Air heater with self-cleaning function

Abstract

The utility model discloses a hot-air blower with a self-cleaning function, which relates to the technical field of hot-air blowers and comprises a blower volute, a driving motor is fixedly mounted on the blower volute, a heater is connected onto the blower volute, an air outlet is arranged on the heater, a driving shaft is arranged at the output tail end of the driving motor, and an impeller is fixedly mounted on the driving shaft. A filter screen assembly is arranged on the fan volute and comprises a filter screen frame fixedly installed on the fan volute, a filter screen body is fixedly installed in the filter screen frame, an elastic steel sheet is fixedly installed on the filter screen frame, a cleaning mechanism is connected to the driving shaft, butt joint supporting feet are fixedly installed on the elastic steel sheet, and a driving strip is arranged on one side of the elastic steel sheet. A positioning clamping sleeve is fixedly installed on the driving strip, and a fixing bolt is connected to the positioning clamping sleeve. According to the air heater with the self-cleaning function, the filter screen assembly and the cleaning mechanism are used in cooperation, and dust on the filter screen of the air heater can be quickly and automatically cleaned.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot -blast machine technical field, concretely is a kind of hot -blast machine with self-cleaning function. BACKGROUND

[0002] Hot -blast machine is the first choice product of modern industry heat source upgrading, is widely used in hot -blast conveying furnace, drying furnace, oven, packaging machine and other automation machinery, as the best hot -blast source configuration. Hot -blast machine is mainly composed of blower, heater, control circuit three major parts, air is heated by electric heating wire, realizes the output of hot air. Its working principle is that blower sends air to heater, air is evenly passed from the inside and outside of spiral electric heating wire, the heat generated after electric heating wire is electrified exchanges with passing cold air, to make the wind temperature of air outlet increase.

[0003] In order to effectively prevent dust and impurities from entering the fan inside, ensure the normal operation and prolong the service life of fan, filter screen is usually specially designed and installed on fan volute. The role of these filter screens is to effectively filter the air entering the fan inside to remove dust and particulate matter. However, with the long-term operation of the fan, a large amount of dust will inevitably accumulate on the filter screen. When the dust accumulates to a certain extent, it will significantly reduce the air intake of the fan, because the pores of the filter screen are blocked, the air flow is blocked. If this condition is not handled in time, it will not only affect the efficiency of the fan, but also may cause the fan to overheat, even damage the mechanical parts inside the fan, thereby affecting the normal use of the fan. SUMMARY

[0004] The utility model aims at providing a kind of hot -blast machine with self-cleaning function to solve the problem that dust is easily accumulated on filter screen in prior art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of hot -blast machine with self-cleaning function, including fan volute, driving motor is fixedly installed on the fan volute, heater is connected on the fan volute, air outlet is equipped on the heater, driving shaft is equipped in the output end of driving motor, impeller is fixedly installed on the driving shaft, filter screen assembly is equipped on the fan volute, the filter screen assembly includes filter screen frame fixedly installed on the fan volute, filter screen body is fixedly installed in the filter screen frame, elastic steel sheet is fixedly installed on the filter screen frame, cleaning mechanism is connected on the driving shaft.

[0006] Preferably, the elastic steel sheet is fixedly installed with butt foot, the elastic steel sheet side is equipped with driving strip, the driving strip is fixedly installed with positioning sleeve, the positioning sleeve is connected with fixed bolt.

[0007] Preferably, the cleaning mechanism comprises a transmission shaft fixedly installed on the driving shaft, an electromagnetic clutch is arranged between the transmission shaft and the driving shaft, a planetary reducer is arranged on the transmission shaft, a positioning cap is fixedly installed at the end of the transmission shaft, a rotating frame body is fixedly installed on the positioning cap, and a cleaning brush is fixedly installed on the rotating frame body.

[0008] Preferably, the output end of the driving motor is provided with a shaft coupling, and the driving shaft is fixedly installed on the output end of the driving motor through the shaft coupling.

[0009] Preferably, the impeller is rotatably installed in the fan volute through the driving shaft, the elastic steel sheet is fixedly installed on the filter screen frame through the butt joint support leg, the positioning sleeve is fixedly installed on the transmission shaft through the fixing bolt, the driving strip is fixedly installed on the transmission shaft through the positioning sleeve, and the driving strip is rotatably installed on one side of the elastic steel sheet through the transmission shaft.

[0010] Preferably, a retainer is arranged in the fan volute, and the transmission shaft retainer is rotatably installed in the fan volute.

[0011] Preferably, the transmission shaft is connected to the driving shaft through the electromagnetic clutch, the transmission shaft is fixed on the positioning cap, the cleaning brush is rotatably installed in front of the filter screen body through the rotating frame body, and the end of the cleaning brush abuts against the surface of the filter screen body.

[0012] Compared with the prior art, the fan volute cleaning device has the following beneficial effects:

[0013] 1. The filter screen body in the application has the function of filtering air in the fan volute. In the slow rotation process of the transmission shaft, the driving strip rotates, thereby exerting pressure on one end of the elastic steel sheet, causing the elastic steel sheet to bend. When the elastic steel sheet bends to a certain threshold, it will be separated from the driving strip. Subsequently, the elastic steel sheet returns to the original position. High-frequency vibration is generated in this process. The high-frequency vibration of the elastic steel sheet can drive the filter screen body on the filter screen frame to vibrate, thereby promoting the rapid falling of dust on the filter screen body.

[0014] 2. In the application, when the driving shaft reversely rotates, the electromagnetic clutch is in the combined state. When the electromagnetic clutch is in the combined state, the driving shaft can drive the transmission shaft to slowly rotate. The slow rotation of the transmission shaft drives the rotating frame body to rotate at low speed. In this process, the rotating frame body promotes the cleaning brush to rotate tightly against the surface of the filter screen body, thereby realizing the self-cleaning function of the surface of the filter screen body. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the application;

[0016] Figure 2 It is a schematic diagram of the local structure of the application;

[0017] Figure 3 The utility model discloses a filter screen assembly schematic view;

[0018] Figure 4 The utility model discloses a filter screen assembly schematic view; Figure 3 The utility model discloses a filter screen assembly schematic view;

[0019] Figure 5 The utility model discloses a filter screen assembly schematic view;

[0020] The utility model discloses a filter screen assembly schematic view; Specific implementation

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0022] As shown in Figure 1 and Figure 2 The utility model provides a kind of technical scheme of hot air machine with self-cleaning function, including fan volute 2, driving motor 1 is fixedly installed on fan volute 2, heater 3 is connected on fan volute 2, air outlet 4 is equipped on heater 3, the output end of driving motor 1 is equipped with driving shaft 202, impeller 201 is fixedly installed on driving shaft 202, filter screen assembly 5 is equipped on fan volute 2, cleaning mechanism 6 is connected on driving shaft 202, by the cooperation of filter screen assembly 5 and cleaning mechanism 6, dust on fan filter screen can be automatically cleaned quickly.

[0023] As shown in Figure 2 and Figure 3As shown, the filter screen assembly 5 comprises a filter screen frame 501 fixedly installed on the fan volute 2, a filter screen body 502 fixedly installed in the filter screen frame 501, an elastic steel sheet 504 fixedly installed on the filter screen frame 501, a butt joint leg 503 fixedly installed on the elastic steel sheet 504, a driving bar 505 provided on one side of the elastic steel sheet 504, a positioning sleeve 506 fixedly installed on the driving bar 505, a fixing bolt 507 connected to the positioning sleeve 506, a coupling provided at the output end of the driving motor 1, a driving shaft 202 fixedly installed on the output end of the driving motor 1 through the coupling, and an impeller 201 rotatably installed in the fan volute 2 through the driving shaft 202.

[0024] Specifically, the filter screen body 502 has the function of effectively filtering the air entering the fan volute 2. In the process of slowly rotating the transmission shaft 601, it will drive the driving bar 505 to rotate. With the rotation of the driving bar 505, it will exert pressure on one end of the elastic steel sheet 504, causing the elastic steel sheet 504 to bend under stress. When the elastic steel sheet 504 bends to a certain extent, it will be separated from the driving bar 505. After separation, the elastic steel sheet 504 will automatically return to its original position, and in the process of resetting, the elastic steel sheet 504 will vibrate at a high frequency. The elastic steel sheet 504 vibrating at a high frequency will further drive the filter screen body 502 on the filter screen frame 501 to vibrate. Through this vibration, the dust on the filter screen body 502 can be quickly separated from its surface.

[0025] As shown in Figure 2 and Figure 4 , the cleaning mechanism 6 comprises a transmission shaft 601 fixedly installed on the driving shaft 202, an electromagnetic clutch 602 provided between the transmission shaft 601 and the driving shaft 202, a planetary reducer 603 provided on the transmission shaft 601, a positioning cap 604 fixedly installed at the end of the transmission shaft 601, a rotating frame body 605 fixedly installed on the positioning cap 604, a cleaning brush 606 fixedly installed on the rotating frame body 605, and a retainer provided in the fan volute 2, the transmission shaft 601 being rotatably installed in the fan volute 2 through the retainer.

[0026] Specifically, when the driving shaft 202 performs the action of reverse rotation, the electromagnetic clutch 602 enters the combined state. Once the electromagnetic clutch 602 is in the combined state, the driving shaft 202 can drive the transmission shaft 601 to rotate at a slow and stable speed. In the process of slowly rotating the transmission shaft 601, the rotating frame body 605 is further driven to rotate at the same slow pace. In the process of rotating, the rotating frame body 605 drives the cleaning brush 606 to rotate tightly against the surface of the filter screen body 502. Through this mechanism, the cleaning brush 606 can thoroughly self-clean the surface of the filter screen body 502, ensuring the cleanliness and filtering efficiency of the filter screen.

[0027] Working principle: through the driving motor 1 can drive impeller 501 in the fan volute 2 rotation, thereby generating airflow, the generated airflow after heating through the heater 3 will be discharged through the air outlet 4, filter screen body 502 can filter the air into the fan volute 2, at the same time can be driven by the driving motor 1 drive shaft 202 reverse rotation, drive shaft 202 reverse rotation after the electromagnetic clutch 602 can be controlled to be in the combined state, the drive shaft 202 can drive the transmission shaft 601 slowly rotate when the electromagnetic clutch 602 is in the combined state, transmission shaft 601 slowly rotates after it will drive the rotating frame body 605 slowly rotates, rotating frame body 605 slowly rotates in the process, it will drive the cleaning brush 606 rotate against the surface of filter screen body 502, so as to clean the surface of filter screen body 502, and transmission shaft 601 slowly rotates in the process will drive the drive bar 505 rotation, drive bar 505 rotation after it will press one end of the elastic steel sheet 504, make elastic steel sheet 504 bending under stress, elastic steel sheet 504 bends to a certain degree after will be separated from the drive bar 505, at this time, the elastic steel sheet 504 will reset, the elastic steel bar 504 reset process will high frequency vibration, high frequency vibration elastic steel bar 504 will drive the filter screen body 502 on the filter screen frame 501 vibration, make the dust on the filter screen body 502 quickly separate.

[0028] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Accordingly, the embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than by the above description, and it is intended to cover all changes and modifications of the application equivalent to those which are specifically set forth herein. Any reference signs in the claims should not be construed as limiting the claims.

Claims

1. A hot air blower with self-cleaning function, comprising a blower casing (2), a drive motor (1) fixedly mounted on the blower casing (2), a heater (3) connected to the blower casing (2), and an air outlet (4) provided on the heater (3), characterized in that: The output end of the driving motor (1) is provided with a driving shaft (202), the driving shaft (202) is fixedly installed with an impeller (201), the fan volute (2) is provided with a filter screen assembly (5), the filter screen assembly (5) comprises a filter screen frame (501) fixedly installed on the fan volute (2), the filter screen frame (501) is fixedly installed with a filter screen body (502), the filter screen frame (501) is fixedly installed with an elastic steel sheet (504), and the driving shaft (202) is connected with a cleaning mechanism (6).

2. The hot air machine with self-cleaning function according to claim 1, characterized in that: The elastic steel sheet (504) is fixedly installed with a butt foot (503), one side of the elastic steel sheet (504) is provided with a driving strip (505), the driving strip (505) is fixedly installed with a positioning sleeve (506), and the positioning sleeve (506) is connected with a fixing bolt (507).

3. The hot air machine with self-cleaning function according to claim 2, characterized in that: The cleaning mechanism (6) comprises a transmission shaft (601) fixedly installed on the driving shaft (202), an electromagnetic clutch (602) is arranged between the transmission shaft (601) and the driving shaft (202), the transmission shaft (601) is provided with a planetary reducer (603), the transmission shaft (601) is fixedly installed with a positioning cap (604), the positioning cap (604) is fixedly installed with a rotating frame body (605), and the rotating frame body (605) is fixedly installed with a cleaning brush (606).

4. The hot air machine with self-cleaning function according to claim 3, characterized in that: The output end of the driving motor (1) is provided with a shaft coupling, and the driving shaft (202) is fixedly installed on the output end of the driving motor (1) through the shaft coupling.

5. The hot air machine with self-cleaning function according to claim 4, characterized in that: The impeller (201) is rotatably installed in the fan volute (2) through the driving shaft (202), the elastic steel sheet (504) is fixedly installed on the filter screen frame (501) through the butt foot (503), the positioning sleeve (506) is fixedly installed on the transmission shaft (601) through the fixing bolt (507), the driving strip (505) is fixedly installed on the transmission shaft (601) through the positioning sleeve (506), and the driving strip (505) is rotatably installed on one side of the elastic steel sheet (504) through the transmission shaft (601).

6. The hot air machine with self-cleaning function according to claim 5, characterized in that: A retainer is arranged in the fan volute (2), and the transmission shaft (601) is rotatably installed in the fan volute (2) through the retainer.

7. The hot air machine with self-cleaning function according to claim 6, characterized in that: The transmission shaft (601) is connected to the driving shaft (202) through the electromagnetic clutch (602), the transmission shaft (601) is fixed to the positioning cap (604), the cleaning brush (606) is rotatably installed in front of the filter screen body (502) through the rotating frame body (605), and the end of the cleaning brush (606) abuts against the surface of the filter screen body (502).

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