Feeding sealing device of cement grinding mill

Abstract

The utility model relates to a feeding sealing device of a cement grinding mill. The feeding sealing device comprises an annular shell and an adapting pipe, the materials are conveyed into the hopper, the annular shell continues to rotate, and when the hopper containing the materials rotates to the top, the materials penetrate through the leakage holes to fall into the adapting pipe, the materials enter the cement mill from the obliquely-arranged adapting pipe, and then feeding of the cement mill is completed; compared with an original feeding device of a cement grinding mill in the prior art which adopts a simple felt sealing mode, the novel feeding device has the following advantages that the inner diameter and the outer diameter which are accurately matched can provide a better sealing effect, leakage of materials at the joint of the rotary kiln and the cement grinding mill is reduced, and the service life of the rotary kiln is prolonged. Therefore, the problem that materials are continuously spit from the grinding head when the circulating load in the mill is large is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cement production, in particular to a cement mill feed sealing device. Background Art

[0002] In the cement production process, the raw materials are pre-treated and then sent to the rotary kiln for high-temperature calcination. The main function of the rotary kiln is to burn the cement raw materials into clinker, which is a chemical change process that converts the raw materials into clinker. Among them, the cement mill is located downstream of the rotary kiln. Its function is to grind the cooled clinker, add auxiliary materials such as gypsum, and finally grind it into cement. Among them, in the prior art, the original feeding device of the cement mill adopts a simple felt seal, and the connection between the rotary kiln and the cement mill has poor sealing, which directly leads to continuous discharge of materials from the grinding head when the circulating load in the mill is large. At the same time, the environmental pollution is serious, and the surrounding gas stations and the ground hygiene are difficult to maintain after repeated cleaning. Utility Model Content

[0003] The main purpose of the utility model is to provide a cement mill feed sealing device to solve the problem of poor sealing performance of the connection between the rotary kiln and the cement mill in the prior art cement mill feed device.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a cement mill feed sealing device, comprising an annular shell and a receiving tube;

[0005] The side wall of the annular shell is coaxially connected to the discharge port of the inclined rotary kiln, the inner wall of the annular shell is an open structure, and a plurality of partition plates are fixedly arranged on the inner circumference of the annular shell, and the plurality of partition plates divide the annular shell into a plurality of hoppers;

[0006] One end of the receiving pipe is connected to the feed port of the cement mill, and the other end is coaxially inserted in the annular shell, and a plurality of leakage holes are provided on the top of the receiving pipe;

[0007] The inner diameter of the annular shell is consistent with the outer diameter of the receiving tube.

[0008] A preferred solution is that the cement mill feed sealing device further comprises a plurality of connecting members, and the plurality of connecting members are circumferentially arranged on the periphery of the annular housing;

[0009] The connecting piece comprises a connecting plate, annular plates are respectively fixedly arranged at both ends of the connecting plate, and each annular plate is fixedly arranged on the rotary kiln or the annular shell by bolts.

[0010] A preferred solution is that a flange is coaxially arranged at one end of the receiving pipe away from the annular shell, and the flange is fixed to the feed port of the cement mill by bolts.

[0011] A preferred solution is that the cement mill feed sealing device further comprises a flexible sleeve, the outer ring of the flexible sleeve is fixedly arranged on the annular shell, and the two are coaxially arranged, and the inner ring of the flexible sleeve abuts against the outer ring wall of the receiving tube.

[0012] A preferred solution is that the flexible sleeve is made of rubber material.

[0013] A preferred solution is that a accommodating tube is coaxially fixedly disposed on one side wall of the annular shell, and the accommodating tube, one side wall of the annular shell and the outer wall of the receiving tube form an accommodating space, in which the flexible rope is wound and filled.

[0014] The beneficial effects of the above scheme are:

[0015] First, the side wall of the annular shell is coaxially fixedly connected with the discharge port of the inclined rotary kiln, and secondly, the receiving tube is connected with the feed port of the cement mill, and the receiving tube is coaxially inserted in the annular shell, wherein the inclined rotary kiln drives the annular shell to rotate, and the material is transferred to the hopper, and the annular shell continues to rotate. When the hopper with the material rotates to the top, the material passes through the leak hole and falls to the receiving tube, and the material enters the cement mill from the inclined receiving tube, and then the feeding of the cement mill is completed. The inner diameter of the annular shell is set consistent with the outer diameter of the receiving tube, which greatly improves the continuous discharge of the grinding head. Compared with the simple felt sealing method used in the cement mill original feeding device of the prior art, this new type has the following advantages: the precisely matched inner diameter and outer diameter can provide better sealing effect, reduce the leakage of materials at the connection between the rotary kiln and the cement mill, and thus reduce the problem of continuous discharge of materials from the grinding head when the circulating load in the mill is large. In addition, the traditional felt seal may need to be replaced frequently due to wear and aging, while the design of mechanical seal can reduce the frequency and cost of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the explosion state structure of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the first embodiment of the utility model;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the second embodiment of the utility model.

[0020] Description of Reference Numerals

[0021] 1. Annular shell; 10. Open structure;

[0022] 2. Separator; 20. Hopper;

[0023] 3. Receiver pipe; 30. Leak hole; 31. Flange;

[0024] 4. Connecting piece; 40. Connecting plate; 41. Ring plate;

[0025] 5. Flexible sleeve;

[0026] 6. Accommodating tube; 61. Accommodating space; 62. Flexible rope. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0028] First embodiment:

[0029] like Figure 1 , Figure 2 As shown, this embodiment provides a cement mill feed sealing device, including an annular shell 1 and a receiving tube 3. The side wall of the annular shell 1 is coaxially connected to the discharge port of the inclined rotary kiln (not shown), the inner wall of the annular shell 1 is an open structure 10, and a plurality of partition plates 2 are fixedly arranged on the inner circumference of the annular shell 1, and the plurality of partition plates 2 divide the annular shell 1 into a plurality of hoppers 20. One end of the receiving tube 3 is connected to the feed port of the cement mill (not shown), and the other end of the receiving tube 3 is coaxially inserted in the annular shell 1, and a plurality of leakage holes 30 are provided on the top of the receiving tube 3. Among them, the inner diameter of the annular shell 1 is consistent with the outer diameter of the receiving tube 3.

[0030] First, the side wall of the annular shell 1 is coaxially fixedly connected with the discharge port of the inclined rotary kiln, and secondly, the receiving tube 3 is connected with the feed port of the cement mill, and the receiving tube 3 is coaxially inserted in the annular shell 1, wherein the inclined rotary kiln drives the annular shell 1 to rotate, and the material is conveyed to the hopper 20, and the annular shell 1 continues to rotate. When the hopper 20 with the material rotates to the top, the material passes through the leak hole 30 and falls to the receiving tube 3, and the material enters the cement mill from the inclined receiving tube 3, and then, the feeding of the cement mill is completed. The inner diameter of the annular shell 1 is set to be consistent with the outer diameter of the receiving tube 3, which greatly improves the continuous discharging of the grinding head. Compared with the simple felt sealing method used in the original feeding device of the cement mill in the prior art, this new type has the following advantages: the precisely matched inner diameter and outer diameter can provide better sealing effect, reduce the leakage of materials at the connection between the rotary kiln and the cement mill, thereby reducing the problem of continuous discharging of materials from the grinding head when the circulating load in the mill is large. In addition, traditional felt seals may need to be replaced frequently due to wear and aging, while the design of mechanical seals can reduce the frequency and cost of maintenance.

[0031] The cement mill feed sealing device also includes a plurality of connectors 4, which are arranged circumferentially on the periphery of the annular shell 1. The connector 4 includes a connecting plate 40, and annular plates 41 are fixedly arranged at both ends of the connecting plate 40, and each annular plate 41 is fixedly arranged on the rotary kiln or the annular shell 1 by bolts. A flange 31 is coaxially arranged at one end of the receiving tube 3 away from the annular shell 1, and the flange 31 is fixedly arranged at the feed port of the cement mill by bolts. The cement mill feed sealing device also includes a flexible sleeve 5, the outer ring of the flexible sleeve 5 is fixedly arranged on the annular shell 1, and the two are coaxially arranged, and the inner ring of the flexible sleeve 5 is in abutment with the outer ring wall of the receiving tube 3. Among them, the inner ring of the flexible sleeve 5 is in abutment with the outer ring wall of the receiving tube 3, which can effectively prevent the grinding head from continuously spitting out materials. The flexible sleeve 5 is made of rubber material.

[0032] Second embodiment:

[0033] like Figure 3 As shown, a accommodating tube 6 is coaxially fixedly disposed on one side wall of the annular shell 1 , and the accommodating tube 6 , one side wall of the annular shell 1 and the outer wall of the receiving tube 3 form an accommodating space 61 , in which a flexible rope 62 is coiled and filled.

[0034] The flexible rope 62 coiled and filled in the accommodating space 61 can effectively prevent the grinding head from continuously spitting out materials. In addition, when the flexible rope 62 is severely worn, the arrangement of the accommodating space 61 makes it easier to replace the flexible rope 62 structure.

[0035] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A cement mill feed sealing device, It is characterized in that include: An annular shell, the side wall of which is coaxially connected to the discharge port of the rotary kiln which is inclined, the inner wall of which is an open structure, and a plurality of partition plates are fixedly arranged on the inner circumference of the annular shell, and the plurality of partition plates divide the annular shell into a plurality of hoppers; A receiving pipe, one end of which is connected to the feed port of the cement mill, and the other end of which is coaxially inserted in the annular shell, and a plurality of leakage holes are provided on the top of the receiving pipe; Wherein, the inner diameter of the annular shell is consistent with the outer diameter of the receiving tube.

2. The cement mill feed sealing device according to claim 1, It is characterized in that It also includes a plurality of connecting members, wherein the plurality of connecting members are circumferentially arranged on the periphery of the annular shell; The connecting member comprises a connecting plate, annular plates are respectively fixedly arranged at both ends of the connecting plate, and each of the annular plates is fixedly arranged on the rotary kiln or the annular shell by bolts.

3. The cement mill feed sealing device according to claim 1, It is characterized in that A flange is coaxially arranged at one end of the receiving pipe away from the annular shell, and the flange is fixed to the feed port of the cement mill by bolts.

4. The cement mill feed sealing device according to any one of claims 1 to 3, It is characterized in that It also includes a flexible sleeve, the outer ring of which is fixedly arranged on the annular shell, and the two are coaxially arranged, and the inner ring of the flexible sleeve abuts against the outer ring wall of the receiving tube.

5. The cement mill feed sealing device according to claim 4, It is characterized in that The flexible sleeve is made of rubber material.

6. The cement mill feed sealing device according to any one of claims 1 to 3, It is characterized in that A accommodating tube is coaxially fixedly arranged on one side wall of the annular shell. The accommodating tube, one side wall of the annular shell and the outer wall of the receiving tube form an accommodating space, and a flexible rope is coiled and filled in the accommodating space.

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