinding rollers (33) to rotate is arranged at the upper end of the lifting plate (32); The regulating component (4) is used to adjust the current of the circuit where the driving motor (34) is located so that the rotation speed of the two grinding rollers (33) changes continuously. The regulating component (4) comprises a sliding rheostat (41) for controlling the rotation speed of the driving motor (34) and a driving component (42) for controlling the sliding rheostat (41).

2. The device for finely processing boiler parts after processing and forming according to claim 1, It is characterized in that The sliding rheostat (41) comprises two support plates (411) fixedly connected to the side wall of the lifting plate (32), a resistance rod (412) fixedly connected between the two support plates (411), two sliding plates (413) slidably connected to the resistance rod (412), and the driving motor (34) is connected in series with a power supply device inside the lifting plate (32) via the resistance rod (412) and the sliding plate (413).

3. The device for finely processing boiler parts after processing and forming according to claim 2, It is characterized in that The driving component (42) comprises a triangular guide plate (421) fixedly connected to the slide (413); a lifting rod (422) is arranged above the two triangular guide plates (421); the bottom end of the lifting rod (422) is rotatably connected to a guide wheel (423) through a mounting seat; the two guide wheels (423) respectively contact and roll with the two triangular guide plates (421); the upper end of the lifting rod (422) is fixedly connected to a U-shaped rod (424); the upper end of the lifting plate (32) is fixedly connected to two electric telescopic rods (425) for driving the U-shaped rod (424) to move in a vertical direction; and a return spring (426) is arranged between the two slides (413).

4. The device for finely processing boiler parts after processing and forming according to claim 1, It is characterized in that The grinding assembly (3) further comprises a driving rod (35) and two transmission rods (36) fixedly connected to the lower end of the lifting plate (32); the driving rod (35) is fixedly connected to the output end of the driving motor (34); the two transmission rods (36) are respectively coaxially fixedly connected to the two grinding rollers (33); the driving rod (35) is fixedly connected to a driving gear (37); and the two transmission rods (36) are both fixedly connected to a transmission gear (38) meshing with the driving gear (37).

5. The device for finely processing boiler parts after processing and forming according to claim 3, It is characterized in that It also includes a cleaning assembly (5) for preventing debris generated during boiler plate grinding from falling onto the top of the device body (1). The cleaning assembly (5) includes a vacuum cylinder (51) fixedly connected to the upper end of the lifting plate (32). The interior of the vacuum cylinder (51) is sealingly and slidably connected to a piston plate (52). One end of the two U-shaped rods (424) away from the lifting rods (422) is fixedly connected to the piston plate (52). An air inlet (53) connected to the outside is provided on the rear side wall of the vacuum cylinder (51). Exhaust pipes (54) are fixedly connected to the two side walls of the vacuum cylinder (51). The bottom ends of the two exhaust pipes (54) are respectively opposite to the two grinding rollers (33).

6. The device for finely processing boiler parts after processing and forming according to claim 5, It is characterized in that The air inlet (53) and the two exhaust pipes (54) are each provided with a first one-way valve.

7. The device for finely processing boiler parts after processing and forming according to claim 4, It is characterized in that The invention also comprises an injection assembly (6) for continuously injecting cutting fluid into the grinding position when the grinding roller (33) rotates to perform grinding work. The injection assembly (6) comprises a transmission ring plate (61) fixedly connected to the transmission rod (36). The upper end of the transmission ring plate (61) is fixedly connected to a plurality of protrusions (62) distributed in a circumferential array. An annular injection chamber (63) is fixedly connected to the side wall of the lifting plate (32) via a connecting rod. The annular injection chamber (63) is coaxially arranged with the transmission rod (36). A plurality of injection holes (64) distributed in a semicircular array are opened at the bottom of the annular injection chamber (63). The lower end of the lifting plate (32) is connected to the first support rod and the second support rod. The two support rods are fixedly connected with a liquid storage box (65) and a liquid extraction cylinder (66); a liquid infusion tube (67) is connected between the liquid storage box (65) and the liquid extraction cylinder (66); a liquid discharge tube (68) is connected between the liquid extraction cylinder (66) and the annular injection chamber (63); a piston block (69) is sealingly and slidably connected inside the liquid extraction cylinder (66); a first spring (610) is provided between the piston block (69) and the inner bottom wall of the liquid extraction cylinder (66); an L-shaped rod (611) is fixedly connected to the upper end of the piston block (69); and a push ball (612) that periodically contacts a plurality of protrusions (62) is fixedly connected to the end of the L-shaped rod (611) away from the piston block (69).

8. The device for finely processing boiler parts after processing and forming according to claim 7, It is characterized in that A second one-way valve is provided in both the liquid infusion tube (67) and the liquid discharge tube (68).

9. The device for finely processing boiler parts after processing and forming according to claim 7, It is characterized in that The invention also comprises an injection volume control component (7) for adjusting the injection volume of the cutting fluid according to the rotation speed of the grinding roller (33), wherein the injection volume control component (7) comprises an arc-shaped slide groove (71) fixedly connected to the bottom end of the annular injection chamber (63), wherein an arc-shaped stopper (72) is slidably connected inside the arc-shaped slide groove (71), wherein the bottom end of the transmission rod (36) extends through and extends to the top of the lifting plate (32) and is fixedly connected to a control block (73), wherein a control cavity (74) is provided inside the control block (73), and an inner wall of the control cavity (74) is provided with a control cavity (74). A plurality of control grooves (75) are provided which are distributed in an array. Centrifugal blocks (76) are sealed and slidably connected in the plurality of control grooves (75). A second spring (77) is provided between each of the centrifugal blocks (76) and the inner wall of the control groove (75). A connecting pipe (78) is connected between the control cavity (74) and the arc-shaped slide groove (71). A liquid storage space is formed between the control cavity (74), the space near one side of the plurality of control grooves (75) close to the control cavity (74), and the interior of the arc-shaped slide groove (71), and the liquid storage space is filled with hydraulic oil.

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