A pre-treatment limestone screening and crushing device

Abstract

The present application relates to a kind of pre-treatment limestone screening and crushing device, including support frame and the stirring drum being arranged on support frame, the upper end of stirring drum is provided with conical feed cylinder, rotating shaft is penetrated from top to bottom in stirring drum, the upper end of rotating shaft is provided with the conical baffle matched with conical feed cylinder, the outer side of conical baffle is provided with two groups of guide components, the lower end of conical baffle is provided with sieve plate, sieve plate is vibrated up and down in stirring drum by vibration component in lower end, the center of sieve plate is provided with the crushing component for grinding limestone particles, the lower end of rotating shaft is provided with stirring component;The present application can block the upward floating of falling limestone powder by setting two groups of guide components;Through vibration component, the screening of lime raw material can be accelerated, and at the same time, limestone particles can be transported into crushing component, and grinding and crushing is carried out, so that the problem of uneven slurry in conventional lime slurry mixing process is solved.

Description

Technical Field

[0001] This invention relates to the field of lime feeding technology, specifically to a pre-treatment limestone screening and crushing device. Background Technology

[0002] The lime industry, as an important basic industrial sector, mainly uses limestone as raw material, which is produced through high-temperature calcination. Lime, as an inorganic cementing material, has wide applications in many fields such as construction, metallurgy, chemical industry, and environmental protection.

[0003] In a Chinese invention patent with publication number CN113059689A, a prior art document proposes a lime mortar feeding device for pre-treating lumpy lime, which specifically states that it "includes a base frame, a feeding component, a discharging component, a mixing component, and a control panel; the base frame is connected to the feeding component; the base frame is connected to the discharging component; and the discharging component is connected to the mixing component."

[0004] The aforementioned prior art also has the following defects: the device in the aforementioned prior art places lime on the first slide block, separates it into powder and granules through a screening component, and then performs subsequent processing steps. The inventors have found that when lime is poured onto the first slide block, not only will dust be blown out, but the lime powder is also difficult to flow downward on the first slide block by its own gravity. Therefore, we propose a pre-treatment limestone screening and crushing device. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies. This invention features a conical feed cylinder at the upper end of a mixing drum, with a rotating shaft running vertically through the drum. A motor driving the rotating shaft is located at the bottom of the mixing drum. A conical baffle, cooperating with the conical feed cylinder, is located at the upper end of the rotating shaft. Two sets of guide components are located on the outer side of the conical baffle. A sieve plate is located at the lower end of the conical baffle, vibrating up and down inside the mixing drum via a vibration component at its lower end. A crushing component for grinding limestone particles is located at the center of the sieve plate, with a fan at the lower end of the crushing component and a stirring component at the lower end of the fan. This invention, through the two sets of guide components, allows lime to slide into the mixing drum along the guide components during addition, reducing dust dispersion. Simultaneously, the guide components prevent falling lime powder from floating upwards. The vibration component vibrates the sieve plate up and down, accelerating the sieving of lime powder and particles. Simultaneously, it transports lime particles to the crushing component for grinding and crushing, solving the problem of granular lime and uneven mixing during conventional lime slurry mixing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pre-treatment limestone screening and crushing device includes a support frame and a mixing drum mounted on the support frame. A conical feed cylinder is located at the upper end of the mixing drum. A rotating shaft runs through the interior of the mixing drum from top to bottom. A motor driving the rotating shaft is located at the bottom of the mixing drum. A conical baffle, cooperating with the conical feed cylinder, is located at the upper end of the rotating shaft. Two sets of guide components are located on the outer side of the conical baffle. A screen plate is located at the lower end of the conical baffle. The screen plate vibrates up and down inside the mixing drum via a vibration component at its lower end. A crushing component for grinding limestone particles is located at the center of the screen plate. A fan is located at the lower end of the crushing component, and a mixing component is located at the lower end of the fan.

[0008] As a preferred embodiment, the guide assembly includes a plurality of hinge seats disposed along the outer side of the conical baffle in a circumferential direction, a guide plate hinged to the hinge seats, and a return spring disposed between the guide plate and the conical baffle.

[0009] As a preferred embodiment, the guide assembly includes a guide assembly at the upper end of the conical baffle and a guide assembly at the lower end of the conical baffle. The guide plate in the lower guide assembly is larger than the guide plate in the upper guide assembly, and the two sets of guide assemblies are staggered with each other.

[0010] As a preferred embodiment, the vibration assembly includes a fixed column disposed on one side of the lower end face of the sieve plate, a support rod disposed at the lower end of the fixed column, and a guide rail for driving the support rod to slide up and down.

[0011] As a preferred embodiment, the guide rail includes a parallel section and a raised section, and the parallel section and the raised section are connected in an arc shape.

[0012] As a preferred embodiment, the crushing assembly includes an upper grinding disc fixedly mounted on a rotating shaft, a lower grinding disc rotatably mounted on the rotating shaft, a gear mounted at the lower end of the upper grinding disc, a half gear mounted on the upper surface of the lower grinding disc and meshing with the gear, and a plurality of through slots located at the center of the lower grinding disc and arranged along the circumferential direction of the rotating shaft.

[0013] As a preferred embodiment, the inclination of the lower surface of the upper grinding disc is greater than the inclination of the upper surface of the lower grinding disc, and the thickness of the lower grinding disc is consistent with the distance of the vertical vibration amplitude of the sieve plate.

[0014] As another preferred embodiment, the stirring assembly includes several long stirring rollers a disposed at the lower end of the rotating shaft, several short stirring rollers b disposed in the middle of the rotating shaft, and several stirring blades disposed on the stirring rollers a and b.

[0015] The beneficial effects of this invention are:

[0016] 1. In this invention, two sets of guiding components are provided on the outer side of the conical baffle. During the lime feeding process, the lime slides down along the guide plate in the guiding component, which can reduce the dust flying during the feeding process. At the same time, the guide plate can block the lime powder that falls into the mixing drum and rises upward, reducing the loss of lime powder and reducing the absorption of dust by workers when breathing.

[0017] 2. In this invention, the vibrating component shakes the screen plate up and down, which speeds up the screening of lime powder and granules. At the same time, the lime granules can be transported to the crushing component for grinding and crushing, which solves the problem of granular lime and uneven mixing in the conventional lime slurry mixing process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. 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 creative effort.

[0019] Figure 1 This is an isometric structural diagram of a pre-treatment limestone screening and crushing device.

[0020] Figure 2 This is a schematic diagram of the internal structure of a pre-treatment limestone screening and crushing device.

[0021] Figure 3 This is a schematic diagram of the guide component.

[0022] Figure 4 This is a schematic diagram of the vibration assembly.

[0023] Figure 5 This is a schematic diagram of the crushing component.

[0024] Figure 6 This is a schematic diagram of the stirring assembly.

[0025] In the diagram: 1-Support frame; 2-Agitator drum; 3-Conical feed cylinder; 4-Rotating shaft; 5-Motor; 6-Conical baffle; 7-Guide assembly; 8-Screen plate; 9-Vibration assembly; 10-Crushing assembly; 11-Fan; 12-Agitator assembly; 71-Hinge seat; 72-Guide plate; 73-Reset spring; 91-Fixed column; 92-Support rod; 93-Guide rail; 101-Upper grinding disc; 102-Lower grinding disc; 103-Gear; 104-Half gear; 105-Through groove; 121-Agitator roller a; 122-Agitator roller b; 123-Agitator blade; 931-Parallel section; 932-Protruding section. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Example 1

[0028] Reference Figure 1-6 A pre-treatment limestone screening and crushing device includes a support frame 1 and a mixing drum 2 mounted on the support frame 1. A conical feed cylinder 3 is provided at the upper end of the mixing drum 2. A rotating shaft 4 runs through the inside of the mixing drum 2 from top to bottom. A motor 5 is provided at the bottom of the mixing drum 2 to drive the rotating shaft 4 to rotate. A conical baffle 6 is provided at the upper end of the rotating shaft 4 to cooperate with the conical feed cylinder 3. Two sets of guide components 7 are provided on the outer side of the conical baffle 6. A screen plate 8 is provided at the lower end of the conical baffle 6. The screen plate 8 vibrates up and down inside the mixing drum 2 through a vibration component 9 at its lower end. A crushing component 10 for grinding limestone particles is provided at the center of the screen plate 8. A fan 11 is provided at the lower end of the crushing component 10. A stirring component 12 is provided at the lower end of the fan 11.

[0029] It is worth mentioning that by providing a fan 11 at the lower end of the crushing component 10, a downward airflow can be formed inside the mixing drum 2, reducing the upward drift of lime powder.

[0030] Reference Figure 3 The guide assembly 7 includes a plurality of hinge seats 71 arranged along the circumferential direction on the outer side of the conical baffle 6, a guide plate 72 hinged on the hinge seats 71, and a return spring 73 arranged between the guide plate 72 and the conical baffle 6.

[0031] In this embodiment, the lime raw material falls downward along the guide plate 72, which can reduce the flying of lime powder. At the same time, the guide plate 72 can prevent the falling lime powder from floating upward.

[0032] Reference Figure 2 The guide assembly 7 includes a guide assembly 7 at the upper end of the conical baffle and a guide assembly 7 at the lower end of the conical baffle 6. The guide plate 72 in the lower guide assembly 7 is larger than the guide plate 72 in the upper guide assembly 7. The two sets of guide assemblies 7 are staggered with each other.

[0033] It is worth mentioning that the staggered arrangement of the two sets of guide components 7 can prevent lime powder from falling straight down and can block the flying lime powder from all directions.

[0034] Reference Figure 4The vibration assembly 9 includes a fixed column 91 disposed on one side of the lower end face of the sieve plate 8, a support rod 92 disposed at the lower end of the fixed column 91, and a guide rail 93 for driving the support rod 92 to slide up and down.

[0035] In this embodiment, the support rod 92 slides on the guide rail 93, causing the screen plate 8 to vibrate in the vertical direction, thereby accelerating the screening speed of lime raw materials.

[0036] Reference Figure 4 The guide rail 93 includes a parallel section 931 and a raised section 932, and the parallel section 931 and the raised section 932 are connected in an arc shape.

[0037] It is worth mentioning that the parallel section 931 and the raised section 932 are connected in an arc shape, which makes the support rod 92 slide more smoothly on the guide rail 93.

[0038] Reference Figure 5 The crushing assembly 10 includes an upper grinding disc 101 fixedly mounted on a rotating shaft 4, a lower grinding disc 102 rotatably mounted on the rotating shaft 4, a gear 103 mounted at the lower end of the upper grinding disc 101, a half gear 104 mounted on the upper surface of the lower grinding disc 102 and meshing with the gear 103, and a plurality of through slots 105 mounted at the center of the lower grinding disc 102 and arranged along the circumferential direction of the rotating shaft 4.

[0039] In this embodiment, the upper grinding disc 101 rotates synchronously with the rotating shaft 4, and the lower grinding disc 102 rotates in opposite directions to the upper grinding disc 101 through the meshing of the half gear 104 and the gear 103, thereby accelerating the grinding speed of lime particles.

[0040] Reference Figure 5 The inclination of the lower surface of the upper grinding disc 101 is greater than the inclination of the upper surface of the lower grinding disc 102, and the thickness of the lower grinding disc 102 is consistent with the distance of the vertical vibration amplitude of the sieve plate 8.

[0041] It is worth mentioning that the thickness of the lower grinding disc 102 is consistent with the distance of the vertical vibration amplitude of the screen plate 8. During the upward process, the screen plate 8 can better transport the lime particles between the upper grinding disc 101 and the lower grinding disc 102 for crushing.

[0042] Reference Figure 6 The stirring assembly 12 includes several long stirring rollers a121 disposed at the lower end of the rotating shaft 4, several short stirring rollers b122 disposed in the middle of the rotating shaft 4, and several stirring blades 123 disposed on the stirring rollers a121 and b122.

[0043] In this embodiment, by providing stirring blades 123 on each stirring roller, the contact area of ​​the stirring roller in the lime slurry can be increased, which can drive more slurry to be stirred, making it more uniformly stirred.

[0044] The work process is as follows:

[0045] Start motor 5 to drive rotating shaft 4 to rotate. Workers pour lime raw material into conical feed cylinder 3. The lime raw material compresses guide plate 72 towards reset spring 73 by gravity. The lime raw material slides down along the inclined direction of guide plate 72.

[0046] The lime raw material slides down to the screen plate 8. The support rod 92 at the lower end of the screen plate 8 slides on the guide rail 93, causing the screen plate 8 to shake up and down in the vertical direction. The remaining lime particles are shaken into the crushing component 10. The upper grinding disc 101 rotates by the rotation of the rotating shaft 4. The half gear 104 on the lower grinding disc 102 meshes with the gear 103 at the lower end of the upper grinding disc 101, causing the lower grinding disc 102 to rotate in the opposite direction to the upper grinding disc 101. The crushed lime powder falls into the mixing drum 2 below through the through groove 105. The mixing rollers a121 and b122 at the lower end of the rotating shaft 4 stir the lime slurry.

[0047] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pre-treatment limestone screening and crushing device, comprising a support frame (1) and a stirring drum (2) arranged on the support frame (1), characterized in that: The upper end of the stirring cylinder (2) is provided with a conical feeding cylinder (3), a rotating shaft (4) is vertically arranged in the stirring cylinder (2), a motor (5) is arranged at the bottom of the stirring cylinder (2) and drives the rotating shaft (4) to rotate, a conical baffle (6) is arranged at the upper end of the rotating shaft (4) and cooperates with the conical feeding cylinder (3), two groups of guide assemblies (7) are arranged on the outer side of the conical baffle (6), one is arranged at the upper end of the conical baffle (6) and the other is arranged at the lower end of the conical baffle (6), the size of the guide plate (72) in the guide assembly (7) at the lower end is larger than that of the guide plate (72) in the guide assembly (7) at the upper end, and the two groups of guide assemblies (7) are staggered with each other, a sieve plate (8) is arranged at the lower end of the conical baffle (6), the sieve plate (8) vertically vibrates in the stirring cylinder (2) through a vibration assembly (9) at the lower end, a crushing assembly (10) for grinding limestone particles is arranged at the center of the sieve plate (8), a fan (11) is arranged at the lower end of the crushing assembly (10), and a stirring assembly (12) is arranged at the lower end of the fan (11); the guide assembly (7) comprises a plurality of hinge seats (71) arranged on the outer side of the conical baffle (6) in the circumferential direction, a guide plate (72) hingedly connected to the hinge seat (71), and a reset spring (73) arranged between the guide plate (72) and the conical baffle (6).

2. A pre-treatment limestone screening and crushing apparatus as claimed in claim 1, wherein, The vibration assembly (9) comprises a fixed column (91) arranged on one side of the lower end surface of the sieve plate (8), a support rod (92) arranged at the lower end of the fixed column (91), and a guide rail (93) for driving the support rod (92) to slide up and down.

3. A pre-treatment limestone screening and crushing apparatus according to claim 2, characterised in that, The guide rail (93) comprises a parallel section (931) and a convex section (932), and the parallel section (931) and the convex section (932) are connected in an arc shape.

4. A pre-treatment limestone screening and crushing apparatus as claimed in claim 1, wherein, The stirring assembly (12) comprises a plurality of long stirring rollers a (121) arranged at the lower end of the rotating shaft (4), a plurality of short stirring rollers b (122) arranged at the middle of the rotating shaft (4), and a plurality of stirring blades (123) arranged on the stirring rollers a (121) and the stirring rollers b (122).

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