Discharging sealing device of external alkali returning steam calcining furnace

Abstract

The utility model relates to the field of sodium carbonate production, and discloses a discharging sealing device of an external alkali returning steam calcining furnace, which comprises a discharging box, a barrel is rotatably arranged in the discharging box, a plurality of supports are fixedly mounted on the outer side of the discharging box, elastic plates are fixedly mounted at two ends of the discharging box respectively, and the elastic plates are fixedly connected with the barrel. One end of each elastic plate is fixedly connected with one end of the corresponding fixed ring, the side, close to the support, of each support is fixedly connected with a spring, the other end of each spring is fixedly connected with one end of the corresponding fixed ring, and the two ends of the barrel are fixedly connected with movable rings attached to one ends of the fixed rings correspondingly; the device disclosed by the utility model has higher sealing performance in the discharging process.

Description

Technical Field

[0001] The utility model relates to the field of soda ash production, in particular to a discharge sealing device for an external-return alkali steam calciner. Background Art

[0002] At present, the core large-scale equipment for domestic soda ash production, the external-return alkali rotary steam calciner, is widely used in various large-scale soda ash production plants due to its advantages such as stable operation, high efficiency, and large output. In particular, the external-return alkali rotary steam calciner with a diameter of more than 3 meters is more commonly used. Traditionally, the discharge part of such a calciner mainly consists of a discharge screw and a discharge box, followed by a discharge screw auger and a return alkali scraper. In the actual chemical production process, due to reasons such as the large size of the furnace body, fluctuations in the materials entering the calciner upstream, changes in steam pressure, and adjustment of the furnace rotation speed, etc., the discharge of the calciner is very unstable. Especially when the materials suddenly increase, the discharge screw auger simply cannot convey the materials out. Even if the materials are barely conveyed to the return alkali scraper, it is very easy to cause the current of the return alkali scraper to increase. Whether the discharge screw auger is blocked and stopped or the return alkali scraper is blocked and stopped, it will bring a very great impact on production operations, with a long processing time and a large loss of discharged materials. Almost every year, there are multiple parking failures caused by discharge fluctuations. Even under normal production operation conditions, the operators are highly nervous, closely monitoring the changes of various data, and immediately adjusting once there is a fluctuation, which also limits the production capacity and is not conducive to the stable, normal, full, and excellent operation requirements of soda ash chemical production.

[0003] For example, the utility model with the publication (announcement) number: CN208998559U discloses a discharge device for an external-return alkali rotary steam calciner, which includes a base and a discharge adjustment box arranged on the top of the base. The top of the discharge adjustment box is provided with an alkali material inlet. Inside the discharge adjustment box, several groups of alkali material crushing tool assemblies are arranged horizontally side by side. Each group of alkali material crushing tool assemblies is composed of a rotating tool shaft and crushing tools evenly arranged along the circumferential direction of the rotating tool shaft. Inside the discharge adjustment box below the alkali material crushing tool assemblies, several groups of alkali material anti-blocking assemblies are arranged vertically side by side. Each group of alkali material anti-blocking assemblies is composed of a synchronous rotating shaft and several anti-blocking adjustment plates arranged at intervals along the circumferential direction of the synchronous rotating shaft. A spiral discharge assembly is arranged inside the base; the middle part of the discharge adjustment box has an upper-wide and lower-narrow structure; on each synchronous rotating shaft, a gear set of the same specification and a synchronous transmission belt for cooperation are installed.

[0004] The device of the above-mentioned utility model sets tools and an anti-blocking structure in the discharge box to avoid damage to the equipment due to blockage and stop, resulting in the stagnation of the production line. However, its discharge box is connected to the rotating calciner cylinder, and the sealing performance at the connection is difficult to guarantee, affecting its processing and production process. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a discharge sealing device for an external-return alkali steam calciner, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: A discharge sealing device for an external-return alkali steam calciner, including a discharge box, a cylinder body is rotatably arranged inside the discharge box, and several brackets are fixedly installed on the outside of the discharge box. Elastic plates are fixedly installed at both ends of the discharge box, and one end of each elastic plate is fixedly connected to one end of a fixed ring. One side of each bracket close to the bracket is fixedly connected with a spring, and the other end of each spring is fixedly connected to one end of each fixed ring. Moving rings that are in contact with one end of the fixed rings are fixedly connected to both ends of the cylinder body.

[0007] Preferably: The several brackets are annularly distributed along both sides of the discharge box.

[0008] Preferably: A discharge port is arranged at the bottom end of the discharge box.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] In the present utility model, through the elastic force of each spring and the elastic plates, during the discharging process, the fixed rings fixedly connected to one end of each spring can closely fit the outer sides of the moving rings that rotate along with the cylinder body and are fixedly connected to one end of the cylinder body, thereby ensuring the sealing performance of the device connection. Description of the Drawings

[0011] Figure 1 is a structural schematic diagram of the present utility model;

[0012] Figure 2 is a side view schematic diagram of the structure of the present utility model;

[0013] Figure 3 is a partially enlarged schematic diagram of the structure of the present utility model.

[0014] In the figure: 1. Bracket; 2. Spring; 3. Moving ring; 4. Elastic plate; 5. Fixed ring; 6. Discharge box; 7. Cylinder body. Specific Embodiments

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] Embodiment 1

[0017] Please refer toFigures 1-3 For the external return soda ash vapor calciner discharge sealing device in the illustration, it includes a discharge box 6. A cylinder body 7 is rotatably arranged in the discharge box 6, and a plurality of brackets 1 are fixedly installed on the outer side of the discharge box 6. Elastic plates 4 are fixedly installed at both ends of the discharge box 6, and one end of each elastic plate 4 is fixedly connected to one end of a fixed ring 5. One side of each bracket 1 close to the bracket 1 is fixedly connected with a spring 2, and the other end of each spring 2 is fixedly connected to one end of each fixed ring 5. Both ends of the cylinder body 7 are fixedly connected with moving rings 3 that are in contact with one end of the fixed ring 5.

[0018] In this embodiment, the plurality of brackets 1 are annularly distributed along both sides of the discharge box 6, and a discharge port is provided at the bottom of the discharge box 6.

[0019] Furthermore, through the elastic force of each spring 2 and the elastic plate 4, during the discharging process, the side of the fixed ring 5 fixedly connected to one end of each spring 2 close to the cylinder body 7 can be closely attached to the outer side of the moving ring 3 that rotates along with the fixed connection at one end of the cylinder body 7, thereby ensuring the sealing performance at the connection of the device.

[0020] The working principle of the present utility model: Through the elastic force of each spring 2 and the elastic plate 4, during the discharging process, the side of the fixed ring 5 fixedly connected to one end of each spring 2 close to the cylinder body 7 can be closely attached to the outer side of the moving ring 3 that rotates along with the fixed connection at one end of the cylinder body 7, thereby ensuring the sealing performance at the connection of the device.

[0021] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0022] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. Outer return alkali steam calciner discharge sealing device, including a discharge box (6), characterized in that: A cylinder body (7) is rotatably arranged in the discharge box (6), and a plurality of brackets (1) are fixedly installed on the outer side of the discharge box (6). Elastic plates (4) are fixedly installed at both ends of the discharge box (6), and one end of each elastic plate (4) is fixedly connected to one end of a fixed ring (5). One side of each bracket (1) close to the bracket (1) is fixedly connected to a spring (2), and the other end of each spring (2) is fixedly connected to one end of each fixed ring (5). Moving rings (3) that are attached to one end of the fixed ring (5) are fixedly connected to both ends of the cylinder body (7).

2. The external return caustic soda vapor calciner discharge sealing device according to claim 1, characterized in that: The plurality of brackets (1) are respectively annularly distributed along both sides of the discharge box (6).

3. The external return caustic soda vapor calciner discharge sealing device according to claim 2, characterized in that: A discharge port is arranged at the bottom end of the discharge box (6).

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