Rotary kiln door

Abstract

The utility model relates to the technical field of cement processing equipment, in particular to a rotary kiln door. According to the technical scheme, the device comprises a kiln door frame, a kiln door body, an annular pipe, a negative pressure pump and an embedding block, the kiln door body is arranged at the front end of the kiln door frame, the annular pipe is arranged at the upper end of the kiln door body, the embedding block is arranged on the side of the rear end of the kiln door body, an embedding groove is formed in the front end of the interior of the kiln door frame, and a sealing gasket is arranged on the inner wall of the embedding groove; a through opening communicated with the embedding groove is formed in the lower end of the sealing gasket, a negative pressure groove is formed in the kiln door frame, a negative pressure pump is arranged at the front end of the kiln door frame, and a pressure sensor is arranged in the extraction pipe. The negative pressure groove is formed in the embedded position of the kiln door body and the kiln door frame, suction force generated in the negative pressure groove plays a role in adsorbing the embedded block, the attaching firmness of the kiln door body and the kiln door frame is higher, if the negative pressure groove applies pressure, the sealing gasket is damaged, and a terminal is reminded in time through the pressure sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of cement processing equipment, in particular to a rotary kiln door. Background Technique

[0002] The rotary kiln is used for the firing and processing of cement, and the kiln door is a key part communicating with the outside world.

[0003] It is retrieved that the publication number CN212692527U provides a rotary kiln door, which includes a kiln door frame, a kiln door and a hinge device. The kiln door includes a left kiln door and a right kiln door that are opened oppositely. The left kiln door is connected to the kiln door frame through at least one of the hinge devices, and the right kiln door is connected to the kiln door frame through at least one of the hinge devices. The inner surface of the kiln door is provided with reinforcing ribs, the reinforcing ribs are distributed in a grid, and the shape of the grid is a rhombus. The utility model is provided with a hinge device, and the kiln door is hinged to the kiln door frame through the hinge device, changing from the original translation opening and closing mode of the guide rail to the outward axis rotation opening and closing. The hinge device is not easy to deform and is not affected by temperature to affect the flexibility of opening and closing, improving the sealing effect of the kiln door and making the kiln door open and close flexibly. At the same time, through the reinforcing ribs of the rhombus grid, the structural strength of the kiln door is strengthened to prevent the kiln door from deforming and the sealing effect is increased.

[0004] When using CN212692527U, it has significant advantages. It changes from the original translation opening and closing mode of the guide rail to the outward axis rotation opening and closing. The hinge device is not easy to deform and is not affected by temperature to affect the flexibility of opening and closing, improving the sealing effect of the kiln door. However, it does not have the function of leakage detection during use. Once leakage occurs, it will cause the internal pressure of the kiln body to drop, dust to leak to the outside, resulting in environmental pollution everywhere, and at the same time heat loss. If not dealt with in time, it is easy to cause long-term losses. For this reason, we propose a rotary kiln door to solve the existing problems. Content of the Utility Model

[0005] The purpose of the utility model is to propose a rotary kiln door aiming at the problems existing in the background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A rotary kiln door includes a kiln door frame, a kiln door body, an annular pipe, a negative pressure pump and a fitting block. Symmetrically distributed kiln door bodies are arranged at the front end of the kiln door frame. Hinges are arranged at equal distances on both sides of the front end of the kiln door frame. An annular pipe is arranged at the upper end of the kiln door body. A fitting block is arranged at the rear side edge of the kiln door body. A fitting groove is opened inside the front end of the kiln door frame. A sealing gasket is arranged on the inner wall of the fitting groove. A through port communicating with the fitting groove is opened inside the lower end of the sealing gasket. A negative pressure groove is opened inside the kiln door frame. A negative pressure pump is arranged at the front end of the kiln door frame. An extraction pipe is arranged at one end of the negative pressure pump. A pressure sensor is arranged inside the extraction pipe.

[0007] Preferably, one end of the hinge is rotatably installed on the kiln door body. The kiln door body is rotatably connected to the kiln door frame through the hinge.

[0008] Preferably, the annular pipe is located below the hinge. The annular pipe avoids interfering with the rotation stroke of the hinge.

[0009] Preferably, both the fitting groove and the fitting block have a trapezoidal cross-section. The sealing gasket on the inner wall of the fitting groove is squeezed on three sides by the fitting block, increasing the sealing contact area, and the sealing gasket has three squeezing surfaces.

[0010] Preferably, one end of the negative pressure groove penetrates through the through port and one end penetrates through the kiln door frame. The negative pressure inside the negative pressure groove is communicated with the fitting groove through the through port

[0011] Preferably, a connecting pipe is provided at the lower end of the annular pipe, and the lower end of the connecting pipe is communicated with the negative pressure groove. The connecting pipe connects the annular pipe and the negative pressure groove.

[0012] Preferably, a one-way valve is provided inside the extraction pipe, and one end of the extraction pipe penetrates through the annular pipe. The one-way valve ensures that the air flow inside the extraction pipe can only flow in one direction.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By arranging a connection channel at the position of the seal between the kiln door frame and the kiln door body, the connection channel is extracted by a negative pressure pump, and the inside is in a negative pressure state. The negative pressure acts on the connecting piece to improve the tightness of the fit between the kiln door body and the kiln door frame. When the seal is damaged and leaks, the pressure inside the negative pressure groove is lost, and the pressure sensor captures the signal in time to remind the staff to carry out maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of the present utility model;

[0016] Figure 2 is the bottom view sectional structural schematic diagram of the present utility model;

[0017] Figure 3 is the Figure 2 partial front sectional enlarged structural schematic diagram of the annular pipe in the present utility model;

[0018] Figure 4 is the Figure 1 top view structural schematic diagram of the extraction pipe in the present utility model.

[0019] Reference numerals: 1. Kiln door frame; 2. Hinge; 3. Kiln door body; 4. Annular pipe; 5. Negative pressure pump; 6. Connecting pipe; 7. Fitting block; 8. Sealing gasket; 9. Fitting groove; 10. Through port; 11. Pressure sensor; 12. One-way valve; 13. Extraction pipe; 14. Negative pressure groove. Detailed implementation manners

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying 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 of 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.

[0021] Embodiment 1

[0022] As Figures 1-4 shown, a rotary kiln door proposed by the present utility model includes a kiln door frame 1, a kiln door body 3, an annular pipe 4, a negative pressure pump 5 and a fitting block 7. Symmetrically distributed kiln door bodies 3 are arranged at the front end of the kiln door frame 1. Equally spaced hinges 2 are arranged on both sides at the front end of the kiln door frame 1. One end of the hinge 2 is rotatably installed with the kiln door body 3. An annular pipe 4 is arranged at the upper end of the kiln door body 3. The annular pipe 4 is located below the hinge 2. A fitting block 7 is arranged at the rear end side of the kiln door body 3. A fitting groove 9 is opened inside the front end of the kiln door frame 1. Both the fitting groove 9 and the fitting block 7 have a trapezoidal cross-section. A sealing gasket 8 is arranged on the inner wall of the fitting groove 9. A through port 10 communicating with the fitting groove 9 is opened inside the lower end of the sealing gasket 8. A negative pressure groove 14 is opened inside the kiln door frame 1. One end of the negative pressure groove 14 penetrates through the through port 10 and one end penetrates through the kiln door frame 1. A connecting pipe 6 is arranged at the lower end of the annular pipe 4. The lower end of the connecting pipe 6 is communicated with the negative pressure groove 14. A negative pressure pump 5 is arranged at the front end of the kiln door frame 1. A suction pipe 13 is arranged at one end of the negative pressure pump 5. A one-way valve 12 is arranged inside the suction pipe 13. A pressure sensor 11 is arranged inside the suction pipe 13. One end of the suction pipe 13 penetrates through the annular pipe 4.

[0023] Based on the implementation steps of Embodiment 1: After the kiln door body 3 is installed. The annular pipe 4 extracts the gas inside the negative pressure groove 14. After the air inside the negative pressure groove 14 is emptied, an adsorption force is generated on the fitting block 7, increasing the firmness of the fitting block 7. When the sealing gasket 8 is damaged, the negative pressure groove 14 is in a pressure loss state. The pressure is detected by the pressure sensor 11, and a warning is given to the on-duty personnel in time. Moreover, the sealing gasket 8 has three sides. Even if the lower end surface close to the kiln door frame 3 is damaged, one end still remains pressed by the fitting block 7, so that the sealing effect still exists. Therefore, when it is damaged without complete leakage, maintenance is carried out in time.

[0024] The above specific embodiments are only several preferred embodiments of the present utility model. Based on the technical solutions of the present utility model and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0025] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A rotary kiln door, comprising a kiln door frame (1), a kiln door body (3), an annular pipe (4), a negative pressure pump (5) and a fitting block (7), characterized in that: The front end of the kiln door frame (1) is provided with a symmetrically distributed kiln door body (3), both sides of the front end of the kiln door frame (1) are provided with equidistantly distributed hinges (2), the upper end of the kiln door body (3) is provided with an annular tube (4), the rear end side of the kiln door body (3) is provided with a fitting block (7), the front end of the kiln door frame (1) is provided with a fitting groove (9), the inner wall of the fitting groove (9) is provided with a sealing gasket (8), the lower end of the sealing gasket (8) is provided with a through opening (10) that is mutually interpenetrating with the fitting groove (9), the kiln door frame (1) is provided with a negative pressure groove (14), the front end of the kiln door frame (1) is provided with a negative pressure pump (5), one end of the negative pressure pump (5) is provided with an extraction pipe (13), and a pressure sensor (11) is provided inside the extraction pipe (13).

2. A rotary kiln door according to claim 1, characterized in that: One end of the hinge (2) is rotatably mounted on the kiln door body (3).

3. The rotary kiln door according to claim 1, characterized in that: The annular tube (4) is located below the hinge (2).

4. The rotary kiln door according to claim 1, characterized in that: The engaging groove (9) and the engaging block (7) both have a trapezoidal cross section.

5. The rotary kiln door according to claim 1, characterized in that: One end of the negative pressure groove (14) passes through the through opening (10), and the other end passes through the kiln door frame (1).

6. The rotary kiln door according to claim 1, characterized in that: A connecting pipe (6) is provided at the lower end of the annular pipe (4), and the lower end of the connecting pipe (6) is in communication with the negative pressure tank (14).

7. The rotary kiln door according to claim 1, characterized in that: A one-way valve (12) is arranged inside the extraction pipe (13), and one end of the extraction pipe (13) passes through the annular pipe (4).

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