Magnetic separation device

Abstract

The utility model discloses a magnetic separation device which comprises a support, a screw rod mechanism is arranged above the support, the screw rod mechanism comprises a shell and a variable-diameter spiral, the variable-diameter spiral is arranged in the shell, the screw pitch and the screw diameter of a spiral blade of the variable-diameter spiral are reduced from one side to the other side, a core shaft part of the variable-diameter spiral is hollow, and the hollow part is filled with a magnetic core. A motor for conveying power is arranged on one side of the screw rod mechanism, and an extrusion mechanism for extruding magnetic particles discharged from a slag outlet of the screw mechanism is arranged on the other side of the screw rod mechanism. And the magnetic particles are squeezed and discharged towards the slag outlet.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation equipment, and in particular to a magnetic separation device. Background Technology

[0002] In modern manufacturing, grinding is a common precision machining method, widely used for surface treatment of various mechanical parts. To ensure machining quality and efficiency, a large amount of coolant is typically used during grinding to lower the temperature of the cutting zone, remove chips and residues, and reduce friction between the tool and the workpiece. However, over prolonged use, the coolant gradually accumulates various impurities, especially magnetic particles. These impurities not only affect the surface quality and machining accuracy of the parts but also shorten tool life and reduce overall machining efficiency. Traditional filtration methods are insufficient to effectively remove these small, lightweight, and easily suspended magnetic particles, especially in high-precision machining environments, where residual magnetic particles can lead to serious quality problems.

[0003] While existing magnetic separation devices on the market can adsorb some magnetic particles, the limited magnetic contact area results in weak adsorption forces between particles, causing them to easily redisperse back into the coolant and affecting the adsorption effect. Furthermore, there are two main methods for discharging magnetic particles: one uses rubber rollers, but these rollers wear out easily after a period of use and require regular replacement; the other does not use rubber rollers, which results in the entrainment of a significant amount of grinding fluid when discharging solid particles, leading to waste. Although spiral extrusion technology demonstrates good solid-liquid separation when handling larger particles and produces relatively dry solids, it is less than ideal for separating fine magnetic particles generated during grinding due to the lack of effective magnetic agglomeration. Summary of the Invention

[0004] Purpose of the utility model: The purpose of this utility model is to provide a magnetic separation device that can quickly and effectively aggregate magnetic particles, and improve the drying of the extruded magnetic particles while extruding them.

[0005] Technical solution: The magnetic separation device of this utility model is characterized in that it includes a screw mechanism, the screw mechanism includes a housing and a variable diameter screw with a screw blade disposed inside the housing, the screw pitch and screw diameter decreasing from one side to the other side, the core portion of the variable diameter screw is hollow and the hollow portion is filled with a magnetic core, a motor for conveying power is provided on one side of the screw mechanism, and a pressing mechanism for pressing the magnetic particles discharged from the slag outlet of the screw mechanism is provided on the other side.

[0006] As preferred, the motor is arranged at the end of the variable-diameter screw with the largest helical blade pitch and screw diameter, and the extrusion mechanism is arranged at the end of the variable-diameter screw with the smallest helical blade pitch and screw diameter.

[0007] The rotation of the variable-diameter screw extrudes the magnetic particles adsorbed on the outer wall of the variable-diameter screw inside the shell towards the extrusion mechanism.

[0008] As preferred, the hollow part of the mandrel of the variable-diameter screw is arranged at the side of the variable-diameter screw close to the motor, and the solid part of the mandrel is arranged at the side of the variable-diameter screw close to the extrusion mechanism.

[0009] The magnetic core is arranged in the mandrel at the side of the variable-diameter screw close to the motor, and the structure without the magnetic core at the other side facilitates the magnetic particles not to be continuously adsorbed on the outer wall of the variable-diameter screw at the other side and to be extruded out.

[0010] As preferred, the mandrel of the variable-diameter screw is arranged in parallel with the horizontal plane.

[0011] The arrangement of the mandrel in parallel with the horizontal plane facilitates the dirty liquid to flow from high to low under the influence of gravity.

[0012] As preferred, the bottom of the shell close to the motor is provided with a liquid outlet, and the top of the other side is provided with a liquid inlet.

[0013] The arrangement ensures that the dirty liquid entering the shell from the liquid inlet can contact the variable-diameter screw filled with the magnetic core, thereby improving the adsorption effect of the magnetic particles.

[0014] As preferred, the end surface of the shell close to the motor is a sealing surface, the transmission shaft is arranged through the sealing surface, one end of the transmission shaft is connected with the motor, and the other end of the transmission shaft is connected with the variable-diameter screw; and the slag outlet is arranged on the end surface of the shell close to the extrusion mechanism.

[0015] As preferred, the extrusion mechanism comprises a connecting structure, a limiting plate, a spring and a boss, the limiting plate is connected with the end surface of the shell through the connecting structure, the side of the limiting plate facing the end surface of the shell is connected with the boss through the spring, the boss is matched with the opening of the slag outlet, and the boss closes the slag outlet under the elastic force.

[0016] The spring presses the boss towards the slag outlet through the elastic force, and double pressure is applied to the residue from the slag outlet, so that the liquid in the residue is less.

[0017] As preferred, the connecting structure comprises an adjusting screw and a limiting hole arranged on the outer surface of the shell, the adjusting screw is connected with the limiting hole after penetrating through the limiting plate, and the limiting plate is positioned.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] (1) This utility model uses the magnetic core inside the core shaft of the variable diameter spiral to adsorb magnetic particles in the dirty liquid. The pitch and diameter of the spiral blades in the variable diameter spiral decrease simultaneously, squeezing the magnetic particles toward the slag outlet to dry and discharge them.

[0020] (2) This utility model utilizes an extrusion mechanism to further extrude magnetic particles at the slag outlet to dry the magnetic particles, thereby improving the dryness of the discharged magnetic particles and increasing the utilization rate of the recyclable solution. Attached Figure Description

[0021] Fig. 1 This is a three-dimensional structural diagram of the present invention.

[0022] Fig. 2 This is a three-dimensional structural view of the shell after part of it has been opened in this utility model.

[0023] Fig. 3 This is a cross-sectional view of the variable diameter spiral in this utility model.

[0024] Fig. 4 This is an enlarged view of the slag outlet in this utility model.

[0025] The components are as follows: 100, bracket; 200, screw mechanism; 300, motor; 400, extrusion mechanism; 500, waste residue collection bucket; 201, shell; 202, variable diameter screw; 203, magnetic core; 204, slag outlet; 205, liquid inlet; 206, liquid outlet; 207, liquid storage tank; 208, liquid drain; 301, drive shaft; 401, limiting plate; 402, spring; 403, boss; 404, adjusting screw; 405, limiting hole. Detailed Implementation

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0027] See appendix Figs. 1-4 The figure shows a magnetic separation device of this utility model, which includes a support 100 and a screw mechanism 200 arranged above the support 100. The screw mechanism 200 includes a housing 201 and a variable diameter screw 202 with a screw blade inside the housing whose pitch and diameter decrease from left to right. The left side of the core of the variable diameter screw 202 is a hollow part filled with a magnetic core 203, and the right side is a solid part.

[0028] In this embodiment, a motor 300 is provided on the left side of the screw mechanism 200. The output end of the motor 300 is connected to a transmission shaft 301. The transmission shaft 301 passes through the sealing surface on the left side of the housing 201 and is connected to the variable diameter screw 202, driving the variable diameter screw 202 to rotate.

[0029] In the embodiment, the right extrusion mechanism 400 is arranged on the right side of the screw mechanism 200, and the extrusion mechanism 400 extrudes the magnetic particles discharged from the slag outlet 204 on the end face of the right side shell 201 of the screw mechanism 200.

[0030] In the embodiment, the bottom of the shell 201 on the side close to the motor 300 is provided with the liquid outlet 206, and the top of the other side is provided with the liquid inlet 205, which ensures that the dirty liquid entering the shell 201 from the liquid inlet 205 can contact the variable-diameter spiral 202 filled with the magnetic core 203, thereby improving the effect of adsorbing the magnetic particles.

[0031] In the embodiment, the core shaft of the variable-diameter spiral 202 is arranged in parallel with the horizontal plane, so that the dirty liquid can be fully affected by gravity and flow from high to low.

[0032] In the embodiment, the extrusion mechanism 400 includes a connecting structure, a limiting plate 401, a spring 402, and a boss 403. The limiting plate 401 is connected to the end face of the shell 201 through the connecting structure. The side of the limiting plate 401 facing the end face of the shell 201 is connected to the boss 403 through the spring 402. The boss 403 matches the opening of the slag outlet 204 and closes the slag outlet 204 under the action of the spring.

[0033] In the embodiment, the connecting structure includes an adjusting screw 404 and a limiting hole 405 arranged on the outer surface of the shell 201. The adjusting screw 404 is connected to the limiting hole 405 after passing through the limiting plate 401, thereby positioning the limiting plate 401.

[0034] In the working process of the embodiment, the dirty liquid enters the shell 201 through the liquid inlet 205 at the top of the shell 201. Under the action of gravity, the dirty liquid flows from the liquid inlet 205 to the liquid outlet 206. In this process, the magnetic particles in the dirty liquid are adsorbed on the outer wall of the variable-diameter spiral 202 having magnetism. With the rotation of the variable-diameter spiral 202 and the accumulation of more and more magnetic particles adsorbed on the outer wall of the variable-diameter spiral 202 having magnetism, the magnetic particles on the outer wall of the variable-diameter spiral 202 are pushed in the direction of the slag outlet 204. When the accumulated magnetic particles move from the magnetic end to the non-magnetic end, the magnetic particles fall off from the variable-diameter spiral 202, fall into the shell 201, and continue to move to the slag outlet 204 under the driving of the variable-diameter spiral 202.

[0035] When the slag outlet 204 does not accumulate a large number of magnetic particles, the boss 403 in the extrusion mechanism 400 is closed under the action of the spring 402, when the magnetic particles at the slag outlet 204 accumulate to a certain extent, the magnetic particles continue to move and gather to the slag outlet 204, and exert pressure on the boss 403, when the pressure is not enough to push away the boss 403, the boss 403 exerts a reverse force on the gathered magnetic particles, further squeezing the gathered magnetic particles, when the pressure is enough to push away the boss 403, the gathered magnetic particles are discharged from the slag outlet 204 into the waste slag collecting barrel 500.

[0036] When the magnetic particles are partially discharged, the number of magnetic particles at the slag outlet 204 decreases, the pressure on the boss 403 decreases, so that the boss 403 continues to close the slag outlet 204 under the elastic force of the spring 402.

[0037] In the process of moving the magnetic particles from the magnetic end inside the shell 201 to the slag outlet 204, because the spiral blade is a variable diameter structure, as the magnetic particles increase, the space inside the shell 201 becomes smaller, and the magnetic particles are squeezed, so that the dryness of the magnetic particles moving to the slag outlet 204 increases, and the cooling liquid squeezed out flows out of the liquid outlet 206, when the magnetic particles approach the slag outlet 204, under the action of the extrusion mechanism 400, the double extrusion action on the magnetic particles is finally completed, further improving the dryness of the magnetic particles discharged from the slag outlet 204.

Claims

1. A magnetic separation device, characterized in that: The screw mechanism includes a housing and a variable diameter screw with a screw blade inside the housing. The screw pitch and screw diameter decrease from one side to the other. The core portion of the variable diameter screw is hollow and filled with a magnetic core. A motor for conveying power is provided on one side of the screw mechanism, and an extrusion mechanism for extruding magnetic particles discharged from the slag outlet of the screw mechanism is provided on the other side.

2. The magnetic separation device according to claim 1, characterized in that: The motor is located at the end of the variable diameter spiral blade with the largest pitch and diameter, while the extrusion mechanism is located at the end of the variable diameter spiral blade with the smallest pitch and diameter.

3. The magnetic separation device according to claim 1, characterized in that: The hollow portion of the mandrel of the variable diameter screw is located on the side of the variable diameter screw closer to the motor, while the solid portion of the mandrel is located on the side of the variable diameter screw closer to the extrusion mechanism.

4. The magnetic separation device according to claim 1, characterized in that: The mandrel of the variable diameter spiral is set parallel to the horizontal plane.

5. A magnetic separation device according to claim 1, characterized in that: The variable diameter spiral, which is filled with a magnetic core, has an outlet at the bottom of the housing near the motor and an inlet at the top of the other side.

6. A magnetic separation device according to claim 1, characterized in that: The end face of the housing near the motor is a sealing surface, and a drive shaft runs through the sealing surface. One end of the drive shaft is connected to the motor, and the other end is connected to a variable diameter screw. The slag outlet is located on the end face of the housing near the extrusion mechanism.

7. A magnetic separation device according to claim 1, characterized in that: The extrusion mechanism includes a connecting structure, a limiting plate, a spring, and a boss. The limiting plate is connected to the end face of the housing through the connecting structure. The side of the limiting plate facing the end face of the housing is connected to a boss by a spring. The boss matches the opening of the slag outlet and closes the slag outlet under the action of elastic force.

8. A magnetic separation device according to claim 7, characterized in that: The connection structure includes an adjusting screw and a limiting hole on the outer surface of the housing. The adjusting screw passes through the limiting plate and connects to the limiting hole to position the limiting plate.

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