Dust removal device for discharge port of alloy stock bin

Abstract

The invention discloses an alloy stock bin discharging port dust removal device which comprises a semi-closed cover body, the semi-closed cover body is in a rectangular pyramid frustum shape with an opening in the bottom, a feeding hole used for being communicated with an alloy stock bin discharging port is formed in one side wall of the semi-closed cover body, and a strip-shaped operation hole is formed in the other side wall opposite to the side wall provided with the feeding hole. The semi-closed cover body is also provided with an air suction port for discharging dust in the cover body; the material falling barrel is used for reducing the discharging height, the material falling barrel inclines downwards and is fixedly connected to the side wall, where the feeding hole is located, of the semi-closed cover body, one end of the material falling barrel is communicated with the feeding hole, and the other end of the material falling barrel is suspended in the semi-closed cover body; the manual flashboard opening and closing mechanism is used for opening or closing the suspended end of the material falling barrel, is arranged in the semi-closed cover body and is hinged to the inner wall, provided with the feeding hole, of the semi-closed cover body. The device can effectively capture dust generated in the process that alloy falls into the receiving device from the stock bin, the dust dissipation amount is reduced, and the production environment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metallurgical equipment, in particular to an alloy bin discharge port dust removal device. BACKGROUND

[0002] In the production process of the metallurgical industry, alloy addition is a crucial process link, and its core role is to achieve precise control of the chemical composition of steel by accurately adding specific types and quantities of alloy elements to molten steel, thereby optimizing the mechanical properties, physical properties and use efficiency of steel to meet the strict requirements of material quality in different application scenarios. Generally, alloy materials are stored in special alloy bins in the form of particles or powders, and are discharged quantitatively through the bin bottom discharge port during use and are transported to the smelting equipment by the receiving device.

[0003] However, in the process of discharging alloy from the bin and falling into the receiving device, due to the existence of a certain height difference, the alloy material often impacts the receiving surface at a high speed, and this impact is easy to cause a large amount of dust to be generated and fly. This kind of dust is mainly composed of alloy fine particles, metal oxides and other trace impurities, with fine particle size and strong diffusion, which causes many adverse effects on the production site: first, dust diffusion will seriously pollute the working environment, reduce the air quality in the workshop, and deposit on the surface and internal structure of the equipment, affecting the heat dissipation and insulation performance of electrical components, leading to an increase in equipment failure rate, an increase in maintenance cost, and a significant shortening of the overall service life; second, the inhalable dust suspended in the air poses a serious health threat to the respiratory system of the operator, and long-term exposure to high-concentration dust environment can easily cause occupational lung diseases such as pneumoconiosis, directly endangering the safety and health of personnel.

[0004] At present, although some production sites have taken conventional dust removal measures, such as setting dust collection hoods or ventilation systems, the control effect of the dust source point of the alloy falling into the receiving device and impacting the dust is still not ideal, and there are problems such as low dust capture efficiency and difficulty in suppressing dust. SUMMARY

[0005] Therefore, it is necessary to provide an alloy bin discharge port dust removal device to effectively capture the dust generated during the process of alloy falling from the bin into the receiving device, reduce the amount of dust escaping, and improve the production environment.

[0006] The present application provides an alloy bin discharge port dust removal device, comprising: The semi-closed cover body is a four-pyramid table with an open bottom, one side wall of the semi-closed cover body is provided with a feeding hole for communicating with the alloy bin discharge port, the other side wall opposite to the side wall provided with the feeding hole is provided with a strip-shaped operation hole, and the semi-closed cover body is further provided with an air suction port for discharging dust inside the cover body. The lowering cylinder for reducing the material discharge height is fixedly connected to the side wall of the half-enclosed cover body at the position of the feeding hole, and one end of the lowering cylinder is communicated with the feeding hole and the other end is suspended in the half-enclosed cover body. The manual gate opening and closing mechanism for opening or closing the suspended end of the lowering cylinder is arranged in the half-enclosed cover body and is hinged to the inner wall of the half-enclosed cover body with the feeding hole. The air suction machine is used for sucking the dust in the half-enclosed cover body into the air suction main pipeline or the dust collecting part. The air pipe is connected with the air suction port at one end and connected with the air suction machine at the other end.

[0007] In one embodiment, the manual gate opening and closing mechanism is provided with a gate capable of completely closing the suspended end of the lowering cylinder, a first connecting rod, a second connecting rod and an operating rod. First and second connecting ears are arranged on both sides of the feeding hole in the horizontal direction and are fixedly connected with the inner wall of the half-enclosed cover body. The gate is in the shape of a cuboid, and first and second fixed rods are symmetrically and integrally connected at both ends along the length direction of the gate, one end of the first connecting rod is hinged to the first connecting ear and the other end is fixedly connected with the first fixed rod, one end of the second connecting rod is hinged to the second connecting ear and the other end is fixedly connected with the second fixed rod. One end of the operating rod is axially connected to the end of the second connecting rod away from the second connecting ear, and the other end of the operating rod extends out of the half-enclosed cover body from the strip-shaped operating hole.

[0008] In one embodiment, an extension plate is fixedly connected to the lower wall of the lowering cylinder, and the plane of the extension plate is coplanar with the lower wall of the lowering cylinder.

[0009] In one embodiment, the end face of the suspended end of the lowering cylinder is a vertical face.

[0010] In one embodiment, the operating rod comprises a first pipe segment and a second pipe segment, the first pipe segment is fixedly connected with the second connecting rod, the second pipe segment is fixedly connected with the first pipe segment, and the second pipe segment is inclined downward relative to the first pipe segment.

[0011] In one embodiment, the operating rod is in a hollow structure, and the width of the strip-shaped operating hole is 2mm-5mm larger than the pipe diameter of the operating rod.

[0012] The present application has the following beneficial effects: (1) The half-enclosed cover body is arranged at the material discharge port of the alloy bin, and the air suction machine is used for sucking the dust in the half-enclosed cover body, in the process of discharging the alloy from the bin and falling into the material receiving device, the dust raised into the half-enclosed cover body is sucked out by the air suction machine and concentratedly discharged, which can reduce the dust emission amount and improve the production environment. (2) The present invention uses a lowering cylinder to lower the discharge position of the alloy and reduce the falling height of the alloy, which can reduce the degree and amount of dust emission; (3) The present invention uses a manual gate opening and closing mechanism to open or close the discharge end of the material discharge cylinder, which can be manually controlled in real time according to the discharge demand, and is highly operable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the dust removal device at the discharge port of the alloy silo provided in an embodiment of the present invention; Figure 2 This is a schematic diagram showing the assembly relationship between the manual gate opening and closing mechanism and the side wall where the feed hole of the semi-enclosed cover is located, as provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of the open state of the manual gate opening and closing mechanism provided in an embodiment of the present invention.

[0014] Explanation of reference numerals in the attached drawings: 100, semi-enclosed cover; 110, feed hole; 120, strip-shaped operating hole; 200, material lowering cylinder; 210, extension plate; 300, exhaust fan; 400, air duct; 500, gate; 510, first connecting rod; 520, operating lever; 530, first connecting lug; 540, first fixing rod. Detailed Implementation

[0015] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0016] It should be noted that in the description of this invention, "upper," "lower," "top," "bottom," and orientation or positional relationship are based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0017] In one embodiment, such as Figure 1 As shown, the dust removal device at the alloy hopper discharge port of this embodiment includes: The semi-enclosed cover 100 is a frustum-shaped square pyramid with an open bottom. One side wall of the semi-enclosed cover 100 is provided with a feed hole 110 for communicating with the discharge port of the alloy hopper. The other side wall opposite to the side wall with the feed hole 110 is provided with a strip-shaped operating hole 120. The semi-enclosed cover 100 is also provided with an air intake for discharging dust from inside the cover.

[0018] The semi-closed cover 100 of the embodiment is a quadrangular pyramid platform, the inner space of which is smaller upward, so that dust flying upward can be concentrated, improving the discharge efficiency. The material of the semi-closed cover 100 is a stainless steel alloy plate with high temperature resistance, corrosion resistance and high strength.

[0019] In addition, the alloy transfer vehicle in the embodiment can be matched, and in the discharging process, the distance between the transfer vehicle hopper and the bottom of the semi-closed cover 100 is less than or equal to 10 cm.

[0020] The discharging cylinder 200 for reducing the discharging height is fixedly connected to the side wall of the semi-closed cover 100 at the feeding hole 110 and inclined downward, one end of the discharging cylinder 200 communicates with the feeding hole 110, and the other end is suspended in the semi-closed cover 100.

[0021] The discharging cylinder 200 is inclined downward, which can reduce the alloy discharging position, reduce the impact degree of the receiving surface, and reduce the powder escape rate.

[0022] The manual gate 500 opening and closing mechanism for opening or closing the suspended end of the discharging cylinder 200 is arranged in the semi-closed cover 100 and hinged to the inner wall of the semi-closed cover 100 with the feeding hole 110. The air extractor 300 is used to suck the dust in the semi-closed cover 100 into the main air duct or dust collecting part, the air duct 400 is connected to the air inlet at one end and connected to the air extractor 300 at the other end.

[0023] Specifically, the air extractor 300 in the embodiment is in a normally open state. The air extractor 300 can be connected to the main air duct of the factory area, or a dust collecting box or bag can be connected to the tail of the air extractor 300.

[0024] The alloy bin discharging port dust removal device of the embodiment places the semi-closed cover 100 at the alloy bin discharging port and uses the air extractor 300 to suck the dust in the semi-closed cover 100, in the process of discharging the alloy from the bin and falling into the receiving device, the dust flying into the semi-closed cover 100 is sucked out by the air extractor 300 and concentrated for discharge, which can reduce the amount of dust escaping and improve the production environment.

[0025] In one embodiment, the manual gate 500 opening and closing mechanism is provided with a gate 500 that can completely close the suspended end of the discharging cylinder 200, a first connecting rod 510, a second connecting rod and an operating rod 520.

[0026] In the horizontal direction, the first connecting lug 530 and the second connecting lug are arranged on both sides of the feeding hole 110, and the first connecting lug 530 and the second connecting lug are fixedly connected to the inner wall of the semi-closed cover 100.

[0027] The gate plate 500 is cuboid, and the first fixed rod 540 and the second fixed rod are symmetrically and integrally connected to both ends of the gate plate 500 along the length direction of the gate plate 500, one end of the first connecting rod 510 is hingedly connected to the first connecting lug 530, the other end of the first connecting rod 510 is fixedly connected to the first fixed rod 540, one end of the second connecting rod is hingedly connected to the second connecting lug, the other end of the second connecting rod is fixedly connected to the second fixed rod, one end of the operating rod 520 is axially connected to the end of the second connecting rod away from the second connecting lug, and the other end of the operating rod 520 extends out of the half-enclosed cover body 100 from the strip-shaped operating hole 120.

[0028] In the embodiment, when the gate plate 500 needs to be opened, the operating rod 520 is moved upward in the strip-shaped operating hole 120, and vice versa. In addition, the manual gate plate 500 opening and closing mechanism is used to open or close the discharging end of the descending cylinder 200, which can be randomly and real-timely controlled according to the discharging demand by manual operation, and the operability is strong.

[0029] In one of the embodiments, the lower wall of the descending cylinder 200 is fixedly connected with the extension plate 210, and the extension plate 210 is coplanar with the lower wall of the descending cylinder 200. The extension plate 210 can further buffer the alloy discharging of the descending cylinder 200, thereby further reducing the dust generation amount.

[0030] The end surface of the suspended end of the descending cylinder 200 is a vertical surface, which can ensure that the end surface does not affect the rotation of the gate plate 500 in the process of rotating the second connecting rod by the operating rod 520.

[0031] In one of the embodiments, the operating rod 520 comprises a first pipe segment and a second pipe segment, the first pipe segment is fixedly connected with the second connecting rod, the second pipe segment is fixedly connected with the first pipe segment, and the second pipe segment is downwardly inclined relative to the first pipe segment. The operating rod 520 is a hollow structure, which can reduce the labor intensity of the operator.

[0032] In one of the embodiments, the width of the strip-shaped operating hole 120 is 2mm-5mm larger than the pipe diameter of the operating rod 520, and preferably 2mm. Reducing the size of the strip-shaped operating hole 120 can further reduce the dust emission amount.

[0033] The above-described embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A dust removal device for the discharge port of an alloy silo, characterized in that, include: A semi-enclosed cover (100) is a frustum-shaped quadrangular pyramid with an open bottom. One side wall of the semi-enclosed cover (100) is provided with a feed hole (110) for communicating with the discharge port of the alloy hopper. The other side wall opposite to the side wall with the feed hole (110) is provided with a strip-shaped operating hole (120). The semi-enclosed cover (100) is also provided with an air intake for discharging dust from inside the cover. The material lowering cylinder (200) is used to reduce the material discharge height. The material lowering cylinder (200) is fixedly connected to the side wall of the feed hole (110) of the semi-enclosed cover (100) at an angle downward. One end of the material lowering cylinder (200) is connected to the feed hole (110), and the other end is suspended inside the semi-enclosed cover (100). The manual gate (500) opening and closing mechanism for opening or closing one suspended end of the material drop cylinder (200) is set inside the semi-enclosed cover (100) and is hinged to the inner wall of the semi-enclosed cover (100) having a feed hole (110). The exhaust fan (300) is used to draw dust from inside the semi-enclosed enclosure (100) into the main exhaust duct or dust collection component; Air duct (400), one end of which is connected to the air intake and the other end of which is connected to the exhaust fan (300).

2. The dust removal device for the discharge port of the alloy silo according to claim 1, characterized in that, The manual gate (500) opening and closing mechanism is provided with a gate (500) that can completely close one end of the material drop cylinder (200) that is suspended, a first connecting rod (510), a second connecting rod and an operating rod (520); Along the horizontal direction, a first connecting ear (530) and a second connecting ear are provided on both sides of the feed hole (110), and the first connecting ear (530) and the second connecting ear are fixedly connected to the inner wall of the semi-enclosed cover (100). The gate (500) is rectangular, and a first fixed rod (540) and a second fixed rod are symmetrically and integrally connected at both ends along its length. One end of the first connecting rod (510) is hinged to the first connecting lug (530), and the other end is fixedly connected to the first fixed rod (540). One end of the second connecting rod is hinged to the second connecting lug, and the other end is fixedly connected to the second fixed rod. One end of the operating lever (520) is axially connected to the end of the second connecting rod away from the second connecting ear, and the other end of the operating lever (520) extends out of the semi-enclosed cover (100) from the strip-shaped operating hole (120).

3. The dust removal device for the discharge port of the alloy silo according to claim 2, characterized in that, An extension plate (210) is fixedly connected to the lower wall of the material drop cylinder (200), and the extension plate (210) is coplanar with the lower wall of the material drop cylinder (200) in the plane shown.

4. The dust removal device for the discharge port of the alloy silo according to claim 3, characterized in that, The end face of the suspended end of the material drop cylinder (200) is a vertical surface.

5. The dust removal device for the discharge port of the alloy silo according to claim 4, characterized in that, The operating lever (520) includes a first pipe section and a second pipe section. The first pipe section is fixedly connected to a second connecting rod, and the second pipe section is fixedly connected to the first pipe section. The second pipe section is inclined downward relative to the first pipe section.

6. The dust removal device for the discharge port of the alloy silo according to claim 5, characterized in that, The operating rod (520) has a hollow structure, and the width of the strip-shaped operating hole (120) is 2mm to 5mm larger than the diameter of the operating rod (520).

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