Energy-saving device of screw air compressor

Abstract

The utility model belongs to the technical field of screw air compressors, and particularly relates to a screw air compressor energy-saving device which comprises a screw air compressor unit and a water tank, the outer side of the screw air compressor unit is fixedly connected with a heat collecting cover, the water tank is filled with water, a fan is installed on the outer side of the heat collecting cover, and an air guide set extending into the water tank is installed on the fan. A heat exchange hollow pipe is fixedly connected to the water tank, an air return pipe connected with the heat collection cover is fixedly connected to the upper portion of the water tank, the air guide set comprises a hard air pipe installed in the water tank, a hose communicated with the fan is fixedly connected to the hard air pipe, and a plurality of annular air pipes located on the outer side of the heat exchange hollow pipe are fixedly connected to the hard air pipe. A plurality of air outlet nozzles are fixedly connected to the inner side of the annular air pipe. According to the screw air compressor unit, heat energy released when the screw air compressor unit works can be recycled to uniformly heat water in the water tank, so that the purpose of uniformly heating a medium in the spiral part is achieved, and the recycled heat energy is better exchanged.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw air compressors, and particularly relates to an energy-saving device for screw air compressors. Background Art

[0002] Screw air compressor is a compression equipment widely used in the industrial field. During the working process, the air is compressed and the temperature rises because the mechanical energy is converted into wind energy. Therefore, the screw air compressor will inevitably generate heat during the working process. If this part of heat energy can be used for work, the purpose of energy saving can be achieved.

[0003] For example, a Chinese patent with the authorization announcement number CN220581272U discloses an energy-saving recycling device for a mining screw air compressor, which can be used in conjunction with an air compressor case, a water tank, a bellows, a first exhaust fan, an air outlet pipe, a serpentine pipe and an exhaust pipe. After the high-temperature air absorbs heat from the water, it flows back to the air compressor case from the return pipe and is finally discharged into the interior of the air compressor case through the inner pipe. The water in the water tank absorbs heat and heats the cold water circulating in the serpentine pipe. The cold water in the serpentine pipe absorbs heat and heats up, which can be recycled. The hot water in the water tank is cooled again after being absorbed by the cold water in the serpentine pipe, thereby recycling the waste heat generated when the air compressor is running.

[0004] However, since heat energy will gradually be lost during the flow process, when heat energy enters the water tank, the heat energy distribution inside the water tank will gradually decrease from the position close to the heat source to the position far away from the heat source, making the heat energy distribution inside the water tank uneven, which greatly affects the heat exchange effect. Utility Model Content

[0005] The purpose of this utility model is to provide an energy-saving device for a screw air compressor, which can recover the heat energy released when the screw air compressor unit is working to evenly heat the water inside the water tank, so as to achieve the purpose of evenly heating the medium inside the spiral part and better exchange the recovered heat energy.

[0006] The technical solutions adopted in this utility are as follows:

[0007] The energy-saving device of a screw air compressor comprises a screw air compressor unit and a water tank, wherein a heat collecting cover is fixedly connected to the outer side of the screw air compressor unit, the interior of the water tank is filled with water, a fan is installed on the outer side of the heat collecting cover, an air guide group extending to the interior of the water tank is installed on the fan, a heat exchange hollow pipe is fixedly connected to the water tank, an upper part of the water tank is fixedly connected to a return air pipe connected to the heat collecting cover, the air guide group comprises a hard air pipe installed inside the water tank, a hose connected to the fan is fixedly connected to the hard air pipe, a plurality of annular air pipes located outside the heat exchange hollow pipe are fixedly connected to the hard air pipe, a plurality of air outlet nozzles are fixedly connected to the inner side of the annular air pipe, an opening connected to the annular air pipe is formed on the air outlet nozzle, the total area of ​​the air outlet nozzle openings on the same annular air pipe is the total air outlet area, and the total air outlet area of ​​the annular air pipe gradually increases from the end close to the hose to the end far away from the hose.

[0008] Furthermore, the portion of the heat exchange hollow tube located inside the water tank is a spiral portion.

[0009] Furthermore, the opening ranges of the plurality of air outlet nozzles are gradually increased in the order from being close to the hard air pipe to being far away from the hard air pipe.

[0010] Furthermore, a plurality of air volume regulating valves are fixedly connected to the rigid air pipe, and the plurality of annular air pipes are respectively connected to the rigid air pipe via the plurality of air volume regulating valves.

[0011] Furthermore, a horizontal moving group is fixedly connected to the water tank, the hard air pipe is installed on the horizontal moving group, and a plurality of thermal energy detectors are installed on the water tank.

[0012] Furthermore, the horizontal movement group includes a guide rail body fixedly connected to the inside of the water tank and a servo motor fixedly connected to the water tank, the hard air pipe is slidably connected to the inside of the guide rail body, the output end of the servo motor is fixedly connected to a threaded rod, and the threaded rod and the hard air pipe are threadedly connected.

[0013] The technical effects achieved by this utility model are:

[0014] This practical energy-saving device for a screw air compressor can recover the heat energy released by the screw air compressor unit when it is working and evenly heat the water inside the water tank through the structural arrangement of multiple annular air pipes and air outlet nozzles, thereby achieving the purpose of evenly heating the medium inside the spiral part and better exchanging the recovered heat energy. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a schematic diagram of the cutaway structure of the practical water tank;

[0017] Figure 3 It is a partial structural schematic diagram of the interior of the practical water tank;

[0018] Figure 4 This is a practical Figure 3 Schematic diagram of the local structure.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Screw air compressor unit; 2. Heat collecting cover; 3. Water tank; 4. Hollow heat exchange tube; 5. Spiral part; 6. Fan; 7. Hose; 8. Return air pipe; 9. Guide rail body; 10. Hard air pipe; 11. Servo motor; 12. Threaded rod; 13. Annular air pipe; 14. Air outlet nozzle; 15. Air volume control valve; 16. Thermal energy detector. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0022] like Figure 1-2 As shown, the energy-saving device for a screw air compressor comprises a screw air compressor unit 1 and a water tank 3. A heat collecting cover 2 is fixedly connected to the outside of the screw air compressor unit 1. The heat energy released during the operation of the screw air compressor unit 1 will heat the gas inside the heat collecting cover 2. The water tank 3 can be independently arranged with the heat collecting cover 2, or can be directly fixedly connected to the outside of the screw air compressor unit 1 or the heat collecting cover 2. The inside of the water tank 3 is filled with water or other heat exchange medium. A fan 6 is installed on the outside of the heat collecting cover 2. An air guide group extending to the inside of the water tank 3 is installed on the fan 6, so that the heat collecting cover The gas heated inside can enter the water tank 3 to heat the water inside the water tank 3. The water tank 3 is fixedly connected with a heat exchange hollow pipe 4. The part of the heat exchange hollow pipe 4 located inside the water tank 3 is a spiral spiral part 5. When the heated gas contacts the water, the water inside the water tank 3 is heated. When the spiral part 5 contacts the water, the heat energy in the water is transferred to the medium inside the spiral part 5, thereby completing the recovery of heat energy and achieving the purpose of energy saving. In addition, the setting of the spiral part 5 enables the medium to better exchange heat with the water inside the water tank 3.

[0023] The upper part of the water tank 3 is fixedly connected with a return air pipe 8 connected to the heat collecting cover 2 , and the gas after the heat exchange is completed will flow back to the inside of the heat collecting cover 2 through the return air pipe 8 .

[0024] like Figure 1-3As shown, the core of the present technology lies in the structure of the air guide group, which is specifically, the air guide group includes a hard air pipe 10 installed inside the water tank 3, and the hard air pipe 10 is fixedly connected with a hose 7 connected with the fan 6, so that the gas discharged from the fan 6 can enter the hard air pipe 10 through the hose 7, and the hard air pipe 10 is fixedly connected with a plurality of annular air pipes 13 located outside the spiral portion 5, and the inner side of the annular air pipe 13 is fixedly connected with a plurality of air outlet nozzles 14, and the air outlet nozzles 14 are provided with openings connected with the annular air pipes 13, and the air inside the hard air pipe 10 The gas flows through the annular air pipe 13 to the opening of the air outlet nozzle 14, and then is discharged through the opening of the air outlet nozzle 14. The total opening area of ​​the air outlet nozzle 14 on the same annular air pipe 13 is the total air outlet area. Since the heat energy contained in the gas will gradually be lost during the flow, the total air outlet area of ​​the annular air pipe 13 gradually increases from the end close to the hose 7 to the end far from the hose 7, so that the heat energy discharged from multiple annular air pipes 13 is roughly the same, so that the water inside the water tank 3 can be evenly heated, thereby achieving the purpose of evenly heating the medium inside the spiral portion 5.

[0025] like Figure 2-3 As shown, at the same time, the opening ranges of the multiple air outlet nozzles 14 are gradually increased from close to the hard air tube 10 to far away from the hard air tube 10, so that the heat energy discharged by the multiple air outlet nozzles 14 on the same annular air tube 13 is more uniform.

[0026] At the same time, if Figure 4 As shown, a plurality of air volume regulating valves 15 can be fixedly connected to the hard air pipe 10, and a plurality of annular air pipes 13 are respectively connected to the hard air pipe 10 through a plurality of air volume regulating valves 15. The air volume of the plurality of annular air pipes 13 can be freely adjusted through the air volume regulating valves 15, so as to adapt to the uneven heat energy distribution inside the water tank 3.

[0027] like Figure 2-3 As shown, a horizontal moving group is fixedly connected to the water tank 3, and the hard air pipe 10 is installed on the horizontal moving group, so that the horizontal moving group can drive the hard air pipe 10 to move and adjust the positions of multiple annular air pipes 13, and multiple thermal energy detectors 16 are installed on the water tank 3. When the thermal energy detector 16 detects the thermal energy data inside the water tank 3, it will be transmitted to the host. When the host detects that the thermal energy is unevenly distributed, it will automatically start the horizontal moving group to adjust the position of the hard air pipe 10, thereby adjusting the position of the annular air pipe 13, so that the air outlet 14 is located in the area with less heat energy inside the water tank 3.

[0028] Among them, Figure 2-3As shown, the horizontal moving group includes a guide rail body 9 fixedly connected to the inside of the water tank 3 and a servo motor 11 fixedly connected to the water tank 3. The hard air pipe 10 is slidably connected to the inside of the guide rail body 9. The output end of the servo motor 11 is fixedly connected to a threaded rod 12. The threaded rod 12 and the hard air pipe 10 are threadedly connected. At this time, starting the servo motor 11 can drive the threaded rod 12 to rotate. When the threaded rod 12 rotates, it will drive the hard air pipe 10 to move, and the position of the hard air pipe 10 can be adjusted. The adjustment method is relatively simple, and it can self-lock after the adjustment is completed.

[0029] The working principle of the utility model is: the heat energy released during the operation of the screw air compressor unit 1 will heat the gas energy inside the heat collecting cover 2. After the fan 6 is started, the heated gas inside the heat collecting cover 2 will be transported into the interior of the hard air pipe 10, and then transported to the air outlet nozzle 14 through the annular air pipe 13, and discharged through the opening of the air outlet nozzle 14 to heat the water inside the water tank 3. When the spiral part 5 contacts the water, the heat energy in the water will be transmitted to the medium inside the spiral part 5, thereby completing the recovery of heat energy and achieving the purpose of saving energy.

[0030] In summary, the technical solution can recover the heat energy released by the screw air compressor unit 1 during operation and evenly heat the water inside the water tank 3 through the structural arrangement of multiple annular air pipes 13 and air outlet nozzles 14, thereby achieving the purpose of evenly heating the medium inside the spiral part 5 and better exchanging the recovered heat energy.

[0031] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A screw air compressor energy-saving device, comprising a screw air compressor unit (1) and a water tank (3), wherein the outer side of the screw air compressor unit (1) is fixedly connected to a heat collecting cover (2), the interior of the water tank (3) is filled with water, a fan (6) is installed on the outer side of the heat collecting cover (2), an air guide group extending to the interior of the water tank (3) is installed on the fan (6), a heat exchange hollow pipe (4) is fixedly connected to the water tank (3), and an upper part of the water tank (3) is fixedly connected to a return air pipe (8) connected to the heat collecting cover (2), characterized in that: The air guide group comprises a hard air pipe (10) installed inside the water tank (3), a hose (7) connected to the fan (6) is fixedly connected to the hard air pipe (10), a plurality of annular air pipes (13) located outside the heat exchange hollow pipe (4) are fixedly connected to the hard air pipe (10), a plurality of air outlet nozzles (14) are fixedly connected to the inner side of the annular air pipe (13), the air outlet nozzles (14) are provided with openings connected to the annular air pipe (13), the total opening area of ​​the air outlet nozzles (14) on the same annular air pipe (13) is the total air outlet area, and the total air outlet area of ​​the annular air pipe (13) gradually increases from the end close to the hose (7) to the end away from the hose (7).

2. The energy-saving device for a screw air compressor according to claim 1, characterized in that: The portion of the heat exchange hollow tube (4) located inside the water tank (3) is the spiral portion (5).

3. The energy-saving device for a screw air compressor according to claim 1, characterized in that: The opening ranges of the plurality of air outlet nozzles (14) are gradually increased in the order from being close to the hard air tube (10) to being far away from the hard air tube (10).

4. The energy-saving device for a screw air compressor according to claim 1, characterized in that: A plurality of air volume regulating valves (15) are fixedly connected to the rigid air pipe (10), and the plurality of annular air pipes (13) are respectively connected to the rigid air pipe (10) via the plurality of air volume regulating valves (15).

5. The energy-saving device for a screw air compressor according to any one of claims 1 to 4, characterized in that: The water tank (3) is fixedly connected to a horizontal moving group, the hard air pipe (10) is installed on the horizontal moving group, and a plurality of thermal energy detectors (16) are mounted on the water tank (3).

6. The energy-saving device for a screw air compressor according to claim 5, characterized in that: The horizontal movement group comprises a guide rail body (9) fixedly connected to the inside of the water tank (3) and a servo motor (11) fixedly connected to the water tank (3); the hard air pipe (10) is slidably connected to the inside of the guide rail body (9); the output end of the servo motor (11) is fixedly connected to a threaded rod (12); and the threaded rod (12) and the hard air pipe (10) are threadedly connected.

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