Novel switchable impeller cooling fan for waste incineration plant

By introducing a switchable impeller and sensor system into the cooling fan of the waste incineration plant, the optimal impeller combination can be intelligently selected, solving the problem of poor impeller adaptability and achieving high-efficiency energy consumption balance and convenient equipment maintenance.

CN223881394UActive Publication Date: 2026-02-06NINGBO ZHONGKE GREEN ELECTRICITY CO LTD
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Patent Information

Application Number
CN202520791890.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-24
Publication Date
2026-02-06
Estimated Expiration
2035-04-24

AI Technical Summary

Technical Problem

The existing cooling fan impellers in waste incineration plants have poor adaptability and cannot meet the cooling requirements under different weather conditions, resulting in low operating efficiency, high energy consumption and severe equipment wear.

Method used

It adopts a switchable impeller cooling fan, equipped with a temperature sensor, humidity sensor and differential pressure transmitter. The central control module intelligently selects the optimal impeller combination and combines impellers with different tilt angles (30°, 38°, 45°) to adapt to complex working conditions and achieve a balance between air volume, air pressure and energy consumption.

Benefits of technology

This enables efficient operation of the cooling fan under different weather conditions, reduces energy consumption, extends equipment life, and lowers the cost of manual inspection.

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Abstract

The utility model relates to the technical field of air-cooled coolers, and discloses a novel switchable impeller cooling fan for a waste incineration plant, which comprises a mounting frame. According to the novel switchable impeller cooling fan for the waste incineration plant, temperature, humidity and pressure difference data can be analyzed in real time through the three impellers with different inclination angles in cooperation with the central control module, the optimal impeller combination can be intelligently selected, the air volume, the air pressure and the energy consumption are balanced, and the novel switchable impeller cooling fan is suitable for the complex working conditions of the waste incineration plant; the filter screen cleaning cycle or the part replacement requirement can be predicted by combining the pressure difference transmitter with temperature and humidity data, the manual inspection cost is reduced, the first impeller with the inclination angle of 30 degrees has low resistance and high air volume and is suitable for rapid heat dissipation, the second impeller with the inclination angle of 38 degrees balances air pressure and air volume and deals with conventional working conditions, and the third impeller with the inclination angle of 45 degrees has high air pressure and high air volume and is suitable for rapid heat dissipation. And the coating has strong penetrability and is suitable for high-temperature or high-resistance environments.
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Description

TECHNICAL FIELD

[0001] The application relates to the technical field of air-cooled coolers, in particular to a new garbage incineration plant switchable impeller cooling fan. BACKGROUND

[0002] At present, the cooling fan used in the garbage incineration plant usually adopts a fixed type of impeller, which cannot be flexibly adjusted according to different weather environments and cooling requirements, which leads to low running efficiency of the fan under certain weather conditions, large energy consumption, and increased wear and fatigue of the fan, thereby shortening the service life of the equipment.

[0003] The existing patent (announcement number: CN217210482U) discloses an energy-saving air-cooled cooler capable of automatic starting and stopping, and belongs to the technical field of air-cooled coolers. The air-cooled cooler comprises a shell, a heat exchanger arranged in the shell, a fan assembly arranged at one end of the shell, and a connecting part arranged at the left and right ends of the shell for connecting a hot air inlet pipeline and a hot air outlet pipeline. The fan assembly is electrically connected to a control box, and the control box comprises three temperature controllers, and each temperature controller is connected to a temperature monitor through a cable. The utility model has the advantages of simple control of the air-cooled cooler, independent control without interlocking with other equipment, easy improvement of the existing air-cooled cooler, automatic starting and stopping of the three fans according to actual requirements, and great saving of energy consumption.

[0004] Although the device in the above-mentioned comparative document realizes automatic starting and stopping of the fan, thereby saving energy consumption, it does not solve the problem of poor adaptability of the impeller. However, the cooling fan impeller has poor adaptability, and cannot meet the cooling requirements under different weather environments during use, does not have intelligent selection, and cannot ensure that the garbage incineration equipment can run well under various weather conditions. In order to solve the above-mentioned problems, a new garbage incineration plant switchable impeller cooling fan is proposed. TECHNICAL CONTENT

[0005] In view of the deficiencies of the prior art, the application provides a new garbage incineration plant switchable impeller cooling fan, which has the advantages of intelligent selection and solves the problems of poor adaptability of the cooling fan impeller, inability to meet the cooling requirements under different weather environments, and inability to ensure that the garbage incineration equipment can run well under various weather conditions.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a new garbage incineration plant switchable impeller cooling fan, comprising a mounting frame, a connecting frame fixedly connected inside the mounting frame, and three blow tubes fixedly connected inside the connecting frame.

[0007] Three said blow tube inside part is respectively installed with first mounting sleeve, second mounting sleeve and third mounting sleeve, first mounting sleeve, second mounting sleeve and third mounting sleeve surface is respectively fixedly connected with first impeller, second impeller and third impeller, the blade angle of first impeller is 30°, the blade angle of second impeller is 38°, the blade angle of third impeller is 45°, the top of installation frame is provided with central control module, the inside of central control module is provided with temperature sensor, humidity sensor and differential pressure transmitter, three said blow tube inside is fixedly connected with first fixed frame and second fixed frame, the inside of first fixed frame and second fixed frame is tightly nested with rotating rod through bearing, the side of first mounting sleeve, second mounting sleeve and third mounting sleeve is all threadedly connected with mounting bolt, first mounting sleeve, second mounting sleeve and third mounting sleeve are respectively installed and connected at one end of three rotating rods through mounting bolt, one end of mounting bolt is threadedly connected in rotating rod, the input end of three said blow tube is all installed and connected with barrier frame.

[0008] Through the above scheme, through the temperature sensor, the temperature change of the garbage incineration plant cooling fan system and the surrounding environment can be monitored in real time, through the humidity sensor, the flue gas humidity can be monitored in real time, the high temperature and high humidity working condition response is triggered, through the differential pressure transmitter, the pressure difference change in the cooling air duct can be monitored, through the three impellers with different inclination angles, and in cooperation with the central control module, the temperature, humidity and differential pressure data can be analyzed in real time, the optimal impeller combination can be selected intelligently, the air volume, air pressure and energy consumption can be balanced, the complex working conditions of the garbage incineration plant can be adapted, at the same time, through the differential pressure transmitter combined with the temperature and humidity data, the filter screen cleaning cycle or component replacement requirement can be predicted, the manual inspection cost is reduced, wherein the first impeller with 30° inclination angle has low resistance, high air volume, is suitable for rapid heat dissipation, the second impeller with 38° inclination angle balances the air pressure and air volume, and is suitable for conventional working conditions, the third impeller with 45° inclination angle has high air pressure and strong penetration, and is suitable for high temperature or high resistance environment, through the thread connection of the mounting bolt, the three mounting sleeves can be respectively installed at one end of the three rotating rods, the detachable fastening operation is provided, and the impeller can be replaced or maintained conveniently.

[0009] Further, one end of three said rotating rods is fixedly connected with a plurality of protrusions, the inside side surface of first mounting sleeve, second mounting sleeve and third mounting sleeve is provided with a plurality of grooves, and the protrusions are clamped in the grooves.

[0010] Through the above scheme, through the clamping of the protrusions in the grooves, the power transmission stability can be enhanced, and the impeller idling or dislocation is prevented.

[0011] Further, the side of the first fixed frame is fixedly connected with a first fixed shell, the surface of the blow tube is fixedly connected with a second fixed shell, and the inside side surface of the second fixed shell is fixedly connected with a rotating motor.

[0012] Through the above scheme, by setting the first fixed shell and the second fixed shell, the rotating motor and the transmission rod can be fixed respectively, and the motor can be isolated from the high-temperature environment to protect the transmission components from external impact.

[0013] Further, the rotating motor output end is fixedly connected with a transmission rod, one end of the transmission rod rotates through the surface of the blowing cylinder and the surface of the second fixed shell, and is fixedly connected with a first bevel gear, one end of the rotating rod is fixedly connected with a second bevel gear, and the first bevel gear and the second bevel gear are meshed with each other.

[0014] Through the above scheme, by setting the rotating motor, the rotating motor can drive the transmission rod and the first bevel gear to rotate, and through the meshing of the first bevel gear and the second bevel gear, the power direction can be converted to drive the rotating rod to rotate, so that the impeller can be rotated.

[0015] Further, the surfaces of the three blowing cylinders are fixedly connected with a plurality of fixed frames, the surface of the blocking frame is fixedly connected with a plurality of mounting blocks, and the mounting blocks are clamped in the fixed frames.

[0016] Through the above scheme, by clamping the mounting blocks in the fixed frames, the blocking frame can be quickly installed or disassembled, and the blocking frame can be conveniently cleaned or replaced.

[0017] Further, the inside of the mounting block is provided with a fixing hole, and the inside of the fixed frame is provided with a contraction groove.

[0018] Through the above scheme, by setting the contraction groove, a storage space can be provided for the fixing spring and the fixing block.

[0019] Further, the inside side surface of the contraction groove is fixedly connected with a fixing spring, one end of the fixing spring is fixedly connected with a push plate, the side surface of the push plate is fixedly connected with a fixing block, and the fixing block is clamped in the fixing hole.

[0020] Through the above scheme, by the fixing spring, the position of the fixing block can be locked, and people can pull the push plate to separate the fixing block from the fixing hole, so that people can complete the fixing or disassembly of the blocking frame without tools, and the maintenance efficiency is improved.

[0021] Further, the opposite two sides of the mounting frame are fixedly connected with two mounting ears.

[0022] Through the above scheme, by setting the mounting ears, a lifting or ground fixing interface can be provided to facilitate equipment transportation and installation.

[0023] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0024] The new garbage incineration plant switchable impeller cooling fan can monitor the temperature change of the garbage incineration plant cooling fan system and the surrounding environment in real time through the temperature sensor, can monitor the flue gas humidity in real time through the humidity sensor, can trigger the high-temperature and high-humidity working condition response, can monitor the pressure difference change in the cooling air duct through the differential pressure transmitter, can analyze the temperature, humidity and pressure difference data in real time through the three impellers with different inclination angles and the central control module, can intelligently select the optimal impeller combination, balance the air volume, air pressure and energy consumption, adapt to the complex working conditions of the garbage incineration plant, and predict the filter screen cleaning cycle or component replacement demand through the differential pressure transmitter combined with the temperature and humidity data, thereby reducing the artificial inspection cost. The first impeller with an inclination angle of 30° has low resistance, high air volume, is suitable for rapid heat dissipation, the second impeller with an inclination angle of 38° balances the air pressure and air volume and is suitable for conventional working conditions, and the third impeller with an inclination angle of 45° has high air pressure and strong penetration and is suitable for high-temperature or high-resistance environments. The three mounting sleeves are respectively mounted at one end of the three rotating rods through threaded connection of the mounting bolts, so that detachable fastening operation is provided, and the impellers are convenient to replace or maintain. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front view of the structure of the application.

[0026] Figure 2 It is a side view of the structure of the application.

[0027] Figure 3 It is a structure diagram of the side view of the application.

[0028] Figure 4 It is Figure 3 It is an enlarged structure diagram of A in the application.

[0029] Figure 5 It is Figure 2 It is an enlarged structure diagram of B in the application.

[0030] In the figure:

[0031] 1, mounting frame; 101, connecting frame; 102, central control module; 103, mounting ear;

[0032] 2, air blowing cylinder; 201, first fixed frame; 202, first fixed shell; 203, second fixed frame; 204, second fixed shell; 205, rotating motor; 206, transmission rod; 207, first bevel gear; 208, rotating rod; 209, second bevel gear; 2010, protrusion; 2011, fixed frame; 2012, contraction groove; 2013, fixed spring; 2014, push plate; 2015, fixed block;

[0033] 3. First mounting sleeve; 301. First impeller; 302. Groove; 303. Mounting bolt;

[0034] 4. Second mounting sleeve; 401. Second impeller;

[0035] 5. Third mounting sleeve; 501. Third impeller;

[0036] 6. Barrier frame; 601. Mounting block; 602. Fixing hole. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] Please see Figure 1 and Figure 2 In this embodiment, a new switchable impeller cooling fan for a waste incineration plant includes a mounting frame 1, a connecting frame 101 fixedly connected inside the mounting frame 1, and three blowers 2 fixedly connected inside the connecting frame 101.

[0039] Three blow cylinders 2 are respectively provided with first mounting sleeves 3, second mounting sleeves 4 and third mounting sleeves 5, the surfaces of the first mounting sleeves 3, the second mounting sleeves 4 and the third mounting sleeves 5 are respectively fixedly connected with first impellers 301, second impellers 401 and third impellers 501, the blade inclination angle of the first impellers 301 is 30°, the blade inclination angle of the second impellers 401 is 38°, and the blade inclination angle of the third impellers 501 is 45°, the top of the mounting frame 1 is provided with a central control module 102, the central control module 102 is internally provided with temperature sensors, humidity sensors and differential pressure transmitters, the first mounting sleeves 3, the second mounting sleeves 4 and the third mounting sleeves 5 are respectively installed and connected at one end of the three rotating rods 208 through the installation bolts 303, one end of the installation bolts 303 is threadedly connected in the rotating rods 208, the first mounting sleeves 3, the second mounting sleeves 4 and the third mounting sleeves 5 are respectively installed and connected at one end of the three rotating rods 208 through the installation bolts 303, one end of the installation bolts 303 is threadedly connected in the rotating rods 208, the input ends of the three blow cylinders 2 are respectively provided with barrier frames 6, through the temperature sensors, the temperature changes of the cooling fan system of the waste incineration plant and the surrounding environment can be monitored in real time, through the humidity sensors, the flue gas humidity can be monitored in real time, and the high-temperature and high-humidity working condition response is triggered, through the differential pressure transmitters, the pressure difference changes in the cooling air duct can be monitored, through the three impellers with different inclination angles and in cooperation with the central control module 102, the temperature, humidity and differential pressure data can be analyzed in real time, the optimal impeller combination can be intelligently selected, the air volume, air pressure and energy consumption can be balanced, and the complex working conditions of the waste incineration plant can be adapted, meanwhile, through the differential pressure transmitters combined with the temperature and humidity data, the filter screen cleaning cycle or the part replacement demand can be predicted, and the artificial inspection cost is reduced, wherein the first impeller 301 with the inclination angle of 30° has low resistance and high air volume, is suitable for rapid heat dissipation, the second impeller 401 with the inclination angle of 38° balances the air pressure and the air volume and is suitable for conventional working conditions, and the third impeller 501 with the inclination angle of 45° has high air pressure and strong penetration and is suitable for high-temperature or high-resistance environments, through the threaded connection of the installation bolts 303, the three mounting sleeves can be respectively installed at one end of the three rotating rods 208, a detachable fastening operation is provided, and the impellers can be replaced or maintained by people, one end of each of the three rotating rods 208 is fixedly connected with a plurality of protrusions 2010, the inner sides of the first mounting sleeves 3, the second mounting sleeves 4 and the third mounting sleeves 5 are respectively provided with a plurality of grooves 302, the protrusions 2010 are clamped in the grooves 302, and through the clamping of the protrusions 2010 in the grooves 302, the power transmission stability can be enhanced, and the impeller can be prevented from idling or dislocation.

[0040] Please refer to Figure 4The first fixed frame 201 is fixedly connected with a first fixed shell 202 on the side surface, the blowpipe 2 is fixedly connected with a second fixed shell 204 on the surface, the second fixed shell 204 is fixedly connected with a rotating motor 205 on the inner side surface, the first fixed shell 202 and the second fixed shell 204 are arranged, the rotating motor 205 and the transmission rod 206 can be fixed respectively, the motor can be isolated from the high-temperature environment, the transmission part is protected from external impact, the transmission rod 206 is fixedly connected with the rotating motor 205 at the output end, the transmission rod 206 is rotatably arranged through the surface of the blowpipe 2 and the surface of the second fixed shell 204, and is fixedly connected with a first bevel gear 207, a rotating rod 208 is fixedly connected with a second bevel gear 209 at one end, the first bevel gear 207 and the second bevel gear 209 are meshed with each other, the rotating motor 205 is arranged, the rotating motor 205 is operated, the transmission rod 206 and the first bevel gear 207 can be driven to rotate, the power direction can be converted through the meshing of the first bevel gear 207 and the second bevel gear 209, and the rotating rod 208 can be driven to rotate, so that the impeller can be rotated.

[0041] Please refer to Figure 2 and Figure 5 The surface of each blowpipe 2 is fixedly connected with a plurality of fixed frames 2011, the surface of the blocking frame 6 is fixedly connected with a plurality of mounting blocks 601, the mounting block 601 is clamped in the fixed frame 2011, the mounting block 601 is clamped in the fixed frame 2011, the blocking frame 6 can be quickly installed or disassembled, and the blocking frame 6 is convenient to clean or replace, the mounting block 601 is provided with a fixed hole 602, the fixed frame 2011 is provided with a contraction groove 2012, the contraction groove 2012 is provided, the fixed spring 2013 and the fixed block 2015 can provide a storage space, the fixed spring 2013 is fixedly connected with a push plate 2014 at one end, the push plate 2014 is fixedly connected with a fixed block 2015 on the side surface, the fixed block 2015 is clamped in the fixed hole 602, the position of the fixed block 2015 can be locked through the fixed spring 2013, people pull the push plate 2014, the fixed block 2015 can be separated from the fixed hole 602, so that people can complete the fixing or disassembly of the blocking frame 6 without tools, the maintenance efficiency is improved, and the installation frame 1 is fixedly connected with two mounting ears 103 on the opposite sides.

[0042] In this embodiment, the temperature sensor can monitor the temperature changes of the cooling fan system and the surrounding environment of the waste incineration plant in real time, the humidity sensor can monitor the flue gas humidity in real time, and the differential pressure transmitter can monitor the pressure difference changes in the cooling air duct. Through the three different angle impellers, combined with the central control module 102, the temperature, humidity and pressure difference data can be analyzed in real time, the optimal impeller combination can be selected intelligently, the air volume, air pressure and energy consumption can be balanced, and the complex working conditions of the waste incineration plant can be adapted. At the same time, the differential pressure transmitter combined with temperature and humidity data can predict the filter screen cleaning cycle or component replacement requirement, and reduce the cost of manual inspection. Among them, the first impeller 301 with a 30° inclination angle has low resistance and high air volume, and is suitable for rapid heat dissipation. The second impeller 401 with a 38° inclination angle balances the air pressure and air volume, and is suitable for normal working conditions. The third impeller 501 with a 45° inclination angle has high air pressure and strong penetration, and is suitable for high temperature or high resistance environment. By setting the threaded connection of the mounting bolt 303, the three mounting sleeves can be respectively installed at one end of the three rotating rods 208, providing detachable fastening operation, which is convenient for people to replace or maintain the impeller.

[0043] The working principle of the above embodiment is that in use, the central control module 102 can analyze the temperature, humidity and pressure difference data in real time. When the temperature is high, the third impeller 501 can be enabled to provide high air pressure to penetrate the hot gas flow. When the working condition is normal, the second impeller 401 can be used to balance the energy consumption and efficiency. At the same time, the three blow tubes 2 can be operated independently or simultaneously. In single mode, the second impeller 401 can be selected to cope with specific working conditions. In combination mode, multiple impellers can be operated cooperatively to enhance the cooling strength. For example, when the temperature and humidity are high, the first impeller 301 and the third impeller 501 are enabled at the same time, and then the central control module 102 can intelligently select the optimal impeller combination to balance the air volume, air pressure and energy consumption, and adapt to the complex working conditions of the waste incineration plant.

[0044] When the impeller needs to be replaced, the mounting sleeve at the current position can be loosened by the mounting bolt 303. The mounting sleeve at the current position can be quickly separated by using the clamping structure of the protrusion 2010 and the groove 302, and replaced with another inclination angle impeller.

[0045] People can pull the toggle plate 2014 to shrink the fixed spring 2013, so that the fixed block 2015 is separated from the fixed hole 602, and the blocking frame 6 can be removed for cleaning or replacement.

[0046] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the enclosed claims. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the application can be varied in a multitude of ways. Such alterations, many of which will be apparent to those skilled in the art, can be based on current technology, and as such, this application should not be limited to the particular embodiments described herein, but should be understood to include all embodiments that are within the scope of the appended claims and their equivalents.

[0047] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, which can be limited only by the scope of the appended claims and their equivalents.

Claims

1. A novel switchable impeller cooling fan for waste incineration plants, comprising a mounting frame (1), characterized in that: The mounting frame (1) is fixedly connected to a connecting frame (101), and three blowers (2) are fixedly connected to the connecting frame (101). The three blowers (2) are respectively equipped with a first mounting sleeve (3), a second mounting sleeve (4), and a third mounting sleeve (5). A first impeller (301), a second impeller (401), and a third impeller (501) are respectively fixedly connected to the surfaces of the first mounting sleeve (3), the second mounting sleeve (4), and the third mounting sleeve (5). The blade inclination angle of the first impeller (301) is 30°, the blade inclination angle of the second impeller (401) is 38°, and the blade inclination angle of the third impeller (501) is 45°. A central control module (102) is provided on the top of the mounting frame (1). The central control module (102) contains a temperature sensor, a humidity sensor, and a differential pressure transmitter. The blower (2) is fixedly connected to a first fixed frame (201) and a second fixed frame (203). The first fixed frame (201) and the second fixed frame (203) are tightly nested with rotating rods (208) through bearings. The first mounting sleeve (3), the second mounting sleeve (4) and the third mounting sleeve (5) are all threaded with mounting bolts (303). The first mounting sleeve (3), the second mounting sleeve (4) and the third mounting sleeve (5) are respectively installed and connected to one end of the three rotating rods (208) by mounting bolts (303). One end of the mounting bolt (303) is threaded into the rotating rod (208). The three blower (2) input ends are all installed with barrier frames (6).

2. A new type of switchable impeller cooling fan for waste incineration plants according to claim 1, characterized in that: Each of the three rotating rods (208) has a plurality of protrusions (2010) fixedly connected to one end. The inner sides of the first mounting sleeve (3), the second mounting sleeve (4) and the third mounting sleeve (5) are provided with a plurality of grooves (302), and the protrusions (2010) are engaged in the grooves (302).

3. A new type of switchable impeller cooling fan for waste incineration plants according to claim 1, characterized in that: The first fixing frame (201) is fixedly connected to the side of the first fixing shell (202), the blower (2) is fixedly connected to the surface of the second fixing shell (2), and the second fixing shell (204) is fixedly connected to the inside side of the second fixing shell (204). A rotary motor (205) is fixedly connected to the inside side of the second fixing shell (204).

4. A novel switchable impeller cooling fan for waste incineration plants according to claim 3, characterized in that: The output end of the rotary motor (205) is fixedly connected to a transmission rod (206). One end of the transmission rod (206) rotates through the surface of the blower (2) and the surface of the second fixed shell (204), and is fixedly connected to a first bevel gear (207). One end of the rotating rod (208) is fixedly connected to a second bevel gear (209). The first bevel gear (207) and the second bevel gear (209) mesh with each other.

5. A novel switchable impeller cooling fan for waste incineration plants according to claim 1, characterized in that: Each of the three blowers (2) has multiple fixed frames (2011) fixedly connected to its surface, and the barrier frame (6) has multiple mounting blocks (601) fixedly connected to its surface. The mounting blocks (601) are snapped into the fixed frames (2011).

6. A novel switchable impeller cooling fan for waste incineration plants according to claim 5, characterized in that: The mounting block (601) has a fixing hole (602) inside, and the fixing frame (2011) has a shrinkage groove (2012) inside.

7. A novel switchable impeller cooling fan for waste incineration plants according to claim 6, characterized in that: A fixing spring (2013) is fixedly connected to the inner side of the shrinkage groove (2012). A toggle plate (2014) is fixedly connected to one end of the fixing spring (2013). A fixing block (2015) is fixedly connected to the side of the toggle plate (2014). The fixing block (2015) is snapped into the fixing hole (602).

8. A novel switchable impeller cooling fan for waste incineration plants according to claim 1, characterized in that: The mounting frame (1) has two mounting ears (103) fixedly connected to each of its two opposite sides.

Citation Information

Patent Citations

  • Energy-saving air cooling cooler capable of being automatically started and stopped

    CN217210482U