Limestone pre-screening efficient crushing device

Abstract

The utility model relates to the technical field of cement raw material processing, in particular to a limestone pre-screening efficient crushing device which comprises a crushing machine body, a hole is formed in one side of the top of the crushing machine body and communicated with a feeding groove, the back face of the crushing machine body is designed to be of an open structure, and an access cover is fixedly installed on the back face of the crushing machine body. Screening holes; the sieve pores are equidistantly formed in the bottom of the crusher body; the sieve holes are located below the discharging direction of the feeding groove. The utility model solves the problem that when a hammer crusher used at the present stage is used for crushing limestone, qualified materials or fine materials enter the crusher to be subjected to invalid crushing, so that the materials are over-crushed.

Description

Technical Field

[0001] The utility model relates to the technical field of cement raw material processing, in particular to a limestone pre-screening and efficient crushing device. Background Art

[0002] The main component of limestone is calcium carbonate (CaCO3). Lime and limestone are raw materials used in large quantities in building materials and industry. Limestone can be directly processed into stone and burned into quicklime. Quicklime CaO absorbs moisture or adds water to become slaked lime. The main component of slaked lime is Ca(OH)2, which can be called calcium hydroxide. Slaked lime is prepared into lime slurry, lime paste, etc., which are used as coating materials and brick and tile adhesives. Various mineral raw materials such as limestone in industrial and mining enterprises such as cement plants have uneven particle sizes, including block, small particles and powder materials. When preparing products, unqualified block materials need to be crushed into qualified materials.

[0003] In the prior art, materials are fed into a screening feeder through a silo and then conveyed to a crusher by a belt conveyor for crushing, which causes ineffective crushing of qualified materials or fine materials entering the crusher, thereby increasing ineffective power consumption. On the other hand, materials often need to be repeatedly crushed in the crusher, resulting in serious over-crushing of fine materials.

[0004] Hammer crushers are mainly used for crushing limestone. According to on-site information, the raw materials generally contain a lot of mud and a large number of small particles. Due to the high strength and hardness of limestone itself and the small particles mixed into the crusher, the reactive power is increased, the crushing efficiency is reduced, and the wear on the hammer head is increased, which leads to the easy breakage of the hammer head and the short service life. This increases the unit energy consumption of the crusher, reduces production efficiency, and increases the labor intensity of workers and equipment maintenance costs. Therefore, a limestone pre-screening and efficient crushing device is needed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a limestone pre-screening and efficient crushing device, which has the advantage of pre-screening the limestone entering the crushing mechanism to avoid over-crushing of small particles after they are mixed into the crushing mechanism, and solves the problem that qualified materials or fine materials enter the crusher for ineffective crushing when the hammer crusher used at the current stage is crushing limestone, resulting in over-crushing of the materials.

[0006] To achieve the above object, the utility model provides the following technical solution: a limestone pre-screening and efficient crushing device, comprising a crusher body, a hole is opened on one side of the top of the crusher body and connected to a feed trough, the back of the crusher body adopts an open structure design and a maintenance cover is fixedly installed, and also includes a sieve hole;

[0007] The screen holes are evenly spaced at the bottom of the crusher body;

[0008] The sieve holes are located below the discharging direction of the feed trough.

[0009] When using a limestone pre-screening high-efficiency crushing device in the technical solution, limestone is injected into the crusher body through the feed trough, and the limestone injected into the crusher body through the feed trough directly falls to the sieve holes, so that qualified materials or fine materials can be directly discharged through the sieve holes, and larger limestone is stacked and falls to the hammer body. At this time, the transmission shaft rotates counterclockwise under the action of the driving mechanism body, and swings the hammer body under the action of centrifugal force, so that the limestone is crushed through the contact between the hammer body and the inner wall of the crusher body, and after the limestone is crushed, the material is swung to the sieve holes through the hammer body and discharged.

[0010] Preferably, a transmission shaft is rotatably installed on the other side of the crusher body, telescopic rods are fixedly installed on the transmission shaft in a ring array, the front end of the transmission shaft passes through the crusher body and is fixedly installed with a transmission wheel, and a support frame is fixedly installed at the bottom of the crusher body.

[0011] A transmission shaft is rotatably installed on the other side of the crusher body, and telescopic rods are fixedly installed on the transmission shaft in a ring array, so that when the transmission shaft rotates, the telescopic rods can be extended under the action of gravity and centrifugal force.

[0012] Preferably, a hammer body is fixedly mounted on one end of the telescopic rod away from the transmission shaft.

[0013] The hammer body is fixedly installed on the end of the telescopic rod away from the transmission shaft, so that when the telescopic rod is extended, the hammer body can be closer to the inner wall of the crushing mechanism body, thereby crushing the limestone.

[0014] Preferably, a transmission belt is installed on the transmission wheel, and a driving mechanism body is installed on one end of the transmission belt away from the transmission wheel.

[0015] A transmission belt is installed on the transmission wheel, and a driving mechanism body is installed on the end of the transmission belt away from the transmission wheel, so that the driving mechanism body can drive the transmission wheel to rotate through the transmission belt, thereby realizing the rotation of the transmission shaft inside the crusher body.

[0016] Preferably, the driving mechanism body adopts three-phase electric drive, and the driving mechanism body adopts a servo motor structure design.

[0017] The drive mechanism body is driven by three-phase electricity, so that the drive mechanism body can perform high-power work. At the same time, the drive mechanism body is designed with a servo motor structure, so that the speed of the drive mechanism body is adjustable.

[0018] Preferably, the inspection cover is fixedly mounted to the crusher body by mounting bolts.

[0019] The inspection cover is fixedly mounted to the crusher body by mounting bolts, so that during maintenance, the inspection cover can be removed by removing the mounting bolts, thereby exposing the internal structure of the crusher body for maintenance.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0021] The utility model provides sieve holes, and opens the sieve holes equidistantly at the bottom of the crusher body, and locates the sieve holes below the discharging direction of the feed chute. In specific operation, limestone is injected into the crusher body through the feed chute, and the limestone injected into the crusher body through the feed chute directly falls to the sieve holes, so that qualified materials or fine materials can be directly discharged through the sieve holes, and larger limestone is stacked and falls to the hammer body. At this time, the transmission shaft rotates counterclockwise under the action of the driving mechanism body, and swings the hammer body under the action of centrifugal force, so that the limestone is crushed through the contact between the hammer body and the inner wall of the crusher body, and after the limestone is crushed, the material is swung to the sieve holes through the hammer body and discharged, so as to achieve the effect of pre-screening the limestone entering the crushing mechanism, thereby avoiding the effect of over-crushing of small particles after being mixed into the crushing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0024] Figure 3 For the utility model Figure 2 The structural diagram of the enlarged part in the middle;

[0025] Figure 4 It is a rear view structural schematic diagram of the utility model.

[0026] In the figure: 1. support frame; 2. inspection cover; 3. feed chute; 4. crusher body; 5. transmission wheel; 6. transmission belt; 7. driving mechanism body; 8. sieve hole; 9. transmission shaft; 10. telescopic rod; 11. hammer body. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an embodiment of the utility model is provided: a limestone pre-screening high-efficiency crushing device, comprising a crusher body 4, a hole is opened on one side of the top of the crusher body 4 and connected to a feed trough 3, the back of the crusher body 4 adopts an open structure design and a maintenance cover 2 is fixedly installed, and also includes a sieve hole 8;

[0030] Specifically, the sieve holes 8 are equidistantly arranged at the bottom of the crusher body 4;

[0031] The sieve holes 8 are located below the discharge direction of the feed trough 3 .

[0032] By setting the sieve holes 8, and opening the sieve holes 8 at equal intervals at the bottom of the crusher body 4, and locating the sieve holes 8 below the discharge direction of the feed trough 3, during specific operation, limestone is injected into the crusher body 4 through the feed trough 3, and the limestone injected into the crusher body 4 through the feed trough 3 directly falls to the sieve holes 8, so that qualified materials or fine materials can be directly discharged through the sieve holes 8, and larger limestone is stacked and falls to the hammer body 11. At this time, the transmission shaft 9 rotates counterclockwise under the action of the driving mechanism body 7, and swings the hammer body 11 under the action of centrifugal force, so that the limestone is crushed through the contact between the hammer body 11 and the inner wall of the crusher body 4, and after the limestone is crushed, the material is swung to the sieve hole 8 through the hammer body 11 and discharged, thereby achieving the effect of pre-screening the limestone entering the crushing mechanism to avoid small particles from being mixed and over-crushed after entering the crushing mechanism.

[0033] Furthermore, a transmission shaft 9 is rotatably installed on the other side of the crusher body 4, and telescopic rods 10 are fixedly installed on the transmission shaft 9 in a ring array. The front end of the transmission shaft 9 passes through the crusher body 4 and is fixedly installed with a transmission wheel 5, and a support frame 1 is fixedly installed at the bottom of the crusher body 4.

[0034] A transmission shaft 9 is rotatably mounted on the other side of the crusher body 4, and telescopic rods 10 are fixedly mounted on the transmission shaft 9 in a ring array, so that when the transmission shaft 9 rotates, the telescopic rods 10 can be extended under the action of gravity and centrifugal force.

[0035] Furthermore, a hammer body 11 is fixedly mounted on one end of the telescopic rod 10 away from the transmission shaft 9 .

[0036] The hammer body 11 is fixedly mounted on the end of the telescopic rod 10 away from the transmission shaft 9, so that when the telescopic rod 10 is extended, the hammer body 11 can be closer to the inner wall of the crushing mechanism body 7, thereby crushing the limestone.

[0037] Furthermore, a transmission belt 6 is transmission-mounted on the transmission wheel 5 , and a driving mechanism body 7 is transmission-mounted on one end of the transmission belt 6 away from the transmission wheel 5 .

[0038] A transmission belt 6 is installed on the transmission wheel 5, and a driving mechanism body 7 is installed on the end of the transmission belt 6 away from the transmission wheel 5, so that the driving mechanism body 7 can drive the transmission wheel 5 to rotate through the transmission belt 6, thereby realizing the rotation of the transmission shaft 9 inside the crusher body 4.

[0039] Furthermore, the driving mechanism body 7 adopts three-phase electric drive, and the driving mechanism body 7 adopts a servo motor structure design.

[0040] The driving mechanism body 7 is driven by three-phase electricity, so that the driving mechanism body 7 can perform high-power work. At the same time, the driving mechanism body 7 is designed with a servo motor structure, so that the speed of the driving mechanism body 7 is adjustable.

[0041] Furthermore, the inspection cover 2 is fixedly mounted to the crusher body 4 by means of mounting bolts.

[0042] By fixing the inspection cover 2 to the crusher body 4 through the mounting bolts, the inspection cover 2 can be removed by disassembling the mounting bolts during maintenance, thereby exposing the internal mechanism of the crusher body 4 for maintenance. When the utility model is used, limestone is injected into the crusher body 4 through the feed trough 3, and the limestone injected into the crusher body 4 through the feed trough 3 directly falls to the sieve hole 8, so that qualified materials or fine materials can be directly discharged through the sieve hole 8, and the larger limestone is stacked and falls to the hammer body 11, at which time the transmission shaft 9 rotates counterclockwise under the action of the driving mechanism body 7, and swings the hammer body 11 under the action of centrifugal force, so that the limestone is crushed through the contact between the hammer body 11 and the inner wall of the crusher body 4, and after the limestone is crushed, the material is swung to the sieve hole 8 through the hammer body 11 and discharged.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A limestone pre-screening and efficient crushing device, comprising a crusher body (4), a hole is opened on one side of the top of the crusher body (4) and connected to a feed trough (3), and the back of the crusher body (4) adopts an open structure design and is fixedly installed with an inspection cover (2), characterized in that: Also includes: Screen holes (8) are equidistantly arranged at the bottom of the crusher body (4); The sieve hole (8) is located below the discharge direction of the feed trough (3).

2. A limestone pre-screening and efficient crushing device according to claim 1, characterized in that: A transmission shaft (9) is rotatably mounted on the other side of the crusher body (4), telescopic rods (10) are fixedly mounted on the transmission shaft (9) in a circular array, the front end of the transmission shaft (9) passes through the crusher body (4) and is fixedly mounted with a transmission wheel (5), and a support frame (1) is fixedly mounted on the bottom of the crusher body (4).

3. A limestone pre-screening and efficient crushing device according to claim 2, characterized in that: A hammer body (11) is fixedly mounted on one end of the telescopic rod (10) away from the transmission shaft (9).

4. A limestone pre-screening and efficient crushing device according to claim 2, characterized in that: A transmission belt (6) is transmission-mounted on the transmission wheel (5), and a driving mechanism body (7) is transmission-mounted on one end of the transmission belt (6) away from the transmission wheel (5).

5. A limestone pre-screening and efficient crushing device according to claim 4, characterized in that: The driving mechanism body (7) adopts three-phase electric drive, and the driving mechanism body (7) adopts a servo motor structure design.

6. A limestone pre-screening and efficient crushing device according to claim 1, characterized in that: The inspection cover (2) is fixedly mounted to the crusher body (4) via mounting bolts.

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