Gas burning cement shaft kiln

Abstract

The utility model relates to the technical field of shaft kilns, and discloses a gas burning cement shaft kiln. The gas burning cement shaft kiln comprises a shaft kiln device, an equipment combustion layering mechanism is installed in the shaft kiln device, the left side of the shaft kiln device is connected with a heat storage mechanism, the equipment combustion layering mechanism comprises a branch ring installed in the shaft kiln device, a barrier used for clinker layering combustion is installed in the middle of the branch ring, and the branch ring is connected with the heat storage mechanism. And an equipment opening is formed in the surface of the shaft kiln device. According to the vertical kiln device, the branch rings are installed in the vertical kiln device, the barriers are installed in the branch rings, the vertical kiln device is divided into three stages through the arrangement of the branch rings and the barriers, and raw materials which are prone to combustion and high in combustion heat can be placed at the bottom of the vertical kiln device to be combusted; raw materials which are not prone to combustion or raw materials which are long in combustion speed are placed above the branch rings and the barriers to be combusted, the combustion speed of the different raw materials can be increased, and the combustion efficiency of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical kilns, in particular to a gas-fired cement vertical kiln. Background Art

[0002] Cement vertical kiln is a kind of equipment mainly used for cement clinker production, also known as vertical kiln. Its main function is to calcine limestone, clay, high-aluminum clinker, nano-calcium, magnesia and cement clinker, etc. The working principle of cement vertical kiln is to transport the high-temperature gas in the combustion chamber to the material layer in the vertical kiln, so that the clinker is sintered into cement clinker at an extremely high temperature. In these areas, fuel and air burn at high temperature to produce a large amount of high-temperature gas. After passing through the preheater and decomposition furnace, these gases enter the kiln body and exchange heat with the clinker in the material layer, so that the clinker undergoes a chemical reaction under high temperature and high pressure conditions to eventually form cement clinker. The clinker enters the cooling chamber from the top of the kiln and, after a series of cooling operations, becomes cement clinker, which can be used to make various cement products.

[0003] The existing referenceable Chinese utility model patent with announcement number: CN220187391U discloses a biofuel vertical kiln, which belongs to the field of vertical kiln technology. In the technical scheme, the vertical kiln body, smoke exhaust device, cleaning device and dust removal part are all arranged on one side of the vertical kiln body, and the dust removal part is arranged on one side of the cleaning device. The cleaning device includes a main assembly, a cleaning box and a collecting assembly. The main assembly is arranged inside the cleaning box, one side of the cleaning box is fixedly connected to the smoke exhaust device, and the collecting assembly is fixedly connected to the bottom end of the smoke exhaust device. The first disc is driven to rotate by the driving member, so that the belt rotates, and one side of the limit column is fixedly connected to one side of the belt. When the belt rotates, the limit rod is driven to move, so that the limit rod is movably connected in the groove provided on the horizontal plate, so that the horizontal plate can reciprocate on the fixed plate, thereby driving the cleaning rod to reciprocate. The device realizes automatic reciprocating cleaning of impurities on the filter screen, and improves the filtering effect to a certain extent.

[0004] Based on the search of the above patents and in combination with the equipment in the prior art, it was found that since the vertical kiln generates a large amount of heat during use, the heat is stored inside the vertical kiln, which can easily cause heat loss and waste. In addition, multiple materials are burned inside the vertical kiln, and the different calcination temperatures of the materials will cause the heat volatilized by the materials to be different. The combustion of low volatile heat can easily lead to insufficient heat supply inside the vertical kiln. The existence of these problems affects the use of the device. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a gas-fired cement vertical kiln, which has the advantages of heat preservation and stratified combustion of raw materials, and solves the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas-fired cement vertical kiln, comprising a vertical kiln device, wherein an equipment combustion stratification mechanism is installed inside the vertical kiln device, a heat storage mechanism is connected to the left side of the vertical kiln device, and the equipment combustion stratification mechanism comprises: a split ring installed inside the vertical kiln device, a partition for clinker stratification combustion is installed in the middle of the split ring, an equipment port is installed on the surface of the vertical kiln device, and a fence is fixedly installed on the outside of the vertical kiln device;

[0009] The heat storage mechanism includes: a heat storage cylinder connected to the left side of the vertical kiln device, a barrel mouth screw is installed above the heat storage cylinder, and an exhaust pipe is connected above the barrel mouth screw, and a branch pipe for absorbing heat at different levels is connected to one side of the exhaust pipe, a valve for heat control is installed at one end of the branch pipe, and a connecting screw is installed at the bottom of the exhaust pipe.

[0010] As a preferred technical solution of the utility model, a discharge hole is installed on the top of the vertical kiln device, and a ladder frame is installed in front of the vertical kiln device; the ladder frame is convenient for staff to explore the internal situation of the vertical kiln device.

[0011] As a preferred technical solution of the utility model, a top ring is connected below the discharge hole, a connecting rod is connected below the top ring, and a valve ring is installed below the connecting rod, a louver is connected inside the valve ring; the valve ring enables the louver to be installed.

[0012] As a preferred technical solution of the utility model, the vertical kiln device is divided into five sections at equal intervals, and the top of the escalator frame is located in the second section of the vertical kiln device, and the number of equipment openings is five; the equipment openings are convenient for staff to detect the internal conditions of the vertical kiln device.

[0013] As a preferred technical solution of the utility model, one end of the exhaust pipe is connected to the top of the vertical kiln device, and the exhaust pipe runs through the interior of the vertical kiln device, and the branch pipes are equidistantly arranged inside the vertical kiln device, the heat storage cylinder is connected to the vertical kiln device through the exhaust pipe, and the heat storage cylinder is cylindrical in shape; the heat storage cylinder can store the heat generated by the vertical kiln device.

[0014] As a preferred technical solution of the utility model, the louvers are equidistantly distributed inside the valve ring, and the valve ring is arranged at the inner top of the vertical kiln device, and the outer side of the valve ring is installed on the inner wall of the vertical kiln device, the valve ring is connected to the top ring through a connecting rod, and the louvers can be rotated at an angle inside the valve ring; the rotation opening adjustment of the louvers can adjust the discharge size of the vertical kiln device.

[0015] As a preferred technical solution of the utility model, the vertical kiln device has a cylindrical shape, and the bottom of the vertical kiln device and the bottom of the heat storage cylinder are located on the same horizontal line; the vertical kiln device can calcine clinker.

[0016] Compared with the prior art, the utility model provides a gas-fired cement vertical kiln, which has the following beneficial effects:

[0017] 1. The utility model installs an exhaust pipe on the top of the vertical kiln device, and installs a heat storage cylinder at one end of the exhaust pipe, so that the vertical kiln device and the heat storage cylinder are connected, and the exhaust pipe runs through the interior of the vertical kiln device. The branch pipe and valve connected to one side of the exhaust pipe can absorb and store the heat of each stage inside the vertical kiln device, so that the heat storage cylinder can absorb heat in sections, and it is also convenient for the heat storage cylinder to uniformly store the heat generated by the vertical kiln device. This design can store the heat generated by the vertical kiln device, so that the heat can be recycled in the later stage, avoiding heat waste, and can also reduce the burning of raw materials in the later vertical kiln device, thereby saving production costs and improving economic benefits;

[0018] 2. The utility model has a dividing ring installed inside the vertical kiln device, and a partition fence installed inside the dividing ring. The arrangement of the dividing ring and the partition fence divides the vertical kiln device into three stages. Raw materials that are easy to burn and have a high combustion heat can be placed at the bottom of the vertical kiln device for combustion, and raw materials that are not easy to burn or have a longer combustion speed can be placed above the dividing ring and the partition fence for combustion. The combustion speed of different raw materials can be accelerated and the combustion efficiency of the equipment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the heat storage cylinder assembly of the utility model structure;

[0021] Figure 3 This is a schematic diagram of the components of the vertical kiln device of the utility model structure;

[0022] Figure 4 This is a schematic diagram of the discharge hole assembly of the utility model structure;

[0023] Among them: 1. Vertical kiln device; 11. Equipment opening; 12. Guardrail; 13. Branch ring; 14. Partition fence; 2. Ladder frame; 3. Discharge hole; 31. Top ring; 32. Connecting rod; 33. Valve ring; 34. Shutter fan; 4. Heat storage cylinder; 41. Cylinder mouth screw; 42. Exhaust pipe; 43. Branch pipe; 44. Valve; 45. Connecting screw. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1 — Figure 4 In this embodiment, a gas-fired cement vertical kiln includes: a vertical kiln device 1, an equipment combustion stratification mechanism is installed inside the vertical kiln device 1, a heat storage mechanism is connected to the left side of the vertical kiln device 1, and the equipment combustion stratification mechanism includes: a split ring 13 installed inside the vertical kiln device 1, a partition 14 is installed in the middle of the split ring 13, and an equipment port 11 is installed on the surface of the vertical kiln device 1, and a fence 12 is fixedly installed on the outside of the vertical kiln device 1; the vertical kiln device 1 is equidistantly divided into five sections, and the top of the escalator frame 2 is located at the second section of the vertical kiln device 1, and the number of equipment ports 11 set is five.

[0028] Specifically, the vertical kiln device 1 is divided into five sections at equal intervals, and a dividing ring 13 and a partition fence 14 are installed inside the vertical kiln device 1. The arrangement of the dividing ring 13 and the partition fence 14 divides the interior of the vertical kiln device 1 into sections, so that flammable and high-calorie clinker can be placed at the bottom of the vertical kiln device 1, and clinker with a longer burning time can be placed above the dividing ring 13 and the partition fence 14, thereby accelerating the burning speed of the clinker.

[0029] A discharge hole 3 is installed at the top of the vertical kiln device 1, a top ring 31 is connected below the discharge hole 3, a connecting rod 32 is connected below the top ring 31, a valve ring 33 is installed below the connecting rod 32, and a shutter fan 34 is connected inside the valve ring 33; the shutter fans 34 are equidistantly distributed inside the valve ring 33, and the valve ring 33 is arranged at the top of the interior of the vertical kiln device 1, and the outer side of the valve ring 33 is installed on the inner wall of the vertical kiln device 1, the valve ring 33 is connected to the top ring 31 through the connecting rod 32, and the shutter fan 34 can be rotated at an angle inside the valve ring 33; and a ladder frame 2 is installed in front of the vertical kiln device 1.

[0030] Specifically, a discharge hole 3 is installed at the top of the vertical kiln device 1, and a top ring 31, a connecting rod 32, a valve ring 33 and a shutter fan 34 are respectively arranged below the discharge hole 3. The shutter fan 34 rotates inside the valve ring 33, and the opening size of the shutter fan 34 is adjusted, thereby adjusting the discharge amount of the vertical kiln device 1.

[0031] The heat storage mechanism includes: a heat storage cylinder 4 connected to the left side of the vertical kiln device 1, a cylinder mouth screw 41 is installed above the heat storage cylinder 4, and an exhaust pipe 42 is connected to the top of the cylinder mouth screw 41, and a branch pipe 43 is connected to one side of the exhaust pipe 42, a valve 44 is installed at one end of the branch pipe 43, and a connecting screw 45 is installed at the bottom of the exhaust pipe 42; one end of the exhaust pipe 42 is connected to the top of the vertical kiln device 1, and the exhaust pipe 42 runs through the interior of the vertical kiln device 1, and the branch pipe 43 is equidistantly arranged inside the vertical kiln device 1, the heat storage cylinder 4 is connected to the vertical kiln device 1 through the exhaust pipe 42, and the shape of the heat storage cylinder 4 is cylindrical; the shape of the vertical kiln device 1 is cylindrical, and the bottom of the vertical kiln device 1 and the bottom of the heat storage cylinder 4 are located on the same horizontal line.

[0032] Specifically, an exhaust pipe 42 is connected between the vertical kiln device 1 and the heat storage cylinder 4, and the exhaust pipe 42 runs through the interior of the vertical kiln device 1, and a branch pipe 43 is installed on one side of the exhaust pipe 42, and the branch pipe 43 is equidistantly arranged inside the vertical kiln device 1, and a valve 44 is installed at one end of the branch pipe 43, and the valve 44 controls the closing of the branch pipe 43, so that the branch pipe 43 can absorb heat according to the heat situation inside the vertical kiln device 1, thereby realizing heat storage.

[0033] When in use, raw materials such as limestone, clay and cement clinker are put into the interior of the vertical kiln device 1. The vertical kiln device 1 can calcine various raw materials so that the clinker is sintered into cement clinker at an extremely high temperature. The interior of the vertical kiln device 1 is installed with a dividing ring 13 and a partition fence 14. The arrangement of the dividing ring 13 and the partition fence 14 divides the interior of the vertical kiln device 1 into layers, so that the flammable and high-calorie clinker is arranged at the bottom of the vertical kiln device 1, and the clinker with a longer burning time is placed above the dividing ring 13 and the partition fence 14, so as to speed up the combustion and molding of the clinker. When the raw materials are burning, a discharge hole 3 is installed on the top of the vertical kiln device 1, and a valve ring 33 is connected below the discharge hole 3. The internal device of the valve ring 33 has a The leaf fan 34 is used to adjust the size of the leaf fan 34, thereby controlling the size of the heat outlet inside the vertical kiln device 1. When the heat inside the vertical kiln device 1 is continuously discharged, an exhaust pipe 42 is installed throughout the interior of the vertical kiln device 1, and one end of the exhaust pipe 42 is connected to a heat storage cylinder 4. The heat storage cylinder 4 introduces the heat inside the vertical kiln device 1 by means of the exhaust pipe 42. A branch pipe 43 is installed on one side of the exhaust pipe 42. The branch pipe 43 is equidistantly arranged inside the vertical kiln device 1. The branch pipe 43 can be individually controlled by means of the valve 44, so that the branch pipe 43 can complete independent switching, which is convenient for the heat storage cylinder 4 to absorb and store the heat inside the vertical kiln device 1 at different stages.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas-fired cement shaft kiln, comprising a shaft kiln device (1), wherein an equipment combustion stratification mechanism is installed inside the shaft kiln device (1), and a heat storage mechanism is connected to the left side of the shaft kiln device (1), characterized in that: The equipment combustion stratification mechanism comprises: a split ring (13) installed inside the vertical kiln device (1), a partition fence (14) installed in the middle of the split ring (13), an equipment port (11) installed on the surface of the vertical kiln device (1), and a surrounding rod (12) fixedly installed on the outside of the vertical kiln device (1); The heat storage mechanism comprises: a heat storage cylinder (4) connected to the left side of the vertical kiln device (1), a cylinder mouth screw (41) is installed above the heat storage cylinder (4), an exhaust pipe (42) is connected above the cylinder mouth screw (41), a branch pipe (43) is connected to one side of the exhaust pipe (42), a valve (44) is installed at one end of the branch pipe (43), and a connecting screw (45) is installed at the bottom of the exhaust pipe (42).

2. A gas-fired cement shaft kiln according to claim 1, characterized in that: A discharge hole (3) is installed on the top of the vertical kiln device (1), and a ladder frame (2) is installed in front of the vertical kiln device (1).

3. A gas-fired cement shaft kiln according to claim 2, characterized in that: A top ring (31) is connected below the discharge hole (3), a connecting rod (32) is connected below the top ring (31), a valve ring (33) is installed below the connecting rod (32), and a shutter fan (34) is connected inside the valve ring (33).

4. A gas-fired cement shaft kiln according to claim 2, characterized in that: The vertical kiln device (1) is divided into five sections at equal intervals, the top of the ladder frame (2) is located at the second section of the vertical kiln device (1), and the number of equipment openings (11) is five.

5. A gas-fired cement shaft kiln according to claim 1, characterized in that: One end of the exhaust pipe (42) is connected to the top of the vertical kiln device (1), and the exhaust pipe (42) runs through the interior of the vertical kiln device (1), and the branch pipes (43) are equidistantly arranged inside the vertical kiln device (1), and the heat storage cylinder (4) is connected to the vertical kiln device (1) through the exhaust pipe (42), and the heat storage cylinder (4) is cylindrical in shape.

6. A gas-fired cement shaft kiln according to claim 3, characterized in that: The louver fans (34) are evenly distributed inside the valve ring (33), and the valve ring (33) is arranged at the top of the interior of the vertical kiln device (1), and the outer side of the valve ring (33) is installed on the inner wall of the vertical kiln device (1). The valve ring (33) is connected to the top ring (31) through a connecting rod (32), and the louver fans (34) can be rotated at an angle inside the valve ring (33).

7. A gas-fired cement shaft kiln according to claim 1, characterized in that: The vertical kiln device (1) has a cylindrical shape, and the bottom of the vertical kiln device (1) and the bottom of the heat storage cylinder (4) are located on the same horizontal line.

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