Ventilation device for poultry farm

Abstract

The utility model relates to fan technical field discloses a kind of poultry farm ventilation device, including fan shell body, motor is fixedly installed on fan shell body top, motor is electrically connected with external main controller by cable, transmission box is fixedly installed in the central position in fan shell body, the transmission shaft input end pulley of transmission box is driven connection with the pulley of motor output end by belt, the transmission shaft output end fixedly installed in transmission box has variable angle fan blade, and variable angle fan blade is also electrically connected with external main controller by cable.In the central position of protective net, a rotating shaft is rotatably installed by center plate and shaft seat, the transmission block is provided on one end of rotating shaft and inserted into first protective shell, so that a plurality of abutting blocks in first protective shell and second protective shell are matched to realize that rotating shaft in transmission box is preliminarily started at low speed or gradually reduces the speed and stops when driving rotating shaft to rotate, so that rotating shaft drives brush rod to clean the adhering matter or clogging on one side of protective net.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a ventilation device for poultry farms. Background Technology

[0002] Ventilation equipment in breeding farms is a key facility for regulating the air environment inside the barns. It mainly includes axial flow fans, centrifugal fans, water curtain systems and ventilation ducts, while axial flow fans are responsible for forced exhaust and rapid discharge of harmful gases such as ammonia.

[0003] A protective net is usually installed at the air inlet of the fan to prevent foreign objects (such as leaves, debris, and small animals) from being sucked in, avoid damage or jamming of the impeller, and ensure safe operation of the equipment. When air flows through, dust, lint, and other particulate matter are easily intercepted. Long-term accumulation will clog the mesh, increase air intake resistance, reduce air intake volume, and affect the fan's ventilation efficiency. Therefore, the existing Chinese utility model patent with publication number CN220369234U, "A Ventilation Device for a Livestock Farm," uses a brush cleaning mechanism that rotates on the outside of a rotating rod. When the fan is ventilating, the rotating rod drives the brush cleaning mechanism to rotate and clean one side of the filter screen. However, when the fan is running at high speed, the brush rotates continuously with the rotating rod, which can easily cause wear on the filter screen due to long-term friction, shortening its service life. In addition, after the lint attached to the brush accumulates to a certain extent, the cleaning ability decreases, and the load on the rotating rod may even increase due to debris entanglement, affecting the stability of the fan operation. Frequent manual cleaning of the brush is also required, increasing maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a ventilation device for poultry farms, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A ventilation device for poultry farms includes a fan housing. A motor is fixedly installed on the top of the fan housing and electrically connected to an external controller via a cable. A transmission box is fixedly installed at the center of the fan housing. The input pulley of the transmission shaft of the transmission box is connected to the output pulley of the motor via a belt drive. A variable angle fan blade is fixedly installed at the output end of the transmission shaft in the transmission box, and the variable angle fan blade is also electrically connected to the external controller via a cable. A protective net is fixedly installed at the air inlet of the fan housing. A center plate is fixedly installed at the center of the protective net. A shaft seat is fixedly installed on one side of the center plate. A rotating shaft is rotatably installed in the shaft seat. A brush rod is fixedly installed at one end of the rotating shaft. A linkage is also provided at the input end of the transmission shaft of the transmission box. The linkage further includes a first protective shell and a second protective shell, and multiple abutment blocks are movably installed in the first and second protective shells.

[0007] As a further preferred embodiment of this utility model, the center position of one side of the second protective shell is rotatably and fixedly connected to the input end of the transmission box.

[0008] As a further preferred embodiment of this utility model, a plurality of first installation chambers are fixedly installed on the inner side of the first protective shell, and the first protective shell located in the first installation chamber is provided with a sliding groove.

[0009] As a further preferred embodiment of this utility model, a guide shaft is fixedly installed on the inner contour of the first protective shell inside the first installation chamber. A compression spring is fitted on the guide shaft. The guide shaft can guide the compression spring to extend and retract, and the compression spring provides the power condition for the resetting of the abutment block.

[0010] As a further preferred embodiment of this utility model, a plurality of second mounting chambers are fixedly installed on the inner side of the second protective shell. The number of the second mounting chambers is the same as that of the first mounting chamber. The sliding groove located on the inner side of the second mounting chamber is also provided with a sliding groove. After the first mounting chamber on the inner side of the first protective shell and the second mounting chamber on the inner side of the second protective shell are combined with each other, the conditions for the installation and guiding movement of the abutment block can be provided.

[0011] As a further preferred embodiment of this utility model, sliders are fixedly installed on both sides of the abutment block. The first protective shell is inserted between the corresponding first and second mounting chambers. One side of the slider is slidably connected in the corresponding groove. The center of the slider is a pivot shaft hole inserted into the guide shaft. One end of the compression spring abuts against the abutment block, and the other end abuts against the inner contour of the first protective shell. The arrangement of multiple abutment blocks can cooperate with the guide shaft to transmit the power of the transmission box rotation to the rotating shaft, thereby driving the rotating shaft to rotate synchronously when the transmission box starts.

[0012] As a further preferred embodiment of this utility model, a transmission block is fixedly installed at one end of the rotating shaft. The longitudinal section of the transmission block is a regular hexagon. Multiple connecting grooves are opened on the outer side of the transmission block. One end of the transmission block extends through the first protective shell and into the first protective shell. The connecting grooves are interlocked with one end of the corresponding contact block. When the motor drives the transmission shaft in the transmission box to rotate initially through the transmission mechanism, it can cooperate with the first protective shell, the second protective shell, and the contact block to drive the transmission block to rotate. This allows the transmission block to drive the brush rod to move axially along one side of the protective net through the rotating shaft to achieve automatic cleaning. When the speed of the transmission shaft in the transmission box increases, the centrifugal force of the rotation of the first and second protective shells is used to centrifugally shift the contact block towards the outline position of the first protective shell, thereby causing the contact block to separate from the transmission block and not continue to drive the transmission block and the rotating shaft to rotate at high speed.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this invention, a rotating shaft is rotatably mounted at the center of the protective net via a center plate and a shaft seat. One end of the rotating shaft is equipped with a transmission block that is inserted into the first protective shell. This, in conjunction with multiple abutting blocks in the first and second protective shells, enables the rotating shaft to rotate when it starts at a low speed or gradually decreases and stops. This allows the rotating shaft to drive the brush rod to clean the attachments or blockages on one side of the protective net. Furthermore, when the motor drives the variable-angle fan blades to rotate at high speed through the transmission mechanism and the transmission box, centrifugal force is used to disengage the abutting blocks from the transmission blocks, preventing the rotating shaft from continuously rotating at high speed and extending the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a first side view of the main structure of this utility model;

[0016] Figure 2 This is a second side view of the main structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the disassembled structure of the transmission box and the center plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the disassembled structure of the linkage of this utility model;

[0019] Figure 5 This is a schematic diagram of the second protective shell structure of this utility model.

[0020] In the diagram: 1. Fan housing; 2. Motor; 3. Transmission box; 4. Protective net; 5. Center plate; 6. Shaft seat; 7. Rotating shaft; 8. Brush rod; 9. Linkage device; 10. First protective shell; 11. Second protective shell; 12. Abutment block; 13. Variable angle fan blade; 14. First mounting chamber; 15. Second mounting chamber; 16. Slide groove; 17. Guide shaft; 18. Compression spring; 19. Slider; 20. Transmission block; 21. Connecting groove. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1-5As shown, the present invention provides a ventilation device for poultry farms, including a fan housing 1. A motor 2 is fixedly installed on the top of the fan housing 1. The motor 2 is electrically connected to an external main controller via a cable. A transmission box 3 is fixedly installed at the center of the fan housing 1. The pulley at the input end of the transmission shaft of the transmission box 3 is connected to the pulley at the output end of the motor 2 via a belt drive. A variable angle fan blade 13 is fixedly installed at the output end of the transmission shaft in the transmission box 3, and the variable angle fan blade 13 is also electrically connected to an external main controller via a cable. A protective net 4 is fixedly installed at the air inlet end of the fan housing 1. A center plate 5 is fixedly installed at the center of the protective net 4. A shaft seat 6 is fixedly installed on one side of the center plate 5. A rotating shaft 7 is rotatably installed in the shaft seat 6. A brush rod 8 is fixedly installed at one end of the rotating shaft 7. A linkage 9 is also provided at the input end of the transmission shaft of the transmission box 3. The linkage 9 also includes a first protective shell 10 and a second protective shell 11. Multiple abutment blocks 12 are movably installed in the first protective shell 10 and the second protective shell 11.

[0023] like Figures 4-5 As shown, the center of one side of the second protective shell 11 is rotatably fixedly connected to the input end of the transmission box 3. Multiple first mounting chambers 14 are fixedly installed inside the first protective shell 10. The first protective shell 10 located within the first mounting chamber 14 has a sliding groove 16. A guide shaft 17 is fixedly installed on the inner contour of the first protective shell 10 within the first mounting chamber 14. A compression spring 18 is fitted on the guide shaft 17. The guide shaft 17 can guide the extension and retraction of the compression spring 18, and the compression spring 18 provides the power condition for the reset of the abutment block 12. Multiple second mounting chambers 15 are fixedly installed inside the second protective shell 11. The number of second mounting chambers 15 is the same as that of the first mounting chambers 14. The sliding groove 16 located inside the second mounting chamber 15 also has a sliding groove 16. After the first mounting chamber 14 inside the protective shell 10 and the second mounting chamber 15 inside the second protective shell 11 are combined, they can provide the conditions for the installation and guiding movement of the abutment block 12. The abutment block 12 is fixedly installed on both sides. The first protective shell 10 is inserted between the corresponding first mounting chamber 14 and second mounting chamber 15. One side of the slider 19 is slidably connected in the corresponding slide groove 16. The center of the slider 19 is a pivot shaft hole inserted into the guide shaft 17. One end of the compression spring 18 abuts against the abutment block 12, and the other end abuts against the inner contour of the first protective shell 10. The arrangement of multiple abutment blocks 12 can cooperate with the guide shaft 17 to transmit the power of the transmission box 3 to the rotating shaft 7, so that the rotating shaft 7 will rotate synchronously when the transmission box 3 is started.

[0024] like Figure 4As shown, a transmission block 20 is fixedly installed at one end of the rotating shaft 7. The longitudinal section of the transmission block 20 is a regular hexagon. Multiple connecting slots 21 are provided on the outer side of the transmission block 20. One end of the transmission block 20 extends through the first protective shell 10 and into the first protective shell 10. The connecting slots 21 and the corresponding abutment blocks 12 are interlocked and connected. When the motor 2 drives the transmission shaft in the transmission box 3 to rotate initially through the transmission mechanism, it can cooperate with the first protective shell 10, the second protective shell 11 and the abutment blocks 12 to drive the transmission block 20 to rotate. This allows the transmission block 20 to drive the brush rod 8 to move axially along one side of the protective net 4 through the rotating shaft 7 to achieve automatic cleaning. When the speed of the transmission shaft in the transmission box 3 increases, the centrifugal force of the rotation of the first protective shell 10 and the second protective shell 11 is used to centrifugally shift the abutment blocks 12 towards the contour position of the first protective shell 10, thereby causing the abutment blocks 12 to separate from the transmission block 20 and not continue to drive the transmission block 20 and the rotating shaft 7 to rotate at high speed.

[0025] It should be noted that this utility model is a ventilation device for poultry farms. The external controller starts the motor 2 via a cable. The output pulley of the motor 2 drives the input pulley of the transmission shaft of the transmission box 3 to rotate via a belt. The output end of the transmission shaft in the transmission box 3 drives the variable angle fan blade 13 to rotate. The external controller can adjust the angle of the variable angle fan blade 13 to achieve back-blowing. This, combined with the brush rod 8, improves the cleaning quality of the protective net 4. During ventilation, the input end of the transmission shaft of the transmission box 3 will drive the linkage 9 to operate. That is, the second protective shell 11 of the linkage 9 is rotated and fixed to the input end of the transmission box 3. When the transmission shaft in the transmission box 3... When the rotating shaft starts at a low speed or gradually slows down and stops, the contact block 12, under the action of the compression spring 18, inserts into the connecting groove 21 on the outside of the transmission block 20 at one end of the rotating shaft 7. The transmission block 20 drives the rotating shaft 7 to rotate, which in turn causes the rotating shaft 7 to rotate within the bearing seat 6 and drive the brush rod 8 to rotate. Thus, the brush rod 8 moves axially along one side of the protective net 4 to perform cleaning operations. However, when the transmission box 3 rotates at high speed, the centrifugal force generated by the rotation of the first protective shell 10 and the second protective shell 11 causes the contact block 12 to overcome the elastic force of the compression spring 18 and shift towards the contour, disengaging from the transmission block 20. The brush rod 8 then stops working, avoiding continuous friction damage to the protective net 4.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A ventilation device for poultry farms, characterized in that: The device includes a fan housing (1), on the top of which a motor (2) is fixedly mounted. The motor (2) is electrically connected to an external controller via a cable. A transmission box (3) is fixedly mounted at the center of the fan housing (1). The input pulley of the transmission shaft of the transmission box (3) is connected to the output pulley of the motor (2) via a belt drive. A variable angle fan blade (13) is fixedly mounted at the output end of the transmission shaft inside the transmission box (3). The variable angle fan blade (13) is also electrically connected to an external controller via a cable. The fan housing (1) contains... A protective net (4) is fixedly installed at the air intake end. A center plate (5) is fixedly installed at the center of the protective net (4). A bearing seat (6) is fixedly installed on one side of the center plate (5). A rotating shaft (7) is rotatably installed inside the bearing seat (6). A brush rod (8) is fixedly installed at one end of the rotating shaft (7). A linkage (9) is also provided at the input end of the transmission shaft of the transmission box (3). The linkage (9) also includes a first protective shell (10) and a second protective shell (11). Multiple abutment blocks (12) are movably installed inside the first protective shell (10) and the second protective shell (11).

2. A ventilation device for poultry farms according to claim 1, characterized in that: The center position of one side of the second protective shell (11) is rotatably fixed to the input end of the transmission box (3).

3. A ventilation device for poultry farms according to claim 1, characterized in that: Multiple first installation chambers (14) are fixedly installed inside the first protective shell (10), and the first protective shell (10) located inside the first installation chamber (14) has a sliding groove (16).

4. A ventilation device for poultry farms according to claim 3, characterized in that: A guide shaft (17) is fixedly installed on the inner contour of the first protective shell (10) located in the first installation chamber (14), and a compression spring (18) is fitted on the guide shaft (17).

5. A ventilation device for poultry farms according to claim 4, characterized in that: Multiple second installation chambers (15) are fixedly installed inside the second protective shell (11). The number of second installation chambers (15) is the same as that of the first installation chamber (14). The slide groove (16) located inside the second installation chamber (15) is also provided with a slide groove (16).

6. A ventilation device for poultry farms according to claim 5, characterized in that: The abutment block (12) has sliders (19) fixedly installed on both sides. The first protective shell (10) is inserted between the corresponding first installation chamber (14) and the second installation chamber (15). One side of the slider (19) is slidably connected in the corresponding slide groove (16). The center of the slider (19) is a pivot shaft hole inserted into the guide shaft (17). One end of the compression spring (18) abuts against the abutment block (12), and the other end abuts against the inner contour of the first protective shell (10).

7. A ventilation device for poultry farms according to claim 2, characterized in that: One end of the rotating shaft (7) is fixedly installed with a transmission block (20). The longitudinal section of the transmission block (20) is a regular hexagon. Multiple connecting grooves (21) are opened on the outer side of the transmission block (20). One end of the transmission block (20) passes through the first protective shell (10) and extends into the first protective shell (10). The connecting groove (21) and the corresponding abutment block (12) are interlocked and connected.

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