Annular cooling machine

Abstract

The utility model discloses an annular cooling machine. The rotary device at least comprises a rotary chassis and an annular rotary groove body arranged on the rotary chassis, the rotary groove body consists of a circular inner side wall and a circular outer side wall which are coaxially arranged; the inner side wall and the outer side wall are integrally arranged through the connecting frame; an annular space between the inner side wall and the outer side wall is a trough; a feeding hole is formed in the rotary groove body; a discharge hole is formed in the outer side wall of the bottom of the rotary groove body; an air inlet is formed in the inner side wall and / or the outer side wall of the lower part of the rotary groove body; and the driving device is used for driving the rotary chassis to drive the rotary groove body to rotate. The utility model has the advantages of high structural strength and reliable work; the equipment is good in sealing performance and high in heat energy recycling rate; the equipment radius is small, and the occupied area is small; and the device has the advantages of few mobile contacts, small abrasion, low later maintenance cost and the like.

Description

Technical Field

[0001] The utility model relates to an annular cooler and belongs to the technical field of sintering equipment. Background Art

[0002] Sintered ore cooler is an important part of the sintered ore production process. Sintered ore is an important raw material in the steel industry and is used in blast furnace ironmaking and other processes. In the production process of sintered ore, it is necessary to cool the ore after high-temperature sintering for subsequent transportation and storage. The existing ore cooling methods mainly include vertical furnace cooling and ring cooler cooling. Among them, vertical furnace cooling has the following main disadvantages:

[0003] 1) Uneven distribution: The vertical furnace itself is a silo-type structure. When discharging, the pellets in the same section are discharged at an uneven speed. The discharge speed is fast at the center of the discharge port, while the discharge speed is slow on both sides. This leads to uneven roasting and consolidation, which affects the quality of the pellets.

[0004] 2) High maintenance cost: The vertical furnace cooler requires frequent maintenance and upkeep. Due to its complex structure, the maintenance cost is high.

[0005] Annular cooler cooling has the following main disadvantages:

[0006] 1) Slow cooling speed: The ring cooler can only cool the upper layer of ore by blowing air. Compared with other cooling methods, the cooling speed of the ring cooler may be slightly slower.

[0007] 2) Low waste heat recovery rate: The ring cooler can only recover waste heat from the high temperature section. Due to its structural form, it can only achieve a sensible heat recovery rate of 40%. Utility Model Content

[0008] In order to overcome the above defects, the utility model proposes an annular cooler, which can achieve efficient cooling effect and heat energy recovery function. The cooler has the advantages of high structural strength and compact size.

[0009] To achieve the above-mentioned purpose, the annular cooler of the utility model at least comprises: a rotary chassis and an annular rotary trough body arranged on the rotary chassis; the rotary trough body is composed of a circular inner wall and a circular outer wall arranged coaxially; the inner wall and the outer wall are integrally arranged through a connecting frame; the annular space between the inner wall and the outer wall is a material trough;

[0010] The rotary tank body is provided with a feed port;

[0011] A discharge port is arranged on the outer side wall of the bottom of the rotary tank;

[0012] An air inlet is arranged on the inner side wall and / or the outer side wall of the lower part of the rotary tank body;

[0013] A driving device is used to drive the rotary chassis to drive the rotary trough body to rotate.

[0014] Furthermore, an upper sealing cover is arranged on the rotary trough body; an air outlet is arranged on the upper sealing cover; and the feed port is arranged on the upper sealing cover.

[0015] Furthermore, a water sealing device is provided between the upper end of the rotary trough body and the upper sealing cover.

[0016] Furthermore, a discharge device is provided on one side of the rotary chassis corresponding to the discharge port.

[0017] Furthermore, an annular air duct is provided on the inner side wall of the rotary trough body corresponding to the air inlet, and the annular air duct is connected with the air inlet on the inner side wall of the rotary trough body.

[0018] Furthermore, the revolving chassis comprises a bottom plate, and a central rotating shaft is arranged at the center of the lower surface of the bottom plate; the central rotating shaft is fixed on the foundation by anchor bolts;

[0019] Two circular tracks coaxially arranged with the central rotating shaft are arranged on the lower surface of the bottom plate; a plurality of supporting rollers are arranged on the foundation corresponding to each circular track;

[0020] A circular transmission gear ring is coaxially arranged on the lower surface of the base plate and the circular track, and the transmission gear ring is meshed with the output gear of the driving motor so that the driving motor drives the movement of the rotary chassis.

[0021] Furthermore, the bottom of the outer wall side wall and the rotary chassis are suspended to form an annular discharge port.

[0022] Furthermore, the unloading device includes a bracket, a driving hydraulic cylinder, a material removal rod, and a lining plate; a unloading bracket fixed on the foundation; a driving hydraulic cylinder is hinged on the unloading bracket; a material removal rod is hinged on the unloading bracket corresponding to the driving hydraulic cylinder; the tail of the material removal rod is hinged to the free end of the driving hydraulic cylinder, and the front end of the material removal rod is located in the discharge port of the outer side wall of the bottom of the rotating trough body.

[0023] Furthermore, the outer surface of the material moving rod is provided with a lining plate made of wear-resistant steel plate.

[0024] Furthermore, the revolving chassis is annular; the central rotating shaft is connected to the revolving chassis via a plurality of spokes;

[0025] The lower part of the annular air duct extends downward to form an annular opening, and the annular opening is located below the spoke; an annular air inlet is arranged in the foundation corresponding to the annular opening, and the upper opening of the annular air inlet is rotatably sealed with the annular opening of the annular air duct; the annular air inlet is connected to the return air duct through a pipeline.

[0026] The utility model has the advantages of high structural strength and reliable operation; good equipment sealing performance and high heat recovery utilization rate; small equipment radius and small footprint; few moving contact parts, small equipment wear and low subsequent maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of an annular cooler embodiment of the utility model;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the upper sealing cover of the illustrated embodiment;

[0029] Figure 3 for Figure 1 A schematic diagram of the rotary tank structure of the illustrated embodiment;

[0030] Figure 4 for Figure 1 A schematic diagram of the rotary chassis structure of the illustrated embodiment;

[0031] Figure 5 for Figure 1 A schematic diagram of the support roller structure of the illustrated embodiment;

[0032] Figure 6 for Figure 1 A schematic diagram of the structure of the unloading device of the illustrated embodiment;

[0033] Figure 7 for Figure 1 A cross-sectional rendering of the illustrated embodiment.

[0034] Figure 8 for Figure 1 A cross-sectional view of the illustrated embodiment.

[0035] Wherein: 1. upper sealing cover, 2. rotary trough body, 3. rotary chassis, 4. supporting roller, 5. unloading device, 6. driving motor, 7. annular air inlet, 1.1. feeding port, 1.2. cover plate, 1.3. air outlet, 1.4. water seal, 2.1 main frame, 2.2. sealing plate, 2.3. annular air duct, 2.4. air inlet, 3.1. central rotating shaft, 3.2. connecting rod, 3.3. frame, 3.4. pad, 3.5. track, 3.6. transmission pin gear, 4.1. lower base, 4.2. bracket, 4.3. roller, 4.4. central shaft, 4.5. shaft end baffle, 5.1. bracket, 5.2. driving hydraulic cylinder, 5.3. material removal rod, 5.4. lining plate. DETAILED DESCRIPTION

[0036] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0037] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The annular cooler of the utility model at least comprises: a rotary chassis 3 and an annular rotary trough body 2 arranged on the rotary chassis; the rotary trough body is composed of a circular inner wall and a circular outer wall arranged coaxially; the inner wall and the outer wall are integrally arranged through a connecting frame; the annular space between the inner wall and the outer wall is a material trough;

[0041] The rotary tank body is provided with a feed inlet; preferably, a sealing cover is provided on the rotary tank body, and the feed inlet is provided on the sealing cover;

[0042] A discharge port is arranged on the outer side wall at the bottom of the rotary trough body; preferably, the bottom of the outer side wall is suspended between the rotary chassis to form an annular discharge port, so that the material accumulated in the trough can be discharged from the annular discharge port at any time by using a material discharging device.

[0043] An air inlet is arranged on the inner wall and / or outer wall of the lower part of the rotary trough body; in order to ensure a better cooling effect, it is best to arrange air inlets on both the inner wall and the outer wall, and introduce a blower etc. at the same time.

[0044] A driving device is used to drive the rotary chassis to drive the rotary trough body to rotate; there are many ways to drive the rotation; generally, a motor is used to drive the rotary trough body by meshing the gear and the gear ring on the chassis.

[0045] During the first operation, the driving device drives the rotary chassis and the annular tank body to rotate simultaneously; the sintering material is fed from the feed port, and as the rotary chassis and the annular tank body rotate, the sintering material is piled layer by layer into the annular tank body; during the feeding process, air is introduced from the air inlet to cool the sintering material in the tank body. When the annular tank body is filled (generally about 4 / 5 of the height of the annular tank body), the unloading device is turned on; as the rotary chassis and the annular tank body rotate, the unloading device unloads the cooled sintering material from the annular tank body layer by layer from the discharge port. After that, the feed port keeps feeding, the discharge port keeps discharging, and the air inlet keeps letting in air for cooling, and the cooling of the sintering material is completed in a cycle.

[0046] The utility model will be further described below in conjunction with the embodiments.

[0047] like Figure 1 and Figure 8 As shown, the annular cooler of the utility model mainly comprises: an upper sealing cover 1, a rotary tank body 2, a rotary chassis 3, a supporting roller 4, a discharge device 5 and a driving motor 6.

[0048] like Figure 2 As shown, the upper sealing cover 1 comprises a feed inlet 1.1, a cover plate 1.2, an air outlet 1.3, and a water seal 1.4. The cover plate 1.2 is welded from a steel plate and reinforcement ribs, and the feed inlet 1.1 and the air outlet 1.3 are welded and fixed on the cover plate 1.2. The water seal 1.4 is installed at the lower edge of the cover plate 1.2.

[0049] like Figure 3 As shown, the rotary tank body 2 includes a main frame 2.1, a cover plate 2.2, an annular air duct 2.3, and an air inlet 2.4. The main frame 2.1 of the rotary tank body 2 is welded by H-shaped steel. The cover plate 2.2 is welded by steel plates. The inner side of the main frame 2.1 is spliced ​​with steel plates to form an annular air duct 2.3, which is used to achieve uniform cooling of the ore in the rotary tank body 2. The air inlet 2.4 is designed at the lower part of the rotary tank body 2 to ensure that the ore is fully cooled and achieve a gradual cooling effect from bottom to top.

[0050] like Figure 4As shown, the slewing chassis 3 includes a central shaft 3.1, a spoke (connecting rod) 3.2, a frame 3.3, a pad 3.4, a track 3.5, and a transmission pin gear (annular gear ring) 3.6. The central shaft 3.1 is fixed to the foundation by anchor bolts to ensure the fixed axis rotation of the slewing chassis 3. The spoke (connecting rod) 3.2 fixes the central shaft 3.1 and the frame 3.3 to ensure the stability of the main body of the slewing chassis 3. The pad 3.4 is made of steel plate and welded to the frame 3.3 to complete the overall structural design of the slewing chassis 3. The track 3.5 is fixed to the bottom of the frame 3.3 by bolts and a pressure plate, and cooperates with the support roller 4 below to achieve stable rotation. The transmission pin gear 3.6 is distributed around the frame 3.3 and fixed to the frame 3.3 by bolts. The transmission pin gear 3.6 is used to cooperate with the output gear of the drive motor to drive the movement of the slewing chassis 3.

[0051] like Figure 5 As shown, the support roller 4 comprises a lower base 4.1, a bracket 4.2, a roller 4.3, a central shaft 4.4, and an end plate 4.5. The lower base 4.1 is fixed to the foundation by anchor bolts. The bracket 4.2 is fixed to the lower base 4.1 by bolts. The central shaft 4.4 passes through the roller 4.3 and is mounted on the bracket 4.2 to ensure that the roller 4.3 can rotate freely without obstruction. The end plate 4.5 is fixed to the bracket 4.2 by bolts to prevent the central shaft 4.4 from axial movement.

[0052] like Figure 6 As shown, the unloading device 5 includes a bracket 5.1, a driving hydraulic cylinder 5.2, a material-moving rod 5.3, and a lining plate 5.4. The bracket 5.1 is fixed to the foundation by anchor bolts. The driving hydraulic cylinder 5.2 is installed on the hydraulic cylinder seat reserved on the bracket 5.1 by a pin shaft, which is used to drive the extension and contraction of the material-moving rod 5.3 to realize the unloading function of the cooled ore on the rotary chassis 3. The material-moving rod 5.3 is welded by steel sections, and the tail and the hydraulic cylinder driving rod are connected by a pin shaft. The center position is connected by a pin shaft and installed on the mounting seat reserved on the bracket 5.1, and can reciprocate freely. The lining plate 5.4 is made of wear-resistant steel plate and is fixed by screws at the front end of the material-moving rod 5.3 and the contact position of the ore to increase the service life of the equipment.

[0053] To sum up, the utility model is a ring cooler with the advantages of high structural strength and reliable operation; good equipment sealing performance and high heat recovery rate; small equipment radius and small footprint; few moving contact parts, small equipment wear and low subsequent maintenance costs.

[0054] The utility model is described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the utility model. Many other changes and modifications that do not depart from the concept and scope of the utility model should be considered as the protection scope of the utility model.

[0055] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0056] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A ring cooler, characterized in that: At least: A rotary chassis and an annular rotary trough body arranged on the rotary chassis; the rotary trough body is composed of a circular inner wall and a circular outer wall arranged coaxially; the inner wall and the outer wall are integrally arranged through a connecting frame; the annular space between the inner wall and the outer wall is a material trough; The rotary tank body is provided with a feed port; A discharge port is arranged on the outer side wall of the bottom of the rotary tank; An air inlet is arranged on the inner wall and / or the outer wall of the lower part of the rotary tank body; A driving device is used to drive the rotary chassis to drive the rotary trough body to rotate.

2. The annular cooler according to claim 1, characterized in that: An upper sealing cover is arranged on the rotary tank body; an air outlet is arranged on the upper sealing cover; and the feed port is arranged on the upper sealing cover.

3. The annular cooler according to claim 1, characterized in that: A water sealing device is arranged between the upper end of the rotary trough body and the upper sealing cover.

4. The annular cooler according to claim 1, characterized in that: A discharging device is arranged on one side of the rotary chassis corresponding to the discharging port.

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