Automatic lime discharging structure for lime shaft kiln production

Abstract

The utility model discloses an automatic ash discharge structure for lime shaft kiln production, which relates to the technical field of lime production ash discharge, and comprises a kiln bottom ash discharge end and a disc arranged right below the kiln bottom ash discharge end, the center of the top of the disc is fixedly connected with a material distribution cone, and the top surface of the disc is in a circular truncated cone shape. An ash scraping assembly is arranged on the outer side face of the kiln bottom ash outlet end and comprises a plurality of sets of flat scrapers which are annularly connected to the outer side face of the kiln bottom ash outlet end at equal angles. In the using process, lime can be broken under the height difference of the multiple ash discharging sinking tables when flowing along the surface of the disc through the multiple ash discharging sinking tables, so that the lime falling from the kiln bottom ash discharging end can be layered on the top face of the disc, and it is avoided that the lime moves on the top face of the disc along the same track all the time; therefore, the lime discharging speed can be effectively increased, and the lime discharging efficiency of the lime discharging structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lime production and ash discharge, in particular to an automatic ash discharge structure for lime shaft kiln production. Background Art

[0002] A lime shaft kiln is a device used to convert limestone into active lime through a calcination process. It features high efficiency and energy saving, environmental protection, stable product quality, high degree of automation and high flexibility. These advantages give the lime shaft kiln significant advantages in production efficiency and product quality.

[0003] In lime production, ash discharging equipment is crucial to the quality and output of finished ash. The existing ash discharging equipment is mainly disc ash discharging machine, because the disc ash discharging machine can make the material discharge uniform, does not destroy the material shape, and is easy to control, thereby effectively improving the quality of the ash discharge.

[0004] The Chinese utility model patent with patent application number CN202021776680.3 records a disc ash discharger with high-efficiency ash collection, which pushes the scraper plate up and down through an electric hydraulic push rod, and can conveniently adjust the height of the scraper so that the user can scrape the inner wall of the kiln at different heights according to usage requirements, thereby improving the dust collection efficiency. However, the top surface of the disc on the main body of the ash discharger in the above-mentioned ash discharger is a horizontal plane, which will cause the centrifugal force on the top surface of the disc to be insufficient, thereby causing the lime to easily accumulate on the top surface of the disc, seriously reducing the ash discharge efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic ash discharge structure for lime shaft kiln production, so as to solve the problem in the existing lime shaft kiln ash discharge structure proposed in the above background technology that the fired lime is easily accumulated during the ash discharge process, which seriously reduces the ash discharge efficiency.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an automatic ash discharge structure for lime shaft kiln production, comprising an ash discharge end at the kiln bottom, and a disc arranged directly below the ash discharge end at the kiln bottom, a material distribution cone being fixedly connected to the center of the top of the disc, the top surface of the disc being truncated, and an ash scraping assembly being provided on the outer surface of the ash discharge end at the kiln bottom;

[0007] The scraping assembly includes several groups of flat scrapers connected in a ring shape at equal angles to the outer surface of the ash outlet end of the kiln bottom. The bottom ends of the flat scrapers are in contact with the top surface of the disc, and the length direction of the bottom ends of the flat scrapers is parallel to the generatrix of the top surface of the disc.

[0008] Preferably, the top surface of the disc is provided with several ash discharge sinks from top to bottom, the inner wall of the ash discharge sink on the upper side away from the axis of the disc is connected to the inner wall of the adjacent ash discharge sink on the lower side close to the axis of the disc, the inner wall of the ash discharge sink on the lowest side away from the axis of the disc passes through the outer wall of the disc, and the inner bottom walls of several ash discharge sinks are all cone-shaped, and the number of flat scrapers in each group is equal to and corresponds to the number of ash discharge sinks. The advantage of such a setting is that the lime can be broken at the height difference of several ash discharge sinks when flowing along the surface of the disc, so that the lime falling from the ash discharge end at the bottom of the kiln can be stratified on the top surface of the disc, avoiding the lime always moving along the same trajectory on the top surface of the disc, thereby effectively improving the speed of lime ash discharge and improving the ash discharge efficiency of the ash discharge structure.

[0009] Preferably, the inclination of the inner bottom wall of several of the ash discharge sinks gradually increases from top to bottom, and the depth of several of the ash discharge sinks gradually decreases from top to bottom. The advantage of this arrangement is that when the lime moves from the center position of the disc to the edge position, under the guidance of the larger inclination of the lower ash discharge sink, the lime can always maintain a faster moving speed under the action of the centrifugal force generated by the rotation of the disc, thereby further improving the ash discharge efficiency of the ash discharge structure.

[0010] Preferably, the scraping assembly also includes several groups of vertical scrapers, the number of vertical scrapers in each group is equal to the number of flat scrapers in each group, and each group of several vertical scrapers is fixedly connected to the side surfaces of each group of several flat scrapers through connecting rods. The vertical scrapers are arc-shaped, and the side surfaces of the vertical scrapers close to the axis of the disc are in contact with the inner wall of the ash discharge sink close to the axis of the disc. The top of the flat scraper is provided with a blade, and the blade of the flat scraper is higher than the height of the inner wall of the ash discharge sink close to the axis of the disc. The advantage of this arrangement is that the vertical scrapers can cut the lime at the boundary between any two adjacent upper and lower ash discharge sinks, thereby accelerating the lime to slide from the upper ash discharge sink to the lower ash discharge sink, greatly improving the ash discharge efficiency of the ash discharge structure.

[0011] Preferably, the central angle corresponding to the vertical scraper is not greater than eight degrees, and the height of the vertical scraper is not greater than one and a half times the height of the inner wall of the ash discharge sink near the axis of the disc. The advantage of this arrangement is that, while ensuring that the lime can be effectively cut at the boundary between any two adjacent ash discharge sinks, the blocking area of ​​the lime flow is reduced, thereby ensuring the ash discharge efficiency of the ash discharge structure.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] 1. In the present invention, by setting up a plurality of ash discharge sinks, the lime can be broken under the height difference of the plurality of ash discharge sinks when flowing along the surface of the disc, so that the lime falling from the ash discharge end at the bottom of the kiln can be layered on the top surface of the disc, avoiding the lime always moving along the same trajectory on the top surface of the disc, thereby effectively improving the speed of lime ash discharge and improving the ash discharge efficiency of the ash discharge structure.

[0014] 2. In the present invention, the vertical scraper can cut the lime at the boundary between any two adjacent ash discharge sinks, thereby accelerating the lime to slide from the upper ash discharge sink to the lower ash discharge sink, greatly improving the ash discharge efficiency of the ash discharge structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram of an automatic ash discharge structure for lime shaft kiln production in an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of a first partial structure of an automatic ash discharge structure for lime shaft kiln production in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of a second partial structure of an automatic ash discharge structure for lime shaft kiln production in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic structural diagram of a disc in an embodiment of the present utility model;

[0020] Figure 5 In the embodiment of the present utility model Figure 2 Enlarged schematic diagram of point A in the middle.

[0021] In the figure: 1. Ash outlet at the bottom of the kiln; 2. Disc; 3. Material dividing cone; 4. Ash scraping assembly; 41. Flat scraper; 42. Vertical scraper; 43. Connecting rod; 44. Straight rod; 45. Cross rod; 46. Fixed plate; 5. Support plate; 6. Helical teeth; 7. Bevel gear; 8. Fixed seat. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1

[0024] Please refer to Figure 1-Figure 5 The automatic ash discharge structure for lime shaft kiln production shown in the figure includes an ash discharge terminal 1 at the kiln bottom, and a disc 2 located directly below the kiln bottom ash discharge terminal 1. A material distribution cone 3 is fixedly connected to the center of the top of the disc 2. The top surface of the disc 2 is frustum-shaped. An ash scraping assembly 4 is provided on the outer surface of the kiln bottom ash discharge terminal 1.

[0025] The scraping assembly 4 includes a plurality of flat scrapers 41 connected to the outer surface of the ash outlet end 1 of the kiln bottom in a circular shape at equal angles. The bottom ends of the flat scrapers 41 are in contact with the top surface of the disc 2, and the length direction of the bottom ends of the flat scrapers 41 is parallel to the generatrix of the top surface of the disc 2.

[0026] The top of the flat scraper 41 is fixedly connected to a straight rod 44, the top of the straight rod 44 is fixedly connected to a cross bar 45, and the end of the cross bar 45 close to the ash outlet end 1 at the bottom of the kiln is fixedly connected to a fixed plate 46, which is fixedly connected to the outer surface of the ash outlet end 1 at the bottom of the kiln.

[0027] Example 2

[0028] According to Example 1, please refer to Figure 1-Figure 4 A number of ash discharge sinks 21 are provided on the top surface of the disc 2 from top to bottom. The inner wall of the upper ash discharge sink 21 away from the axis of the disc 2 is connected to the inner wall of the lower adjacent ash discharge sink 21 close to the axis of the disc 2. The inner wall of the lowermost ash discharge sink 21 away from the axis of the disc 2 passes through the outer wall of the disc 2. The inner bottom walls of the several ash discharge sinks 21 are all frustum-shaped. The number of flat scrapers 41 in each group is equal to the number of ash discharge sinks 21 and corresponds one to one.

[0029] Specifically, by setting up several ash discharge sinks 21, the lime can break under the height difference of several ash discharge sinks 21 when flowing along the surface of the disc 2, so that the lime falling from the ash discharge end 1 at the bottom of the kiln can be stratified on the top surface of the disc 2, avoiding the lime always moving along the same trajectory on the top surface of the disc 2, thereby effectively improving the lime ash discharge speed and improving the ash discharge efficiency of the ash discharge structure.

[0030] refer to Figure 3 and Figure 4The inclination of the inner bottom wall of the plurality of ash discharge sinks 21 gradually increases from top to bottom, and the depth of the plurality of ash discharge sinks 21 gradually decreases from top to bottom.

[0031] Specifically, when the lime moves from the center position of the disc 2 to the edge position, under the guidance of the larger inclination of the lower ash discharge platform 21, the lime can always maintain a faster moving speed under the action of the centrifugal force generated by the rotation of the disc 2, thereby further improving the ash discharge efficiency of the ash discharge structure.

[0032] Example 3

[0033] According to Example 1 or 2, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5 The scraping assembly 4 also includes several groups of vertical scrapers 42. The number of vertical scrapers 42 in each group is equal to the number of flat scrapers 41 in each group. Each group of several vertical scrapers 42 is fixedly connected to the side surfaces of each group of several flat scrapers 41 through connecting rods 43. The vertical scrapers 42 are arc-shaped. The side of the vertical scraper 42 close to the axis of the disc 2 is in contact with the inner wall of the ash discharge sink 21 close to the axis of the disc 2. A blade is provided on the top of the flat scraper 41, and the blade of the flat scraper 41 is higher than the height of the inner wall of the ash discharge sink 21 close to the axis of the disc 2.

[0034] Specifically, the vertical scraper 42 can cut the lime at the boundary between any two adjacent ash discharge platforms 21, thereby accelerating the lime to slide from the upper ash discharge platform 21 to the lower ash discharge platform 21, greatly improving the ash discharge efficiency of the ash discharge structure.

[0035] refer to Figure 4 and Figure 5 The central angle of the vertical scraper 42 is no greater than eight degrees, and the height of the vertical scraper 42 is no greater than one and a half times the height of the inner side wall of the ash discharge sink 21 close to the axis of the disc 2.

[0036] Specifically, under the premise of ensuring that lime can be effectively cut at the boundary between any two upper and lower adjacent ash discharge sinks 21, the blocking area for lime flow is reduced, thereby ensuring the ash discharge efficiency of the ash discharge structure.

[0037] A support plate 5 is fixedly connected to the bottom of the disc 2. A plurality of helical teeth 6 are provided in a ring-shaped manner at equal angles at the bottom of the support plate 5. The support plate 5 also includes a bevel gear 7. The bevel gear 7 and the plurality of helical teeth 6 are engaged with each other to drive the support plate 5 and the disc 2 to rotate. A fixed seat 8 is fixedly connected to the center of the bottom of the support plate 5.

[0038] The bevel gear 7 is driven by a driving device, which is shown in the figure and can be a reduction motor.

[0039] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic ash discharge structure for lime shaft kiln production, comprising an ash discharge end (1) at the bottom of the kiln, characterized in that: It also includes a disc (2) located just below the ash outlet end (1) at the bottom of the kiln, a material distribution cone (3) is fixedly connected to the center of the top of the disc (2), the top surface of the disc (2) is a frustum, and an ash scraping assembly (4) is provided on the outer surface of the ash outlet end (1) at the bottom of the kiln; The scraping assembly (4) comprises a plurality of groups of flat scrapers (41) connected in a circular shape at equal angles to the outer surface of the ash outlet end (1) of the kiln bottom, the bottom ends of the flat scrapers (41) being in contact with the top surface of the disc (2), and the length direction of the bottom ends of the flat scrapers (41) being parallel to the generatrix of the top surface of the disc (2).

2. The automatic ash discharge structure for lime shaft kiln production according to claim 1, characterized in that: The top surface of the disc (2) is provided with a plurality of ash discharge sinks (21) in sequence from top to bottom. The inner side wall of the upper ash discharge sink (21) away from the axis of the disc (2) is connected to the inner side wall of the lower adjacent ash discharge sink (21) close to the axis of the disc (2). The inner side wall of the lowermost ash discharge sink (21) away from the axis of the disc (2) passes through the outer side wall of the disc (2). The inner bottom walls of the plurality of ash discharge sinks (21) are all in the shape of a cone. The number of the flat scrapers (41) in each group is equal to the number of the ash discharge sinks (21) and corresponds one to one.

3. The automatic ash discharge structure for lime shaft kiln production according to claim 2, characterized in that: The inclination of the inner bottom walls of the plurality of ash discharge sinks (21) gradually increases from top to bottom, and the depth of the plurality of ash discharge sinks (21) gradually decreases from top to bottom.

4. The automatic ash discharge structure for lime shaft kiln production according to claim 3, characterized in that: The scraping assembly (4) further comprises a plurality of groups of vertical scrapers (42), the number of the vertical scrapers (42) in each group being equal to the number of the flat scrapers (41) in each group, the plurality of vertical scrapers (42) in each group being fixedly connected to the side surfaces of the plurality of flat scrapers (41) in each group via connecting rods (43), the vertical scrapers (42) being arc-shaped, the side surfaces of the vertical scrapers (42) close to the axis of the disc (2) being in contact with the inner side wall of the ash discharge sink (21) close to the axis of the disc (2), the top end of the flat scraper (41) being provided with a blade, the blade of the flat scraper (41) being higher than the height of the inner side wall of the ash discharge sink (21) close to the axis of the disc (2).

5. The automatic ash discharge structure for lime shaft kiln production according to claim 4, characterized in that: The central angle corresponding to the vertical scraper (42) is no greater than eight degrees, and the height of the vertical scraper (42) is no greater than one and a half times the height of the inner side wall of the ash discharge sink (21) close to the axis of the disc (2).

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