High-pressure airtight two-stage efficient food-grade fan

Abstract

The utility model relates to the field of fan equipment, in particular to a high-pressure airtight two-stage efficient food-grade fan which comprises a base, a motor, a fan shell and an impeller, a channel steel bottom frame is arranged at the bottom of the base, the motor is fixedly installed on the base, the fan shell is fixedly installed at one end of the base, an outlet is formed in the top end of the fan shell, and an inlet is formed in one side of the fan shell. A first-stage air cavity and a second-stage air cavity are formed in the fan shell, an outlet is communicated with the first-stage air cavity and the second-stage air cavity, a partition plate is arranged between the first-stage air cavity and the second-stage air cavity, and the two-stage compression design is that through the two-stage compression design of the first-stage small impeller and the second-stage large impeller, the compression efficiency of the fan is remarkably improved; and air flow optimization: the guide blades on the back of the first-stage small impeller are beneficial to optimizing the air flow and further improving the efficiency of the fan, and multi-branch cleaning: the water guide pipeline is provided with two branches which are respectively communicated with the side and the top of the fan shell, so that the cleaning water is ensured to uniformly cover the interior of the air cavity, and the cleaning effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan equipment field, concretely for high pressure air -tight two -stage high -efficient food -grade fan. BACKGROUND

[0002] Fan as an important gas delivery equipment, is widely used in each field. Its working principle is to use motor or other driving equipment to drive impeller rotation, converts the input mechanical energy into gas pressure energy, thereby overcomes the resistance of pipeline or equipment and carries out gas delivery. The main performance parameters of fan include flow, pressure, power and efficiency, wherein efficiency is an important index for measuring fan performance, and is usually calculated through formula efficiency=k*flow*pressure / power (k is constant).

[0003] Under normal working condition, the design of single-stage impeller can usually meet the demand. However, under certain specific working conditions, such as high pressure environment in food processing industry, very small flow is required while very high pressure is required. In this case, the design of single-stage impeller encounters challenges. Because the flow and pressure ratio of single-stage impeller has a minimum value, in order to meet the demand of high pressure, the traditional method is to increase the size of fan impeller or to increase the speed, but this will also cause the increase of flow and power, thereby causing the waste of energy. SUMMARY

[0004] (I) technical problems solved

[0005] In view of the deficiencies of the prior art, the utility model provides high pressure air -tight two -stage high -efficient food -grade fan.

[0006] (II) technical scheme

[0007] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: the utility model discloses high pressure air -tight two -stage high -efficient food -grade fan, including base, motor, fan shell and impeller, the bottom of base is equipped with channel steel chassis, the motor is fixedly installed on the base, the fan shell is fixedly installed at one end of base, the top of fan shell is equipped with the outlet, one side of fan shell is equipped with the import, the inside of fan shell is equipped with primary air chamber and secondary air chamber, and the outlet is communicated with primary air chamber and secondary air chamber, the baffle is equipped with the air vent on the baffle, the bearing seat is installed on the base, the bearing seat is located between motor and fan shell, the bearing seat is rotatably installed with the shaft, the shaft penetrates fan shell and air vent and extends into primary air chamber and secondary air chamber, the impeller is installed on the shaft, the impeller includes primary small impeller and secondary large impeller, and the primary small impeller is located in primary air chamber, the secondary large impeller is located in secondary air chamber, the back of primary small impeller is equipped with the guide vane, and the output end of motor is connected with the shaft through the shaft coupling.

[0008] Preferably, it further comprises a cleaning mechanism, the cleaning mechanism comprises a pressure water storage tank, the pressure water storage tank is installed on the base, the pressure water storage tank is provided with a water inlet pipe and a water guide pipe, the water guide pipe is provided with two branches, and the water guide pipe is communicated with the primary air cavity and the secondary air cavity, the end of the water guide pipe is provided with a cleaning nozzle, the water guide pipe is provided with a ball valve, and the bottom of the fan shell is provided with a primary drain pipe and a secondary drain pipe, the primary drain pipe is communicated with the primary air cavity, and the secondary drain pipe is communicated with the secondary air cavity.

[0009] Further preferably, the two branches of the water guide pipe are respectively communicated with the side of the fan shell and the top of the fan shell.

[0010] More preferably, the outlet is provided with an outlet flange, the inlet is provided with an inlet flange, the outlet flange is installed with an outlet expansion joint, and the inlet flange is installed with an inlet expansion joint.

[0011] Preferably, the inlet is installed with a primary flow collector, the primary flow collector is communicated with the primary air cavity, and the air vent is installed with a secondary flow collector, and the secondary flow collector is communicated with the primary air cavity and the secondary air cavity.

[0012] Further preferably, the front side of the fan shell is installed with a cotton wrapping, and the cotton wrapping is located at the inlet.

[0013] More preferably, the bearing seat is installed with a vibration sensor and a temperature sensor, and the base is installed with a junction box, and the junction box is electrically connected with the motor, the vibration sensor, the temperature sensor and the ball valve.

[0014] Preferably, the rear side of the fan shell is provided with an access door.

[0015] Further preferably, the penetration part of the rotating shaft and the fan shell is provided with a sealing bearing, and the outer side of the shaft coupling is provided with a protective cover.

[0016] More preferably, the bottom of the low-profile channel steel is provided with a damping leg.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the utility model provides high pressure air -tight two -stage high -efficient food -grade fan, possesses following beneficial effect:

[0019] High efficiency compression:

[0020] Two-stage compression design: through the two-stage compression design of primary small impeller and secondary large impeller, the compression efficiency of the fan is significantly improved.

[0021] Airflow optimization: The guide vanes on the back of the first-stage impeller help optimize the airflow and further improve the fan efficiency.

[0022] Good airtightness:

[0023] Partition and vents: The vent design on the partition ensures smooth flow of air from the primary air cavity to the secondary air cavity, improving air tightness.

[0024] Sealed bearing: A sealed bearing is installed at the penetration point between the rotating shaft and the fan housing to prevent air leakage and dust intrusion, ensuring the air tightness of the fan.

[0025] Easy to clean:

[0026] Cleaning mechanism: The cleaning water provided by the pressure water storage tank is transported to the primary air cavity and the secondary air cavity through the water pipe. The cleaning nozzle cleans the inside of the air cavity. The waste water after cleaning is discharged through the drain pipe to keep the inside of the fan clean.

[0027] Multi-branch cleaning: The water guide pipe is equipped with two branches, which are connected to the side and top of the fan casing respectively, ensuring that the cleaning water evenly covers the inside of the air cavity and improving the cleaning effect.

[0028] Reduce vibration and noise:

[0029] Flanges and expansion joints: The outlet and inlet are equipped with flanges and expansion joints to connect pipes and reduce vibration.

[0030] Shock-absorbing feet: Shock-absorbing feet are provided at the bottom of the channel steel chassis to reduce vibration during fan operation and improve stability and comfort.

[0031] Cotton packing: Cotton packing is installed on the front side of the fan casing to reduce noise and keep warm, thereby improving the fan's quietness and efficiency.

[0032] Enhanced maintainability:

[0033] Inspection door: An inspection door is provided on the rear side of the fan casing for easy maintenance and inspection.

[0034] Sensors and junction boxes: Vibration sensors and temperature sensors are installed on the bearing seat, and a junction box is installed on the base to monitor the operating status in real time and ensure the safe operation of the fan.

[0035] Protection device: A protective cover is installed on the outside of the coupling to prevent foreign matter from entering and protect the normal operation of the equipment.

[0036] Improve motor life:

[0037] Motor forced cooling fan: A motor forced cooling fan is configured at the rear end of the motor to effectively reduce the motor operating temperature, increase the motor service life and the overall performance of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0039] Figure 2 This is a side view of the structure of the utility model;

[0040] Figure 3 This is a rear view structural diagram of the utility model;

[0041] Figure 4 This is a front structural diagram of the utility model;

[0042] In the figure: 1. Inlet expansion joint; 2. Inlet flange; 3. First-stage collector; 4. Cotton packing; 5. First-stage small impeller; 6. First-stage air cavity; 7. Second-stage air cavity; 8. Second-stage collector; 9. Second-stage large impeller; 10. Sealed bearing; 11. Bearing seat; 12. Rotating shaft; 13. Vibration sensor; 14. Protective cover; 15. Coupling; 16. Motor; 17. Base; 18. Channel steel base frame; 19. Shock-absorbing support foot; 20. Second-stage drain pipe; 21. First-stage drain pipe; 22. Junction box; 23. Inspection door; 24. Outlet flange; 25. Outlet expansion joint; 26. Temperature sensor; 27. Ball valve; 28. Water guide pipe; 29. ​​Motor forced cooling fan; 30. Pressure water storage tank. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] See also Figures 1-4The utility model discloses a high pressure air -tight two -stage high -efficient food -grade fan, including base 17, motor 16, fan shell and impeller, the bottom of base 17 is equipped with channel steel chassis 18, motor 16 is fixedly installed on base 17, the one end of fan shell is fixedly installed on base 17, the top of fan shell is equipped with the export, one side of fan shell is equipped with the import, the inside of fan shell is equipped with primary wind chamber 6 and secondary wind chamber 7, with export and primary wind chamber 6 and secondary wind chamber 7 are linked together, the baffle is equipped with the air vent on primary wind chamber 6 and secondary wind chamber 7 between the baffle, bearing seat 11 is installed on base 17, bearing seat 11 is located between motor 16 and fan shell, bearing seat 11 is rotatably installed with the shaft 12, the shaft 12 is through fan shell and air vent and extends into primary wind chamber 6 and secondary wind chamber 7, the impeller is installed on the shaft 12, the impeller includes primary small impeller 5 and secondary large impeller 9, with primary small impeller 5 is located in primary wind chamber 6, secondary large impeller 9 is located in secondary wind chamber 7, the back of primary small impeller 5 is equipped with guide vane, the output of motor 16 is connected with the shaft 12 through the shaft coupling 15.

[0045] The working principle of the tunnel settlement-reducing pile structure

[0046] Overall structure:

[0047] Base 17: base 17 is the basic support of the fan, and the bottom is provided with a channel steel chassis 18 for enhancing stability.

[0048] Motor 16: motor 16 is fixedly installed on base 17 for providing power.

[0049] Fan shell: the fan shell is fixedly installed at one end of the base 17, and the inside is provided with two-stage wind chambers (primary wind chamber 6 and secondary wind chamber 7).

[0050] Impeller: the shaft 12 is installed with a primary small impeller 5 and a secondary large impeller 9, which are located in the primary wind chamber 6 and the secondary wind chamber 7 respectively, and the secondary large impeller 9 is 0.03 times larger than the primary small impeller 5.

[0051] Airflow path:

[0052] Air inlet: air enters the primary wind chamber 6 of the fan shell from the inlet.

[0053] Primary compression: the primary small impeller 5 rotates to compress air and enters the secondary wind chamber 7 through the air vent, and the guide vane on the back of the primary small impeller 5 helps to optimize airflow and improve fan efficiency, which can be realized by using a double-inclined rod.

[0054] Secondary compression: the secondary large impeller 9 continues to compress air and then discharges through the outlet.

[0055] Partition and vents: The vents on the partition allow air to flow from the primary air cavity 6 to the secondary air cavity 7, achieving double compression.

[0056] Transmission and installation:

[0057] Bearing seat 11: The bearing seat 11 is installed on the base 17, located between the motor 16 and the fan housing, and is used to support the rotating shaft 12.

[0058] Rotating shaft 12: The rotating shaft 12 passes through the fan casing and the vent, and extends into the primary air cavity 6 and the secondary air cavity 7.

[0059] Coupling 15: The output end of the motor 16 is connected to the rotating shaft 12 through the coupling 15 to transmit power.

[0060] This high-pressure, airtight, two-stage, high-efficiency food-grade blower primarily consists of a base 17, a motor 16, a blower housing, and an impeller. The motor 16 drives the rotating shaft 12, onto which are mounted a first-stage small impeller 5 and a second-stage large impeller 9. When the motor 16 is started, the first-stage small impeller 5 and the second-stage large impeller 9 rotate synchronously, generating suction that draws air in through the inlet. After initial acceleration and compression in the first-stage air chamber 6, the air enters the second-stage air chamber 7 through the vents on the partition for further acceleration and compression before being discharged through the outlet. The guide vanes on the back of the first-stage small impeller 5 help optimize airflow and improve blower efficiency.

[0061] Optimal technical solution and working principle

[0062] Cleaning mechanism:

[0063] Pressure water storage tank 30: installed on the base 17, used to store cleaning water.

[0064] Working Principle: Cleaning water is supplied by a pressure water storage tank 30 and delivered to the primary and secondary air chambers 6 and 7 via a water conduit 28. The cleaning nozzles then clean the interiors of the air chambers. After cleaning, the cleaning water is drained through the primary and secondary drain pipes 21 and 20, keeping the fan clean.

[0065] The water conduit 28 is provided with two branches, which are respectively connected to the primary air cavity 6 and the secondary air cavity 7.

[0066] Working principle: The water guide pipe 28 is divided into two branches, which are connected to the side and top of the fan housing respectively, ensuring that the cleaning water evenly covers the inside of the air cavity and improves the cleaning effect.

[0067] Cleaning nozzle: installed at the end of the water pipe 28, used for spraying cleaning liquid.

[0068] Ball valve 27: used to control the flow rate and opening / closing of the cleaning fluid.

[0069] Drain pipe: The primary drain pipe 21 and the secondary drain pipe 20 are connected to the primary air cavity 6 and the secondary air cavity 7 respectively, used for draining the cleaned wastewater.

[0070] Auxiliary structure:

[0071] Flange and expansion joint: The outlet and inlet are equipped with flanges and expansion joints, used for connecting pipelines and reducing vibrations.

[0072] Working principle: The flange is used to connect the fan and the pipeline system, and the expansion joint absorbs the vibration and displacement of the pipeline system, protecting the fan connection

[0073] Flow collector: The inlet is equipped with a primary flow collector 3, and the ventilation port is equipped with a secondary flow collector 8, used for collecting and guiding airflow.

[0074] Working principle: The primary flow collector 3 collects and accelerates the airflow entering the fan, and the secondary flow collector 8 further accelerates and rectifies the airflow, improving the efficiency and performance of the fan.

[0075] Cotton wrapping 4: The front side of the fan shell is equipped with cotton wrapping 4, used for reducing noise and heat preservation.

[0076] Working principle: The cotton wrapping 4 is installed at the inlet to reduce airflow noise and vortex loss, improving the quiet performance and efficiency of the fan.

[0077] Access door 23: The rear side of the fan shell is equipped with an access door 23 for easy maintenance and inspection.

[0078] Sensor and junction box 22: The bearing seat 11 is equipped with a vibration sensor 13 and a temperature sensor 26, and the base 17 is equipped with a junction box 22, used for monitoring the running state.

[0079] Working principle: Real-time monitoring of the fan running state, once abnormal vibration or high temperature is found, timely measures are taken to handle, protecting the safety of the fan.

[0080] Sealing and protection: The through part of the rotating shaft 12 and the fan shell is equipped with a sealing bearing 10, and the outer side of the coupling 15 is equipped with a protective cover 14 to prevent foreign matter from entering.

[0081] Working principle: The sealing bearing 10 prevents airflow leakage and dust from entering, and the protective cover 14 protects the coupling 15 and the rotating shaft 12 from external interference.

[0082] Shock absorbing foot 19: The bottom of the channel steel base 18 is equipped with a shock absorbing foot 19, used to reduce the vibration of the fan during operation, improve stability and comfort.

[0083] Motor strong cooling fan 29: The motor strong cooling fan 29 is configured at the rear end of the motor 16, effectively reducing the working temperature of the motor 16, improving the service life of the motor 16 and the overall performance of the fan.

[0084] In summary, the high-pressure air-tight two-stage high-efficiency food-grade fan and the preferred technical solutions thereof significantly improve the efficiency, performance, maintainability and service life of the fan through careful design and optimization, while meeting the requirements of the food industry for high cleanliness and safety of the fan.

[0085] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. High-pressure, airtight, two-stage, high-efficiency food-grade fan, characterized by: The invention comprises a base (17), a motor (16), a fan housing and an impeller, wherein a channel steel chassis (18) is provided at the bottom of the base (17), the motor (16) is fixedly mounted on the base (17), the fan housing is fixedly mounted on one end of the base (17), an outlet is provided at the top of the fan housing, an inlet is provided at one side of the fan housing, a primary air cavity (6) and a secondary air cavity (7) are provided inside the fan housing, and the outlet is communicated with the primary air cavity (6) and the secondary air cavity (7), a partition is provided between the primary air cavity (6) and the secondary air cavity (7), a vent is provided on the partition, and a bearing seat (11) is installed on the base (17). ), the bearing seat (11) is located between the motor (16) and the fan housing, a rotating shaft (12) is rotatably mounted on the bearing seat (11), the rotating shaft (12) passes through the fan housing and the vent and extends into the primary air cavity (6) and the secondary air cavity (7), the impeller is mounted on the rotating shaft (12), the impeller includes a primary small impeller (5) and a secondary large impeller (9), and the primary small impeller (5) is located in the primary air cavity (6), the secondary large impeller (9) is located in the secondary air cavity (7), the back of the primary small impeller (5) is provided with a guide vane, and the output end of the motor (16) is connected to the rotating shaft (12) through a coupling (15).

2. The high-pressure, airtight, two-stage, high-efficiency food-grade blower according to claim 1, characterized in that: The fan housing further comprises a cleaning mechanism, wherein the cleaning mechanism comprises a pressure water storage tank (30), the pressure water storage tank (30) being mounted on a base (17), the pressure water storage tank (30) being provided with a water inlet pipe and a water guide pipe (28), the water guide pipe (28) being provided with two branches, and the water guide pipe (28) being communicated with a primary air cavity (6) and a secondary air cavity (7), a cleaning nozzle being provided at the end of the water guide pipe (28), a ball valve (27) being provided on the water guide pipe (28), and a primary drain pipe (21) and a secondary drain pipe (20) being provided at the bottom of the fan housing, the primary drain pipe (21) being communicated with the primary air cavity (6), and the secondary drain pipe (20) being communicated with the secondary air cavity (7).

3. The high-pressure, airtight, two-stage, high-efficiency food-grade blower according to claim 2, characterized in that: The water conduits (28) of the two branches are respectively communicated with the side of the fan casing and the top of the fan casing.

4. The high-pressure, airtight, two-stage, high-efficiency food-grade blower according to claim 3, characterized in that: The outlet is provided with an outlet flange (24), the inlet is provided with an inlet flange (2), the outlet flange (24) is installed with an outlet expansion joint (25), and the inlet flange (2) is installed with an inlet expansion joint (1).

5. The high-pressure, airtight, two-stage, high-efficiency food-grade blower according to claim 4, characterized in that: A primary collector (3) is installed on the inlet, and the primary collector (3) is in communication with the primary air cavity (6); a secondary collector (8) is installed on the vent, and the secondary collector (8) is in communication with the primary air cavity (6) and the secondary air cavity (7).

6. The high-pressure, airtight, two-stage, high-efficiency food-grade blower according to claim 5, characterized in that: A cotton bag (4) is installed on the front side of the fan housing, and the cotton bag (4) is located at the inlet.

7. The high-pressure, airtight, two-stage, high-efficiency food-grade blower according to claim 6, characterized in that: A vibration sensor (13) and a temperature sensor (26) are mounted on the bearing seat (11), a junction box (22) is mounted on the base (17), and the junction box (22) is electrically connected to the motor (16), the vibration sensor (13), the temperature sensor (26) and the ball valve (27).

8. The high-pressure, airtight, two-stage, high-efficiency food-grade blower according to claim 7, characterized in that: An inspection door (23) is provided on the rear side of the fan housing.

9. The high-pressure, airtight, two-stage, high-efficiency food-grade blower according to claim 8, characterized in that: A sealed bearing (10) is provided at the penetration point between the rotating shaft (12) and the fan housing, and a protective cover (14) is provided on the outer side of the coupling (15).

10. The high-pressure, airtight, two-stage, high-efficiency food-grade blower according to claim 9, characterized in that: The bottom of the channel steel chassis is provided with a shock-absorbing support foot (19), and the rear end of the motor (16) is provided with a motor forced cooling fan (29).

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