Sand prevention structure for ventilation opening of greenhouse

Abstract

The utility model relates to the technical field of greenhouses, in particular to a greenhouse ventilation opening sand-proof structure which comprises an installation frame, a ventilation opening and a sand-proof device, the ventilation opening is formed in the surface of the installation frame, the sand-proof device is arranged on the surface of the ventilation opening, the sand-proof device comprises a sand-proof assembly, a sand discharging assembly and an auxiliary assembly, and the sand-proof assembly comprises a sliding groove. The sliding grooves are formed in the surfaces of the ventilation openings, the surfaces of the sliding grooves are slidably connected with sand-proof nets, the surfaces of the sand-proof nets are fixedly connected with first springs, the ends, away from the sand-proof nets, of the first springs are fixedly connected with the surfaces of the sliding grooves, and balls are arranged on the surfaces of the sand-proof nets in a rolling mode. The sand-proof device is arranged, sand and dust are prevented from entering the greenhouse through double protection of the sand-proof net and the filter net, the sand-proof net is continuously shaken through wind power when the sand storm is large, the sand and dust are shaken off so as to avoid blocking the sand-proof net, the shaken-off sand and dust can be discharged out of the ventilation opening, and the sand and dust are prevented from being blown by the wind power to rise again. And therefore, the durability of the equipment is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of greenhouse technology, and in particular to a sand-proof structure for greenhouse ventilation openings. Background Technology

[0002] A greenhouse is a facility that stores and converts solar energy, transforming some of the sun's light energy into heat energy to meet the needs of crop growth. However, there is an optimal temperature and humidity range for crop growth, and the optimal temperature and humidity will change at different growth stages. Therefore, during the use of a greenhouse, it is necessary to ventilate appropriately according to the changes in temperature and humidity inside the greenhouse. In order to prevent external sand and dust from entering the greenhouse through the ventilation openings, a sand-proof structure for the ventilation openings is required.

[0003] Existing technologies, such as Chinese Patent Publication No. CN212324917U, disclose a ventilation structure for a greenhouse, including a foundation, a greenhouse body, support blocks, fixing blocks, fixing columns, support rods, support plates, clamping devices, support frames, positioning blocks, positioning plates, fixing rods, baffles, locking devices, sand-proof nets, crossbeams, support columns, vertical beams, fixing plates, buckle devices, positioning rods, motors, rotating rods, rotating blades, support blocks, and diffusers. The greenhouse body is fixedly installed on the surface of the foundation, and support blocks, support frames, and positioning blocks are fixedly installed on the surface of the greenhouse body. This utility model uses a movable structure composed of support rods, fixing blocks, and fixing columns to support the baffles, which are then fixed by the support frames, achieving ventilation. The movable structure composed of motors, rotating rods, and rotating blades blows air into the greenhouse, and the diffuser further improves ventilation efficiency, thereby enhancing crop growth efficiency. However, this utility model uses a fixed sand-proof net to protect the ventilation opening from sand. When there is a strong sandstorm, the sand-proof net will be quickly covered and blocked by sand and dust, which will affect normal ventilation.

[0004] To address the problem of fixed sand-proof nets used in greenhouse ventilation openings being easily covered and blocked by wind and sand, existing equipment mostly uses fixed sand-proof nets to prevent sand and dust from entering the greenhouse through the ventilation openings. However, when there is a strong wind and sandstorm, the surface of the sand-proof nets will be quickly covered by sand and dust, which will block the ventilation openings and affect the normal ventilation of the greenhouse. Therefore, this needs to be improved. Utility Model Content

[0005] The purpose of this invention is to solve the problem that fixed sand-proof nets used for greenhouse ventilation openings are easily covered and blocked by wind and sand in the existing technology, and to propose a sand-proof structure for greenhouse ventilation openings.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a sand-proof structure for a greenhouse ventilation opening, comprising an installation frame, a ventilation opening, and a sand-proof device. The ventilation opening is located on the surface of the installation frame, and the sand-proof device is located on the surface of the ventilation opening. The sand-proof device includes a sand-proof component, a sand-discharging component, and an auxiliary component. The sand-proof component includes a sliding groove located on the surface of the ventilation opening. A sand-proof net is slidably connected to the surface of the sliding groove. A spring is fixedly connected to the surface of the sand-proof net, with one end of the spring away from the sand-proof net fixedly connected to the surface of the sliding groove. Ball bearings are rolled on the surface of the sand-proof net, and the ball bearings are slidably connected to the surface of the sliding groove. The sand-discharging component includes a sand-storage chamber located inside the installation frame. A sand-discharging groove is located inside the installation frame, and a sand-discharging port is located on the surface of the installation frame. A sand-discharging pipe is fixedly connected to the surface of the sand-discharging port.

[0007] Furthermore, a filter screen is fixedly installed on the surface of the vent, and a first inclined groove is formed on the surface of the vent, and a second inclined groove is formed on the surface of the vent, with the second inclined groove positioned between the sandproof mesh and the filter screen.

[0008] Furthermore, the sand discharge trough is connected to the chute and the sand storage chamber respectively, the sand discharge port is connected to the sand storage chamber, and a baffle is slidably connected to the surface of the sand storage chamber, the baffle being disposed above the sand discharge port.

[0009] Furthermore, a second spring is fixedly connected to the surface of the baffle, and the end of the second spring away from the baffle is fixedly connected to the surface of the sand storage cavity.

[0010] Furthermore, the auxiliary component includes a slide rod, which is slidably connected to the inner wall of the mounting frame, and a collar is fixedly connected to the surface of the slide rod, which is slidably connected to the surface of the sand discharge pipe.

[0011] Furthermore, a hemispherical block is fixedly connected to the end of the slide rod away from the collar, and a movable disc is slidably connected to the surface of the slide rod.

[0012] Furthermore, a spring three is sleeved and connected to the surface of the slide rod. One end of the spring three is fixedly connected to the surface of the hemispherical block, and the other end of the spring three is fixedly connected to the surface of the movable disk.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting up a sand-proof device, sand-proof nets and filters are used to prevent sand and other foreign objects from entering the greenhouse through the ventilation openings. When there is a lot of sand, it is often accompanied by strong winds. The wind blows to the sand-proof net, causing it to slide along the chute and continuously press the first spring. Under the rebound of the first spring, the sand-proof net shakes continuously, thereby shaking off the sand accumulated on the surface of the sand-proof net. The sand on the outside of the sand-proof net is guided to the outside ground through the first inclined chute, while the sand on the inside of the sand-proof net is guided into the sand storage chamber through the second inclined chute and the sand discharge chute. Dust falls onto the baffle and accumulates. When there is a lot of dust, the second spring is compressed under the action of gravity, causing the baffle to drop downwards and leak out of the sand discharge port. The dust is discharged to the outside through the sand discharge port and the sand discharge pipe. After being discharged, the baffle returns to its original position under the action of the second spring, preventing foreign objects from entering the ventilation opening from the sand discharge port. During the downward movement of the baffle, the hemispherical block is pushed and the third spring is compressed, causing the sliding rod to drive the collar to slide along the sand discharge pipe, which straightens the soft sand discharge pipe and prevents it from bending or being blocked by foreign objects.

[0015] 2. In this utility model, by setting up a sand-proof device, the double protection of the sand-proof net and the filter net is used to prevent sand and dust from entering the greenhouse. When the wind and sand are strong, the wind force is used to make the sand-proof net shake continuously, shaking off the sand and dust to avoid clogging the sand-proof net. It can also discharge the shaken sand and dust out of the ventilation opening and prevent it from being blown up again by the wind, thus effectively improving the durability of the equipment. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural diagram of a sand-proof structure for greenhouse ventilation openings;

[0017] Figure 2 This utility model provides a cross-sectional structural diagram of a sand-prevention device in a greenhouse ventilation opening sand-prevention structure;

[0018] Figure 3 This utility model proposes a sand-proof structure for greenhouse ventilation openings. Figure 2 Schematic diagram at point A;

[0019] Figure 4 This utility model proposes a sand-proof structure for greenhouse ventilation openings. Figure 2 Schematic diagram at point B;

[0020] Figure 5 This utility model proposes a sand-proof structure for greenhouse ventilation openings. Figure 2 A schematic diagram at point C.

[0021] Legend:

[0022] 1. Mounting frame; 2. Ventilation opening; 3. Sand control device; 31. Sand control component; 311. Slide groove; 312. Sand control net; 313. Spring 1; 314. Ball bearing; 315. Filter screen; 316. Inclined chute 1; 317. Inclined chute 2; 32. Sand discharge component; 321. Sand storage chamber; 322. Sand discharge trough; 323. Sand discharge port; 324. Sand discharge pipe; 325. Baffle; 326. Spring 2; 33. Auxiliary component; 331. Slide rod; 332. Collar; 333. Hemispherical block; 334. Movable plate; 335. Spring 3. Detailed Implementation

[0023] Please see Figures 1-5 This utility model provides a technical solution: a sand-proof structure for greenhouse ventilation openings, including an installation frame 1, a ventilation opening 2, and a sand-proof device 3. The ventilation opening 2 is opened on the surface of the installation frame 1, and the sand-proof device 3 is disposed on the surface of the ventilation opening 2.

[0024] The specific setup and function of its sand-prevention device 3 will be explained below.

[0025] In this embodiment: the sand prevention device 3 includes a sand prevention component 31, a sand discharge component 32, and an auxiliary component 33. The sand prevention component 31 includes a chute 311, which is opened on the surface of the ventilation opening 2. A sand prevention net 312 is slidably connected to the surface of the chute 311. A spring 313 is fixedly connected to the surface of the sand prevention net 312. One end of the spring 313 away from the sand prevention net 312 is fixedly connected to the surface of the chute 311. A ball bearing 314 is rolled on the surface of the sand prevention net 312 and is slidably connected to the surface of the chute 311. The sand discharge component 32 includes a sand storage chamber 321, which is opened inside the mounting frame 1. A sand discharge groove 322 is opened inside the mounting frame 1. A sand discharge port 323 is opened on the surface of the mounting frame 1. A sand discharge pipe 324 is fixedly connected to the surface of the sand discharge port 323.

[0026] The effects achieved by the above components are as follows: the sliding groove 311 is set to facilitate the up-and-down sliding of the sandproof net 312 under the push of the wind; the sandproof net 312 is set to prevent sand and dust from entering the greenhouse through the ventilation opening 2; the spring 313 is set to use its rebound force in conjunction with the wind force to make the sandproof net 312 shake up and down continuously, shaking off the surface sand and dust; the ball bearing 314 is set to make the sandproof net 312 more easily shake along the sliding groove 311 under the action of external force; the sand storage chamber 321 and the sand discharge trough 322 are set to facilitate the collection of sand and dust shaken off from the inside of the sandproof net 312; and the sand discharge port 323 and the sand discharge pipe 324 are set to facilitate the discharge of sand and dust from the sand storage chamber 321.

[0027] Specifically, a filter screen 315 is fixedly installed on the surface of the vent 2, a first inclined groove 316 is opened on the surface of the vent 2, a second inclined groove 317 is opened on the surface of the vent 2, and the second inclined groove 317 is located between the sandproof net 312 and the filter screen 315.

[0028] The effects achieved by the above components are as follows: the filter screen 315 is set as a second layer of protection to prevent the shaken sand and dust from entering the greenhouse; the inclined groove 316 is set to guide the shaken sand and dust on the outside of the sandproof net 312 to the outside ground; and the inclined groove 317 is set to guide the shaken sand and dust on the inside of the sandproof net 312 to the sand storage chamber 321.

[0029] Specifically, the sand discharge trough 322 is connected to the chute 311 and the sand storage chamber 321 respectively, the sand discharge port 323 is connected to the sand storage chamber 321, and a baffle 325 is slidably connected to the surface of the sand storage chamber 321, with the baffle 325 positioned above the sand discharge port 323.

[0030] The effect achieved by the above components is as follows: the baffle 325 is set to block the sand discharge port 323 and the sand discharge trough 322 under normal conditions, so as to prevent foreign objects from entering the ventilation port 2 through the sand discharge port 323.

[0031] Specifically, a second spring 326 is fixedly connected to the surface of the baffle 325, and the end of the second spring 326 away from the baffle 325 is fixedly connected to the surface of the sand storage cavity 321.

[0032] The effect achieved by the above components is as follows: the spring 326 is set to cooperate with the baffle 325. When a lot of sand and dust accumulates inside the sand storage chamber 321, the baffle 325 is pushed downward under the action of gravity to expose the sand discharge port 323, so that the sand and dust are discharged. After being discharged, the baffle 325 is reset under the action of spring rebound, and continues to block the sand discharge port 323 and the sand discharge trough 322.

[0033] Specifically, the auxiliary component 33 includes a slide rod 331, which is slidably connected to the inner wall of the mounting frame 1. A collar 332 is fixedly connected to the surface of the slide rod 331, and the collar 332 is slidably connected to the surface of the sand discharge pipe 324.

[0034] The effect achieved by the above components is as follows: the slide bar 331 and the collar 332 are set to cooperate with the baffle 325. When the baffle 325 is downward, the slide bar 331 drives the collar 332 to slide along the sand discharge pipe 324, so as to straighten the soft sand discharge pipe 324 and avoid bending or being blocked by foreign objects.

[0035] Specifically, a hemispherical block 333 is fixedly connected to the end of the slide rod 331 away from the collar 332, and a movable disk 334 is slidably connected to the surface of the slide rod 331.

[0036] The effects achieved by the above components are as follows: the hemispherical block 333 is set to facilitate better pushing of the slide bar 331 when the baffle 325 is downward, and the movable plate 334 is set to cover the gap at the connection between the slide bar 331 and the mounting frame 1.

[0037] Specifically, a spring 335 is sleeved and connected to the surface of the slide rod 331. One end of the spring 335 is fixedly connected to the surface of the hemispherical block 333, and the other end of the spring 335 is fixedly connected to the surface of the movable disk 334.

[0038] The effect achieved by the above components is as follows: the spring 335 is set so that the movable plate 334 is tightly attached to the gap at the connection between the slide rod 331 and the mounting frame 1, and the spring action is used to facilitate the reset of the slide rod 331.

[0039] Working principle: By setting up a sand-proof device 3, sand-proof netting 312 and filter screen 315 are used to prevent sand and dust and other foreign objects from entering the greenhouse through ventilation opening 2. When there is a lot of sand and dust, it is often accompanied by strong winds. The wind blows to the sand-proof netting 312, causing it to slide along the sliding groove 311 and continuously press the spring 313. Under the rebound of the spring 313, the sand-proof netting 312 shakes continuously, thereby shaking off the sand and dust accumulated on the surface of the sand-proof netting 312. The sand and dust on the outside of the sand-proof netting 312 are guided to the outside ground through inclined groove 316, while the sand and dust on the inside of the sand-proof netting 312 are guided into the sand storage chamber 321 through inclined groove 317 and sand discharge groove 322. The sand falls onto the baffle 325 and accumulates continuously. When there is a lot of sand, the second spring 326 is compressed under the action of gravity, causing the baffle 325 to drop downwards and leak out of the sand discharge port 323. The sand is discharged to the outside through the sand discharge port 323 and the sand discharge pipe 324. After being discharged, the baffle 325 is reset under the rebound action of the second spring 326, preventing foreign objects from entering the ventilation port 2 from the sand discharge port 323. During the downward movement of the baffle 325, the hemispherical block 333 is pushed and the third spring 335 is compressed, causing the sliding rod 331 to drive the collar 332 to slide along the sand discharge pipe 324, tidying up the soft sand discharge pipe 324 and preventing it from bending or being blocked by foreign objects.

[0040] By setting up a sand-proof device 3, the double protection of the sand-proof net 312 and the filter net 315 prevents sand and dust from entering the greenhouse. When the wind and sand are strong, the wind force makes the sand-proof net 312 shake continuously, shaking off the sand and dust to avoid clogging the sand-proof net 312. It can also discharge the shaken sand and dust out of the ventilation opening 2, preventing it from being blown up again by the wind. This effectively improves the durability of the equipment.

Claims

1. A sand prevention structure for a ventilation opening of a greenhouse, comprising a mounting frame (1), a ventilation opening (2) and a sand prevention device (3), characterized in that: The ventilation opening (2) is located on the surface of the mounting frame (1), and the sand-proof device (3) is located on the surface of the ventilation opening (2). The sand-proof device (3) includes a sand-proof component (31), a sand-discharging component (32), and an auxiliary component (33). The sand-proof component (31) includes a slide groove (311), which is located on the surface of the ventilation opening (2). A sand-proof net (312) is slidably connected to the surface of the slide groove (311), and a spring (313) is fixedly connected to the surface of the sand-proof net (312). The spring (313) is located away from the sand-proof net. One end of (312) is fixedly connected to the surface of the chute (311). The surface of the sand-proof net (312) is provided with rolling balls (314). The rolling balls (314) are slidably connected to the surface of the chute (311). The sand discharge assembly (32) includes a sand storage chamber (321). The sand storage chamber (321) is opened inside the mounting frame (1). The interior of the mounting frame (1) is provided with a sand discharge groove (322). The surface of the mounting frame (1) is provided with a sand discharge port (323). The surface of the sand discharge port (323) is fixedly connected with a sand discharge pipe (324).

2. The sand-prevention structure for the ventilation opening of the greenhouse according to claim 1, characterized in that: A filter screen (315) is fixedly installed on the surface of the ventilation opening (2). A first inclined groove (316) is opened on the surface of the ventilation opening (2). A second inclined groove (317) is opened on the surface of the ventilation opening (2). The second inclined groove (317) is located between the sandproof net (312) and the filter screen (315).

3. The sand-prevention structure for the ventilation opening of the greenhouse according to claim 1, characterized in that: The sand discharge trough (322) is connected to the chute (311) and the sand storage chamber (321) respectively. The sand discharge port (323) is connected to the sand storage chamber (321). A baffle (325) is slidably connected to the surface of the sand storage chamber (321). The baffle (325) is located above the sand discharge port (323).

4. The sand-prevention structure for the ventilation opening of the greenhouse according to claim 3, characterized in that: A second spring (326) is fixedly connected to the surface of the baffle (325), and the end of the second spring (326) away from the baffle (325) is fixedly connected to the surface of the sand storage cavity (321).

5. The sand-prevention structure for the ventilation opening of the greenhouse according to claim 1, characterized in that: The auxiliary component (33) includes a slide rod (331), which is slidably connected to the inner wall of the mounting frame (1). A collar (332) is fixedly connected to the surface of the slide rod (331), and the collar (332) is slidably connected to the surface of the sand discharge pipe (324).

6. The sand-prevention structure for a ventilation opening of a greenhouse according to claim 5, characterized in that: A hemispherical block (333) is fixedly connected to one end of the slide rod (331) away from the collar (332), and a movable disc (334) is slidably connected to the surface of the slide rod (331).

7. The sand-prevention structure for a ventilation opening of a greenhouse according to claim 6, characterized in that: A spring three (335) is sleeved and connected to the surface of the slide rod (331). One end of the spring three (335) is fixedly connected to the surface of the hemispherical block (333), and the other end of the spring three (335) is fixedly connected to the surface of the movable disk (334).

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