Grinding roller limiting device of vertical mill

Abstract

The utility model relates to the field of vertical mills, and discloses a vertical mill grinding roller limiting device which comprises a grinding roller, a fixing ring is arranged on the outer wall of the grinding roller, an installation ring is sleeved on the outer wall of the grinding roller, a stretching rod is installed on the outer wall of the fixing ring in a sliding mode, a reset spring is sleeved on the outer wall of the stretching rod, and the vertical mill grinding roller limiting device further comprises a detachable assembly. The grinding roller and the fixing ring are convenient to disassemble, when the grinding roller needs to be maintained or replaced regularly, an operator can disassemble the grinding roller from the fixing ring only through simple operation, complex disassembling work is not needed, and the maintenance efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vertical mill, concretely is a vertical mill grinding roller limiting device. BACKGROUND

[0002] In the technical field of vertical mill roller machine, the stability and durability of the grinding roller as a key working component are directly related to the operation efficiency and production quality of the whole equipment. In order to ensure that the grinding roller can keep stable rotation during work, and at the same time avoid rigid collision with the grinding disc or other components, it is usually necessary to equip it with a limiting device.

[0003] Chinese patent document publication CN220143553U discloses a vertical mill grinding roller limiting device, which comprises a fixed ring, a spring buffer device is arranged in the inner ring of the fixed ring, the spring buffer device comprises a mounting ring and a buffer spring, a fixed block is arranged between one end of the buffer spring and the inner ring of the fixed ring, a connecting block is arranged between the other end of the buffer spring and the outer ring of the mounting ring, and a limiting device is arranged in the inner ring of the mounting ring. The vertical mill grinding roller limiting device disclosed by the utility model is provided with a spring buffer device, which can transmit force to the mounting ring when the grinding roller contacts the limiting device during rotation, and the buffer spring arranged between the fixed ring and the mounting ring can buffer the force, thereby protecting the device from damage. The four sets of buffer springs can effectively buffer the impact force, the structure is simple, the protection of the device can be improved, the device can be prevented from being damaged due to excessive stress, and the service life of the device is improved.

[0004] The above-mentioned device is provided with a spring buffer device, which can transmit force to the mounting ring when the grinding roller contacts the limiting device during rotation, and the buffer spring arranged between the fixed ring and the mounting ring can buffer the force, thereby protecting the device from damage. The four sets of buffer springs can effectively buffer the impact force, the structure is simple, the protection of the device can be improved, the device can be prevented from being damaged due to excessive stress, and the service life of the device is improved. However, in actual use, the following defects exist: the grinding roller needs to be regularly disassembled and maintained under long-term and high-intensity working conditions, but the above-mentioned device does not have this function, and therefore a vertical mill grinding roller limiting device is proposed. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a vertical mill grinding roller limiting device to solve the above-mentioned problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a vertical mill grinding roller limiting device, comprising a grinding roller, a fixed ring is arranged on the outer wall of the grinding roller, a mounting ring is sleeved on the outer wall of the grinding roller, a stretch rod is slidingly installed on the outer wall of the fixed ring, a reset spring is sleeved on the outer wall of the stretch rod, and the vertical mill grinding roller limiting device further comprises:

[0007] The detachable assembly is arranged on the stretching rods and used for detaching the grinding roller from the fixing ring.

[0008] Preferably, the stretching rods are arranged in four groups, and the four groups of stretching rods are arranged in a ring shape and equidistantly distributed.

[0009] Preferably, the detachable assembly comprises limiting rods, and the end portions of the four groups of stretching rods slidingly extending into the fixing ring are all sleeved with the limiting rods which are larger in diameter than the end portions of the stretching rods.

[0010] Preferably, the detachable assembly further comprises extension rods, pins and rollers, the side edges of the four groups of limiting rods are all fixedly connected with the extension rods, the two sides of the extension rods close to the end portions are all fixedly connected with the pins, and the outer walls of the two groups of pins are all rotatably sleeved with the rollers.

[0011] Preferably, the outer wall of the fixing ring is provided with a ring groove, and the outer wall of the roller is tightly combined with the inner wall of the ring groove.

[0012] Preferably, the end portions of the two groups of pins which are away from each other on the extension rod are respectively combined with the two side inner walls of the ring groove.

[0013] Compared with the prior art, the vertical mill grinding roller limiting device has the following beneficial effects:

[0014] 1. The vertical mill grinding roller limiting device realizes convenient detachment between the grinding roller and the fixing ring through the detachable assembly, so that when the grinding roller needs to be regularly maintained or replaced, the operator can only detach the grinding roller from the fixing ring through simple operation, without complicated disassembling work, and the maintenance efficiency is greatly improved.

[0015] 2. The vertical mill grinding roller limiting device, the stretching rods, the limiting rods and the return springs in the device together constitute a stable buffer system, so that when the grinding roller generates impact force in the working process, the buffer system can effectively absorb and disperse the impact force, so as to protect the grinding roller and the fixing ring from being damaged and prolong the service life of the equipment.

[0016] 3. The vertical mill grinding roller limiting device, the setting of the rollers reduces the friction between the grinding roller and the mounting ring in the rotating process, reduces the energy consumption and wear, improves the operation efficiency of the equipment, and the tight combination of the rollers and the ring groove also ensures the stability of the grinding roller in the rotating process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a whole structure schematic view of the utility model;

[0018] Fig. 2 It is a pin and roller schematic view of the utility model;

[0019] Fig. 3 It is a ring groove schematic view of the utility model.

[0020] In the diagram: 1. Grinding roller; 2. Fixing ring; 3. Mounting ring; 4. Ring groove; 5. Tension rod; 6. Limiting rod; 7. Return spring; 8. Extension rod; 9. Pin; 10. Roller. Detailed Implementation

[0021] 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.

[0022] Please see Figs. 1-3 A vertical mill grinding roller limiting device includes a grinding roller 1, a fixing ring 2 provided on the outer wall of the grinding roller 1, an mounting ring 3 sleeved on the outer wall of the grinding roller 1, a tension rod 5 slidably mounted on the outer wall of the fixing ring 2, and a return spring 7 sleeved on the outer wall of the tension rod 5, and further includes:

[0023] A detachable component, which is mounted on the tension rod 5, is used to detach the grinding roller 1 from the retaining ring 2.

[0024] There are four sets of tension rods 5, which are distributed in a ring at equal intervals.

[0025] The detachable component includes a limiting rod 6. The ends of the four sets of tension rods 5 that slide into the fixing ring 2 are all fitted with limiting rods 6 that are larger than the diameter of the ends of the tension rods 5.

[0026] The detachable assembly also includes extension rods 8, pins 9 and rollers 10. Extension rods 8 are fixedly connected to the sides of the four sets of limiting rods 6. Pins 9 are fixedly connected to both sides of the extension rods 8 near their ends. Rollers 10 are rotatably sleeved on the outer walls of the two sets of pins 9.

[0027] The outer wall of the fixed ring 2 is provided with a ring groove 4, and the outer wall of the roller 10 is in close contact with the inner wall of the ring groove 4.

[0028] The ends of the two sets of pins 9 on the extension rod 8, which are opposite to each other, are respectively attached to the inner walls of the two sides of the annular groove 4.

[0029] Structural Description: Grinding Roller 1: As a key working component of the vertical grinding roller mill, grinding roller 1 is responsible for performing grinding operations on the grinding disc or other components. Its stability and durability directly affect the overall operating efficiency and production quality of the equipment. The outer wall of grinding roller 1 is equipped with a fixing ring 2 and a mounting ring 3 for limiting and installing the grinding roller;

[0030] Fixing ring 2: Fixing ring 2 is sleeved on the outer wall of grinding roller 1 and is used to limit and fix the grinding roller. The outer wall of fixing ring 2 has an annular groove 4, which fits tightly with roller 10 to ensure the stability of grinding roller during rotation. At the same time, fixing ring 2 also serves as the mounting base for detachable components, providing support for components such as tension rod 5;

[0031] Mounting ring 3: Mounting ring 3 is also fitted onto the outer wall of grinding roller 1, located outside of fixing ring 2. A certain gap is maintained between mounting ring 3 and grinding roller 1 to allow roller 10 to roll within ring groove 4. The main function of mounting ring 3 is to assist in the installation and positioning of grinding roller, and together with roller 10, it forms a support system for the rotation of grinding roller.

[0032] Annular groove 4: Annular groove 4 is formed on the outer wall of the fixed ring 2 and fits tightly against the outer wall of the roller 10. The shape and size of the annular groove 4 match the roller 10, ensuring that the roller can roll smoothly within the annular groove. The setting of the annular groove 4 not only improves the stability of the grinding roller rotation but also reduces friction and wear between the roller and the fixed ring;

[0033] Tension rod 5: Tension rod 5 is slidably mounted on the outer wall of fixed ring 2 and is distributed in a ring at equal intervals. A limiting rod 6 is sleeved at the end of tension rod 5 to limit the sliding range of the tension rod on the fixed ring. The main function of tension rod 5 is as part of a detachable assembly, allowing the grinding roller to be disassembled by sliding and pressing the return spring 7.

[0034] Limiting rod 6: The limiting rod 6 is sleeved on the end of the tension rod 5, and its diameter is larger than the end diameter of the tension rod. The main function of the limiting rod 6 is to prevent the tension rod from falling off the fixing ring during sliding, and at the same time, it serves as the connecting base for the extension rod 8;

[0035] Return spring 7: The return spring 7 is sleeved on the outer wall of the tension rod 5, located between the limiting rod 6 and the fixing ring 2. The main function of the return spring 7 is to provide elastic restoring force, enabling the tension rod 5 to quickly return to its original position when subjected to external force. The inclusion of the return spring 7 not only improves the buffering effect of the device but also ensures the stability of the tension rod during disassembly.

[0036] Extension rod 8: Extension rod 8 is fixed to the side of limiting rod 6, and pins 9 are fixed to both sides near the end. The main function of extension rod 8 is to serve as the mounting base for roller 10, and at the same time, it enables the roller to roll in the annular groove through the connection with pins 9;

[0037] Pin 9: Pin 9 is fixed to both sides of the extension rod 8 near the end, and is used to rotate and connect the roller 10. The pin 9 not only realizes the connection between the roller and the extension rod, but also ensures the smooth rolling of the roller in the annular groove;

[0038] Roller 10: Roller 10 is rotatably sleeved on the outer wall of pin 9 and tightly fitted against the inner wall of annular groove 4. The main function of roller 10 is to reduce friction and wear between the grinding roller and the mounting ring during rotation, while improving the stability and smoothness of the grinding roller's rotation. The roller 10 also makes it easier for the grinding roller to detach from the mounting ring during disassembly.

[0039] Working principle: When the grinding roller 1 rotates, the grinding roller 1 and the mounting ring 3 rotate between the rollers 10 on the four sets of extension rods 8. When the grinding roller 1 rotates and generates an impact force, it squeezes the rollers 10. The rollers 10 transmit the force to the tension rods 5 through the extension rods 8. The impact force is absorbed by the return spring 7 on the tension rods 5. When it is necessary to disassemble the grinding roller 1, the two adjacent sets of tension rods 5 are pulled outward on the fixing ring 2. The limiting rod 6 squeezes the return spring 7 through the sliding of the tension rods 5, causing the return spring 7 to deform and shorten. When the rollers 10 on the two sets of extension rods 8 gradually separate from the inner wall of the mounting ring 3, the grinding roller 1 can be disassembled.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stand mill roller limiting device, comprising a mill roller (1), characterized in that: The outer wall of the grinding roller (1) is provided with a fixing ring (2), the outer wall of the grinding roller (1) is sleeved with a mounting ring (3), the outer wall of the fixing ring (2) is slidably provided with a stretching rod (5), the outer wall of the stretching rod (5) is sleeved with a reset spring (7), and the stretching rod (5) further comprises: A detachable assembly is arranged on the stretching rod (5) and used for detaching the grinding roller (1) from the fixing ring (2).

2. The mill roll limiting device according to claim 1, characterized in that: The stretching rod (5) is provided with four groups, and the four groups of stretching rods (5) are annularly and equidistantly distributed.

3. A roller position limiting device for a roller mill according to claim 2, characterized in that: The detachable assembly comprises a limiting rod (6), and the end portion of each of the four groups of stretching rods (5) slidably extending into the fixing ring (2) is sleeved with the limiting rod (6) which is larger than the diameter of the end portion of the stretching rod (5).

4. A roller position limiting device for a roller mill according to claim 3, characterized in that: The detachable assembly further comprises an extension rod (8), a pin shaft (9) and a roller (10), the side edge of each of the four groups of limiting rods (6) is fixedly connected with the extension rod (8), the two sides of the extension rod (8) are fixedly connected with the pin shaft (9) near the end portion, and the outer walls of the two groups of pin shafts (9) are rotatably sleeved with the roller (10).

5. The mill roll limiting device according to claim 1, characterized in that: The outer wall of the fixing ring (2) is provided with a ring groove (4), and the outer wall of the roller (10) is tightly combined with the inner wall of the ring groove (4).

6. A roller position limiting device for a roller mill according to claim 4, characterized in that: The mutually opposite end portions of the two groups of pin shafts (9) on the extension rod (8) are respectively combined with the inner walls of the two sides of the ring groove (4).

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