A ventilation cage

Abstract

The present invention provides a ventilation cage, belonging to the technical field of ventilation equipment. It solves the problem of weak structural strength of existing ventilation cages. The ventilation cage includes a cage body with an air duct, and the cage body includes a plurality of long strip-shaped and upwardly arched frames, the plurality of frames are arranged in sequence and fixedly connected to each other, and the inner sides of the plurality of frames form the above-mentioned air duct, one side of the frame has external reinforcing ribs arranged along the length direction, and the other side has internal reinforcing ribs arranged along the length direction, and the external reinforcing ribs of the frame form an air outlet connected to the air duct with the internal reinforcing ribs of the adjacent frame on one side. The ventilation cage has a good ventilation effect on the basis of ensuring a high structural strength.

Description

Technical Field

[0001] The invention belongs to the technical field of ventilation equipment and relates to a ventilation cage. Background Art

[0002] The ventilation cage is a ventilation duct installed on the ground, which is connected to the wind source such as the fan. There are air outlets evenly opened on the ventilation cage. The airflow generated by the fan flows along the ventilation cage and is discharged from the air outlet. It is mainly used in room-type granaries and open-air bulk grain stacks. It can make the air flow evenly into the grain pile, and effectively implement multi-directional operations such as cooling, precipitation, fumigation, gas conditioning, conditioning, and elimination of residual toxins and odors on the grain. It is suitable for long-term storage of wheat, rice, corn, soybeans, etc. It is the most ideal ventilation equipment for the central reserve, national reserve, and local large grain depots.

[0003] The cross section of the ventilation cage is usually U-shaped, and the whole is long and covered on the ground. When in use, the grain pile will be directly piled on the top and side of the ventilation cage. Therefore, the ventilation cage must be able to achieve air outlet and have a large structural strength to avoid being collapsed. For this reason, a corresponding reinforcement structure will be set on the ventilation cage. For example, China's invention patent application (201810220628.0) discloses an above-ground ventilation cage, including a perforated plate and a base located on both sides of the perforated plate. The upper surface of the base is provided with positioning grooves, and the perforated plate is an inverted U-shaped The two sides are inserted into the positioning grooves of the base and fixed by fastening screws. The outer surface and inner surface of the orifice plate are each provided with offset grooves, and the grooves are of an inverted trapezoidal structure. Ventilation holes are provided on the upper bottom edge and the two sides of the trapezoidal structure. The ventilation cage directly processes the orifice plate used for opening the ventilation holes into a trapezoidal structure arranged once to improve the pressure-bearing capacity of the orifice plate. However, since the orifice plate is an integrated structure, the ventilation holes are directly opened on the orifice plate. The orifice plate is used for both support and opening, which weakens the structural strength of the orifice plate itself. Another example is a Chinese utility model patent application (application number: 01233950.4) which discloses an above-ground ventilation cage. The cage body is semi-cylindrical and has ventilation holes punched thereon. The ground-contacting edges of the ventilation cage are pulled by pull rods. The characteristic is that large and small ribs are provided at both ends of each cage. Although the structure has changed the reinforcement structure, with two sections of reinforcement ribs and a pull rod provided inside for pulling, the ventilation holes are also directly opened on the cage body used for support. The weakened cage body is prone to local deformation under pressure, affecting the air outlet effect. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems in the prior art and to provide a ventilation cage which has a better ventilation effect while ensuring a higher structural strength.

[0005] The object of the present invention can be achieved through the following technical solutions: a ventilation cage, comprising a cage body with an air duct, characterized in that the cage body comprises a plurality of long strip-shaped and upwardly arched frames, the plurality of frames are arranged in sequence and fixedly connected to each other, and the inner sides of the plurality of frames form the above-mentioned air duct, one side of the frames have external reinforcing ribs arranged along the length direction, and the other side has internal reinforcing ribs arranged along the length direction, and the external reinforcing ribs of the frames form air outlets connected to the air duct between the internal reinforcing ribs of the adjacent frames on one side.

[0006] The cage is installed on the ground of the granary, and the grain is piled on the ground and the outer surface of the cage. The air duct is connected to the wind source such as the fan, and the airflow in the duct is discharged through the air outlet to achieve drying and cooling of the grain. The cage is formed by a number of frames arranged in sequence, and each frame is in an upward arched state, so the frame has a large upward supporting capacity, and the two sides of the frame are respectively provided with external reinforcement ribs and internal reinforcement ribs, so the frame, external reinforcement ribs and internal reinforcement ribs can form a reinforced structure with a T-shaped, Z-shaped or cross-shaped cross-section, so that each frame has a higher load-bearing capacity, and when several frames are arranged in sequence, the cage has a higher load-bearing capacity and structural strength. At the same time, compared with the traditional design in which the air outlet is directly opened on the frame, resulting in the weakening of the frame strength, the adjacent frames of the present invention are designed with intervals, with a gap between the two, and there is a gap between adjacent frames. The air outlet is formed between the outer reinforcement ribs and the inner reinforcement ribs, so it will not destroy the integrity of the frame, thereby ensuring the bearing capacity of the frame after the air outlet is formed, and further ensuring the structural strength of the cage. The air outlet formed by the outer reinforcement ribs and the inner reinforcement ribs has the same length as the frame, and can achieve simultaneous air outlet from both sides to the top of the cage, which not only has a large air outlet volume, but also makes the air outlet of the entire cage uniform and has a better air outlet effect. Of course, since the grain will generate a large pressure on the top of the cage after being piled up, and the pressure on both sides of the cage is relatively small, the air outlets on both sides of the cage have smaller resistance to air outlet and a better air outlet effect.

[0007] In the above ventilation cage, the outer reinforcing ribs are located outside the inner reinforcing ribs, the outer reinforcing rib end face of the frame is opposite to the side face of the adjacent frame on one side and forms an air outlet gap, the side face of the frame is opposite to the inner reinforcing rib end face of the adjacent frame on one side and forms an air inlet gap, and the air outlet is connected to the air inlet gap and the air outlet gap respectively. The frame, the outer reinforcing ribs and the inner reinforcing ribs form a structure with a Z-shaped cross section, which has a high structural strength. At the same time, the air outlet is not directly facing the air duct and the external grain. The airflow in the air duct needs to pass through the air inlet gap, the air outlet and the air outlet gap in sequence. Similarly, it is difficult for grain particles to directly pass through the air outlet and enter the air duct. The setting of the air outlet gap can prevent grain from getting stuck in the air outlet and affecting the air outlet, and also prevent grain particles from entering the air duct and affecting the ventilation volume of the air duct.

[0008] In the above ventilation cage, the inner side of the outer reinforcing rib is opposite to the air inlet gap, the outer side of the inner reinforcing rib is opposite to the air outlet gap, and the width of the air outlet gap is greater than the width of the air inlet gap. When grain particles fall into the air inlet gap under external pressure, the outer side of the inner reinforcing rib can support the grain particles to prevent the grain from getting stuck in the air outlet, and the width of the air outlet gap on the outer side is increased to compensate for the influence of the grain particles falling into the air outlet gap on the air outlet effect, and the width of the air inlet gap on the inner side is smaller, which can further prevent the grain particles from falling into the air duct through the air inlet gap, thereby ensuring the air outlet effect of the air outlet and the ventilation effect of the air duct.

[0009] In the above ventilation cage, the sum of the widths of the outer reinforcing ribs and the inner reinforcing ribs is equal to or greater than the spacing between two adjacent frames, and the air outlet is opposite to the side of the frame. That is, the gap between two adjacent frames can be completely covered by the outer reinforcing ribs and the inner reinforcing ribs, which ensures the structural strength of the frame and prevents grain particles from entering the air duct, thereby ensuring the ventilation effect. The structural design makes the air outlet opposite to the side of the frame, that is, the air outlet direction of the air outlet is parallel to the ventilation direction of the air duct. The air outlet is not directly facing the piled grain, but is discharged sideways, first entering the relatively large air outlet gap, so the air outlet resistance is small, thereby improving the air outlet effect.

[0010] In the above ventilation cage, the end faces of the outer reinforcing ribs and the inner reinforcing ribs are both inclined surfaces, and the end faces of the outer reinforcing ribs and the inner reinforcing ribs are located on the same plane, the width of the air inlet gap decreases from the inside to the outside, and the width of the air outlet gap gradually increases from the inside to the outside. That is, the airflow in the air duct passes through the air inlet gap, the air outlet and the air outlet gap, which are gradually increasing in space, in turn, so the resistance to air outlet is small. At the same time, the inclined design of the end face of the outer reinforcing rib can generate an oblique upward reaction force on the grain particles falling into the air outlet gap, so as to prevent the grain particles from getting stuck in the air outlet and affecting the air outlet effect.

[0011] In the ventilation cage described above, the outer side surface of the outer reinforcement ribs is flush with the outer edge of the frame, the inner side surfaces of several inner reinforcement ribs of the frame are flush and form the inner wall of the cage body, and the inner edges of several frames all protrude from the inner side surface of the inner reinforcement ribs and form guides arranged in sequence along the length direction of the air duct. The outer side surface of the outer reinforcement ribs is flush with the outer edge of the frame, so the cage body can have a relatively flat outer side surface, reducing the phenomenon of grain jamming, and each guide part surrounds the inner side surface of the cage body, and several guide parts are arranged in sequence along the ventilation direction of the air duct. Compared with the flat inner side surface, the guide part can evenly guide the airflow in the air duct into the air inlet gap, thereby improving the air outlet effect.

[0012] In the above ventilation cage, there are several reinforcing plates between one side surface of the frame and the inner side surface of the outer reinforcing ribs, the several reinforcing plates are arranged along the length direction of the frame, and the several reinforcing plates of the frame are all fixedly connected to the end surface of the inner reinforcing ribs of the adjacent frame on one side, and the reinforcing plates are all arranged vertically. The reinforcing plates can provide support for the outer reinforcing ribs and improve the structural strength of the frame. At the same time, the several frames are also fixedly connected to each other through the reinforcing plates, so that the outer reinforcing ribs, the frame and the inner reinforcing ribs form an integrated structure, thereby improving the structural strength of the entire cage.

[0013] In the above ventilation cage, the frame includes two side panels and two top panels, the side panels and the top panel are both in the shape of straight strips, the upper ends of the two top panels are relatively close to each other, tilted and fixedly connected, the upper ends of the two side panels are relatively close to each other, tilted and respectively fixedly connected to the lower ends of the two top panels, and the lower ends of the side panels on the same side of the frame are fixedly connected through a straight strip-shaped base. A triangular support structure is formed between the two top panels, which has a greater upward support capacity for the upper grain, and a trapezoidal support structure is formed between the two side panels, which has a higher outward support capacity for the grain on both sides, thereby improving the structural strength of the entire cage.

[0014] In the ventilation cage described above, the inner side of the cage top is also provided with a plurality of long strip support plates, which are arranged crosswise to form a grid, and the width direction of the support plates is arranged along the vertical direction, and the top plates of the plurality of the skeletons are fixedly connected to the upper edge of the support plates. The support plates strengthen the structure of the cage top, thereby improving the structural strength of the cage.

[0015] In the ventilation cage, the side of the frame at one end of the cage has a long strip of buckle plate along the length direction, and the buckle plate has a buckle groove with an opening facing outward, and the side of the frame at the other end of the cage has a long strip of plug-in plate along the length direction. When the two cages are connected, the plug-in plate of one cage can be inserted into the buckle groove of the other cage. The end of the cage is also provided with a locking member capable of locking the plug-in plate inserted into the buckle groove. The cages need to be connected to each other to form a ventilation system. The structural design of the buckle plate and the plug-in plate being buckled to each other can make the installation more convenient. At the same time, since the structural strength of the two ends of the cage is relatively weaker than that of the middle part, the buckle structure can form a double-layer plate support structure of the buckle plate and the plug-in plate at the docking position of the two cages, thereby improving the structural strength of the docking position of the two cages.

[0016] In the ventilation cage, the connector includes a columnar lock head, a through hole is vertically opened at the top of one end of the cage body with a buckle plate, the lock head is rotatably connected in the through hole, and a locking disk is provided at the lower end of the lock head, the outer edge of the locking disk has a protruding clamping part, and a clamping groove is provided on the side of the buckle plate, and when the plug-in plate of one cage body is inserted into the buckle groove of another cage body, the lock head can be rotated to make the clamping part clamped in the clamping groove. When the plug-in plate is inserted into the buckle groove, the clamping part can be clamped into the clamping groove by rotating the lock head, so as to prevent the buckle plate from being separated from the plug-in plate, and the two are easy to install and operate, and the connection is stable.

[0017] In the above ventilation cage, the lock head includes a connecting column and a knob, the locking disk is located at the lower end of the connecting column, and the upper edge of the connecting column is also provided with a snap-fitting convex edge in the circumferential direction, and the upper end surface of the snap-fitting convex edge is an introduction cone surface, and the upper end of the connecting column is provided with a connecting groove penetrating the outer circumferential surface in the axial direction, and the lower end of the knob is provided with a flat connecting portion, and the connecting portion is inserted into the connecting groove. The connecting column has elasticity at the end where the connecting groove is provided, so when assembling, the connecting column is first inserted into the through hole from the inside to the outside, and the end of the connecting column can be deformed radially inward under the action of the introduction cone surface, and the snap-fitting convex edge and the locking disk can limit the axial direction of the connecting column after passing through, and the knob is inserted into the connecting groove through the connecting portion, which is used to rotate the connecting column, and at the same time, the connecting portion is tightened in the connecting sleeve to prevent the connecting column from falling off and improve the connection stability.

[0018] Compared with the prior art, this ventilation cage has the following advantages:

[0019] 1. Since external reinforcement ribs and internal reinforcement ribs are provided on both sides of the frame, the frame, external reinforcement ribs and internal reinforcement ribs can form a reinforced structure with a Z-shaped cross section, so that each frame has a higher load-bearing capacity, and when several frames are arranged in sequence, the cage body has a higher load-bearing capacity and structural strength.

[0020] 2. Since the air outlet is formed between the two outer reinforcing ribs and the inner reinforcing ribs, the integrity of the frame will not be destroyed, thereby ensuring the bearing capacity of the frame after the air outlet is formed, and further ensuring the structural strength of the cage. At the same time, the air outlet has a large air volume, and the air outlet of the entire cage is uniform, with a better air outlet effect.

[0021] 3. When grain particles fall into the air inlet gap under external pressure, the outer side surface of the inner reinforcing ribs can support the grain particles to prevent the grain from getting stuck in the air outlet. The structural design makes the air outlet opposite to the side of the frame, that is, the air outlet direction of the air outlet is parallel to the ventilation direction of the air duct. The air outlet is not directly facing the piled grain, but the air is discharged sideways, first entering the relatively large air outlet gap. Therefore, the air outlet resistance of the air outlet is small, which improves the air outlet effect.

[0022] 4. During assembly, the two cage bodies are buckled together by a buckle plate and a plug-in plate, and locked by rotating the lock, thus ensuring the structural strength of the cage body docking position and making the operation convenient and quick.

[0023] 5. Since the cage is made of nylon plastic, it can avoid rust after ventilation and moisture, and can also resist the corrosion of phosphine gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural diagram of the ventilation cage.

[0025] Figure 2 yes Figure 1 A magnified view of the structure at center.

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure after the cage is partially cut open.

[0027] Figure 4 yes Figure 3 A magnified view of the structure at point B.

[0028] Figure 5 It is a structural side view of the ventilation cage.

[0029] Figure 6 yes Figure 5 Structural cross-section view at CC in the middle.

[0030] Figure 7 yes Figure 6 Enlarged view of the structure at D in the middle.

[0031] Figure 8 yes Figure 5 Local structural cross-sectional view at EE in the middle.

[0032] Fig. 9 It is a cross-sectional view of the cage structure.

[0033] Fig.10 yes Fig. 9 Enlarged view of the structure at F in the middle.

[0034] Fig.11 It is a partial structural cross-sectional view of the lock head after the two cage bodies are butt-jointed.

[0035] In the figure, 1, cage body; 11, air duct; 12, air outlet; 13, air outlet gap; 14, air inlet gap; 15, through hole; 2, frame; 21, external reinforcement rib; 22, internal reinforcement rib; 23, air guide part; 24, side plate part; 25, top plate part; 3, reinforcement plate; 4, base; 5, support plate; 6, buckle plate; 61, buckle groove; 62, card slot; 7, plug-in plate; 8, lock head; 81, connecting column; 811, locking disk; 812, card connection part; 813, card connection convex edge; 814, guide cone; 815, connecting groove; 82, knob; 821, connecting part. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0037] like Figure 1 , Figure 2 As shown, a ventilation cage includes a cage body 1, which is made of nylon plastic. The cage body 1 includes a plurality of long strip frames 2, which are all arched upwards, and the plurality of frames 2 are arranged in sequence and fixedly connected to each other. The inner sides of the plurality of frames 2 form air ducts 11 with two ends passing through. The frames 2 are plate-shaped and combined with Figure 3 , Figure 4 As shown, one side of the skeleton 2 has external reinforcing ribs 21 arranged along the length direction, and the other side of the skeleton 2 has internal reinforcing ribs 22 arranged along the length direction. The external reinforcing ribs 21 of the skeleton 2 form air outlets 12 with the internal reinforcing ribs 22 of the adjacent skeleton 2 on one side, and the air outlets 12 are connected to the air ducts 11.

[0038] Specifically, combined Figure 5 , Figure 6 , Figure 7 As shown, the outer reinforcing rib 21 is located outside the inner reinforcing rib 22, the end face of the outer reinforcing rib 21 of the frame 2 is opposite to the side face of the adjacent frame 2 on one side and forms an air outlet gap 13, the side face of the frame 2 is opposite to the end face of the inner reinforcing rib 22 of the adjacent frame 2 on one side and forms an air inlet gap 14, and the air outlet 12 is connected to the air inlet gap 14 and the air outlet gap 13 respectively. The inner side face of the outer reinforcing rib 21 is opposite to the air inlet gap 14, and the outer side face of the inner reinforcing rib 22 is opposite to the air outlet gap 13, and the width of the air outlet gap 13 is greater than the width of the air inlet gap 14. The sum of the widths of the outer reinforcing rib 21 and the inner reinforcing rib 22 is equal to the distance between the two adjacent frames 2, and the air outlet 12 is opposite to the side face of the frame 2, combined with the Figure 8As shown, the end faces of the outer reinforcing ribs 21 and the inner reinforcing ribs 22 are both inclined surfaces, and the end faces of the outer reinforcing ribs 21 and the inner reinforcing ribs 22 are located on the same plane, the width of the air inlet gap 14 decreases from the inside to the outside, and the width of the air outlet gap 13 gradually increases from the inside to the outside. The outer side surface of the outer reinforcing ribs 21 is flush with the outer edge of the frame 2, the inner side surfaces of the inner reinforcing ribs 22 of several frames 2 are flush and form the inner wall of the cage body 1, the inner edges of several frames 2 are protruding from the inner side surfaces of the inner reinforcing ribs 22 and forming the guide parts 23, and the guide parts 23 are arranged in sequence along the length direction of the air duct 11. There are several reinforcing plates 3 between one side side of the frame 2 and the inner side surface of the outer reinforcing ribs 21, the reinforcing plates 3 are all vertically arranged, the several reinforcing plates 3 are arranged along the length direction of the frame 2, and the several reinforcing plates 3 of the frame 2 are all fixedly connected to the end surface of the inner reinforcing rib 22 of the adjacent frame 2 on one side.

[0039] Combination Fig. 9 , Fig.10 As shown, the frame 2 includes two side panels 24 and two top panels 25, both of which are in the shape of straight strips, the upper ends of the two top panels 25 are relatively close to each other, tilted and fixedly connected, a triangular support structure is formed between the two top panels 25, the upper ends of the two side panels 24 are relatively close to each other, tilted and respectively fixedly connected to the lower ends of the two top panels 25, a trapezoidal support structure is formed between the two side panels 24, wherein the inclination of the top panel 25 is greater than the inclination of the side panel 24, and the lower ends of the side panels 24 on the same side of several frames 2 are fixedly connected through a straight strip-shaped base 4. The inner side of the top of the cage body 1 also has several long strip-shaped support plates 5, which are arranged in a grid shape in a cross-intersection manner, and the width direction of the support plates 5 is arranged in the vertical direction, and the top panels 25 of several frames 2 are fixedly connected to the upper edge of the support plates 5.

[0040] Combination Fig.11As shown, a long strip-shaped buckle plate 6 is provided on the side surface of the frame 2 at one end of the cage body 1 along the length direction. The cross section of the buckle plate 6 is U-shaped and has a buckle groove 61 opening outward. A long strip-shaped plug-in plate 7 is provided on the side surface of the frame 2 at the other end of the cage body 1 along the length direction. When the two cage bodies 1 are connected to each other, the plug-in plate 7 of one cage body 1 can be inserted into the buckle groove 61 of the other cage body 1. A locking member is also provided at one end of the cage body 1, and the locking member can lock the plug-in plate 7 inserted into the buckle groove 61. Specifically, the connecting member includes a columnar lock head 8, and the lock head 8 includes a connecting column 81 and a knob 82. A through hole 15 is vertically opened at the top of one end of the cage body 1 with the buckle plate 6. The connecting column 81 is rotatably connected in the through hole 15. The lower end of the connecting column 81 has a locking disk 811, and the upper end edge of the connecting column 81 also has a circumferential snap-fitting protrusion 813, the upper end face of which is an inlet cone 814, and the upper end of the connecting column 81 is provided with a connecting groove 815 that penetrates the outer circumference along the axial direction, and the lower end of the knob 82 has a flat connecting portion 821, and the connecting portion 821 is inserted into the connecting groove 815. The snap-fitting protrusion 813 and the locking disk 811 can axially limit the connecting column 81, and the outer edge of the locking disk 811 has a protruding snap-fitting portion 812, and a snap-fitting groove 62 is provided on the side of the snap-fitting plate 6, and when the plug-in plate 7 of one cage body 1 is inserted into the snap-fitting groove 61 of another cage body 1, rotating the knob 82 can make the snap-fitting portion 812 snap into the snap-fitting groove 62.

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0042] Although the terms such as cage 1, air duct 11, air outlet 12 are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A ventilation cage, comprising a cage body (1) having an air duct (11), characterized in that: The cage body (1) comprises a plurality of long strip-shaped and upwardly arched frames (2), the plurality of frames (2) are arranged in sequence at intervals and are fixedly connected to each other, and the inner sides of the plurality of frames (2) form the above-mentioned air duct (11), the arrangement direction of the plurality of frames (2) is arranged along the length direction of the air duct (11), one side of the frame (2) has an external reinforcing rib (21) arranged along the length direction, and the other side has an internal reinforcing rib (22) arranged along the length direction, and the external reinforcing ribs (21) of the frame (2) are all An air outlet (12) connected to the air duct (11) is formed between the inner reinforcing ribs (22) of the adjacent frame (2) on one side; the frame (2) includes two side plates (24) and two top plates (25); the inner side of the top of the cage body (1) also has a plurality of long strip-shaped support plates (5); the plurality of support plates (5) are arranged to cross each other in a grid shape, and the width direction of the support plates (5) is arranged in the vertical direction; the top plates (25) of the plurality of frames (2) are fixedly connected to the upper edge of the support plates (5).

2. The ventilation cage according to claim 1, characterized in that: The outer reinforcing rib (21) is located on the outside of the inner reinforcing rib (22); the end face of the outer reinforcing rib (21) of the frame (2) is opposite to the side face of the adjacent frame (2) on one side and forms an air outlet gap (13); the side face of one side of the frame (2) is opposite to the end face of the inner reinforcing rib (22) of the adjacent frame (2) on one side and forms an air inlet gap (14); the air outlet (12) is respectively connected to the air inlet gap (14) and the air outlet gap (13).

3. The ventilation cage according to claim 2, characterized in that: The inner side surface of the outer reinforcing rib (21) is opposite to the air inlet gap (14), and the outer side surface of the inner reinforcing rib (22) is opposite to the air outlet gap (13), and the width of the air outlet gap (13) is greater than the width of the air inlet gap (14).

4. The ventilation cage according to claim 3, characterized in that: The sum of the widths of the outer reinforcing ribs (21) and the inner reinforcing ribs (22) is equal to or greater than the spacing between two adjacent frames (2), and the air outlet (12) is opposite to the side surface of the frame (2).

5. The ventilation cage according to claim 2, 3 or 4, characterized in that: The end faces of the outer reinforcing rib (21) and the inner reinforcing rib (22) are both inclined surfaces, and the end faces of the outer reinforcing rib (21) and the inner reinforcing rib (22) are located on the same plane, the width of the air inlet gap (14) gradually decreases from the inside to the outside, and the width of the air outlet gap (13) gradually increases from the inside to the outside.

6. The ventilation cage according to claim 2, 3 or 4, characterized in that: The outer side surface of the outer reinforcing rib (21) is flush with the outer edge of the frame (2), the inner side surfaces of several inner reinforcing ribs (22) of the frame (2) are flush and form the inner wall of the cage body (1), and the inner edges of several inner reinforcing ribs (22) protrude from the inner side surface of the inner reinforcing rib (22) and form a guide portion (23) arranged in sequence along the length direction of the air duct (11).

7. The ventilation cage according to claim 2, 3 or 4, characterized in that: A plurality of reinforcing plates (3) are provided between one side surface of the frame (2) and the inner side surface of the outer reinforcing rib (21); the plurality of reinforcing plates (3) are arranged along the length direction of the frame (2); and the plurality of reinforcing plates (3) of the frame (2) are all fixedly connected to the end surface of the inner reinforcing rib (22) of an adjacent frame (2) on one side; and the plurality of reinforcing plates (3) are all vertically arranged.

8. The ventilation cage according to claim 2, 3 or 4, characterized in that: The side surface of the frame (2) at one end of the cage body (1) is provided with a long strip-shaped buckle plate (6) along the length direction, and the buckle plate (6) has a buckle groove (61) opening outward. The side surface of the frame (2) at the other end of the cage body (1) is provided with a long strip-shaped plug-in plate (7) along the length direction. When the two cage bodies (1) are connected to each other, the plug-in plate (7) of one cage body (1) can be inserted into the buckle groove (61) of the other cage body (1). One end of the cage body (1) is also provided with a locking member capable of locking the plug-in plate (7) inserted into the buckle groove (61).

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