Device and method for removing aluminum-oxide-containing core rod of hollow blade

Abstract

The invention relates to the technical field of hollow blade core rod treatment, in particular to a device and method for removing a hollow blade aluminum oxide-containing core rod, and the device comprises a reaction kettle, a kettle cover, a driving motor arranged on the kettle cover, a rotating rod arranged on the driving motor, and a plurality of bearing seats; the mounting mechanism is arranged on the kettle cover; a plurality of moving seats; the reciprocating mechanism is arranged on the mounting mechanism; the switching mechanism is arranged on the mounting mechanism; different from the prior art, when a worker uses the device and the method, the mounting mechanism is used for mounting and fixing the hollow blade on the bearing seat, the switching mechanism is used for controlling the mounting mechanism to drive the hollow blade to rotate, the reaction rate is increased, and the reciprocating mechanism is controlled to drive the moving seat to move; the hollow blade is knocked and vibrated, so that the reacted part is stressed and separated, the chemical reaction rate is increased, the removal efficiency of the ceramic core and the aluminum oxide core rod is improved, and the production efficiency and the core removal quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of hollow blade core rod processing, in particular to a device and a method for removing a hollow blade core rod containing aluminum oxide. Background Art

[0002] Hollow blades are turbine blades with internal cavities made for the purposes of cooling, stress reduction, frequency modulation and processing technology. They are widely used in high-temperature, high-pressure and high-speed equipment such as aircraft engines and gas turbines. Modern casting technology often forms cavity air-cooling channels in the blades through prefabricated ceramic cores so that gas can flow in complex cavities to cool the blades under high-temperature and high-intensity load working conditions. In the casting production process, the ceramic core needs to withstand long-term immersion in high-temperature molten alloys and withstand certain pressures during the cooling and shrinkage of the alloy. This process places increasingly higher requirements on the strength and high-temperature resistance of the ceramic core. In the past, ceramic core materials were mainly based on silica, and their strength and high-temperature resistance gradually failed to meet the needs of actual production. Therefore, alumina core rods with appropriate diameters are added to traditional silica ceramic cores as a solution to increase the strength of the ceramic cores.

[0003] After the hollow blade casting is completed, the ceramic core and the alumina core rod need to be de-cored. The traditional chemical de-coring method is to immerse the blade in a potassium hydroxide solution in a medium-temperature and low-pressure reactor. The silicon-based component and potassium hydroxide react chemically to dissolve the ceramic core and the alumina core rod. Since the hollow blade cavity of a heavy-duty gas turbine is large and complex, but its internal channel is small, it takes a long time to dissolve the alumina core rod by simply using the chemical immersion method. The heavy-duty gas turbine blade is mainly a nickel-based high-temperature alloy. The potassium hydroxide solution will corrode the blade. Long-term corrosion will cause intergranular corrosion of the blade and even scrap it. For this reason, we propose a device and method for removing the alumina core rod from a hollow blade. Summary of the invention

[0004] A technical problem to be solved by the present application is: how to enhance the chemical reaction rate and improve the removal efficiency of the ceramic core and the alumina core rod during the hollow blade de-coring process, thereby improving the efficiency of the mass production of hollow blades and the de-coring quality.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a device for removing alumina core rods from hollow blades, comprising a reactor, a reactor cover is provided on the reactor, a driving motor is provided above the reactor cover, a rotating rod is provided on the driving motor, and further comprising: A bearing seat, wherein a plurality of bearing seats are provided, and the plurality of bearing seats are all provided below the rotating rod; A mounting mechanism, used for mounting and fixing the hollow blades on the plurality of bearing seats, and arranged on the kettle cover; A movable seat, wherein a plurality of movable seats are provided, and the plurality of movable seats are respectively arranged on one side of a plurality of bearing seats; A reciprocating mechanism, used to drive the plurality of movable seats to move back and forth to knock and vibrate the plurality of hollow blades, and arranged on the mounting mechanism; The switching mechanism is used to switch the output state of the rotating rod, respectively control the mounting mechanism to drive the hollow blade to rotate, and control the operation of the reciprocating mechanism, and is arranged on the mounting mechanism.

[0006] In some embodiments, the mounting mechanism comprises a fixed plate arranged on the kettle cover, a fitting ring is arranged below the fixed plate, a connecting ring is arranged on the fitting ring, the fitting ring is rotatably connected to the fixed plate through the connecting ring, and a plurality of vertical rods are arranged on the fitting ring; A loading assembly is arranged below the plurality of vertical poles for receiving and supporting the hollow blades.

[0007] In some embodiments, the loading assembly includes a receiving plate arranged below a plurality of uprights, a plurality of the bearing seats are arranged on the receiving plate, a turntable is rotatably arranged on the receiving plate, a plurality of connecting plates are arranged on the turntable, a plurality of connecting plates are arranged at one end thereof, and a torsion spring is arranged at a rotationally connected portion between the turntable and the receiving plate; The receiving plate is provided with a limiting member for limiting the positions of the plurality of the push seats.

[0008] In some embodiments, the limiting member includes a protrusion arranged on the receiving plate, a protrusion is provided on the protrusion, a screw rod is threadedly connected to the protrusion plate, a protrusion is provided at one end of the screw rod, a push plate is provided at the other end of the screw rod, a handle is provided on the protrusion, a bolt is threadedly connected to the protrusion, and the bolt is threadedly connected to the protrusion plate.

[0009] In some embodiments, the reciprocating mechanism comprises a moving ring slidably arranged on a plurality of uprights, a plurality of connecting tubes are arranged on the moving ring, a plurality of the moving seats are each provided with a connecting column, and a connecting spring is arranged between the plurality of the connecting columns and the connecting tubes; The moving ring is provided with a moving assembly for driving the moving ring and a plurality of moving seats to move back and forth.

[0010] In some embodiments, the moving component includes a moving plate arranged on a moving ring, a reciprocating ring seat is arranged on the moving plate, an arc bar is arranged between the two vertical rods, the moving plate is slidably connected to the arc bar, a fixed plate is arranged on the arc bar, an output shaft is rotatably arranged on the fixed plate, a rotating plate is arranged on the output shaft, and a deflection column matching the reciprocating ring seat is arranged on the rotating plate.

[0011] In some embodiments, the switching mechanism includes a slide cylinder slidably arranged on a rotating rod, a slide seat is arranged at both upper and lower ends of the slide cylinder, a plurality of deflection wedges are arranged on the two slide seats, two cross plates are arranged on the plurality of vertical rods, a cross plate is arranged between the corresponding plurality of cross plates, a connecting rod is arranged on the rotating plate, a convex seat is arranged at the top of the connecting rod, a plurality of first driven wedges are arranged in the convex seat, a coaxial gear is rotatably arranged on the rotating rod, a notch is arranged on the coaxial gear, and a plurality of second driven wedges are arranged in the notch; The fixed plate is provided with a displacement assembly for driving the sliding seat to shift; A transmission assembly is arranged on one of the transverse plates for driving the output shaft to rotate.

[0012] In some embodiments, the displacement assembly includes a push rod disposed on a fixed plate, the push rod is provided with an arc plate, and the arc plate is in contact with the slide seat.

[0013] In some embodiments, the transmission assembly includes a connecting plate arranged on a horizontal plate, a vertical shaft is rotatably arranged on the connecting plate, a transmission gear is arranged on the vertical shaft, the transmission gear is meshed with a coaxial gear, a first bevel gear is arranged on the vertical shaft, a second bevel gear is arranged on the output shaft, and the second bevel gear is meshed with the first bevel gear.

[0014] A method for removing alumina core rods from hollow blades, applied to the above-mentioned device for removing alumina core rods from hollow blades, comprises the following steps: Step 1: Installing the hollow blade: placing the hollow blade in the bearing seat, and using the limiting member to install and limit the position of the hollow blade; Step 2: One-time chemical de-coring: Place the hollow blades in a kettle containing potassium hydroxide solution at medium temperature and low pressure: the solution concentration is 35%-45%, the solution temperature is 170℃-19℃, the pressure in the kettle is 2bar-10bar, and after the reaction time is 10h-30h, take out the blades and rinse them with a 5bar pressure water gun for 5min; Step 3: Secondary chemical de-coring: Place the blades that have undergone the primary chemical de-coring in a kettle containing potassium hydroxide solution at medium temperature and medium pressure: the solution concentration is 35%-45%, the solution temperature is 190℃-250℃, and the pressure in the kettle is 2bar-40bar. After the reaction time is 10h-30h, take out the blades and rinse them with a 5bar pressure water gun for 5min; Step 4: Three-time chemical de-coring: Place the blades that have undergone the second chemical de-coring in a kettle containing sodium hydroxide solution at medium temperature and medium pressure: the solution concentration is 35%-45%, the solution temperature is 190℃-250℃, and the pressure in the kettle is 2bar-40bar. After the reaction time is 10h-30h, take out the blades and rinse them with a 5bar pressure water gun for 5min; during the reaction in the kettle, the switching mechanism controls the mounting mechanism to drive the hollow blades to rotate; the switching mechanism controls the operation of the reciprocating mechanism, driving the multiple moving seats to move back and forth, and knocking and shaking the multiple hollow blades; Step 5: Citric acid neutralization: Place the leaves that have been de-cored three times in pneumatically stirred dilute citric acid for neutralization for 10 minutes; Step 6: Cleaning and drying: Place the leaves neutralized with citric acid in pneumatically stirred clean water for 5 minutes.

[0015] The present invention has at least the following beneficial effects: Different from the prior art, when the staff uses the hollow blade containing alumina core rod removal device and method, they use the installation mechanism to install and fix the hollow blades on multiple bearing seats, use the switching mechanism to switch the output state of the rotating rod, control the installation mechanism to drive the hollow blades to rotate and accelerate the reaction rate, control the reciprocating mechanism to drive multiple moving seats to move back and forth, and knock and vibrate multiple hollow blades so that the reacted parts are forced to separate. In the process of hollow blade core removal, the chemical reaction rate is enhanced, the removal efficiency of ceramic cores and alumina core rods is improved, and the efficiency of mass production of hollow blades and the core removal quality are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the local cross-section structure; Figure 3 For the present invention Figure 2 Schematic diagram of the local cross-section structure; Figure 4 It is a schematic diagram of the structure of the installation mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the bearing seat, the receiving plate and the limiting member of the present invention; Figure 6It is a schematic diagram of the structure of the connecting rod, rotating disk, connecting plate, thrust seat and torsion spring of the present invention; Figure 7 It is a schematic diagram of the structure of the limiting member of the present invention; Figure 8 It is a schematic diagram of the structure of the reciprocating mechanism of the present invention; Fig. 9 This is a schematic diagram of the structure of the mobile assembly of the present invention; Fig.10 It is a schematic diagram of the structure of the switching mechanism of the present invention; Fig.11 It is a schematic diagram of the structure of the slide cylinder, slide seat, deflection wedge block and displacement assembly of the present invention; Fig.12 It is a schematic diagram of the structure of the connecting rod, the convex seat and the first driven wedge block of the present invention; Fig.13 It is a schematic diagram of the structure of the transmission assembly of the present invention; Fig.14 It is a schematic diagram of the coaxial gear, notch and second driven wedge structure of the present invention.

[0017] In the figure: 1, reactor; 2, reactor cover; 3, driving motor; 4, rotating rod; 5, bearing seat; 6, mounting mechanism; 61, fixed plate; 62, fitting ring; 63, connecting ring; 64, vertical rod; 7, moving seat; 8, reciprocating mechanism; 81, moving ring; 82, connecting cylinder; 83, connecting column; 84, connecting spring; 9, switching mechanism; 91, sliding cylinder; 92, sliding seat; 93, deflection wedge; 94, horizontal plate; 95, horizontal plate; 96, connecting rod; 97, convex seat; 98, first driven wedge; 99, coaxial gear; 910, notch; 911, second driven wedge; 10, loading assembly; 101, loading plate; 102, rotating plate ; 103, connecting plate; 104, push seat; 105, torsion spring; 11, limiting member; 111, convex block; 112, convex plate; 113, spiral rod; 114, convex disk; 115, push plate; 116, handle; 117, bolt; 12, moving assembly; 121, moving plate; 122, reciprocating ring seat; 123, arc strip; 124, fixed plate; 125, output shaft; 126, rotating plate; 127, deflection column; 13, shifting assembly; 131, push rod; 132, arc plate; 14, transmission assembly; 141, connecting plate; 142, vertical shaft; 143, transmission gear; 144, first bevel gear; 145, second bevel gear. DETAILED DESCRIPTION

[0018] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 2 , the present invention provides a technical solution: A device for removing alumina core rods from hollow blades includes a reactor 1, a reactor cover 2 is provided on the reactor 1, a driving motor 3 is provided above the reactor cover 2, a rotating rod 4 is provided on the driving motor 3, and components such as a liquid inlet pipe, a liquid outlet pipe, a thermometer, and a pressure gauge are provided on the reactor 1 for entering and exiting a solution, detecting the temperature and pressure of the reactor 1, etc. The driving motor 3 is started to drive the rotating rod 4 to rotate, and the driving motor 3 is externally connected to a moving frame component, and the moving frame component controls the lifting and movement of the driving motor 3, thereby controlling the opening and closing of the reactor cover 2. The specific control and use of the reactor 1, the principle and step method of the chemical reaction are not repeated here, and also include: A bearing seat 5, wherein a plurality of bearing seats 5 are provided, and the plurality of bearing seats 5 are all provided below the rotating rod 4; The mounting mechanism 6 is used to mount and fix the hollow blades on the multiple bearing seats 5 and is arranged on the kettle cover 2; A movable seat 7, wherein a plurality of movable seats 7 are provided, and the plurality of movable seats 7 are respectively arranged on one side of the plurality of bearing seats 5; The reciprocating mechanism 8 is used to drive the multiple moving seats 7 to move back and forth to knock and vibrate the multiple hollow blades, and is arranged on the mounting mechanism 6; The switching mechanism 9 is used to switch the output state of the rotating rod 4, respectively control the mounting mechanism 6 to drive the hollow blade to rotate, and control the reciprocating mechanism 8 to operate, and is arranged on the mounting mechanism 6.

[0020] See also Figure 3 The mounting mechanism 6 includes a fixed plate 61 arranged on the kettle cover 2, a fitting ring 62 is arranged below the fixed plate 61, a connecting ring 63 is arranged on the fitting ring 62, the fitting ring 62 is rotatably connected to the fixed plate 61 through the connecting ring 63, and a plurality of vertical rods 64 are arranged on the fitting ring 62.

[0021] See also Figure 3-Figure 6A loading assembly 10 is arranged below the plurality of vertical rods 64 for supporting the hollow blades; the loading assembly 10 includes a receiving tray 101 arranged below the plurality of vertical rods 64, a plurality of bearing seats 5 are arranged on the receiving tray 101, a turntable 102 is rotatably arranged on the receiving tray 101, a plurality of connecting plates 103 are arranged on the turntable 102, a plurality of connecting plates 103 are arranged at one end of each of the plurality of connecting plates 103, a torsion spring 105 is arranged at a rotationally connected portion between the turntable 102 and the receiving tray 101; the bearing seat 5 fits the shape of the hollow blade; the hollow blade is placed on the bearing seat 5, and the bearing seat 5 supports the blade; the push seat 104 fits the shape of the hollow blade, and the push seat 104 clamps and fixes the blade; the torsion spring 105 limits the initial position of the turntable 102, the plurality of connecting plates 103, and the plurality of push seats 104.

[0022] See also Figure 7 , a limiting member 11 is provided on the receiving plate 101, which is used to limit the position of the plurality of push seats 104; the limiting member 11 includes a convex block 111 provided on the receiving plate 101, a convex plate 112 is provided on the convex block 111, a screw rod 113 is threadedly connected to the convex plate 112, a convex plate 114 is provided at one end of the screw rod 113, a push plate 115 is provided at the other end of the screw rod 113, a handle 116 is provided on the convex plate 114, a bolt 117 is threadedly connected to the convex plate 112; using the handle 11 6 The convex disc 114 is rotated to drive the spiral rod 113 and the push plate 115 to rotate, and the push plate 115 pushes the push seat 104 to deviate, and the push seat 104 clamps and fixes the blades; after the convex disc 114 is rotated, the bolt 117 can be spirally connected with the convex plate 112, and cooperate with the spiral rod 113 to limit the convex disc 114 at two points to prevent the blades from being dislocated and detached due to the reaction force of the solution during the rotation process; the surface layer of the spiral rod 113, bolt 117 and other structures can be coated with anti-corrosion coating to prevent the structure from being corroded by the solution.

[0023] See also Figure 8 The reciprocating mechanism 8 includes a moving ring 81 slidably arranged on a plurality of vertical rods 64, a plurality of connecting tubes 82 are arranged on the moving ring 81, a plurality of moving seats 7 are each provided with a connecting column 83, and a connecting spring 84 is arranged between the plurality of connecting columns 83 and the connecting tube 82; the moving ring 81 drives the plurality of connecting columns 83 and the moving seat 7 to move, and when the moving seat 7 moves to the bottom, it knocks and vibrates the blade, and the reacted parts of the ceramic core and the alumina core rod in the blade are forced to separate, and the unreacted parts are more likely to contact with the solution, further accelerating the overall reaction rate; the connecting spring 84 connects the connecting column 83 and the connecting tube 82 to provide a moving offset space for the moving seat 7; a sealing layer can be arranged between the connecting column 83 and the connecting tube 82 and other components to prevent the solution from invading and dissolving.

[0024] See also Fig. 9 A moving assembly 12 is provided on the moving ring 81, which is used to drive the moving ring 81 and multiple moving seats 7 to move back and forth; the moving assembly 12 includes a moving plate 121 arranged on the moving ring 81, a reciprocating ring seat 122 is arranged on the moving plate 121, an arc strip 123 is arranged between the two vertical rods 64, the moving plate 121 is slidably connected with the arc strip 123, a fixed plate 124 is arranged on the arc strip 123, an output shaft 125 is rotatably provided on the fixed plate 124, a rotating plate 126 is arranged on the output shaft 125, and a deflection column 127 matching the reciprocating ring seat 122 is arranged on the rotating plate 126; the output shaft 125 rotates to drive the rotating plate 126 and the deflection column 127 to deflect, and the deflection column 127 drives the reciprocating ring seat 122, the moving plate 121, and the moving ring 81 to move back and forth.

[0025] See also Figure 10-Figure 14 The switching mechanism 9 includes a slide cylinder 91 slidably arranged on the rotating rod 4, a slide seat 92 is arranged at both ends of the slide cylinder 91, a plurality of deflection wedges 93 are arranged on the two slide seats 92, two cross plates 94 are arranged on the plurality of vertical rods 64, a cross plate 95 is arranged between the corresponding plurality of cross plates 94, a connecting rod 96 is arranged on the rotating disk 102, a convex seat 97 is arranged at the top of the connecting rod 96, a plurality of first driven wedges 98 are arranged in the convex seat 97, a coaxial gear 99 is rotatably arranged on the rotating rod 4, and a coaxial gear 99 is arranged on the coaxial gear 99 A slot 910 is provided, and a plurality of second driven wedges 911 are arranged in the slot 910; the rotating rod 4 rotates, driving the slide 91, the slide seat 92, and the deflection wedge 93 to rotate; the convex seat 97 rotates, driving the connecting rod 96 and the turntable 102 to rotate, and then driving the blades to rotate. The blades stir the solution during the rotation process to accelerate the reaction rate; in the initial position, the deflection wedge 93 does not contact the first driven wedge 98 and the second driven wedge 911. At this time, the rotation of the deflection wedge 93 will not drive the convex seat 97 and the coaxial gear 99 to rotate.

[0026] See also Fig.11 A shift assembly 13 is provided on the fixed plate 61 for driving the slide 92 to move; the shift assembly 13 includes a push rod 131 provided on the fixed plate 61, and an arc plate 132 is provided on the push rod 131, and the arc plate 132 is in contact with the slide 92; the slide 92 rotates, which will not drive the arc plate 132 to rotate synchronously; the push rod 131 is started, driving the arc plate 132 to move, and the arc plate 132 drives the slide 91, the slide 92, and the deflection wedge block 93 to move, so that the deflection wedge block 93 contacts the first driven wedge block 98 or the second driven wedge block 911 after displacement.

[0027] See also Fig.13A transmission assembly 14 is provided on a horizontal plate 95 for driving the output shaft 125 to rotate; the transmission assembly 14 includes a connecting plate 141 provided on the horizontal plate 95, a vertical shaft 142 is rotatably provided on the connecting plate 141, a transmission gear 143 is provided on the vertical shaft 142, the transmission gear 143 is meshed with the coaxial gear 99, a first bevel gear 144 is provided on the vertical shaft 142, a second bevel gear 145 is provided on the output shaft 125, and the second bevel gear 145 is meshed with the first bevel gear 144; the second driven wedge block 911 rotates, driving the coaxial gear 99, the transmission gear 143, and the first bevel gear 144 to rotate, and the first bevel gear 144 drives the second bevel gear 145 and the output shaft 125 to rotate; a protective shell can be provided on the outside of the coaxial gear 99, the transmission gear 143, the first bevel gear 144 and other components to avoid erosion by the solution.

[0028] When in use, the reactor 1 controls the inflow and outflow of the solution as well as the temperature of the solution and the pressure in the reactor. To save time, the solution can be preheated before entering the reactor 1 to reduce the time for heating the solution.

[0029] When the hollow blade needs to be installed, the hollow blade is placed on the supporting seat 5, and the supporting seat 5 supports the blade. The handle 116 is used to rotate the convex plate 114, which drives the spiral rod 113 and the push plate 115 to rotate. The push plate 115 pushes the push seat 104 to deflect, and the push seat 104 clamps and fixes the blade. Then, the bolt 117 is spirally connected to the convex plate 112 and cooperates with the spiral rod 113 to limit the convex plate 114 at two points to prevent the blade from being dislocated and detached due to the reaction force of the solution during rotation.

[0030] The rotating rod 4 rotates, driving the slide 91, the slide seat 92, and the deflection wedge block 93 to rotate; the push rod 131 is started, driving the arc plate 132 to move, and the arc plate 132 drives the slide 91, the slide seat 92, and the deflection wedge block 93 to move, so that the deflection wedge block 93 contacts the first driven wedge block 98 or the second driven wedge block 911 after displacement.

[0031] When the deflection wedge 93 contacts the first driven wedge 98, it drives the first driven wedge 98 and the boss 97 to rotate, and the boss 97 drives the connecting rod 96 and the rotating disk 102 to rotate, thereby driving the blades to rotate. The blades stir the solution during the rotation process to accelerate the reaction rate.

[0032] When the deflection wedge 93 contacts the second driven wedge 911, it drives the second driven wedge 911, the coaxial gear 99, the transmission gear 143, and the first bevel gear 144 to rotate. The first bevel gear 144 drives the second bevel gear 145 and the output shaft 125 to rotate. The output shaft 125 drives the rotating plate 126 and the deflection column 127 to deflect. The deflection column 127 drives the reciprocating ring seat 122, the moving plate 121, and the moving ring 81 to move back and forth. The moving ring 81 drives multiple connecting columns 83 and the moving seat 7 to move. When the moving seat 7 moves to the bottom, it knocks and vibrates the blade, and the reacted parts of the ceramic core and the alumina core rod in the blade are forced to separate, and the unreacted parts are more easily in contact with the solution, further accelerating the overall reaction rate.

[0033] A method for removing alumina core rods from hollow blades, using the above-mentioned device for removing alumina core rods from hollow blades, the specific principle is described above, and will not be elaborated in detail below, comprising the following steps: Step 1: Install the hollow blade: place the hollow blade in the bearing seat 5, and use the limiting member 11 to install and limit the position of the hollow blade; Step 2: One-time chemical de-coring: Place the hollow blades in a kettle containing potassium hydroxide solution at medium temperature and low pressure: the solution concentration is 35%-45%, the solution temperature is 170℃-19℃, the pressure in the kettle is 2bar-10bar, and after the reaction time is 10h-30h, take out the blades and rinse them with a 5bar pressure water gun for 5min; Step 3: Secondary chemical de-coring: Place the blades that have undergone the primary chemical de-coring in a kettle containing potassium hydroxide solution at medium temperature and medium pressure: the solution concentration is 35%-45%, the solution temperature is 190℃-250℃, and the pressure in the kettle is 2bar-40bar. After the reaction time is 10h-30h, take out the blades and rinse them with a 5bar pressure water gun for 5min; Step 4: Three-time chemical de-coring: Place the blades that have undergone the second chemical de-coring in a kettle containing sodium hydroxide solution at medium temperature and medium pressure: the solution concentration is 35%-45%, the solution temperature is 190℃-250℃, and the pressure in the kettle is 2bar-40bar. After the reaction time is 10h-30h, take out the blades and rinse them with a 5bar pressure water gun for 5min; during the reaction in the kettle, the switching mechanism 9 controls the mounting mechanism 6 to drive the hollow blades to rotate; the switching mechanism 9 controls the reciprocating mechanism 8 to operate, driving the multiple moving seats 7 to move back and forth, and knocking and shaking the multiple hollow blades; Step 5: Citric acid neutralization: Place the leaves that have been de-cored three times in pneumatically stirred dilute citric acid for neutralization for 10 minutes; Step 6: Cleaning and drying: Place the leaves neutralized with citric acid in pneumatically stirred clean water for 5 minutes.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for removing alumina core rods from hollow blades, comprising a reaction kettle (1), the reaction kettle (1) being provided with a kettle cover (2), a driving motor (3) being provided above the kettle cover (2), and a rotating rod (4) being provided on the driving motor (3), characterized in that: Also included are: A bearing seat (5), wherein a plurality of bearing seats (5) are provided, and the plurality of bearing seats (5) are all provided below the rotating rod (4); The mounting mechanism (6) is used for mounting and fixing the hollow blades on the plurality of bearing seats (5), and is arranged on the kettle cover (2); the mounting mechanism (6) comprises a fixing plate (61) arranged on the kettle cover (2); a fitting ring (62) is arranged below the fixing plate (61); a connecting ring (63) is arranged on the fitting ring (62); the fitting ring (62) is rotatably connected to the fixing plate (61) via the connecting ring (63); a plurality of vertical rods (64) are arranged on the fitting ring (62); a loading assembly (10) is arranged below the plurality of vertical rods (64) for receiving and supporting the hollow blades; A movable seat (7), wherein a plurality of movable seats (7) are provided, and the plurality of movable seats (7) are respectively provided on one side of the plurality of bearing seats (5); A reciprocating mechanism (8), used for driving the plurality of movable seats (7) to move back and forth to knock and vibrate the plurality of hollow blades, and arranged on the mounting mechanism (6); A switching mechanism (9) is used to switch the output state of the rotating rod (4), respectively control the mounting mechanism (6) to drive the hollow blade to rotate, and control the operation of the reciprocating mechanism (8), and is arranged on the mounting mechanism (6).

2. The device for removing alumina core rods from hollow blades according to claim 1, characterized in that: The loading assembly (10) comprises a receiving plate (101) arranged below a plurality of uprights (64); a plurality of the bearing seats (5) are all arranged on the receiving plate (101); a rotating plate (102) is rotatably arranged on the receiving plate (101); a plurality of connecting plates (103) are arranged on the rotating plate (102); a push seat (104) is arranged at one end of the plurality of connecting plates (103); and a torsion spring (105) is arranged at a rotationally connected portion between the rotating plate (102) and the receiving plate (101); A limiting member (11) is provided on the receiving plate (101) for limiting the positions of the plurality of push seats (104).

3. The device for removing alumina core rods from hollow blades according to claim 2, characterized in that: The limiting member (11) comprises a protrusion (111) arranged on the receiving plate (101), a protrusion plate (112) being arranged on the protrusion (111), a spiral rod (113) being threadedly connected to the protrusion plate (112), a protrusion plate (114) being arranged at one end of the spiral rod (113), a push plate (115) being arranged at the other end of the spiral rod (113), a handle (116) being arranged on the protrusion plate (114), a bolt (117) being threadedly connected to the protrusion plate (114), and the bolt (117) being threadedly connected to the protrusion plate (112).

4. The device for removing alumina core rods from hollow blades according to claim 3, characterized in that: The reciprocating mechanism (8) comprises a moving ring (81) slidably arranged on a plurality of vertical rods (64), a plurality of connecting tubes (82) being arranged on the moving ring (81), a plurality of connecting columns (83) being arranged on each of the moving seats (7), and a connecting spring (84) being arranged between each of the connecting columns (83) and the connecting tubes (82); The moving ring (81) is provided with a moving assembly (12) for driving the moving ring (81) and a plurality of moving seats (7) to move back and forth.

5. The device for removing alumina core rods from hollow blades according to claim 4, characterized in that: The moving assembly (12) comprises a moving plate (121) arranged on a moving ring (81), a reciprocating ring seat (122) being arranged on the moving plate (121), an arc-shaped strip (123) being arranged between the two vertical rods (64), the moving plate (121) being slidably connected to the arc-shaped strip (123), a fixed plate (124) being arranged on the arc-shaped strip (123), an output shaft (125) being rotatably arranged on the fixed plate (124), a rotating plate (126) being arranged on the output shaft (125), and a deflection column (127) matching the reciprocating ring seat (122) being arranged on the rotating plate (126).

6. The device for removing alumina core rods from hollow blades according to claim 5, characterized in that: The switching mechanism (9) comprises a slide cylinder (91) slidably arranged on the rotating rod (4), a slide seat (92) being arranged at both upper and lower ends of the slide cylinder (91), a plurality of deflection wedge blocks (93) being arranged on the two slide seats (92), two transverse plates (94) being arranged on the plurality of vertical rods (64), a transverse plate (95) being arranged between the corresponding plurality of transverse plates (94), a connecting rod (96) being arranged on the rotating disk (102), a convex seat (97) being arranged at the top end of the connecting rod (96), a plurality of first driven wedge blocks (98) being arranged in the convex seat (97), a coaxial gear (99) being rotatably arranged on the rotating rod (4), a notch (910) being arranged on the coaxial gear (99), a plurality of second driven wedge blocks (911) being arranged in the notch (910); The fixed plate (61) is provided with a displacement assembly (13) for driving the sliding seat (92) to move; A transmission assembly (14) is disposed on one of the transverse plates (95) and is used to drive the output shaft (125) to rotate.

7. The device for removing alumina core rods from hollow blades according to claim 6, characterized in that: The displacement assembly (13) comprises a push rod (131) arranged on a fixed plate (61), an arc plate (132) being arranged on the push rod (131), and the arc plate (132) is in contact with the slide seat (92).

8. The device for removing alumina core rods from hollow blades according to claim 7, characterized in that: The transmission assembly (14) comprises a connecting plate (141) arranged on the horizontal plate (95), a vertical shaft (142) being rotatably arranged on the connecting plate (141), a transmission gear (143) being arranged on the vertical shaft (142), the transmission gear (143) being meshed with a coaxial gear (99), a first bevel gear (144) being arranged on the vertical shaft (142), a second bevel gear (145) being arranged on the output shaft (125), the second bevel gear (145) being meshed with the first bevel gear (144).

9. A method for removing alumina core rods from hollow blades, applied to the device for removing alumina core rods from hollow blades according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Installing the hollow blade: placing the hollow blade in the bearing seat (5), and using the limiting member (11) to install and limit the position of the hollow blade; Step 2: One-time chemical de-coring: Place the hollow blades in a kettle containing potassium hydroxide solution at medium temperature and low pressure: the solution concentration is 35%-45%, the solution temperature is 170℃-19℃, the pressure in the kettle is 2bar-10bar, and after the reaction time is 10h-30h, take out the blades and rinse them with a 5bar pressure water gun for 5min; Step 3: Secondary chemical de-coring: Place the blades that have undergone the primary chemical de-coring in a kettle containing potassium hydroxide solution at medium temperature and medium pressure: the solution concentration is 35%-45%, the solution temperature is 190℃-250℃, and the pressure in the kettle is 2bar-40bar. After the reaction time is 10h-30h, take out the blades and rinse them with a 5bar pressure water gun for 5min; Step 4: three-time chemical de-coring: the blades after the second chemical de-coring are placed in a kettle body containing sodium hydroxide solution at medium temperature and medium pressure: the solution concentration is 35%-45%, the solution temperature is 190°C-250°C, and the pressure in the kettle body is 2bar-40bar. After the reaction time is 10h-30h, the blades are taken out and washed with a 5bar pressure water gun for 5min. During the reaction in the kettle, the switching mechanism (9) controls the mounting mechanism (6) to drive the hollow blades to rotate; the switching mechanism (9) controls the reciprocating mechanism (8) to operate, driving the multiple moving seats (7) to move back and forth, thereby knocking and shaking the multiple hollow blades. Step 5: Citric acid neutralization: Place the leaves that have been de-cored three times in pneumatically stirred dilute citric acid for neutralization for 10 minutes; Step 6: Cleaning and drying: Place the leaves neutralized with citric acid in pneumatically stirred clean water for 5 minutes.

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