A gyratory crusher single-piece fixed cone liner filling method and filling device

Abstract

The application discloses a gyratory crusher single-block fixed-cone lining plate filling method and a filling device, and relates to the technical field of gyratory crusher repair. The application fixes the fallen fixed-cone lining plate through the wedge-welding-filling mode, reduces the possibility of the lining plate falling again, and shortens the repair time. Through the filling device, the poor flowability of the epoxy resin backing can be solved by compressing air into the tank body, the filling speed of the epoxy resin backing is accelerated, and the workload and personnel configuration for repairing the fallen fixed-cone lining plate are reduced.

Description

Technical Field

[0001] This invention relates to the field of gyratory crusher repair technology, and in particular to a method and device for filling a single fixed cone liner plate of a gyratory crusher. Background Technology

[0002] Gyratory crushers typically use a rotating moving cone to cause the ore in the crushing chamber to collide with the moving and fixed cones, thereby achieving the purpose of crushing the ore. When a gyratory crusher operates at full load for a long time, the ore in the crushing chamber will have a radial impact on the fixed cone liner of the gyratory crusher, causing some of the fixed cone liner backing to peel off. When a single piece of the fixed cone liner becomes loose, the entire liner layer needs to be removed and refilled with epoxy resin backing, which is not only time-consuming and costly to maintain, but also affects the stable production of the system. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a method and apparatus for filling a single fixed cone liner plate of a gyratory crusher, which solves the problem that existing gyratory crusher liners cannot achieve single-piece repair when loose.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: A method for filling a single fixed cone liner of a gyratory crusher includes the following steps: S1, after cleaning the loosened cone liner, the ore between the cone liner and the cone is removed. After removing or relocating the loose or fallen cone liner, use a flat shovel and angle grinder to remove the fallen cone liner, the minerals attached to the cone, and the residual epoxy resin backing. Blow the fallen cone liner and the surface of the cone through the air outlet of the filling device to remove fine minerals and dust. S2, weld lifting lugs to the front of the fallen cone liner, hoist the fallen cone liner back to its original position, and place it back in. Cut wedge strips, the thickness and width of which correspond to the gap thickness and width of the gyratory crusher cone liner. The wedge strips are made of Q235B material. Wed the wedge strips into the gaps between the cone liners, and fix the wedge strips to the adjacent cone liners by welding. After the weld has cooled, seal the remaining gaps with sealant and then use aluminum foil strips to adhere the gaps. S3, fill the epoxy resin in the filling device onto the falling fixed cone liner; S4. Observe the epoxy resin filling in the gap above the fixed cone liner. Ensure that the epoxy resin is evenly filled in the fixed cone liner and the gap between the fixed cone. When you see the epoxy resin spread to the top gap of the fixed cone liner, the filling is complete. S5. After filling is completed, a wedge strip is inserted into the gap above the filling cone liner. The thickness and width of the wedge strip correspond to the gap of the cone liner. The material of the wedge strip is Q235B. After the wedge strip is inserted, tin foil is pasted at the gap to prevent dust and debris from entering. S6. After the above process is completed, let it stand for 24 hours to allow the epoxy resin to solidify. S7. After the epoxy resin has completely solidified, conduct an inspection and test run. Tap the repaired cone liner with a hollow hammer, and then conduct a test run with ore to observe whether the repaired cone liner has loosened or shifted during the ore crushing process.

[0005] In step S1, the air pressure at the outlet is greater than 0.6 MPa.

[0006] In step S2, the material of the welding lug is Q235B, and the welding rod used is J422 welding rod.

[0007] In step S3, the residence time of epoxy resin in the filling device is less than 40 minutes to prevent the epoxy resin from solidifying in the filling device. The filling temperature should be above 20°C to enhance the fluidity of the epoxy resin.

[0008] During the 24-hour settling time in step S6, the fixed cone liner must not be subjected to impact or other external forces, and the settling temperature should be maintained between 25-40℃. If the ambient temperature is low, low-temperature uniform heating can be used.

[0009] A filling device for a single fixed cone liner of a gyratory crusher includes a tank, a filling funnel at the top of the tank, a handle on one side of the tank, an air duct on the upper side of the other side of the tank, the air duct being connected to a compressed air source, and a filling pipe at the bottom of the tank, the filling pipe being in the shape of a barb.

[0010] The bottom of the tank is provided with a connecting pipe, and a first valve is provided on the connecting pipe. The filling pipe is connected to the connecting pipe through a first quick connector.

[0011] The air duct is equipped with a second valve, and the air duct is connected to the tank body via a second quick connector.

[0012] A third valve is installed at the outlet of the filling funnel.

[0013] The tank is equipped with a glass window, and the glass window is marked with graduations.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. Short maintenance time: When repairing a traditional single-piece fixed cone liner plate that has fallen off, the entire fixed cone liner plate needs to be removed, reinstalled, and epoxy resin filled, which takes a long time and affects system production. 2. By combining wedge-welding-filling methods, the fallen cone liner is fixed to reduce the possibility of the liner falling off again; 3. The filling device is not only easy to use, but also solves the problem of poor flowability of epoxy resin backing by using compressed air, and speeds up the filling speed of epoxy resin backing. 4. The method of removing a single gyratory crusher cone liner can reduce the workload and personnel required for repairing the fallen cone liner. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the filling device in this invention; In the picture: 1. Tank body; 2. Filling funnel; 3. Handle; 4. Air duct; 5. Filling pipe; 6. Connecting pipe; 7. First valve; 8. First quick connector; 9. Second valve; 10. Second quick connector; 11. Third valve; 12. Glass window; 13. Scale; 14. Epoxy resin. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0017] A filling device for a single fixed cone liner of a gyratory crusher includes a tank body 1, a filling funnel 2 at the top of the tank body 1, a handle 3 on one side of the tank body 1, an air duct 4 on the upper side of the other side of the tank body 1, the air duct 4 being connected to a compressed air source, and a filling pipe 5 at the bottom of the tank body 1, the filling pipe 5 being in the shape of a barb.

[0018] The bottom of the tank 1 is provided with a connecting pipe 6, and a first valve 7 is provided on the connecting pipe 6. The filling pipe 5 is connected to the connecting pipe 6 through a first quick connector 8.

[0019] The air duct 4 is equipped with a second valve 9, and the air duct 4 is connected to the tank body 1 through a second quick connector 10.

[0020] A third valve 11 is installed at the outlet of the filling funnel 2.

[0021] The tank body 1 is equipped with a glass window 12, and the glass window 12 is provided with a scale 13.

[0022] It also includes a method for filling a single fixed cone liner of a gyratory crusher, comprising the following steps: S1, after cleaning the loosened cone liner, the ore between the cone liner and the cone is removed. After removing or relocating the loose or fallen cone liner, use a flat shovel and angle grinder to remove the fallen cone liner, the minerals attached to the cone, and the residual epoxy resin backing. Close the third valve 11, open the first valve 7 and the second valve 9, turn on the compressed air source connected to the air pipe 4, and blow the fallen cone liner and the surface of the cone through the hook-shaped filling pipe 5 to remove fine minerals and dust. S2, third valve 11, close first valve 7 and second valve 9, then weld lifting lugs to the front of the fallen cone liner, hoist the fallen cone liner back to its original position, cut wedges, the thickness and width of the wedges corresponding to the gap thickness and width of the gyratory crusher cone liner, the material of the wedges is Q235B, wedge the wedges into the gap between the cone liners, and fix the wedges to the adjacent cone liners by welding, after the weld has cooled, seal the remaining gaps with sealant, and use tin foil strips to stick the gaps together. S3, epoxy resin is filled into tank 1 through filling funnel 2. The amount of epoxy resin inside tank 1 is observed in real time through scale 13 of glass window 12 on tank 1. When tank 1 is full of epoxy resin, filling pipe 5 is inserted into filling hole on drop cone liner, first valve 7 and second valve 9 are opened, and the epoxy resin in tank 1 is compressed by the pressure provided by compressed air source, so that epoxy resin in tank 1 is discharged through filling pipe 5 at an accelerated speed and filled onto drop cone liner. S4. Observe the epoxy resin filling situation in the gap above the fixed cone liner. Ensure that the epoxy resin is evenly filled in the fixed cone liner and the gap between the fixed cone. When the epoxy resin is seen to spread to the top gap of the fixed cone liner, close the first valve 7 and the second valve 9. After the epoxy resin in the filling tube 5 has flowed out, pull out the discharge tube to complete the filling. S5. After filling is completed, a wedge strip is inserted into the gap above the filling cone liner. The thickness and width of the wedge strip correspond to the gap of the cone liner. The material of the wedge strip is Q235B. After the wedge strip is inserted, tin foil is pasted at the gap to prevent dust and debris from entering. S6. After the above process is completed, let it stand for 24 hours to allow the epoxy resin to solidify. S7. After the epoxy resin has completely solidified, conduct an inspection and test run. Tap the repaired cone liner with a hollow hammer, and then conduct a test run with ore to observe whether the repaired cone liner has loosened or shifted during the ore crushing process.

[0023] In step S2, the material of the welding lug is Q235B, and the welding rod used is J422 welding rod.

[0024] In step S1, the pressure of the compressed air source is greater than 0.6 MPa.

[0025] In step S3, during filling, the epoxy resin should be kept in the container 1 for less than 40 minutes to prevent it from solidifying. The filling temperature should be above 20°C to enhance the flowability of the epoxy resin.

[0026] In step S5, the dropped liner after filling should be aligned with other fixed cone liners, with an upper and lower error not exceeding 1mm.

[0027] During the 24-hour settling time in step S6, the fixed cone liner must not be subjected to impact or other external forces, and the settling temperature should be maintained between 25-40℃. If the ambient temperature is low, low-temperature uniform heating can be used.

[0028] In step S7, the hollow rate of the fixed cone liner is less than 2%.

[0029] Implementation examples S1. Clean the ore and other debris from the feed inlet of the gyratory crusher, set up a working platform inside the crushing chamber to create a good working space, and prepare tools such as welding machines, wedges, tin foil, crowbars, and angle grinders.

[0030] S2, after cleaning the loosened liner, the ore enters between the fixed cone liner and the fixed cone. After removing and relocating the loose or fallen fixed cone liner, use a flat chisel and angle grinder to remove the minerals and residual epoxy resin backing attached to the fallen fixed cone liner and the fixed cone. Then use compressed air to blow away the surface of the fallen liner and the fixed cone to remove fine minerals and dust, and prevent debris from affecting the liner filling quality.

[0031] S3. Weld lifting lugs to the dropped cone liner. The lifting lugs are made of Q235B and are 50mm×50mm in size. The curvature is consistent with that of the dropped liner. A 20mm diameter hole is made in the middle to facilitate the threading of the lifting wire rope. The dropped liner is then lifted back to its original position, ensuring that its position is consistent with the other non-dropped cone liners in all directions, with an error of no more than 1mm. After the left, right, and bottom sides are fixed with wedges, they are then fixed again by welding. After the weld has cooled, it is sealed with tin foil strips to prevent leakage from the surrounding gaps during subsequent filling.

[0032] S4. After the single-piece fixed cone liner filling device is installed in place, the required epoxy resin backing is mixed evenly in advance. After the mixing is completed, the filling operation is carried out. The filling temperature should be between 25-40℃ to ensure that the epoxy resin filling material has good fluidity.

[0033] S5. After filling, the upper part is sealed by wedging in iron wedges, welding reinforcement, and sealing with tin foil strips to prevent fine mineral particles and dust from entering between the fixed cone and the liner.

[0034] S6. After the above steps are completed, allow the epoxy resin to stand for 24 hours to solidify completely. Then, heat the fallen cone liner plate appropriately and evenly to accelerate its solidification. The heating temperature is 40-60℃.

[0035] After the S7 epoxy resin backing has completely solidified, it is tested to confirm that the void rate is <2% and the position has not shifted. Then, a trial run with ore is carried out. After the trial run is completed normally, the liner is inspected daily to see if it has become loose or shifted. No loosening, falling off or shifting of the liner has occurred in 1.5 years of normal production, indicating that the repair quality is reliable and good.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for filling a single fixed cone liner plate of a gyratory crusher, characterized in that: Includes the following steps: S1, after cleaning the loosened cone liner, the ore between the cone liner and the cone is removed. After removing or relocating the loose or fallen cone liner, use a flat shovel and angle grinder to remove the fallen cone liner, the minerals attached to the cone, and the residual epoxy resin backing. Blow the fallen cone liner and the surface of the cone through the air outlet of the filling device to remove fine minerals and dust. S2, weld lifting lugs to the front of the fallen cone liner, hoist the fallen cone liner back to its original position and put it back in, cut wedges, the thickness and width of the wedges correspond to the gap thickness and width of the gyratory crusher cone liner, the material of the wedges is Q235B, wedges are inserted into the gap between the cone liners, and the wedges are fixed to the adjacent cone liners by welding, after the weld has cooled, seal the remaining gaps with sealant, and use tin foil strips to stick the gaps together; S3, fill the epoxy resin in the filling device onto the falling fixed cone liner; S4. Observe the epoxy resin filling in the gap above the fixed cone liner. Ensure that the epoxy resin is evenly filled in the fixed cone liner and the gap between the fixed cone. When you see the epoxy resin spread to the top gap of the fixed cone liner, the filling is complete. S5. After filling is completed, a wedge strip is inserted into the gap above the filling cone liner. The thickness and width of the wedge strip correspond to the gap of the cone liner. The material of the wedge strip is Q235B. After the wedge strip is inserted, tin foil is pasted at the gap to prevent dust and debris from entering. S6. After the above process is completed, let it stand for 24 hours to allow the epoxy resin to solidify. S7. After the epoxy resin has completely solidified, conduct an inspection and test run. Tap the repaired cone liner with a hollow hammer, and then conduct a test run with ore to observe whether the repaired cone liner has loosened or shifted during the ore crushing process.

2. The method for filling a single fixed cone liner of a gyratory crusher according to claim 1, characterized in that: In step S1, the air pressure at the outlet is greater than 0.6 MPa.

3. The method for filling a single fixed cone liner of a gyratory crusher according to claim 1, characterized in that: In step S2, the material of the welding lug is Q235B, and the welding rod used is J422 welding rod.

4. The method for filling a single fixed cone liner of a gyratory crusher according to claim 1, characterized in that: In step S3, the residence time of epoxy resin in the filling device is less than 40 minutes to prevent the epoxy resin from solidifying in the filling device. The filling temperature should be above 20°C to enhance the fluidity of the epoxy resin.

5. The method for filling a single fixed cone liner of a gyratory crusher according to claim 1, characterized in that: During the 24-hour settling time in step S6, the fixed cone liner must not be subjected to impact or other external forces, and the settling temperature should be maintained between 25-40℃. If the ambient temperature is low, low-temperature uniform heating can be used.

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