A detachable blowing device for dry grinding and dry separation machine and its assembly method

Abstract

The present invention discloses a detachable blowing device for a dry grinding and dry sorting machine and an assembly method thereof. The blowing device is assembled from a blowing pipe and a blowing port. The blowing pipe is provided with a groove, and the blowing port is arranged in the groove. The blowing port is gap-matched with the blowing pipe, and the two "side faces" and two "end faces" of the blowing port are gap-matched with the two "side faces" and two "end faces" of the blowing pipe groove respectively. The blowing port is a prismatic structure, and two "inclined surfaces" are arranged on it. A blowing slot for blowing air is arranged in the middle of the blowing port. In the detachable blowing device of the present invention, the blowing pipe of the dry grinding and dry sorting machine can be equipped with blowing port accessories of various specifications, and the blowing port accessories of different specifications are processed with different blowing slots, which are suitable for use with different types of magnetic minerals. When sorting a certain material, the blowing port accessories corresponding to the material are selected to achieve the best blowing effect, thereby improving the sorting effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of mineral processing engineering, and relates to a detachable blowing device for a dry grinding and dry separation machine and an assembly method thereof, and in particular to a detachable blowing device and an assembly method thereof, which require blowing of air with a specific wind pressure, wind volume, and wind speed, and require fine-tuning of the blowing position and the blowing spray surface when dry grinding and dry separation are performed on different minerals. Background Art

[0002] Working process of dry grinding and dry separation equipment: magnetic materials are unloaded into the raw ore bin, fall onto the raw ore metering belt scale through the star-shaped unloading valve, are lifted by the bucket elevator, and then sent to the Raymond mill feeding hopper, enter the Raymond mill system through the electromagnetic vibrating feeder for dry grinding, and the powder ore with suitable particle size after dry grinding is loaded into the powder ore bin, and then sent to the dry separation belt conveyor system by the powder ore metering belt scale. When the powdered material moves horizontally with the belt to the "zero field strength" area of ​​the magnetic field, air with a wind speed of 30-40m / s is sprayed on the surface of the material through the blowing pipe, and some non-magnetic particles mixed in the magnetic agglomerated material are blown out of the material surface, and are carried away by the air flow and collected by the collection cover. After that, the material continues to move with the belt into the magnetic field area of ​​the second group of magnets and is selected again; after multiple wind-magnetic joint selections, the magnetic materials can be enriched step by step to produce concentrate. The air blown into the material layer through the blower overflows the material layer and carries a large amount of fine granular materials. When the fluidized fine particles flow through the screen with the air, most of the fine magnetic particles will adsorb each other to form coarser magnetic materials, sink and be bound again by the magnetic system; the positive pressure gas-solid two-phase flow discharged from the screen enters the negative pressure area, flows through the bag collector, collects the tailings powder, and the clean air discharged is pressurized by the exhaust fan and then discharged.

[0003] This set of dry grinding and dry separation equipment can be used to separate different types of iron-containing minerals such as natural magnetite, magnetized roasted ore, blast furnace gas ash, thermal power plant fly ash, metallized materials, etc. For different materials to be selected, the air blower installed on the grille of the dry grinding and dry separation equipment needs to be replaced with the air blower corresponding to the material to change the wind pressure, air volume and wind speed of the high-pressure air ejected from the air blower to achieve the best dry separation effect, such as Figure 1 , Figure 2 shown.

[0004] At present, when the dry grinding and dry sorting machine encounters a change in the selected material, all the blowing pipes need to be removed and replaced with a whole blowing pipe with a nozzle size that is suitable for the selected material. Each blowing pipe is a whole steel pipe put into the machine tool for processing. The processed part is large in size and the processed surface is a curved surface, which makes machining difficult. Summary of the invention

[0005] In view of the above technical problems, an object of the present invention is to provide a detachable blowing device for a dry grinding and dry separation machine and an assembly method thereof.

[0006] The present invention discloses a detachable blowing device for a dry grinding and dry sorting machine, which is assembled from a blowing pipe and a blowing port. The blowing pipe is provided with a groove, and the blowing port is arranged in the groove. The blowing port is gap-matched with the blowing pipe, and two "side faces" and two "end faces" of the blowing port are gap-matched with two "side faces" and two "end faces" of the blowing pipe groove respectively. The blowing port is a prismatic structure with two "inclined surfaces" arranged thereon, and a blowing slot for blowing air is arranged in the middle of the blowing port, and the width, length, inclination angle and opening position of the blowing slot are processed according to the technical and process requirements of dry grinding and dry sorting.

[0007] The two "bevels" on the blowing outlet are coated with glass glue and bonded to the inner wall of the blowing tube. The blowing outlet uses the "bevel" instead of the outer cylindrical surface to contact the inner cylindrical surface of the inner wall of the blowing tube, which not only reduces the difficulty of machine tool processing of the cylindrical surface of the blowing outlet, but also provides storage space for the glass glue, which can better achieve the bonding effect.

[0008] The surfaces of the air blowing port and the blowing slit on the air blowing port are all planar structures, which are convenient for machine tool processing and can achieve high processing accuracy.

[0009] The blowing pipe corresponds to blowing ports of multiple series of blowing slots, and the blowing slots are customized according to the requirements of the dry grinding and dry sorting machine for wind pressure, air volume, wind speed, and blowing position during the blowing process. When the blowing parameters of the dry grinding and dry sorting need to be adjusted, the blowing port of the specific blowing slot is replaced.

[0010] The blowing device is installed in the grille of the dry grinding and dry separation machine, and 3-15 sets of blowing devices are installed in the grille.

[0011] One end of the blowing pipe is a plug, and the other end is an end, and the end is connected to the outlet pipe of the air distribution bag.

[0012] A method for assembling a detachable blowing device for a dry grinding and dry separation machine comprises the following process steps:

[0013] (1) Process a certain specification of the blowing pipe and blowing port, and evenly apply the glass glue on the two "inclined surfaces" of the blowing port;

[0014] (2) Insert the air outlet into the air pipe, align the two "side faces" and two "end faces" of the air outlet with the two "side faces" and two "end faces" of the groove of the air pipe, and push the air outlet into the groove of the air pipe along the radial direction of the air pipe; press the air outlet against the inner wall of the air pipe, so that the two "inclined surfaces" of the air outlet are in contact with the inner cylindrical surface of the inner wall of the air pipe, and the glass glue is stored between the "inclined surface" of the air outlet and the inner cylindrical surface of the inner wall of the air pipe;

[0015] (3) Place the blowing device composed of the blowing port and the blowing pipe on the work surface and wait for the glass glue to solidify naturally. When placing the device, keep the blowing seam of the blowing port vertical to the ground.

[0016] (4) After the glass glue is dried and solidified, the assembled blowing device is installed into the grid of the dry grinding and dry separation machine in sequence;

[0017] (5) Connect the end of the blowing pipe to the outlet pipe of the air distribution bag with a connecting hose;

[0018] (6) After checking that all parts are connected normally, the blower starts running, and high-pressure air enters the air distribution bag from the blower outlet pipe, enters the blowing device through the outlet pipe, and is sprayed out from the blowing gap of the blowing port;

[0019] (7) When selecting different types of materials or the properties of the materials change and the blowing port of a specific blowing seam needs to be replaced, the connecting hose of the blowing device is removed and the blowing port embedded in the groove of the blowing pipe is knocked out;

[0020] (8) Select the air outlet dedicated to the material to be selected from the standardized series of air outlets, install it into the groove of the air pipe according to the above steps, install the connecting hose, and start the dry grinding and dry selection production of another material.

[0021] The beneficial effects of the present invention are:

[0022] 1. In the detachable blowing device of the present invention, the blowing pipe of the dry grinding and dry sorting machine can be equipped with blowing port accessories of various specifications. The blowing port accessories of different specifications are processed with different blowing seams, which are suitable for different types of magnetic minerals. When sorting a certain material, the blowing port accessories corresponding to the material are selected to achieve the best blowing effect, thereby improving the sorting effect.

[0023] 2. The present invention converts the replacement of the entire blow pipe into the replacement of only the blow port, which reduces the difficulty of machine tool processing. The blow port can be heat treated and subjected to various surface treatments separately, and even other non-magnetic metals or non-metallic materials can be used. It can also be manufactured through 3D printing, and even extremely complex designs can be processed and manufactured.

[0024] 3. The surfaces of the blowing port and the blowing seam on the blowing port of the present invention are all flat, which are transformed from the original curved surface into a flat surface, which is convenient for machine tool processing and can obtain high processing accuracy. The blowing port is designed as a prism with a small volume, which reduces the difficulty of machining; the blowing seam can be processed into different shapes and different tapers, thereby improving the blowing effect and facilitating dry grinding and dry selection production operations.

[0025] 4. The air outlet of the present invention adopts a "slant" instead of an outer cylindrical surface to contact the inner cylindrical surface of the inner wall of the air pipe, which not only reduces the difficulty of machining the cylindrical surface of the air outlet by machine tools, but also provides storage space for the glass glue, which can better play a bonding role. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a top view of the original air blowing pipe installed on the grille of the dry grinding and dry separation equipment.

[0027] Figure 2 This is an axonometric view of the original air blowing pipe installed on the grille of the dry grinding and dry separation equipment.

[0028] Figure 3 It is the front view of the blow pipe of the present invention.

[0029] Figure 4 It is an axonometric view of the air outlet of the present invention.

[0030] Figure 5 It is a front view of the air outlet of the present invention.

[0031] Figure 6 It is the left side view of the air outlet of the present invention.

[0032] Figure 7 It is an axonometric view of the detachable blowing device of the present invention.

[0033] Figure 8 It is a left side view of the detachable blowing device of the present invention.

[0034] Fig. 9 It is an axonometric view of the detachable blowing device of the present invention installed on the grid of the dry grinding and dry separation equipment.

[0035] In the figure: 1-original blowing pipe; 2-original blowing outlet; 3-grid; 4-plug; 5-blowing pipe; 6-groove; 7-side of blowing pipe; 8-end face of blowing pipe; 9-blowing outlet; 10-side of blowing outlet; 11-end face of blowing outlet; 12-inclined face of blowing outlet; 13-blowing seam; 14-glass glue. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] like Figure 3-9 As shown, a detachable blowing device for a dry grinding and dry sorting machine is assembled from a blowing pipe 5 and a blowing port 9. A groove 6 is provided on the blowing pipe 5, and the blowing port 9 is arranged in the groove 6. The blowing port 9 is gap-matched with the blowing pipe 5. The two side faces 10 and the two end faces 11 of the blowing port 9 are gap-matched with the two side faces 7 and the two end faces 8 of the groove 6 of the blowing pipe 5 respectively. The blowing port 9 is a prismatic structure with a small volume, which reduces the difficulty of machining. Two inclined surfaces 12 are provided on the blowing port 9. The two inclined surfaces 9 are bonded to the inner wall of the blowing pipe 5 after being coated with glass glue. The blowing port 9 uses the inclined surface 12 instead of the outer cylindrical surface to contact the inner cylindrical surface of the inner wall of the blowing pipe 5, which not only reduces the difficulty of machining the cylindrical surface of the blowing port 9 by machine tools, but also provides storage space for the glass glue 14, which can better achieve the bonding effect.

[0038] A blowing slot 13 for blowing air is provided in the middle of the blowing port 9. The width, length, inclination angle and opening position of the blowing slot 13 are processed according to the technical and process requirements of dry grinding and dry separation. The blowing pipe 8 corresponds to a plurality of series of blowing ports 9 with blowing slots 13. The blowing slots 13 are customized according to the requirements of the dry grinding and dry separation machine for the wind pressure, air volume, wind speed and blowing position during the blowing process. When the blowing parameters of the dry grinding and dry separation need to be adjusted, the blowing port 9 with a specific blowing slot 13 is replaced. All surfaces of the blowing port 9 and the blowing slot 13 are planar structures, which are convenient for machine tool processing and can obtain high processing accuracy. The blowing device is installed in the grille 3 of the dry grinding and dry separation machine, and 9 sets of blowing devices are installed in the grille 3. One end of the blowing pipe 5 is a plug 4, and the other end is an end head, and the end head is connected to the outlet pipe of the air distribution bag.

[0039] The assembly method of the detachable blowing device for the dry grinding and dry separation machine includes the following process steps:

[0040] (1) The blowing pipe 5 and the blowing port 9 are made of 304 stainless steel and are processed on a machine tool. The outer diameter of the blowing pipe 5 is ɸ63mm and the wall thickness is 5mm. The width between the two side faces 7 of the groove 6 is controlled to be 20.00~20.25mm; the width between the two side faces 10 of the blowing port 9 is controlled to be 19.75~20.00mm. After processing, the two inclined surfaces 12 of the blowing port 9 are evenly coated with glass glue 14;

[0041] (2) Insert the air outlet 9 into the air blowing tube 5, align the two side faces 10 and the two end faces 11 of the air outlet with the two side faces 7 and the two end faces 8 of the groove 6 of the air blowing tube 5, and push the air outlet 9 into the groove 6 of the air blowing tube 5 along the radial direction of the air blowing tube 5; press the air outlet 9 against the inner wall of the air blowing tube 5, so that the two inclined surfaces 12 of the air outlet 9 are in contact with the inner cylindrical surface of the inner wall of the air blowing tube 5, and the glass glue 14 is stored between the inclined surface 12 of the air outlet 9 and the inner cylindrical surface of the inner wall of the air blowing tube 5;

[0042] (3) Repeat the above assembly process until the nine sets of blowing devices are assembled. Place the blowing device assembled with the blowing port 9 and the blowing pipe 5 on the work surface and wait for the glass glue 14 to solidify naturally. When placing the blowing device, the blowing seam 13 of the blowing port 9 should be kept vertical to the ground.

[0043] (4) After the glass glue 14 is dried and solidified, the assembled 9 sets of spraying devices are sequentially installed into the grid 3 of the dry grinding and dry separation machine;

[0044] (5) Connect the end of the blowing pipe 5 to the outlet pipe of the air distribution bag with a connecting hose;

[0045] (6) After checking that all parts are connected normally, the blower starts running, and high-pressure air enters the air distribution bag from the blower outlet pipe, enters the blowing device through the 9 outlet pipes, and is ejected from the blowing slit 13 of the blowing port 9;

[0046] (7) When different types of materials are selected or the properties of the materials change and the blowing port 9 of a specific blowing slot 13 needs to be replaced, the connecting hose of the blowing device is removed and the blowing port 9 embedded in the groove 6 of the blowing pipe 5 is knocked out;

[0047] (8) Select a dedicated blowing port 9 for the material to be selected from the standardized series of blowing ports 9, install it into the groove 6 of the blowing pipe 5 according to the above steps, install the connecting hoses in turn, and start the dry grinding and dry selection production of another material.

Claims

1. A method for assembling a detachable blowing device for a dry grinding and dry separation machine, comprising the following process steps: (1) Process a certain specification of the blowing pipe and blowing port, and evenly apply the glass glue on the two "inclined surfaces" of the blowing port; (2) Insert the air outlet into the air pipe, align the two "side faces" and two "end faces" of the air outlet with the two "side faces" and two "end faces" of the groove of the air pipe, and push the air outlet into the groove of the air pipe along the radial direction of the air pipe; press the air outlet against the inner wall of the air pipe, so that the two "inclined surfaces" of the air outlet are in contact with the inner cylindrical surface of the inner wall of the air pipe, and the glass glue is stored between the "inclined surface" of the air outlet and the inner cylindrical surface of the inner wall of the air pipe; (3) Place the blowing device composed of the blowing port and the blowing pipe on the work surface and wait for the glass glue to solidify naturally. When placing the device, keep the blowing seam of the blowing port vertical to the ground. (4) After the glass glue is dried and solidified, the assembled blowing device is installed into the grid of the dry grinding and dry separation machine in sequence; (5) Connect the end of the blowing pipe to the outlet pipe of the air distribution bag with a connecting hose; (6) After checking that all parts are connected normally, the blower starts running, and high-pressure air enters the air distribution bag from the blower outlet pipe, enters the blowing device through the outlet pipe, and is sprayed out from the blowing gap of the blowing port; (7) When selecting different types of materials or the properties of the materials change and the blowing port of a specific blowing seam needs to be replaced, the connecting hose of the blowing device is removed and the blowing port embedded in the groove of the blowing pipe is knocked out; (8) Select the air outlet dedicated to the material to be selected from the standardized series of air outlets, install it into the groove of the air pipe according to the above steps, install the connecting hose, and start the dry grinding and dry selection production of another material; The detachable blowing device is assembled from a blowing pipe and a blowing port, the blowing pipe is provided with a groove, the blowing port is arranged in the groove, the blowing port and the blowing pipe are gap-matched, the two "side faces" and two "end faces" of the blowing port are gap-matched with the two "side faces" and two "end faces" of the blowing pipe groove respectively, the blowing port is a prismatic structure with two "inclined surfaces" thereon, a blowing slot for blowing air is provided in the middle of the blowing port, the width, length, inclination angle and opening position of the blowing slot are processed according to the technical process requirements of dry grinding and dry selection; the surfaces of the blowing port and the blowing slot on the blowing port are both planar structures.

2. The assembly method of the detachable blowing device for the dry grinding and dry separation machine according to claim 1 is characterized in that: The blowing device is installed in the grille of the dry grinding and dry separation machine, and 3-15 sets of blowing devices are installed in the grille.

3. The assembly method of the detachable blowing device for the dry grinding and dry separation machine according to claim 1 is characterized in that: One end of the blowing pipe is a plug, and the other end is an end, and the end is connected to the outlet pipe of the air distribution bag.

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