A mixing barrel capable of injecting high-concentration slurry of permanent magnetic ferrite

Abstract

The invention discloses a stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite, relates to the technical field of permanent magnetic ferrite conveying, and solves the technical problem that in the process of conveying high-concentration slurry to injection steel, due to the high viscosity of the slurry, magnetic tile products may not be able to absorb enough slurry in time in some cases, which will lead to failure to form sufficient strength and hardness during pressing or sintering, thereby affecting the production efficiency and yield of the product; the invention comprises a barrel body; the barrel body is divided into a stirring section and a feeding section, and the top surface of the feeding section is funnel-shaped; it also includes: a feeding mechanism, which is used for feeding the high-concentration slurry of permanent magnetic ferrite, and the feeding mechanism comprises a central large shaft rotatably arranged in the barrel body, a large-blade auger spirally arranged on the central large shaft, and a feeding auger; the invention can solve the problem of automatically conveying high-concentration material to injection steel, and prevent the magnetic tile product from having soft blanks due to failure to absorb the material, thereby affecting the yield.

Description

Technical Field

[0001] The invention belongs to the technical field of permanent magnetic ferrite conveying, and in particular relates to a stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite. Background Art

[0002] Permanent ferrite is a kind of metal oxide with ferromagnetism, which is an important component of magnetic materials. The production of permanent ferrite magnetic materials requires wet ball milling to obtain excellent magnetic properties. However, the water content of the slurry in wet ball milling is too high, which can reach 50-60wt% (wt% refers to weight percentage), and cannot be directly used for molding production. It is necessary to remove excess water in the slurry, and it is suitable for molding only when the water content reaches 30-40wt%. It is mainly made of SrO or BaO and Fe2O3 as raw materials and manufactured by ceramic process methods. As a functional material for generating magnetic fields, permanent ferrite plays an important role in many fields such as the electronics industry, information industry, motorcycles, power tool industry, and automobile industry.

[0003] At present, in order to manufacture parts or products of the required shape in the automotive industry, it is usually necessary to inject permanent magnet slurry into a press mold to form it. The concentration of permanent magnet slurry on the market is generally maintained at 70%. At this concentration, the transportation and filling of the slurry mainly rely on manual operation. The specific process is: after the press mold completes the last pressing and ejection, the operator needs to manually fill the slurry from the top of the mold, and then use a handheld scraper to scrape the surface of the slurry flat to ensure uniformity during pressing. After completing this series of manual operations, the mold will be sent to the press for pressing, and finally the magnetic tile product will be formed after the sintering process.

[0004] However, in the process of conveying high-concentration slurry to the injection steel, a problem is often encountered: due to the high viscosity of the slurry, the magnetic tile product may not be able to absorb enough slurry in time in some cases, which will lead to the failure to form sufficient strength and hardness during the pressing or sintering process, thus affecting the production efficiency and yield of the product. Therefore, how to solve the problem of material absorption during the transportation of high-concentration slurry and improve production efficiency and yield is the main challenge currently faced. Therefore, based on the above problems, we designed a stirring barrel that can inject high-concentration slurry of permanent magnet ferrite. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a stirring barrel capable of injecting high-concentration slurry of permanent magnet ferrite, which solves the technical problem that in the process of conveying high-concentration slurry to the injection steel, due to the high viscosity of the slurry, the magnetic tile product may not be able to absorb enough slurry in time in some cases, which will lead to the failure to form sufficient strength and hardness during the pressing or sintering process, thereby affecting the production efficiency and yield rate of the product.

[0006] To achieve the above-mentioned object, according to an embodiment of the first aspect of the present invention, a stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite is provided, comprising a barrel body;

[0007] The barrel body is divided into a stirring section and a feeding section, and the top surface of the feeding section is funnel-shaped;

[0008] Also includes:

[0009] The feeding mechanism is used for feeding high-concentration slurry of permanent magnet ferrite. The feeding mechanism includes a central large shaft rotatably arranged in the barrel body, a large-blade auger spirally arranged on the central large shaft, a feeding auger and several slurry resistors arranged on the large-blade auger for adjusting the slurry pressure.

[0010] A further improvement is that the large-blade auger is provided with a plurality of large plates, and each slurry resistor is sequentially arranged on the plurality of large plates.

[0011] A further improvement is that each of the slurry resistors includes a shell, an adjusting screw threadedly penetrating the shell, and a spring movably installed in the shell, and each of the shells has resistor outlets on both sides.

[0012] A further improvement is that there are two slurry resistors on the bottom large piece, and resistor inlets and outlets are provided on the large piece at positions corresponding to the shell ports.

[0013] A further improvement is that the bottom of the feeding section of the barrel body is connected with a spherical sealing valve through a fixing bolt, and the feeding port on the bottom surface of the feeding section is inserted into the receiving port of the spherical sealing valve.

[0014] A further improvement is that the feeding mechanism also includes a driving device arranged on the top surface of the barrel body, the driving device includes an electric motor and a reducer, the main shaft of the motor is connected to the input shaft of the reducer, the output shaft of the reducer is connected to the central large shaft through a flange, and several evenly distributed plastic rods are connected between the flanges.

[0015] A further improvement is that the large-blade auger is located in the stirring section, and the feeding auger is located in the feeding section.

[0016] A further improvement is that a small oil cylinder is connected to the bottom surface of the spherical sealing valve, a rod of the small oil cylinder is connected to the valve core of the spherical sealing valve, and a return cavity and a pressing cavity are arranged in the small oil cylinder.

[0017] A further improvement is that a sealing ring is provided in the upper and lower parts of the valve seat of the spherical sealing valve, the upper sealing ring is sleeved on the feeding port of the feeding section and the material receiving port of the spherical sealing valve, and the lower sealing ring is sleeved on the valve core.

[0018] A further improvement is that a slurry outlet is provided on the side of the spherical sealing valve, the slurry outlet is connected to an external access mold, and injection steel is provided in the access mold.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention designs the barrel body into two parts, a stirring section and a feeding section, wherein the top of the feeding section is designed in a funnel shape. The large-blade auger is welded to the central shaft and is located in the stirring section, while the feeding auger is located in the feeding section. The large-blade auger is provided with multiple large plates, each of which is equipped with a slurry resistor. By rotating and adjusting the adjusting screw in the slurry resistor, the locking degree of the spring inside the resistor can be adjusted, thereby controlling the flow size of the slurry from the resistor inlet to the resistor outlet, thereby achieving effective control of the downward pressure of the slurry. The motor is connected to the reducer, and the reducer is fixed to the central shaft through the upper and lower flanges, wherein the lower flange is directly connected to the central shaft. Between the upper and lower flanges, a plurality of plastic rods are evenly distributed, and these plastic rods play a safety protection role when the auger encounters resistance.

[0021] (2) During the feeding process, the present invention drives the central shaft to rotate by the driving device, thereby driving the large blade auger and the feeding auger to rotate together. The slurry is first squeezed downward by the large blade auger and transferred to the feeding auger, and then transported by the feeding auger to the injection steel connected to the mold. Subsequently, the piston in the injection steel moves upward to inject the slurry into the mold, completing the automatic suction process. A spherical sealing valve is provided under the feeding auger, and the valve is driven by a small oil cylinder. Pushed by the small oil cylinder, the valve core of the spherical sealing valve moves upward, thereby sealing the slurry circuit. The high-concentration injection barrel of the present invention can smoothly suck slurry with a concentration of more than % into the injection steel, effectively solving the problem of automatic delivery of high-concentration materials into the injection steel, and avoiding the situation where the magnetic tile products have soft blanks due to failure to absorb the materials, thereby ensuring the stability of production efficiency and yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 The present invention Figure 1The enlarged structural diagram at A in the middle;

[0024] Figure 3 The present invention Figure 1 Schematic diagram of the partially enlarged structure of the middle ball sealing valve and the barrel;

[0025] Figure 4 It is a schematic diagram of the structure of the stirring section, large blade auger and slurry resistor of the present invention;

[0026] Figure 5 It is a schematic diagram of the sealing ring structure on the upper part of the spherical sealing valve of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the feeding section of the barrel body of the present invention.

[0028] Markings in the figure:

[0029] 1. Ball sealing valve; 11. Small oil cylinder; 12. Slurry outlet; 101. Sealing ring; 102. Valve core; 2. Barrel body; 21. Mixing section; 22. Feeding section; 3. Feeding mechanism; 31. Central shaft; 32. Plastic rod; 33. Motor; 34. Reducer; 35. Large blade auger; 351. Large blade body; 352. Resistor inlet and outlet; 36. Feeding auger; 37. Slurry resistor; 371. Shell; 372. Adjusting screw; 373. Spring; 374. Resistor outlet; 375. Resistor inlet; 301. Flange; 4. Access to mold; 41. Injection steel. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0031] like Figure 1 As shown, a stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite comprises a barrel body 2, the barrel body 2 is divided into a stirring section 21 and a feeding section 22, and the top surface of the feeding section 22 is funnel-shaped;

[0032] The feeding mechanism 3 includes a central shaft 31 rotatably arranged in the barrel body 2, a large blade auger 35 and a feeding auger 36 spirally arranged on the central shaft 31, several slurry resistors 37 arranged on the large blade auger 35, and a driving device arranged on the top surface of the barrel body 2. The large blade auger 35 is located in the stirring section 21, and the feeding auger 36 is located in the feeding section 22. The driving device includes a motor 33 and a reducer 34. The main shaft of the motor 33 is connected to the input shaft of the reducer 34, and the output shaft of the reducer 34 is connected to the central shaft 31. The driving device drives the central shaft 31 to rotate and drives the large blade auger 35 and the feeding auger 36 to rotate, so as to realize the feeding of high-concentration slurry of permanent magnetic ferrite;

[0033] Specifically, as a preferred embodiment, the output shaft of the reducer 34 is connected to the central shaft 31 through the flange 301, and a number of evenly distributed plastic rods 32 are connected between the flanges 301. When the motor 32 is connected to the reducer 34, the lower flange 301 is directly connected to the central shaft 31. By evenly distributing a number of plastic rods 32 between the upper and lower flanges 301, these plastic rods 32 can play a safety protection role when the auger encounters resistance.

[0034] Specifically, as a preferred embodiment, the large blade auger 35 is provided with a plurality of large pieces 351, and each slurry resistor 37 is sequentially provided on the plurality of large pieces 351. Each slurry resistor 37 includes a housing 371, an adjusting screw 372 threadedly penetrating the housing 371, and a spring 373 movably installed in the housing 371. Each housing 371 is provided with a resistor inlet 375 and a resistor outlet 374. By rotating and adjusting the adjusting screw 372 in the slurry resistor 37, the locking degree of the spring 373 inside the resistor can be adjusted, thereby controlling the flow size of the slurry from the resistor inlet 375 to the resistor outlet 374, and realizing effective control of the downward pressure of the slurry;

[0035] Specifically, as a preferred embodiment, there are two slurry resistors 37 on the bottom large piece 351, and a resistor inlet and outlet 352 is provided on the large piece 351 at a position corresponding to the port of the shell 371;

[0036] Specifically, as a preferred embodiment, the bottom of the feeding section 22 of the barrel body 2 is connected to the ball sealing valve 1 through a fixing bolt, the feeding port on the bottom of the feeding section 22 is inserted into the receiving port of the ball sealing valve 1, the bottom of the ball sealing valve 1 is connected to a small oil cylinder 11, the rod of the small oil cylinder 11 is connected to the valve core 102 of the ball sealing valve 1, and a return cavity and a pressing cavity are provided in the small oil cylinder 11;

[0037] It should also be noted that the side of the ball sealing valve 1 in the application document is provided with a slurry outlet 12. Before implementation, the external access mold 4 is connected to the slurry outlet 12 of the ball sealing valve 1. The access mold 4 is provided with an injection steel 41. When the feeding auger 36 squeezes the slurry into the access mold 4, the internal injection steel 41 is sucked upward at the same time. This part is the prior art and the working principle has been disclosed.

[0038] After the injection steel 41 has finished absorbing the material, the valve core 102 of the ball sealing valve 1 moves upwards through the push of the small oil cylinder 11, thereby sealing the slurry circuit. The high-concentration injection barrel of the present invention can smoothly absorb slurry with a concentration of more than 70% into the injection steel 41, effectively solving the problem of automatic delivery of high-concentration materials to the injection steel 41, and avoiding the situation where the magnetic tile product has a soft blank due to the failure of absorbing the material, thereby ensuring the stability of production efficiency and yield rate;

[0039] Specifically, a sealing ring 101 is provided in the upper and lower parts of the valve seat of the spherical sealing valve 1. The upper sealing ring 101 is sleeved on the feeding port of the feeding section 22 and the receiving port of the spherical sealing valve 1. The sealing ring 101 is used to improve the sealing performance of the interface. The lower sealing ring 101 is sleeved on the valve core 102, so that the small oil cylinder 11 drives the valve core 102 of the spherical sealing valve 1 to move upward, which plays a certain sealing role.

[0040] like Figures 1 to 6 As shown, in this embodiment, it should be noted that this application document only aims to improve the shortcomings that in the existing process of conveying high-concentration slurry to the injection steel 41, due to the high viscosity of the slurry, the magnetic tile product may not be able to absorb enough slurry in time in some cases, which will lead to failure to form sufficient strength and hardness during the pressing or sintering process, thereby affecting the production efficiency and yield rate of the product, and does not involve other aspects; the working principle of the stirring barrel that can inject permanent magnet ferrite high-concentration slurry is introduced as follows:

[0041] In the scheme of the present invention, the motor 32 is first connected to the reducer 34, and the reducer 34 is fixed to the central shaft 31 through the upper and lower flanges 301, wherein the lower flange 301 is directly connected to the central shaft 31. Between the upper and lower flanges 301, a plurality of plastic rods 32 are evenly distributed, and these plastic rods play a safety protection role when the auger encounters resistance.

[0042] The barrel 2 is designed to be divided into two parts, a stirring section 21 and a feeding section 22, wherein the top of the feeding section 22 is designed in a funnel shape. The large blade auger 35 is welded to the central shaft 31 and is located in the stirring section 21, while the feeding auger 36 is located in the feeding section 22. The large blade auger 35 is provided with multiple large pieces 351, and each large piece 351 is equipped with a slurry resistor 37. By rotating and adjusting the adjusting screw 372 in the slurry resistor 37, the locking degree of the spring 373 inside the resistor can be adjusted, thereby controlling the flow size of the slurry from the resistor inlet 375 to the resistor outlet 374, and realizing effective control of the downward pressure of the slurry.

[0043] During the feeding process, the driving device drives the central shaft 31 to rotate, thereby driving the large blade auger 35 and the feeding auger 36 to rotate together. The slurry is first squeezed downward by the large blade auger 35 and transferred to the feeding auger 36, and then transported by the feeding auger 36 to the injection steel 41 connected to the mold 4. Subsequently, the piston in the injection steel 41 moves upward to inject the slurry into the mold, completing the automatic suction process.

[0044] In addition, a ball sealing valve 1 is provided below the feeding auger 36, and the valve is driven by a small oil cylinder 11. The valve core 102 of the ball sealing valve 1 moves upward by the push of the small oil cylinder 11, thereby sealing the slurry circuit. The high-concentration injection barrel of the present invention can smoothly suck slurry with a concentration of more than 70% into the injection steel 41, effectively solving the problem of automatic delivery of high-concentration materials to the injection steel 41, and avoiding the situation where the magnetic tile product has a soft blank due to failure to absorb the material, thereby ensuring the stability of production efficiency and yield rate.

[0045] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite, characterized in that: It includes a barrel (2); The barrel (2) is divided into a stirring section (21) and a feeding section (22), and the top surface of the feeding section (22) is funnel-shaped; Also includes: The feeding mechanism (3) is used for feeding high-concentration slurry of permanent magnetic ferrite, and the feeding mechanism (3) comprises a central shaft (31) rotatably arranged in the barrel body (2), a large-blade auger (35) spirally arranged on the central shaft (31), a feeding auger (36), and a plurality of slurry resistors (37) arranged on the large-blade auger (35) for adjusting the slurry pressure.

2. A stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite according to claim 1, characterized in that: The large-blade auger (35) is provided with a plurality of large plates (351), and each slurry resistor (37) is sequentially arranged on the plurality of large plates (351).

3. A stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite according to claim 2, characterized in that: Each of the slurry resistors (37) includes a shell (371), an adjusting screw (372) threadedly penetrated through the shell (371), and a spring (373) movably installed in the shell (371), and resistor outlets (374) on both sides of each of the shells (371).

4. A stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite according to claim 3, characterized in that: There are two slurry resistors (37) on the bottom large piece (351), and resistor inlets and outlets (352) are provided on the large piece (351) at positions corresponding to ports of the shell (371).

5. A stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite according to claim 1, characterized in that: The bottom of the feeding section (22) of the barrel body (2) is connected to a spherical sealing valve (1) via fixing bolts, and the feeding port on the bottom surface of the feeding section (22) is inserted into the receiving port of the spherical sealing valve (1).

6. A stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite according to claim 1, characterized in that: The feeding mechanism (3) further comprises a driving device arranged on the top surface of the barrel body (2), the driving device comprising a motor (33) and a reducer (34), the main shaft of the motor (33) is connected to the input shaft of the reducer (34), the output shaft of the reducer (34) is connected to the central large shaft (31) via a flange (301), and a plurality of evenly distributed plastic rods (32) are connected between the flanges (301).

7. A stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite according to claim 1, characterized in that: The large-blade auger (35) is located in the stirring section (21), and the feeding auger (36) is located in the feeding section (22).

8. A stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite according to claim 5, characterized in that: The bottom surface of the spherical sealing valve (1) is connected to a small oil cylinder (11), the rod of the small oil cylinder (11) is connected to the valve core (102) of the spherical sealing valve (1), and a return cavity and a pressing cavity are arranged in the small oil cylinder (11).

9. A stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite according to claim 5, characterized in that: A sealing ring (101) is provided in the valve seat of the spherical sealing valve (1) at the top and bottom, respectively. The upper sealing ring (101) is sleeved on the feeding port of the feeding section (22) and the material receiving port of the spherical sealing valve (1), and the lower sealing ring (101) is sleeved on the valve core (102).

10. A stirring barrel capable of injecting high-concentration slurry of permanent magnetic ferrite according to claim 5, characterized in that: A slurry outlet (12) is provided on the side of the spherical sealing valve (1), and the slurry outlet (12) is connected to an external access mold (4), and an injection steel (41) is provided inside the access mold (4).

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