Dustproof and insect-proof net cover for ventilation opening of breeding house

By using a roll-up assembly and an easy-to-remove locking assembly at the ventilation openings of the breeding shed, the problem of difficult disassembly and cleaning of the mesh cover in the existing technology has been solved, enabling convenient replacement and cleaning of the mesh curtain, improving the dust and insect prevention effect, and extending its service life.

CN224583941UActive Publication Date: 2026-08-04杨康华
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
杨康华
Filing Date
2025-09-12
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

The existing ventilation openings of the breeding sheds are fixed with screws, which are difficult to disassemble and clean and can easily cause the frame to deform. It is difficult for a single person to operate, and repeated disassembly can easily cause the screws to strip, affecting the dust and insect prevention effect.

Method used

Employing a winding assembly and an easy-to-remove locking assembly, the mesh curtain is wound up by the winding assembly, the pressing frame is fixed by the easy-to-remove locking assembly, and the debris collection assembly automatically scrapes away impurities, enabling convenient replacement and cleaning of the mesh curtain.

Benefits of technology

It enables convenient replacement and cleaning of the mesh curtain, avoids structural damage, improves dust and insect prevention, extends service life, and reduces operation difficulty.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224583941U_ABST
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Abstract

The utility model belongs to the technical field of breeding equipment, especially is dustproof and insectproof screen cover of breeding house air vent, include: ventilation pipe, ventilation pipe is fixed in the air vent department of breeding house, winding assembly, two winding assemblies are fixed to the two opposite outer side of ventilation pipe, screen curtain, screen curtain is correspondingly set in the port outside of ventilation pipe and is pressed tightly frame, utilize screen curtain to realize dustproof and insectproof, cooperate the winding effect of winding assembly, need not to disassemble can directly switch the position of screen curtain clean, avoid repeatedly disassembling to the damage of structure, pressed tightly frame cooperates easily dismantled locking assembly fixed connection ventilation pipe to realize pressing tightly to screen curtain, improve the stability of screen curtain, and avoid the gap between screen curtain and ventilation pipe influence dustproof and insectproof effect, the setting of miscellaneous component, when switching screen curtain through winding assembly, rubber scraping strip can scrape off the impurity on screen curtain automatically, and the impurity scraped off slides down to the collecting groove along the inclined surface of rubber scraping strip, and it is easy to concentrate cleaning.
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Description

Technical Field

[0001] This utility model belongs to the field of aquaculture equipment technology, specifically relating to a dustproof and insect-proof net cover for the ventilation opening of aquaculture shed. Background Technology

[0002] Currently, most ventilation openings in livestock sheds use a single mesh screen or ordinary filter screen to prevent dust and insects, but there are three major problems: traditional mesh screens are mostly fixed to the frame of the ventilation opening with screws, and tools are required for disassembly and cleaning, which is difficult for a single person to complete. Furthermore, repeated disassembly and cleaning can easily lead to deformation of the frame and stripping of screws.

[0003] To solve the above problems, this utility model proposes a dustproof and insect-proof net cover for the ventilation opening of a breeding house. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides a dustproof and insect-proof mesh cover for the ventilation opening of a livestock shed, which is easy to switch.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dustproof and insect-proof net cover for the ventilation opening of a livestock shed, comprising:

[0006] Ventilation pipe, which is fixed at the ventilation opening of the breeding house;

[0007] Two sets of winding assemblies are symmetrically fixed to the two opposite outer sides of the ventilation duct.

[0008] A mesh curtain, wherein the mesh curtain is disposed on the outside of the port of the ventilation duct, and both ends of the mesh curtain are respectively wound up by corresponding winding components; and

[0009] A clamping frame, which is installed on the outside of the port of the ventilation duct using an easy-to-remove locking component, is used to clamp the mesh curtain.

[0010] As a preferred embodiment of this utility model, the winding assembly includes:

[0011] A protective cover, which is detachably installed on the outer wall of the ventilation duct;

[0012] A winding rod is rotatably installed inside the protective cover, and the end of the net curtain is fixed to the winding rod with screws;

[0013] A fixed shaft is fixed to the end of the winding rod, and the fixed shaft passes through the protective cover to form a rotating structure;

[0014] The locking element locks the retractor to the protective cover.

[0015] As a preferred embodiment of this utility model, the locking element includes:

[0016] A handwheel, the handwheel being fixed to the end of the fixed shaft away from the take-up lever; and

[0017] The manual bolt has multiple locating grooves evenly distributed along the circumference on the end face of the protective cover. The manual bolt is installed on the handwheel by thread engagement, and the end of the manual bolt is embedded in the locating groove.

[0018] As a preferred embodiment of this utility model, the protective cover is installed on the outer wall of the ventilation pipe using bolts.

[0019] As a preferred embodiment of this utility model, the easy-to-disassemble locking component includes:

[0020] Positioning blocks, two of which are symmetrically fixed at both ends of the clamping frame, and notches are provided on the positioning blocks;

[0021] A first threaded rod, fixed to the outer wall of the ventilation pipe and penetrating the notch; and

[0022] The first wing nut is installed on the protruding end of the first threaded rod by means of threaded engagement.

[0023] As a preferred embodiment of this utility model, it further includes a junk collection component, and the junk collection component includes:

[0024] A collection trough, which is detachably mounted to the bottom end of the clamping frame; and

[0025] A rubber scraper is fixed at the top of the collection trough at an angle, and the top of the rubber scraper passes through the clamping frame and fits against the mesh curtain.

[0026] As a preferred embodiment of this utility model, the junk collector component further includes:

[0027] A support block, fixed to the bottom end of the clamping frame, is used to support the collection groove;

[0028] A second threaded rod, fixed to the bottom surface of the collecting trough and penetrating the support block; and

[0029] The second wing nut is installed on the protruding end of the second threaded rod by means of thread engagement.

[0030] As a preferred technical solution of this utility model, the mesh curtain is a multi-layer composite mesh structure of laminated pressing, which includes, from the outside to the inside, a nylon mesh with an aperture of 0.8mm, a stainless steel wire mesh with an aperture of 0.15mm, and a polyester woven mesh with an aperture of 1.5mm.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] 1. The net curtain is used to prevent dust and insects. With the winding component, the net curtain can be switched to a clean position without disassembly, avoiding damage to the structure caused by repeated disassembly.

[0033] 2. The clamping frame, together with the easy-to-remove locking component, is used to fix the ventilation pipe in order to clamp the net curtain, improve the stability of the net curtain, and avoid gaps between the net curtain and the ventilation pipe that would affect the dust and insect prevention effect;

[0034] 3. The impurity collection component is designed so that when the screen is switched via the winding component, the rubber scraper can automatically scrape off the impurities on the screen. The scraped impurities slide down the inclined surface of the rubber scraper into the collection trough, making it easy to collect and clean them.

[0035] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0036] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0037] Figure 1 This is a schematic diagram of the structure of this utility model;

[0038] Figure 2 This utility model Figure 1 A magnified structural diagram of the winding assembly in the diagram;

[0039] Figure 3 This utility model Figure 1 Enlarged structural diagram of the easy-to-disassemble locking component in the middle;

[0040] Figure 4 This is an isometric structural diagram of the dust collection component in this utility model.

[0041] In the diagram: 1. Ventilation duct; 2. Rewinding assembly; 21. Protective cover; 211. Positioning groove; 22. Rewinding rod; 23. Fixed shaft; 24. Handwheel; 25. Manual bolt; 3. Net curtain; 4. Pressing frame; 5. Easy-to-remove locking assembly; 51. Positioning block; 511. Notch; 52. First threaded rod; 53. First wing nut; 6. Miscellaneous material collection assembly; 61. Collection groove; 62. Rubber scraper; 63. Support block; 64. Second threaded rod; 65. Second wing nut. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figures 1-4 The present invention provides the following technical solution: a dustproof and insectproof net cover for the ventilation opening of a breeding house, comprising: a ventilation pipe 1, a winding assembly 2, a net curtain 3, and a pressing frame 4.

[0044] Furthermore, by Figure 1 As shown in this embodiment, the ventilation pipe 1 is fixed at the ventilation opening of the breeding house, and two sets of winding components 2 are symmetrically fixed on the two opposite outer sides of the ventilation pipe 1. The net curtain 3 is correspondingly set on the outside of the port of the ventilation pipe 1, and the two ends of the net curtain 3 are respectively wound up by the corresponding winding components 2. The clamping frame 4 is set on the outside of the port of the ventilation pipe 1 using an easy-to-remove locking component 5 to clamp the net curtain 3. After adopting the above scheme, when in use, under the normal ventilation requirements of the breeding house, the net cover is in the normal working mode. First, through the adjustment function of the winding component 2, the net curtain 3 is released to the state of completely covering the port of the ventilation pipe 1. At this time, the net curtain 3, with its high-density mesh structure, can effectively intercept dust, poplar catkins, flying insects and other impurities in the outside air, preventing pollutants from entering the breeding house, while not affecting the normal air circulation of the ventilation pipe 1, ensuring the freshness of the air and the cleanliness of the breeding environment inside the house.

[0045] Subsequently, the clamping frame 4 is fixed to the outside of the ventilation duct 1 port using the easy-to-remove locking component 5. The easy-to-remove locking component 5 can be quickly assembled, so that the clamping frame 4 fits tightly against the edge of the mesh curtain 3, and the mesh curtain 3 is firmly fixed at the ventilation duct 1 port. This prevents the mesh curtain 3 from shifting under the impact of strong winds or ventilation airflow, avoids gaps that would cause the dustproof and insectproof effects to fail, and at the same time reduces the vibration and wear of the mesh curtain 3 under the action of airflow, thus extending its service life.

[0046] After the mesh curtain 3 has been used for a period of time, the dust, insect remains and other impurities attached to its surface will affect the ventilation efficiency. When cleaning is required, first operate the easy-to-remove locking component 5 to release it from locking the clamping frame 4. At this time, the mesh curtain 3 is no longer constrained by the edge clamping force and is in a movable state.

[0047] Operate the two sets of winding components 2, so that the lower winding component 2 winds up the mesh curtain 3, while the upper winding component 2 releases the mesh curtain 3, and switches the clean part of the mesh curtain 3 to the port of the ventilation pipe 1. Therefore, the clean position of the mesh curtain 3 can be switched directly without disassembly, avoiding damage to the structure caused by repeated disassembly.

[0048] After the switching is completed, the clamping frame 4 is fixed to the outside of the ventilation duct 1 port by the easy-to-remove locking component 5, so that the clamping frame 4 fits tightly against the edge of the mesh curtain 3.

[0049] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, the winding assembly 2 includes: a protective cover 21, a winding rod 22, a fixed shaft 23, and a locking component. The locking component includes: a handwheel 24 and a manual bolt 25. The protective cover 21 is detachably installed on the outer wall of the ventilation duct 1. The winding rod 22 is rotatably installed inside the protective cover 21. The end of the mesh curtain 3 is fixed to the winding rod 22 with screws. The fixed shaft 23 is fixed to the end of the winding rod 22 and passes through the protective cover 21 to form a rotating structure. The winding rod 22 is locked to the protective cover 21 by the locking component. The handwheel 24 is fixed to the end of the fixed shaft 23 away from the winding rod 22. Multiple positioning grooves 211 are evenly distributed along the circumferential direction on the end face of the protective cover 21. The manual bolt 25... Bolt 25 is installed on handwheel 24 by thread engagement, and the end of manual bolt 25 is embedded in positioning groove 211. With the above scheme, when the net curtain 3 needs to be rolled up, the locking parts of the winding rod 22 must first be released (both locking parts need to be released). The operator loosens the manual bolt 25 on handwheel 24 by hand. Since manual bolt 25 is connected to handwheel 24 by thread engagement, manual bolt 25 will come outward along the thread direction during the loosening process. Its end embedded in positioning groove 211 on end face of protective cover 21 will gradually leave positioning groove 211. At this time, the locking state between winding rod 22 and protective cover 21 is released, and winding rod 22 has the condition to rotate around fixed axis 23.

[0050] Subsequently, the operator rotates the handwheel 24 fixed at the end of the fixed shaft 23. The handwheel 24 drives the fixed shaft 23 to rotate synchronously. Since the fixed shaft 23 is fixedly connected to the end of the winding rod 22, the winding rod 22 will rotate together with the fixed shaft 23 inside the protective cover 21. Since the end of the net curtain 3 is fixed to the winding rod 22 by screws, the rotation of the winding rod 22 will generate a circumferential traction force, which will gradually wrap the net curtain 3 around the outer wall of the winding rod 22.

[0051] When locking is required, the operator tightens the manual bolt 25 on the handwheel 24. The manual bolt 25 moves along the thread direction toward the end face of the protective cover 21, and its end is finally embedded in the corresponding positioning groove 211 on the end face of the protective cover 21.

[0052] Optionally, by Figure 1 and Figure 2 As shown in this embodiment, the protective cover 21 is installed on the outer wall of the ventilation pipe 1 using bolts. With the above solution, the installation stability of the protective cover 21 is ensured during use, while also making it easy to disassemble the protective cover 21 for maintenance.

[0053] When it is necessary to replace the mesh curtain 3, first unscrew the mounting bolts of the protective cover 21, and then unscrew the mounting screws of the mesh curtain 3.

[0054] Optionally, by Figure 1 and Figure 3 As shown in this embodiment, the easy-to-remove locking component 5 includes: a positioning block 51, a first threaded rod 52, and a first wing nut 53. The two positioning blocks 51 are symmetrically fixed at both ends of the clamping frame 4, and a notch 511 is provided on the positioning block 51. The first threaded rod 52 is fixed to the outer wall of the ventilation pipe 1 and passes through the notch 511. The first wing nut 53 is installed on the protruding end of the first threaded rod 52 by threaded engagement. With the above scheme, when using the clamping frame 4, the notch 511 is aligned with the first threaded rod 52, and the first threaded rod 52 passes through the notch 511. Then, the first wing nut 53 is tightened at the protruding end of the first threaded rod 52. The first wing nut 53 pushes the clamping frame 4 to clamp the mesh curtain 3, ensuring the stability of the mesh curtain 3.

[0055] In addition, if the thickness of the replaced mesh curtain 3 changes (such as changing from a regular dustproof mesh to a thicker insectproof mesh), the adaptation can be achieved by adjusting the tightening of the first butterfly nut 53.

[0056] Preferably, by Figure 1 and Figure 4 As shown, this embodiment also includes a debris collection component 6, which includes: a collection trough 61, a rubber scraper 62, a support block 63, a second threaded rod 64, and a second wing nut 65. The collection trough 61 is detachably installed at the bottom of the clamping frame 4. The rubber scraper 62 is fixed at the top of the collection trough 61 in an inclined shape. The top of the rubber scraper 62 passes through the clamping frame 4 and fits against the mesh curtain 3. The support block 63 is fixed at the bottom of the clamping frame 4 to support the collection trough 61. The second threaded rod 64 is fixed to the bottom surface of the collection trough 61 and passes through the support block 63. The second wing nut 65 is installed at the protruding end of the second threaded rod 64 by threaded engagement. With the above solution, the design of the rubber scraper 62 can guide the scraped debris to slide naturally down the inclined surface during use, avoiding accumulation at the top of the rubber scraper 62.

[0057] When switching to a clean mesh curtain 3, the lower winding assembly 2 winds up the mesh curtain 3, while the upper winding assembly 2 releases the mesh curtain 3. The clean part of the mesh curtain 3 corresponds to the port of the ventilation pipe 1. During this process, impurities adhering to the surface of the mesh curtain 3 will be scraped off by the rubber scraper 62 and slide down the inclined surface of the rubber scraper 62 into the collection groove 61 for collection.

[0058] When the impurities in the collection tank 61 reach a certain amount, the operator does not need to disassemble the clamping frame 4. Instead, the operator can directly grasp the butterfly wing of the second butterfly nut 65 and rotate it in the opposite direction to make it exit along the second threaded rod 64. After the second butterfly nut 65 is completely removed, the collection tank 61 is lifted upwards, which will cause the second threaded rod 64 to disengage from the hole of the support block 63. At the same time, the rubber scraper 62 is pulled out from the clamping frame 4, completing the disassembly of the collection tank 61 and making it easy to clean the collection tank 61.

[0059] Preferably, by Figure 1 As shown in this embodiment, the mesh curtain 3 is a multi-layer composite mesh structure with laminated pressing. From the outside to the inside, it includes a nylon mesh with a aperture of 0.8mm, a stainless steel wire mesh with a aperture of 0.15mm, and a polyester woven mesh with a aperture of 1.5mm. With the above solution, when in use, the nylon mesh preferentially intercepts large particles of impurities in the outside air, which can prevent large particles of impurities from directly impacting or clogging the inner fine mesh, reducing the cleaning pressure and wear of the inner mesh. On the other hand, the nylon material has excellent toughness and impact resistance, and can withstand slight external forces outside the breeding house.

[0060] Stainless steel wire mesh blocks common harmful micro-flying insects (such as aphids, whiteflies, thrips, etc.) in livestock sheds, preventing pests from entering the sheds and spreading diseases or contaminating feed; it can also filter fine dust in the air (such as feed dust and fine soil particles), reducing the irritation of fine dust to the respiratory tract of livestock and poultry (especially sensitive groups such as chicks and piglets), and reducing the incidence of respiratory diseases.

[0061] Polyester woven mesh mainly serves as a support layer. Polyester material has high tensile strength and fatigue resistance, which improves the stability of the entire mesh curtain 3.

[0062] Components not described in detail in this article are existing technologies.

[0063] The working principle and usage process of this utility model: When using the dustproof and insectproof net cover of this utility model, under the normal ventilation requirements of the breeding house, the net cover is in the normal working mode. First, through the adjustment function of the winding component 2, the net curtain 3 is released to the state of completely covering the port of the ventilation pipe 1. At this time, the net curtain 3, with its high-density mesh structure, can effectively intercept dust, poplar catkins, flying insects and other impurities in the outside air, preventing pollutants from entering the breeding house, while not affecting the normal air circulation of the ventilation pipe 1, ensuring the freshness of the air and the cleanliness of the breeding environment in the house;

[0064] Subsequently, the clamping frame 4 is fixed to the outside of the ventilation duct 1 port using the easy-to-remove locking component 5. The easy-to-remove locking component 5 can be quickly assembled, so that the clamping frame 4 fits tightly against the edge of the mesh curtain 3, and the mesh curtain 3 is firmly fixed at the ventilation duct 1 port. This prevents the mesh curtain 3 from shifting under the impact of strong winds or ventilation airflow, avoids gaps that would cause the dustproof and insectproof effects to fail, and at the same time reduces the vibration and wear of the mesh curtain 3 under the action of airflow, thus extending its service life.

[0065] After the mesh curtain 3 has been used for a period of time, the dust, insect remains and other impurities attached to its surface will affect the ventilation efficiency. When cleaning is required, first operate the easy-to-remove locking component 5 to release it from locking the clamping frame 4. At this time, the mesh curtain 3 is no longer constrained by the edge clamping force and is in a movable state.

[0066] Operate the two sets of winding components 2, so that the lower winding component 2 winds up the mesh curtain 3, while the upper winding component 2 releases the mesh curtain 3, and switches the clean part of the mesh curtain 3 to the port of the ventilation pipe 1. Therefore, the clean position of the mesh curtain 3 can be switched directly without disassembly, avoiding damage to the structure caused by repeated disassembly.

[0067] During this period, impurities adhering to the surface of the mesh curtain 3 will be scraped off by the rubber scraper 62 and slide down the inclined surface of the rubber scraper 62 into the collection trough 61 for collection.

[0068] After the switching is completed, the clamping frame 4 is fixed to the outside of the ventilation pipe 1 port using the easy-to-remove locking component 5, so that the clamping frame 4 fits tightly against the edge of the mesh curtain 3.

[0069] When the impurities in the collection tank 61 reach a certain amount, the operator does not need to disassemble the clamping frame 4. Instead, the operator can directly grasp the butterfly wing of the second butterfly nut 65 and rotate it in the opposite direction to make it exit along the second threaded rod 64. After the second butterfly nut 65 is completely removed, the collection tank 61 is lifted upwards, which will cause the second threaded rod 64 to disengage from the hole of the support block 63. At the same time, the rubber scraper 62 is pulled out from the clamping frame 4, completing the disassembly of the collection tank 61 and making it easy to clean the collection tank 61.

[0070] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dustproof and insect-proof net cover for a ventilation opening of a livestock house, characterized in that, include: Ventilation pipe (1), the ventilation pipe (1) is fixed at the ventilation opening of the breeding house; Two sets of winding assemblies (2) are symmetrically fixed to the two opposite outer sides of the ventilation pipe (1); A mesh curtain (3) is disposed on the outside of the port of the ventilation duct (1), and both ends of the mesh curtain (3) are wound up by corresponding winding components (2); and A clamping frame (4) is provided on the outside of the port of the ventilation pipe (1) using an easy-to-remove locking component (5) to clamp the mesh curtain (3).

2. The dustproof and insect-proof net cover for the ventilation opening of the livestock shed according to claim 1, characterized in that: The winding assembly (2) includes: A protective cover (21) is detachably installed on the outer wall of the ventilation pipe (1); A winding rod (22) is rotatably installed inside the protective cover (21), and the end of the net curtain (3) is fixed to the winding rod (22) with screws; A fixed shaft (23) is fixed to the end of the winding rod (22), and the fixed shaft (23) passes through the protective cover (21) to form a rotating structure; The locking element locks the winding rod (22) to the protective cover (21).

3. The dustproof and insect-proof net cover for the ventilation opening of the livestock shed according to claim 2, characterized in that: The locking element includes: Handwheel (24), said handwheel (24) being fixed to the end of said fixed shaft (23) away from said winding rod (22); and The manual bolt (25) has multiple positioning grooves (211) evenly distributed along the circumferential direction on the end face of the protective cover (21). The manual bolt (25) is installed on the handwheel (24) by thread engagement, and the end of the manual bolt (25) is embedded in the positioning groove (211).

4. The dustproof and insect-proof mesh cover for the ventilation opening of the livestock shed according to claim 2, characterized in that: The protective cover (21) is bolted to the outer wall of the ventilation pipe (1).

5. The dustproof and insect-proof net cover for the ventilation opening of the livestock shed according to claim 1, characterized in that: The detachable locking assembly (5) includes: Positioning blocks (51), two positioning blocks (51) are symmetrically fixed at both ends of the clamping frame (4), and notches (511) are provided on the positioning blocks (51); A first threaded rod (52), the first threaded rod (52) being fixed to the outer wall of the ventilation pipe (1) and penetrating the notch (511); and The first wing nut (53) is installed on the protruding end of the first threaded rod (52) by means of thread engagement.

6. The dustproof and insect-proof net cover for the ventilation opening of the livestock shed according to claim 1, characterized in that: It also includes a clutter collection component (6), and the clutter collection component (6) includes: Collection trough (61), said collection trough (61) being detachably mounted to the bottom end of said clamping frame (4); and A rubber scraper (62) is fixed at the top of the collection trough (61) in an inclined manner. The top of the rubber scraper (62) passes through the pressing frame (4) and is attached to the mesh curtain (3).

7. The dustproof and insect-proof net cover for the ventilation opening of the livestock shed according to claim 6, characterized in that: The hybrid assembly (6) also includes: Support block (63), which is fixed to the bottom end of the clamping frame (4) and is used to support the collection groove (61); A second threaded rod (64) is fixed to the bottom surface of the collecting groove (61) and passes through the support block (63); and The second wing nut (65) is installed on the protruding end of the second threaded rod (64) by means of thread engagement.

8. The dustproof and insect-proof mesh cover for the ventilation opening of the livestock shed according to claim 1, characterized in that: The mesh curtain (3) is a multi-layer composite mesh structure with laminated pressing. From the outside to the inside, it includes a nylon mesh with a aperture of 0.8mm, a stainless steel wire mesh with a aperture of 0.15mm, and a polyester woven mesh with a aperture of 1.5mm.