Round flow channel type fan positioning inlet clock

Abstract

The utility model relates to the technical field of fan accessories, and discloses a circular flow channel type fan positioning inlet clock which comprises an annular air inlet flange and an inlet clock body, the inner edge of the right side of the air inlet flange is connected with an air inlet of the inlet clock body, a plurality of reinforcing ribs are arranged on the outer wall of the inlet clock body, and an air outlet flange is arranged at an air outlet of the inlet clock body. An annular positioning groove is formed in the right side of the air inlet flange, a plurality of mounting holes are formed in the positioning groove along the circumference, a plurality of pin holes are formed in the outer wall of the positioning groove along the circumference, positioning pins are mounted in the pin holes and comprise pins and pin bushes, the pins are sleeved with the pin bushes, and the tails of the pins are fixedly connected with the inner walls of the tops of the pin bushes through springs; when the entrance clock is installed, the entrance clock is limited, the loss caused by collision is prevented, the installation holes can be limited, and the installation holes can be conveniently aligned and fixed through bolts.

Description

Technical Field

[0001] The utility model relates to the technical field of fan accessories, in particular to a circular flow channel type fan positioning inlet bell. Background Art

[0002] In the production and manufacturing processes of various industries, fans are needed for ventilation, cooling, gas transportation, smoke exhaust and dust removal. The fan is a machine that relies on input mechanical energy to increase the pressure of the inhaled gas and discharge the gas. In order to ensure the output quality and help the gas enter the fan impeller with minimal loss, uniformly distributed pressure and speed, it is necessary to install an inlet bell at the air inlet to guide the gas smoothly into the fan.

[0003] For example, patent document CN216842372U discloses a new type of fan inlet bell, including a conical main body with a left-right central axis and a stable connecting column, a first fastening and fitting connecting plate is provided on the right side of the main body and the stable connecting column, and an integrally formed cylindrical second fastening and fitting connecting plate is provided on the left side of the main body and the stable connecting column, an integrally formed installation combination sealing and stable connecting column with an arc-shaped outer cross-section is provided on the left side of the second fastening and fitting connecting plate, and an integrally formed sealing combination anti-loosening fitting column with an arc-shaped outer cross-section is provided on the left side of the installation combination sealing and stable connecting column; however, this existing technology still has many shortcomings, for example: the inlet bell cannot be limited when installing, which is prone to collision and damage, the mounting hole cannot be limited, and manual alignment of the mounting hole is required, and the installation is not convenient enough. Utility Model Content

[0004] The purpose of the utility model is to provide a circular flow channel type fan positioning inlet bell to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circular flow channel fan positioning inlet bell, comprising an annular air inlet flange and an inlet bell body, the right inner edge of the air inlet flange is connected to the air inlet of the inlet bell body, the outer wall of the inlet bell body is provided with a plurality of reinforcing ribs, the air outlet of the inlet bell body is provided with an air outlet flange, an annular positioning groove is provided on the right side of the air inlet flange, a plurality of mounting holes are provided along the circumference of the positioning groove, a plurality of pin holes are provided along the circumference of the outer wall of the positioning groove, and positioning pins are installed in the plurality of pin holes, the positioning pin comprises a pin and a pin sleeve, the pin sleeve is provided in the pin sleeve, and the tail of the pin is fixedly connected to the inner wall of the top of the pin sleeve by a spring.

[0006] As a further improvement to the above scheme, the fan body is connected to the right side of the air inlet flange, an air suction port connected to the interior of the fan body is opened on the left side of the fan body, a mounting flange is provided on the outer edge of the air suction port, and a transmission hole connected to the interior of the fan body is opened on the right side of the fan body.

[0007] As a further improvement to the above solution, a positioning convex ring matching the positioning groove is provided on the left side of the mounting flange, a plurality of mounting holes are provided on the positioning convex ring, and a plurality of positioning holes are provided on the outer side of the positioning convex ring.

[0008] As a further improvement to the above scheme, an impeller assembly is provided in the fan body, and the impeller assembly includes an annular conical front disk, blades and a rear disk. The air outlet flange is sleeved in the annular conical front disk, and a plurality of blades are fixedly installed between the annular conical front disk and the rear disk.

[0009] As a further improvement to the above solution, a transmission shaft is fixedly connected to the right side of the rear disc, a driven pulley is connected to the right side of the transmission shaft, and a shaft bracket is provided on the outer sleeve of the transmission shaft.

[0010] As a further improvement to the above solution, the shaft bracket is fixedly mounted on the frame, a motor is provided under the frame, a driving pulley is provided at the output end of the motor, and a transmission belt is provided together with the driving pulley and the driven pulley.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model provides an air inlet flange at the air inlet of the inlet bell body, an annular positioning groove is opened on the right side of the air inlet flange, a plurality of mounting holes are opened along the circumference of the positioning groove, a plurality of pin holes are opened along the circumference of the outer wall of the positioning groove, positioning pins are installed in the plurality of pin holes, a mounting flange is provided on the left side of the fan body, a positioning convex ring matching the positioning groove is provided on the left side of the mounting flange, a plurality of mounting holes are opened on the positioning convex ring, and a plurality of positioning holes are opened on the outer side of the positioning convex ring; the positioning groove and the positioning convex ring are matched to limit the inlet bell during installation to prevent the inlet bell from shaking and colliding, causing damage to the machine; the positioning pin and the positioning hole are matched to limit the mounting hole during installation to assist in aligning the mounting hole and facilitate fixing with bolts.

[0013] 2. The utility model pre-installs the positioning pin, which includes a pin and a pin sleeve. The pin sleeve is arranged in the pin sleeve, and the tail of the pin is fixedly connected to the inner wall of the top of the pin sleeve by a spring. When installing the entrance bell, the positioning groove and the positioning convex ring are docked and installed, and there is no need to manually insert the positioning pin, which reduces human operation. You only need to rotate the entrance bell, and the spring will automatically push the pin into the positioning hole, making the installation more convenient and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first viewing angle;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the positioning pin in the utility model;

[0018] Figure 4 This is a schematic structural diagram of the blower body in the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the fan body with the upper inlet bell installed in the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the connection between the inlet bell and the impeller assembly in the utility model;

[0021] Figure 7 This is a first-view stereoscopic structural diagram of the fan after installation in the present invention;

[0022] Figure 8 A second perspective three-dimensional structural diagram of the fan after installation in the utility model

[0023] In the figure: 1. Air inlet flange; 101. Positioning groove; 102. Pin hole; 2. Inlet bell body; 201. Reinforcement rib; 3. Air outlet flange; 4. Mounting hole; 5. Positioning pin; 501. Pin; 502. Pin sleeve; 6. Fan body; 601. Air inlet; 7. Mounting flange; 701. Positioning cam; 702. Positioning hole; 8. Transmission hole; 9. Impeller assembly; 901. Conical front disc; 902. Blades; 903. Rear disc; 10. Drive shaft; 1001. Driven pulley; 1002. Shaft bracket; 11. Frame; 12. Motor; 1201. Driving pulley. DETAILED DESCRIPTION

[0024] 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. Example 1

[0025] A circular channel fan positioning inlet bell, such as Figures 1 to 3 As shown, it includes an annular air inlet flange 1 and an inlet bell body 2. The inner edge of the right side of the air inlet flange 1 is connected to the air inlet of the inlet bell body 2. The outer wall of the inlet bell body 2 is provided with a number of reinforcing ribs 201 to strengthen the strength of the inlet bell body 2 and reduce the vibration of the inlet bell body 2 during operation. The air outlet of the inlet bell body 2 is provided with an air outlet flange 3. An annular positioning groove 101 is opened on the right side of the air inlet flange 1. An annular gasket is added to the positioning groove 101 during installation to prevent a gap from being generated between the inlet bell and the fan body 6 and affecting the air suction efficiency. A number of mounting holes 4 are opened along the circumference of the positioning groove 101, and a number of pin holes 102 are opened along the circumference of the outer wall of the positioning groove 101. Positioning pins 5 are installed in the several pin holes 102. The positioning pins 5 are arranged in conjunction with the positioning holes 7 to assist in aligning the mounting holes during installation.

[0026] like Figures 1 to 5 As shown, the fan body 6 is connected to the right side of the air inlet flange 1, and an air suction port 601 connected to the inside of the fan body 6 is provided on the left side of the fan body 6. A mounting flange 7 is provided on the outer edge of the air suction port 601, and a positioning protrusion 701 matching the positioning groove 101 is provided on the left side of the mounting flange 7. A plurality of mounting holes 4 are provided on the positioning protrusion 701, and a plurality of positioning holes 702 are provided on the outer side of the positioning protrusion 701. The positions of the positioning holes 701 and the positioning pins 5 correspond one to one, so that the air inlet flange 1 can be aligned with the mounting holes 4 on the mounting flange 7.

[0027] like Figure 6 and Figure 7 As shown, an impeller assembly 9 is provided in the fan body 6, and the impeller assembly 9 includes an annular conical front disk 901, blades 902 and a rear disk 903. The air outlet flange 3 is sleeved in the annular conical front disk 901 to ensure that the incoming air is completely transported to the impeller, reducing wind loss. The outer wall of the air outlet flange 3 does not contact the inner wall of the annular conical front disk 901. A number of blades 902 are fixedly installed between the annular conical front disk 901 and the rear disk 903. The blades 902 pressurize the inhaled air and transport it to the air outlet duct.

[0028] like Figure 7 and Figure 8As shown, a transmission shaft 10 is fixedly connected to the right side of the rear disc 903, and a transmission hole 8 communicating with the interior of the fan body 6 is opened on the right side of the fan body 6. The transmission shaft 10 extends out through the transmission hole 8, and a driven pulley 1001 is connected to the right side of the transmission shaft 10. A shaft bracket 1002 is provided on the outer sleeve of the transmission shaft 10, and a shaft sleeve is provided in the middle of the shaft bracket 1002 to support the transmission shaft 10. The shaft bracket 1002 is fixedly installed on the frame 11, and a motor 12 is provided under the frame 11. A driving pulley 1201 is provided at the output end of the motor 12, and a transmission belt is jointly provided on the driving pulley 1201 and the driven pulley 1001.

[0029] When Example 1 is working, the inlet bell body 2 is lifted to the mounting flange 7, the inlet bell is installed in the fan body 6, the air outlet flange 3 is inserted into the annular conical front plate 901, and at the same time, an annular gasket is added to the positioning groove 101 on the air inlet flange 1, and then the positioning protruding ring 701 on the mounting flange 7 is inserted into the positioning groove 101, and the positioning pin 5 is installed in the pin hole 102. The inlet bell body 2 is rotated so that the positioning pin 5 is inserted into the positioning hole 702. At this time, the mounting holes 4 are just aligned, and the bolts are used symmetrically in sequence to pass through the mounting holes to fix the inlet bell body 2 on the fan body 6. Example 2

[0030] Example 2 Based on Example 1, as 1 to Figure 5 As shown in the figure, the positioning pin 5 includes a pin 501 and a pin sleeve 502. The pin 501 is sleeved in the pin sleeve 502. The tail of the pin 501 is fixedly connected to the inner wall of the top of the pin sleeve 502 with a spring. Before installing the entrance bell, first install the positioning pin 5 in the pin hole 102, and insert the positioning protruding ring 701 into the positioning groove 101. The pin 501 is retracted into the pin sleeve 502, and the entrance bell is rotated. When the mounting hole 4 is aligned, the pin 501 is pushed into the positioning hole 702 by the spring, so that the entrance bell is limited, which is convenient for fixing the entrance bell with bolts.

[0031] When Example 2 is working, the positioning pin 5 is installed in the pin hole 102 before installation. When the positioning protrusion 701 is inserted into the positioning groove 101, the pin 501 is squeezed into the pin sleeve 502 by the side wall of the positioning protrusion 701, and the inlet bell body 2 is rotated to align the mounting hole 4. The pin 501 is pushed into the positioning hole 702 by the spring to limit the rotation of the inlet bell body 2. Then, the bolts are symmetrically used to pass through the mounting holes in sequence to fix the inlet bell body 2 on the fan body 6.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circular channel fan positioning inlet bell, comprising an annular air inlet flange (1) and an inlet bell body (2), characterized in that: The right inner edge of the air inlet flange (1) is connected to the air inlet of the inlet bell body (2), the outer wall of the inlet bell body (2) is provided with a plurality of reinforcing ribs (201), the air outlet of the inlet bell body (2) is provided with an air outlet flange (3), the right side of the air inlet flange (1) is provided with an annular positioning groove (101), a plurality of mounting holes (4) are provided along the circumference of the positioning groove (101), a plurality of pin holes (102) are provided along the circumference of the outer wall of the positioning groove (101), and positioning pins (5) are installed in the plurality of pin holes (102), the positioning pins (5) include a pin (501) and a pin sleeve (502), the pin (501) is sleeved in the pin sleeve (502), and the tail of the pin (501) is fixedly connected to the inner wall of the top of the pin sleeve (502) using a spring.

2. The circular channel fan positioning inlet clock according to claim 1, characterized in that: The right side of the air inlet flange (1) is connected to the fan body (6), the left side of the fan body (6) is provided with an air suction port (601) which is in communication with the interior of the fan body (6), the outer edge of the air suction port (601) is provided with a mounting flange (7), and the right side of the fan body (6) is provided with a transmission hole (8) which is in communication with the interior of the fan body (6).

3. The circular channel fan positioning inlet clock according to claim 2, characterized in that: A positioning convex ring (701) matching the positioning groove (101) is provided on the left side of the mounting flange (7), a plurality of mounting holes (4) are provided on the positioning convex ring (701), and a plurality of positioning holes (702) are provided on the outer side surface of the positioning convex ring (701).

4. The circular channel fan positioning inlet clock according to claim 2, characterized in that: An impeller assembly (9) is provided in the fan body (6), and the impeller assembly (9) comprises an annular conical front disc (901), blades (902) and a rear disc (903); the air outlet flange (3) is sleeved in the annular conical front disc (901), and a plurality of blades (902) are fixedly mounted between the annular conical front disc (901) and the rear disc (903).

5. The circular channel fan positioning inlet bell according to claim 4, characterized in that: The right side of the rear disc (903) is fixedly connected to a transmission shaft (10), the right side of the transmission shaft (10) is connected to a driven pulley (1001), and the outer sleeve of the transmission shaft (10) is provided with a shaft bracket (1002).

6. The circular channel fan positioning inlet clock according to claim 5, characterized in that: The shaft support (1002) is fixedly mounted on the frame (11), a motor (12) is provided under the frame (11), a driving pulley (1201) is provided at the output end of the motor (12), and a transmission belt is provided on the driving pulley (1201) and the driven pulley (1001).

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