Tungsten carbide powder feeding device

Abstract

The utility model relates to a tungsten carbide powder feeding device in the technical field of ball milling equipment, which comprises a tank body, a feeding pipe and a discharging pipe are arranged on the tank body, a return pipe is arranged on the discharging pipe, a material pump is arranged on the return pipe, a material distribution ring is arranged in the tank body, and the material distribution ring is fixedly connected with the inner wall of the upper portion of the tank body. The central axis of the material distribution ring coincides with the central axis of the tank body, the material distribution ring is connected with a liquid inlet pipe, the liquid inlet pipe is communicated with the return pipe, and a plurality of discharge ports are uniformly distributed in the lower surface of the material distribution ring in the circumferential direction. A liquid material enters the tank body from the liquid inlet pipe of the tank body to be subjected to ball milling, the liquid material can fall down along the inner wall of the tank body due to the arrangement of the material distribution ring, and the adverse effects such as scaling caused by splashing and adhesion of the material to the top of the tank body when the material enters the tank body are avoided; materials at the bottom of the tank body can enter the material distribution ring through the backflow pipe, and material circulation is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of ball mill equipment, and particularly relates to a tungsten carbide powder feeding device. BACKGROUND

[0002] In the production process of hard alloy, ball milling is a common and very important process, for example, tungsten carbide powder and cobalt powder mixed alcohol need to be added into a ball mill for wet milling, so as to obtain first mixed slurry. In the prior art, the mixed slurry of tungsten carbide powder, cobalt powder and alcohol generally directly enters the tank body from the top of the tank body of the ball mill, which is easy to cause splashing of the material, and the splashed material is adhered to the top of the tank body, causing fouling, which is difficult to clean and affects the subsequent production. Therefore, a tungsten carbide powder feeding device is needed to solve the above technical problems. SUMMARY

[0003] In view of the above defects in the prior art, the utility model provides a tungsten carbide powder feeding device, which comprises a tank body, an inlet pipe and an outlet pipe are arranged on the tank body, a reflux pipe is arranged on the outlet pipe, a material pump is arranged on the reflux pipe, the outlet end of the reflux pipe is communicated with the side wall of the tank body, a material distribution ring is arranged in the tank body, the material distribution ring is fixedly connected with the inner wall of the upper part of the tank body, the central axis of the material distribution ring coincides with the central axis of the tank body, the material distribution ring is connected with a liquid inlet pipe, the liquid inlet pipe is communicated with the reflux pipe, a switch valve one is arranged at the communicated end of the reflux pipe and the liquid inlet pipe, a switch valve two is arranged at the liquid inlet pipe close to the reflux pipe, and a plurality of discharge ports are uniformly distributed on the lower surface of the material distribution ring in the circumferential direction.

[0004] It should be noted that under the action of the material pump, the material at the bottom of the tank body can enter the material distribution ring through the reflux pipe (at this time, the switch valve two is closed to avoid flowing out from the liquid inlet pipe), and then re-enters the tank body from the discharge port, falls along the inner wall of the tank body, improves the mixing effect and efficiency, and avoids the splashing of the material when entering the tank body, the adhesion of the material to the top of the tank body, and the fouling and other adverse effects.

[0005] Preferably, a stirring assembly is arranged in the tank body, the stirring assembly comprises a vertical rotating shaft, the top of the vertical rotating shaft extends out of the tank body and is connected with a stepping motor, and a vertical stirring rod is connected with the vertical rotating shaft in the tank body through a horizontal rod.

[0006] It should be noted that the stirring assembly is driven to rotate by the stepping motor, so as to stir the material in the tank body and improve the mixing efficiency.

[0007] Preferably, a bevel gear one is fixed on a vertical rotating shaft located outside the tank body. The bevel gear one meshes with a bevel gear two, which is connected to the output shaft of a stepper motor. The horizontal rod is an electric push rod. The fixed end of the electric push rod is fixedly connected to the vertical rotating shaft, and the telescopic end of the electric push rod is fixedly connected to a vertical stirring rod. A wire channel is provided inside the vertical rotating shaft. The wire channel coincides with the central axis of the vertical rotating shaft. Each electric push rod is connected to an electric wire. The electric wire passes through the wire channel and is connected to an external power source through a conductive slip ring.

[0008] It should be noted that the conductive slip ring allows the electric push rod to extend and retract flexibly while rotating with the vertical shaft. The extension and retraction of the electric push rod can adjust the stirring range of the vertical stirring rod, further improving the stirring effect. At the same time, when the vertical stirring rod contacts the inner wall of the tank, it can scrape the material and prevent the material from sticking to the inner wall of the tank.

[0009] Preferably, the vertical stirring rod is located below the material distribution ring, the inner diameter of the lower end of the material distribution ring is larger than the inner diameter of the upper end of the material distribution ring, and one side of the discharge port is connected to the inner wall of the tank.

[0010] It should be noted that the discharge port on the fabric ring allows the material to fall along the inner wall of the tank, avoiding splashing and further reducing the probability of material splashing onto the top of the tank.

[0011] Preferably, the lower end of the discharge pipe is provided with a switch valve three, and the return pipe is connected to the discharge pipe above the switch valve three.

[0012] It should be noted that during operation, closing valve three and starting the material pump can draw the material at the bottom of the tank into the return pipe and allow it to re-enter the tank from the upper side wall. This does not affect the discharge and return flow, while reducing the number of openings on the tank.

[0013] Working principle: Liquid materials (slurry) enter the tank through the inlet pipe. Under the action of the distribution ring, splashing of materials is reduced, and the materials are stirred in the tank to achieve mixing and ball milling. During the ball milling process, the material at the bottom of the tank can enter the distribution ring through the return pipe under the action of the feed pump, and then re-enter the tank from the discharge port. This accelerates the circulation of materials, improves the uniformity of ball milling, and helps to improve the ball milling effect and efficiency. At the same time, it avoids splashing when materials enter the tank and prevents materials from sticking to the top of the tank, causing scale and other adverse effects.

[0014] This utility model also includes other components that enable the normal operation of a tungsten carbide powder feeding device, such as control components for a stepper motor, control components for opening and closing dampers, control components for a material pump, and control components for an electric push rod, all of which are conventional technologies in the field. Furthermore, devices or components not limited in this utility model, such as material pumps, conductive slip rings, and electric push rods, all employ conventional technologies and equipment in the field.

[0015] The beneficial effects of this invention are as follows: Liquid materials (slurry) can enter the tank through the inlet pipe for ball milling. The material distribution ring allows the liquid material to fall along the inner wall of the tank, preventing splashing when entering the tank and avoiding material sticking to the top of the tank, which can cause scaling and other adverse effects. Material at the bottom of the tank can enter the material distribution ring through the return pipe and fall along the inner wall from the top of the tank, accelerating the circulation of material in the tank and further improving the ball milling effect and efficiency. The device has a reasonable overall structure, is simple to operate, and is highly practical. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a three-dimensional structural diagram of a tungsten carbide powder feeding device according to Embodiment 1 of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of a tungsten carbide powder feeding device according to Embodiment 2 of this utility model;

[0019] Figure 3 This is a bottom view of the fabric ring in an embodiment of the present invention;

[0020] Figure 4 for Figure 2 Diagram showing the state of the electric actuator after it has been extended.

[0021] In the diagram: 1. Tank body; 2. Feed pipe; 3. Vertical stirring rod; 4. Stepper motor; 5. Discharge pipe; 6. Return pipe; 7. Feed pump; 8. Material distribution ring; 9. Discharge port; 10. Bevel gear one; 11. Bevel gear two; 12. Conductive slip ring; 13. Liquid inlet pipe. Detailed Implementation

[0022] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0023] Example 1

[0024] like Figure 1 , 3 As shown, this utility model provides a tungsten carbide powder feeding device, including a tank body 1. The tank body 1 is provided with a feed pipe 2 and a discharge pipe 5. The discharge pipe 5 is provided with a return pipe 6. The return pipe 6 is provided with a material pump 7, which is a pneumatic diaphragm pump. The tank body 1 is provided with a material distribution ring 8, which is fixedly connected to the inner wall of the upper part of the tank body 1. The central axis of the material distribution ring 8 coincides with the central axis of the tank body 1. The material distribution ring 8 is connected to a liquid inlet pipe 13, which is connected to the return pipe 6. The end of the return pipe 6 connected to the liquid inlet pipe 13 is provided with a first switch valve. The liquid inlet pipe is provided with a second switch valve near the return pipe. The lower surface of the material distribution ring 8 has multiple discharge ports 9 evenly distributed circumferentially.

[0025] Under the action of the material pump 7, the material at the bottom of the tank 1 can enter the material distribution ring 8 through the return pipe 6, and then enter the tank 1 again through the discharge port 9, falling down along the inner wall of the tank 1, which improves the mixing effect and efficiency, and avoids splashing when the material enters the tank 1, and avoids the material sticking to the top of the tank 1, causing scale and other adverse effects.

[0026] The tank 1 is equipped with a stirring assembly, which includes a vertical rotating shaft. The top of the vertical rotating shaft extends out of the tank 1 and is connected to a stepper motor 4. A vertical stirring rod 3 is connected to the vertical rotating shaft inside the tank 1 via a horizontal rod. The stepper motor 4 drives the stirring assembly to rotate, thereby stirring the material inside the tank 1 and improving mixing efficiency.

[0027] The vertical stirring rod 3 is located below the cloth ring 8. The inner diameter of the lower end of the cloth ring 8 is larger than the inner diameter of the upper end of the cloth ring 8. One side of the discharge port is connected to the inner wall of the tank (e.g., Figure 1 (As shown in the diagram). The discharge port 9 on the fabric ring 8 allows the material to fall along the inner wall of the tank 1, avoiding splashing and further reducing the probability of material splashing onto the top of the tank 1.

[0028] The lower end of the discharge pipe 5 is equipped with a switch valve three, and the return pipe 6 is connected to the discharge pipe 5 above the switch valve three. During operation, the switch valve three is closed and the material pump 7 is started, which can draw the material at the bottom of the tank 1 into the return pipe 6 and re-enter the tank 1 from the upper side wall of the tank 1. This does not affect the discharge and return flow, while reducing the number of openings on the tank 1.

[0029] During operation, a slurry of tungsten carbide powder, cobalt powder, and alcohol enters the tank 1 through the inlet pipe 13. Under the action of the feeding ring 8, material splashing is reduced, and the materials are stirred in the tank 1 to achieve mixing and ball milling. During the ball milling process, under the action of the feed pump 7, the material at the bottom of the tank 1 can enter the feeding ring 8 through the return pipe 6 and re-enter the tank 1 from the discharge port 9, which accelerates the circulation of materials, improves the uniformity of material ball milling, and is conducive to improving the ball milling effect and efficiency. At the same time, it avoids splashing when the material enters the tank 1 and prevents the material from sticking to the top of the tank 1, causing scale and other adverse effects.

[0030] Example 2

[0031] like Figures 2-4 As shown, this utility model provides a tungsten carbide powder feeding device, including a tank body 1. The tank body 1 is provided with a feed pipe 2 and a discharge pipe 5. The discharge pipe 5 is provided with a return pipe 6. The return pipe 6 is provided with a material pump 7, which is a pneumatic diaphragm pump. The tank body 1 is provided with a material distribution ring 8, which is fixedly connected to the inner wall of the upper part of the tank body 1. The central axis of the material distribution ring 8 coincides with the central axis of the tank body 1. The material distribution ring 8 is connected to a liquid inlet pipe 13, which is connected to the return pipe 6. The end of the return pipe 6 connected to the liquid inlet pipe 13 is provided with a first switch valve. The liquid inlet pipe is provided with a second switch valve near the return pipe. The lower surface of the material distribution ring 8 has multiple discharge ports 9 evenly distributed circumferentially. Under the action of the material pump 7, the material at the bottom of the tank 1 can enter the material distribution ring 8 through the return pipe 6, and then enter the tank 1 again through the discharge port 9, falling down along the inner wall of the tank 1, which improves the mixing effect and efficiency, and avoids splashing when the material enters the tank 1, and avoids the material sticking to the top of the tank 1, causing scale and other adverse effects.

[0032] The tank 1 is equipped with a stirring assembly, which includes a vertical rotating shaft. The top of the vertical rotating shaft extends out of the tank 1 and is connected to a stepper motor 4. A vertical stirring rod 3 is connected to the vertical rotating shaft inside the tank 1 via a horizontal rod. The stepper motor 4 drives the stirring assembly to rotate, thereby stirring the material inside the tank 1 and improving mixing efficiency.

[0033] A bevel gear 10 is fixed on a vertical rotating shaft located outside the tank 1. The bevel gear 10 meshes with a bevel gear 11, which is connected to the output shaft of a stepper motor 4. The horizontal rod is an electric push rod, with its fixed end fixedly connected to the vertical rotating shaft and its telescopic end fixedly connected to a vertical stirring rod 3. A wire channel is provided inside the vertical rotating shaft, coinciding with the central axis of the shaft. Each electric push rod is connected to an electric wire, which passes through the wire channel and connects to an external power source via a conductive slip ring 12. The conductive slip ring 12 allows the electric push rod to extend and retract flexibly while rotating with the vertical rotating shaft. The extension and retraction of the electric push rod adjusts the stirring range of the vertical stirring rod 3, further improving the stirring effect. Simultaneously, when the vertical stirring rod 3 contacts the inner wall of the tank 1, it scrapes the material, preventing it from sticking to the inner wall of the tank 1.

[0034] The vertical stirring rod 3 is located below the cloth ring 8. The inner diameter of the lower end of the cloth ring 8 is larger than the inner diameter of the upper end of the cloth ring 8. One side of the discharge port is connected to the inner wall of the tank (e.g., Figure 4 (As shown in the diagram). The discharge port 9 on the fabric ring 8 allows the material to fall along the inner wall of the tank 1, avoiding splashing and further reducing the probability of material splashing onto the top of the tank 1.

[0035] The lower end of the discharge pipe 5 is equipped with a switch valve three, and the return pipe 6 is connected to the discharge pipe 5 above the switch valve three. During operation, the switch valve three is closed and the material pump 7 is started, which can draw the material at the bottom of the tank 1 into the return pipe 6 and re-enter the tank 1 from the upper side wall of the tank 1. This does not affect the discharge and return flow, while reducing the number of openings on the tank 1.

[0036] During operation, a slurry of tungsten carbide powder, cobalt powder, and alcohol enters the tank 1 through the inlet pipe 13. Under the action of the feeding ring 8, material splashing is reduced, and the materials are stirred in the tank 1 to achieve mixing and ball milling. During the ball milling process, under the action of the feed pump 7, the material at the bottom of the tank 1 can enter the feeding ring 8 through the return pipe 6 and re-enter the tank 1 from the discharge port 9, which accelerates the circulation of materials, improves the uniformity of material ball milling, and is conducive to improving the ball milling effect and efficiency. At the same time, it avoids splashing when the material enters the tank 1 and prevents the material from sticking to the top of the tank 1, causing scale and other adverse effects.

[0037] The embodiments of this utility model have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tungsten carbide powder feeding device, comprising a tank body, wherein the tank body is provided with a feed pipe and a discharge pipe, characterized in that: The discharge pipe is equipped with a return pipe, and the return pipe is equipped with a material pump. The tank body is equipped with a material distribution ring, which is fixedly connected to the inner wall of the tank body. The central axis of the material distribution ring coincides with the central axis of the tank body. The material distribution ring is connected to a liquid inlet pipe, which is connected to the return pipe. The end of the return pipe connected to the liquid inlet pipe is equipped with a switch valve one, and the liquid inlet pipe is equipped with a switch valve two near the return pipe. The lower surface of the material distribution ring has multiple discharge ports evenly distributed circumferentially.

2. The tungsten carbide powder feeding device according to claim 1, characterized in that: The tank is equipped with a stirring assembly, which includes a vertical rotating shaft. The top of the vertical rotating shaft extends out of the tank and is connected to a stepper motor. A vertical stirring rod is connected to the vertical rotating shaft inside the tank via a horizontal rod.

3. The tungsten carbide powder feeding device according to claim 2, characterized in that: A bevel gear is fixed on a vertical rotating shaft located outside the tank. The bevel gear meshes with a second bevel gear, which is connected to the output shaft of a stepper motor. The horizontal rod is an electric push rod. The fixed end of the electric push rod is fixedly connected to the vertical rotating shaft, and the telescopic end of the electric push rod is fixedly connected to a vertical stirring rod. A wire channel is provided inside the vertical rotating shaft. The wire channel coincides with the central axis of the vertical rotating shaft. Each electric push rod is connected to an electric wire. The electric wire passes through the wire channel and is connected to an external power source through a conductive slip ring.

4. The tungsten carbide powder feeding device according to claim 3, characterized in that: The vertical stirring rod is located below the material distribution ring, the inner diameter of the lower end of the material distribution ring is larger than the inner diameter of the upper end of the material distribution ring, and one side of the discharge port is connected to the inner wall of the tank.

5. The tungsten carbide powder feeding device according to claim 1, characterized in that: The lower end of the discharge pipe is equipped with a switch valve three, and the return pipe is connected to the discharge pipe above the switch valve three.

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