A replaceable jaw plate used in jaw crusher

Abstract

This invention provides a replaceable jaw plate for use in a jaw crusher. The main working components of the jaw crusher include a movable jaw plate and a fixed replaceable jaw plate. The replaceable jaw plate includes a base plate and a movable plate. The base plate has multiple grooves evenly distributed, and the left and right sides of the grooves have outwardly extending fixing grooves. The extension direction of the fixing grooves is perpendicular to the left and right sides of the grooves. The center of the top of each side of the movable plate is provided with a fixing block, which is fixedly connected to the fixing groove by a screw and nut structure. The upper surface of the fixing block has multiple protrusions. This invention achieves the function of replacing part of the jaw plate by adding multiple detachable movable plates to the base plate. Only the movable plates with more wear are replaced, while the movable plates with minor wear are retained, avoiding the need for the factory to replace the entire jaw plate, reducing the cost of replacing jaw plates. At the same time, the protrusions on the movable plates improve the crushing effect.

Description

Technical Field

[0001] This invention relates to the field of crushers, and more particularly to replaceable fixed tooth plates for crushers. Background Technology

[0002] Tailings have become a common industrial product with abundant output. They typically contain recyclable metals such as manganese and iron. Complete disposal would result in a significant waste of these metal resources, necessitating tailings recycling. However, metal tailings recycling requires crushing, and conventional crushers have the following drawbacks:

[0003] 1. Metal-containing tailings have high hardness. When the jaw crusher is working, the hard tailings can easily cause wear on the moving and fixed jaw plates, leading to damage to the jaw plates.

[0004] 2. When a jaw crusher is in operation, due to its working principle, the wear on the lower end of the jaw plate is much more severe than that on the upper end. If the lower end of the jaw plate is more worn while the upper end is only slightly worn, replacing the entire jaw plate will increase the factory's replacement cost. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a replaceable jaw plate for use in jaw crushers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a replaceable jaw plate for a jaw crusher. The main working components of the jaw crusher include a movable jaw plate and a fixed replaceable jaw plate. The replaceable jaw plate includes a base plate and a movable plate. The base plate is uniformly provided with a plurality of concave cubic grooves. At the center of the top of the left and right sides of the grooves, there are outwardly extending fixing grooves. The extending direction of the fixing grooves is perpendicular to the left and right sides of the grooves. At the center of the top of the two sides of the movable plate, there are corresponding fixing blocks. The fixing blocks are fixedly connected to the fixing grooves by a screw and nut structure. The upper surface wall of the fixing blocks is provided with a plurality of protrusions. The shape of the grooves is adapted to the shape of the movable plate. The depth and width of the fixing grooves are both smaller than the depth and width of the grooves. The size of the fixing blocks is adapted to the size of the fixing grooves.

[0007] Preferably, the protrusion is a solid frustum structure, the lower bottom surface of the protrusion is fixedly connected to the upper end surface of the movable plate, and multiple protrusions are arranged alternately on the movable plate, with the protrusions in the second row located between the protrusions in the first row, the protrusions in the third row located between the protrusions in the second row, and so on.

[0008] Preferably, the height of the protrusions on each movable plate gradually increases from the center of the movable plate to the surrounding area, and the overall protrusions on the entire movable plate are basin-shaped, that is, the height of the protrusions on the movable plate is concave in the middle and convex around the edges.

[0009] Preferably, the side of the protrusion is formed by folding multiple disc-shaped protrusions with different inner diameters from top to bottom according to the inner diameter from small to large, and the height of a single protrusion is between 1mm and 2mm.

[0010] Preferably, the abundance of the protrusions gradually increases from the upper end of the base plate downwards, and the number of protrusions on the movable plate at the lower end of the base plate is greater than the number of protrusions on the movable plate at the upper end of the base plate.

[0011] Preferably, both the movable plate and the base plate are high-manganese steel plates.

[0012] Preferably, the distance between the movable plates gradually decreases from the upper end of the base plate to the lower end of the base plate, and the distance between the movable plates at the lower end of the base plate is less than the distance between the movable plates at the upper end of the base plate.

[0013] Preferably, a diversion baffle is fixedly provided on the base plate. The diversion baffle is located at the center between the four adjacent grooves. The diversion baffle has a triangular plate structure. The left and right sides of the diversion baffle are inwardly concave arc-shaped sides. The length of the straight bottom edge of the diversion baffle is greater than the distance between two adjacent grooves.

[0014] Preferably, the height of the sharp corner at the front end of the diversion baffle is greater than the height of the straight end at the rear end of the diversion baffle.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The protrusions on the movable plate effectively reduce the contact area between the tailings and the fixed tooth plate. When the tailings fall into the crushing chamber, they first collide with the protrusions, and only then will the crushed small particles come into contact with the jaw plate, which indirectly reduces the wear of the jaw plate.

[0017] 2. The movable plate can be replaced and installed on the fixed tooth plate. Only the movable plate with greater wear can be replaced, while the movable plate with less wear can be retained. Compared with replacing the entire jaw plate, this reduces replacement costs and increases the factory's economic benefits.

[0018] 3. The raised, rounded sides can prevent crushed materials from accumulating on the moving plate during the crushing process, thus avoiding the accumulation of fine tailings ash on the moving plate and hindering the crushing effect. Attached Figure Description

[0019] Figure 1This is a three-dimensional schematic diagram of a replaceable jaw plate of the present invention applied to a jaw crusher;

[0020] Figure 2 This is a schematic diagram of a movable plate of a replaceable jaw plate applied to a jaw crusher according to the present invention.

[0021] Figure 3 This is a schematic diagram of a replaceable jaw plate protrusion used in a jaw crusher according to the present invention. Detailed Implementation

[0022] To provide a further understanding of the purpose, structure, features, and functions of the present invention, detailed descriptions are provided below with reference to specific embodiments.

[0023] Please refer to the reference. Figure 1 as well as Figure 2 This invention provides a replaceable jaw plate for use in a jaw crusher. The main working components of the jaw crusher include a movable jaw plate and a fixed replaceable jaw plate. The replaceable jaw plate includes a base plate 1 and a movable plate 2. The base plate 1 is evenly provided with a plurality of concave cubic grooves 3. The center of the top of the left and right sides of the grooves 3 is provided with outwardly extending fixing grooves 4. The extension direction of the fixing grooves 4 is perpendicular to the left and right sides of the grooves 3. The center of the top of the two sides of the movable plate 2 is provided with corresponding fixing blocks 5. The fixing blocks 5 are fixedly connected to the fixing grooves 4 by a screw and nut structure. The upper surface wall of the fixing blocks 5 is provided with a plurality of protrusions 6. The shape of the grooves 3 is adapted to the shape of the movable plate 2. The depth and width of the fixing grooves 4 are both smaller than the depth and width of the grooves 3. The size of the fixing blocks 5 is adapted to the size of the fixing grooves 4.

[0024] This invention achieves the function of replacing part of the jaw plate by adding multiple detachable movable plates 2 to the base plate 1. Only the movable plates 2 with more wear are replaced, while the movable plates 2 with minor wear are retained, thus avoiding the need for the factory to replace the entire jaw plate and reducing the cost of replacing the jaw plate in the factory.

[0025] Furthermore, the protrusions 6 covering the movable plate 2 reduce the contact area between the tailings and the movable plate 2, increasing the pressure on the surface of the tailings under the same pressure. Compared with a flat jaw plate, it is easier to crush harder metal-containing tailings.

[0026] Furthermore, the groove 3 and the movable plate 2 can be a parallelogram structure that fits together, and the inclined surface faces the lower end of the bottom plate 1. This ensures that when tailings ash enters the gap between the movable plate 2 and the groove 3, the inclined surface of the movable plate 2 prevents the tailings ash from accumulating in the gap between the movable plate 2 and the groove 3, thus avoiding damage caused by the tailings ash expanding the movable plate 2.

[0027] In addition, the depth of the groove 3 is less than half the width of the bottom plate 1, ensuring that the movable plate 2 will not be deformed by the tailings squeezing from the left and right.

[0028] Preferably, the fixing block 5 has a receiving cavity and a through hole inside. The inner diameter of the receiving cavity is larger than the inner diameter of the through hole. The height of the receiving cavity is the same as the height of the nut. The nut used to fix the movable plate 2 can be completely placed in the receiving cavity, so that the nut only bears radial force and will not be squeezed by the tailings from the left and right, causing the thread to slip.

[0029] Preferably, the protrusion 6 is a solid frustum structure, the bottom surface of the protrusion 6 is fixedly connected to the upper end surface of the movable plate 2, and multiple protrusions 6 are arranged in an alternating manner on the movable plate 2, with the protrusions 6 in the second row located between the protrusions 6 in the first row, the protrusions 6 in the third row located between the protrusions 6 in the second row, and so on.

[0030] Compared to row-and-column arrangement, the staggered arrangement of protrusions 6 can crush tailings on the entire surface of the movable plate 2, while the row-and-column arrangement of protrusions 6 has certain gaps that cannot crush tailings. The staggered arrangement improves the crushing efficiency of the entire movable plate 2 for tailings.

[0031] Preferably, the height of the protrusions 6 on each movable plate 2 gradually increases from the center of the movable plate 2 to the surrounding area, and the overall protrusions 6 on the movable plate 2 are basin-shaped, that is, the height of the protrusions 6 on the movable plate 2 is concave in the middle and convex around the edges.

[0032] The basin-shaped protrusion 6 is more likely to contain larger tailings. The tailings will slide into the center of the movable plate 2 due to the height difference of the protrusion 6 and be crushed. At the same time, it will protect the upper surface of the bottom plate 1 and reduce the contact between the upper surface of the bottom plate 1 and the tailings.

[0033] Preferably, the side of the protrusion 6 is formed by folding multiple disc-shaped protrusions with different inner diameters from top to bottom according to the inner diameter from small to large, and the height of a single protrusion is between 1mm and 2mm.

[0034] During the crushing process, some irregular tailings cannot reach the top surface of protrusion 6, causing them to roll only on the side of protrusion 6, resulting in poor crushing effect. At this time, the stepped sides of multiple protrusions 6 provide fixed points protruding in various directions for the tailings, so that the irregular tailings can be stuck and squeezed to complete the crushing and improve the crushing effect.

[0035] Preferably, the abundance of protrusions 6 gradually increases from the upper end of the base plate 1 downwards, and the number of protrusions 6 on the movable plate 2 located at the lower end of the base plate 1 is greater than the number of protrusions 6 on the movable plate 2 located at the upper end of the base plate 1.

[0036] The number of protrusions 6 on the upper end of the base plate 1 is less than the number of protrusions 6 on the lower end of the base plate 1, because the wear intensity at the lower end of the base plate 1 is much greater than that at the upper end of the base plate 1. Therefore, by rationally arranging the number of protrusions 6, the wear resistance of the lower end of the base plate 1 can be improved, and the cost required to manufacture the protrusions 6 can be reduced.

[0037] In addition, after the tailings are roughly crushed by the fewer protrusions 6 at the top of the bottom plate 1, the larger tailings have been crushed into smaller tailings. At this point, it is more suitable to use the denser protrusions 6 to further crush the smaller tailings, thereby improving the crushing effect and reducing the wear on the bottom of the bottom plate 1.

[0038] Preferably, both the movable plate 2 and the base plate 1 are high-manganese steel plates with high hardness. High-manganese steel has high hardness, which can effectively enhance the wear resistance of the movable plate 2 and the base plate 1 compared with ordinary alloys.

[0039] Preferably, the distance between the movable plates 2 gradually decreases from the upper end of the base plate 1 to the lower end of the base plate 1, and the distance between the movable plates 2 at the lower end of the base plate 1 is less than the distance between the movable plates 2 at the upper end of the base plate 1.

[0040] Since the amount of wear on the lower end of the base plate 1 is much greater than that on the upper end of the base plate 1, more movable plates 2 are required at the lower end of the base plate 1. Reducing the distance between the movable plates 2 at the lower end of the base plate 1 reduces the surface area of ​​the lower end of the base plate 1, reduces the wear on the surface of the base plate 1, and increases the number of movable plates 2, thereby improving the crushing efficiency.

[0041] Preferably, a diversion baffle 7 is fixedly provided on the base plate 1. The diversion baffle 7 is located at the center between four adjacent grooves 3. The diversion baffle 7 has a triangular plate structure. The left and right sides of the diversion baffle 7 are inwardly concave arc-shaped sides. The length of the straight bottom edge of the diversion baffle 7 is greater than the distance between two adjacent grooves 3.

[0042] Diversion baffle 7 is used to divert the tailings after crushing by the upper row of movable plates 2 to the lower row of movable plates 2 for crushing, thereby reducing the wear on the surface between two adjacent grooves 3 on the bottom plate 1 when most of the tailings slide down, and improving the working life of the bottom plate 1.

[0043] Preferably, the height of the sharp corner at the front end of the diversion baffle 7 is greater than the height of the straight end at the rear end of the diversion baffle 7. Since the fixed jaw plates of the jaw crusher are generally inclined, the diversion baffle 7 with a larger front end height can better divert the tailings flow compared with the flat diversion baffle 7, ensuring that most of the tailings are diverted by the diversion baffle 7 to the next row of movable plates 2 for crushing.

[0044] The optimal length of the straight bottom edge of the diversion baffle 7 is such that the landing point of the parabola of the tailings flow as it slides down the diversion baffle 7 is located at the center of the movable plate 2 in the next row. Therefore, the length of the diversion baffle 7 in each row is different, which ensures that each diversion baffle 7 can reasonably divert the tailings flow to the movable plate 2 in the next row, thereby improving the diversion efficiency.

[0045] In practical use, the movable plate 2 is installed in the groove 3 of the base plate 1 using a screw and nut structure. The nuts are tightened until they are completely submerged in the large through hole. The installed base plate 1 is then installed on the fixed jaw plate of the jaw crusher. When the crusher is working, large tailings are crushed into smaller tailings by the relatively scattered protrusions 6 on the movable plate 2 at the upper end of the base plate 1. Because the top area of ​​the protrusions 6 is small, the pressure on the tailings is relatively large, which can also achieve a good crushing effect for tailings with high hardness. Afterwards, the smaller tailings are diverted to the movable plates 2 on the lower left and right sides by the diversion baffles 7, and from the lower end... The densely distributed protrusions 6 on the movable plate 2 further crush small tailings. At this time, the multi-layered sides of the protrusions 6 are used to fix some irregular tailings blocks, preventing them from rolling on the sides of the protrusions 6 and reducing the crushing effect. After the tailings are crushed by the dense protrusions 6 at the lower end of the bottom plate 1, the large and hard tailings are finally crushed into tailings particles that meet the requirements. When the movable plate 2 is heavily worn, the bottom plate 1 can be removed from the crusher, and the heavily worn movable plate 2 can be removed, while the less worn movable plate 2 is retained, which reduces the plant's replacement costs and improves the plant's economic benefits.

[0046] As described above, the present invention overcomes the problem that the jaw plates of a jaw crusher are very prone to wear when crushing metal-containing tailings by setting a replaceable movable plate 2 on the base plate 1 and a protrusion 6 on the movable plate 2, and solves the problem of high cost of replacing jaw plates in the factory.

[0047] The present invention has been described in the above-described embodiments; however, these embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. Conversely, any modifications and refinements made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A replaceable jaw plate for use in a jaw crusher, wherein the main working parts of the jaw crusher include a movable jaw plate and a fixed replaceable jaw plate, characterized in that: The replaceable jaw plate includes a base plate (1) and a movable plate (2). The base plate (1) is evenly provided with a plurality of concave cubic grooves (3). The center of the top of the left and right sides of the grooves (3) is provided with outwardly extending fixing grooves (4). The extension direction of the fixing grooves (4) is perpendicular to the left and right sides of the grooves (3). The center of the top of the two sides of the movable plate (2) is provided with corresponding fixing blocks (5). The fixing blocks (5) are fixedly connected to the fixing grooves (4) by a screw and nut structure. The upper surface wall of the movable plate (2) is provided with a plurality of protrusions (6). The shape of the grooves (3) is adapted to the shape of the movable plate (2). The depth and width of the fixing grooves (4) are... All are smaller than the depth and width of the groove (3), and the size of the fixing block (5) is adapted to the size of the fixing groove (4); the height of the protrusion (6) on each movable plate (2) gradually increases from the center of the movable plate (2) to the surrounding area, and the overall protrusion (6) on the entire movable plate (2) is basin-shaped, that is, the height of the protrusion (6) on the movable plate (2) is concave in the middle and convex around the edges; the distance between the movable plates (2) gradually decreases from the upper end of the base plate (1) to the lower end of the base plate (1), and the distance between the movable plates (2) at the lower end of the base plate (1) is smaller than the distance between the movable plates (2) at the upper end of the base plate (1).

2. The replaceable jaw plate for a jaw crusher as described in claim 1, characterized in that: The protrusion (6) is a solid frustum structure. The bottom surface of the protrusion (6) is fixedly connected to the upper surface of the movable plate (2). Multiple protrusions (6) are arranged alternately on the movable plate (2). The protrusions (6) in the second row are located between the gaps of the protrusions (6) in the first row, the protrusions (6) in the third row are located between the gaps of the protrusions (6) in the second row, and so on.

3. The replaceable jaw plate for a jaw crusher as described in claim 1, characterized in that: The side of the protrusion (6) is formed by folding multiple disc-shaped protrusions with different inner diameters from top to bottom according to the inner diameter from small to large. The height of a single protrusion is between 1mm and 2mm.

4. A replaceable jaw plate for use in a jaw crusher as described in claim 3, characterized in that: The degree of enrichment of the protrusions (6) gradually increases from the upper end of the base plate (1) downwards, and the number of protrusions (6) on the movable plate (2) located at the lower end of the base plate (1) is greater than the number of protrusions (6) on the movable plate (2) at the upper end of the base plate (1).

5. A replaceable jaw plate for use in a jaw crusher as described in claim 1, characterized in that: Both the movable plate (2) and the base plate (1) are high manganese steel plates.

6. A replaceable jaw plate for use in a jaw crusher as described in claim 1, characterized in that: A diversion baffle (7) is fixedly provided on the base plate (1). The diversion baffle (7) is located at the center between four adjacent grooves (3). The diversion baffle (7) is a triangular plate structure. The left and right sides of the diversion baffle (7) are inwardly concave arc-shaped sides. The length of the straight bottom edge of the diversion baffle (7) is greater than the distance between two adjacent grooves (3).

7. A replaceable jaw plate for use in a jaw crusher as described in claim 6, characterized in that: The height of the sharp corner at the front end of the diversion baffle (7) is greater than the height of the straight end at the rear end of the diversion baffle (7).

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