Roll-wing fan with adjustable radial air suction

Abstract

The utility model belongs to the field of fans, and particularly relates to a radial air suction adjustable roll-wing fan. Comprising a fan shell, and the fan shell comprises a cylinder and an air outlet pipe which are communicated with each other to form a whistle-shaped structure; a roll-wing fan is installed in a cavity of the cylinder, an axial air suction opening is formed in an opening of the cylinder, a radial air suction opening I is formed in the portion, located on the rear side of the air outlet pipe, of the cylinder in the rotating direction of the roll-wing fan, the radial air suction opening I is covered with an air suction adjusting plate, a radial air suction opening II is formed in the plate face of the air suction adjusting plate, and a guiding piece is arranged on the cylinder. The air suction adjusting plate and the guide piece are in sliding guide fit, and the air suction adjusting plate is fixed through a first locking assembly. The air outlet adjusting assembly is arranged at the air outlet of the air outlet pipe and used for adjusting the air speed and the air quantity of the air outlet, the whole device enables the air speed and the air quantity of the air outlet to be more suitable for grain cleaning, and therefore grains are cleaner, the grain loss rate is lower, the operation efficiency is improved, and the user income is improved.

Description

Technical Field

[0001] The utility model belongs to the field of fans, and particularly relates to a scroll-wing fan with adjustable radial air suction. Background Art

[0002] For an ordinary scroll-wing fan, the larger the width of the fan housing, the worse the wind speed uniformity. The existing scroll-wing fan structure can only suck a small amount of air flow from both sides, and the sucked air flow is mainly concentrated on both sides. Moreover, there are fan webs blocking on both sides, and the less air flow is sucked closer to the middle, resulting in uneven air volume at the air outlet, restricting the air volume and wind speed at the air outlet. Insufficient wind force leads to insufficient wind force on the sieve surface, high content of grain residues, incomplete cleaning, easy blockage of the sieve surface, increased crop losses, and reduced user benefits. Content of the Utility Model

[0003] In view of the above problems, the utility model provides a scroll-wing fan with adjustable radial air suction, which includes a fan housing. The fan housing comprises a cylinder and an air outlet pipe, which are communicated with each other to form a whistle-shaped structure.

[0004] A scroll-wing fan is installed in the cylinder cavity of the cylinder, and an axial air suction port is formed at the cylinder opening. Along the rotation direction of the scroll-wing fan, a radial air suction port I is opened on the cylinder behind the air outlet pipe. An air suction adjustment plate is covered on the radial air suction port I, and a radial air suction port II is opened on the surface of the air suction adjustment plate. Guide members are arranged on the cylinder at the outer edge of the air suction adjustment plate. The air suction adjustment plate and the guide members form a sliding guide fit to change the overlapping opening degree between the radial air suction port II and the radial air suction port I. The air suction adjustment plate is fixed by a first locking component to perform the operation of adjusting the radial air suction volume.

[0005] An air outlet adjustment component is arranged at the air outlet of the air outlet pipe for adjusting the wind speed and air volume at the air outlet.

[0006] Preferably, the air suction adjustment plate is an arc-shaped plate, and the inner arc surface is attached to the outer cylinder wall of the cylinder. The length of the air suction adjustment plate is parallel to the axis of the cylinder.

[0007] Preferably, the guide members are several trapezoidal angle codes, which are arranged on the outer cylinder wall of the cylinder along the long side of the air suction adjustment plate. The trapezoidal angle codes are in a Z shape, and the trapezoidal angle codes and the cylinder enclose a slideway. The slideway and the long side of the air suction adjustment plate form a slideway guide fit along the axial direction of the cylinder.

[0008] Preferably, the radial air suction port I and the radial air suction port II are the same in shape and size, correspond to each other, and are evenly arranged along the axis direction of the cylinder. When the radial air suction port I and the radial air suction port II completely overlap, the radial air suction volume reaches the maximum value.

[0009] Preferably, both the radial air inlet I and the radial air inlet II are kidney-shaped holes, and the length of the kidney-shaped hole is parallel to the axis of the cylinder.

[0010] Preferably, the first locking assembly includes a lug, a connecting piece, a first bolt and a first wing nut. The connecting piece is arranged along the long side of the air suction adjusting plate, and a long hole is formed in the connecting piece. A lug is installed on the outer cylinder wall of the cylinder, and the lug and the connecting piece are attached to each other.

[0011] The first bolt passes through the mounting hole on the lug, and the extending end of the first bolt forms a sliding fit with the long hole along the hole length direction, and is connected and fixed by the first wing nut.

[0012] Preferably, the air outlet adjusting assembly includes an air outlet adjusting plate. The air outlet adjusting plate is arranged in the air outlet along the length direction, so that both ends of the air outlet adjusting plate respectively abut against both sides of the inner wall of the air outlet, and the abutting surfaces are connected through a pin and fixed by a second locking assembly to perform the adjustment operation of the air velocity and air volume of the air outlet.

[0013] Preferably, the second locking assembly includes a second arc-shaped kidney-shaped hole and a second bolt. A second arc-shaped kidney-shaped hole is formed in the air outlet, and the centers of the second arc-shaped kidney-shaped holes are distributed on the axis of the pin. A second threaded hole is formed at the end of the air outlet adjusting plate. The air outlet adjusting plate is adjusted to rotate the air outlet adjusting plate around the pin. The second bolt slides along the arc length direction of the second arc-shaped kidney-shaped hole until the second bolt is aligned with the second threaded hole of the air outlet adjusting plate and is screwed and fixed.

[0014] Preferably, the side wall of the air outlet between the second arc-shaped kidney-shaped hole and the pin is penetrated by a third arc-shaped kidney-shaped hole, and the third arc-shaped kidney-shaped hole is concentric with the second arc-shaped kidney-shaped hole; a third threaded hole is correspondingly formed at the end of the air outlet adjusting plate, and a third bolt passes through the third arc-shaped kidney-shaped hole and is connected to the third threaded hole to ensure the connection stability between the air outlet adjusting plate and the air outlet pipe.

[0015] Preferably, the scroll wing fan includes a group of fan webs, a fan shaft and fan blades. The fan shaft is coaxially arranged in the cylinder cavity of the cylinder. Both ends of the fan shaft are fixed in the cylinder by a group of fan webs respectively, and any one end of the fan shaft is driven by a motor to generate a rotating motion, and fan blades are arranged on the fan shaft.

[0016] Beneficial effects

[0017] The utility model breaks through the technical barrier of only axially sucking air from the side of the fan housing. By arranging the radial air inlet I, the air suction volume is increased, and the problem that the wind force on the sieve surface is insufficient due to insufficient suction force, the content of grain residues is high, the cleaning is not thorough, the sieve surface is easily blocked, the crop loss is increased, and the user's income is reduced is weakened.

[0018] Not only that, but also on this basis, an air suction regulating plate is arranged. By sliding the air suction regulating plate in the limiting member, the overlapping opening degree between the radial air suction port II and the radial air suction port I is changed to perform the operation of regulating the radial air suction volume. After adjustment, it is fixed by the first locking component, which can make the inhaled air flow more uniform, thereby improving the wind speed, air volume and uniformity of the air outlet;

[0019] Not only that, in order to further ensure the wind speed, air volume and uniformity of the air outlet, an air outlet regulating component is also provided. It can be said that the whole device has a smooth logic and is closely linked, making the wind speed and air volume of the air outlet more suitable for grain cleaning, so that the grain is cleaner, the grain loss rate is lower, the operation efficiency is increased, and the user's income is improved.

[0020] Other features and advantages of the present utility model will be described in the subsequent description, and part of them will be obvious from the description, or understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Shows a schematic diagram of a scroll wing fan with adjustable radial air suction in an embodiment of the present utility model;

[0023] Figure 2 Shows a schematic diagram of the first locking component in an embodiment of the present utility model;

[0024] Figure 3 Shows Figure 2 A partial enlarged schematic diagram of the A position of;

[0025] Figure 4 Shows Figure 2 A partial enlarged schematic diagram of the B position of.

[0026] In the figure,

[0027] 1. Fan housing; 11. Cylinder; 110. Radial air suction port I; 12. Air outlet pipe; a. Air outlet;

[0028] 2. Scroll wing fan; 20. Fan web; 21. Fan shaft; 22. Fan blades;

[0029] 3. Axial air suction port;

[0030] 41. Suction air regulating plate; 410. Radial suction air outlet II; 42. Guide; 420. Slideway; 43. First locking component; 430. Lobe; 431. Connecting piece; 432. First bolt; 433. First wing nut

[0031] 5. Air outlet regulating assembly; 51. Air outlet regulating plate; 52. Second locking component; 520. Second arc-shaped oblong hole; 521. Second bolt; 523. Third arc-shaped oblong hole; 524. Third bolt Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 1 shows a schematic diagram of a scroll wing fan with adjustable radial air suction in the embodiment of the present utility model; it can be clearly seen from this schematic diagram that a scroll wing fan with adjustable radial air suction includes a fan housing 1, and the fan housing 1 includes a cylinder 11 and an air outlet pipe 12, which are communicated with each other to form a whistle-shaped structure;

[0034] A scroll wing fan 2 is installed in the cylinder cavity of the cylinder 11. The scroll wing fan 2 includes a group of fan webs 20, a fan shaft 21 and fan blades 22. The fan shaft 21 is coaxially arranged in the cylinder cavity of the cylinder 11. Both ends of the fan shaft 21 are fixed in the cylinder 11 through a group of fan webs 20 respectively, and any one end of the fan shaft 21 is driven by a motor to generate a rotating motion. Fan blades 22 are installed on the fan shaft 21;

[0035] An axial air suction port 3 is formed at the cylinder opening of the cylinder 11. Along the rotation direction of the scroll wing fan 2, a radial air suction port I 110 is opened on the cylinder 11 at the rear side of the air outlet pipe 12. A suction air regulating plate 41 is covered on the radial air suction port I 110. A radial air suction port II 410 is opened on the plate surface of the suction air regulating plate 41. A guide 42 is arranged on the cylinder 11 at the outer edge of the suction air regulating plate 41. The suction air regulating plate 41 and the guide 42 form a sliding guiding fit to change the overlapping opening degree between the radial air suction port II 410 and the radial air suction port I 110. The suction air regulating plate 41 is fixed by a first locking component 43 to perform the operation of regulating the radial air suction volume;

[0036] An air outlet regulating assembly 5 is arranged at the air outlet a for regulating the air speed and air volume of the air outlet.

[0037] The existing scroll-wing fan structure can only suck in a small amount of air flow from both sides, and the sucked air flow is mainly concentrated on both sides. Moreover, there are fan side plates blocking on both sides, and the closer to the middle, the less air flow is sucked, resulting in uneven air volume at the air outlet, restricting the air volume and wind speed at the air outlet. However, the present utility model breaks through the technical barrier of only axially sucking air from the side of the fan housing 1. By arranging the radial air suction openings I110, the air suction volume increases, weakening the insufficient air suction force that leads to insufficient air force on the sieve surface, high content of grain residues, incomplete cleaning, easy blockage of the sieve surface, increased crop losses, and reduced user benefits;

[0038] Not only that, but also on this basis, an air suction adjustment plate 41 is arranged. By sliding the air suction adjustment plate 41 in the slideway 420, the overlapping opening degree between the radial air suction opening II410 and the radial air suction opening I110 is changed to perform the operation of adjusting the radial air suction volume. After adjustment, it is fixed by the first locking component 43, which can make the sucked air flow more uniform, thereby improving the wind speed, air volume and uniformity at the air outlet;

[0039] Not only that, in order to further ensure the wind speed, air volume and uniformity at the air outlet, an air outlet adjustment component 5 is also provided. It can be said that the whole set of devices has a smooth logic and is closely linked, making the wind speed and air volume at the air outlet more suitable for grain cleaning, so that the grain is cleaner, the grain loss rate is lower, the operation efficiency is increased, and the user benefits are improved.

[0040] The air suction adjustment plate 41 is an arc-shaped plate, and the inner arc surface is attached to the outer cylinder wall of the cylinder 11. The plate length of the air suction adjustment plate 41 is parallel to the axis of the cylinder 11.

[0041] In this way, it can be ensured that the gap between the air suction adjustment plate 41 and the cylinder 11 is small, and during adjustment, the accuracy can be better guaranteed.

[0042] The guiding member 42 is a number of trapezoidal angle codes, which are arranged along the long side of the air suction adjustment plate 41 on the outer cylinder wall of the cylinder 11. The trapezoidal angle codes are in a Z shape, and the trapezoidal angle codes and the cylinder 11 enclose to form a slideway 420. The slideway 420 and the long side of the air suction adjustment plate 41 form a sliding rail and slideway guiding fit along the axis of the cylinder 11.

[0043] The radial air suction openings I110 and the radial air suction openings II410 are the same in shape and size. The radial air suction openings I110 and the radial air suction openings II410 are both waist-shaped holes, and the hole length of the waist-shaped holes is parallel to the axis of the cylinder 11, corresponding to each other and evenly arranged along the axis direction of the cylinder 11. When the radial air suction openings I110 and the radial air suction openings II410 completely overlap, the radial air suction volume reaches the maximum value.

[0044] When the radial air suction port I110 and the radial air suction port II410 are of the same size, when adjusting, when they completely overlap with each other, there will be no extra obstruction at the air suction point. It is worth mentioning that not only waist-shaped holes can meet the requirements of the utility model. In fact, most hole shapes can achieve this effect, such as round holes, semi-circular holes, or elliptical holes. However, it is obvious that a waist-shaped hole whose length is parallel to the axis of the cylinder 11 can ensure a larger stroke during the adjustment process, so a waist-shaped hole is preferred.

[0045] refer to Figure 2 and Figure 3 , Figure 2 A schematic diagram of a first locking assembly in an embodiment of the utility model is shown; Figure 3 Shows Figure 2 A partial enlarged schematic diagram; the first locking assembly 43 includes an ear piece 430, a connecting piece 431, a first bolt 432 and a first butterfly nut 433, the connecting piece 431 is arranged along the long side of the air suction adjustment plate 41, and a long hole is opened on the connecting piece 431, the ear piece 430 is installed on the outer wall of the cylinder 11, and the ear piece 430 and the connecting piece 431 are in contact with each other;

[0046] The first bolt 432 passes through the mounting hole on the ear piece 430 , and the protruding end of the first bolt 432 forms a sliding fit with the long hole along the length direction of the hole, and is connected and fixed by the first butterfly nut 433 .

[0047] refer to Figure 4 , Figure 4 Shows Figure 2 The partial enlarged schematic diagram of point B; the air outlet adjustment component 5 includes an air outlet adjustment plate 51, which is arranged in the air outlet a along the length direction, so that the two ends of the air outlet adjustment plate 51 respectively abut against the two sides of the inner wall of the air outlet a, and the abutting surfaces are connected by pins and fixed by a second locking component 52 to perform the wind speed and air volume adjustment operation of the air outlet a.

[0048] The second locking assembly 52 includes a second arc-shaped waist hole 520 and a second bolt 521. A second arc-shaped waist hole 520 is opened on the air outlet a, and the center of the second arc-shaped waist hole 520 is distributed on the axis of the pin; a second threaded hole is opened on the end of the air outlet adjustment plate 51. The air outlet adjustment plate 51 is adjusted so that the air outlet adjustment plate 51 rotates around the pin, and the second bolt 521 slides along the arc length direction of the second arc-shaped waist hole 520 until the second bolt 521 is aligned with the second threaded hole of the air outlet adjustment plate 51 and is screwed together and fixed.

[0049] On the side wall of the air outlet a between the second arcuate waist-shaped hole 520 and the pin, a third arcuate waist-shaped hole 523 penetrates through. The third arcuate waist-shaped hole 523 is concentrically arranged with the second arcuate waist-shaped hole 520. A third threaded hole is correspondingly formed at the end of the air outlet adjusting plate 51. The third bolt 524 passes through the third arcuate waist-shaped hole 523 and is connected to the third threaded hole to ensure the connection stability between the air outlet adjusting plate 51 and the air outlet pipe 12.

[0050] During actual operation, the following steps can be referred to for practical operation. When a technician wants to adjust the size of the radial air suction port, first, pull the air suction adjusting plate 41 so that the air suction adjusting plate 41 slides along the slideway 420. Inevitably, the overlap degree between the radial air suction port II 410 and the radial air suction port I 110 will change. During the adjustment process, obviously, since the connecting piece 431 is arranged along the long side of the air suction adjusting plate 41, during the adjustment process, the connecting piece 431 will move along with the air suction adjusting plate 41, causing relative sliding between the connecting piece 431 and the lug 430 on the cylinder 11. After the adjustment is completed, the first bolt 432 passes through the mounting hole on the lug 430, and the first wing nut 433 is connected and fixed.

[0051] When a technician wants to adjust the air outlet adjusting assembly 5, that is, to adjust the air speed of the air outlet, only need to hold the air outlet adjusting plate 51 and rotate it so that the air outlet adjusting plate 51 rotates around the pin. After rotating to a suitable position, obviously, during the rotation process, the second bolt 521 slides along the arc length direction of the second arcuate waist-shaped hole 520 until the second bolt 521 aligns with the second threaded hole of the air outlet adjusting plate 51 and is screwed and fixed. Because it is at the air outlet, the air outlet adjusting plate 51 is greatly affected by the wind force. To ensure the fixing stability of the second locking assembly 52, then hold the third bolt 524 and pass it through the third arcuate waist-shaped hole 523 and connect it to the third threaded hole.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fan with adjustable radial air suction and rolling wings, characterized in that: The fan housing (1) comprises a cylinder (11) and an air outlet pipe (12), which are connected to each other to form a whistle-shaped structure; A winglet fan (2) is installed in the cylinder cavity of the cylinder (11), and an axial air suction port (3) is formed at the cylinder mouth of the cylinder (11). Along the rotation direction of the winglet fan (2), a radial air suction port I (110) is provided on the cylinder (11) located at the rear side of the air outlet pipe (12), and the radial air suction port I (110) is covered with an air suction adjustment plate (41), and a radial air suction port II (410) is provided on the plate surface of the air suction adjustment plate (41). A guide member (42) is arranged on the cylinder (11) located at the outer edge of the air suction adjustment plate (41), and the air suction adjustment plate (41) and the guide member (42) form a sliding guide cooperation to change the overlap opening size of the radial air suction port II (410) and the radial air suction port I (110), and the air suction adjustment plate (41) is fixed by a first locking component (43) to perform a radial air suction volume adjustment operation; An air outlet adjustment component (5) is arranged at the air outlet (a) of the air outlet pipe (12) for adjusting the wind speed and air volume at the air outlet.

2. A radially suction adjustable scroll wing fan according to claim 1, characterized in that: The air suction adjustment plate (41) is an arc-shaped plate, and the inner arc surface is fitted on the outer wall of the cylinder (11). The length of the air suction adjustment plate (41) is parallel to the axis of the cylinder (11).

3. A fan with adjustable radial air suction wings according to claim 1, characterized in that: The guide member (42) is a plurality of trapezoidal corner brackets, which are arranged on the outer wall of the cylinder (11) along the long side of the air suction adjustment plate (41), the trapezoidal corner brackets are in a Z shape, and the trapezoidal corner brackets and the cylinder (11) are combined to form a slideway (420), and the slideway (420) and the long side of the air suction adjustment plate (41) form a slideway guide along the axial direction of the cylinder (11).

4. The fan with adjustable radial air suction wings according to claim 1, characterized in that: The radial air suction port I (110) and the radial air suction port II (410) are of the same shape and size, correspond to each other, and are evenly arranged along the axis direction of the cylinder (11). When the radial air suction port I (110) and the radial air suction port II (410) completely overlap, the radial air suction volume reaches a maximum value.

5. A radially suction adjustable scroll wing fan according to claim 4, characterized in that: The radial air suction port I (110) and the radial air suction port II (410) are both waist-shaped holes, and the length of the waist-shaped holes is parallel to the axis of the cylinder (11).

6. The radial air suction adjustable scroll wing fan according to claim 1, characterized in that: The first locking assembly (43) comprises an ear piece (430), a connecting piece (431), a first bolt (432) and a first butterfly nut (433); the connecting piece (431) is arranged along the long side of the air suction adjustment plate (41), and a long hole is provided on the connecting piece (431); the ear piece (430) is installed on the outer wall of the cylinder (11), and the ear piece (430) and the connecting piece (431) are in contact with each other; The first bolt (432) passes through the mounting hole on the ear piece (430), and the protruding end of the first bolt (432) forms a sliding fit with the long hole along the length direction of the hole, and is connected and fixed by the first butterfly nut (433).

7. The fan with adjustable radial air suction wings according to claim 1, characterized in that: The air outlet adjustment component (5) comprises an air outlet adjustment plate (51), which is arranged in the air outlet (a) along the length direction, so that two ends of the air outlet adjustment plate (51) respectively contact the two sides of the inner wall of the air outlet (a), and the contact surface is connected by a pin and fixed by a second locking component (52) to perform wind speed and air volume adjustment operations of the air outlet (a).

8. The fan with adjustable radial air suction wings according to claim 7, characterized in that: The second locking assembly (52) comprises a second arc-shaped waist hole (520) and a second bolt (521); the air outlet (a) is provided with a second arc-shaped waist hole (520), and the center of the second arc-shaped waist hole (520) is distributed on the axis of the pin; the end of the air outlet adjustment plate (51) is provided with a second threaded hole, and the air outlet adjustment plate (51) is adjusted so that the air outlet adjustment plate (51) rotates around the pin, and the second bolt (521) slides along the arc length direction of the second arc-shaped waist hole (520) until the second bolt (521) is aligned with the second threaded hole of the air outlet adjustment plate (51), and then is screwed together and fixed.

9. A fan with adjustable radial air suction wings according to claim 8, characterized in that: A third arc-shaped waist hole (523) is penetrated through the side wall of the air outlet (a) between the second arc-shaped waist hole (520) and the pin, and the third arc-shaped waist hole (523) is arranged concentrically with the second arc-shaped waist hole (520); a third threaded hole is correspondingly opened at the end of the air outlet adjustment plate (51), and a third bolt (524) passes through the third arc-shaped waist hole (523) and is connected to the third threaded hole to ensure the connection stability between the air outlet adjustment plate (51) and the air outlet pipe (12).

10. The fan with adjustable radial air suction wings according to claim 1, characterized in that: The scroll fan (2) comprises a group of fan webs (20), a fan shaft (21) and fan blades (22); the fan shaft (21) is coaxially arranged in the cylinder cavity of the cylinder (11); both ends of the fan shaft (21) are fixed in the cylinder (11) via a group of fan webs (20), and either end of the fan shaft (21) is driven by a motor to generate a rotational motion; and the fan shaft (21) is provided with fan blades (22).

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