Reinforcing manufacturing method of fire coal sample preparation crusher

Abstract

The invention relates to a reinforcing manufacturing method of a fire coal sample preparation crusher. A transmission part of the crusher is jammed, part of structural parts slightly deform, coal and powder leak occurs in equipment, and the sample size and environmental protection are seriously affected. The method comprises the following steps: carrying out plastic spraying and processing on a crushing cavity; a phi 420 manganese steel pipe is used as a wear-resistant arc lining plate; the inspection hole cover is fixed by a movable pressing plate bolt instead of being installed by a hinge through pin in the prior art, so that the combination surface is increased, and the sealing surface is also increased; parts of the crushing roller main shaft assembly are assembled; and the hammer head is installed and assembled. The reinforcing device is used for reinforcing and manufacturing the fire coal sample preparation crusher.

Description

Technical Field

[0001] The invention relates to a reinforcement manufacturing method of a coal-fired sample crusher. Background Art

[0002] The existing C-QQFQ-6.0M-4.6 automobile bridge sampler and U4 full-pass sample preparation system sample preparation machine are produced by Hunan Sande Technology Co., Ltd. and have been in use since September 2015. Due to the long service life of the equipment, the electrical components have aged and the induction is not sensitive. The crusher transmission parts are stuck, some structural parts are slightly deformed, and the equipment leaks coal and powder, which seriously affects the sample quantity and environmental protection. Since the particle size of the automobile sampler exceeds 6mm after the first-level crushing port, the particle size after full water reduction cannot meet the laboratory's full water particle size measurement requirements, and must be manually crushed before use. Too much human intervention in the sample preparation process increases the risk factors. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problems and provide a method for reinforcing a coal sample crusher.

[0004] The above purpose is achieved through the following technical solutions: A method for reinforcing a coal sample crusher, the method comprising the following steps: Step 1: Spray and process the crushing cavity; Step 2: Use Φ420 manganese steel pipe as wear-resistant arc lining; Step 3: Change the inspection hole cover from the original hinge pin installation to the movable pressure plate bolt fixation, which increases the bonding surface and also increases the sealing surface; Step 4: Assemble the crushing roller main shaft assembly parts; Step 5: Install and assemble the hammer head.

[0005] The reinforcement manufacturing method of the coal-fired sampling crusher is described, and the specific process of step one is: the key dimensions of the crushing chamber are processed after overall welding, the welds not specified are continuous welds, the weld height is 8-10mm, the inner circular surface R250 of the crushing chamber is processed simultaneously with the inspection door, and before spraying the crushing chamber, all debris, milling skin, grease, welding slag, etc. on the inner and outer surfaces should be removed, and the surface needs to be polished smooth before spraying, and the dimensions of the upper, middle and lower positions of the inner wall of the crushing chamber need to be detected.

[0006] The reinforced manufacturing method of the coal-fired sample crusher, the specific process of step four is: the parts of the crushing roller main shaft assembly must be cleaned and washed before assembly, the bearings of the crushing roller main shaft assembly should be coated with silicone-based grease, the crushing roller main shaft assembly should be able to be moved by hand after installation, and rotate freely without jamming, the bearing seat installation contact surface should be coated with sealant, the relative position of the large pulley and the adjacent fixed plate and limit plate should ensure that the hammer head shaft is coaxial with the through hole on the large pulley.

[0007] The reinforcement manufacturing method of the coal-fired sample crusher, the specific process of step 5 is: (1) Partial quenching is performed on the steel sheet, with a depth of 3-5 mm, HRC45-50, and the weight of the hammer head is controlled within the range of 11.85 ± 0.01 kg; (2) The hammer head is integrally cast and made of 40CrMoTi. The casting is not allowed to have cold shut, cracks, shrinkage holes, penetration defects and serious incomplete defects; (3) There are 2 groups of hammers, with a total of 6 hammers, which are divided into two types: hammer A and hammer B. Hammer A is a hammer with teeth, which can not only crush the coal sample but also clean the inner wall of the crushing chamber. Hammer B is a hammer without teeth, which can impact and crush the coal sample; (4) In order to ensure the dynamic balance of all hammer heads during rotation, the weight deviation between all hammer heads must be within ±100g. Beneficial Effects

[0008] 1. The invention reduces the direct impact sound of metal during the operation of the modified crusher, thereby effectively reducing the noise generated during operation and providing a comfortable working environment. The modified locking device is safe and reliable. It has a compact structure, light weight and beautiful appearance. It reduces dust and noise pollution and meets environmental protection requirements.

[0009] 2. The inspection hole cover of the present invention is changed from the original hinge pin installation to a movable pressure plate bolt fixation, which increases the bonding surface and also increases the sealing surface, ensuring the leakage of coal powder and dust during work, eliminating dust pollution in the working environment, and ensuring the physical and mental health of the operators. DETAILED DESCRIPTION

[0010] A method for reinforcing a coal sample crusher, the method comprising the following steps: Step 1: Spray and process the crushing cavity; Step 2: Use Φ420 manganese steel pipe as wear-resistant arc lining; Step 3: Change the inspection hole cover from the original hinge pin installation to the movable pressure plate bolt fixation, which increases the bonding surface and also increases the sealing surface; Step 4: Assemble the crushing roller main shaft assembly parts; Step 5: Install and assemble the hammer head.

[0011] The reinforcement manufacturing method of the coal-fired sampling crusher is described, and the specific process of step one is: the key dimensions of the crushing chamber are processed after overall welding, the welds not specified are continuous welds, the weld height is 8-10mm, the inner circular surface R250 of the crushing chamber is processed simultaneously with the inspection door, and before spraying the crushing chamber, all debris, milling skin, grease, welding slag, etc. on the inner and outer surfaces should be removed, and the surface needs to be polished smooth before spraying, and the dimensions of the upper, middle and lower positions of the inner wall of the crushing chamber need to be detected.

[0012] The reinforced manufacturing method of the coal-fired sample crusher, the specific process of step four is: the parts of the crushing roller main shaft assembly must be cleaned and washed before assembly, the bearings of the crushing roller main shaft assembly should be coated with silicone-based grease, the crushing roller main shaft assembly should be able to be moved by hand after installation, and rotate freely without jamming, the bearing seat installation contact surface should be coated with sealant, the relative position of the large pulley and the adjacent fixed plate and limit plate should ensure that the hammer head shaft is coaxial with the through hole on the large pulley.

[0013] The reinforcement manufacturing method of the coal-fired sample crusher, the specific process of step 5 is: (1) Partial quenching is performed on the steel sheet, with a depth of 3-5 mm, HRC45-50, and the weight of the hammer head is controlled within the range of 11.85 ± 0.01 kg; (2) The hammer head is integrally cast and made of 40CrMoTi. The casting is not allowed to have cold shut, cracks, shrinkage holes, penetration defects and serious incomplete defects; (3) There are 2 groups of hammers, with a total of 6 hammers, which are divided into two types: hammer A and hammer B. Hammer A is a hammer with teeth, which can not only crush the coal sample but also clean the inner wall of the crushing chamber. Hammer B is a hammer without teeth, which can impact and crush the coal sample; (4) In order to ensure the dynamic balance of all hammer heads during rotation, the weight deviation between all hammer heads must be within ±100g.

Claims

1. A method for reinforcing a coal-fired sample crusher, characterized in that: The method comprises the following steps: Step 1: Spray and process the crushing cavity; Step 2: Use Φ420 manganese steel pipe as wear-resistant arc lining; Step 3: Change the inspection hole cover from the original hinge pin installation to the movable pressure plate bolt fixation, which increases the bonding surface and also increases the sealing surface; Step 4: Assemble the crushing roller main shaft assembly parts; Step 5: Install and assemble the hammer head.

2. The method for reinforcing a coal sample crusher according to claim 1, characterized in that: The specific process of step one is as follows: the key dimensions of the crushing chamber are processed after overall welding, the welds not specified are continuous welds, the weld height is 8-10mm, the inner circular surface R250 of the crushing chamber is processed at the same time as the inspection door, and all debris, milling skin, grease, welding slag, etc. on the inner and outer surfaces should be removed before spraying the crushing chamber. At the same time, the surface needs to be polished smooth before spraying, and the dimensions of the upper, middle and lower positions of the inner wall of the crushing chamber need to be detected.

3. The method for reinforcing a coal sample crusher according to claim 1, characterized in that: The specific process of step 4 is as follows: the parts of the crushing roller main shaft assembly must be cleaned and washed before assembly, the bearings of the crushing roller main shaft assembly should be coated with silicone-based grease, the crushing roller main shaft assembly should be able to be moved by hand after installation, and rotate freely without jamming, the contact surface of the bearing seat installation should be coated with sealant, and the relative position of the large pulley and the adjacent fixed plate and limit plate should ensure that the hammer head shaft is coaxial with the through hole on the large pulley.

4. The method for reinforcing a coal sample crusher according to claim 1, characterized in that: The specific process of step five is as follows: (1) Partial quenching is performed on the steel sheet, with a depth of 3-5 mm, HRC45-50, and the weight of the hammer head is controlled within the range of 11.85 ± 0.01 kg; (2) The hammer head is integrally cast and made of 40CrMoTi. The casting is not allowed to have cold shut, cracks, shrinkage holes, penetration defects and serious incomplete defects; (3) There are 2 groups of hammers, with a total of 6 hammers, which are divided into two types: hammer A and hammer B. Hammer A is a hammer with teeth, which can not only crush the coal sample but also clean the inner wall of the crushing chamber. Hammer B is a hammer without teeth, which can impact and crush the coal sample; (4) In order to ensure the dynamic balance of all hammer heads during rotation, the weight deviation between all hammer heads must be within ±100g.