Aggregate exhaust emission disc and pulverizer with emission disc

Abstract

The invention relates to the technical field of crushers, in particular to a material collection and exhaust emission disc and a crusher provided with the emission disc, the material collection and exhaust emission disc comprises a base plate and a plurality of emission flow channels arranged at intervals on the edge of the upper side of the base plate, and the emission flow channels are arranged in the circumferential direction of the base plate; the chassis is in a dish shape with a concave middle part and a high edge. The pulverizer comprises a pulverizing cavity, a gear ring is arranged on the inner wall of the lower portion of the pulverizing cavity, a horizontally-rotating launching disc is arranged in the pulverizing cavity, the launching disc is the collecting and exhausting launching disc, and the launching disc and the gear ring form a pulverizing pair when rotating. When the transmitting disc rotates, materials on the transmitting disc can be transmitted to the gear ring. According to the aggregate exhaust emission disc and the pulverizer provided with the emission disc, the weak pulverizing environment can be weakened in the pulverizing process, generation of ultrafine powder is reduced, the granularity of pulverized materials is more concentrated, the product yield is increased, energy consumption is greatly reduced, and the aggregate exhaust emission disc and the pulverizer provided with the emission disc have the advantages of being simple in structure, practical and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pulverizer, in particular to a kind of aggregate exhaust launch disc and the pulverizer with the launch disc. BACKGROUND

[0002] Impact crushing is a kind of crushing form widely used in crushing industry. Its crushing mechanism is that high-speed rotating crushing disc drives crushing hammer, forming collision, shearing and friction between material and crushing hammer head, toothed plate, and between materials, so as to achieve the purpose of material crushing.

[0003] The crushing process of impact crusher includes strong crushing and weak crushing. As shown in Figure 7 , Figure 8 and Figure 9 , strong crushing is to drive the material to move in the crushing area by high-speed rotation of the crushing disc, and to achieve the purpose of crushing by collision between the crushing vice (including hammer head 24 and second lining plate 25) and the material, and between the materials. Weak crushing is to drive the materials to rub and collide between the particles by vortex airflow, so as to achieve the process of crushing.

[0004] As shown in Figure 7 , Figure 8 and Figure 9 , in the prior art, the impact crusher usually adopts the way of putting airflow classification in the crushing chamber to separate the qualified materials with a certain fineness in time during the crushing process. That is, gas is continuously introduced into the crushing chamber during the crushing process, and usually 1 cubic meter of about 1.2 kg of air carries 0.1-0.3 kg of material. Therefore, the gas participating in the crushing accounts for a very large proportion during the material crushing process. As shown in Figure 7 , Figure 8 and Figure 9 , the high-speed rotating hammer head drives the gas to generate radial vortex and tangential vortex under the action of centrifugal force, which are generated by the impact of the windward surface 26 of the hammer head on the gas and the negative pressure formed by the leeward surface 27 of the hammer head. The resistance and vortex generated by these gas with a very large proportion consume a large amount of energy. The crushed material also participates in the vortex and can achieve a certain crushing effect, but due to the relatively low speed, this crushing is weak crushing. In addition, the material participating in the vortex is usually fine powder or ultrafine powder, which causes over-crushing of the material.

[0005] In actual application, the crushed material requires a concentrated particle size, that is, there is no existence of large particles, and there is also no existence of ultrafine particles. In order to achieve this requirement, it is usually necessary to separate the ultrafine powder, and the separated ultrafine powder has no application value or greatly reduced application value. As can be seen, in many crushing processes, it is not that the finer the material is the better, but the more concentrated the particle size of the material is the better.

[0006] This puts higher technical requirements on the crusher, one is to use an efficient classification system to separate the particles that meet the particle size requirements in time, and the other is to use a crusher without over crushing. To reduce over crushing of the crusher, strong crushing should account for a large proportion and weak crushing should account for a small proportion in the crushing process. Therefore, the gas content of the material in the crushing process and the generation of vortex gas flow should be reduced as much as possible. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a material exhaust launching disc and a crusher provided with the launching disc, which can weaken the weak crushing environment, reduce the generation of superfine powder, make the particle size of the crushed material more concentrated, improve the product yield, and greatly reduce the energy consumption.

[0008] To solve the above problems, the technical scheme adopted by the present application is as follows: A material exhaust launching disc, comprising a bottom disc and a plurality of spaced launching channels arranged on the upper side edge of the bottom disc, the plurality of launching channels being arranged circumferentially along the bottom disc; the bottom disc is disc-shaped with a concave middle part and a high edge.

[0009] As an improvement, the launching channels are straight channels, and the plurality of launching channels are arranged radially on the bottom disc.

[0010] As an improvement, the launching channels are front-leaning channels with front-leaning tail ends and smooth transitions.

[0011] As an improvement, the launching channels are rear-leaning channels with rear-leaning tail ends and smooth transitions.

[0012] As an improvement, the upper side of the bottom disc is provided with an annular cover ring, a plurality of spaced ribs are arranged between the bottom disc and the cover ring, and the two adjacent ribs and the bottom disc and the cover ring form the launching channels.

[0013] As an improvement, a conical launching surface inclined upward from the outside is arranged on the bottom disc, and the conical launching surface extends from the concave part in the middle of the bottom disc to the launching channels.

[0014] A crusher, comprising a crushing cavity, wherein an inner wall at the lower part of the crushing cavity is provided with a gear ring, a launching disc is arranged horizontally and rotatably in the crushing cavity, the launching disc is the above-mentioned material exhaust launching disc, and the launching disc and the gear ring form a crushing pair when the launching disc rotates; the material on the launching disc can be launched to the gear ring when the launching disc rotates.

[0015] As an improvement, the gear ring comprises an annular mounting plate and a plurality of spaced first lining plates arranged on the mounting plate, the first lining plates are arranged vertically, and a gap is arranged between the first lining plates and the inner wall of the crushing cavity to form an exhaust area.

[0016] As an improvement, a horizontally rotating grading impeller assembly is provided in the crushing chamber, and the grading impeller assembly is arranged at the top of the crushing chamber; the top of the crushing chamber is connected to a discharge port, and the discharge port is connected to the interior of the crushing chamber through the grading impeller assembly; a feed port is provided on the side wall of the crushing chamber, and the feed port is located above the gear ring; and an air inlet is provided at the bottom of the crushing chamber.

[0017] As an improvement, a conical tube with a large upper end and a small lower end is provided in the crushing chamber. The conical tube is located outside the grading impeller assembly. A gap is provided between the upper end of the conical tube and the top wall of the crushing chamber, and the lower end of the conical tube is located above the emission disk.

[0018] The present invention adopts the above technical solution and has the following advantages compared with the prior art: In the pulverizing chamber of the present invention, the emission disc rotates and forms a pulverizing pair with the ring gear, which can maximally discharge air contained in the material, reduce air participation in the pulverizing process, avoid wasted work on the air during pulverization, effectively reduce the formation of eddy currents in the pulverizing area, avoid excessive pulverization of the material, enhance strong pulverization, reduce weak pulverization, reduce the generation of ultrafine powder, and make the product particle size more concentrated, thereby improving the pulverizing efficiency and product quality of the pulverizer. This improves the product yield rate, greatly reduces energy consumption, and has the advantages of simple structure and practical suitability.

[0019] The present invention is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a pulverizer according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the middle gear ring; Figure 3 for Figure 1 A-direction structural diagram in FIG; Figure 4 for Figure 1 Schematic diagram of the structure of the medium aggregate exhaust emission plate; Figure 5 A schematic top view of a material collecting exhaust emission disk having radial emission channels according to an embodiment of the present invention; Figure 6 Schematic top view of a material collecting exhaust emission plate with a backward-inclined emission channel in an embodiment of the present invention Figure 7 It is a partial top view schematic diagram of an impact mill in the prior art; Figure 8 for Figure 7 BB cross-sectional view in FIG; Figure 9 for Figure 7 Schematic diagram of vortex formation on the leeward side of the hammerhead; Wherein: 1 - base, 2 - launching channel, 3 - cover ring, 4 - rib plate, 5 - connecting rib, 6 - conical launching surface, 7 - mounting hole, 8 - crushing chamber, 9 - launching disc, 10 - gear ring, 11 - mounting plate, 12 - first lining plate, 13 - exhaust area, 14 - grading impeller assembly, 15 - discharge port, 16 - feed port, 17 - air inlet, 18 - feeding screw, 19 - conical tube, 20 - upper chamber, 21 - impeller shaft, 22 - power shaft, 23 - distribution member, 24 - hammer head, 25 - second lining plate, 26 - windward surface, 27 - leeward surface. DETAILED DESCRIPTION

[0021] For the convenience of illustration, but not for the limitation, the direction close to the center of the crusher is defined as the inner, and the opposite direction is defined as the outer.

[0022] EMBODIMENT

[0023] As shown in Figure 1 , a crusher comprises a crushing chamber 8, the side wall of the crushing chamber 8 is provided with a feed port 16, and the bottom of the crushing chamber 8 is provided with an air inlet 17. A grading impeller assembly 14 is arranged horizontally and rotatably in the crushing chamber 8, and the grading impeller assembly 14 is arranged at the top of the crushing chamber 8. The top of the crushing chamber 8 is connected with a discharge port 15, and the discharge port 15 is connected with the inside of the crushing chamber 8 through the grading impeller assembly 14. The grading impeller assembly 14 is a conventional component on the crusher, which belongs to the prior art, and will not be described here. Specifically, the top of the crushing chamber 8 is provided with an upper chamber 20, and the upper chamber 20 is connected with the inside of the crushing chamber 8. The discharge port 15 is arranged on the upper chamber 20. The upper chamber 20 is provided with a rotatably arranged impeller shaft 21, and the upper end of the impeller shaft 21 extends to the outside of the upper chamber 20 and is drivingly connected with a first power device. The lower end of the impeller shaft 21 extends into the crushing chamber 8, and the lower end of the impeller shaft 21 is provided with the grading impeller assembly 14. When the impeller shaft 21 rotates, the grading impeller assembly 14 is driven to rotate. The upper chamber 20 is connected with the inside of the crushing chamber 8 through the grading impeller assembly 14.

[0024] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figures, the inner wall of the lower part of the crushing cavity 8 is provided with a gear ring 10, and the crushing cavity 8 is provided with a horizontally rotating launching disc 9. The launching disc 9 is a material collecting and air exhausting launching disc, and the height of the launching disc 9 is adapted to the height of the gear ring 10. When the launching disc 9 rotates, the gear ring 10 and the launching disc 9 form a crushing pair. When the launching disc 9 rotates, the material accumulated on the launching disc 9 can be launched to the gear ring 10. In this embodiment, a power rotating shaft 22 is vertically arranged in the crushing cavity 8, and the upper end of the power rotating shaft 22 is fixedly installed with the launching disc 9. The lower end of the power rotating shaft 22 extends to the outside of the crushing cavity 8 and is drivingly connected with the second power device. When the power rotating shaft 22 rotates, the launching disc 9 rotates horizontally.

[0025] As shown in the figures, Figure 1 , Figure 2 and Figure 3 As shown in the figures, the gear ring 10 includes an annular mounting plate 11 and a plurality of first lining plates 12 arranged at intervals on the mounting plate 11. The first lining plates 12 are vertically arranged, and the first lining plates 12 and the inner wall of the crushing cavity 8 are provided with a gap to form an air exhaust area 13. In this embodiment, the number of the first lining plates 12 on the mounting plate 11 is one hundred. In actual application, the number of the first lining plates 12 can be adjusted according to the size of the gear ring 10 and the actual application requirements.

[0026] As shown in the figures, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figures, the material collecting and air exhausting launching disc includes a base disc 1 and a plurality of launching flow channels 2 arranged at intervals on the lateral edges of the upper side of the base disc 1. The plurality of launching flow channels 2 are circumferentially arranged along the base disc 1. The base disc 1 is a disc-shaped body with a concave middle part and high edges, which is beneficial to the accumulation of material flow and reduces the gas content in the material to be crushed. The center of the base disc 1 is provided with a mounting hole 7, which is adapted to the upper end of the power rotating shaft 22. Preferably, the mounting hole 7 is rectangular. The upper end of the power rotating shaft 22 penetrates the mounting hole 7, and the upper end of the power rotating shaft 22 is sleeved with a circular truncated cone-shaped material distributing member 23. The material distributing member 23 is fixed to the power rotating shaft 22 by fasteners. The material distributing member 23 and the material collecting and air exhausting launching disc are fixed to the power rotating shaft 22 by fasteners, and the fasteners are preferably screws.

[0027] In this embodiment, fifty-seven launching flow channels 2 are arranged on the base disc 1, and the number of the launching flow channels 2 can be adjusted according to the size of the base disc 1 in actual application. In this embodiment, the launching flow channels 2 are front-inclined flow channels with smooth transitions, that is, when the launching disc 9 is used, the rotating direction of the launching disc 9 is defined as the front direction, and the outer end of the launching flow channel 2 is inclined forward relative to the inner end.

[0028] An annular cover ring 3 is provided on the upper side of the chassis 1, and a plurality of spaced ribs 4 are provided between the chassis 1 and the cover ring 3. The two adjacent ribs 4, as well as the chassis 1 and the cover ring 3, form the launch channel 2. The ribs 4 are provided on the cover ring 3 or the chassis 1. Preferably in this embodiment, the extension path of the ribs 4 is a spiral line. The ribs 4 are provided on the upper side of the chassis 1, and the chassis 1 is provided with connecting ribs 5 for fixing the cover ring 3. The cover ring 3 is fixedly mounted on the connecting ribs 5 of the chassis 1 by fasteners. In actual application, the number of connecting ribs 5 can be set according to the size of the chassis 1. Preferably in this embodiment, the number of connecting ribs 5 is three, and the three connecting ribs 5 are evenly distributed on the chassis 1. Screw holes are processed on the three connecting ribs 5, and through holes are provided at the positions corresponding to the screw holes on the cover ring 3. The cover ring 3 is fixedly mounted on the connecting ribs 5 of the chassis 1 by fastening screws.

[0029] In actual application, the shape of the emission channel 2 can be changed according to the actual type of material to be crushed, crushing requirements, etc. Figure 5 As shown, the emission channel 2 is a straight channel, and multiple emission channels 2 are radially arranged on the chassis 1. Figure 6 As shown, the launch channel 2 is a rearward-inclined, smoothly transitioning channel with a rearward-inclined tail end. That is, when the launch disk 9 is in use, with the launch disk 9 rotating in the forward direction, the outer end of the launch channel 2 tilts rearward relative to its inner end. The rib 4 extends along a helical path. By varying the shape and path of the launch channel 2, the requirements of different operating conditions can be met.

[0030] The chassis 1 is provided with an annular, outer upwardly inclined conical emitting surface 6 , which extends from a recess in the middle of the chassis 1 to the emitting flow channel 2 .

[0031] like Figure 1 As shown, a conical tube 19 with a large upper end and a small lower end is provided in the crushing chamber 8. The conical tube 19 is located on the outside of the grading impeller assembly 14. A gap is provided between the upper end of the conical tube 19 and the top wall of the crushing chamber 8. The lower end of the conical tube 19 is located above the launch disk 9. The feed port 16 is located above the ring gear 10. Preferably, in this embodiment, a feeding screw 18 is installed on the feed port 16, and the discharge end of the feeding screw 18 extends to the inside of the conical tube 19. The feeding screw 18 is used to transport the external material to be crushed to the launch disk 9 in the crushing chamber 8. The feeding screw 18 is a conventional component in the prior art and will not be described in detail here. Any feeding screw in the prior art that can transport materials can be used in the technical solution of this embodiment.

[0032] The disintegrator works, the discharge port 15 is in a negative pressure state all the time, gas is input into the disintegrating chamber 8 through the air inlet 17, and a gas flow will be formed in the disintegrating chamber 8, flowing from the air inlet 17 to the discharge port 15. Since the conical tube 19 is arranged outside the grading impeller assembly 14, the gas flow entering the disintegrating chamber 8 at the air inlet 17 will rise through the gap between the launching disc 9 and the gear ring 10, rise to the upper part of the disintegrating chamber 8 outside the conical tube 19, and then enter the inside of the conical tube 19 along the upper end of the conical tube 19, and finally rise to the upper chamber 20 through the grading impeller assembly 14 and is discharged through the discharge port 15. The conical tube 19 divides the space outside the grading impeller assembly 14 in the disintegrating chamber 8 into two parts, the inside of the conical tube 19 and the outside of the conical tube 19, so that the cross-sectional area of the gas flow circulation channel in the disintegrating chamber 8 is reduced, the gas flow velocity is increased, and the disintegrated material is beneficially driven to the grading impeller assembly 14 for sorting, and the qualified material is beneficially sorted in time.

[0033] The first power device drives the grading impeller assembly 14 to rotate horizontally in the disintegrating chamber 8 through the impeller rotating shaft 21. The second power device drives the launching disc 9 to rotate horizontally in the disintegrating chamber 8 through the power rotating shaft 22.

[0034] Firstly, the material is conveyed to the disintegrating chamber 8 by the feeding screw 18 at the feeding port 16, and the material entering the disintegrating chamber 8 first falls on the high-speed rotating launching disc 9. The material falling on the launching disc 9 is tightly attached to the conical launching surface 6 of the launching disc 9 and is disintegrated by impact and collision with the first lining plate 12 of the gear ring 10 through the launching flow channel 2. In the process of entering the launching flow channel 2, the material can maximize the discharge of air contained in the material, and can effectively avoid the useless work of air during disintegration. The rib plate 4 is distributed in a spiral line, and the launching flow channel 2 is forward inclined, which is beneficial to the impact of the material to be disintegrated on the first lining plate 12 at a higher linear velocity, and enhances the effect of strong disintegration. The launching flow channel 2 is closed, which reduces the vortex air flow formed on the back of the rib plate 4, significantly reduces the weak disintegration environment, and reduces weak disintegration. At the same time, when the material impacts the first lining plate 12, the air contained in the material can reach the air exhaust area 13 outside the first lining plate 12 through the gap between adjacent first lining plates 12, which can further enhance strong disintegration, reduce weak disintegration, and improve the disintegration efficiency of the disintegrator.

[0035] The disintegrated material moves upward along the gas flow under the action of the gas flow, and when the material passes through the grading impeller assembly 14, the qualified small particle material is separated by the grading impeller assembly 14, enters the upper chamber 20, and is discharged from the discharge port 15 and collected. The unqualified large particle material falls on the launching disc 9 again under the action of gravity and is disintegrated again at the first lining plate 12.

[0036] In the crushing cavity 8 of the present application, the transmission disc 9 forms a crushing pair with the gear ring 10 when rotating, which can discharge the air contained in the material to the maximum, reduce the air participating in the crushing process, avoid useless work on the air during crushing, effectively reduce the vortex formed in the crushing area, avoid over-crushing of the material, enhance the strong crushing and reduce the weak crushing, make the particle size of the product more concentrated, and improve the crushing efficiency of the crusher and the product quality.

[0037] In summary, the crusher of the present application can weaken the weak crushing environment during the crushing process, reduce the generation of superfine powder, make the particle size of the crushed material more concentrated, improve the product yield, greatly reduce the energy consumption, and has the advantages of simple structure, suitability for practical use and the like.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement of some technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A material collecting exhaust emission plate, characterized by: The invention comprises a chassis (1) and a plurality of spaced-apart emission channels (2) arranged on the upper edge of the chassis (1), wherein the plurality of emission channels (2) are arranged circumferentially along the chassis (1); the chassis (1) is dish-shaped with a concave middle and high edges.

2. The material collecting exhaust emission plate according to claim 1, characterized in that: The emission flow channel (2) is a straight flow channel, and a plurality of emission flow channels (2) are radially arranged on the chassis (1).

3. The material collecting exhaust emission plate according to claim 1, characterized in that: The emission flow channel (2) is a forward-inclined flow channel with a forward-inclined tail end and a smooth transition.

4. The material collecting exhaust emission plate according to claim 1, characterized in that: The launch flow channel (2) is a backward-inclined flow channel with a rear end and a smooth transition.

5. The material collecting exhaust emission plate according to any one of claims 1 to 4, characterized in that: An annular cover ring (3) is provided on the upper side of the chassis (1), a plurality of spaced ribs (4) are provided between the chassis (1) and the cover ring (3), and the emission flow channel (2) is enclosed by two adjacent ribs (4) and the chassis (1) and the cover ring (3).

6. The material collecting exhaust emission plate according to any one of claims 1 to 4, characterized in that: The chassis (1) is provided with a conical emitting surface (6) with an outer portion tilted upward, and the conical emitting surface (6) extends from a recess in the middle of the chassis (1) to the emitting flow channel (2).

7. A pulverizer, comprising a pulverizing chamber (8), characterized in that: A gear ring (10) is provided on the inner wall of the lower part of the crushing chamber (8), and a horizontally rotatable launch disk (9) is provided in the crushing chamber (8). The launch disk (9) is the aggregate exhaust launch disk according to any one of claims 1 to 6. When the launch disk (9) rotates, it forms a crushing pair with the gear ring (10); when the launch disk (9) rotates, the material on it can be launched to the gear ring (10).

8. The pulverizer according to claim 7, wherein: The gear ring (10) comprises an annular mounting plate (11) and a plurality of first lining plates (12) arranged at intervals on the mounting plate (11). The first lining plates (12) are arranged vertically, and a gap is provided between the first lining plates (12) and the inner wall of the pulverizing chamber (8) to form an exhaust zone (13).

9. The pulverizer according to claim 7 or 8, characterized in that: A horizontally rotating grading impeller assembly (14) is provided in the pulverizing chamber (8), and the grading impeller assembly (14) is arranged at the top of the pulverizing chamber (8); a discharge port (15) is connected to the top of the pulverizing chamber (8), and the discharge port (15) is communicated with the interior of the pulverizing chamber (8) through the grading impeller assembly (14); A feed port (16) is provided on the side wall of the pulverizing chamber (8), and the feed port (16) is located above the gear ring (10); an air inlet (17) is provided at the bottom of the pulverizing chamber (8).

10. The pulverizer according to claim 9, wherein: A conical tube (19) with a large upper end and a small lower end is provided in the pulverizing chamber (8). The conical tube (19) is located outside the classifying impeller assembly (14). A gap is provided between the upper end of the conical tube (19) and the top wall of the pulverizing chamber (8). The lower end of the conical tube (19) is located above the emission disk (9).

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