Double-suction high-speed centrifugal blower

Abstract

The utility model discloses a double-suction high-speed centrifugal blower which comprises a base, a transmission mechanism, a double-suction mechanism and an output mechanism. The transmission mechanism comprises a motor and a gear box; the motor is arranged on the right side of the top surface of the base; the gearbox is arranged on the left side of the top face of the base, the input end of the gearbox is in transmission connection with a motor output shaft, and the output end is a horizontal high-speed shaft. The double-suction mechanism comprises a first suction assembly and a second suction assembly, and the first suction assembly and the second suction assembly are connected with the two ends of the high-speed shaft respectively. And the output mechanism is connected with an air outlet of the double-suction mechanism. The flow of the air blower can be improved, axial force is balanced, the equipment size is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of blowers, and in particular relates to a double-intake high-speed centrifugal blower. Background Art

[0002] High-speed centrifugal blowers are widely used in industrial production, ventilation, and gas transportation. Their high-speed rotation of the impeller draws gas in through the inlet, compresses it through the volute, and then discharges it through the outlet. Their high efficiency and stable performance make them important in the chemical, metallurgical, and environmental protection industries.

[0003] A single-stage high-speed centrifugal blower is a type of high-speed centrifugal blower characterized by a single impeller and volute, directly compressing the gas through the rotation of the impeller. Due to its relatively simple structure, single-stage high-speed centrifugal blowers are widely used in applications requiring lower pressure and air volume.

[0004] Currently, the primary method for increasing air volume in traditional single-stage, high-speed centrifugal blowers is to design larger impellers and volutes to meet flow requirements. However, larger impellers and volutes directly increase the size and weight of the equipment, taking up more space and making installation and maintenance more complex and expensive. Furthermore, larger impellers generate greater axial forces, making it more difficult to balance these forces, increasing design and manufacturing complexity and equipment cost. Utility Model Content

[0005] The purpose of the utility model is to provide a double-intake high-speed centrifugal blower to solve the technical problems raised in the above background technology.

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

[0007] A double-intake high-speed centrifugal blower includes a base, a transmission mechanism, a double-intake mechanism, and an output mechanism. The base is arranged horizontally; the transmission mechanism includes a motor and a gear box; the motor is arranged on the right side of the top surface of the base; the gear box is arranged on the left side of the top surface of the base, its input end is connected to the motor output shaft, and the output end is a horizontal high-speed shaft; the double-intake mechanism includes a first suction component and a second suction component, and the first suction component and the second suction component are respectively connected to the two ends of the high-speed shaft; the output mechanism is connected to the air outlet of the double-intake mechanism.

[0008] Furthermore, the gear box is connected to the motor output shaft via a diaphragm coupling.

[0009] Furthermore, the first suction assembly includes a first impeller, a first volute, a first air inlet pipe, and a first air outlet pipe; the first impeller is fixed at the left end of the high-speed shaft; the first volute cover is arranged on the first impeller and connected to the left side of the gear box; the air outlet of the first air inlet pipe is connected to the air inlet of the first volute; the air inlet of the first air outlet pipe is connected to the air outlet of the first volute.

[0010] Furthermore, the second suction assembly includes a second impeller, a second volute, a second air inlet pipe, and a second air outlet pipe; the second impeller is fixed at the right end of the high-speed shaft; the second volute cover is arranged on the second impeller and connected to the right side of the gearbox; the air outlet of the second air inlet pipe is connected to the air inlet of the second volute; the air inlet of the second air outlet pipe is connected to the air outlet of the second volute.

[0011] Furthermore, the double-intake mechanism further includes a flow nozzle; the flow nozzle is connected to the air inlets of the first air inlet pipe and the second air inlet pipe respectively.

[0012] Furthermore, the output mechanism includes a first connecting tube, a second connecting tube, and a four-way tube; the four-way tube is horizontally arranged, and has two connecting ports at its bottom and connecting ports at both ends; the air inlets of the first connecting tube and the second connecting tube are respectively connected to the first air outlet pipe and the second air outlet pipe, and the air outlets are respectively connected to the two connecting ports at the bottom of the four-way tube.

[0013] Furthermore, the output mechanism further includes a bellows; two bellows are provided; the first connecting pipe and the second connecting pipe are connected to the first air outlet pipe and the second air outlet pipe respectively through the bellows.

[0014] Furthermore, the output mechanism also includes a mounting plate; the mounting plate is fixedly sleeved on the bellows.

[0015] Furthermore, it also includes a muffler; the muffler is connected to the connecting pipe at the right end of the four-way pipe.

[0016] Furthermore, a vent valve is provided on the connecting pipeline between the muffler and the four-way pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The utility model provides a double suction mechanism at both ends of the high-speed shaft, and the first impeller and the second impeller of the first suction assembly and the second suction assembly are connected in parallel on the high-speed shaft. The two impellers rotate in opposite directions, and then the gas is synchronously discharged into the four-way pipe and discharged through the four-way pipe, forming a double-suction, single-output centrifugal blower. The two impellers are installed at both ends of a shaft, and the two impellers have the same characteristics, the same outlet pressure and the same size during operation, so the axial force they generate is the same. The two impellers can offset each other's axial force, thereby achieving balanced axial force between the impellers and increasing the blower flow rate. There is no need to design a larger impeller and volute, reducing the equipment volume and reducing costs.

[0019] 2. The utility model arranges bellows on the first air outlet pipe and the second air outlet pipe, adjusts the air outlet height of the first air outlet pipe and the second air outlet pipe, makes the air outlet height of the first air outlet pipe and the second air outlet pipe the same, ensures that the air flow can maintain a consistent flow path when discharged, and avoids pressure difference and vibration caused by uneven air flow; at the same time, a mounting plate is arranged on the bellows to support the weight of the first air outlet pipe and the second air outlet pipe, prevents the volute from being subjected to a large gravity due to its excessive weight and causing damage, and can fix the first air outlet pipe and the second air outlet pipe at the same time.

[0020] 3. The utility model can be used to reduce the noise generated when the blower is working by arranging a muffler, improve the working environment, and protect the health of the staff. A vent valve is arranged on the connecting pipeline between the four-way pipe and the muffler to prevent the blower from surging, protect the blower during start-up and shutdown, and ensure smooth operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the connection mechanism between the double suction structure and the transmission mechanism of the utility model;

[0023] In the accompanying drawings, 1-base;

[0024] 2- transmission mechanism; 21- motor; 22- gear box; 23- high-speed shaft; 24- diaphragm coupling;

[0025] 3-Dual suction mechanism;

[0026] 31-first suction assembly; 311-first impeller; 312-first volute; 313-first air inlet pipe; 314-first air outlet pipe;

[0027] 32-second suction assembly; 321-second impeller; 322-second volute; 323-second air inlet pipe; 324-second air outlet pipe;

[0028] 33-Flow nozzle.

[0029] 4- output mechanism; 41- first connecting pipe; 42- second connecting pipe; 43- cross pipe; 44- bellows; 45- mounting plate;

[0030] 5-Muffler; 6-Vent valve. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in this specification are merely provided to help readers gain a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0032] like Figure 1-2 As shown, a double-intake high-speed centrifugal blower includes a base 1, a transmission mechanism 2, and a double-intake mechanism 3. The base 1 is arranged horizontally; the transmission mechanism 2 includes a motor 21 and a gear box 22; the motor 21 is arranged on the right side of the top surface of the base 1; the gear box 22 is arranged on the left side of the top surface of the base 1, its input end is connected to the output shaft of the motor 21, and its output end is a horizontal high-speed shaft 23; the double-intake mechanism 3 includes a first suction component 31 and a second suction component 32; the first suction component 31 and the second suction component 32 are respectively connected to the two ends of the high-speed shaft 23. The motor 21 drives the gear box 22 to rotate, the gear box 22 drives the high-speed shaft 23 to rotate, and the high-speed shaft 23 drives the first suction component 31 and the second suction component 32 to rotate.

[0033] The gearbox 22 is connected to the output shaft of the motor 21 via a diaphragm coupling 24. The motor 21 outputs power to the input of the gearbox 22 via the diaphragm coupling 24. The diaphragm coupling 24 transmits the power of the motor 21 to the gearbox 22, ensuring the smooth operation of the entire transmission system. The diaphragm coupling 24 is flexible enough to absorb vibrations generated by equipment operation and compensate for minor axial, radial, and angular displacements during operation, thereby reducing equipment wear and extending its life.

[0034] The first suction assembly 31 includes a first impeller 311, a first volute 312, a first air inlet pipe 313, and a first air outlet pipe 314. The first impeller 311 is fixed to the left end of the high-speed shaft 23 via an impeller locking nut. The first volute 312 covers the first impeller 311 and is bolted to the left side of the gearbox 22. The outlet of the first air inlet pipe 313 is connected to the air inlet of the first volute 312. The inlet of the first air outlet pipe 314 is connected to the air outlet of the first volute 312. The rotation of the high-speed shaft 23 drives the rotation of the first impeller 311, which draws gas from the first air inlet pipe 313 into the first volute 312 for compression, and then discharges it through the first air outlet pipe 314.

[0035] The second suction assembly 32 includes a second impeller 321, a second volute 322, a second air inlet pipe 323, and a second air outlet pipe 324; the second impeller 321 is fixed to the right end of the high-speed shaft 23 by an impeller locking nut; the second volute 322 is covered on the second impeller 321 and bolted to the right side of the gearbox 22; the air outlet of the second air inlet pipe 323 is connected to the air inlet of the second volute 322; the air inlet of the second air outlet pipe 324 is connected to the air outlet of the second volute 322. The high-speed shaft 23 rotates, driving the second impeller to rotate. The second impeller 321 draws gas from the second air inlet pipe 323 into the second volute 322 for compression, and then discharges it through the second air outlet pipe 324. The first impeller 311 and the second impeller 321 have the same characteristics, opposite rotation directions, and the same outlet pressure and size during operation. Therefore, the axial force generated by each impeller is the same, and the two impellers can offset each other's axial forces.

[0036] The dual-intake mechanism 3 also includes a flow nozzle 33, which is threadedly connected to the air inlets of the first and second air inlet pipes 313, 323, respectively. The flow nozzle 33 is used to control and regulate the airflow rate, precisely controlling the amount of air entering the system and ensuring that the speed and volume of air entering the system are within the optimal range. This optimizes the blower's operating efficiency and protects the blower from wear and failure.

[0037] The output mechanism 4 includes a first connecting pipe 41, a second connecting pipe 42, and a cross-shaped pipe 43. The cross-shaped pipe 43 is horizontally arranged with two connection ports at its bottom and two connection ports at its ends. The air inlets of the first and second connecting pipes 41, 42 are connected to the first and second outlet pipes 314, 324, respectively, and the air outlets are connected to the two connection ports at the bottom of the cross-shaped pipe 43. Gas enters the first and second connecting pipes 41, 42 from the first and second outlet pipes 314, 324, respectively, then enters the cross-shaped pipe 43 from the first and second connecting pipes 41, 42, and is finally discharged from the connection port on the left side of the cross-shaped pipe 43.

[0038] The output mechanism 4 also includes two bellows 44. The first connecting pipe 41 and the second connecting pipe 42 are connected to the first outlet pipe 314 and the second outlet pipe 324, respectively, via the bellows 44. The bellows 44 are used to adjust the outlet heights of the first and second outlet pipes 314, 324, ensuring that the outlets are at the same height. This ensures that the airflow maintains a consistent flow path during discharge, avoiding pressure differences and vibrations caused by uneven airflow. This also facilitates the installation of the mounting plate 45.

[0039] The output mechanism 4 further includes a mounting plate 45, which is fixedly mounted on the bellows 44. The mounting plate 45 supports the weight of the first and second air outlet pipes 314, 324, preventing the volute from being damaged by excessive gravity due to their weight, and also secures the first and second air outlet pipes 314, 324.

[0040] The blower 40 further comprises a muffler 5, which is connected to the connecting pipe of the right end of the four-way pipe 43. The muffler 5 is used to reduce the noise generated when the blower is working, improve the working environment, and protect the health of the staff.

[0041] A vent valve 6 is provided on the connecting pipeline between the muffler 5 and the cross-tube 43. The vent valve 6 is used to prevent the blower from surging and protect the blower during startup and shutdown.

[0042] The working mode of the utility model is:

[0043] The motor 21 rotates and transmits power to the gearbox 22 via the diaphragm coupling 24. The gearbox 22 then transmits the power to the high-speed shaft 23, causing it to rotate. The rotation of the high-speed shaft 23 drives the first impeller 311 and the second impeller 321 to rotate. The first impeller 311 and the second impeller 321 draw gas into the first volute 312 and the second volute 322, respectively, for compression, and discharge the gas through the first outlet pipe 314 and the second outlet pipe 324, respectively. The gas discharged from the first outlet pipe 314 and the second outlet pipe 324 enters the cross-section pipe 43 through the first connecting pipe 41 and the second connecting pipe 42, respectively, and is then discharged through the outlet on the left side of the cross-section pipe 43 for use.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A double-intake high-speed centrifugal blower, comprising a base, a transmission mechanism, a double-intake mechanism, and an output mechanism, characterized in that: The base is arranged horizontally; the transmission mechanism includes a motor and a gear box; the motor is arranged on the right side of the top surface of the base; the gear box is arranged on the left side of the top surface of the base, its input end is connected to the motor output shaft, and the output end is a horizontal high-speed shaft; the double suction mechanism includes a first suction component and a second suction component, and the first suction component and the second suction component are respectively connected to the two ends of the high-speed shaft; the output mechanism is connected to the air outlet of the double suction mechanism.

2. The double-intake high-speed centrifugal blower according to claim 1, characterized in that: The gear box is connected to the motor output shaft via a diaphragm coupling.

3. The double-intake high-speed centrifugal blower according to claim 1, characterized in that: The first suction assembly includes a first impeller, a first volute, a first air inlet pipe, and a first air outlet pipe; the first impeller is fixed to the left end of the high-speed shaft; the first volute cover is arranged on the first impeller and connected to the left side of the gear box; the air outlet of the first air inlet pipe is connected to the air inlet of the first volute; the air inlet of the first air outlet pipe is connected to the air outlet of the first volute.

4. The double-intake high-speed centrifugal blower according to claim 3, characterized in that: The second suction assembly includes a second impeller, a second volute, a second air inlet pipe, and a second air outlet pipe; the second impeller is fixed to the right end of the high-speed shaft; the second volute cover is arranged on the second impeller and connected to the right side of the gearbox; the air outlet of the second air inlet pipe is connected to the air inlet of the second volute; the air inlet of the second air outlet pipe is connected to the air outlet of the second volute.

5. The double-intake high-speed centrifugal blower according to claim 4, characterized in that: The double-intake mechanism further comprises a flow nozzle; the flow nozzle is connected to the air inlet of the first air inlet pipe and the air inlet of the second air inlet pipe respectively.

6. The double-intake high-speed centrifugal blower according to claim 4, characterized in that: The output mechanism includes a first connecting pipe, a second connecting pipe, and a four-way pipe; the four-way pipe is arranged horizontally, and has two connecting ports at its bottom and two connecting ports at both ends; the air inlets of the first connecting pipe and the second connecting pipe are respectively connected to the first air outlet pipe and the second air outlet pipe, and the air outlets are respectively connected to the two connecting ports at the bottom of the four-way pipe.

7. The double-intake high-speed centrifugal blower according to claim 6, characterized in that: The output mechanism further includes a bellows; two bellows are provided; the first connecting pipe and the second connecting pipe are connected to the first air outlet pipe and the second air outlet pipe respectively through the bellows.

8. The double-intake high-speed centrifugal blower according to claim 7, characterized in that: The output mechanism further comprises a mounting plate; the mounting plate is fixedly sleeved on the corrugated pipe.

9. The double-intake high-speed centrifugal blower according to claim 6, characterized in that: It also includes a muffler; the muffler is connected to the connecting pipe at the right end of the four-way pipe.

10. The double-intake high-speed centrifugal blower according to claim 9, characterized in that: A vent valve is provided on the connecting pipeline between the muffler and the four-way pipe.

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