Low-temperature waste heat power generation heat exchange device

Abstract

The utility model discloses a low-temperature waste heat power generation heat exchange device, which relates to the technical field of low-temperature power generation heat exchange equipment and comprises a treatment box, an evaporator, a screw expander, a generator, an evaporative condenser and a heat exchange component are arranged in the treatment box, the heat exchange component comprises an air inlet pipe and an air guide pipe, the air inlet pipe is connected to the side wall of the air guide pipe, and the screw expander is connected to the side wall of the air guide pipe. A filter screen plate for filtering hot air is arranged in the air guide pipe, a cleaning component is further arranged in the air guide pipe and comprises a rotary disc, the rotary disc is driven by an external servo motor, an eccentric rod is hinged to the surface of the rotary disc, and a push rod is hinged to the other end of the eccentric rod, penetrates through the air guide pipe and extends into the air guide pipe. A scraping ring is arranged at the end, located in the air guide pipe, of the push rod. According to the heat exchange device, through the heat exchange part and the cleaning part used in cooperation with the heat exchange part, treated hot air can be filtered, meanwhile, the filter screen plate and the inner wall of the air guide pipe can be cleaned, and the blocking situation in the using process is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of low-temperature power generation and heat exchange equipment, in particular to a low-temperature waste heat power generation and heat exchange device. Background Art

[0002] Low-temperature waste heat power generation unit is a device that converts low-grade thermal energy with a temperature of about 150°C into high-grade electrical energy. It is used to solve the problem of direct waste heat discharge in the chemical, petrochemical and other industries. However, due to different process routes, the heat source forms are diverse and often cannot be mixed to avoid affecting normal process production.

[0003] Through patent search, it is found that there are the following known prior art solutions:

[0004] A Chinese patent with authorization announcement number CN206694085U discloses a low-temperature waste heat power generation device for dual fluids, including an evaporator, a screw expander, a generator, an evaporative condenser, and a working fluid pump; however, the heat exchange tubes used therein are arranged in a shell-and-tube manner, and impurities in the low-temperature fluid will precipitate and clog the heat exchange tubes after long-term use, making cleaning very difficult. Summary of the invention

[0005] The purpose of the utility model is to solve the above-mentioned problems and to propose a low-temperature waste heat power generation heat exchange device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A low-temperature waste heat power generation and heat exchange device comprises a processing box, wherein an evaporator, a screw expander, a generator, an evaporative condenser and a heat exchange component are arranged inside the processing box, wherein the heat exchange component comprises an air inlet pipe and an air duct, wherein one end of the air duct is sealed, the air inlet pipe is connected to the side wall of the air duct, a filter screen for filtering hot air is arranged inside the air duct, and a cleaning component is also arranged inside the air duct.

[0008] As a further description of the above technical solution:

[0009] The cleaning component includes a turntable arranged on the outside of the air duct, which is driven by an external servo motor. An eccentric rod is hinged on the surface of the turntable, and a push rod is hinged on the other end of the eccentric rod. The push rod passes through the air duct and extends into the interior thereof. A scraper ring is provided at one end of the push rod located inside the air duct.

[0010] As a further description of the above technical solution:

[0011] The push rod is also provided with a scraping assembly for cleaning the surface of the filter screen plate. The scraping assembly includes a rotating drum arranged in the middle of the filter screen plate and a push rod arranged at one end of the push rod. The push rod is used in conjunction with the rotating drum, and a plurality of scraping rods are distributed circumferentially on the surface of the rotating drum.

[0012] As a further description of the above technical solution:

[0013] A spiral groove is provided inside the rotating drum, and a spiral convex block matching the spiral groove is provided on the surface of the push rod.

[0014] As a further description of the above technical solution:

[0015] A notch is provided at one end of the push rod close to the filter screen plate, the push rod is slidably arranged in the notch, and a spring is arranged between the push rod and the inside of the notch.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] In the utility model, the heat exchange component and the cleaning component used in conjunction can filter the processed hot air, and at the same time can clean the filter plate and the inner wall of the air guide pipe to prevent blockage during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure schematic diagram provided by the utility model is shown;

[0019] Figure 2 A schematic diagram of the structure of a heat exchange component provided by the utility model is shown;

[0020] Figure 3 The utility model provides Figure 2 Schematic diagram of the local structure.

[0021] Legend: 1. Processing box; 2. Air duct; 3. Inlet pipe; 4. Filter screen; 5. Turntable; 6. Eccentric rod; 7. Push rod; 8. Scraper ring; 9. Push rod; 10. Rotating drum; 11. Scraper rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3The utility model provides a technical solution: a low-temperature waste heat power generation and heat exchange device, including a processing box 1, wherein an evaporator, a screw expander, a generator, an evaporative condenser and a heat exchange component are arranged inside the processing box 1, and the heat exchange component includes an air intake pipe 3 and an air guide pipe 2, wherein one end of the air guide pipe 2 is sealed, and the air intake pipe 3 is connected to the side wall of the air guide pipe 2, and a filter screen plate 4 for filtering hot air is arranged inside the air guide pipe 2, and a cleaning component is also arranged inside the air guide pipe 2.

[0024] The cleaning component includes a rotating disk 5 arranged on the outside of the air duct 2, the rotating disk 5 is driven by an external servo motor, an eccentric rod 6 is hinged on the surface of the rotating disk 5, a push rod 7 is hinged on the other end of the eccentric rod 6, the push rod 7 penetrates the air duct 2 and extends to the inside thereof, a scraping ring 8 is provided at one end of the push rod 7 located inside the air duct 2, wherein the scraping ring 8 is in contact with the inner wall of the air duct 2, and a fluff brush is glued and fixed to the outer wall of the scraping ring 8, which can clean the inner wall of the air duct 2 during the reciprocating movement to prevent impurities from adhering, and a guide outlet is also provided at the bottom of the air duct 2, and a collection box is screwed on the guide outlet through a thread to collect the cleaned impurities;

[0025] The push rod 7 is also provided with a scraping assembly for cleaning the surface of the filter screen plate 4, and the scraping assembly includes a rotating drum 10 arranged in the middle of the filter screen plate 4 and a push rod 9 arranged at one end of the push rod 7. The push rod 9 is used in conjunction with the rotating drum 10, and a plurality of scraping rods 11 are distributed circumferentially on the surface of the rotating drum 10.

[0026] A spiral groove is provided inside the drum 10, and a spiral protrusion matched with the spiral groove is provided on the surface of the push rod 9. When the push rod 7 moves, the push rod 9 at one end of the push rod 7 will abut against the drum 10, and the spiral protrusion will dock with the spiral groove, thereby pushing the drum 10 to rotate. During the rotation of the drum 10, the scraper rod 11 will be driven to rotate, thereby cleaning the surface of the filter screen plate 4.

[0027] A slot is provided at one end of the push rod 7 close to the filter screen plate 4, and the push rod 9 is slidably arranged in the slot, and a spring is provided between the push rod 9 and the inside of the slot. The spring can have a buffering effect on the abutment between the push rod 9 and the drum 10 to avoid a rigid collision between the push rod 9 and the drum 10, and at the same time can also allow the push rod 9 to have a certain vibration, thereby generating vibration on the filter screen plate 4, thereby assisting in cleaning.

[0028] Working principle: When in use, start the external servo motor, the external servo motor drives the turntable 5 to rotate, and then the turntable 5 uses the eccentric rod 6 to push the push rod 7 to move back and forth. During the reciprocating movement of the push rod 7, it will drive the scraper ring 8 to move, thereby scraping and cleaning the inner wall of the air duct 2. At the same time, the push rod 9 will abut against the rotating drum 10, and then use the cooperation of the spiral protrusion and the spiral groove to make the rotating drum 10 rotate, and then the rotating drum 10 drives the scraper rod 11 to clean the surface of the filter screen plate 4 to prevent the filter screen plate 4 from being blocked.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-temperature waste heat power generation and heat exchange device, comprising a processing box (1), wherein an evaporator, a screw expander, a generator, an evaporative condenser and a heat exchange component are arranged inside the processing box (1), characterized in that: The heat exchange component comprises an air intake pipe (3) and an air guide pipe (2); one end of the air guide pipe (2) is sealed; the air intake pipe (3) is connected to a side wall of the air guide pipe (2); a filter screen (4) for filtering hot air is provided inside the air guide pipe (2); and a cleaning component is also provided inside the air guide pipe (2).

2. A low-temperature waste heat power generation and heat exchange device according to claim 1, characterized in that: The cleaning component comprises a rotating disk (5) arranged outside the air duct (2), the rotating disk (5) being driven by an external servo motor, an eccentric rod (6) being hinged on the surface of the rotating disk (5), a push rod (7) being hinged on the other end of the eccentric rod (6), the push rod (7) passing through the air duct (2) and extending into the interior thereof, and a scraper ring (8) being provided at one end of the push rod (7) located inside the air duct (2).

3. A low-temperature waste heat power generation and heat exchange device according to claim 2, characterized in that: The push rod (7) is also provided with a scraping assembly for cleaning the surface of the filter screen plate (4), the scraping assembly comprising a rotating drum (10) arranged in the middle of the filter screen plate (4) and a push rod (9) arranged at one end of the push rod (7), the push rod (9) being used in conjunction with the rotating drum (10), and a plurality of scraping rods (11) being distributed circumferentially on the surface of the rotating drum (10).

4. A low-temperature waste heat power generation and heat exchange device according to claim 3, characterized in that: A spiral groove is provided inside the rotating drum (10), and a spiral convex block matching the spiral groove is provided on the surface of the push rod (9).

5. A low-temperature waste heat power generation and heat exchange device according to claim 4, characterized in that: A notch is provided at one end of the push rod (7) close to the filter screen plate (4), the push rod (9) is slidably arranged in the notch, and a spring is provided between the push rod (9) and the inside of the notch.

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