CN205996194U - Powder passivation equipment and its powder passivation device - Google Patents

Abstract

This utility model is related to powder passivation equipment and its powder passivation device, powder passivation device includes the powder passivation tank being provided with shaft, it is provided with fluid passage in shaft, the spout being connected with described fluid passage is provided with shaft, fluid passage has the import for being connected with corresponding passivator delivery pipe.In this utility model, fluid passage is set in shaft, during use, passivator is directly entered in shaft by the entrance of fluid passage, then spray in powder passivation tank through spout, because spout is directly arranged on shaft, therefore entered directly into the rotary space of shaft by the passivator that spout sprays, improve the contact effect with powder for the passivator in this region.

Description

Powder passivation equipment and its powder passivation device

technical field

The utility model relates to powder passivation equipment and a powder passivation device in the field of powder material processing.

Background technique

Due to the high specific surface area and high surface activity of the powder, during the actual storage and transportation process, it is very easy to absorb gas and generate oxides on the surface of the powder particles, which will affect the physical, chemical and mechanical properties of the powder itself. In order to ensure the performance of the powder and Added value, the surface passivation treatment of powder is an efficient solution.

The powder passivation treatment belongs to a method of powder modification. The existing powder passivation equipment such as a "calcium carbonate powder surface modification equipment" disclosed in Chinese patent CN105860587A, the calcium carbonate powder surface modification equipment includes calcium carbonate Powder mixing and stirring conveying device and calcium carbonate powder surface coating device. The calcium carbonate powder mixing and stirring device mixes calcium carbonate powders of different particle sizes and transports them to the calcium carbonate powder surface coating device. The calcium carbonate powder surface coating device includes settings A powder passivation tank with a stirring shaft. The calcium carbonate powder surface coating device sprays liquid organic matter, that is, a passivating agent, on the calcium carbonate powder and stirs it with a high-speed stirring shaft, so that the organic matter is repeatedly coated on the surface of the calcium carbonate, and the carbonic acid is completely coated. Passivation treatment of calcium powder. The problem with the existing powder passivation equipment is that when the passivator is sprayed into the powder passivation tank, since the stirring shaft has its own turning space, the spray port of the passivating agent can only be set on the side of the stirring shaft. In this way, the powder in the rotating space of the stirring shaft cannot be well mixed with the passivating agent, and a good passivating effect cannot be achieved.

Utility model content

The purpose of this utility model is to provide a powder passivation device that can improve the contact effect of powder and passivator in the rotating space area of the stirring shaft; the purpose of this utility model is also to provide a powder passivation device using the powder passivation device equipment.

In order to solve the above problems, the technical scheme of the powder passivation device in the utility model is:

The powder passivation device includes a powder passivation tank provided with a stirring shaft, a fluid passage is arranged in the stirring shaft, a spout connected to the fluid passage is arranged on the stirring shaft, and the fluid passage has a pipe for connecting with the corresponding passivating agent. Connected imports.

Nozzles are arranged at the nozzles.

The inlet of the fluid passage is provided with a rotary joint to realize connection with the passivating agent delivery pipe.

The bottom of the powder passivation tank is provided with a discharge port, and the lower side of the discharge port is provided with a powder collecting tank.

The stirring shaft includes a main pipe and a branch pipe which is arranged at intervals along the axial direction of the main pipe and extends away from the main pipe. The inner hole of the branch pipe communicates with the inner hole of the main pipe. Set on the corresponding branch pipe.

Each branch pipe extends radially of the main pipe.

Each branch pipe is provided with a plurality of nozzles at intervals along the extension direction of the branch pipe.

The spout is oriented perpendicular to the extension direction of the branch pipe.

A driving motor is arranged beside the powder passivation tank, and the motor shaft of the driving motor is connected with the main pipe through a transmission belt.

The technical scheme of powder passivation equipment in the utility model is:

Powder passivation equipment, comprising a powder passivation device and a passivating agent adding device for adding a passivating agent to a powder passivation tank of the powder passivation device, a powder passivation device, comprising a powder passivation tank provided with a stirring shaft , a fluid channel is arranged in the stirring shaft, a spout connected with the fluid channel is arranged on the stirring shaft, and the fluid channel has an inlet for connecting with a corresponding passivating agent delivery pipe.

Nozzles are arranged at the nozzles.

The inlet of the fluid passage is provided with a rotary joint to realize connection with the passivating agent delivery pipe.

The bottom of the powder passivation tank is provided with a discharge port, and the lower side of the discharge port is provided with a powder collection tank.

The stirring shaft includes a main pipe and a branch pipe which is arranged at intervals along the axial direction of the main pipe and extends away from the main pipe. The inner hole of the branch pipe communicates with the inner hole of the main pipe. Set on the corresponding branch pipe.

Each branch pipe extends radially of the main pipe.

Each branch pipe is provided with a plurality of nozzles at intervals along the extension direction of the branch pipe.

The spout is oriented perpendicular to the extension direction of the branch pipe.

A driving motor is arranged beside the powder passivation tank, and the motor shaft of the driving motor is connected with the main pipe through a transmission belt.

The beneficial effects of the utility model are as follows: in the utility model, a fluid passage is set in the stirring shaft. When in use, the passivating agent directly enters the stirring shaft through the inlet of the fluid passage, and then sprays into the powder passivation tank through the nozzle. The nozzle is directly arranged on the stirring shaft, so the passivating agent ejected from the nozzle directly enters the turning space of the stirring shaft, which improves the contact effect between the passivating agent and the powder in this area.

Description of drawings

Fig. 1 is the structural representation of an embodiment of powder passivation equipment in the utility model;

Fig. 2 is a schematic structural view of the nozzle in Fig. 1 .

detailed description

An embodiment of a powder passivation device is shown in Figures 1-2: it includes a powder passivation device, the powder passivation device includes a powder passivation tank 4 provided with a stirring shaft, and the powder passivation device also includes a A passivating agent adding device for adding passivating agent to the tank. The passivating agent adding device includes a passivating agent replenishing tank 2 arranged vertically, the lower end of the passivating agent replenishing tank is convex spherical, and the bottom of the convex spherical shape is provided with a passivating agent outlet 14 . The upper end of the passivator supply tank is provided with a pressure sensor 16 and an inert gas inlet 12. The inert gas inlet 12 is connected with an inert gas inlet pipe, and the inert gas inlet pipe is provided with a switch valve 13 capable of realizing flow regulation. The passivating agent addition device also includes a controller 1 connected to the pressure sensor sampling connection and the switch valve control connection.

The stirring shaft includes a vertically arranged main pipe 15 and branch pipes 5 arranged at intervals along the axial direction of the main pipe. , the inner holes of each branch pipe 5 and the inner hole of the main pipe together form a fluid passage, and the upper end orifice of the inner hole of the main pipe 15 forms the inlet of the fluid passage. The passivating agent outlet is connected with a passivating agent delivery pipe 11 , and the passivating agent delivery pipe 11 is connected with the inlet of the fluid passage through a rotary joint 10 . On each branch pipe, a plurality of spouts communicating with the inner hole of the branch pipe are arranged at intervals along the extending direction of the branch pipe. pipe and outer nozzle. The power mechanism includes a driving motor 6, the controller is connected with the driving motor, and the motor shaft of the driving motor 6 is connected with the upper end of the main pipe through a transmission belt 7 to drive the main pipe to rotate.

The lower end of the powder passivation tank is provided with a discharge port, and the lower side of the discharge port is provided with a powder collection tank 8 . The use process of this powder passivation equipment is as follows: add the required passivation agent 3 in the passivation agent supply tank in advance, add the powder to be passivated in the powder passivation tank 4, and fill the passivator supply tank with inert The gas makes the passivator supply tank have a certain pressure, which provides power for the delivery of the passivator, and at the same time, the inert gas will not react with the passivator to change the properties of the passivator. The passivating agent enters the powder passivating tank at a certain flow rate and velocity through the passivating agent delivery pipe, the passivating agent flows into the stirring shaft and then enters the powder passivating tank in the form of water droplets and mist through the nozzle, and the surrounding Powder contact reaction. The drive motor drives the stirring shaft through the transmission belt to rotate and stir in the powder passivation tank to increase the reaction contact area between the powder and the passivator. After the powder passivation is completed, stop the ventilation to the passivator supply tank, turn off the drive motor, and collect the powder in the powder passivation tank into the powder collection tank. The flow rate of the passivating agent into the powder passivation tank can be adjusted through the control of the pressure, and the stirring time and stirring speed can be controlled through the control of the drive motor, so as to meet various process requirements, improve the passivation efficiency of the powder surface, and solve the problem of powder passivation. The problem of uneven chemicalization and low efficiency improves production efficiency and saves production costs.

In other embodiments of the present invention: the branch pipe and the main pipe can also be arranged obliquely; the stirring shaft can also adopt a sine wave-shaped stirring shaft structure; the nozzle at the spout can also be omitted; Shaft transmission connection; the power mechanism can also be a magnetic power mechanism that does not contact the stirring shaft and is driven by a magnetic field and the stirring shaft; the controller can also be omitted, and at this time the switch valve and the drive motor can be manually controlled. At this time, the pressure sensor It can be replaced by other mechanical pressure detection components such as pressure gauges; the inert gas inlet pipe may not be used as a part of the passivator adding device, and the on-off valve can be directly installed at the inert gas inlet of the passivator supply tank; the on-off valve It can also be an on-off valve without flow adjustment function; the power mechanism, rotating joint and powder collection tank can also not be used as a part of the powder passivation device. For example, consumers can purchase the powder passivation tank of this powder passivation device. Afterwards, the above-mentioned components are self-assembled; the passivating agent adding device may also not use pneumatic power transmission, such as pumping.

The embodiment of the powder passivation device is shown in Figures 1-2: the structure of the powder passivation device is the same as the powder passivation device described in the above-mentioned embodiments of the powder passivation equipment, and will not be described in detail here.

Claims (10)

1. powder passivation device, including the powder passivation tank being provided with shaft it is characterised in that：It is provided with fluid in shaft Passage, shaft is provided with the spout being connected with described fluid passage, and fluid passage is had for being conveyed with corresponding passivator The import that pipe is connected.

2. powder passivation device according to claim 1 it is characterised in that：Described nozzle is provided with nozzle.

3. powder passivation device according to claim 1 it is characterised in that：The entrance of fluid passage be provided with realization with The swivel that described passivator delivery pipe is connected.

4. powder passivation device according to claim 1 it is characterised in that：The bottom of powder passivation tank is provided with discharging Mouthful, the downside of discharging opening is provided with receipts powder groove.

5. the powder passivation device according to claim 1 ~ 4 any one it is characterised in that：Shaft includes supervisor and edge Supervisor's arm that axially spaced court overhangs away from supervisor direction, the endoporus of arm is connected with the endoporus of supervisor, supervisor's The endoporus of endoporus and arm constitutes described fluid passage, and each spout is respectively arranged on corresponding arm.

6. powder passivation device according to claim 5 it is characterised in that：Each arm radially extends along supervisor's.

7. powder passivation device according to claim 5 it is characterised in that：Each arm sets along the bearing of trend interval of arm It is equipped with multiple described spouts.

8. powder passivation device according to claim 6 it is characterised in that：Spout is towards perpendicular to arm bearing of trend.

9. powder passivation device according to claim 5 it is characterised in that：It is provided with motor by powder passivation tank, The motor shaft of motor is passed through transmission belt and is connected with described supervisor's transmission.

10. powder passivation equipment, including powder passivation device and for add in the powder passivation tank of powder passivation device blunt The passivator adding set of agent it is characterised in that：Powder as described in claim 1 ~ 9 any one for the powder passivation device is blunt Gasifying device.