Boiler header structure

Abstract

The utility model discloses a boiler header structure, and particularly relates to the field of boiler headers, which comprises a header cylinder, two sides of the bottom of the header cylinder are respectively and fixedly communicated with a first cleaning port and a second cleaning port, a reciprocating screw rod is rotatably connected in the header cylinder, and a motor for driving the reciprocating screw rod to rotate is arranged on the header cylinder. The reciprocating lead screw is in threaded transmission connection with a transmission disc, a guide sliding rod is fixedly connected into the header barrel and movably penetrates through the transmission disc, the outer ring face of the transmission disc is rotationally connected with a rotating ring, the outer ring face of the rotating ring is fixedly connected with a brush, the brush is movably in contact with the inner wall of the header barrel, and abrasion-resistant scrapers are fixedly erected on the two sides of the transmission disc. The utility model solves the technical problems that in the current boiler header, the brush acts on the inner wall of the cylinder in a transverse moving manner, so that the cleaning is not thorough, and the cleaned water scale is not easy to collect in a centralized manner, so that the inconvenience is brought to the subsequent water scale treatment.

Description

Technical Field

[0001] The utility model relates to the field of boiler headers, and more specifically, to a boiler header structure. Background Art

[0002] In order to improve the boiler efficiency, the cylindrical boiler has gradually evolved into a tubular boiler to increase the heat transfer area. The boiler water flows from the boiler drum into the lower box through the downcomer, and is distributed to each tube bundle by the box. The water in these tube bundles continuously absorbs heat energy, converges into the upper box and then flows back into the boiler drum. We call the upper and lower boxes headers or collectors. A header (also known as a collector) is an important part of a boiler, and is divided into an upper header and a lower header. At present, the boiler header needs to be descaled and maintained inside the box (cylinder).

[0003] Patent No. CN217604066U discloses a boiler header that is easy to clean, which is convenient for cleaning the inner wall of the box, preventing the pipe orifice from being blocked, and improving the smoothness of water flow; it includes a base, a motor, a box body, two groups of brackets, a coupling, a lead screw, two groups of guide rods, a cleaning ring and a screw cap. A vertical plate is provided at the top of the base, and the motor is fixedly installed at the left end of the vertical plate. The bottom end of the box body is installed on the top of the base through two groups of brackets. The lead screw rotates through the left end of the box body, and the left end of the lead screw is connected to the output end of the motor through a coupling. Two groups of guide rods are respectively fixedly installed inside the box body. A connecting plate is provided in the middle of the cleaning ring, and the connecting plate is threadedly connected to the lead screw. The connecting plate slides through the two groups of guide rods. A plurality of groups of brushes are provided on the outer ring of the cleaning ring, and the brushes are in contact with the inner wall of the box body. A chemical addition pipe is provided at the top of the box body, and the screw cap covers the chemical addition pipe. A drain pipe is provided at the right end of the box body, and a valve is provided on the drain pipe.

[0004] In the above patent, the inventor believes that when this patent is in use, although the cleaning effect of the scale in the boiler header can be achieved, there is a problem that the cleaning is not thorough enough when the brush acts on the inner wall of the cylinder in a horizontal movement manner. At the same time, the removed scale is not easy to be centrally collected, which brings inconvenience to the subsequent treatment of the scale. Summary of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a boiler header structure. The technical problem to be solved by the utility model is: in the current boiler header, there is a problem that the cleaning is not thorough enough when the brush acts on the inner wall of the cylinder in a horizontal movement manner. At the same time, the removed scale is not easy to be centrally collected, which brings inconvenience to the subsequent treatment of the scale.

[0006] To achieve the above object, the present utility model provides the following technical solution: a boiler header structure, including a header cylinder, both sides of the bottom of the header cylinder are fixedly communicated with a first cleaning port and a second cleaning port respectively, a reciprocating screw rod is rotatably connected in the header cylinder, a motor for driving the reciprocating screw rod to rotate is arranged on the header cylinder, a transmission disc is threadedly connected to the reciprocating screw rod, a guiding slide rod is fixedly connected in the header cylinder, the guiding slide rod movably penetrates through the transmission disc, a rotating ring is rotatably connected to the outer ring surface of the transmission disc, and a brush is fixedly connected to the outer ring surface of the rotating ring, the brush is in movable contact with the inner wall of the header cylinder, wear-resistant scraping plates are fixedly arranged on both sides of the transmission disc, the wear-resistant scraping plates are in movable contact with the inner bottom of the header cylinder, and a rotation driving structure for driving the rotating ring to rotate is arranged on the transmission disc and the guiding slide rod.

[0007] In a preferred embodiment, end covers are arranged on both the first cleaning port and the second cleaning port.

[0008] In a preferred embodiment, a telescopic groove is arranged on the transmission disc, and the guiding slide rod is slidably connected in the telescopic groove.

[0009] In a preferred embodiment, a fixing rod is fixedly connected to the transmission disc, and the wear-resistant scraping plate is fixedly connected to the fixing rod.

[0010] In a preferred embodiment, the rotation driving structure includes a tooth block group fixedly connected to the bottom of the guiding slide rod, a first gear meshed with the tooth block group, a second gear coaxially fixed to one end of the first gear, a third gear meshed with the second gear, a transmission shaft fixedly connected to one end of the third gear, a fourth gear fixedly connected to the end of the transmission shaft facing away from the third gear, and a tooth ring meshed with the fourth gear. The first gear is rotatably connected to the transmission disc, and the tooth ring is fixedly connected to the rotating ring.

[0011] In a preferred embodiment, a rotating bracket is fixedly connected to the transmission disc, and the transmission shaft is rotatably connected to the rotating bracket.

[0012] The technical effects and advantages of the present utility model:

[0013] A boiler header structure of the present utility model controls the lateral movement of a driving disk within the header cylinder. The rotation driving structure can drive a rotating ring to rotate by utilizing the linear movement of the driving disk. In this way, the brush in contact with the inner wall of the header cylinder can perform linear and rotational movements. Thus, the diverse movement effects of the brush can improve the thoroughness of scale removal on the inner wall of the header cylinder. At the same time, a pair of wear-resistant scraping plates move synchronously with the driving disk. The wear-resistant scraping plates in active contact with the inner bottom position of the header cylinder can achieve the effect of pushing the scale. In this way, the scale scraped and deposited at the inner bottom of the header cylinder can be concentrated on both sides of the header cylinder, and in cooperation with the positions of the first cleaning port and the second cleaning port, it is convenient to quickly clean the scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a schematic diagram of the overall structure of the present utility model.

[0015] Figure 2 For the present utility model Figure 1 is a sectional view.

[0016] Figure 3 For the present utility model Figure 1 is a schematic diagram of the structure without the header cover.

[0017] Figure 4 For the present utility model Figure 3 is a side view.

[0018] Figure 5 is a schematic diagram of the structure of the rotation driving structure of the present utility model.

[0019] Reference numerals are: 1, header cylinder; 2, first cleaning port; 3, second cleaning port; 4, reciprocating lead screw; 5, motor; 6, driving disk; 61, guiding slide bar; 7, rotating ring; 71, brush; 8, wear-resistant scraping plate; 9, rotation driving structure; 91, tooth block group; 92, first gear; 93, second gear; 94, third gear; 95, transmission shaft; 96, fourth gear; 97, tooth ring; 10, fixed rod; 11, rotating bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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 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] With reference to Figures 1-5The utility model provides a boiler header structure, including a header barrel 1. In the present application, a bend pipe group can be arranged on the header barrel 1, which is not shown in the figure. The bend pipe group can be used to evenly distribute and heat the working medium. The two sides of the bottom of the header barrel 1 are respectively fixedly connected with a first cleaning port 2 and a second cleaning port 3. A reciprocating screw rod 4 is rotatably connected in the header barrel 1. A motor 5 for driving the reciprocating screw rod 4 to rotate is arranged on the header barrel 1. The motor 5 can be connected to the reciprocating screw rod 4 in the header barrel 1 through a coupling. A transmission disk 6 is threadedly connected on the reciprocating screw rod 4. A guide slide rod 61 is fixedly connected in the header barrel 1. The guide slide rod 61 movably penetrates the transmission disk 6. The guide slide rod 61 is used to For the linear guidance of the transmission disc 6, the outer ring surface of the transmission disc 6 is rotatably connected with a rotating ring 7, and the rotating ring 7 can be rotatably connected to the transmission disc 6 through a bearing, and the outer ring surface of the rotating ring 7 is fixedly connected with a brush 71, and the brush 71 can be a metal brush, and the brush 71 is evenly arranged on the outer ring surface of the rotating ring 7, and the brush 71 is in active contact with the inner wall of the collecting tube 1. Wear-resistant scrapers 8 are fixedly mounted on both sides of the transmission disc 6, and the wear-resistant scrapers 8 can be used to push the scale cleaned by the brush 71, so that it is convenient to centrally treat the scale, and the wear-resistant scrapers 8 are in active contact with the bottom inner of the collecting tube 1, and a rotating drive structure 9 for driving the rotating ring 7 to rotate is provided on the transmission disc 6 and the guide slide rod 61.

[0022] The first cleaning port 2 and the second cleaning port 3 are both provided with end covers, and the corresponding end covers on the first cleaning port 2 and the second cleaning port 3 can be connected for opening and closing, so that the first cleaning port 2 or the second cleaning port 3 can be conveniently opened to process the concentrated collected scale.

[0023] The transmission disc 6 is provided with a telescopic slot, in which the guide slide bar 61 is slidably connected. The vertical length of the telescopic slot is greater than the vertical length of the guide slide bar 61 , so that a use interval can be provided for a certain structure in the rotary drive structure 9 .

[0024] A fixing rod 10 is fixedly connected to the transmission disc 6 , and the wear-resistant scraper 8 is fixedly connected to the fixing rod 10 . The fixing rod 10 can stabilize the use position of the wear-resistant scraper 8 .

[0025] The rotary drive structure 9 includes a tooth block group 91 fixedly connected to the bottom of the guide slide rod 61, a first gear 92 meshingly connected to the tooth block group 91, a second gear 93 coaxially fixedly connected to one end of the first gear 92, a third gear 94 meshingly connected to the second gear 93, a transmission shaft 95 fixedly connected to one end of the third gear 94, a fourth gear 96 fixedly connected to the end of the transmission shaft 95 facing away from the third gear 94, and a gear ring 97 meshingly connected to the fourth gear 96. The first gear 92 is rotatably connected to the transmission disk 6, and the gear ring 97 is fixedly connected to the rotating ring 7. In the present application, the tooth block group 91 is composed of a plurality of sequentially arranged tooth blocks. In the present application, the fourth gear 96 and the gear ring 97 are both conical structures.

[0026] A rotating bracket 11 is fixedly connected to the transmission disc 6, and a transmission shaft 95 is rotatably connected to the rotating bracket 11. The rotating bracket 11 can provide rotational support for the transmission disc 6, and the first gear 92 can also be rotatably connected to the transmission disc 6 through the structure of the rotating bracket 11.

[0027] Specifically, the reciprocating lead screw 4 is driven to rotate by the motor 5. Under the condition that the guiding slide bar 61 provides sliding guidance for the transmission disc 6, the transmission disc 6 can perform linear reciprocating motion on the reciprocating lead screw 4. At this time, the linearly moving first gear 92 can engage and rotate on the tooth block group 91. The first gear 92 can drive the second gear 93, the third gear 94, and the fourth gear 96 to rotate in sequence. In this way, by utilizing the rotatability of the rotating ring 7 on the transmission disc 6, the toothed ring 97 can drive the brush 71 to rotate. In this way, the brush 71 can act on the inner wall of the header cylinder 1 linearly and rotationally. In this way, the brush 71 can increase the contact surface with the water scale, thereby improving the thoroughness of water scale removal. When the water scale is removed and freely deposited at the bottom of the header cylinder 1, a pair of wear-resistant scrapers 8 can push on the deposited water scale along with the movement of the transmission disc 6. In this way, the water scale can be concentrated and pushed to both sides of the header cylinder 1, that is, the positions of the first cleaning port 2 and the second cleaning port 3, so as to facilitate the rapid collection and treatment of the water scale.

Claims

1. A boiler header structure, comprising a header tube (1), characterized in that: The two sides of the bottom of the collecting barrel (1) are respectively fixedly connected with a first cleaning port (2) and a second cleaning port (3); a reciprocating screw rod (4) is rotatably connected inside the collecting barrel (1); a motor (5) for driving the reciprocating screw rod (4) to rotate is arranged on the collecting barrel (1); a transmission plate (6) is threadedly connected to the reciprocating screw rod (4); a guide slide rod (61) is fixedly connected inside the collecting barrel (1); the guide slide rod (61) movably passes through the transmission plate (6); The outer ring surface of the moving plate (6) is rotatably connected to a rotating ring (7), and the outer ring surface of the rotating ring (7) is fixedly connected to a brush (71), the brush (71) is in active contact with the inner wall of the collecting barrel (1), wear-resistant scrapers (8) are fixedly mounted on both sides of the transmission plate (6), the wear-resistant scrapers (8) are in active contact with the inner bottom of the collecting barrel (1), and a rotating drive structure (9) for driving the rotating ring (7) to rotate is provided on the transmission plate (6) and the guide slide rod (61).

2. A boiler header structure according to claim 1, characterized in that: The first cleaning port (2) and the second cleaning port (3) are both provided with end covers.

3. A boiler header structure according to claim 1, characterized in that: The transmission plate (6) is provided with a telescopic slot, and the guide slide rod (61) is slidably connected in the telescopic slot.

4. A boiler header structure according to claim 1, characterized in that: A fixing rod (10) is fixedly connected to the transmission disc (6), and the wear-resistant scraper (8) is fixedly connected to the fixing rod (10).

5. The boiler header structure according to claim 1, characterized in that: The rotary drive structure (9) comprises a tooth block group (91) fixedly connected to the bottom of the guide slide bar (61), a first gear (92) meshingly connected to the tooth block group (91), a second gear (93) coaxially fixedly connected to one end of the first gear (92), a third gear (94) meshingly connected to the second gear (93), a transmission shaft (95) fixedly connected to one end of the third gear (94), a fourth gear (96) fixedly connected to the end of the transmission shaft (95) facing away from the third gear (94), and a gear ring (97) meshingly connected to the fourth gear (96), the first gear (92) is rotatably connected to the transmission plate (6), and the gear ring (97) is fixedly connected to the rotating ring (7).

6. A boiler header structure according to claim 5, characterized in that: A rotating bracket (11) is fixedly connected to the transmission disc (6), and the transmission shaft (95) is rotatably connected to the rotating bracket (11).

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