Continuous annealing furnace with shielding gas recovery function for magnetic powder production

Abstract

The utility model belongs to the technical field of magnetic powder production, and particularly relates to a continuous annealing furnace with a protective gas recovery function for magnetic powder production, which comprises a base, a furnace body structure mounted at the top of the base, gas recovery structures arranged on the right side and the left side of the furnace body structure, and a purification and collection structure connected to the left side of the furnace body structure. The purification structure comprises a connecting unit and a spraying purification unit, the spraying purification unit comprises a sealing bearing, a spraying pipe is installed in the sealing bearing, a spiral blade is installed in the spraying pipe, a liquid inlet pipe is installed on the outer surface of the top sealing bearing, and a collecting drawer is arranged at the bottom of the spraying pipe. According to the continuous annealing furnace with the shielding gas recycling function for magnetic powder production, through the arrangement of the purification structure, spraying is conducted through the spraying pipe by means of the conveying pipe, and the spraying pipe conducts rotary spraying in the spraying process by means of the spiral blades and the sealing bearings, so that magnetic powder in recycled shielding gas is adsorbed, and the magnetic powder is collected through the collecting drawer.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic powder production, in particular to a continuous annealing furnace for magnetic powder production with a protective gas recovery function. Background Art

[0002] Magnetic powder is a kind of hard magnetic single-domain particle. It is made into a magnetic paste with an adhesive, a solvent, etc., and coated on the surface of a plastic or metal sheet base (support), then magnetic recording materials such as magnetic tapes, magnetic disks, and magnetic cards can be made. And in the production process of manufacturing finished products such as magnetic blocks or magnetic rings from magnetic powder, an annealing furnace is needed.

[0003] At present, in the processing of metal magnetic powder cores, the metal magnetic powder cores need to be heated by high-temperature electricity, and after heating, a more convenient annealing operation is also required. Traditional annealing equipment is not convenient for pulling and annealing the metal magnetic powder cores during use, which is not conducive to the subsequent heating and steady cooling of the magnetic powder cores. Its body temperature is relatively high, making it inconvenient to transport it to the annealing equipment for unified annealing operation, and manual operation is prone to scalding, which has a certain degree of danger.

[0004] As disclosed in a high-efficiency annealing furnace for the production of metal magnetic powder cores in Chinese Patent CN215481103U, after preparing the metal magnetic powder cores to be annealed, they are then placed into the heat conduction cylinder. Then, the driving motor switch is turned on, and immediately the driving motor is powered on and runs. The output end drives the screw rod to rotate with limited displacement. Subsequently, the nut sleeved above the screw rod linearly displaces along the outer wall of the screw rod. At this time, the buckle below the connecting rod below the nut drives the heat conduction cylinder to linearly displace and be introduced into the annealing pipe sleeve, and is introduced into the placement box along the end. The spray pipe inside the annealing wire mesh box is started to spray coolant, achieving the purpose of reducing the temperature of the outer wall of the sealed heat conduction cylinder and annealing the metal magnetic powder cores.

[0005] However, in the process of using the annealing furnace for magnetic powder heating in the prior art, it is necessary to inject a protective gas into the annealing furnace. During the recovery process of the protective gas, it is very easy for a small amount of magnetic powder to be doped into the gas, thereby affecting the purity of the protective gas and subsequent use, and causing waste of product resources.

[0006] Therefore, we urgently need to provide a continuous annealing furnace for magnetic powder production with a protective gas recovery function. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a continuous annealing furnace for magnetic powder production with a protective gas recovery function, so as to solve the problem that in the prior art, the annealing furnace for heating magnetic powder needs to inject protective gas into the interior of the annealing furnace during use, and during the process of recovering the protective gas, it is very easy for a small amount of magnetic powder to be doped in the gas, thereby affecting the purity of the protective gas and subsequent use, and causing waste of product resources.

[0008] To achieve the above object, the present utility model provides the following technical solution: A continuous annealing furnace for magnetic powder production with a protective gas recovery function, including a base, a furnace body structure is installed on the top of the base, gas recovery structures are arranged on the right side and the left side of the furnace body structure, and a purification and collection structure is connected to the left side of the furnace body structure.

[0009] The purification and collection structure includes a connection unit and a spray purification unit.

[0010] The spray purification unit includes a sealed bearing, a spray pipe is installed inside the sealed bearing, a spiral blade is installed inside the spray pipe, a liquid inlet pipe is installed on the outer surface of the top sealed bearing, and a collection drawer is arranged at the bottom of the spray pipe.

[0011] Preferably, the connection unit includes a purification box, a drain pipe is installed in the middle of the bottom surface of the purification box, and a delivery pipe is installed in the middle of the right side of the purification box.

[0012] Preferably, the outer surface of the collection drawer is in sealed sliding connection with the inner wall of a rectangular hole opened at the bottom of the front of the purification box, the outer surface of the bottom sealed bearing is connected with the inner wall of a circular hole opened in the middle of the top surface of the purification box, and a filter screen is installed at the bottom of the collection drawer. The spray pipe is an atomizing spray pipe, and the end of the liquid inlet pipe away from the spray pipe is connected to a pump body, which is convenient for liquid spraying.

[0013] Preferably, the furnace body structure includes a furnace body, a support frame is installed at one end near the front of the top surface of the furnace body, an asynchronous motor is installed on the top of the support frame, the output end of the asynchronous motor is connected to a transmission member, the outer surface of the transmission member is connected to a linkage plate, a closing door is connected to the front of the linkage plate, guide rails are connected to the left and right sides of the closing door, an air duct is installed on the front of the closing door, and a fan is installed near the bottom inside the air duct.

[0014] Preferably, the bottom surface of the furnace body is fixedly connected to the middle of the top surface of the base, the back of the closing door is slidably connected to one end of the front of the furnace body, and the back of the guide rail is fixedly connected to the left and right sides of one end of the front of the furnace body. The transmission member is a threaded rod, and a threaded barrel is threadedly connected to the outer surface of the threaded rod, and the outer surface of the threaded barrel is connected to the linkage plate.

[0015] Preferably, the gas recovery structure includes a gas storage tank. An intake pipe is installed in the middle of the top surface of the gas storage tank. A connecting pipe is arranged on the left side of the gas storage tank. The left end of the connecting pipe is connected to a recovery tank. An exhaust pipe is installed in the middle of the left side of the recovery tank.

[0016] Preferably, one end of the intake pipe away from the gas storage tank is connected to the middle of the right side of the furnace body. One end of the connecting pipe away from the recovery tank is connected to the middle of the left side of the purification box. The exhaust pipe is connected to an air pump, and the purified protective gas can be transported through the air pump.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. For the continuous annealing furnace for magnetic powder production with a protective gas recovery function, through the setting of the purification structure, spraying is carried out via the spray pipe by means of the delivery pipe. The spray pipe rotates during spraying by using the spiral blade and the sealed bearing, so as to adsorb the magnetic powder in the recovered protective gas, and the collection drawer is used to collect it.

[0019] 2. For the continuous annealing furnace for magnetic powder production with a protective gas recovery function, through the setting of the furnace body structure, the asynchronous motor is started to drive the transmission member for transmission, so as to drive the linkage plate and the closing door to lift and open / close the door, and after the door is opened, the fan inside the air duct is used to guide the hot air gushing out during door opening, thus ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall external structure schematic diagram of the present utility model;

[0021] Figure 2 is the internal structure schematic diagram of the present utility model;

[0022] Figure 3 is the partial enlarged structure diagram of the furnace body structure of the present utility model;

[0023] Figure 4 is the enlarged sectional view of the spray structure of the present utility model.

[0024] In the figure: 1, base; 101, furnace body; 102, support frame; 103, asynchronous motor; 104, transmission member; 105, linkage plate; 106, closing door; 107, guide rail; 108, air duct; 109, fan; 201, gas storage tank; 202, intake pipe; 203, connecting pipe; 204, recovery tank; 205, exhaust pipe; 301, purification box; 302, collection drawer; 303, drain pipe; 304, sealed bearing; 305, spray pipe; 306, spiral blade; 307, liquid inlet pipe; 308, delivery pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1 - 4 , the present invention provides a technical solution: Embodiment 1:

[0027] A continuous annealing furnace for magnetic powder production with a protective gas recovery function, including a base 1, a furnace body structure is installed on the top of the base 1, gas recovery structures are arranged on the right and left sides of the furnace body structure, and a purification and collection structure is connected to the left side of the furnace body structure.

[0028] The purification and collection structure includes a connection unit and a spray purification unit. The spray purification unit includes a sealed bearing 304, a spray pipe 305 is installed inside the sealed bearing 304, a spiral blade 306 is installed inside the spray pipe 305, a liquid inlet pipe 307 is installed on the outer surface of the top sealed bearing 304, and a collection drawer 302 is arranged at the bottom of the spray pipe 305. The connection unit includes a purification box 301, a drain pipe 303 is installed in the middle of the bottom surface of the purification box 301, and a delivery pipe 308 is installed in the middle of the right side of the purification box 301.

[0029] The outer surface of the collection drawer 302 is hermetically and slidably connected to the inner wall of a rectangular hole opened at the bottom of the front of the purification box 301, the outer surface of the bottom sealed bearing 304 is connected to the inner wall of a circular hole opened in the middle of the top surface of the purification box 301, and a filter screen is installed at the bottom of the collection drawer 302.

[0030] Through the setting of the purification structure, spraying is carried out via the spray pipe 305 by means of the delivery pipe 308, and the spray pipe 305 rotates and sprays during the spraying process by using the spiral blade 306 and the sealed bearing 304, so as to adsorb the magnetic powder in the recovered protective gas, and the collection drawer 302 is used to collect it.

[0031] When recovering the protective gas, the protective gas enters the inside of the purification box 301 via the delivery pipe 308, and then spraying is carried out via the liquid inlet pipe 307 and the spray pipe 305 by using a pump body. The spiral blade 306 is impacted by the water flow to make the spray pipe 305 rotate and spray by using the sealed bearing 304, so as to adsorb the magnetic powder doped in the protective gas, and it falls into the inside of the collection drawer 302. The filter screen at the bottom of the collection drawer 302 is used to filter and collect the liquid and magnetic powder, the waste liquid is discharged via the drain pipe 303, a check valve is installed on the delivery pipe 305, a valve is installed on the drain pipe 303, and a valve is installed on the liquid inlet pipe 307. Embodiment 2:

[0032] On the basis of Embodiment 1, the furnace body structure includes a furnace body 101. One end of the top surface of the furnace body 101 close to the front is provided with a support frame 102. An asynchronous motor 103 is installed on the top of the support frame 102. The output end of the asynchronous motor 103 is connected with a transmission member 104. A linkage plate 105 is connected to the outer surface of the transmission member 104. A closing door 106 is connected to the front of the linkage plate 105. Guide rails 107 are connected to the left and right sides of the closing door 106. An air duct 108 is installed on the front of the closing door 106. A fan 109 is installed near the bottom inside the air duct 108. The bottom surface of the furnace body 101 is fixedly connected to the middle of the top surface of the base 1. The back surface of the closing door 106 is slidably connected to one end of the front surface of the furnace body 101. The back surfaces of the guide rails 107 are fixedly connected to the left and right sides of one end of the front surface of the furnace body 101.

[0033] The gas recovery structure includes a gas storage tank 201. A gas inlet pipe 202 is installed in the middle of the top surface of the gas storage tank 201. A connecting pipe 203 is arranged on the left side of the gas storage tank 201. The left end of the connecting pipe 203 is connected to a recovery tank 204. An exhaust pipe 205 is installed in the middle of the left side of the recovery tank 204. The end of the gas inlet pipe 202 far from the gas storage tank 201 is connected to the middle of the right side of the furnace body 101. The end of the connecting pipe 203 far from the recovery tank 204 is connected to the middle of the left side of the purification tank 301.

[0034] Through the setting of the furnace body structure, starting the asynchronous motor 103 drives the transmission member 104 to drive, so as to drive the linkage plate 105 and the closing door 106 to open and close the door up and down, and use the fan 109 inside the air duct 108 to divert the hot air gushing out after opening the door, so as to ensure safety.

[0035] After annealing with the furnace body 101 is completed, start the asynchronous motor 103 to drive the transmission member 104 to drive. The output end of the asynchronous motor 103 drives the threaded rod to rotate. By using the threaded connection between the threaded rod and the threaded cylinder, and the connection between the threaded cylinder and the linkage plate 105, the linkage plate 105 and the closing door 106 are driven to move up and down to complete the opening and closing of the furnace body 101. When the furnace body 101 is opened, start the fan 109 to rotate, so as to divert the hot air released inside the furnace body 101 and prevent high temperature from harming the staff. When annealing with the furnace body 101 closed, the protective gas inside the gas storage tank 201 enters the inside of the furnace body 101. After annealing is completed, the gas enters the purification tank 301 through the delivery pipe 308. After the gas is purified, it enters the recovery tank 204 through the connecting pipe 203, and can be recycled through the exhaust pipe 205 subsequently.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent in such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A continuous annealing furnace for producing magnetic powder with a protective gas recovery function, comprising a base (1), characterized in that: A furnace structure is installed on the top of the base (1), a gas recovery structure is arranged on the right and left sides of the furnace structure, and a purification and collection structure is connected to the left side of the furnace structure; The purification and collection structure includes a connection unit and a spray purification unit; The spray purification unit comprises a sealed bearing (304), a spray pipe (305) is installed inside the sealed bearing (304), a spiral blade (306) is installed inside the spray pipe (305), a liquid inlet pipe (307) is installed on the outer surface of the sealed bearing (304) at the top, and a collecting drawer (302) is arranged at the bottom of the spray pipe (305).

2. The continuous annealing furnace for magnetic powder production with protective gas recovery function according to claim 1, characterized in that: The connection unit comprises a purification box (301), a liquid discharge pipe (303) is installed in the middle of the bottom surface of the purification box (301), and a delivery pipe (308) is installed in the middle of the right side of the purification box (301).

3. The continuous annealing furnace for magnetic powder production with protective gas recovery function according to claim 2, characterized in that: The outer surface of the collecting drawer (302) is sealingly and slidably connected to the inner wall of a rectangular hole provided at the bottom of the front of the purification box (301); the outer surface of the sealing bearing (304) at the bottom is connected to the inner wall of a circular hole provided at the middle of the top surface of the purification box (301); and a filter screen is installed at the bottom of the collecting drawer (302).

4. The continuous annealing furnace for magnetic powder production with protective gas recovery function according to claim 1, characterized in that: The furnace structure comprises a furnace body (101); a support frame (102) is installed on the top surface of the furnace body (101) near one end of the front side; an asynchronous motor (103) is installed on the top of the support frame (102); an output end of the asynchronous motor (103) is connected to a transmission member (104); an outer surface of the transmission member (104) is connected to a linkage plate (105); a front side of the linkage plate (105) is connected to a closed door (106); left and right sides of the closed door (106) are connected to guide rails (107); a wind duct (108) is installed on the front side of the closed door (106); and a fan (109) is installed inside the wind duct (108) near the bottom.

5. The continuous annealing furnace for magnetic powder production with protective gas recovery function according to claim 4, characterized in that: The bottom surface of the furnace body (101) is fixedly connected to the middle of the top surface of the base (1), the back surface of the closed door (106) is slidably connected to one end of the front surface of the furnace body (101), and the back surface of the guide rail (107) is fixedly connected to the left and right sides of one end of the front surface of the furnace body (101).

6. The continuous annealing furnace for magnetic powder production with protective gas recovery function according to claim 1, characterized in that: The gas recovery structure comprises a gas storage tank (201), an air intake pipe (202) is installed in the middle of the top surface of the gas storage tank (201), a connecting pipe (203) is arranged on the left side of the gas storage tank (201), a recovery tank (204) is connected to the left end of the connecting pipe (203), and an exhaust pipe (205) is installed in the middle of the left side of the recovery tank (204).

7. The continuous annealing furnace for producing magnetic powder with protective gas recovery function according to claim 6, characterized in that: The end of the air inlet pipe (202) away from the gas storage tank (201) is connected to the middle of the right side of the furnace body (101), and the end of the connecting pipe (203) away from the recovery tank (204) is connected to the middle of the left side of the purification box (301).

Images