External sealing assembly connection structure for cement kiln solid hazardous waste heat regeneration treatment

Abstract

The utility model discloses an external sealing assembly connection structure for cement kiln solid hazardous waste heat regeneration, and belongs to the technical field of connection structures. An external sealing assembly connection structure for cement kiln solid hazardous waste heat regeneration treatment comprises a furnace body and further comprises a feeding pipe communicated with the upper portion of the furnace body, a connecting assembly communicated with the lower portion of the furnace body, and a discharging valve arranged at the joint of the furnace body and the connecting assembly. The other end of the connecting assembly is communicated with a temperature return cavity, the temperature return cavity is communicated with the cement kiln, the temperature return cavity is communicated with a temperature return pipe, and the other end of the temperature return pipe is communicated with the furnace body; the temperature return cavity conducts high-temperature gas in the cement kiln into the furnace body through a temperature return pipe; according to the utility model, the connection strength of the connection part can be increased, the internal temperature can be prevented from overflowing through the connection part, the problems of process fluctuation, damage to equipment, energy efficiency reduction and the like caused by the fact that cold charge directly enters the cement kiln are avoided, and the impact to the equipment and the reduction of the service life of the equipment caused by direct falling of the material are avoided.

Description

Technical Field

[0001] This utility model relates to the field of connection structure technology, and in particular to an externally sealed connection structure for the reheating of solid and hazardous waste in a cement kiln. Background Technology

[0002] Cement calcination is the core process in cement production. Raw materials undergo physical and chemical changes such as drying, dehydration, carbonate decomposition, and solid-phase reaction in a rotary kiln to finally form clinker. Traditional calcination relies on fossil fuels, resulting in high carbon emissions. The thermal energy in the core high-temperature section of the kiln is still wasted, and the rapid cooling and discharge cause frequent thermal stress damage to the kiln lining. The annual cost of refractory material loss exceeds ten million yuan. In order to save energy loss, the high temperature in the cement kiln is now being recycled and reused. Based on this, this utility model is proposed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a cement kiln treatment solid and hazardous waste reheat external sealing assembly structure that can overcome the above problems or at least partially solve the above problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A reheated externally sealed assembly structure for treating solid and hazardous waste in a cement kiln includes a furnace body and further includes: a feed pipe connected to the upper part of the furnace body, a connecting assembly connected to the lower part of the furnace body, and a discharge valve provided at the connection between the furnace body and the connecting assembly; a reheating chamber connected to the other end of the connecting assembly, the reheating chamber being connected to the cement kiln, a reheating pipe connected to the reheating chamber, and the other end of the reheating pipe being connected to the furnace body; the reheating chamber conducts high-temperature gas from the cement kiln to the furnace body via the reheating pipe.

[0006] Preferably, the furnace body includes a primary furnace cavity, a secondary furnace cavity, and a transition cavity, wherein the diameter of the primary furnace cavity is larger than that of the secondary furnace cavity.

[0007] Furthermore, the reheat pipe is connected to the secondary furnace chamber, and the reheat pipe is connected to a lower ring pipe and an upper ring pipe respectively. Multiple air outlets are opened below the lower ring pipe and the upper ring pipe. The upper ring pipe is fixedly connected to the inner wall of the primary furnace chamber, and the lower ring pipe is fixedly connected to the inner wall of the secondary furnace chamber.

[0008] Furthermore, a support assembly is fixedly connected to the secondary furnace cavity, and a support plate is fixedly connected to the support assembly.

[0009] Furthermore, the support assembly includes a support diagonal rod, an auxiliary support rod, and a tie rod. The tie rod is fixedly connected between the auxiliary support rod and the secondary furnace cavity, and the auxiliary support rod is fixedly connected between the support diagonal rod and the support plate.

[0010] Preferably, the connecting assembly includes a connecting pipe, a flange, and an external connecting plate, with a first groove and a first protrusion respectively provided at both ends of the connecting pipe.

[0011] Furthermore, the external connecting plate is disposed at both ends of the connecting pipe, and the external connecting plate at both ends of the connecting pipe is respectively provided with a second protrusion and a second slot, the external connecting plate is provided with a through hole, and the side of the external connecting plate is provided with a mounting hole.

[0012] Preferably, the furnace body and the connecting assembly are designed with a cavity, and the furnace body and the connecting assembly are internally fixedly connected with reinforcing ribs.

[0013] Compared with the prior art, this utility model provides an externally sealed assembly structure for the reheating of cement kilns for treating solid and hazardous waste, which has the following beneficial effects:

[0014] 1. The cement kiln's externally sealed reheating structure for treating solid and hazardous waste increases the connection strength at the joints by setting up connecting components, and prevents internal temperature from escaping through the joints.

[0015] 2. The cement kiln has an externally sealed reheating structure for treating solid and hazardous waste. By setting up a reheating pipe and furnace body, it can preheat the cold material in advance, avoiding the cold material from directly entering the cement kiln and causing process fluctuations, equipment damage, and reduced energy efficiency.

[0016] 3. The cement kiln's externally sealed reheating assembly for treating solid and hazardous waste uses a connecting component that is angled to connect to the reheating chamber, thus preventing materials from falling directly and causing significant impact on the equipment, which would reduce its service life.

[0017] The parts of this device not covered are the same as or can be implemented using existing technologies. This utility model can increase the connection strength at the joints and prevent internal temperature from overflowing through the joints, thus preventing cold material from directly entering the cement kiln and causing process fluctuations, damage to the equipment, and reduced energy efficiency. It also prevents materials from falling directly and causing direct impact on the equipment, thereby reducing the service life of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the externally sealed assembly structure for treating solid and hazardous waste in a cement kiln, as proposed in this utility model.

[0019] Figure 2 This utility model proposes an externally sealed assembly structure for the reheating of solid and hazardous waste in cement kilns. Figure 1 A magnified structural diagram of part A in the middle;

[0020] Figure 3This is a schematic diagram of the internal structure of the furnace body in a regenerative external sealing assembly structure for treating solid and hazardous waste in a cement kiln, as proposed in this utility model.

[0021] Figure 4 This is a cross-sectional view of the connecting component in the external sealing assembly structure for the reheating of solid hazardous waste in a cement kiln, as proposed in this utility model.

[0022] Figure 5 This utility model proposes an externally sealed assembly structure for the reheating of solid and hazardous waste in cement kilns. Figure 4 Enlarged structural diagram of part B.

[0023] In the diagram: 1. Furnace body; 11. Feed pipe; 12. Secondary furnace chamber; 13. Transition chamber; 131. Feed valve; 14. Support plate; 15. Reinforcing rib; 16. Primary furnace chamber; 2. Regeneration pipe; 21. Lower ring pipe; 22. Upper ring pipe; 3. Support assembly; 31. Support diagonal rod; 32. Auxiliary support rod; 33. Tie rod; 4. Connecting assembly; 41. Connecting pipe; 411. First slot; 412. First protrusion; 42. Flange; 43. External connecting plate; 431. Second protrusion; 432. Through hole; 433. Mounting hole; 434. Second slot; 5. Regeneration chamber. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Example 1: Refer to Figures 1-5 A reheating external sealing assembly structure for treating solid and hazardous waste in a cement kiln includes a furnace body 1, and further includes: a feed pipe 11 connected to the upper part of the furnace body 1, a connecting assembly 4 connected to the lower part of the furnace body 1, and a discharge valve 131 provided at the connection between the furnace body 1 and the connecting assembly 4; the other end of the connecting assembly 4 is connected to a reheating chamber 5, the reheating chamber 5 is connected to the cement kiln, and a reheating pipe 2 is connected to the reheating chamber 5, the other end of the reheating pipe 2 is connected to the furnace body 1; the reheating chamber 5 conducts high-temperature gas in the cement kiln to the furnace body 1 through the reheating pipe 2.

[0027] In this invention, solid hazardous waste and cement raw materials are fed into the furnace body 1 through two feed pipes 11. High-temperature air from the cement kiln enters the reheating chamber 5 and is guided by the reheating pipe 2 to the interior of the furnace body 1. This allows the residual heat in the cement kiln to preheat the materials inside the furnace body 1. To prevent cold materials from directly entering the cement kiln and causing process fluctuations, equipment damage, and reduced energy efficiency, the connecting component 4 is connected to the reheating chamber 5 at an inclined angle. This prevents materials from falling directly and causing significant impact on the equipment, thus reducing its service life. The discharge valve 131 is driven by a motor, and a temperature sensor is installed inside the furnace body 1 to remotely control the opening and closing of the discharge valve 131, ensuring that the cold materials are preheated for a sufficient time before entering the reheating chamber 5.

[0028] Example 2: Refer to Figures 1-5 Similar to Embodiment 1, but with a further improvement: the furnace body 1 includes a primary furnace chamber 16, a secondary furnace chamber 12, and a transition chamber 13. The diameter of the primary furnace chamber 16 is larger than that of the secondary furnace chamber 12. A return pipe 2 is connected to the secondary furnace chamber 12. The return pipe 2 is connected to a lower ring pipe 21 and an upper ring pipe 22. Multiple air outlets are provided below both the lower ring pipe 21 and the upper ring pipe 22. The upper ring pipe 22 is fixedly connected to the inner wall of the primary furnace chamber 16, and the lower ring pipe 21 is fixedly connected to the inner wall of the secondary furnace chamber 12. A support assembly 3 is fixedly connected to the secondary furnace chamber 12, and a support plate 14 is fixedly connected to the support assembly 3. The support assembly 3 includes a support diagonal rod 31, an auxiliary support rod 32, and a pull rod 33. The pull rod 33 is fixedly connected to... Between the auxiliary support rod 32 and the secondary furnace cavity 12, the auxiliary support rod 32 is fixedly connected between the support diagonal rod 31 and the support plate 14. The connecting assembly 4 includes a connecting pipe 41, a flange 42 and an external connecting plate 43. The two ends of the connecting pipe 41 are respectively provided with a first slot 411 and a first protrusion 412. The external connecting plate 43 is provided at both ends of the connecting pipe 41. The external connecting plate 43 at both ends of the connecting pipe 41 is respectively provided with a second protrusion 431 and a second slot 434. The external connecting plate 43 is provided with a through hole 432 and an installation hole 433 is provided on the side of the external connecting plate 43. The furnace body 1 and the connecting assembly 4 are designed as a cavity. The furnace body 1 and the connecting assembly 4 are internally fixedly connected with reinforcing ribs 15.

[0029] In this utility model, the furnace body 1 is divided into three sections, and the diameter of the three sections is shortened in a stepped manner, so as to achieve the effect of multi-stage falling, making the cold material in the furnace body 1 more uniformly heated. The connection between the first-stage furnace chamber 16 and the second-stage furnace chamber 12 is provided with a ramp, so as to avoid the cold material remaining at the connection and being unable to fall.

[0030] High-temperature air is discharged through the exhaust holes opened on the lower ring pipe 21 and the upper ring pipe 22 through the return pipe 2. The exhaust holes are opened below the lower ring pipe 21 and the upper ring pipe 22, which can prevent cold material from entering the return pipe 2 through the exhaust hole and causing the exhaust hole to be blocked. By setting the upper ring pipe 22 and the lower ring pipe 21 in the secondary furnace chamber 12 and the primary furnace chamber 16, the temperature in the furnace body 1 can be more evenly distributed.

[0031] The support component 3 can support the support plate 14, thereby supporting and fixing the primary furnace cavity 16, preventing damage to the connection of the primary furnace cavity 16 due to long-term use. By setting the support diagonal bar 31 and auxiliary support bar 32, the support area is divided into multiple triangular support areas, thereby increasing the stability of the support. By setting the tie bar 33, the force-bearing points of the support component 3 can be increased, thereby preventing the support component 3 from falling off under force.

[0032] Both the connecting component 4 and the side wall of the furnace body 1 are hollow, with heat insulation material added inside the hollow part. To increase the support of the device, multiple sets of reinforcing ribs 15 are arranged in a triangular pattern inside the hollow part, thereby increasing the support and stability of the reinforcing ribs 15. The first protrusion 412 and the first slot 411 on the connecting pipe 41 facilitate the docking of the two connecting pipes 41. The first protrusion 412 also has a cavity, thereby ensuring that the connection of the two connecting pipes 41 has heat insulation capability. The two connecting pipes 41 are fixedly connected by the flange 42, and the docking of the external connecting plate 43 increases the firmness of the connection point. The through hole 432 corresponds to the hole on the flange 42, thereby facilitating the fixing of the flange 42 during installation. The user can also fix the external heat insulation adhesive layer on the side of the external connecting plate 43 through the external mounting hole 433, thereby further preventing the internal temperature from leaking out through the connection.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cement kiln for the treatment of solid hazardous waste, with external sealing of the heat recovery, comprising a furnace body (1), characterized in that, Also include: The upper part of the furnace body (1) is communicated with the feeding pipe (11), the lower part of the furnace body (1) is communicated with the connecting assembly (4), and the connecting part of the furnace body (1) and the connecting assembly (4) is provided with a discharging valve (131); The other end of the connecting assembly (4) is communicated with a temperature return cavity (5), the temperature return cavity (5) is communicated with a cement kiln, the temperature return cavity (5) is communicated with a temperature return pipe (2), and the other end of the temperature return pipe (2) is communicated with the furnace body (1). The temperature return cavity (5) conducts the high-temperature gas in the cement kiln into the furnace body (1) through the temperature return pipe (2).

2. A cement kiln process solid waste incineration heat recovery external sealing group connection structure according to claim 1, characterized in that, The furnace body (1) comprises a primary furnace cavity (16), a secondary furnace cavity (12) and a transition cavity (13), and the diameter of the primary furnace cavity (16) is greater than that of the secondary furnace cavity (12).

3. A cement kiln process solid waste incineration heat recovery external sealing group connection structure according to claim 2, characterized in that, The temperature return pipe (2) is communicated into the secondary furnace cavity (12), the temperature return pipe (2) is respectively communicated with a lower ring pipe (21) and an upper ring pipe (22), a plurality of air outlets are formed in the lower part of the lower ring pipe (21) and the upper ring pipe (22), the upper ring pipe (22) is fixedly connected to the inner wall of the primary furnace cavity (16), and the lower ring pipe (21) is fixedly connected to the inner wall of the secondary furnace cavity (12).

4. A cement kiln process solid waste incineration heat recovery external sealing group connection structure according to claim 3, characterized in that, The secondary furnace cavity (12) is fixedly connected with a support assembly (3), and the support assembly (3) is fixedly connected with a support plate (14).

5. A cement kiln process solid waste incineration heat recovery external sealing group connection structure according to claim 4, characterized in that, The support assembly (3) comprises a support inclined rod (31), an auxiliary support rod (32) and a pull rod (33), the pull rod (33) is fixedly connected between the auxiliary support rod (32) and the secondary furnace cavity (12), and the auxiliary support rod (32) is fixedly connected between the support inclined rod (31) and the support plate (14).

6. A cement kiln process solid waste incineration heat recovery external sealing group connection structure according to claim 1, characterized in that, The connecting assembly (4) comprises a connecting pipeline (41), a flange (42) and an external connecting disc (43), and the two ends of the connecting pipeline (41) are respectively provided with a first clamping groove (411) and a first protrusion (412).

7. A cement kiln process solid waste incineration regenerative external seal group connection structure according to claim 6, characterized in that, The external connecting disc (43) is arranged at the two ends of the connecting pipeline (41), and the external connecting disc (43) arranged at the two ends of the connecting pipeline (41) is respectively provided with a second protrusion (431) and a second clamping groove (434), a through hole (432) is formed in the external connecting disc (43), and a mounting hole (433) is formed in the side surface of the external connecting disc (43).

8. A cement kiln process solid waste incineration heat recovery external sealing group connection structure according to claim 1, characterized in that, The furnace body (1) and the connecting assembly (4) are designed as a hollow cavity, and the inside of the furnace body (1) and the connecting assembly (4) is fixedly connected with a reinforcing rib (15).

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