A limestone crusher

Abstract

This utility model belongs to the field of lime production and provides a limestone crusher. The limestone crusher includes a housing with an inlet at the top and an outlet at the bottom. A crushing chamber is located inside the housing, and a crushing mechanism is installed within the crushing chamber. The crushing mechanism includes a key shaft rotatably mounted inside the housing. Several crushing seats are inserted through the key shaft, and locking discs are inserted at both ends of the key shaft. Two locking discs are locked together by multiple tie screws. Each crushing seat has multiple crushing arms formed along its circumference. When crushing limestone, the driven wheel drives the key shaft to rotate, and the crushing arms and crushing heads rotate together with the crushing seats. Limestone enters the housing through the inlet and is crushed by the rotating crushing heads. After being screened by a sieve, limestone that meets the particle size requirements is discharged from the outlet. Limestone that does not meet the particle size requirements remains on the sieve and continues to be crushed by the crushing mechanism until it meets the particle size requirements and is then discharged.

Description

Technical Field

[0001] This utility model belongs to the field of lime production, and in particular relates to a limestone crusher. Background Technology

[0002] Limestone is a fundamental raw material for industries such as building materials, chemical smelting, and more, and its crushing and processing is crucial to subsequent production efficiency and product quality. Currently, limestone crushing equipment is mainly divided into jaw crushers, cone crushers, and impact crushers, but many technical challenges remain in practical applications.

[0003] Traditional crushers often use an integral rotor structure for their crushing mechanism. When the crushing parts show localized wear, the entire unit needs to be replaced, resulting in high maintenance costs and long downtime that affects production continuity. Furthermore, the fixed impact angle between the crushing arm and the material easily leads to low crushing efficiency and high energy consumption, especially with high-hardness limestone, where insufficient crushing often results in uneven particle size in the finished product. Utility Model Content

[0004] In view of the above problems, the purpose of this utility model is to overcome the defects of existing limestone crushers, such as low crushing efficiency, easy wear of parts, and inconvenient maintenance, and to provide a limestone crusher with reasonable structure, high crushing efficiency, and convenient maintenance.

[0005] The limestone crusher includes a housing with an inlet at the top and an outlet at the bottom. A crushing chamber is located inside the housing, and a crushing mechanism is installed within the crushing chamber. The crushing mechanism includes a key shaft rotatably mounted inside the housing. Several crushing seats are inserted through the key shaft, and locking discs are inserted at both ends of the key shaft. Two locking discs are locked together by multiple tie rods. Each crushing seat has multiple crushing arms arranged circumferentially, with adjacent crushing arms staggered. A crushing head is located on the inner side of each crushing arm, and a driven wheel is located at one end of the key shaft.

[0006] Furthermore, a positioning groove is formed on the key shaft, and a convex key matching the positioning groove is provided at the inner opening of the crushing seat.

[0007] Furthermore, both the left and right sides of the crushing seat have inward-facing weight-reducing ring openings.

[0008] Furthermore, the crushing box includes an impact plate installed sequentially above the box body and a screening frame installed below the box body. An impact assembly is also provided between the screening frame and the impact plate. The impact assembly includes an impact frame rotatably installed inside the box body. An impact arm is provided on the impact frame. A pair of guide rods are rotatably provided on the back of the impact arm. The ends of the guide rods extend out of the box body and are limited. A strong spring is also sleeved on the guide rods between the box body and the impact arm.

[0009] Furthermore, a guide plate is provided on the upper edge of the box body directly opposite the feed inlet.

[0010] The beneficial effects of this utility model are:

[0011] 1. By setting a positioning groove on the key shaft and a convex key inside the crushing seat, and by using a locking disc and pull screw to lock, the connection stability between the crushing seat and the key shaft is effectively improved, preventing the crushing seat from loosening during operation and ensuring the accuracy and stability of crushing.

[0012] 2. By opening a weight-reducing ring on the crushing seat, the weight of the crushing seat is reduced, the energy consumption during equipment operation is reduced, the operating cost is lowered, and the load on the key shaft and other supporting components is reduced, thus extending the service life of the equipment.

[0013] 3. A guide plate is installed inside the chamber, directly opposite the upper edge of the feed inlet, to guide the limestone accurately into the crushing mechanism and prevent it from accumulating at the feed inlet. The screening frame can screen the crushed limestone to ensure that the particle size of the crushed product meets the requirements. The impact component further improves the crushing effect, making the limestone crushed more thoroughly. Attached Figure Description

[0014] Figure 1 This utility model provides an overall drawing of a limestone crusher.

[0015] Figure 2 This utility model provides an internal schematic diagram of a limestone crusher.

[0016] Figure 3 This utility model provides a schematic diagram of a crushing mechanism.

[0017] Figure 4 This utility model provides a schematic diagram of the installation of the crusher seat. Detailed Implementation

[0018] To make the purpose, technical solution, and advantages of this utility model patent clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0020] For ease of explanation, only the parts relevant to the embodiments of this utility model are shown.

[0021] Combination Figure 1-4As shown, the limestone crusher includes a housing 1 with an inlet 2 at the top and an outlet 3 at the bottom. A crushing chamber is located inside the housing 1, and a crushing mechanism is installed within the crushing chamber. The crushing mechanism includes a key shaft 4 rotatably mounted inside the housing 1. Several crushing seats 5 are inserted through the key shaft 4, and locking discs 6 are inserted at both ends of the key shaft 4. Two locking discs are locked together by multiple tie rods 7. Each crushing seat 5 has multiple crushing arms 8 arranged circumferentially, with adjacent crushing arms 8 staggered. A crushing head 9 is located on the inner side of each crushing arm 8. A driven wheel 10 is located at one end of the key shaft 4. In practice, the driven wheel can be connected to the driving wheel on the motor via a belt to provide power for the rotation of the key shaft.

[0022] In this structure, the key shaft, as the core transmission component of the crushing mechanism, provides rotational power to the crushing seats, and several crushing seats are inserted through the key shaft. For example... Figure 4 To ensure a stable connection between the crusher and the key shaft, a positioning groove 11 is formed on the key shaft 4, and a convex key 12 matching the positioning groove is provided at the inner opening of the crusher 5. The cooperation between the convex key and the positioning groove effectively prevents axial and circumferential sliding of the crusher on the key shaft, improving the reliability of the connection between the crusher and the key shaft and ensuring the accuracy and stability of the crushing process.

[0023] Locking discs are inserted into both ends of the key shaft, and the two locking discs are locked together by multiple tie rods. This locking method further enhances the fixation of the crusher seat on the key shaft, prevents the crusher seat from loosening during high-speed rotation, and ensures stable operation of the crushing mechanism.

[0024] When using this crusher to crush limestone, the motor drives the driven wheel to rotate via a belt. The driven wheel then drives the key shaft to rotate, and the crushing arm and crushing head rotate together with the crushing base. Limestone enters the housing through the feed inlet and is crushed by the rotating crushing head. The crushed limestone continues to move downwards and is screened by a screen frame. Limestone that meets the particle size requirements is discharged from the outlet, while limestone that does not meet the particle size requirements remains on the screen frame and continues to be crushed by the crushing mechanism until it meets the particle size requirements and is then discharged.

[0025] The crushing seat has inward-facing weight-reducing ring openings 13 on both its left and right sides. By opening a pair of weight-reducing ring openings on the left and right sides of the crushing seat, the weight of the crushing seat can be significantly reduced, thereby reducing the energy consumption during equipment operation.

[0026] As a preferred structure, such as Figure 2The crushing box includes an impact plate 14 installed above the box body 1 and a screening frame 15 installed below the box body 1. An impact assembly is also provided between the screening frame 15 and the impact plate 14. The impact assembly includes an impact frame 16 inside the rotating box body. An impact arm 17 is provided on the impact frame. A pair of guide rods 18 are rotatably provided on the back of the impact arm 17. The ends of the guide rods 18 pass through the box body 1 and are limited. A strong spring 19 is also sleeved on the guide rods 18 between the box body and the impact arm.

[0027] During crushing, when the impact arm is subjected to impact force, the powerful spring on the guide rod is compressed, producing elastic deformation, absorbing part of the impact energy and playing a buffering role. At the same time, the elastic restoring force of the powerful spring can cause the impact arm to rebound to a certain extent, enhancing the crushing effect on the material.

[0028] In addition, such as Figure 1 Inside the housing 1, a guide plate 20 is provided along the upper edge directly opposite the feed inlet 2. The function of the guide plate is to evenly guide the material entering from the feed inlet into the crushing chamber, ensuring uniform material distribution within the crushing chamber, thereby ensuring uniform force on the crushing mechanism and improving the uniformity and quality of crushing. It also prevents crushed stone from splashing out of the feed inlet during the crushing process.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A limestone crusher characterized by: The limestone crusher includes a housing with an inlet at the top and an outlet at the bottom. A crushing chamber is located inside the housing, and a crushing mechanism is installed within the crushing chamber. The crushing mechanism includes a key shaft rotatably mounted inside the housing. Several crushing seats are inserted through the key shaft, and locking discs are inserted at both ends of the key shaft. Two locking discs are locked together by multiple tie rods. Each crushing seat has multiple crushing arms arranged circumferentially, with adjacent crushing arms staggered. A crushing head is located on the inner side of each crushing arm, and a driven wheel is located at one end of the key shaft.

2. A limestone crusher as claimed in claim 1, wherein: A positioning groove is formed on the key shaft, and a convex key matching the positioning groove is provided at the inner opening of the crushing seat.

3. A limestone crusher as claimed in claim 2, wherein: The crushing seat has weight-reducing ring openings on both the left and right sides facing inward.

4. A limestone crusher as claimed in claim 3 wherein: The crushing box includes an impact plate installed on the top of the box and a screening frame installed on the bottom of the box. An impact assembly is also provided between the screening frame and the impact plate. The impact assembly includes an impact frame rotatably installed inside the box. An impact arm is provided on the impact frame. A pair of guide rods are rotatably provided on the back of the impact arm. The ends of the guide rods pass through the box and are limited. A strong spring is also sleeved on the guide rods between the box and the impact arm.

5. The limestone crusher as described in claim 4, characterized in that: A guide plate is provided on the upper edge of the box body, directly opposite the feed inlet.

Images