Waste heat recovery device for heat treatment of bearing steel balls

Abstract

A waste heat recovery device for heat treatment of bearing steel balls comprises a heat recovery pipe used for gas conveying and a filter screen installed in the heat recovery pipe and further comprises a spraying assembly, a heat exchanger, a heat exchange liquid inlet pipe, a heat exchange liquid outlet pipe, a spraying liquid outlet pipe and a heat exchange assembly. The bottom end of the spraying assembly is connected with a heat exchanger, and a heat exchange assembly is installed on one side of the top of the spraying assembly. The spraying assembly comprises a barrel body, a flow dividing pipe, a spraying disc, spraying heads and a connecting pipe, the flow dividing pipe is installed on one side of the top end of the barrel body in an embedded mode, the spraying disc is installed at one end of the flow dividing pipe, the spraying heads are arranged on the surface of the bottom end of the spraying disc, and the connecting pipe is installed in the middle of the top end of the barrel body. The device is simple in structure, convenient to spray and filter flue gas generated by heat treatment of bearing steel balls, capable of recycling heat in the flue gas, energy-saving, environment-friendly and beneficial to use.

Description

Technical Field

[0001] The utility model relates to a waste heat recovery device, in particular to a waste heat recovery device for heat treatment of bearing steel balls. Background Art

[0002] Steel balls are widely used in bearings, hardware, electronics, iron art, mechanical equipment, electricity, mining, metallurgy and other fields. The manufacturing process includes stamping-polishing-quenching-hard grinding-appearance-fine grinding-cleaning-rust prevention-finished product packaging and other steps. Among them, quenching is a heat treatment process, and the steel balls need to be heat treated in a heat treatment furnace. In the heat treatment process, the high-temperature workpiece enters the medium cooling process, which generates huge oil fume exhaust gas, causing the workshop to be smoky, greasy and accompanied by irritating odors. If these fumes are not treated, they will cause air pollution, which is not conducive to environmental protection. At the same time, the fumes will carry more heat, making the ambient temperature higher, which is not conducive to the work and will affect the health of the staff. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a waste heat recovery device for heat treatment of bearing steel balls, which effectively solves the problems mentioned in the above technical background.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the utility model includes a heat recovery pipe for gas transportation and a filter installed inside the heat recovery pipe, and also includes a spray assembly, a heat exchanger, a heat exchange liquid inlet pipe, a heat exchange liquid outlet pipe, a spray liquid outlet pipe and a heat exchange assembly, wherein a spray assembly is installed at one end of the heat recovery pipe, a heat exchanger is connected to the bottom end of the spray assembly, and a heat exchange assembly is installed on one side of the top of the spray assembly;

[0005] The spray assembly includes a cylinder, a diverter pipe, a spray plate, a nozzle and a connecting pipe. The diverter pipe is embedded in one side of the top of the cylinder, the spray plate is installed at one end of the diverter pipe, a plurality of nozzles are arranged on the bottom surface of the spray plate, and a connecting pipe is installed in the middle of the top of the cylinder.

[0006] Preferably, a heat exchange liquid inlet pipe is provided on one side of the heat exchanger, a heat exchange liquid outlet pipe is provided on the other side of the heat exchanger, and a spray liquid outlet pipe is provided on the heat exchanger on the side of the heat exchange liquid inlet pipe.

[0007] Preferably, the liquid inlet pipe of the heat exchanger is connected to the liquid discharge pipe at the bottom end of the cylinder.

[0008] Preferably, the heat exchange component includes a shell, a serpentine pipe, a liquid inlet pipe, a liquid discharge pipe and an exhaust pipe. The shell is connected to the connecting pipe, a serpentine pipe is installed inside the shell, a liquid inlet pipe is installed at the bottom of one side of the shell, a liquid discharge pipe is arranged near a corner at the top of the shell, and an exhaust pipe connected to the serpentine pipe is arranged at the top of the other side of the shell.

[0009] Preferably, the ends of the liquid inlet pipe and the liquid discharge pipe are both provided with connecting flanges.

[0010] Preferably, the surface of the shell is covered with thermal insulation cotton.

[0011] Beneficial effects: When the utility model is used, the flue gas passing through the heat recovery pipe is filtered by the filter net, and then enters the interior of the cylinder. The nozzle on the spray plate inside the cylinder sprays spray liquid, and the spray liquid contacts the flue gas to remove most of the recoverable particulate matter and pollutants in the flue gas. The spray liquid exchanges heat through the heat exchanger installed at the bottom, and the heat in the spray liquid is recycled. The filtered and sprayed gas enters the serpentine tube in the shell through the connecting pipe, and the heat exchange liquid enters the interior of the shell through the liquid inlet pipe. The heat exchange liquid in the shell exchanges heat with the gas in the serpentine tube, so that the heat in the filtered and sprayed gas can be recycled, which is energy-saving and environmentally friendly.

[0012] The utility model has a novel structure and an ingenious conception, and is convenient for spraying and filtering the smoke generated by the heat treatment of the bearing steel balls. At the same time, the heat in the smoke can be recycled, which is energy-saving, environmentally friendly and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the spray plate of the utility model;

[0017] Numbers in the figure: 1. heat recovery pipe; 2. filter screen; 3. spray assembly; 4. heat exchanger; 5. heat exchange liquid inlet pipe; 6. heat exchange liquid outlet pipe; 7. spray liquid outlet pipe; 8. heat exchange assembly; 9. cylinder; 10. diverter pipe; 11. spray plate; 12. nozzle; 13. connecting pipe; 14. shell; 15. serpentine pipe; 16. liquid inlet pipe; 17. liquid discharge pipe; 18. exhaust pipe. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-3 The specific implementation modes of the present utility model are further described in detail.

[0019] Embodiment 1, by Figure 1-3The utility model provides a waste heat recovery device for heat treatment of bearing steel balls, comprising a heat recovery pipe 1 for gas transportation and a filter screen 2 installed inside the heat recovery pipe 1, and also comprising a spray assembly 3, a heat exchanger 4, a heat exchange liquid inlet pipe 5, a heat exchange liquid outlet pipe 6, a spray liquid outlet pipe 7 and a heat exchange assembly, wherein the spray assembly 3 is installed at one end of the heat recovery pipe 1, the bottom end of the spray assembly 3 is connected to the heat exchanger 4, and a heat exchange assembly 8 is installed on one side of the top of the spray assembly 3;

[0020] The spray assembly 3 includes a barrel 9, a diverter pipe 10, a spray plate 11, a nozzle 12 and a connecting pipe 13. The diverter pipe 10 is embedded in one side of the top of the barrel 9, the spray plate 11 is installed at one end of the diverter pipe 10, and a plurality of nozzles 12 are arranged on the bottom surface of the spray plate 11. The connecting pipe 13 is installed in the middle of the top of the barrel 9, and a filter is installed at the bottom of the barrel 9.

[0021] A heat exchange liquid inlet pipe 5 is provided on one side of the heat exchanger 4 , a heat exchange liquid outlet pipe 6 is provided on the other side of the heat exchanger 4 , and a spray liquid outlet pipe 7 is provided on the heat exchanger 4 on one side of the heat exchange liquid inlet pipe 5 .

[0022] The liquid inlet pipe of the heat exchanger 4 is connected to the liquid discharge pipe at the bottom end of the cylinder 9, which facilitates the connection and use of the heat exchanger 4 and the cylinder 9.

[0023] The heat exchange assembly 8 includes a shell 14, a serpentine tube 15, a liquid inlet pipe 16, a liquid discharge pipe 17 and an exhaust pipe 18. The shell 14 is connected to the connecting pipe 13. The serpentine tube 15 is installed inside the shell 14. The liquid inlet pipe 16 is installed at the bottom of one side of the shell 14. The liquid discharge pipe 17 is arranged at the top of the shell 14 near a corner. The exhaust pipe 18 connected to the serpentine tube 15 is arranged at the top of the other side of the shell 14. When in use, the filtered and sprayed gas enters the serpentine tube 15 in the shell 14 through the connecting pipe 13, and the heat exchange liquid enters the inside of the shell 14 through the liquid inlet pipe 16. The heat of the heat exchange liquid in the shell 14 is exchanged with the heat of the gas in the serpentine tube 15, so that the heat in the filtered and sprayed gas can be recycled, which is energy-saving and environmentally friendly.

[0024] The ends of the liquid inlet pipe 16 and the liquid discharge pipe 17 are both provided with connecting flanges to facilitate the connection and use of the liquid inlet pipe 16 and the liquid discharge pipe 17 .

[0025] The surface of the shell 14 is covered with thermal insulation cotton, so that the shell 14 has good thermal insulation performance and prevents heat from dissipating.

[0026] Working principle: When the utility model is used, the flue gas passing through the heat recovery pipe 1 is filtered by the filter 2, and then enters the interior of the cylinder 9. The nozzle 12 on the spray plate 11 inside the cylinder 9 sprays spray liquid, and the spray liquid contacts the flue gas to remove most of the recoverable particulate matter and pollutants in the flue gas. The spray liquid exchanges heat through the heat exchanger 4 installed at the bottom, and the heat in the spray liquid is recycled. The filtered and sprayed gas enters the serpentine tube 15 in the shell 14 through the connecting pipe 13, and the heat exchange liquid enters the interior of the shell 14 through the liquid inlet pipe 16. The heat exchange liquid in the shell 14 exchanges heat with the gas in the serpentine tube 15, so that the heat in the filtered and sprayed gas can be recycled, which is energy-saving and environmentally friendly.

[0027] Beneficial effects: The utility model has a novel structure and an ingenious conception, and is convenient for spraying and filtering the flue gas generated by the heat treatment of the bearing steel balls. At the same time, the heat in the flue gas can be recycled, which is energy-saving and environmentally friendly and is easy to use.

[0028] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A waste heat recovery device for heat treatment of bearing steel balls, comprising a heat recovery pipe (1) for gas transportation and a filter screen (2) installed inside the heat recovery pipe (1), characterized in that: It also comprises a spray assembly (3), a heat exchanger (4), a heat exchange liquid inlet pipe (5), a heat exchange liquid outlet pipe (6), a spray liquid outlet pipe (7) and a heat exchange assembly (8), wherein one end of the heat recovery pipe (1) is installed with the spray assembly (3), the bottom end of the spray assembly (3) is connected to the heat exchanger (4), and one side of the top of the spray assembly (3) is installed with the heat exchange assembly (8); The spray assembly (3) comprises a barrel (9), a flow distribution pipe (10), a spray plate (11), a nozzle (12) and a connecting pipe (13); the flow distribution pipe (10) is embedded and installed on one side of the top of the barrel (9); the spray plate (11) is installed on one end of the flow distribution pipe (10); a plurality of nozzles (12) are arranged on the bottom surface of the spray plate (11); and the connecting pipe (13) is installed in the middle of the top of the barrel (9).

2. A waste heat recovery device for heat treatment of bearing steel balls according to claim 1, characterized in that: A heat exchange liquid inlet pipe (5) is provided on one side of the heat exchanger (4), a heat exchange liquid outlet pipe (6) is provided on the other side of the heat exchanger (4), and a spray liquid outlet pipe (7) is provided on the heat exchanger (4) on the side of the heat exchange liquid inlet pipe (5).

3. A waste heat recovery device for heat treatment of bearing steel balls according to claim 1, characterized in that: The liquid inlet pipe of the heat exchanger (4) is connected to the liquid discharge pipe at the bottom end of the cylinder (9).

4. A waste heat recovery device for heat treatment of bearing steel balls according to claim 1, characterized in that: The heat exchange assembly (8) comprises a shell (14), a serpentine tube (15), a liquid inlet tube (16), a liquid discharge tube (17) and an exhaust tube (18); the shell (14) is connected to the connecting tube (13); the serpentine tube (15) is installed inside the shell (14); the liquid inlet tube (16) is installed at the bottom of one side of the shell (14); the liquid discharge tube (17) is arranged at a position near a corner of the top of the shell (14); and the exhaust tube (18) connected to the serpentine tube (15) is arranged at the top of the other side of the shell (14).

5. A waste heat recovery device for heat treatment of bearing steel balls according to claim 4, characterized in that: The ends of the liquid inlet pipe (16) and the liquid discharge pipe (17) are both provided with connecting flanges.

6. A waste heat recovery device for heat treatment of bearing steel balls according to claim 4, characterized in that: The surface of the shell (14) is coated with thermal insulation cotton.

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