Metallurgy powder dust removal device

Abstract

The utility model discloses a metallurgical powder dust removal device which comprises a dust removal frame, a blanking box is arranged on the dust removal frame, a transverse conveying mechanism is arranged at the bottom of the blanking box in a communicated mode, blades of a feeding screw on the conveying mechanism are thickened, heating pipes are laid in the blades, the discharging end of the conveying mechanism is connected with a wind raising mechanism, and an air outlet of the wind raising mechanism is in butt joint with a discharging pipe upwards. An air inlet of the wind raising mechanism communicates with a hot air system. The semi-circular baffle is arranged to control the conveying amount of powder and slow down the conveying speed, the semi-circular baffle is matched with a transverse conveying route, it is guaranteed that the powder and feeding screw blades have sufficient heating time, and static electricity carried by the powder is removed in a heating mode; by arranging the heating pipe ring, heat loss in the hot air conveying process is made up, static electricity is further removed to a certain extent through contact of hot air and powder, the powder and dust are separated in a blowing mode, dust removal and static electricity removal are combined, and the redundant workshop area is not occupied.

Description

Technical Field

[0001] The utility model relates to the technical field of metal powder metallurgy, and more specifically, to a metallurgical powder dust removal device. Background Art

[0002] Powder metallurgy is a process that produces metal powders or uses metal powders as raw materials, forming and sintering them to create metal materials, composite materials, and various other products. Powder metallurgy generally consists of four steps: powder preparation, compaction, sintering, and post-processing. Powder preparation involves the production, mixing, and processing of powders, transforming metals, alloys, and metal compounds from solid, liquid, or gaseous states into a powder state. Methods typically used include mechanical pulverization, electrochemical corrosion, redox substitution, salt baths, and atomization.

[0003] However, judging from the current quality inspection of powder metallurgy products, the finished products will have undesirable conditions such as uneven quality distribution, many molding burrs, and agglomerates and protrusions. After eliminating unstable factors, it can be basically concluded that the fluidity, dispersion, and integrity are significantly deteriorated due to the large amount of static electricity carried by the powder, which ultimately affects product quality and production efficiency.

[0004] There are three ways to eliminate static electricity from powders: installing an ionizer or grounding the metal powder, increasing the humidity in the workshop, and increasing the temperature. Given limited workshop space, it's often not feasible to add additional equipment to address these issues. Therefore, existing equipment needs to be modified to include static elimination capabilities. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a metallurgical powder dust removal device to solve one or more of the above problems.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A metallurgical powder dust removal device includes a dust removal frame, a blanking box is provided on the dust removal frame, a horizontal feeding mechanism is connected to the bottom of the blanking box, the blades of the feeding screw on the feeding mechanism are thickened and a heating tube is laid flat inside, the discharge end of the feeding mechanism is connected to a wind lifting mechanism, the air outlet of the wind lifting mechanism is connected to the discharge pipe upward, and the air inlet of the wind lifting mechanism is connected to a hot air system.

[0008] Furthermore, the material feeding mechanism includes a accommodating box, a material feeding motor, a material feeding straight pipe and a material inlet box. The accommodating box is arranged on the dust removal frame. The accommodating box is a horizontally placed round-bottom hopper structure. The material feeding motor is provided at one end of the accommodating box. The feeding screw is provided in the accommodating box. The feeding screw is connected to the material feeding motor through a transmission part passing through the accommodating box. The other end of the accommodating box is connected to the material feeding straight pipe, and the material feeding straight pipe is also connected to the material inlet box. The bottom of the material inlet box is connected to the wind lifting mechanism.

[0009] Furthermore, the feeding screw also penetrates into the material transfer straight pipe, and a semicircular baffle is provided at one end of the material transfer straight pipe connected to the material introduction box, and the semicircular baffle is provided at the lower half of the opening of the material introduction box.

[0010] Furthermore, the wind lifting mechanism includes a blower, an air supply duct and an air outlet pipe joint. The blower is arranged on the dust removal rack, the air supply duct is laid on the dust removal rack, one end of the air supply duct is connected to the blower, and the other end of the air supply duct is connected to the air outlet pipe joint, and the air outlet pipe joint is arranged upward.

[0011] Furthermore, the air supply duct is arranged in a winding manner, at least one section of a heating tube ring is provided outside the air supply duct, and the top end of the last section of the air supply duct is connected to the material transfer mechanism.

[0012] Furthermore, the pipe walls of the end section of the air supply duct and the air outlet pipe joint connected to the material transfer mechanism are both thickened, and the heating pipe ring is arranged in the conventional section of the air supply duct.

[0013] Furthermore, the dust removal frame is erected off the ground, and a guardrail is provided on the main body of the dust removal frame.

[0014] Furthermore, the blanking box is an inverted cone structure, and the side wall of the lower end of the blanking box is provided with a plurality of emergency discharge ports connected to the interior thereof, and the emergency discharge ports are arranged obliquely downward.

[0015] In summary, the present invention has the following beneficial effects:

[0016] 1. The semicircular baffle is set to control the powder transmission amount, slow down the transmission speed, and match the horizontal transmission route to ensure that the powder and the feeding screw blades have sufficient heating time, thereby removing the static electricity on the powder through heating;

[0017] 2. By setting up a heating tube ring, the heat loss during the hot air transportation process is compensated, and the static electricity is further removed to a certain extent through the contact between the hot air and the powder. The powder and dust are separated by blowing, combining dust removal and static electricity removal without occupying extra workshop area. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0019] Figure 2 A structural cross-sectional view of an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the arrangement of a semicircular baffle in an embodiment provided by the utility model.

[0021] In the figure: 10, dust removal rack; 11, guardrail; 20, blanking box; 21, emergency discharge port; 30, feeding mechanism; 31, feeding screw; 32, accommodating box; 33, feeding motor; 34, feeding straight pipe; 35, feeding box; 36, semicircular baffle; 40, air lifting mechanism; 41, fan; 42, air supply duct; 43, air outlet pipe joint; 44, heating pipe ring. DETAILED DESCRIPTION

[0022] Example:

[0023] The following is combined with Figure 1-3 The utility model is described in further detail.

[0024] Metallurgical powder dust removal equipment, such as Figure 1 As shown, the main dust removal frame 10 is divided into three parts: the upper part is used to install the blanking box 20, the middle part is set up as a platform for installing pipes or motors, and the lower part is used to suspend the platform. The dust removal frame 10 is reinforced by guardrails 11 around the installation height of the blanking box 20.

[0025] The blanking box 20 is an inverted cone funnel structure as a whole. The side wall near the bottom of the blanking box 20 is provided with multiple emergency discharge ports 21 connected to the interior. The emergency discharge ports 21 are set obliquely downward for emergency discharge when the internal powder is blocked or excessive.

[0026] like Figure 2 As shown, the bottom of the blanking box 20 is provided with a feeding mechanism 30 connected thereto. The feeding mechanism 30 includes a feeding screw 31, a receiving box 32, a feeding motor 33, a feeding straight pipe 34 and a material introduction box 35. The receiving box 32 is removed from the top and connected to the opening at the bottom of the blanking box 20 for sealing. The receiving box 32 is a horizontally placed round-bottomed hopper structure. A feeding motor 33 is provided at the left end of the receiving box 32. The feeding motor 33 is equipped with conventional extension components such as a reduction gearbox. The feeding motor 33 is assumed to be on the platform of the dust removal rack 10. A horizontally arranged feeding screw 31 is provided in the receiving box 32. As shown Figure 3As shown, the feed screw 31 is connected to the feed motor 33 via a transmission member extending through the left side of the accommodating box 32. A feed pipe 34 is connected to the right end of the accommodating box 32. This pipe 34 also connects to a feed box 35. A semicircular baffle 36 is installed at the connection between the feed pipe 34 and the feed box 35. This baffle 36 is located at the lower half of the opening of the feed box 35, creating a bottom-blocking, top-opening structure. The feed screw 31 extends into the feed pipe 34. Its blades are thickened and house a flat heating tube. The bottom of the feed box 35 is connected to a ventilation mechanism 40.

[0027] The air lifting mechanism 40 includes a blower 41, an air supply duct 42, and an air outlet pipe joint 43. The blower 41 is installed on the platform of the dust removal rack 10, and the air supply duct 42 is also laid on the platform of the dust removal rack 10. One end of the air supply duct 42 is connected to the hot air system with the blower 41, and the other end of the air supply duct 42 is connected to the air outlet pipe joint 43. The air outlet pipe joint 43 is set upward and subsequently connected to the discharge pipe. The air supply duct 42 is divided into a front section and a terminal section. The terminal section is connected to the feed box 35, and the terminal section is connected to the air outlet pipe joint 43. The pipe wall thickness of the front section and the terminal section of the air supply duct 42 is different. The front section of the air supply duct 42 is a conventional section with a smaller wall thickness than the terminal section. The front section of the air supply duct 42 is arranged in a winding manner, and at least one heating pipe coil 44 is added to this section to compensate for the heat loss of the air supply in the hot air system.

[0028] Unprocessed powder falls from the blanking box 20 into the storage box 32, and the feeding screw 31 rotates driven by the transmission parts and the feeding motor 33, feeding horizontally, transferring the powder from the storage box 32 to the feeding straight pipe 34, and feeding it into the feed box 35 from the gap of the semicircular baffle 36, and then falls from the feed box 35 into the air supply duct 42, blown away by the hot air flow and discharged from the air outlet interface. A heating tube is provided on the blades of the feeding screw 31, and the powder is heated by means of a slow transmission process, which can effectively remove static electricity and evenly mix the powder, making it convenient for subsequent blowing and dust removal. The powder is blown away by means of the wind-lifting mechanism 40 to achieve basic dust removal functions. At the same time, the hot air can further heat the powder to remove static electricity. The equipment removes static electricity while removing dust, and the changes are relatively minor, which has little impact on the workshop and production line.

[0029] It should be noted that this specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A metallurgical powder dust removal device, comprising a dust removal frame (10), characterized in that: The dust removal frame (10) is provided with a blanking box (20), and a horizontally placed feeding mechanism (30) is connected to the bottom of the blanking box (20). The blades of the feeding screw (31) on the feeding mechanism (30) are thickened and a heating pipe is laid flat inside. The discharge end of the feeding mechanism (30) is connected to the wind lifting mechanism (40), and the air outlet of the wind lifting mechanism (40) is connected to the discharge pipe upward, and the air inlet of the wind lifting mechanism (40) is connected to the hot air system.

2. The metallurgical powder dust removal device according to claim 1, characterized in that: The material conveying mechanism (30) includes a accommodating box (32), a material conveying motor (33), a material conveying straight pipe (34) and a material introducing box (35). The accommodating box (32) is arranged on the dust removal frame (10). The accommodating box (32) is a horizontally placed round-bottomed hopper structure. The material conveying motor (33) is provided at one end of the accommodating box (32). The feeding screw (31) is provided in the accommodating box (32). The feeding screw (31) is connected to the material conveying motor (33) through a transmission member passing through the accommodating box (32). The other end of the accommodating box (32) is connected to the material conveying straight pipe (34). The material conveying straight pipe (34) is also connected to the material introducing box (35). The bottom of the material introducing box (35) is connected to the wind lifting mechanism (40).

3. The metallurgical powder dust removal device according to claim 2, characterized in that: The feeding screw (31) also penetrates into the material transfer straight pipe (34), and a semicircular baffle (36) is provided at one end of the material transfer straight pipe (34) connected to the material introduction box (35), and the semicircular baffle (36) is provided at the lower half of the opening of the material introduction box (35).

4. The metallurgical powder dust removal device according to claim 1, characterized in that: The wind-raising mechanism (40) comprises a blower (41), an air supply duct (42) and an air outlet pipe joint (43); the blower (41) is arranged on the dust removal rack (10); the air supply duct (42) is laid on the dust removal rack (10); one end of the air supply duct (42) is connected to the blower (41); the other end of the air supply duct (42) is connected to the air outlet pipe joint (43); and the air outlet pipe joint (43) is arranged upward.

5. The metallurgical powder dust removal device according to claim 4, characterized in that: The air supply duct (42) is arranged in a winding manner. At least one section of a heating pipe ring (44) is provided outside the air supply duct (42). The top end of the end section of the air supply duct (42) is connected to a material conveying mechanism (30).

6. The metallurgical powder dust removal device according to claim 5, characterized in that: The pipe walls of the end section of the air supply pipe (42) and the air outlet pipe joint (43) connected to the material conveying mechanism (30) are both thickened, and the heating pipe ring (44) is arranged in the conventional section of the air supply pipe (42).

7. The metallurgical powder dust removal device according to claim 1, characterized in that: The dust removal frame (10) is erected off the ground, and a guardrail (11) is provided on the main body of the dust removal frame (10).

8. The metallurgical powder dust removal device according to claim 1, characterized in that: The blanking box (20) is an inverted cone structure. The lower side wall of the blanking box (20) is provided with a plurality of emergency discharge ports (21) communicating with the interior thereof. The emergency discharge ports (21) are arranged obliquely downward.

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