Waste heat recycling device of valve assembly workshop

Abstract

The utility model relates to the technical field of waste heat recycling, in particular to a waste heat recycling device of a valve assembly workshop, which comprises a heat exchange box and a scraping mechanism. A heat exchange pipe is rotationally connected into the heat exchange box and is in a snakelike bent shape. The scraping mechanism comprises a plurality of connecting rods which are arranged on the heat exchange tube and are horizontally distributed, mounting rings arranged on the connecting rods, two rotating rods which are symmetrically distributed on the mounting rings, scraping plates arranged on the rotating rods, and a driving assembly arranged on the heat exchange box; the scraping plate is in sliding connection with the heat exchange box, and the driving assembly comprises a fixing frame arranged on the heat exchange box, a motor arranged on the fixing frame, a main shaft rotationally connected to the fixing frame, a first gear coaxially arranged on the main shaft and a second gear arranged on the heat exchange pipe. According to the utility model, not only is the defect that scale is accumulated and attached to the heat exchange tube and the heat exchange box avoided, but also the flowability of water is improved, so that the heat exchange efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery and utilization technology, and in particular to a waste heat recycling device for valve assembly workshops. Background Technology

[0002] The residual heat temperature in valve assembly workshops varies depending on the specific process steps, primarily relying on the processing methods and equipment types involved in production. If the workshop mainly involves machining and assembly, the residual heat is mainly generated by equipment operation and friction, and this type of residual heat temperature is usually low, generally not exceeding 50-80℃. Processes involving welding or localized heat treatment will generate higher residual heat. Some valves require high-temperature sealing tests, and the residual heat temperature around the testing equipment may approach 200-300℃ (such as when simulating high-temperature operating conditions).

[0003] Chinese Patent No. CN213179553U discloses a waste heat recovery and utilization device for a hot-dip galvanizing workshop. The device includes an air intake unit installed on the workshop body to absorb high-temperature oil and gas within the workshop, and a heat exchange unit connected to the air outlet of the air intake unit. The air intake unit includes an air intake pipe, an inverted T-shaped pipe, a movable seat, a reciprocating screw, a first motor, a rack, and gears. The heat exchange unit includes an oil-gas separator, a heat exchange box, an oil supply pipe, and an air supply pipe. A first heat dissipation pipe and a second heat dissipation pipe are fixedly installed on the sections of the air supply pipe and oil supply pipe located within the heat exchange box. The air intake unit effectively absorbs the oil and gas throughout the workshop, improving the waste heat recovery and utilization rate. The heat exchange unit extends the heat exchange path, increases the heat exchange area, and improves the waste heat recovery efficiency.

[0004] However, the above technical solution has the following shortcomings: After long-term use, some inorganic salts in the water will decompose due to heat, producing crystal scale that accumulates in the heat exchange box. This scale will not only affect the heat exchange efficiency between high-temperature gas and water, but also provide an attachment surface for microorganisms, further promoting their growth. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a waste heat recycling device for valve assembly workshops. This device not only avoids the drawbacks of scale buildup on heat exchange tubes and heat exchange boxes, but also improves the fluidity of water to enhance heat exchange efficiency.

[0006] The present invention relates to a waste heat recycling device for a valve assembly workshop, comprising a heat exchange box and a scraping mechanism. The heat exchange box contains rotatably connected heat exchange tubes, which are serpentine in shape. The scraping mechanism includes multiple horizontally distributed connecting rods mounted on the heat exchange tubes, mounting rings on the connecting rods, two symmetrically distributed rotating rods on the mounting rings, scrapers on the rotating rods, and a drive assembly mounted on the heat exchange box. The scrapers are slidably connected to the heat exchange box. The drive assembly includes a fixed frame mounted on the heat exchange box, a motor mounted on the fixed frame, a main shaft rotatably connected to the fixed frame, a first gear coaxially mounted on the main shaft, and a second gear mounted on the heat exchange tubes. The motor and main shaft are driven together, and the first and second gears are meshed together.

[0007] Preferably, the scraper is provided with a bend, and the bend is slidably connected to the heat exchange box.

[0008] Preferably, a fixing plate is provided on the rotating rod, and the fixing plate is provided with multiple through holes.

[0009] Preferably, a base is provided below the heat exchange box, and an air supply assembly is provided on the base. The air supply assembly includes an exhaust fan provided on the base, a first air guide pipe and a second air guide pipe respectively connected to the air inlet and air outlet of the exhaust fan, and the second air guide pipe and the heat exchange tube are connected to each other.

[0010] Preferably, a rotary joint is provided on the second air guide pipe, and the heat exchange pipe and the rotary joint are rotatably connected.

[0011] Preferably, the base is provided with two support seats, and the heat exchange box is set on the support seats.

[0012] Preferably, the heat exchange box is provided with an inlet pipe and a drain pipe, and a first control valve and a second control valve are respectively provided on the inlet pipe and the drain pipe.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] This invention features a scraping mechanism that prevents scale buildup on the heat exchange tube surface by driving the tube, maintaining cleanliness and ensuring good heat exchange performance. Simultaneously, it rotates the scraper and fixing plate, scraping away scale from the inside of the heat exchange box. This prevents scale buildup and adhesion to the inner wall of the heat exchange box, facilitating scale removal during cleaning and preventing the growth of microorganisms. The through-holes on the fixing plate create more turbulence as water flows through, which, combined with the rotating heat exchange tubes, improves water flow and significantly increases heat exchange efficiency, making it highly practical. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial cross-sectional schematic diagram of the heat exchange box of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the drive component of this utility model.

[0019] Reference numerals: 1. Heat exchange box; 2. Heat exchange tube; 3. Connecting rod; 4. Mounting ring; 5. Rotating rod; 6. Scraper; 7. Bending part; 8. Fixing frame; 9. Motor; 10. Main shaft; 11. First gear; 12. Second gear; 13. Fixing plate; 14. Through hole; 15. Base; 16. Exhaust fan; 17. First air guide pipe; 18. Second air guide pipe; 19. Rotary joint; 20. Water inlet pipe; 21. First control valve; 22. Drain pipe; 23. Second control valve; 24. Support base. Detailed Implementation

[0020] Example 1

[0021] like Figures 1-4 As shown, the waste heat recycling device for the valve assembly workshop proposed in this embodiment includes a heat exchange box 1 and a scraping mechanism; a heat exchange tube 2 is rotatably connected inside the heat exchange box 1. The heat exchange tube 2 is in a serpentine bend shape, which can increase the heat exchange area and improve the heat exchange efficiency.

[0022] The scraping mechanism includes multiple horizontally distributed connecting rods 3 mounted on the heat exchange tubes 2, mounting rings 4 mounted on the connecting rods 3, two symmetrically distributed rotating rods 5 mounted on the mounting rings 4, scraper 6 mounted on the rotating rods 5, and a drive assembly mounted on the heat exchange box 1. The scraper 6 is slidably connected to the heat exchange box 1. The drive assembly includes a fixed frame 8 mounted on the heat exchange box 1, a motor 9 mounted on the fixed frame 8, a main shaft 10 rotatably connected to the fixed frame 8, a first gear 11 coaxially mounted on the main shaft 10, and a second gear 12 mounted on the heat exchange tubes 2. The motor 9 and the main shaft 10 are driven together, and the first gear 11 and the second gear 12 are meshed together. The scraper 6 has a bent portion 7, which is slidably connected to the heat exchange box 1.

[0023] A fixing plate 13 is provided on the rotating rod 5, and multiple through holes 14 are provided on the fixing plate 13.

[0024] In this embodiment, when hot air and water in the heat exchange box 1 are introduced into the heat exchange tube 2 for heat exchange to recycle the waste heat in the valve assembly workshop, the motor 9 is started simultaneously. The motor 9 drives the main shaft 10 to rotate, and the main shaft 10 drives the first gear 11 to rotate, so that the first gear 11 and the second gear 12 mesh and transmit power. In turn, the second gear 12 drives the heat exchange tube 2 to rotate. Rotation helps to prevent the deposition of dirt on the surface of the heat exchange tube 2, keeping the surface of the heat exchange tube 2 clean, thereby maintaining a good heat exchange effect. At the same time, rotating the heat exchange tube 2 can increase the degree of fluid turbulence. This promotes heat transfer, and as the heat exchange tube 2 rotates, it also drives the connecting rod 3 and the mounting ring 4 to rotate. In turn, the rotating rod 5 drives the scraper 6 and the fixing plate 13 to rotate. The scraper 6 can scrape the inside of the heat exchange box 1 to prevent scale from accumulating and adhering to the inner wall of the heat exchange box 1. This not only helps to remove scale when cleaning the heat exchange box 1, but also avoids the disadvantage of microbial attachment and reproduction. When the fixing plate 13 rotates, it generates more turbulence when the water flows through the through hole 14 to improve the fluidity of the water and further improve the heat exchange efficiency, which has good practicality.

[0025] Example 2

[0026] like Figure 1 and Figure 4 As shown, the waste heat recycling device for the valve assembly workshop proposed in this embodiment, compared with the first embodiment, has a base 15 below the heat exchange box 1, and two support seats 24 on the base 15. The heat exchange box 1 is placed on the support seats 24, and the support seats 24 are used to support the entire heat exchange box 1.

[0027] An air supply assembly is provided on the base 15. The air supply assembly includes an exhaust fan 16 provided on the base 15, a first air guide pipe 17 and a second air guide pipe 18 that are respectively connected to the air inlet and air outlet of the exhaust fan 16. The second air guide pipe 18 is connected to the heat exchange pipe 2. A rotary joint 19 is provided on the second air guide pipe 18. The heat exchange pipe 2 and the rotary joint 19 are rotatably connected.

[0028] The heat exchanger 1 is equipped with an inlet pipe 20 and a drain pipe 22, and a first control valve 21 and a second control valve 23 are respectively installed on the inlet pipe 20 and the drain pipe 22.

[0029] In this embodiment, the exhaust fan 16 extracts the waste heat from the valve assembly workshop through wind power and transports it to the heat exchange tube 2 through the first air guide pipe 17 and the second air guide pipe 18 for heat exchange. At the same time, the rotary joint 19 is set to connect the second air guide pipe 18 and the heat exchange tube 2 while ensuring that the rotation of the heat exchange tube 2 is not affected. The water inlet pipe 20 and the first control valve 21 are used to control the supply of water to the inside of the heat exchange box 1, and the drain pipe 22 and the second control valve 23 are used to control the discharge of water from the inside of the heat exchange box 1. Meanwhile, a temperature sensor (not shown) is installed on the heat exchange box 1 to monitor the temperature of the water inside the heat exchange box 1 in real time.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A waste heat recycling device for a valve assembly workshop, characterized in that, include: The heat exchange box (1) has a heat exchange tube (2) rotatably connected inside it, and the heat exchange tube (2) is in a serpentine bend shape; The scraping mechanism includes multiple horizontally distributed connecting rods (3) on the heat exchange tube (2), mounting rings (4) on the connecting rods (3), two symmetrically distributed rotating rods (5) on the mounting rings (4), scrapers (6) on the rotating rods (5), and a drive assembly on the heat exchange box (1); the scrapers (6) and the heat exchange box (1) are slidably connected; the drive assembly includes a fixed frame (8) on the heat exchange box (1), a motor (9) on the fixed frame (8), a main shaft (10) rotatably connected to the fixed frame (8), a first gear (11) coaxially arranged on the main shaft (10), and a second gear (12) arranged on the heat exchange tube (2); the motor (9) and the main shaft (10) are drivenly connected, and the first gear (11) and the second gear (12) are meshed.

2. The waste heat recycling device for the valve assembly workshop according to claim 1, characterized in that, The scraper (6) is provided with a bend (7), and the bend (7) is slidably connected to the heat exchange box (1).

3. The waste heat recycling device for the valve assembly workshop according to claim 1, characterized in that, A fixing plate (13) is provided on the rotating rod (5), and multiple through holes (14) are provided on the fixing plate (13).

4. The waste heat recycling device for the valve assembly workshop according to claim 1, characterized in that, A base (15) is provided below the heat exchange box (1), and an air supply assembly is provided on the base (15). The air supply assembly includes an exhaust fan (16) provided on the base (15), a first air guide pipe (17) and a second air guide pipe (18) respectively connected to the air inlet and air outlet of the exhaust fan (16). The second air guide pipe (18) and the heat exchange tube (2) are connected to each other.

5. The waste heat recycling device for the valve assembly workshop according to claim 4, characterized in that, A rotary joint (19) is provided on the second air guide pipe (18), and the heat exchange pipe (2) and the rotary joint (19) are rotatably connected.

6. The waste heat recycling device for the valve assembly workshop according to claim 4, characterized in that, Two support seats (24) are provided on the base (15), and the heat exchange box (1) is set on the support seats (24).

7. The waste heat recycling device for a valve assembly workshop according to claim 1, characterized in that, The heat exchange box (1) is equipped with an inlet pipe (20) and a drain pipe (22), and a first control valve (21) and a second control valve (23) are respectively installed on the inlet pipe (20) and the drain pipe (22).

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