Coal injection device of decomposing furnace

Abstract

The utility model relates to the technical field of cement production, in particular to a coal injection device of a decomposing furnace. According to the technical scheme, the device comprises a rotary kiln coal mill coal injection machine, a vibration motor and a vibration spring, a discharging hopper is installed on one side of the upper surface of the rotary kiln coal mill coal injection machine, a discharging groove is formed in the upper surface of the discharging hopper, a cylinder is placed on the upper surface of the discharging hopper, and a through hole is formed in the upper surface of the cylinder; a first disc is fixed to the lower end of the inner wall of the through hole, a vibrating spring is fixed to the upper surface of the first disc, a second disc is fixed to the top end of the vibrating spring, vibrating motors are installed on the two sides of the lower surface of the second disc respectively, a first round hole is formed in the upper surface of the second disc, and a filter screen is fixed to the inner wall of the first round hole. The pulverized coal screening device has the advantages that pulverized coal can be screened, and the situation that a coal injection pipeline is blocked due to the fact that coal briquettes are contained in the pulverized coal is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cement production, in particular to a coal injection device for a decomposition furnace. Background Art

[0002] Cement decomposition furnace is an important equipment used in cement production. It is a large rotary kiln, which is mainly used to decompose and calcine raw materials at high temperature to produce cement clinker. In the cement decomposition furnace, the raw material mixture (usually including limestone and clay) is fed into the decomposition furnace and decomposed through the calcination process under high temperature environment to turn it into granular cement clinker. When the decomposition furnace is in use, it is necessary to use a coal injection device to spray coal powder into the decomposition furnace, but when the coal powder is introduced into the coal injection device, the coal powder contains coal lumps, which can easily cause the coal injection pipeline to be blocked.

[0003] A Chinese patent discloses a coal injection device for a cement rotary kiln decomposition furnace (authorization announcement number CN217818088U). The patented technology mainly includes a decomposition furnace body, a bearing, a fixing frame, a feed pipe, a connecting pipe and a support frame. The fixing frames are symmetrically installed on the outer wall of one side of the decomposition furnace body, a feed pipe is arranged between the fixing frames, screws are installed on the upper and lower outer walls of the feed pipe, bearings are embedded and installed on the outer wall of one side of the decomposition furnace body and one side of the inner wall of the feed pipe, a connecting pipe is rotatably installed inside the bearing, a support frame is installed on one side of the inner wall of the connecting pipe, and a rotating shaft is installed on the outer wall of one side of the support frame.

[0004] However, there are still some shortcomings in this patent. This patent achieves the effect of improving the dispersion range of coal powder by setting a feed pipe, a connecting pipe and an impeller, expands the dispersion range of coal powder, and improves the mixing degree of coal powder and hot air inside the decomposition furnace; however, when the coal powder is introduced into the coal injection device, the coal powder contains coal lumps, which easily causes the coal injection pipeline to be blocked. Therefore, those skilled in the art provide a coal injection device for a decomposition furnace to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to provide a coal injection device for a decomposition furnace, which has the advantages of being able to screen coal powder and prevent the coal powder from containing coal lumps and causing the coal injection pipeline to be blocked, thereby solving the problem that when coal powder is introduced into the coal injection device, the coal powder containing coal lumps easily causes the coal injection pipeline to be blocked.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a decomposition furnace coal injection device, comprising a rotary kiln coal mill coal injection machine, a vibration motor and a vibration spring, a lower hopper is installed on one side of the upper surface of the rotary kiln coal mill coal injection machine, a lower hopper is provided on the upper surface of the lower hopper, a cylinder is placed on the upper surface of the lower hopper, a through hole is provided on the upper surface of the cylinder, a disc 1 is fixed to the lower end of the inner wall of the through hole, a vibration spring is fixed on the upper surface of the disc 1, a disc 2 is fixed on the top of the vibration spring, vibration motors are respectively installed on both sides of the lower surface of the disc 2, a circular hole 1 is provided on the upper surface of the disc 2, and a filter is fixed on the inner wall of the circular hole 1.

[0007] Preferably, bases are fixed on both sides of the lower surface of the rotary kiln coal mill and coal injection machine, and a semicircular groove is opened on the upper surface of the base, and the lower surface of the rotary kiln coal mill and coal injection machine extends into the semicircular groove and is fixed. The semicircular groove facilitates the rotary kiln coal mill and coal injection machine to extend and be fixed, so that the base can support the rotary kiln coal mill and coal injection machine.

[0008] Preferably, a control switch box is fixed to one side of the front end of the rotary kiln coal mill coal injection machine, and a display screen and buttons are sequentially embedded and installed on the front end of the control switch box from top to bottom. The start and stop of the vibration motor can be controlled by the control switch box.

[0009] Preferably, a threaded ring groove is formed on the upper surface of the lower hopper, a threaded ring is fixed on the lower surface of the cylinder, the threaded ring extends into the threaded ring groove and is threadedly connected. The threaded ring extends into the threaded ring groove for threaded connection, which facilitates the installation and disassembly of the cylinder.

[0010] Preferably, six vibration springs in a ring array are fixed on the upper surface of the first disk, and the second disk can be supported by the six vibration springs, so that the second disk is supported stably.

[0011] Preferably, the upper surface of the disc 1 is provided with a circular hole 2, through which the sieved coal powder can fall into the feeding chute.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model has a cylinder placed on the upper surface of a lower hopper, a through hole is opened on the upper surface of the cylinder, a disc one is fixed on the lower end of the inner wall of the through hole, a vibration spring is fixed on the upper surface of the disc one, a disc two is fixed on the top of the vibration spring, vibration motors are respectively installed on both sides of the lower surface of the disc two, a circular hole one is opened on the upper surface of the disc two, a filter screen is fixed on the inner wall of the circular hole one, when coal powder needs to be sprayed into the cement decomposition furnace, the coal powder is poured into the through hole, the vibration motor is started, the vibration spring is elastically deformed, the disc two and the filter screen vibrate, the filter screen can screen the coal powder, the screened coal powder falls into the lower chute, and then enters the rotary kiln coal mill coal injection machine, so as to achieve the effect of screening the coal powder and preventing the coal powder from containing coal lumps and causing the coal injection pipeline to be blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of the base of the utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of the rotary kiln coal mill coal injection machine of the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the cylinder of the utility model.

[0018] In the figure: 1. base; 2. rotary kiln coal mill coal injection machine; 3. cylinder; 4. discharge hopper; 5. control switch box; 6. semicircular groove; 7. discharge chute; 8. threaded ring groove; 9. threaded ring; 10. disc one; 11. vibration motor; 12. disc two; 13. through hole; 14. circular hole one; 15. filter screen; 16. vibration spring; 17. circular hole two. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] See also Figures 1 to 4The utility model provides an embodiment: a decomposition furnace coal injection device, comprising a rotary kiln coal mill coal injection machine 2, a vibration motor 11 and a vibration spring 16, a lower hopper 4 is installed on one side of the upper surface of the rotary kiln coal mill coal injection machine 2, and bases 1 are fixed on both sides of the lower surface of the rotary kiln coal mill coal injection machine 2, and a semicircular groove 6 is opened on the upper surface of the base 1. The lower surface of the rotary kiln coal mill coal injection machine 2 extends into the semicircular groove 6 and is fixed, and a control switch box 5 is fixed on one side of the front end of the rotary kiln coal mill coal injection machine 2. A display screen and buttons are sequentially embedded and installed on the front end of the control switch box 5 from top to bottom, and the semicircular groove 6 is convenient for the rotary kiln coal mill coal injection machine 2 to extend into and be fixed, so that the base 1 can support the rotary kiln coal mill coal injection machine 2, and the vibration motor 11 can be controlled to start and stop by the control switch box 5.

[0021] A lower hopper 4 has a lower chute 7 on its upper surface, a cylinder 3 is placed on its upper surface, a threaded ring groove 8 is on its upper surface, a threaded ring 9 is fixed to the lower surface of the cylinder 3, the threaded ring 9 extends into the threaded ring groove 8 and is threadedly connected, and the threaded ring 9 extends into the threaded ring groove 8 for threaded connection, which facilitates the installation and disassembly of the cylinder 3.

[0022] A through hole 13 is provided on the upper surface of the cylinder 3, and a disc 10 is fixed at the lower end of the inner wall of the through hole 13. A circular hole 2 17 is provided on the upper surface of the disc 10, and the screened coal powder falls into the discharge chute 7 through the circular hole 2 17. A vibration spring 16 is fixed on the upper surface of the disc 10. Six vibration springs 16 in a ring array are fixed on the upper surface of the disc 10. The six vibration springs 16 can support the disc 2 12, so that the disc 2 12 is supported stably. The disc 2 12 is fixed on the top of the vibration spring 16. Vibration motors 11 are respectively installed on both sides of the lower surface of the disc 2 12. The vibration motor 11 provides power for the elastic deformation of the vibration spring 16, so that the disc 2 12 and the filter screen 15 can vibrate as needed. The filter screen 15 can screen out coal blocks in the coal powder to prevent the coal mine from clogging the coal injection pipeline. A circular hole 14 is provided on the upper surface of the disc 2 12, and the filter screen 15 is fixed on the inner wall of the circular hole 14.

[0023] When it is necessary to spray the coal powder into the cement decomposition furnace, the threaded ring 9 is inserted into the threaded ring groove 8 and threadedly connected, and then the coal powder is poured into the through hole 13, and the control switch box 5 is operated to start the vibration motor 11, so that the vibration spring 16 is elastically deformed, and the disc 12 and the filter screen 15 vibrate at the same time, and the filter screen 15 can screen the coal powder, and the screened coal powder falls into the feeding chute 7 and then enters the rotary kiln coal mill coal injection machine 2. The effect of screening the coal powder and preventing the coal powder from containing coal lumps and causing the coal injection pipeline to be blocked is achieved.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A coal injection device for a calciner, comprising a rotary kiln coal mill coal injection machine (2), a vibration motor (11) and a vibration spring (16), characterized in that: A lower hopper (4) is installed on one side of the upper surface of the rotary kiln coal mill coal injection machine (2), a lower hopper (4) is provided on the upper surface of the lower hopper (4), a cylinder (3) is placed on the upper surface of the lower hopper (4), a through hole (13) is provided on the upper surface of the cylinder (3), a disc one (10) is fixed at the lower end of the inner wall of the through hole (13), a vibration spring (16) is fixed on the upper surface of the disc one (10), a disc two (12) is fixed at the top end of the vibration spring (16), vibration motors (11) are respectively installed on both sides of the lower surface of the disc two (12), a circular hole one (14) is provided on the upper surface of the disc two (12), a filter screen (15) is fixed on the inner wall of the circular hole one (14).

2. A coal injection device for a calciner according to claim 1, characterized in that: Bases (1) are fixed on both sides of the lower surface of the rotary kiln coal mill coal injection machine (2), and a semicircular groove (6) is opened on the upper surface of the base (1). The lower surface of the rotary kiln coal mill coal injection machine (2) extends into the semicircular groove (6) and is fixed.

3. A coal injection device for a calciner according to claim 1, characterized in that: A control switch box (5) is fixed to one side of the front end of the rotary kiln coal mill coal injection machine (2), and a display screen and buttons are sequentially embedded and installed at the front end of the control switch box (5) from top to bottom.

4. A coal injection device for a calciner according to claim 1, characterized in that: The upper surface of the lower hopper (4) is provided with a threaded ring groove (8), and the lower surface of the cylinder (3) is fixed with a threaded ring (9), which extends into the threaded ring groove (8) and is threadedly connected.

5. A coal injection device for a calciner according to claim 1, characterized in that: Six vibration springs (16) in a circular array are fixed on the upper surface of the disc 1 (10).

6. A coal injection device for a calciner according to claim 1, characterized in that: The upper surface of the disc one (10) is provided with a circular hole two (17).

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