Blade replacing device of pellet powerful mixing machine

Abstract

The utility model relates to a blade replacement device for a pellet powerful mixer, and belongs to the technical field of pellet process equipment in the metallurgical industry. According to the technical scheme, two lead screws (3) are arranged in parallel, a movable connecting plate (2) and a blade fixing plate (4) are respectively fixed on each lead screw (3) through a lead screw nut (5) and a lead screw nut gasket (6), and the two blade fixing plates (4) are respectively clamped on blades of the powerful mixer; each movable connecting plate (2) is connected with one stirring shaft fixing plate (1) through a connecting bolt, a semicircular clamping groove (9) is formed in each stirring shaft fixing plate (1), and the semicircular clamping grooves (9) in the two stirring shaft fixing plates (1) form a circle to be clamped on a stirring shaft of the powerful mixer. The lifting device has the beneficial effects that the stirring shaft of the mixing machine can be lifted to a proper maintenance position, the time for replacing blades of the stirring shaft can be greatly shortened, and the working efficiency of maintenance personnel is improved.

Description

Technical Field

[0001] This utility model relates to a blade replacement device for a pellet high-performance mixer, belonging to the technical field of pelleting process equipment in the metallurgical industry. Background Technology

[0002] The high-intensity pellet mixer is the main imported equipment in the pelletizing area of ​​the belt calciner. Its function is to powerfully mix the pelletizing materials, such as iron concentrate, hydrated lime, and dust. The mixer's agitator blades are the core component of the mixer. Pelletizing production operates 24 hours a day. The iron concentrate used in pelletizing has a high moisture content and specific gravity, resulting in significant wear on the mixer blades. The mixer blades wear out severely and need to be replaced every six months. Due to the lack of specialized tools, each replacement requires four people and seven days, leading to extremely low maintenance efficiency. A continuous seven-day shutdown of the belt calciner would significantly impact production. Utility Model Content

[0003] The purpose of this invention is to provide a blade replacement device for a pellet high-performance mixer, which can greatly shorten the time for replacing the mixing shaft blades, improve the work efficiency of maintenance personnel, and solve the problems existing in the background art.

[0004] The technical solution of this utility model is:

[0005] A blade replacement device for a pellet high-intensity mixer includes a stirring shaft fixing plate, a movable connecting plate, a lead screw, and a blade fixing plate. The lead screw consists of two parallel leads. Each lead screw has a movable connecting plate and a blade fixing plate fixed to it via a lead screw nut and a lead screw nut washer. The two blade fixing plates are respectively clamped onto the blades of the high-intensity mixer. Each movable connecting plate is connected to a stirring shaft fixing plate via connecting bolts. Each stirring shaft fixing plate has a semi-circular groove. The semi-circular grooves on the two stirring shaft fixing plates form a circle that clamps onto the stirring shaft of the high-intensity mixer.

[0006] The movable connecting plate consists of two square steel plates. Each movable connecting plate is provided with bolt holes that mate with connecting bolts. One bolt hole is a circular bolt hole, and the other bolt hole is an elongated open bolt hole.

[0007] The stirring shaft fixing plate consists of two rectangular steel plates arranged vertically.

[0008] The blade fixing plate consists of two rectangular steel plates.

[0009] The beneficial effects of this utility model are: it can lift the mixing shaft of the mixer to a suitable maintenance position, and fix the mixing shaft by adjusting it up and down to prevent it from rotating randomly, which greatly shortens the time for replacing the mixing shaft blades and improves the work efficiency of maintenance personnel. Attached Figure Description

[0010] Figure 1 This is a top view of the present invention;

[0011] Figure 2 This is a front view of the present utility model;

[0012] Figure 3 This is a side view of the present invention;

[0013] In the diagram: 1. Stirring shaft fixing plate; 2. Movable connecting plate; 3. Lead screw; 4. Blade fixing plate; 5. Lead screw nut; 6. Lead screw nut washer; 7. Connecting plate adjusting bolt; 8. Connecting plate fixing bolt. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and examples.

[0015] See attached document Figure 1-3 A blade replacement device for a pellet high-intensity mixer includes a stirring shaft fixing plate 1, a movable connecting plate 2, a lead screw 3, and a blade fixing plate 4. The lead screw 3 consists of two parallel leads. Each lead screw 3 is fixed with a movable connecting plate 2 and a blade fixing plate 4 by a lead screw nut 5 and a lead screw nut washer 6, respectively. The two blade fixing plates 4 are respectively clamped onto the blades of the high-intensity mixer. Each movable connecting plate 2 is connected to a stirring shaft fixing plate 1 by a connecting bolt. Each stirring shaft fixing plate 1 is provided with a semi-circular groove 9. The semi-circular grooves 9 on the two stirring shaft fixing plates 1 form a circle that is clamped onto the stirring shaft of the high-intensity mixer.

[0016] In this embodiment, refer to the appendix Figure 1-3 This device is used for changing the blades of a high-pressure mixer and is installed on the mixing shaft of the mixer. It consists of a mixing shaft fixing plate 1, a movable connecting plate 2, a lead screw 3, a blade fixing plate 4, connecting bolts, etc.

[0017] The stirring shaft fixing plate 1 consists of two pieces, upper and lower, which are clipped onto the stirring shaft. It is a rectangular steel plate, 750mm long and 350mm wide, with a circular center section adjustable between φ350mm and φ450mm. Each plate has two bolts: one is the connecting plate adjusting bolt 7, and the other is the connecting plate fixing bolt 8. In use, the lower plate is fitted onto the shaft first, followed by the upper plate, and then tightened according to the shaft's dimensions.

[0018] The movable connecting plate 2 is a square steel plate with a length of 400mm, one on the left and one on the right. There are four bolts on it, distributed vertically, to connect with the stirring shaft fixing plate. The bottom has a round bolt hole, corresponding to the connecting plate fixing bolt 8; the top has an open strip bolt hole, corresponding to the connecting plate adjusting bolt 7.

[0019] There are two lead screws 3, each 2200mm long and φ10mm in diameter. They are used to connect the movable connecting plate 2 and the blade fixing plate 4. Each lead screw has two nuts and washers. During use, the lead screw nuts are used to make flexible adjustments to tighten the stirring shaft.

[0020] The blade fixing plate 4 is clipped onto the blade. It is made of two 200mm×350mm steel plates and is used to support and clamp the blade during use.

[0021] When using the device, use the stirring shaft fixing plate 1 to hold the stirring shaft in place, and use the movable connecting plate adjusting bolts to tighten it; use the blade fixing plate 4 to hold the blades in place, and finally adjust the screw nut to tighten the entire device to prevent the stirring shaft from rotating, forming a whole unit, which is used to carry out the work of replacing the mixer stirring shaft blades and scrapers.

Claims

1. A pellet pug mill blade replacement device characterized by: It includes a stirring shaft fixing plate (1), a movable connecting plate (2), a lead screw (3) and a blade fixing plate (4). The lead screw (3) consists of two parallel lines. Each lead screw (3) is fixed with a movable connecting plate (2) and a blade fixing plate (4) by a lead screw nut (5) and a lead screw nut washer (6). The two blade fixing plates (4) are respectively clamped on the blades of the high-power mixer. Each movable connecting plate (2) is connected to a stirring shaft fixing plate (1) by a connecting bolt. Each stirring shaft fixing plate (1) is provided with a semi-circular slot (9). The semi-circular slots (9) on the two stirring shaft fixing plates (1) form a circle that is clamped on the stirring shaft of the high-power mixer.

2. A pellet pug mill blade replacement device according to claim 1, wherein: The movable connecting plate (2) consists of two square steel plates. Each movable connecting plate (2) is provided with bolt holes that cooperate with the connecting bolts. One bolt hole is a circular bolt hole, and the other bolt hole is a long strip-shaped open bolt hole.

3. A pellet pug mill blade replacement device as defined in claim 1, wherein: The stirring shaft fixing plate (1) consists of two rectangular steel plates arranged vertically.

4. A pellet pug mill blade replacement device according to claim 1, wherein: The blade fixing plate (4) consists of two rectangular steel plates.

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