Closed-type shredder

Abstract

The utility model relates to a closed jaw crusher and relates to the field of material crushing. The utility model provides a closed jaw crushing scheme for the crushing problem of special material with flammability, moisture absorption and oxidation, and the advantage of the utility model lies in that the design of auxiliary gas inlet can accurately control the crushing environment according to the material characteristics, effectively suppresses the combustion, moisture absorption or oxidation deterioration problem of the material caused by factors such as friction and contact with air in the crushing process, and guarantees the quality stability of the special material after crushing. Meanwhile, the equipment adopts a fully-closed structure design, the jaw crushing cabin and the bin cover form a sealed cavity, and the sealing measures such as the sealing rubber strip of the connecting surface are used, so that the crushing process is zero-dust-overflow and zero-pollutant-emission, the dust pollution problem of the traditional jaw crusher is solved from the source, the clean condition of the workshop is obviously improved, and the dust treatment cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of material crushing technology, and in particular to a closed jaw crusher. Background Technology

[0002] Jaw crushers, as a type of equipment that crushes materials through compression, are widely used in mining, building materials, metallurgy, and other industries due to their advantages such as simple structure, large crushing ratio, and strong adaptability. They are used for coarse and medium crushing of various ores, rocks, and solid materials. Most existing jaw crushers adopt an open or semi-open structural design. Their working unit typically includes a support frame, a crushing chamber for accommodating materials, an eccentric assembly for driving the crushing action, and a power unit. After the material enters the crushing chamber through the feeding structure, it is crushed by the relative movement of the moving plate and the fixed plate, and finally discharged through the discharge structure.

[0003] However, when handling materials with special properties such as flammability, moisture, and easy oxidation, the open structure can easily lead to the materials coming into full contact with air and causing deterioration. At the same time, a large amount of dust generated during the crushing process will directly spill out, seriously polluting the workshop environment, endangering the health of operators, and failing to meet stringent environmental emission requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a closed jaw crusher to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A closed-type jaw crusher includes a frame, and the closed-type jaw crusher further includes: The jaw crusher chamber is mounted on the frame, and a cover is detachably connected to its top, forming a closed cavity with the jaw crusher chamber. An eccentric assembly is disposed inside the jaw crusher chamber. The jaw crushing zone is located on the first side of the eccentric assembly inside the jaw crusher chamber, and the dust-generating zone is located on the second side of the eccentric assembly inside the jaw crusher chamber. An electric motor is mounted on the frame and located on one side of the jaw crusher chamber, and its power output end is connected to the eccentric assembly for transmission. A feed hopper, mounted on the bin cover and extending to the top of the jaw crusher compartment; and The discharge hopper is installed on the frame and is connected to the bottom of the jaw crushing zone inside the jaw crusher chamber; The jaw crushing zone consists of a fixed plate installed on the inner wall of the jaw crushing chamber, two side plates installed on the inner wall of the jaw crushing chamber and located on both sides of the fixed plate, and a movable plate installed on the eccentric assembly, wherein the movable plate is opposite to the fixed plate.

[0006] In some embodiments, the eccentric component includes: An eccentric shaft, rotatably mounted within the jaw breaker chamber via two bearing seats, extends one end to the outside of the jaw breaker chamber and is connected to the power output end of the motor via a transmission assembly; and The jaw head is rotatably mounted on the eccentric shaft via two deep groove ball bearings, and the movable plate is mounted on the jaw head.

[0007] In some embodiments, the transmission assembly includes: A driven pulley, which is fitted onto one end of the eccentric shaft extending to the outside of the jaw breaker chamber; and The drive pulley is fitted onto the power output end of the motor; The driven pulley and the driving pulley are connected by a belt drive.

[0008] In some embodiments, the axes of the two deep groove ball bearings and the axes of the two bearing housings are not on the same center line, i.e., they are not on the same axis.

[0009] In some embodiments, the enclosed jaw crusher further includes: The dust collection hopper is installed on the frame and is connected to the bottom of the dust-generating area inside the jaw crusher chamber.

[0010] In some embodiments, a dust collection can is installed at the end of the dust collection hopper away from the jaw crusher chamber.

[0011] In some embodiments, the connection surface between the crater cover and the jaw crusher body is provided with a sealing strip, and the crater cover is detachably connected to the jaw crusher body by a number of evenly distributed bolts.

[0012] In some embodiments, a sanitary-grade flexible sight glass is also provided on the compartment cover, and the sanitary-grade flexible sight glass is welded to the compartment cover.

[0013] The beneficial effects of the technical solution provided by this utility model include at least the following: This invention addresses the challenges of crushing materials with special properties such as flammability, moisture, and oxidizability by providing a closed-loop jaw crusher solution. Its advantage lies in its design, which allows for the introduction of auxiliary gas, enabling precise control of the crushing environment based on material characteristics. This effectively suppresses combustion, moisture absorption, or oxidation caused by friction and contact with air during the crushing process, ensuring the quality stability of crushed materials. Simultaneously, the equipment employs a fully enclosed structural design, with the jaw crusher chamber and cover forming a tight cavity. Combined with sealing strips and other sealing measures at the connection surfaces, this achieves zero dust spillage and zero pollutant emissions during the crushing process, solving the dust pollution problem of traditional jaw crushers at its source, significantly improving workshop cleanliness, and reducing dust control costs. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] Figure 1 The diagram shows a front view of a closed jaw crusher provided in an exemplary embodiment of the present invention.

[0016] Figure 2 The diagram shows a top view of a closed jaw crusher provided in an exemplary embodiment of the present invention.

[0017] In the diagram: 1. Bin cover; 2. Jaw crusher chamber; 3. Eccentric assembly; 3.1. Driven pulley; 3.2. Eccentric shaft; 3.3. Bearing housing; 3.4. Deep groove ball bearing; 3.5. Jaw head; 3.6. Drive pulley; 4.1. Fixed plate; 4.2. Side plate; 4.3. Moving plate; 5. Discharge hopper; 6. Dust hopper; 7. Dust collection tank; 8. Motor; 9. Frame; 10. Feed hopper. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings of this utility model, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This diagram shows a front view of a closed jaw crusher provided in an exemplary embodiment of the present invention. Figure 2This diagram shows a top view of an exemplary embodiment of the closed jaw crusher provided by the present invention. The closed jaw crusher includes: a frame 9; a jaw crushing chamber 2, which is mounted on the frame 9 and has a cover 1 detachably connected to its top, the cover 1 and the jaw crushing chamber 2 forming a closed cavity; an eccentric assembly 3, which is disposed inside the jaw crushing chamber 2, the first side of the jaw crushing chamber 2 located on the eccentric assembly 3 being the jaw crushing zone, and the second side of the jaw crushing chamber 2 located on the eccentric assembly 3 being the dust generation zone; and a motor 8, which is mounted on the frame 9 and located in the jaw crushing chamber 2. On one side, its power output end is connected to the eccentric assembly 3 for transmission; the feed hopper 10 is installed on the cover 1 and extends to the top of the jaw crushing zone inside the jaw crusher chamber 2; and the discharge hopper 5 is installed on the frame 9 and is connected to the bottom of the jaw crushing zone inside the jaw crusher chamber 2; wherein, the jaw crushing zone is composed of a fixed plate 4.1 installed on the inner wall of the jaw crusher chamber 2, two side plates 4.2 installed on the inner wall of the jaw crusher chamber 2 and located on both sides of the fixed plate 4.1, and a moving plate 4.3 installed on the eccentric assembly 3, with the moving plate 4.3 opposite to the fixed plate 4.1.

[0022] In this embodiment, the detachable and enclosed design of the bin cover 1 and the jaw crusher chamber 2 forms a closed cavity and facilitates internal maintenance. The fixed plate 4.1, side plate 4.2, and moving plate 4.3 of the jaw crusher zone constitute the crushing space. The moving plate 4.3 moves with the eccentric assembly 3 to achieve crushing, and the side plate 4.2 prevents material leakage. The motor 8 provides power to the eccentric assembly 3, the feed hopper 10 guides material to the jaw crusher zone, and the discharge hopper 5 connects to the crushed product for discharge.

[0023] In some embodiments, see Figure 2 The eccentric assembly 3 includes: an eccentric shaft 3.2, which is rotatably mounted inside the jaw crusher chamber 2 via two bearing seats 3.3, one end of which extends to the outside of the jaw crusher chamber 2 and is connected to the power output end of the motor 8 via a transmission assembly; and a jaw head 3.5, which is rotatably mounted on the eccentric shaft 3.2 via two deep groove ball bearings 3.4, and a moving plate 4.3 is mounted on the jaw head 3.5.

[0024] It is worth mentioning that the axes of the two deep groove ball bearings 3.4 and the axes of the two bearing housings 3.3 are not on the same center line, that is, they are not on the same axis.

[0025] In this embodiment, the eccentric shaft 3.2 is fixed inside the jaw crusher chamber 2 by two bearing seats 3.3 to ensure its rotational stability and to receive the power of the motor 8 through its extended end. The jaw head 3.5 is connected to the eccentric shaft 3.2 by two deep groove ball bearings 3.4. The misalignment of the bearing seats 3.3 and the deep groove ball bearings 3.4 allows the eccentric shaft 3.2 to drive the jaw head 3.5 to produce a non-uniform oscillating trajectory when it rotates. This trajectory allows the moving plate 4.3 mounted on the jaw head 3.5 to form a highly efficient squeezing action, which, together with the fixed plate 4.1, completes the crushing.

[0026] In some embodiments, see Figure 2 The transmission assembly includes: a driven pulley 3.1, which is sleeved on one end of the eccentric shaft 3.2 extending to the outside of the jaw breaker chamber 2; and a driving pulley 3.6, which is sleeved on the power output end of the motor 8; wherein the driven pulley 3.1 and the driving pulley 3.6 are connected by belt drive.

[0027] In some embodiments, see Figure 1 The enclosed jaw crusher also includes a dust collection hopper 6, which is installed on the frame 9 and connected to the bottom of the dust-generating area inside the jaw crusher chamber 2. A dust collection tank 7 is installed at the end of the dust collection hopper 6 away from the jaw crusher chamber 2.

[0028] In this embodiment, the dust collection hopper 6 is fixed to the frame 9 and located at the bottom of the dust-generating area of ​​the jaw crusher chamber 2. It can quickly collect the dust separated during the crushing process, guiding the dust to collect smoothly and preventing accumulation and blockage within the chamber. The dust collection tank 7 is installed at the end of the dust collection hopper 6, serving as a storage carrier for the dust, enabling centralized collection and unified treatment. This completely solves the problem of dust overflow, improves the workshop working environment, facilitates subsequent dust removal, and reduces environmental protection and maintenance costs.

[0029] In some embodiments, a sealing strip is provided on the connection surface between the cover 1 and the jaw crusher body 2, and the cover 1 is detachably connected to the jaw crusher body 2 by a number of evenly distributed bolts.

[0030] In some embodiments, a sanitary removable sight glass is also provided on the compartment cover 1, and the sanitary removable sight glass is welded to the compartment cover 1.

[0031] In this embodiment, staff can observe the material crushing status in the jaw crusher area in real time through a sanitary-grade flexible viewing mirror without opening the bin cover 1, which facilitates timely detection of problems such as material jamming and component wear, and improves the convenience of operation and maintenance.

[0032] Next, the working principle of a closed jaw crusher involved in the embodiments of this utility model will be explained.

[0033] After the equipment starts, the power of motor 8 is transmitted via drive pulley 3.6 and belt to driven pulley 3.1 at the end of eccentric shaft 3.2, driving eccentric shaft 3.2 to rotate stably within two bearing seats 3.3. Because the deep groove ball bearing 3.4 is not coaxial with the bearing seat 3.3, eccentric shaft 3.2 drives jaw head 3.5 to oscillate at a non-uniform speed, causing the moving plate 4.3 installed on jaw head 3.5 to reciprocate and squeeze against the fixed plate 4.1 in the jaw crushing zone. The side plates 4.2 on both sides prevent material leakage. The material is fed into the jaw crusher zone through the feed hopper 10 on the bin cover 1. It is crushed under the pressure of the moving plate 4.3 and the fixed plate 4.1. The crushing status can be monitored in real time by the sanitary movable sight glass on the bin cover 1. The dust generated by crushing naturally settles into the dust area on the other side of the eccentric component 3. After being collected by the dust collection hopper 6 connected to the dust area, it is fed into the dust collection tank 7 at the end for centralized storage. The crushed finished material is discharged from the bottom of the jaw crusher zone through the discharge hopper 5. The whole process achieves zero pollution operation.

[0034] In summary, this invention provides a closed-loop jaw crusher solution to address the crushing challenges of materials with special properties such as flammability, moisture susceptibility, and oxidizability. Its advantage lies in its design, which allows for the introduction of auxiliary gas, enabling precise control of the crushing environment based on material characteristics. This effectively suppresses combustion, moisture absorption, or oxidation caused by friction and contact with air during the crushing process, ensuring the quality stability of crushed materials. Furthermore, the equipment employs a fully enclosed structural design, with the jaw crusher chamber and cover forming a tight cavity. Combined with sealing measures such as sealing strips at the connection surfaces, this achieves zero dust spillage and zero pollutant emissions during the crushing process, solving the dust pollution problem of traditional jaw crushers at its source, significantly improving workshop cleanliness, and reducing dust control costs.

[0035] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A closed jaw crusher, comprising a frame (9), characterized in that, The enclosed jaw crusher also includes: Jaw breaker compartment (2), which is installed on the frame (9), and a compartment cover (1) is detachably connected to its top. The compartment cover (1) and the jaw breaker compartment (2) form a closed cavity. An eccentric component (3) is disposed inside the jaw crusher chamber (2). The jaw crushing area is located on the first side of the eccentric component (3) inside the jaw crusher chamber (2), and the dust-generating area is located on the second side of the eccentric component (3) inside the jaw crusher chamber (2). The motor (8) is mounted on the frame (9) and located on one side of the jaw crusher (2), and its power output end is connected to the eccentric assembly (3) for transmission. A feed hopper (10), which is mounted on the bin cover (1) and extends to the top of the jaw crusher area within the jaw crusher chamber (2); and The discharge hopper (5) is installed on the frame (9) and is connected to the bottom of the jaw crusher area inside the jaw crusher chamber (2); The jaw crushing area is composed of a fixed plate (4.1) installed on the inner wall of the jaw crushing chamber (2), two side plates (4.2) installed on the inner wall of the jaw crushing chamber (2) and located on both sides of the fixed plate (4.1), and a movable plate (4.3) installed on the eccentric assembly (3). The movable plate (4.3) is opposite to the fixed plate (4.1).

2. The enclosed jaw crusher according to claim 1, characterized in that, The eccentric component (3) includes: An eccentric shaft (3.2), rotatably mounted inside the jaw breaker chamber (2) via two bearing seats (3.3), extends one end to the outside of the jaw breaker chamber (2) and is connected to the power output end of the motor (8) via a transmission assembly; and The jaw head (3.5) is rotatably mounted on the eccentric shaft (3.2) via two deep groove ball bearings (3.4), and the movable plate (4.3) is mounted on the jaw head (3.5).

3. The enclosed jaw crusher according to claim 2, characterized in that, The transmission assembly includes: Driven pulley (3.1), which is sleeved on one end of the eccentric shaft (3.2) extending to the outside of the jaw breaker chamber (2); and The drive pulley (3.6) is sleeved on the power output end of the motor (8); The driven pulley (3.1) and the driving pulley (3.6) are connected by belt drive.

4. The enclosed jaw crusher according to claim 2, characterized in that, The axes of the two deep groove ball bearings (3.4) and the axes of the two bearing housings (3.3) are not on the same center line, i.e., they are not on the same axis.

5. The enclosed jaw crusher according to claim 1, characterized in that, The enclosed jaw crusher also includes: The dust collection hopper (6) is installed on the frame (9) and is connected to the bottom of the dust-generating area inside the jaw crusher (2).

6. The enclosed jaw crusher according to claim 5, characterized in that, The dust collection hopper (6) is equipped with a dust collection tank (7) at the end away from the jaw crusher body (2).

7. The enclosed jaw crusher according to claim 1, characterized in that, The connection surface between the cover (1) and the jaw crusher body (2) is provided with a sealing strip. The cover (1) is detachably connected to the jaw crusher body (2) by a number of evenly distributed bolts.

8. The enclosed jaw crusher according to claim 1, characterized in that, The compartment cover (1) is also provided with a sanitary-grade flexible sight glass, which is welded to the compartment cover (1).

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