Fine powder recovery device of water atomization iron powder dewatering and drying system

Abstract

The utility model belongs to the technical field of powder metallurgy water atomization iron powder recovery, and particularly relates to a fine powder recovery device of a water atomization iron powder dewatering and drying system, which is characterized by comprising iron powder collection modules, and the three iron powder collection modules are arranged between a main air inlet pipe and a gathering exhaust pipe side by side; the iron powder collecting module structure comprises a base, an induction box body, an induction screen, an induction coil and an iron yoke, an exhaust port is formed in the top of the induction box body, an air inlet is connected with an air inlet tee joint through a first flexible pipeline, the exhaust port is connected with an exhaust tee joint through a second flexible pipeline, and the other end of a gathering exhaust pipe is communicated with a main exhaust pipe. And the other end of the exhaust tee joint is connected with an outlet of the air heater. The water-atomized iron powder fine powder recovery device has the advantages of effectively achieving recovery of water-atomized iron powder fine powder, improving the yield, improving the productivity, achieving the dust removal effect, improving the working environment and solving the hardening problem of a cloth bag type dust remover in the powder industry. A conventional cloth bag is omitted, so that the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder metallurgy water atomization iron powder recovery, in particular to a fine powder recovery device of a water atomization iron powder dehydration and drying system. Background Art

[0002] After the water-atomized iron powder is dehydrated and dried, there will always be a part of fine powder (size <45μm) that will be sucked away by the dust removal system during the transportation process. The existing dust removal system in the water-atomized iron powder production process often uses bag dust removal. However, since a large amount of water vapor will be generated during the dehydration and drying process, and the water vapor will enter the bag dust removal system through the pipeline, when the outdoor temperature is lower than 15℃ or the temperature difference between morning and evening is large, the bag will be hardened by the water vapor, and the dust removal equipment will lose its original effectiveness, increasing the frequency of bag replacement and increasing costs.

[0003] After research and utilizing the physical properties of iron powder, an electromagnet method was used to add an electromagnet group to the fan pipeline through design to recover the iron powder, thus realizing the composition of an automatic iron powder collection system and a gas pipeline electromagnetic iron powder collection machine.

[0004] During operation, two excitation machines collect iron powder, and one stops excitation to unload iron powder. The three devices automatically work alternately through program control, thus achieving the effect of iron powder recovery. Utility Model Content

[0005] The purpose of the utility model is to provide a fine powder recovery device for a water-atomized iron powder dehydration and drying system, which overcomes the shortcomings of the prior art, realizes the recovery of water-atomized iron powder fine powder, improves the recovery rate and production capacity, reduces costs, achieves dust removal effects, improves the working environment, and solves the problem of compaction of bag-type dust collectors in the powder industry.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] A fine powder recovery device for a water-atomized iron powder dehydration and drying system, characterized in that it comprises an iron powder collection module, wherein three iron powder collection modules are arranged side by side between a main air intake pipe and a collection exhaust pipe, and when working normally, any two iron powder collection modules are powered on and working, and the other iron powder collection module is powered off and unloaded; the iron powder collection module structure comprises a base, an induction box, an induction screen, an induction coil and an iron yoke, the induction box is arranged on the base, an exhaust port is arranged on the top of the induction box, and an air inlet is arranged on the bottom, the air inlet is connected to an air intake tee through a flexible pipe 1, one end of the air intake tee is connected to the main air intake pipe through a pipeline and a first electric valve, and the other end of the air intake tee is connected to an iron outlet pipe through a pipeline and a second electric valve; the exhaust port is connected to an exhaust tee through a flexible pipe 2, one end of the exhaust tee is connected to one end of the collection exhaust pipe through a third electric valve, the other end of the collection exhaust pipe is connected to the main exhaust pipe, and the other end of the exhaust tee is connected to the outlet of a hot air blower; the main air intake pipe and the main exhaust pipe are connected through a pipeline and a fourth electric valve.

[0008] Furthermore, the iron yoke is connected to the inner wall of the induction box, and an induction coil is arranged between the iron yoke and the induction screen arranged in the center.

[0009] Furthermore, the induction box is provided with a vibration motor.

[0010] Furthermore, the mesh size of the induction screen is 6-8 mm×6-8 mm.

[0011] Furthermore, at least one of the first electric valve, the second electric valve, the third electric valve, and the fourth electric valve is a butterfly valve.

[0012] Furthermore, the excitation circuit of the electromagnetic coil is electrically connected to the controller.

[0013] Furthermore, the flexible pipe 1 and the flexible pipe 2 are made of flexible rubber pipes or waterproof cloth pipes, and are connected to corresponding pipelines through clamps.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1) It can effectively realize the recovery of water-atomized iron powder fine powder, improve the recovery rate and increase production capacity, realize dust removal effect, improve the working environment, and solve the problem of bag-type dust collector caking in the powder industry. 2) The device can realize the recovery effect of fine powder (<45μm), improve the recovery rate of iron powder, eliminate conventional bags, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 yes Figure 1Left side view, main intake pipe connection example 1;

[0018] Figure 3 yes Figure 1 The left side view of the main intake pipe connection example 2, wherein the iron powder collection module is a partial cross-sectional view;

[0019] In the figure: 1-main exhaust pipe; 2-collecting exhaust pipe; 3-iron powder collection module; 4-main air inlet pipe; 5-base; 6-hot air blower; 7-induction box; 8-induction screen; 9-induction coil; 10-iron yoke; 11-exhaust port; 12-air inlet; 13-flexible pipe one; 14-air inlet three-way; 15-first electric valve; 16-second electric valve; 17-flexible pipe two; 18-exhaust three-way; 19-third electric valve; 20-fourth electric valve; 21-vibration motor; 22-iron outlet pipe. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the specific embodiments required to be used in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some implementation methods of the utility model. For ordinary technicians in this field, other specific embodiments can be obtained based on these specific embodiments without paying creative work.

[0022] The components of the embodiments of the present invention generally described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the utility model claimed, but only represents the selected embodiments of the utility model.

[0023] See Figure 1-3, is a schematic structural diagram of an embodiment of a fine powder recovery device of a water atomization iron powder dehydration and drying system of the utility model, including an iron powder collection module 3, three iron powder collection modules 3 are arranged side by side between the main air intake pipe 4 and the collective exhaust pipe 2, and during normal operation, any two iron powder collection modules 3 are powered on and working, and the other iron powder collection module 3 is powered off and unloaded, and the three groups of iron powder collection modules 3 work alternately through the automatic program of the control cabinet. The structure of the iron powder collection module 3 includes a base 5, an induction box 7, an induction screen 8, an induction coil 9 and an iron yoke 10. The induction box 7 is arranged on the base 5. An exhaust port 11 is provided on the top of the induction box 7, and an air inlet 12 is provided on the bottom. The air inlet 12 is connected to an air inlet tee 14 through a flexible pipe 13. One end of the air inlet tee 14 is connected to the main air inlet pipe 4 through a pipeline and a first electric valve 15, and the other end of the air inlet tee 14 is connected to an iron outlet pipe 22 through a pipeline and a second electric valve 16; the exhaust port 11 is connected to an exhaust tee 18 through a flexible pipe 2 17, one end of the exhaust tee 18 is connected to one end of the aggregate exhaust pipe 2 through a third electric valve 19, the other end of the aggregate exhaust pipe 2 is connected to the main exhaust pipe 1, and the other end of the exhaust tee 18 is connected to the outlet of the hot air blower 6; the main air inlet pipe 4 and the main exhaust pipe 1 are connected through a pipeline and a fourth electric valve 20.

[0024] The iron yoke 10 is connected to the inner wall of the induction box 7. An induction coil 9 is arranged between the iron yoke 10 and the induction screen 8 arranged in the center. The excitation circuit of the electromagnetic coil 9 is electrically connected to the controller. A vibration motor 21 is arranged on the induction box 7. The mesh size of the induction screen 8 is 6mm×8mm. The first electric valve 15, the second electric valve 16, the third electric valve 19, and the fourth electric valve 20 are all butterfly valves.

[0025] The materials of the flexible pipe 1 13 and the flexible pipe 2 17 are flexible rubber pipes or waterproof cloth pipes, and are connected to corresponding pipelines through clamps.

[0026] In the embodiment, during the iron absorption process: the electromagnetic coil 9 is supplied with direct current (the AC 380V is rectified into DC 220V through the matching rectifier control cabinet), and the induction screen 8 generates a strong magnetic field. When the gas passes through the induction screen 8, the iron powder in the gas will be adsorbed on the induction screen 8.

[0027] During the iron unloading process: when the direct current to the electromagnetic coil 9 stops, the magnetic field on the induction screen 8 will disappear immediately, and the iron powder on the induction screen 8 will fall off due to the vibration of the vibration motor 21, thereby achieving the purpose of iron unloading.

[0028] In the embodiment, all pipes must be firmly installed and insulated. The installation platform must be designed with maintenance stairs and maintenance platforms, and a simple rainproof shed must be built for the equipment. The iron discharge port is suitable for on-site hanging bag installation, which is convenient for material connection and forklift transportation. Power supply and compressed air source are provided on site.

[0029] The parameters of a single iron powder collection module are: induction screen magnetic field 10000Gs, inlet / outlet pipe DN350mm (inlet pressure 0.02MPa, temperature ≤120℃), working chamber φ500mm, excitation power 9kw, vibration motor power 2×0.25kw, hot air blower power 5Kw (air supply temperature adjustable within 120℃ range).

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fine powder recovery device for a water atomization iron powder dehydration and drying system, It is characterized in that It includes an iron powder collection module, and three iron powder collection modules are arranged side by side between the main intake pipe and the collective exhaust pipe. During normal operation, any two iron powder collection modules are powered on and the other iron powder collection module is powered off to unload powder; The iron powder collection module structure includes a base, an induction box, an induction screen, an induction coil and an iron yoke. The induction box is arranged on the base, an exhaust port is arranged on the top of the induction box, and an air inlet is arranged on the bottom. The air inlet is connected to an air inlet tee through a flexible pipe 1, one end of the air inlet tee is connected to the main air inlet pipe through a pipeline and a first electric valve, and the other end of the air inlet tee is connected to an iron outlet pipe through a pipeline and a second electric valve. The exhaust port is connected to the exhaust tee through flexible pipe 2, one end of the exhaust tee is connected to one end of the collective exhaust pipe through the third electric valve, the other end of the collective exhaust pipe is connected to the main exhaust pipe, and the other end of the exhaust tee is connected to the outlet of the hot air blower; the main air inlet pipe and the main exhaust pipe are connected through a pipeline and a fourth electric valve.

2. According to claim 1, a fine powder recovery device for a water atomization iron powder dehydration and drying system, It is characterized in that The iron yoke is connected to the inner wall of the induction box, and an induction coil is arranged between the iron yoke and the induction screen arranged in the center.

3. According to claim 1, a fine powder recovery device for a water atomized iron powder dehydration and drying system, It is characterized in that The induction box is provided with a vibration motor.

4. The fine powder recovery device of the water atomization iron powder dehydration and drying system according to claim 1, It is characterized in that The mesh size of the induction screen is 6-8 mm×6-8 mm.

5. The fine powder recovery device of the water atomization iron powder dehydration and drying system according to claim 1, It is characterized in that At least one of the first electric valve, the second electric valve, the third electric valve, and the fourth electric valve is a butterfly valve.

6. The fine powder recovery device of the water atomization iron powder dehydration and drying system according to claim 1, It is characterized in that The excitation circuit of the induction coil is electrically connected to the controller.

7. The fine powder recovery device of the water atomization iron powder dehydration and drying system according to claim 1, It is characterized in that The flexible pipe 1 and the flexible pipe 2 are made of flexible rubber pipes or waterproof cloth pipes, and are connected to corresponding pipelines through clamps.

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