Filling method and filling device for single fixed cone lining plate of gyratory crusher

Abstract

The invention discloses a filling method and a filling device for a single fixed cone lining plate of a gyratory crusher, and relates to the technical field of gyratory crusher repair. According to the filling device, the falling fixed cone lining plate is fixed in a wedge-welding-filling mode, the possibility that the lining plate falls again is reduced, the maintenance time is short, the problem of poor fluidity of the epoxy resin backing can be solved by compressing air into the tank body through the filling device, the filling speed of the epoxy resin backing is increased, and the filling efficiency of the epoxy resin backing is improved. And the workload and personnel allocation for repairing the fallen fixed cone lining plate are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of gyratory crusher repair, and in particular to a filling method and a filling device for a single fixed cone liner of a gyratory crusher. Background Art

[0002] Gyratory crushers generally achieve the purpose of crushing ore by swinging and rotating the movable cone, causing the ore in the crushing chamber to collide with the movable and fixed cones. When the gyratory crusher works at full load for a long time, the ore in the crushing chamber will have a radial impact on the fixed cone lining of the gyratory crusher, causing part of the fixed cone lining backing to peel off. When a single piece of the fixed cone lining on this layer is loose, it is necessary to remove all the linings on this layer and refill them with epoxy resin backing, which not only takes a long time and has high maintenance costs, but also affects the stable production of the system. Summary of the invention

[0003] In view of the above technical problems, the present invention provides a method and a device for filling a single fixed cone liner of a gyratory crusher, which are used to solve the problem that the liner of the existing gyratory crusher cannot be repaired if it is loosened individually.

[0004] In order to achieve the above object, the technical solution of the present invention is as follows: A method for filling a single fixed cone liner of a gyratory crusher comprises the following steps: S1, clean the ore that enters between the concave liner and the concave after the concave liner is loosened, remove the loose or fallen concave liner, use a flat shovel and an angle grinder to remove the fallen concave liner, the minerals attached to the concave and the residual epoxy resin backing, and blow the fallen concave liner and the concave surface through the air outlet of the filling device to remove fine minerals and dust; S2, weld a lifting lug on the front of the fallen concave liner, lift the fallen concave liner to its original position and put it in, cut a wedge iron bar, the thickness and width of the wedge iron bar correspond to the gap thickness and width of the concave liner of the gyratory crusher, the material of the wedge iron bar is Q235B, wedge the wedge iron bar into the gap between the concave liner plates, fix the wedge iron bar to the adjacent concave liner plates by welding, and after the weld cools down, use sealant to seal the remaining gap, and use tin foil strips to seal the gap, S3, filling the epoxy resin in the filling device onto the falling fixed cone lining; S4, observe the filling of the epoxy resin in the gap above the concave liner, ensure that the epoxy resin is evenly filled in the gap between the concave liner and the concave, and complete the filling when the epoxy resin spreads to the gap at the top of the concave liner; S5, after the filling is completed, a wedge iron bar is wedged into the gap above the filling fixed cone liner. The thickness and width of the wedge iron bar correspond to the gap of the fixed cone liner. The material of the wedge iron bar is Q235B. After the wedge iron bar is wedged in, tin foil is pasted on the gap to prevent dust and debris from entering; S6, after the above steps are completed, let it stand for 24 hours to wait for the epoxy resin to solidify; S7, after the epoxy resin is completely solidified, an inspection test is carried out, and the repaired fixed cone lining is hit with a hollow hammer, followed by a test run with ore to observe whether the repaired fixed cone lining is loose or offset during the ore crushing process.

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

[0006] In the 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 the epoxy resin in the filling device is less than 40 minutes to prevent the epoxy resin from solidifying in the filling device. The temperature during filling should be above 20° C. to enhance the fluidity of the epoxy resin.

[0008] During the 24-hour static solidification time in step S6, the fixed cone lining plate shall not be subjected to impact or other external forces, and the solidification temperature shall be maintained between 25-40° C. If the ambient temperature is low, low-temperature uniform heating may be used.

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

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

[0011] The air duct is provided 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 on the outlet of the filling funnel.

[0013] A glass window is installed on the tank body, and a scale is arranged on the glass window.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Short maintenance time. When a single concave liner falls off and is repaired in the traditional way, the concave liner needs to be completely removed, reinstalled, and filled with epoxy resin, which takes a long time to repair and affects system production. 2. Fix the fallen fixed cone liner by combining wedge-welding-filling to reduce the possibility of the liner falling again; 3. The filling device is not only easy to use, but also can solve the problem of poor fluidity of epoxy resin backing through compressed air, and speed up the filling speed of epoxy resin backing; 4. The method of dropping a single gyratory crusher's fixed cone liner can reduce the workload and personnel allocation for repairing the dropped fixed cone liner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the filling device in the present invention; In the figure: 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 DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

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

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

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

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

[0021] A glass window 12 is installed on the tank body 1 , and a scale 13 is provided on the glass window 12 .

[0022] The invention also includes a method for filling a single fixed cone liner of a gyratory crusher, comprising the following steps: S1, cleaning the ore that enters between the conical liner and the conical cone after the conical liner is loosened, removing and shifting the loose or fallen conical liner, using a flat shovel and an angle grinder to remove the fallen conical liner, the minerals attached to the conical cone, and the residual epoxy resin backing, closing the third valve 11, opening the first valve 7 and the second valve 9, opening the compressed air source connected to the air duct 4, and blowing the fallen conical liner and the conical cone surface through the hook-shaped filling pipe 5 to remove fine minerals and dust; S2, the third valve 11, close the first valve 7 and the second valve 9, then weld the lifting lug on the front of the dropped fixed cone liner, lift the dropped fixed cone liner to the original position and put it in, cut the wedge iron bar, the thickness and width of the wedge iron bar correspond to the gap thickness and width of the fixed cone liner of the gyratory crusher, the material of the wedge iron bar is Q235B, wedge the wedge iron bar into the gap between the fixed cone liner, fix the wedge iron bar to the adjacent fixed cone liner by welding, and after the weld cools down, use sealant to seal the remaining gap, and use tin foil to paste the gap, S3, filling epoxy resin into the tank body 1 through the filling funnel 2, and observing the amount of epoxy resin in the tank body 1 in real time through the scale 13 of the glass window 12 on the tank body 1. When the tank body 1 is filled with epoxy resin, insert the filling tube 5 into the filling hole on the falling cone liner, open the first valve 7 and the second valve 9, and use the pressure provided by the compressed air source to compress the epoxy resin in the tank body 1, so that the epoxy resin in the tank body 1 is accelerated to be discharged through the filling tube 5 and filled onto the falling cone liner; S4, observe the filling of the epoxy resin in the gap above the fixed cone liner, ensure that the epoxy resin is evenly filled in the gap between the fixed cone liner and the fixed cone, and when the epoxy resin spreads to the gap at the top of the fixed cone liner, close the first valve 7 and the second valve 9, and after the epoxy resin in the filling pipe 5 flows out, pull out the discharge pipe to complete the filling; S5, after the filling is completed, a wedge iron bar is wedged into the gap above the filling fixed cone liner. The thickness and width of the wedge iron bar correspond to the gap of the fixed cone liner. The material of the wedge iron bar is Q235B. After the wedge iron bar is wedged in, tin foil is pasted on the gap to prevent dust and debris from entering; S6, after the above steps are completed, let it stand for 24 hours to wait for the epoxy resin to solidify; S7, after the epoxy resin is completely solidified, an inspection test is carried out, and the repaired fixed cone lining is hit with a hollow hammer, followed by a test run with ore to observe whether the repaired fixed cone lining is loose or offset during the ore crushing process.

[0023] In the 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] During the filling in step S3, it should be ensured that the residence time of the epoxy resin in the tank body 1 is less than 40 minutes to prevent the epoxy resin from solidifying in the tank body 1. The temperature during filling should be above 20° C. to enhance the fluidity of the epoxy resin.

[0026] The dropped liner plate filled in the step S5 should be aligned with other fixed cone liners, with the upper and lower errors not exceeding 1 mm.

[0027] During the 24-hour static solidification time in step S6, the fixed cone lining plate shall not be subjected to impact or other external forces, and the solidification temperature shall be maintained between 25-40° C. If the ambient temperature is low, low-temperature uniform heating may be used.

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

[0029] Example S1. Clean the ore and other debris at the feed port of the gyratory crusher, set up a working platform in the crushing chamber, create a good working space, and prepare tools such as welding machine, wedge iron, tin foil, crowbar, angle grinder, etc.

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

[0031] S3, weld a lifting lug on the dropped conical liner. The lifting lug is made of Q235B and has a size of 50mm×50mm. Its curvature is consistent with that of the dropped liner. A 20mm diameter round hole is opened in the middle to facilitate stringing of the lifting wire rope. The dropped liner is lifted to its original position to ensure that it is consistent with the up and down, left and right positions of other undropped conical liners, with an error of no more than 1mm. The left, right and bottom sides are fixed with wedge iron bars and then fixed again by welding. After the weld is cooled, it is sealed with tin foil strips to prevent leakage from the gaps around during the subsequent filling process.

[0032] S4, after installing the single fixed cone liner filling device in place, evenly mix the required epoxy resin backing in advance, and carry out filling after mixing. The filling temperature needs to be 25-40℃ to ensure that the epoxy resin filling material has good fluidity.

[0033] S5, after filling is completed, the upper part is sealed, still using wedge iron bars to wedge, welding reinforcement, and tin foil strip sealing to prevent fine mineral particles and dust from entering between the fixed cone and the liner.

[0034] S6, after the above steps are completed, the epoxy resin is allowed to stand for 24 hours to completely solidify, and the dropped fixed cone liner is properly and evenly heated to accelerate its solidification speed, and the heating temperature is 40-60°C.

[0035] S7, after the epoxy resin backing is completely solidified, it is tested to confirm that the hollow rate is less than 2% and the position has not shifted, then a trial run with ore is carried out. After the trial run is completed normally, daily inspections are carried out to observe whether the lining is loose or shifted. There has been no loosening, falling or shifting of the lining in 1.5 years of normal production, indicating that the repair quality is reliable and intact.

[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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for filling a single fixed cone liner of a gyratory crusher, characterized in that: The following steps are involved: S1, clean the ore that enters between the concave liner and the concave after the concave liner is loosened, remove the loose or fallen concave liner, use a flat shovel and an angle grinder to remove the fallen concave liner, the minerals attached to the concave and the residual epoxy resin backing, and blow the fallen concave liner and the concave surface through the air outlet of the filling device to remove fine minerals and dust; S2, welding a lifting lug on the front of the fallen concave liner, lifting the fallen concave liner to its original position and placing it there, cutting a wedge iron bar, the thickness and width of which correspond to the gap thickness and width of the concave liner of the gyratory crusher, the material of which is Q235B, wedging the wedge iron bar into the gap between the concave liner plates, fixing the wedge iron bar to the adjacent concave liner plates by welding, and sealing the remaining gap with a sealant after the weld has cooled, and sealing the gap with a tin foil strip; S3, filling the epoxy resin in the filling device onto the falling fixed cone lining; S4, observe the filling of the epoxy resin in the gap above the concave liner, ensure that the epoxy resin is evenly filled in the gap between the concave liner and the concave, and complete the filling when the epoxy resin spreads to the gap at the top of the concave liner; S5, after the filling is completed, a wedge iron bar is wedged into the gap above the filling fixed cone liner. The thickness and width of the wedge iron bar correspond to the gap of the fixed cone liner. The material of the wedge iron bar is Q235B. After the wedge iron bar is wedged in, tin foil is pasted on the gap to prevent dust and debris from entering; S6, after the above steps are completed, let it stand for 24 hours to wait for the epoxy resin to solidify; S7, after the epoxy resin is completely solidified, an inspection test is carried out, and the repaired fixed cone lining is hit with a hollow hammer, followed by a test run with ore to observe whether the repaired fixed cone lining is loose or offset during the ore crushing process.

2. A 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 air outlet is greater than 0.6 MPa.

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

4. A 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 the epoxy resin in the filling device is less than 40 minutes to prevent the epoxy resin from solidifying in the filling device. The temperature during filling should be above 20° C. to enhance the fluidity of the epoxy resin.

5. A method for filling a single fixed cone liner of a gyratory crusher according to claim 1, characterized in that: During the 24-hour static solidification time in step S6, the fixed cone lining plate shall not be subjected to impact or other external forces, and the solidification temperature shall be maintained between 25-40° C. If the ambient temperature is low, low-temperature uniform heating may be used.

6. A filling device for a single fixed cone liner of a gyratory crusher, characterized in that: The invention comprises a tank body (1), a filling funnel (2) is provided on the top of the tank body (1), a handle (3) is provided on one side of the tank body (1), an air duct (4) is provided on the upper side of the other side of the tank body (1), the air duct (4) is connected to a compressed air source, and a filling pipe (5) is provided on the bottom of the tank body (1), the filling pipe (5) being in the shape of a barb.

7. A gyratory crusher single-cone liner filling device according to claim 6, characterized in that: A connecting pipe (6) is provided at the bottom of the tank body (1), a first valve (7) is provided on the connecting pipe (6), and the filling pipe (5) is connected to the connecting pipe (6) via a first quick connector (8).

8. A gyratory crusher single cone liner filling device according to claim 7, characterized in that: The air duct (4) is provided with a second valve (9), and the air duct (4) is connected to the tank body (1) via a second quick connector (10).

9. A gyratory crusher single cone liner filling device according to claim 8, characterized in that: A third valve (11) is installed on the outlet of the filling funnel (2).

10. A gyratory crusher single-cone liner filling device according to claim 9, characterized in that: A glass window (12) is installed on the tank body (1), and a scale (13) is provided on the glass window (12).

Images