Controllable modification device for surface of metal powder

Abstract

The utility model discloses a controllable modification device for the surface of metal powder, and belongs to the field of metal powder preparation. Comprising a base, a supporting rod, a cantilever, a stirring motor, a homogenizing and emulsifying head, a hydraulic lifting device, a metal powder stirring device and a control cabinet, one end of the supporting rod is fixed on the surface of the base; one end of the cantilever is connected with the supporting rod in a sliding manner; the other end of the cantilever is connected with the stirring motor; an output shaft of the stirring motor extends into the metal powder stirring device after being connected with the homogenizing and emulsifying head; the cantilever and the base are connected through a hydraulic lifting device, and sliding of the cantilever on the supporting rod is achieved. The control cabinet is electrically connected with the hydraulic lifting device and the stirring motor respectively; the device can flexibly realize concentric or eccentric emulsification of the homogeneous emulsification head on the metal powder material, and can solve the technical problem of poor modification effect of a modification device in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metal powder preparation field relates to a kind of metal powder surface controllable modification device. BACKGROUND

[0002] Metal powder is widely used in new fields such as electronic materials due to its excellent optical, electrical, magnetic, thermal and mechanical properties. However, the small size effect, quantum size effect, interface and surface effect, and macro quantum tunneling effect of metal powder make it prone to agglomeration in air and liquid medium or easily oxidized. If it is not surface modified, it is difficult to meet the application requirements. Metal powder surface modification refers to coating the surface of ultra-fine metal powder to obtain new physical, chemical and other new functions on the surface of metal particles, thereby greatly improving the dispersibility, surface activity and compatibility with other substances of metal particles, to meet different application requirements. The existing ultra-fine metal powder surface coating modification equipment has the problems of complex structure, inflexible operation, poor controllability in coating process, and unsatisfactory particle modification effect. For example, the powder surface coating efficiency is low in the reaction kettle modification, and the use of high-speed dispersion disc modification will cause local overheating and lead to powder agglomeration. The above powder surface modification process has great limitations. SUMMARY

[0003] The utility model aims at providing a kind of metal powder surface controllable modification device, to solve the technical problems of poor modification effect in prior art modification device.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a kind of metal powder surface controllable modification device, including base, support rod, cantilever, stirring motor, homogenizing emulsification head, hydraulic lifting device, metal powder stirring device and control cabinet;The one end of the support rod is fixed on the surface of base;The one end of the cantilever is slidably connected with support rod;The other end of the cantilever is connected with stirring motor;The output shaft of the stirring motor is connected with homogenizing emulsification head after being inserted into metal powder stirring device;Hydraulic lifting device is connected between the cantilever and base, to realize the sliding of cantilever on support rod;The control cabinet is electrically connected with hydraulic lifting device and stirring motor respectively.

[0006] Further, the one end of the cantilever is connected with support rod by sliding device;The sliding device includes slide rail and sliding block;The slide rail is arranged on support rod;The sliding block is nested on slide rail and is connected with the one end of cantilever.

[0007] Further, the sliding block comprises a first sliding block and a second sliding block; the first sliding block and the second sliding block are respectively nested on the sliding rail, and the first sliding block is located above the second sliding block; the first sliding block is connected with one end of the cantilever; a support square tube is fixedly connected between the second sliding block and the cantilever.

[0008] Further, an included angle between the second sliding block and the support square tube is 30°-45°.

[0009] Further, a sliding height of the sliding block is 0.8-1.5 m.

[0010] Further, the hydraulic lifting device comprises a hydraulic driving device and an oil cylinder; the hydraulic driving device is arranged on the base; one end of the oil cylinder is connected with the base, and the other end of the oil cylinder is connected with the cantilever; the hydraulic driving device and the oil cylinder are connected through an oil pipe; the control cabinet is electrically connected with the hydraulic driving device.

[0011] Further, the hydraulic driving device comprises a hydraulic station, a hydraulic oil output pipe and a hydraulic oil return pipe; the hydraulic station is arranged on the base; the control cabinet is electrically connected with the hydraulic station through a hydraulic driving device power line; the hydraulic station is connected with the side wall of one end of the oil cylinder through the hydraulic oil output pipe; the hydraulic station is connected with the side wall of the other end of the oil cylinder through the hydraulic oil return pipe.

[0012] Further, the control cabinet is electrically connected with the stirring motor through a stirring motor power line.

[0013] Further, the metal powder stirring device is a movable emulsifying pot; the bottom of the movable emulsifying pot is spherical, and a movable device is connected to the outside of the bottom; the pot body of the movable emulsifying pot is a double-layer jacket structure.

[0014] Further, the homogenizing emulsifying head is a rotor eccentric structure, and the shaft sleeve is a suspension shaft structure.

[0015] Compared with the prior art, the metal powder surface controllable modification device has the following beneficial effects:

[0016] The utility model discloses a metal powder surface controllable modification device, because the setting of hydraulic lifting device and metal powder stirring device, can realize concentric or eccentric emulsification of homogenizing emulsifying head to metal powder material flexibly, ensure that metal powder material and surface modifier are full mixed and dispersed without dead angle, through flexible control metal powder surface coating agent kind and quantity, homogenizing emulsifying head linear velocity, emulsification time etc.

[0017] Further, the homogenizing emulsifying head is designed with eccentric rotor, and cooperates with stator to generate super strong mixing force, so that the metal powder material, surfactant, solvent and other materials are subjected to strong mechanical and hydraulic shearing, centrifugal extrusion, liquid layer friction, impact tearing and turbulent flow and other comprehensive actions in the gap between the stator and the rotor, so that the surfactant is uniformly and controllably dispersed and emulsified on the surface of the metal powder instantaneously, the metal powder surface coating is more uniform, more sufficient and more stable, and the homogenizing emulsifying head is especially suitable for coating modification of high-viscosity material in superfine metal powder.

[0018] Further, the homogenizing emulsifying head shaft sleeve is designed as a suspension shaft structure without shaft sleeve, which effectively reduces the wear of the emulsifying head parts, avoids the problems of material jamming and the like, and is suitable for batch continuous production.

[0019] Further, the movable emulsifying pot double-layer jacket is designed to circulate water to adjust the temperature of the material in the emulsifying process, avoid the further agglomeration of the powder caused by excessive speed and overheating of the material in the coating process, and make the metal powder more excellent; the bottom of the emulsifying pot is designed as a spherical shape, and there is no dead angle to ensure that the maximum percentage of the material is subjected to shearing coating. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the metal powder surface controllable modification device of the utility model;

[0021] Wherein: 1-base; 2-supporting rod; 3-slideway; 4-slideway block; 4-1, first slideway block; 4-2, second slideway block; 5-hanging arm; 6-supporting square tube; 7-stirring motor; 8-homogenizing emulsifying head; 9-movable emulsifying pot; 10-control cabinet; 11-hydraulic drive device; 11-1, hydraulic station, 11-2, hydraulic oil output pipe, 11-3, oil cylinder; 11-4, hydraulic oil return pipe; 12-stirring motor power line; 13-hydraulic drive device power line. DETAILED DESCRIPTION

[0022] In order for the personnel in the technical field to better understand the utility model scheme, the technical scheme in the utility model embodiments will be clearly and completely described below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the personnel in the field without creative labor should belong to the protection scope of the utility model.

[0023] It is to be understood that the terms "first", "second", and the like, used in the description and the claims of the present application as well as above-mentioned drawings of the present application are used to differentiate between similar objects, and do not necessarily have to be taken in a literal sense. For example, the terms "first" and "second" are used to distinguish between two steps in a process, two elements in a system, or two units in a device, but do not necessarily have to be taken in a chronological sense. It is to be understood that the data thus used in the description and the claims of the present application are interchangeable under appropriate circumstances, so that the embodiments of the present application described herein can be carried out in other sequences than the one illustrated or described herein. Moreover, the terms "comprising" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, product or apparatus that comprises a list of steps or units not only comprises those steps or units but can include other steps or units not expressly listed or inherent to such process, method, product or apparatus.

[0024] The present application will be further described in detail below with reference to the accompanying drawings:

[0025] The utility model discloses a kind of metal powder surface controllable modification devices, including base 1, support rod 2, cantilever 5, stirring motor 7, homogenization emulsification head 8, hydraulic lifting device, metal powder stirring device and control cabinet 10;Wherein, one end of support rod 2 is vertically fixed on base 1, and the other end is vertically slidably connected with one end of cantilever 5;The other end of cantilever 5 is connected with stirring motor 7;The output shaft of stirring motor 7 and homogenization emulsification head 8 are connected, and homogenization emulsification head 8 is inserted into metal powder stirring device;The hydraulic lifting device is arranged on base 1, for controlling the up and down movement of cantilever 5 on support rod 2, to drive the up and down movement of stirring motor 7;Control cabinet 10 in it and hydraulic lifting device and stirring motor 7 are electrically connected.

[0026] As Figure 1As shown, the cantilever 5 is connected with the supporting rod 2 through a sliding device; the sliding device comprises a sliding rail 3 and a sliding block 4; the sliding block 4 comprises a first sliding block 4-1 and a second sliding block 4-2; the sliding rail 3 is arranged on the supporting rod 2, the first sliding block 4-1 and the second sliding block 4-2 are respectively nested on the sliding rail 3, and the first sliding block 4-1 is located above the second sliding block 4-2; the first sliding block 4-1 is connected with one end of the cantilever 5; a supporting square tube 6 is fixedly connected between the second sliding block 4-2 and the cantilever 5; the hydraulic lifting device comprises a hydraulic driving device 11 and an oil cylinder 11-3; the hydraulic driving device 11 comprises a hydraulic station 11-1, a hydraulic oil output pipe 11-2 and a hydraulic oil return pipe 11-4; the hydraulic station 11-1 is arranged on the base 1; the control cabinet 10 is electrically connected with the hydraulic station 11-1 through a hydraulic driving device power line 13; the hydraulic station 11-1 is connected with the side wall of one end of the oil cylinder 11-3 through the hydraulic oil output pipe 11-2; the hydraulic station 11-1 is connected with the side wall of the other end of the oil cylinder 11-3 through the hydraulic oil return pipe 11-4; the control cabinet 10 is electrically connected with the stirring motor 7 through a stirring motor power line 12; the stirring motor 7 and the hydraulic driving device 11 are controlled through the control cabinet 10.

[0027] Preferably, the metal powder stirring device is a movable emulsifying pot 9; the bottom of the movable emulsifying pot 9 is spherical, and the outer side of the bottom is connected with a movable device; the pot body of the movable emulsifying pot 9 is a double-layer jacket structure, circulating water can pass through, and the material temperature can be adjusted.

[0028] Preferably, the movable emulsifying pot 9 is provided with a handle, which can be moved flexibly during operation, and concentric emulsification or eccentric emulsification can be realized.

[0029] Preferably, the control cabinet 10 and the hydraulic station 11-1 are relatively flexible in position and can be placed nearby.

[0030] Preferably, the inclination angle of the sliding rail 4 and the supporting square tube 6 is 30°~45°.

[0031] Preferably, the sliding height of the sliding rail 4 is 0.8~1.5 m.

[0032] Preferably, the power of the stirring motor 7 is 0.75~1.5 kW.

[0033] Preferably, the material of the homogenizing emulsification head 8 is stainless steel 316L, and the diameter is 90~120 mm.

[0034] Preferably, the homogenizing emulsification head 8 is a high-speed homogenizing emulsification head, the rotor is designed to be eccentric, and the shaft sleeve is a suspension shaft structure.

[0035] The use method of the metal powder surface controllable modification device disclosed by the utility model comprises the following steps:

[0036] S1: the superfine metal powder material is poured into the movable emulsifying pot 9, a certain amount of surfactant and solvent are added, and preliminary stirring and mixing are carried out;

[0037] S2: the homogenizing emulsifying head 8 is inserted into the movable emulsifying pot 9 containing the powder material, the height of the homogenizing emulsifying head 8 is adjusted by adjusting the hydraulic drive device 11, and it is ensured that the homogenizing emulsifying head 8 is completely immersed in the metal powder material and is 50mm-150mm away from the bottom of the movable emulsifying pot 9;

[0038] S3: the stirring motor 7 is started, the motor frequency is adjusted, and the linear speed of the homogenizing emulsifying head 8 is gradually increased, and the linear speed is 10-25m / s adjustable;

[0039] S4: because heat is generated during the emulsification modification of the metal powder material, circulating water needs to be introduced into the jacket of the movable emulsifying pot 9 during the emulsification process, and the temperature of the metal powder material is controlled to be maintained at 10-30℃;

[0040] S5: the high-speed dispersion time is controlled to be 20min-40min, the modified superfine powder slurry is obtained, and the modified superfine metal powder is obtained after drying and airflow crushing treatment.

[0041] The superfine metal powder can be silver powder, copper powder, silver-coated copper powder, nickel powder, palladium powder and the like, the surfactant can be one or more combinations of organic acid, organic alcohol, organic ester and the like, the addition amount of the surfactant is 0.2-0.5% of the weight of the metal powder, and the solvent can be one or more combinations of water, ethanol and isopropanol, and the addition amount of the solvent is 20-50% of the weight of the metal powder.

[0042] The device disclosed by the utility model can be suitable for surface modification of metal powders such as silver powder, copper powder, silver-coated copper powder, nickel powder, silver-coated nickel powder, palladium powder and silver-palladium alloy powder, and by adjusting the types and amounts of surfactants, the linear speed of the homogenizing emulsifying head and the emulsification time, precise modification and controllable modification of the metal powder surface can be realized, and the device has a wide range of applications.

[0043] Example 1

[0044] Put 20 kg of superfine silver powder material into the movable emulsifying pot 9, add 50 g of oleic acid, 0.5 kg of ethanol, and 7.5 kg of deionized water, and then perform preliminary stirring and mixing, then insert the homogenizing emulsifying head 8 into the movable emulsifying pot 9, adjust the height of the homogenizing emulsifying head 8 through the hydraulic drive device 11, ensure that the homogenizing emulsifying head 8 is completely immersed in the material and is 100 mm away from the bottom of the movable emulsifying pot 9, turn on the circulating water to ensure that the inner layer temperature of the movable emulsifying pot 9 is 20℃, turn on the stirring motor 7 and gradually increase the linear speed of the homogenizing emulsifying head 8 to 15 m / s, high-speed dispersion for 40 min, and then 28.05 kg of coated modified superfine silver powder slurry can be obtained, and the above-mentioned superfine silver powder slurry is dried and then subjected to airflow crushing treatment to obtain modified superfine silver powder.

[0045] Example 2

[0046] Put 20 kg of superfine copper powder material into the movable emulsifying pot 9, add 60 g of stearic acid, 0.5 kg of ethanol, and 9.5 kg of deionized water, and then perform preliminary stirring and mixing, then insert the homogenizing emulsifying head 8 into the movable emulsifying pot 9, adjust the height of the homogenizing emulsifying head 8 through the hydraulic drive device 11, ensure that the homogenizing emulsifying head 8 is completely immersed in the material and is 120 mm away from the bottom of the movable emulsifying pot 9, turn on the circulating water to ensure that the inner layer temperature of the movable emulsifying pot 9 is 15℃, turn on the stirring motor 7 and gradually increase the linear speed of the homogenizing emulsifying head 8 to 18 m / s, high-speed dispersion for 20 min, and then 30.06 kg of coated modified superfine copper powder slurry can be obtained, and the above-mentioned superfine copper powder slurry is dried and then subjected to airflow crushing treatment to obtain modified superfine copper powder.

[0047] Example 3

[0048] Put 20 kg of superfine silver-coated copper material into the movable emulsifying pot 9, add 40 g of acetylene glycol polyoxyethylene ether, 0.5 kg of isopropyl alcohol, and 5 kg of deionized water, and then perform preliminary stirring and mixing, then insert the homogenizing emulsifying head 8 into the movable emulsifying pot 9, adjust the height of the homogenizing emulsifying head 8 through the hydraulic drive device 11, ensure that the homogenizing emulsifying head 8 is completely immersed in the material and is 80 mm away from the bottom of the movable emulsifying pot 9, turn on the circulating water to ensure that the inner layer temperature of the movable emulsifying pot 9 is 25℃, turn on the stirring motor 7 and gradually increase the linear speed of the homogenizing emulsifying head 8 to 12 m / s, high-speed dispersion for 25 min, and then 25.54 kg of coated modified superfine silver-coated copper slurry can be obtained, and the above-mentioned superfine silver-coated copper powder slurry is dried and then subjected to airflow crushing treatment to obtain modified superfine silver-coated copper powder.

[0049] The above is only to illustrate the technical idea of the present application, and cannot limit the protection scope of the present application, and any modification made on the basis of the technical scheme according to the technical idea of the present application falls within the protection scope of the claims of the present application.

Claims

1. A device for controllably modifying the surface of a metal powder, characterized by It includes base (1), support rod (2), cantilever (5), stirring motor (7), homogenizing emulsification head (8), hydraulic lifting device, metal powder stirring device and control cabinet (10); one end of the support rod (2) is fixed on the surface of the base (1); one end of the cantilever (5) is slidably connected with the support rod (2); the other end of the cantilever (5) is connected with the stirring motor (7); the output shaft of the stirring motor (7) is connected with the homogenizing emulsification head (8); the metal powder stirring device is arranged below the homogenizing emulsification head (8); the cantilever (5) and the base (1) are connected through the hydraulic lifting device; the control cabinet (10) is electrically connected with the hydraulic lifting device and the stirring motor (7) respectively.

2. The device for controllable modification of metal powder surface according to claim 1, characterized in that, One end of the cantilever (5) is connected with the support rod (2) through the sliding device; the sliding device includes slide rail (3) and sliding block (4); the slide rail (3) is arranged on the support rod (2); the sliding block (4) is nested on the slide rail (3) and connected with one end of the cantilever (5).

3. The device for controllable modification of metal powder surface according to claim 2, characterized in that, The sliding block (4) includes first sliding block (4-1) and second sliding block (4-2); the first sliding block (4-1) and the second sliding block (4-2) are respectively nested on the slide rail (3), and the first sliding block (4-1) is located above the second sliding block (4-2); the first sliding block (4-1) is connected with one end of the cantilever (5); the second sliding block (4-2) and the cantilever (5) are fixedly connected with the support square tube (6).

4. The device for controllable modification of metal powder surface according to claim 3, characterized in that, The included angle between the second sliding block (4-2) and the support square tube (6) is 30°-45°.

5. The apparatus for controllably modifying the surface of a metal powder according to claim 3, wherein The sliding height of the sliding block (4) is 0.8-1.5 m.

6. The apparatus for controllably modifying the surface of a metal powder according to claim 1, wherein The hydraulic lifting device includes hydraulic drive device (11) and oil cylinder (11-3); the hydraulic drive device (11) is arranged on the base (1); one end of the oil cylinder (11-3) is connected with the base (1), and the other end is connected with the cantilever (5); the hydraulic drive device (11) and the oil cylinder (11-3) are connected through the oil pipe; the control cabinet (10) is electrically connected with the hydraulic drive device (11).

7. The device for controllable modification of metal powder surface according to claim 6, characterized in that, The hydraulic drive device (11) includes hydraulic station (11-1), hydraulic oil output pipe (11-2) and hydraulic oil return pipe (11-4); the hydraulic station (11-1) is arranged on the base (1); the control cabinet (10) is electrically connected with the hydraulic station (11-1) through the hydraulic drive device power line (13); the hydraulic station (11-1) is connected with the side wall of one end of the oil cylinder (11-3) through the hydraulic oil output pipe (11-2); the hydraulic station (11-1) is connected with the side wall of the other end of the oil cylinder (11-3) through the hydraulic oil return pipe (11-4).

8. The apparatus for controllably modifying the surface of a metal powder according to claim 1, wherein The control cabinet (10) and the stirring motor (7) are electrically connected through the stirring motor power line (12).

9. The apparatus for controllably modifying the surface of a metal powder according to claim 1, wherein The metal powder stirring device is a movable emulsification pot (9); the bottom of the movable emulsification pot (9) is spherical, and the outside of the bottom is connected with a movable device; the pot body of the movable emulsification pot (9) is a double-layer jacket structure.

10. The apparatus for controllably modifying the surface of a metal powder according to claim 1, wherein The homogenizing emulsification head (8) is a rotor eccentric structure, and the shaft sleeve is a suspended shaft structure.

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