Deflection device for roller press

Abstract

The utility model discloses a deflection device for a roller press. The deflection device comprises a concave sphere and a convex sphere, a knuckle bearing in the hydraulic cylinder is connected with one end of the convex sphere through a screw; the convex ball body can move relative to the hydraulic cylinder; the other end of the convex ball body is an arc-shaped convex surface; one end of the concave ball body is an arc-shaped concave surface, the arc-shaped concave surface is matched with the arc-shaped convex surface of the convex ball body, and the arc-shaped concave surface of the concave ball body abuts against the arc-shaped convex surface of the convex ball body; the other end of the concave ball is installed on a movable roller bearing seat, and a movable roller is installed on the movable roller bearing seat. According to the utility model, the deflection structure is greatly simplified, the deflection generated when materials are extruded can be better dealt with, and the safe and stable operation of the roller press is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of roller presses, in particular to a deflection device used for roller presses. Background Art

[0002] Roller press is a new type of equipment that can achieve material layer pressure crushing. It has obvious effects of increasing production and reducing consumption. It has been widely used in the field of cement grinding in my country. Roller press consists of two extrusion rollers that rotate in opposite directions and synchronously, including a movable roller and a fixed roller. When the material with a certain material pressure is continuously brought into the roller space by the extrusion roller through the feeding device, and the hydraulic system applies a strong extrusion force to the extrusion roller, the material becomes a compacted cake under the high pressure and is discharged from under the machine.

[0003] When the movable roller extrude the material, it is easy to produce noise due to the uneven distribution of the material, and the roller gap is skewed and changes frequently.

[0004] Therefore, a deflection device for a roller press is proposed, which greatly simplifies the deflection structure, can better cope with the deflection generated when extruding materials, and ensures the safe and stable operation of the roller press. Utility Model Content

[0005] In view of the technical problems existing in the background technology, the utility model provides a deflection device for a roller press that greatly simplifies the structure of the movable roller bearing seat and the roller shaft deflection device, and can also better cope with the deflection generated when extruding materials without any noise, thereby ensuring the safe and stable operation of the roller press. To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A deflection device for a roller press, the deflection device comprising a concave sphere and a convex sphere;

[0007] The joint bearing inside the hydraulic cylinder is connected to one end of the convex sphere through a screw; the convex sphere is movable relative to the hydraulic cylinder; the other end of the convex sphere is an arc-shaped convex surface;

[0008] One end of the concave sphere is an arc-shaped concave surface, and the arc-shaped concave surface matches the arc-shaped convex surface of the convex sphere, and the arc-shaped concave surface of the concave sphere conflicts with the arc-shaped convex surface of the convex sphere;

[0009] The other end of the concave sphere is installed on the movable roller bearing seat, and the movable roller is installed on the movable roller bearing seat.

[0010] The deflection device also includes a protective cover; the protective cover is a welded part, the welded part is divided into two equal parts, and the welded part is connected to the movable roller bearing seat by bolts.

[0011] There are two deflection devices; the two deflection devices are respectively matched with corresponding movable roller bearing seats; each deflection device includes two hydraulic cylinders and two corresponding spherical bearings.

[0012] The beneficial effects of the utility model are:

[0013] The utility model has a simple structure and greatly reduces the harm caused by the roller deviation of the roller press. When used in conjunction with the hydraulic pressure device, it provides an important guarantee for the stable operation of the roller press. At the same time, the simple structure can greatly reduce the time and cost of routine inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the prior art for coping with the deflection of the roller when it is working;

[0015] Figure 2 for Figure 1 Schematic diagram of the structure of the middle double earring device;

[0016] Figure 3 It is a side view of the double earring device;

[0017] Figure 4 It is a structural schematic diagram of a deflection device for a roller press according to the utility model;

[0018] Figure 5 for Figure 2 Schematic diagram of the internal structure of the deflection device;

[0019] In the figure, 1-hydraulic station, 2-hydraulic cylinder, 3-double-ear seat, 4-spherical bearing, 5-pin shaft, 6-deflection device, 7-movable roller, 8-fixed roller, 9-convex sphere, 10-concave sphere, 11-movable roller bearing seat, 12-protective cover, 13-double-ear ring device, 14-roller cylinder, 15-screw. DETAILED DESCRIPTION

[0020] The roller press is composed of two extrusion rollers that rotate in opposite directions and synchronously, including a movable roller 7 and a fixed roller 8. In the prior art, during the material production process, due to the irregular shape of the material and the unevenness of the feeding material in the length direction of the roller, the non-directional force generated by the extrusion causes the movable roller 7 to deviate and produce noise. Figure 1-Figure 3 As shown, a double earring device 13 was used previously to deal with the roller deviation problem of the roller press. The double earring device 13 includes a double ear seat 3, a spherical bearing 4 and a pin 5. Two seat bodies are arranged on the double ear seat 3, and the two seat bodies are respectively provided with spherical bearings 4. The spherical bearings 4 are installed on the end of the movable roller bearing seat 11 through the corresponding pin 5. When the roller press is working, the pressure of the hydraulic system directly acts on the double earring through the hydraulic cylinder 2, and then is transmitted to the movable roller 7 to extrude the material.

[0021] There are two hydraulic cylinders 2, and the positions of the two hydraulic cylinders 2 correspond to the positions of the two spherical bearings 4, respectively, to ensure that when the feeding material is uneven in the length direction of the roller, the non-directional force generated by the extrusion causes the movable roller 7 to vibrate and displace, and the movable roller bearing seat 11 deflects accordingly. Since the double-ear seat 3 is connected to the movable roller bearing seat 11 through the spherical bearing 4, the thrust of the hydraulic cylinder 2 can directly act on the spherical bearing 4 of the double-ear ring device 13, and then the rotation of the spherical bearing 4 can continue to transmit the force to the end of the movable roller bearing seat 11, thereby realizing the horizontal movement of the movable roller 7, and the roller deviation problem occurring in production can be adjusted in time, but the structure of this device is complicated. Figure 1 It can be seen that in order to meet this structure, the movable roller bearing seat 11 needs to make ear grooves that match the double earrings in the direction of the hydraulic cylinder. Not only is the processing difficult, but the movable roller bearing seat 11 also needs to have a larger size in this direction, which is costly. Due to the high requirements of the double earrings, the processing accuracy is high, and the installation and subsequent disassembly and maintenance are very difficult. Due to the large size and complex structure of the double earrings, and the compact structure of the roller press, the entire movable roller 7 needs to be removed for subsequent maintenance, which consumes a lot of time and cost.

[0022] In order to solve the above technical problems, Figure 4-Figure 5 , a deflection device for a roller press, the deflection device 6 comprising a concave sphere 10 and a convex sphere 9;

[0023] The joint bearing inside the hydraulic cylinder 2 is connected to one end of the convex sphere 9 through a screw 5. The aperture of the connection is relatively large. The convex sphere 9 is sleeved on the screw 15. The convex sphere 9 can deflect relative to the hydraulic cylinder 2 and is equipped with two disc springs with a certain spacing. The other end of the convex sphere 9 is an arc-shaped convex surface; one end of the concave sphere 10 is an arc-shaped concave surface, which is adapted to the arc-shaped convex surface of the convex sphere 9 and the arc-shaped concave surface of the concave sphere 10 conflicts with the arc-shaped convex surface of the convex sphere 9;

[0024] The other end of the concave sphere 10 is mounted on a movable roller bearing seat 11, and the movable roller 7 is mounted on the movable roller bearing seat 11.

[0025] A protective cover 12 is wrapped outside to prevent dust from entering the concave sphere 10 and the convex sphere 9 matching curved surface. The protective cover 12 is a welded part and needs to be divided into two equal parts for easy installation. The cross-section is required to be smooth and flat, and is directly connected to the movable roller bearing seat 11 by bolts.

[0026] The hydraulic pressurizing device is composed of a hydraulic station 1, a hydraulic cylinder 2, a roll-retracting cylinder 14, etc. The thrust of the hydraulic cylinder 2 acts directly on the deflection device 6. The matching curved surface inside it can realize automatic adjustment and alignment of the thrust when the roller press is deflected, so that the movable roller 7 is evenly stressed, thereby ensuring and extending the service life of the bearing inside the movable roller 7 and ensuring the stable operation of the roller press.

[0027] There are two deflection devices; the two deflection devices are respectively matched with the corresponding movable roller bearing seats; Figure 4 In the embodiment, each deflection device comprises two hydraulic cylinders and two corresponding internal spherical bearings.

[0028] like Figure 4-Figure 5 As shown, the working principle and process of the utility model are as follows:

[0029] When the material is extruded, the material distribution is uneven, which can easily cause the movable roller 7 to deflect. The maximum offset is the working stroke of the hydraulic cylinder 2. The concave sphere 10 deflects as the movable roller 7 deflects through the movable roller bearing seat 11. When the concave sphere 10 contacts the convex sphere 9, the rotation of the joint bearing 4 inside the hydraulic cylinder 2 can also drive the convex sphere 9 to deflect accordingly. The arc-shaped convex surface of the convex sphere 9 can still conflict and match with the arc-shaped concave surface of the concave sphere 10, and the hydraulic system can still transmit the force to achieve horizontal movement of the movable roller 7.

Claims

1. A deflection device for a roller press, characterized in that: The deflection device includes a concave sphere and a convex sphere; The joint bearing inside the hydraulic cylinder is connected to one end of the convex sphere through a screw; the convex sphere is movable relative to the hydraulic cylinder; the other end of the convex sphere is an arc-shaped convex surface; One end of the concave sphere is an arc-shaped concave surface, and the arc-shaped concave surface matches the arc-shaped convex surface of the convex sphere, and the arc-shaped concave surface of the concave sphere conflicts with the arc-shaped convex surface of the convex sphere; The other end of the concave sphere is installed on the movable roller bearing seat, and the movable roller is installed on the movable roller bearing seat.

2. The deflection device for a roller press according to claim 1, characterized in that: It also includes a protective cover; the protective cover is a welded part, the welded part is divided into two equal parts, and the welded part is connected to the movable roller bearing seat by bolts.

3. The deflection device for a roller press according to claim 2, characterized in that: There are two deflection devices; the two deflection devices are respectively matched with corresponding movable roller bearing seats; each deflection device includes two hydraulic cylinders and two corresponding spherical bearings.

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