Waste heat recovery device of pressure fan

Abstract

The utility model provides a waste heat recovery device of a pressure fan, which is simple in design structure, heat in a waste heat recovery pipe is conducted to the inside of a recovery box, waste heat recovery is realized, the waste heat recovery pipe is arranged in the recovery box in a curved manner, the heating area can be increased, the heat conduction efficiency is improved, and the waste heat recovery device of the pressure fan comprises a screw pressure fan, an air inlet pipe is arranged at the top of the screw pressure fan, a filter cover is in threaded connection with the outer side of the air inlet pipe, an air outlet is formed in the bottom side of the screw pressure fan, the position of the air outlet is communicated with a waste heat recovery pipe, a recovery box is fixedly connected to the bottom of the screw pressure fan, and four supporting legs are fixedly installed at the bottom of the recovery box. The waste heat recovery pipes are located on the inner wall of the bottom of the recovery box and distributed in a curved mode, outlets of the waste heat recovery pipes extend to the outer side of the recovery box, a supporting net is fixedly installed in the recovery box and is made of stainless steel metal materials, and a taking and placing hole is formed in the front face of the recovery box.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery for air compressors, and in particular to a waste heat recovery device for air compressors. Background Art

[0002] Screw compressor is a device that compresses air through the screw volume to achieve pressurization. It is mainly composed of the main engine, air intake filter, exhaust valve, oil filter, pressure gauge, etc. The working principle of the screw compressor is as follows:

[0003] 1. Intake: Air enters the main engine through the intake filter.

[0004] 2. Compression: Inside the main unit, two intermeshing screws rotate at high speed, compressing the air and reducing its volume.

[0005] 3. Exhaust: The compressed air is discharged out of the machine through the exhaust valve to form high-pressure gas.

[0006] 4. Lubrication: During the compression process, the screw needs to be lubricated to ensure the normal operation of the machine. The oil filter is used to filter impurities in the lubricating oil.

[0007] When using a screw compressor, a large amount of high-temperature gas will be generated, which contains a large amount of internal energy.

[0008] The existing device is equipped with a radiator, which dissipates heat through the radiator, resulting in energy waste.

[0009] In addition, some waste heat recovery devices have heat pipes fixed inside. If they are stored in the device for a long time, the high-temperature gas will cause water mist to adhere to the heat pipes and the gas with dust to be adsorbed on the surface of the heat pipes, which will lead to poor heat conduction and affect the service life of the screw compressor. For this reason, we propose a waste heat recovery device for screw compressors. Utility Model Content

[0010] In view of the defects existing in the prior art, the technical problem solved by the utility model is: to provide a waste heat recovery device for an air compressor.

[0011] In order to achieve the above objectives, the utility model provides:

[0012] The waste heat recovery device of the air compressor includes a screw air compressor, an air inlet pipe is arranged on the top of the screw air compressor, a filter cover is threadedly connected to the outer side of the air inlet pipe, an air outlet is arranged on the bottom side of the screw air compressor, a waste heat recovery pipe is connected to the position of the air outlet, a recovery box is fixedly connected to the bottom of the screw air compressor, four supporting legs are fixedly installed on the bottom of the recovery box, the waste heat recovery pipe is located on the bottom inner wall of the recovery box and is arranged in a curved shape, the outlet of the waste heat recovery pipe extends to the outside of the recovery box, a supporting net is fixedly installed in the recovery box, the supporting net is made of stainless steel metal material, a pick-up and release hole is arranged on the front of the recovery box, the pick-up and release hole is located on the outside of the support net and two box covers are rotatably installed, and handles are arranged on the two box covers; magnets can be arranged on the inner sides of the two box covers to attract the recovery box and improve stability.

[0013] Preferably, a hot water discharge pipe is provided on the front of the recovery tank for discharging liquid.

[0014] Preferably, a water inlet is provided on the top of the recovery box, and an exhaust hole is provided on the top of the recovery box; the exhaust hole is used to discharge the gas in the recovery box.

[0015] Preferably, the right lower part of the recovery box is connected to a graduated tube, and the graduated tube is located below the supporting net. The graduated tube is used to observe the liquid inside the recovery box, which can avoid the height of the added liquid being higher than the supporting net.

[0016] Preferably, a protective shell is fixedly installed on the top inner wall of the recovery box, the protective shell is fixedly installed on the top of the support net, and the upper part of the waste heat recovery pipe is located on the inner side of the protective shell; the protective shell is provided to protect the waste heat recovery pipe to prevent solids from colliding with the waste heat recovery pipe.

[0017] Preferably, the inner wall of the filter cover is provided with a plurality of filter holes, and a filter screen is arranged on the inner side of the filter cover; the filter screen is used to filter impurities and dust in the air.

[0018] Compared with the prior art, the advantages of the utility model are:

[0019] 1. Add the liquid to be heated into the recovery box through the water inlet, and observe the liquid level through the graduated tube so that the liquid level is below the support net. The air inside the waste heat recovery pipe will generate heat after compression and transfer it to the liquid to be heated, so as to realize waste heat recovery. The curved arrangement inside the recovery box can increase the heating area and improve the efficiency of heat conduction.

[0020] 2. Place solid parts on the top of the support net and use the waste heat recovery pipe to transfer heat to the inside of the recovery box to heat the solid parts and realize waste heat recovery;

[0021] The utility model has a simple structure. The heat inside the waste heat recovery pipe is transferred to the inside of the recovery box to realize waste heat recovery and utilization. The curved arrangement of the waste heat recovery pipe inside the recovery box can increase the heating area and improve the efficiency of heat conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the main structure diagram of this design;

[0023] Figure 2 Designed for this Figure 1 Schematic diagram of the structure viewed from above;

[0024] Figure 3 This is the structural diagram of the recovery box and screw compressor in this design;

[0025] Figure 4 This is a three-dimensional structural diagram of the filter cover and filter screen in this design;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the waste heat recovery pipe in this design.

[0027] In the figure: 1. screw compressor; 11. air inlet pipe; 12. filter cover; 13. filter hole; 14. filter net; 2. recovery box; 21. water inlet; 22. support leg; 23. hot water discharge pipe; 24. box cover; 25. handle; 26. exhaust hole; 3. waste heat recovery pipe; 31. protective shell; 4. support net; 5. graduation tube. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0029] See also Figure 1-5 As shown, the air compressor waste heat recovery device includes a screw air compressor 1, an air inlet pipe 11 is arranged on the top of the screw air compressor 1, and a filter cover 12 is threadedly connected to the outer side of the air inlet pipe 11, an air outlet is arranged on the bottom side of the screw air compressor 1, and a waste heat recovery pipe 3 is connected to the position of the air outlet, and a recovery box 2 is fixedly connected to the bottom of the screw air compressor 1, and four supporting legs 22 are fixedly installed on the bottom of the recovery box 2, the waste heat recovery pipe 3 is located on the bottom inner wall of the recovery box 2 and is arranged in a curved shape, and the outlet of the waste heat recovery pipe 3 extends to the outside of the recovery box 2, and a support net 4 is fixedly installed in the recovery box 2, and the support net 4 is made of stainless steel metal material, and a pick-up and release hole is arranged on the front of the recovery box 2, and the pick-up and release hole is located on the outer side of the support net 4 and is rotatably installed with two box covers 24, and handles 25 are provided on the two box covers 24; magnets can be arranged on the inner sides of the two box covers 24, and the recovery box 2 is attracted by the magnets to improve stability.

[0030] In this embodiment, a hot water discharge pipe 23 is provided on the front of the recovery box 2 for discharging liquid, a water inlet 21 is provided on the top of the recovery box 2, and an exhaust hole 26 is provided on the top of the recovery box 2; the exhaust hole 26 is used to discharge the gas in the recovery box 2.

[0031] In this embodiment, the lower right corner of the recovery box 2 is connected to a graduated tube 5, and the graduated tube 5 is located horizontally below the support net 4; the graduated tube 5 is used to observe the liquid inside the recovery box 2, which can avoid the added liquid being higher than the support net 4.

[0032] In this embodiment, a protective shell 31 is fixedly installed on the top inner wall of the recovery box 2, the protective shell 31 is fixedly installed on the top of the support net 4, and the upper part of the waste heat recovery pipe 3 is located on the inner side of the protective shell 31; the protective shell 31 is set to protect the waste heat recovery pipe 3 to prevent the waste heat recovery pipe 3 from being collided with by placed solids.

[0033] In this embodiment, a plurality of filter holes 13 are formed on the inner wall of the filter cover 12 , and a filter screen 14 is disposed on the inner side of the filter cover 12 ; the filter screen 14 is used to filter impurities and dust in the air.

[0034] Working principle: When in use, the screw compressor 1 works, the outside air enters the interior through the air inlet pipe 11, and then is discharged through the waste heat recovery pipe 3. The liquid that needs to be heated is added to the recovery box 2 through the water inlet 21. The liquid level is observed through the graduated tube 5 so that the liquid level is below the support net 4. The air inside the waste heat recovery pipe 3 will generate heat after compression and transfer it to the liquid that needs to be heated, thereby realizing waste heat recovery and utilization. The curved arrangement inside the recovery box 2 can increase the heating area and improve the efficiency of heat conduction.

[0035] In this embodiment, there is another way to recover waste heat. The liquid inside the recovery box 2 is discharged, the two box covers 24 are opened, and solid parts are placed on the top of the support net 4. The waste heat recovery pipe 3 is used to conduct heat to the inside of the recovery box 2, so that the solid parts can be heated to achieve waste heat recovery.

[0036] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to the present invention is within the scope of protection.

Claims

1. A compressor waste heat recovery device, comprising a screw compressor (1), wherein an air inlet pipe (11) is arranged at the top of the screw compressor (1), and wherein: The outer side of the air inlet pipe (11) is threadedly connected to a filter cover (12); an air outlet is arranged on the bottom side of the screw air compressor (1); a waste heat recovery pipe (3) is connected to the air outlet; a recovery box (2) is fixedly connected to the bottom of the screw air compressor (1); four support legs (22) are fixedly installed on the bottom of the recovery box (2); the waste heat recovery pipe (3) is located on the inner wall of the bottom of the recovery box (2) and arranged in a curved shape; the outlet of the waste heat recovery pipe (3) extends to the outside of the recovery box (2); a support net (4) is fixedly installed in the recovery box (2); a take-in and put-out hole is arranged on the front side of the recovery box (2); the take-in and put-out hole is located on the outside of the support net (4) and two box covers (24) are rotatably installed; and handles (25) are provided on both box covers (24).

2. The air compressor waste heat recovery device according to claim 1, characterized in that: A hot water discharge pipe (23) is provided on the front side of the recovery box (2).

3. The air compressor waste heat recovery device according to claim 1, characterized in that: The top of the recovery box (2) is provided with a water inlet (21), and the top of the recovery box (2) is provided with an exhaust hole (26).

4. The air compressor waste heat recovery device according to claim 1, characterized in that: The right lower part of the recovery box (2) is connected to a graduated tube (5), and the graduated tube (5) is located at a level below the supporting net (4).

5. The air compressor waste heat recovery device according to claim 1, characterized in that: A protective shell (31) is fixedly mounted on the top inner wall of the recovery box (2), the protective shell (31) is fixedly mounted on the top of the support net (4), and the upper part of the waste heat recovery pipe (3) is located on the inner side of the protective shell (31).

6. The air compressor waste heat recovery device according to claim 1, characterized in that: The inner wall of the filter cover (12) is provided with a plurality of filter holes (13), and a filter net (14) is arranged on the inner side of the filter cover (12).

7. The air compressor waste heat recovery device according to claim 1, characterized in that: The supporting net (4) is made of stainless steel metal material.

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