Coal drop pipe of coal conveying system of power plant

Abstract

The utility model provides a coal drop pipe of a coal conveying system of a power plant, and relates to the technical field of coal drop pipes. Threads are formed in the inner side wall of the right end of the coal dropping pipe; and a fixing ring is fixedly mounted at the outer end of the left end of the coal falling pipe. When coal is conveyed on the wear-resisting plate, impact and friction of the coal are directly borne, direct abrasion to the internal structure is reduced, accordingly, the main body structure of the inner wall pipe and the main body structure of the coal drop pipe are protected, the wear-resisting plate can protect the inner wall pipe, the inner wall pipe can also protect the inner wall of the coal drop pipe, and the inner wall pipe serves as a second defense line; the influence of abrasion on the main body structure of the coal drop pipe is further reduced, so that the inner wall of the coal drop pipe can be effectively protected, and the problems that coal needs to be conveyed, the pipe wall is abraded in the coal conveying process, the pipe wall needs to be effectively protected, otherwise, the inner wall of the coal drop pipe is seriously abraded and damaged by the coal, and the service life of the coal drop pipe is prolonged are solved. Therefore, the service life of the coal drop pipe is shortened.

Description

Technical Field

[0001] This utility model relates to the field of coal chutes, and in particular to a coal chute for a power plant coal conveying system. Background Technology

[0002] A thermal power plant is a facility that converts the thermal energy of fuels such as coal into electrical energy. In a thermal power plant, the coal conveying system is a crucial component ensuring the transportation of coal from storage locations to the boiler. The coal conveying system typically includes several components such as conveyor belts, crushers, screening equipment, and coal chutes. The coal chutes are coal transport channels connecting different heights or different equipment, primarily used to smoothly guide coal from the conveyor belt or other equipment to the entrance of the next process. Coal chutes are usually steel or composite material pipe structures, and their shape and dimensions are designed according to the layout of the coal conveying system and the coal flow rate. Common shapes include straight pipes, bends, and T-shaped pipes to ensure smooth coal flow. To reduce wear and impact on the pipe walls during transportation, the inner wall of the coal chutes is usually lined with wear-resistant plates or coatings to extend its service life.

[0003] During the use of coal chutes, coal needs to be transported, and the pipe wall will wear down during the transportation process. Therefore, the pipe wall needs to be effectively protected. Otherwise, the coal will severely wear down the inner wall of the coal chutes, causing damage and shortening the service life of the coal chutes. Utility Model Content

[0004] This disclosure relates to a coal chute in a power plant coal conveying system. The chute has an inner wall pipe installed within its inner cavity as an intermediate protective layer. A wear-resistant plate is installed within the inner cavity of the inner wall pipe, directly contacting the coal and bearing the main wear. When coal is conveyed on the wear-resistant plate, it directly withstands the impact and friction of the coal, reducing direct wear on the internal structure and thus protecting the main structure of both the inner wall pipe and the chute. The wear-resistant plate protects the inner wall pipe, and the inner wall pipe also protects the inner wall of the chute. The inner wall pipe acts as a second line of defense, further reducing the impact of wear on the main structure of the chute. This effectively protects the inner wall of the chute, ensuring that the main structure of the chute hardly comes into direct contact with the coal, greatly reducing the risk of wear and corrosion. The wear-resistant plate can be replaced to protect the main structure of the chute, thereby extending the service life of the chute.

[0005] In a first aspect, this disclosure provides a coal chute for a power plant coal conveying system, specifically comprising: a coal chute; a threaded inner wall at the right end of the coal chute; a fixing ring fixedly installed at the outer end of the left end of the coal chute, the fixing ring having a through circular hole; an inner wall tube fixedly bonded to the inner cavity of the coal chute, the inner wall of the inner wall tube having uniformly formed anti-detachment grooves; and a wear-resistant plate fixedly installed in the inner cavity of the inner wall tube, the wear-resistant plate having uniformly fixedly formed anti-detachment blocks on its sidewall.

[0006] A connecting ring is fixedly installed on the left side of the coal chute, and a through bolt is rotatably installed on the connecting ring; a connecting pipe is rotatably installed at the threaded part of the right end of the coal chute; a limiting plate is slidably installed at the right end of the connecting pipe; a protective cover is fixedly installed at the lower end of the right end of the coal chute, and a fixing hole is opened in the middle of the protective cover; slots are evenly opened on the right side wall of the protective cover, and a protective strip is installed at the slot on the right side of the protective cover; a dust collection box is installed at the bottom of the protective cover.

[0007] In at least some embodiments, a fixing plate is fixedly installed at the outer end of the right end of the coal chute, and the fixing plate has through round holes at both ends, and three through buffer holes are provided on the fixing plate.

[0008] In at least some embodiments, a retaining ring groove is provided on the inner wall of the right end of the coal chute cavity, and a cantilever plate is fixedly installed at the lower end of the fixing plate.

[0009] In at least some embodiments, a receiving bucket is fixedly installed at the left end of the connecting ring, and the receiving bucket has a trumpet-shaped structure.

[0010] In at least some embodiments, ear plates are fixedly installed at both ends of the connecting pipe, and a through bolt is rotatably inserted into the middle of the ear plate.

[0011] In at least some embodiments, a threaded tube is fixedly installed at the left end of the connecting tube, and a retaining ring is fixedly installed at the left side of the threaded tube.

[0012] In at least some embodiments, three reset rods are fixedly installed on the left side of the upper end of the limiting plate, and a reset spring is sleeved on the annular sidewall of the left end of the reset rod, and a retaining ring is installed on the left end of the reset rod.

[0013] In at least some embodiments, scraping blocks are uniformly fixedly installed on the lower end of the left side wall of the limiting plate, and fixing strips are fixedly installed on the lower end of the limiting plate.

[0014] In at least some embodiments, a vacuum cleaner is fixedly installed at the fixing hole in the middle of the protective cover, and a ring of fan blades is fixedly installed on the rotating shaft of the vacuum cleaner.

[0015] This utility model provides a coal chute for a power plant coal conveying system, which has the following beneficial effects:

[0016] In this utility model, when the coal chute is in use, an inner wall tube is installed in the inner cavity of the coal chute as an intermediate protective layer. A wear-resistant plate is installed in the inner cavity of the inner wall tube, directly contacting the coal and bearing the main wear. When the coal is conveyed on the wear-resistant plate, it directly withstands the impact and friction of the coal, reducing direct wear on the internal structure, thus protecting the inner wall tube and the main structure of the coal chute. The wear-resistant plate protects the inner wall tube, and the inner wall tube also protects the inner wall of the coal chute. The inner wall tube, as a second line of defense, further reduces the impact of wear on the main structure of the coal chute. This effectively protects the inner wall of the coal chute, and the main structure of the coal chute hardly comes into direct contact with the coal, greatly reducing the risk of wear and corrosion. The wear-resistant plate can be replaced to protect the main structure of the coal chute, thereby extending the service life of the coal chute.

[0017] By starting the vacuum cleaner, the fan blades on the shaft will rotate rapidly, drawing coal dust into the protective cover. The coal dust then falls from the rectangular opening at the bottom of the protective cover into the dust collection box below. The dust collection box collects the absorbed coal dust, concentrating it in a container for easy subsequent processing and cleaning, preventing coal dust from scattering into the environment and causing pollution or safety hazards. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the present invention.

[0020] In the attached diagram:

[0021] Figure 1 A schematic diagram of the left front upper axis view structure of this application is shown;

[0022] Figure 2 A schematic diagram of the right front upper axis view structure of this application is shown;

[0023] Figure 3 This paper shows a schematic diagram of the disassembled structure of the coal chute and connecting ring of this application;

[0024] Figure 4 A schematic diagram of the disassembled structure of the coal chute section of this application is shown;

[0025] Figure 5 This paper shows a schematic diagram of the disassembled structure of the fixing plate, connecting pipe and limiting plate of this application;

[0026] Figure 6 A schematic diagram of the disassembled structure of the limiting plate and protective cover of this application is shown.

[0027] List of reference numerals

[0028] 1. Coal chute; 101. Fixing ring; 102. Inner wall pipe; 103. Wear-resistant plate; 104. Fixing disc; 105. Buffer hole; 106. Snap ring groove; 107. Cantilever plate; 2. Connecting ring; 201. Inlet bucket; 3. Connecting pipe; 301. Ear plate; 302. Threaded pipe; 303. Snap ring; 4. Limiting plate; 401. Reset rod; 402. Scraper block; 403. Fixing strip; 5. Protective cover; 501. Vacuum cleaner; 502. Protective strip; 503. Dust collection box. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] Example 1: Please refer to Figures 1 to 6 :

[0031] This utility model proposes a coal chuting pipe for a power plant coal conveying system, comprising: a coal chuting pipe 1; a threaded inner wall at the right end of the coal chuting pipe 1; a fixing ring 101 fixedly installed at the outer end of the left end of the coal chuting pipe 1, the fixing ring 101 having a through-hole; an inner wall pipe 102 fixedly bonded to the inner cavity of the coal chuting pipe 1, the inner wall pipe 102 having uniformly formed anti-detachment grooves on its inner sidewall; the inner wall pipe 102 is typically made of wear-resistant materials, such as wear-resistant ceramics, high-chromium cast iron, or polymer materials, which can effectively reduce pipe wall wear and extend the service life of the coal chuting pipe 1; a wear-resistant plate 103 is fixedly installed in the inner cavity of the inner wall pipe 102, and anti-detachment blocks are uniformly fixedly installed on the sidewall of the wear-resistant plate 103; the wear-resistant plate 103 is typically made of highly wear-resistant materials, which can effectively resist wear. The wear and tear from coal flow and particles directly protects the inner wall pipe 102 of the coal chute 1, preventing damage or perforation caused by long-term wear. Anti-detachment blocks on the wear-resistant plate 103 are fixedly inserted into the anti-detachment groove of the inner wall pipe 102, temporarily fixing the wear-resistant plate 103 onto the inner wall pipe 102. During coal transport in the coal chute 1, the coal will be transported on the wear-resistant plate 103, effectively protecting the inner wall pipe 102. Simultaneously, the inner wall pipe 102 also provides isolation and protection for the coal chute 1, thus extending its service life. A fixing plate 104 is fixedly installed at the outer end of the right side of the coal chute 1, with through-holes at both ends. Three through-hole buffer holes 105 are also provided on the fixing plate 104. The reset rod 40... A retaining ring groove 106 is provided on the inner wall of the right end of the inner cavity of the coal drop pipe 1, which passes through the buffer hole 105. A cantilever plate 107 is fixedly installed at the lower end of the fixed plate 104. The cantilever plate 107 is fixedly connected to the protective cover 5. A connecting ring 2 is fixedly installed on the left side of the coal drop pipe 1, and a through bolt is rotatably installed on the connecting ring 2. The bolt on the connecting ring 2 is rotated and inserted into the round hole of the fixed ring 101, and the fixed ring 101 and the connecting ring 2 are fixedly connected. Coal is fed into the left end of the receiving hopper 201 for conveying. The left end of the receiving hopper 201 is larger and more convenient for coal feeding. The receiving hopper 201 is fixedly installed on the left end of the connecting ring 2, and the receiving hopper 201 has a trumpet-shaped structure. A connecting pipe 3 is rotatably installed at the threaded part of the right end of the coal drop pipe 1. Ear plates 301 are fixedly installed at both ends of the connecting pipe 3, and a through bolt is rotatably inserted in the middle of the ear plate 301. The threaded tube 302 is rotatably inserted into the thread at the right end of the coal drop pipe 1. The threaded tube 302 is rotated to the left, and the retaining ring 303 will be rotated and inserted into the retaining ring groove 106. At the same time, the ear plate 301 will be attached to the side wall of the fixed plate 104. Then, the bolt on the ear plate 301 is inserted into the round holes at both ends of the fixed plate 104 to fix the connecting pipe 3 and the fixed plate 104. The bolt on the ear plate 301 is removed, and the threaded tube 302 is rotated to the right for easy removal. The threaded tube 302 is fixedly installed at the left end of the connecting pipe 3, and the retaining ring 303 is fixedly installed at the left side of the threaded tube 302. A limiting plate 4 is slidably installed at the right end of the right side of the connecting pipe 3.A protective cover 5 is fixedly installed at the lower right end of the coal chute 1, and a fixing hole is provided in the middle of the protective cover 5; slots are evenly provided on the right side wall of the protective cover 5, and a through rectangular hole is provided at the bottom of the inner cavity of the protective cover 5.

[0032] Three reset rods 401 are fixedly installed on the left side of the upper end of the limiting plate 4. A reset spring is fitted on the annular sidewall of the left end of each reset rod 401, and a retaining ring is installed on the left end of each reset rod 401. The left sidewall of the limiting plate 4 is in contact with the right end of the connecting pipe 3. When coal rolls out from the right end of the connecting pipe 3, it impacts the limiting plate 4, causing the limiting plate 4 to move to the right. At this time, the reset rods 401 on the left end of the limiting plate 4 also move to the right. Simultaneously, the springs on the reset rods 401 are compressed by the retaining ring and the fixing plate 104, causing the coal to fall from the right end of the connecting pipe 3 and impact the scraper blocks 402. The coal dust on the surface of the coal is touched by the scraper blocks 402, and the falling coal dust is absorbed by the vacuum cleaner 501. Scraper blocks 402 are evenly fixedly installed on the lower end of the left sidewall of the limiting plate 4, and a retaining ring is fixedly installed on the lower end of the limiting plate 4. A vacuum cleaner 501 is fixedly installed at the fixing hole in the middle of the protective cover 5, and a fan blade is fixedly installed on the rotating shaft of the vacuum cleaner 501. When the vacuum cleaner 501 is started, the fan blade on the rotating shaft will rotate rapidly, absorbing the falling coal dust into the protective cover 5. The coal dust then falls from the rectangular opening at the bottom of the protective cover 5 into the dust collection box 503 below. The dust collection box 503 collects the absorbed coal dust for centralized treatment. A protective strip 502 is installed at the groove on the right side of the protective cover 5. When coal falls from the right end of the connecting pipe 3, the protective strip 502 will block the falling coal to prevent it from falling onto the fan blade of the vacuum cleaner 501 and damaging the fan blade. The protective strip 502 is screwed and rotated onto the dust collection box 503. The dust collection box 503 is installed at the bottom of the protective cover 5, and the bottom of the dust collection box 503 rests on a fixed object.

[0033] Example 2, based on Example 1, such as Figure 1 and Figure 6 As shown, a connecting ring 2 is fixedly installed on the left side of the coal chute 1, and a through bolt is rotatably installed on the connecting ring 2; a receiving bucket 201 is fixedly installed on the left end of the connecting ring 2; the bolt on the connecting ring 2 is removed, and then the connecting ring 2 is fixedly welded or glued to the fixed ring 101, so that the connecting ring 2 and the fixed ring 101 are fixedly connected. In this way, the connecting ring 2 and the receiving bucket 201 will not move or fall off when touched, avoiding the bolt from loosening and failing to stabilize the connecting ring 2 after long-term use, and also saving the cost of parts.

[0034] The working principle of this embodiment is as follows: During use, coal is fed into the left end of the receiving hopper 201 for conveying. The left end of the receiving hopper 201 is relatively large, facilitating coal feeding. During the coal conveying process through the coal drop pipe 1, the coal is conveyed on the wear-resistant plate 103, which effectively protects the inner wall pipe 102. Simultaneously, the inner wall pipe 102 also provides isolation and protection for the coal drop pipe 1, thus extending its service life. When coal rolls out from the right end of the connecting pipe 3, it impacts the limiting plate 4. The impact of the coal causes the limiting plate 4 to move to the right, at which point the limiting plate... The reset rod 401 at the left end of the plate 4 will also move to the right. At the same time, the spring on the reset rod 401 will be compressed by the retaining ring and the fixed plate 104. At this time, the coal will fall from the right end of the connecting pipe 3 and hit the scraper block 402. The coal dust mixed in the coal will float. The fan blades on the shaft of the vacuum cleaner 501 will rotate rapidly and absorb the coal dust into the protective cover 5. The coal dust will then fall from the rectangular opening at the bottom of the protective cover 5 into the dust collection box 503 below. The dust collection box 503 collects the absorbed coal dust for convenient centralized treatment.

[0035] The following points should be noted in this article:

[0036] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0037] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0038] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A coal drop chute for a coal handling system of a power plant, comprising: The utility model provides a coal chute (1), its characterized in being that the inner side wall of right end of coal chute (1) is equipped with screw thread, and the outer end fixed mounting of left end of coal chute (1) is equipped with fixed ring (101), and a circle of through hole is equipped on fixed ring (101), and the inner chamber of coal chute (1) is fixedly bonded with inner wall pipe (102), and the inner side wall of inner wall pipe (102) is uniformly equipped with anti -drop groove, and the inner chamber of inner wall pipe (102) is fixedly installed with wear plate (103), and the side wall of wear plate (103) is uniformly fixedly installed with anti -drop block, and the left side fixed mounting of coal chute (1) is equipped with connecting ring (2), and a circle of through bolt is rotatably installed on connecting ring (2), and the screw thread portion of right end of coal chute (1) is rotatably installed with connecting pipe (3), and the right end of right side of connecting pipe (3) is slidably installed with limiting plate (4), and the lower end of right end of coal chute (1) is fixedly installed with protective cover (5), and the middle part of protective cover (5) is equipped with fixed hole, and the right side wall of protective cover (5) is uniformly equipped with notch.

2. A coal drop pipe for a coal handling system of a power plant according to claim 1, characterized in that: The outer end fixed mounting of right end of coal chute (1) is equipped with fixed disc (104), and the both ends of fixed disc (104) are equipped with through circular hole, and three through buffer holes (105) are equipped on fixed disc (104).

3. A coal drop pipe for a coal handling system of a power plant according to claim 2, characterized in that: The inner side wall of right end of the inner chamber of coal chute (1) is equipped with snap ring groove (106), and cantilever plate (107) is fixedly installed at the lower end of fixed disc (104).

4. The coal drop pipe of a coal handling system of a power plant according to claim 1, characterized in that: The left end fixed mounting of connecting ring (2) is equipped with interface hopper (201), and interface hopper (201) is the horn -like structure.

5. The coal drop pipe of a coal handling system of a power plant according to claim 1, characterized in that: The both ends of connecting pipe (3) are fixedly installed with ear plate (301), and the middle part of ear plate (301) is rotatably inserted with through bolt.

6. A coal drop pipe for a coal handling system of a power plant according to claim 1, characterized in that: The left end fixed mounting of connecting pipe (3) is equipped with threaded pipe (302), and the left side fixed mounting of threaded pipe (302) is equipped with snap ring (303).

7. A coal drop pipe for a coal handling system of a power plant according to claim 1, characterized in that: The left side fixed mounting of upper end of limiting plate (4) is equipped with three reset rods (401), and reset spring is sleeved on the annular side wall of the left end of reset rod (401), and stop ring is installed on the left end of reset rod (401).

8. A coal drop pipe for a coal handling system of a power plant according to claim 1, characterized in that: The lower end of left side wall of limiting plate (4) is uniformly fixedly installed with scraping block (402), and the lower end fixed mounting of limiting plate (4) is equipped with fixed strip (403).

9. A coal drop pipe for a coal handling system of a power plant according to claim 1, characterized in that: The fixed hole fixed mounting of middle part of protective cover (5) is equipped with dust collector (501), and a circle of fan blade is fixedly installed on the rotating shaft of dust collector (501).

10. The coal drop pipe of a coal handling system of a power plant according to claim 1, characterized in that: The notch of right side of protective cover (5) is installed with protective strip (502), and dust collecting box (503) is installed at the bottom of protective cover (5).

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