Novel coal injection pressure relief auxiliary device

Abstract

The utility model discloses a novel coal injection pressure relief auxiliary device, and relates to the technical field of pressure relief devices, the novel coal injection pressure relief auxiliary device comprises an injection tank body, the left end of the outer side wall of the injection tank body is fixed and connected with a square pipe in a penetrating manner, the right end of the inner side wall of the square pipe is fixed with a filter plate, and the outer top surface of the square pipe is provided with a cleaning assembly for preventing the filter plate from being blocked. A pressure relief assembly is arranged at the left end of the outer bottom face of the square pipe. Through mutual cooperation of the first driving motor, the lead screw, the cylinder and the square plate, the wedge-shaped block can be driven to move up and down in the square sleeve, then the opening degree is adjusted and controlled according to the pressure, meanwhile, the situation that the pressure relief pressure cannot be adjusted due to elasticity failure caused by long-time use of a spring can be avoided, and the service life of the valve is prolonged. Therefore, the practicability is improved.

Description

A novel pulverized coal injection pressure relief auxiliary device Technical Field

[0001] This utility model relates to the field of pressure relief device technology, and in particular to a novel auxiliary device for pulverized coal pressure relief. Background Technology

[0002] Pulverized coal injection is a reasonable choice for the advancement of blast furnace technology. Moreover, the organic combination of high blast temperature, oxygen-enriched blast, and pulverized coal injection can not only benefit both coke saving and production increase, but also become an indispensable means of adjusting the lower part of the blast furnace. A complete blast furnace pulverized coal injection process should include a raw coal storage and transportation system, a pulverizing system, a pulverized coal conveying system, an injection system, a gas supply system, and a pulverized coal metering system. The latest blast furnace pulverized coal injection system also includes a computer control center for the entire pulverized coal injection system. During the pulverized coal injection process, the pressure generated is relatively large, and pressure relief is required to avoid excessive pressure causing explosions and other damage.

[0003] For example, a Chinese patent discloses a pressure relief device for a blast furnace pulverized coal injection system (publication number CN217973265U). By setting up a pressure relief device, the pressure of the injection tank is reduced. However, during use, it does not have the functions of self-cleaning or protecting the pressure relief device.

[0004] However, the aforementioned publicly available documents describe a system where the injection tank is connected to a square tube, and the square tube serves a pressure-relieving function, ensuring pressure conservation within the injection tank, preventing damage to the tank, and avoiding potential hazards. However, in practice, this patented system suffers from drawbacks. Over time, the springs are prone to metal fatigue, leading to elastic failure and an inability to adjust the pressure relief. Furthermore, the lack of cleaning of the filter plate causes it to become clogged, further hindering the pressure relief effect. Therefore, those skilled in the art have proposed a novel auxiliary device for pulverized coal injection pressure relief to address the problems described in the background section. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a novel auxiliary device for pulverized coal injection pressure relief, which solves the problems mentioned in the background art, such as the springs being prone to metal fatigue after prolonged use, leading to elastic failure and inability to adjust the pressure relief, and the filter plates being prone to clogging due to lack of cleaning, which easily affects the pressure relief effect.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel coal injection pressure relief auxiliary device, comprising a coal injection tank body, a square tube fixed and connected to the left end of the outer side wall of the coal injection tank body, a filter plate fixed to the right end of the inner side wall of the square tube, a cleaning component for preventing the filter plate from clogging is provided on the outer top surface of the square tube, and a pressure relief component is provided on the left end of the outer bottom surface of the square tube.

[0007] The pressure relief assembly includes a square sleeve fixedly and through-connected to the left end of the outer bottom surface of a square tube. A wedge-shaped block is slidably inserted inside the square sleeve. The top end of the wedge-shaped block extends into the interior of the square tube and abuts against its inner top surface, while the bottom end extends to the outer bottom surface of the square sleeve and is fixedly attached to a square plate. A connecting plate is fixedly installed on the right end of the outer wall of the square sleeve. A drive motor is fixedly installed on the outer top surface of the connecting plate. A lead screw is rotatably installed on the outer bottom surface of the connecting plate. A cylinder is threaded onto the external part of the lead screw. The outer bottom surface of the cylinder is fixedly connected to the square plate. One end of the lead screw extends to the outer top surface of the connecting plate and is fixedly connected to the output end of the drive motor.

[0008] As a further technical solution of this utility model, the cleaning component includes a protective cover fixedly installed at the center of the outer wall on the left side of the filter plate. A rotating shaft is rotatably installed on the inner top surface of the protective cover. A bevel gear is fixedly installed at one end of the rotating shaft, while the other end passes through the protective cover and extends to the outer top surface of the square tube. A drive motor is fixedly installed on the outer top surface of the square tube at one point on the rotating shaft. The output end of the drive motor is fixedly connected to the rotating shaft.

[0009] As a further technical solution of this utility model, a rotating shaft is rotatably installed at the center of the outer wall on the right side of the filter plate. A brush is fixedly installed at one end of the rotating shaft, while the other end extends into the interior of the protective cover and is fixed with a bevel gear. The bevel gear and the bevel gear mesh with each other.

[0010] As a further technical solution of this utility model, a connecting block is fixed inside the square tube and at the top of the left outer wall of the wedge-shaped block, a round sleeve is fixedly installed on the outer bottom surface of the connecting block, and an electric push rod is fixedly installed on the left outer wall of the square sleeve.

[0011] As a further technical solution of this utility model, the output end of the electric push rod extends into the interior of the square tube and is fixed with a circular plate, which is inserted into the inner side of the circular sleeve.

[0012] As a further technical solution of this utility model, the top of the right outer wall of the wedge block is designed with an inclination.

[0013] This utility model provides a novel auxiliary device for pulverized coal injection pressure relief, which has the following advantages compared with the prior art:

[0014] Beneficial effects:

[0015] 1. This design is a novel auxiliary device for pulverized coal injection pressure relief. Through the cooperation of a drive motor, a lead screw, a cylinder, and a square plate, a wedge block can be driven to move up and down inside the square sleeve. The opening size can be adjusted according to the pressure. At the same time, it can also avoid the situation where the spring loses its elasticity due to long-term use and cannot adjust the pressure relief, thus improving its practicality.

[0016] 2. This design presents a novel coal injection pressure relief auxiliary device. Through the interaction of the drive motor 2, rotating shaft 1, rotating shaft 2, bevel gear 1, and bevel gear 2, it can drive the brush to clean the filter plate, thereby preventing the filter plate from becoming clogged and further improving its practicality. Attached Figure Description

[0017] Figure 1 is a first three-dimensional structural schematic diagram of a novel pulverized coal injection pressure relief auxiliary device;

[0018] Figure 2 is a schematic diagram of the second three-dimensional structure of a novel pulverized coal injection pressure relief auxiliary device;

[0019] Figure 3 is a cross-sectional three-dimensional structural schematic diagram of a novel pulverized coal injection pressure relief auxiliary device;

[0020] Figure 4 is a magnified schematic diagram of the local structure at point A in Figure 3;

[0021] Figure 5 is a magnified schematic diagram of the local structure at point B in Figure 3.

[0022] In the picture:

[0023] 1. Pulse jet tank body; 101. Square tube; 102. Filter plate;

[0024] 2. Cleaning components; 201. Protective cover; 202. Rotating shaft one; 203. Bevel gear one; 204. Drive motor two; 205. Rotating shaft two; 206. Brush; 207. Bevel gear two;

[0025] 3. Pressure relief assembly; 301. Square sleeve; 302. Wedge block; 303. Square plate; 304. Connecting plate; 305. Drive motor one; 306. Lead screw; 307. Cylinder;

[0026] 4. Connecting block; 401. Circular sleeve; 402. Electric push rod; 403. Circular plate. Detailed Implementation

[0027] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] Please refer to Figures 1-5. This utility model provides a novel technical solution for a coal injection pressure relief auxiliary device: it includes a pulverized coal injection tank 1, a square tube 101 fixed and connected to the left end of the outer wall of the pulverized coal injection tank 1, a filter plate 102 fixed to the right end of the inner wall of the square tube 101, and a cleaning component 2 for preventing the filter plate 102 from clogging is provided on the outer top surface of the square tube 101. The cleaning component 2 includes a protective cover 201 fixedly installed at the center of the left outer wall of the filter plate 102. A rotating shaft 202 is rotatably installed on the inner top surface of the protective cover 201. A bevel gear 203 is fixedly installed at one end of the rotating shaft 202, and the other end passes through the protective cover 201 and extends to the outer top surface of the square tube 101. A drive motor 204 is fixedly installed on the outer top surface of the square tube 101 at the rotating shaft 202. The output end is fixedly connected to the rotating shaft 202. A rotating shaft 205 is rotatably installed at the center of the outer right side of the filter plate 102. A brush 206 is fixedly installed at one end of the rotating shaft 205, while the other end extends into the interior of the protective cover 201 and is fixed with a bevel gear 207. The bevel gear 203 and the bevel gear 207 are meshed with each other. In use, the drive motor 204 is controlled and started to drive the rotating shaft 202 to drive the bevel gear 203 to rotate inside the protective cover 201. Under the meshing transmission characteristics of the bevel gear 203, the bevel gear 207 is driven to drive the rotating shaft 205 to rotate, thereby driving the brush 206 to clean the filter plate 102, thus preventing the filter plate 102 from becoming clogged and avoiding affecting the pressure relief effect, thereby further improving its practicality.

[0029] A pressure relief assembly 3 is provided at the left end of the outer bottom surface of the square tube 101. The pressure relief assembly 3 includes a square sleeve 301 fixedly and throughly connected to the left end of the outer bottom surface of the square tube 101. A wedge block 302 is slidably inserted inside the square sleeve 301. A connecting block 4 is fixedly installed inside the square tube 101 and at the top of the left outer wall of the wedge block 302. A round sleeve 401 is fixedly installed on the outer bottom surface of the connecting block 4. An electric push rod 402 is fixedly installed on the left outer wall of the square sleeve 301. The output end of the electric push rod 402 extends into the interior of the square tube 101 and is fixedly... A circular plate 403 is fixed inside the circular sleeve 401. When pressure relief is required, the electric push rod 402 is first controlled and activated to extend and retract, allowing the circular plate 403 to be removed from the inside of the circular sleeve 401, thereby releasing the limiting effect on the wedge block 302. The top end of the wedge block 302 extends into the inside of the square tube 101 and abuts against its inner top surface, while the bottom end extends to the outer bottom surface of the square sleeve 301 and is fixed with the square plate 303. A connecting plate 304 is fixedly installed on the right end of the outer side wall of the square sleeve 301. A drive motor 305 is fixedly mounted on the top surface. A lead screw 306 is rotatably mounted on the outer bottom surface of the connecting plate 304. A cylinder 307 is threaded onto the outer surface of the lead screw 306. The outer bottom surface of the cylinder 307 is fixedly connected to the square plate 303. One end of the lead screw 306 extends to the outer top surface of the connecting plate 304 and is fixedly connected to the output end of the drive motor 305. The top of the right outer wall of the wedge block 302 is designed with an inclination. When the restriction on the wedge block 302 is released, the drive motor 305 is controlled and started to drive the lead screw 306 to rotate. Under the characteristics of threaded connection, the cylinder 307 drives the square plate 303 to move downward, thereby driving the wedge block 302 to move downward synchronously inside the square sleeve 301, allowing the pressure to be released along the gap between the wedge block 302 and the square tube 101 (at the same time, a pressure detection device is set on the outside of the square tube 101 to monitor the pressure in real time). The opening size of the wedge block 302 is adjusted according to the pressure, thereby avoiding the situation where the spring loses its elasticity due to long-term use and cannot adjust the pressure relief, thus improving practicality.

[0030] The working principle of this utility model is as follows: when pressure relief is required, the electric push rod 402 is first activated to extend and retract, so that the circular plate 403 is removed from the inside of the circular sleeve 401, thereby releasing the limiting effect on the wedge block 302.

[0031] At the same time, the drive motor 305 is started to drive the lead screw 306 to rotate, thereby driving the cylinder 307 to move the square plate 303 downward, thereby driving the wedge block 302 to move downward synchronously inside the square sleeve 301, allowing the pressure to be released along the gap between the wedge block 302 and the square tube 101.

[0032] At the same time, the drive motor 204 is started to drive the rotating shaft 202 to drive the bevel gear 203 to rotate inside the protective cover 201, thereby driving the bevel gear 207 to drive the rotating shaft 205 to rotate, and driving the brush 206 to clean the filter plate 102.

[0033] It should be noted that all electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art, so the control method and circuit connection will not be explained in detail.

[0034] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A novel auxiliary device for pulverized coal injection pressure relief, characterized in that, The device includes a spray tank (1), a square tube (101) fixed and connected to the left end of the outer wall of the spray tank (1), a filter plate (102) fixed to the right end of the inner wall of the square tube (101), a cleaning component (2) for preventing the filter plate (102) from clogging is provided on the outer top surface of the square tube (101), and a pressure relief component (3) is provided on the left end of the outer bottom surface of the square tube (101); wherein, the pressure relief component (3) includes a square sleeve (301) fixed and connected to the left end of the outer bottom surface of the square tube (101), a wedge block (302) is slidably inserted into the inside of the square sleeve (301), and the top end of the wedge block (302) extends to the square tube (101). The inner surface of the sleeve (301) is in contact with the inner top surface of the sleeve, while the bottom end extends to the outer bottom surface of the sleeve (301) and is fixed with a square plate (303). A connecting plate (304) is fixedly installed on the right end of the outer side wall of the sleeve (301). A drive motor (305) is fixedly installed on the outer top surface of the connecting plate (304). A lead screw (306) is rotatably installed on the outer bottom surface of the connecting plate (304). A cylinder (307) is threaded onto the outer side of the lead screw (306). The outer bottom surface of the cylinder (307) is fixedly connected to the square plate (303). One end of the lead screw (306) extends to the outer top surface of the connecting plate (304) and is fixedly connected to the output end of the drive motor (305).

2. The novel pulverized coal injection pressure relief auxiliary device according to claim 1, characterized in that, The cleaning assembly (2) includes a protective cover (201) fixedly installed at the center of the outer wall on the left side of the filter plate (102). A rotating shaft (202) is rotatably installed on the inner top surface of the protective cover (201). A bevel gear (203) is fixedly installed at one end of the rotating shaft (202), while the other end passes through the protective cover (201) and extends to the outer top surface of the square tube (101). A drive motor (204) is fixedly installed on the outer top surface of the square tube (101) at the rotating shaft (202). The output end of the drive motor (204) is fixedly connected to the rotating shaft (202).

3. The novel pulverized coal injection pressure relief auxiliary device according to claim 2, characterized in that, A rotating shaft (205) is rotatably mounted at the center of the outer right side of the filter plate (102). A brush (206) is fixedly mounted at one end of the rotating shaft (205), while the other end extends into the interior of the protective cover (201) and is fixed with a bevel gear (207). The bevel gear (203) and the bevel gear (207) are meshed with each other.

4. The novel pulverized coal injection pressure relief auxiliary device according to claim 1, characterized in that, A connecting block (4) is fixed inside the square tube (101) and at the top of the left outer wall of the wedge block (302). A round sleeve (401) is fixedly installed on the bottom surface of the connecting block (4). An electric push rod (402) is fixedly installed on the left outer wall of the square sleeve (301).

5. A novel pulverized coal injection pressure relief auxiliary device according to claim 4, characterized in that, The output end of the electric push rod (402) extends into the interior of the square tube (101) and is fixed with a circular plate (403), which is inserted into the inner side of the circular sleeve (401).

6. The novel pulverized coal injection pressure relief auxiliary device according to claim 1, characterized in that, The top of the right outer wall of the wedge block (302) is designed with an inclination.

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