Agricultural greenhouse exhaust device

Abstract

The utility model belongs to the field of agriculture, concretely is a kind of agricultural greenhouse exhaust device, including fan;The air inlet end of the fan is detachably installed with flexible air pipe by flange plate, one end of the flexible air pipe away from fan is fixedly connected with pipe seat, the both ends of the pipe seat are all installed with multiple negative pressure pipes, two adjacent negative pressure pipes are interconnected, the bottom of the negative pressure pipe is installed with air inlet, in use, multiple negative pressure pipes are interconnected, and the negative pressure pipe located at end portion is sealed using plug, negative pressure pipe is installed in the inside of big -arch shelter, when needing forced exhaust, fan is transported to big -arch shelter planting area, staff connects between fan and flexible air pipe by flange plate, then fan starts and generates negative pressure, negative pressure passes through negative pressure pipe and lower air inlet, to distribute negative pressure in the inside of big -arch shelter, to improve the uniformity of big -arch shelter air inlet, to reduce the use amount of fan, facilitate staff to exhaust big -arch shelter.

Description

Technical Field

[0001] This utility model relates to the agricultural field, specifically an agricultural greenhouse ventilation device. Background Technology

[0002] In current technology, during routine crop management, after rainfall, staff need to increase ventilation in greenhouses to reduce internal humidity. The common ventilation method is to open the greenhouse film at the bottom of the greenhouse. In windless weather or when rapid dehumidification is needed, staff need to use fans to exhaust air and accelerate airflow.

[0003] However, during use, the negative pressure exhaust of the fan is uneven. The pressure in the area directly in front of the fan causes the greenhouse film to dent under pressure, which can easily lead to damage. In contrast, the negative pressure in areas far from the fan is low, making it difficult for air to enter the greenhouse. Therefore, an agricultural greenhouse ventilation device is proposed to address the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology and solve at least one of the technical problems mentioned in the background art, this utility model proposes an agricultural greenhouse ventilation device.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The agricultural greenhouse ventilation device of this utility model includes a fan; the air inlet end of the fan is detachably installed with a flexible air duct through a flange, the end of the flexible air duct away from the fan is fixedly connected to a pipe seat, multiple negative pressure pipes are installed at both ends of the pipe seat, two adjacent negative pressure pipes are interconnected, an air inlet is installed at the bottom of the negative pressure pipe, and a plug is installed at the end of the negative pressure pipe away from the pipe seat.

[0006] Preferably, one end of the negative pressure pipe is slidably connected to a sleeve, the end of the negative pressure pipe away from the sleeve is provided with an external thread, and the inner sidewall of the sleeve is provided with an internal thread.

[0007] Preferably, the negative pressure pipe is provided with a pair of fixed seats, the pair of fixed seats are detachably connected by a first fastener, a first clamp is fixedly connected to the fixed seat, a second clamp is provided on the side of the first clamp, and the first clamp and the second clamp are detachably connected by a second fastener.

[0008] Preferably, a boss is fixed to the bottom inner wall of the air inlet, a through hole is opened in the middle of the boss, a bracket is fixed to the bottom of the boss, a vertical rod is slidably connected to the middle of the bracket, a sealing plug is fixed to the top of the vertical rod, the sealing plug is located at the top of the boss, and the diameter of the sealing plug is larger than the through hole.

[0009] Preferably, a fixing ring is fixedly connected to the bottom end of the vertical rod, and a spring is fixedly connected between the top of the fixing ring and the bottom of the bracket, with the spring sleeved on the vertical rod.

[0010] Preferably, a pair of filter screens are fixedly connected inside the tube seat. The filter screens are arranged in a conical structure. The tube seat is located between the two filter screens. The cross-sectional area of ​​the tube seat is more than twice the cross-sectional area of ​​the negative pressure tube.

[0011] The advantages of this utility model are:

[0012] 1. This utility model incorporates a flexible duct, a fan, a pipe seat, and a negative pressure pipe. During use, multiple negative pressure pipes are interconnected, with the ends sealed with plugs. The negative pressure pipes are installed inside the greenhouse. When forced ventilation is required, the fan is transported to the greenhouse planting area. Workers connect the fan and the flexible duct using flanges, and then the fan is activated to generate negative pressure. This negative pressure is distributed throughout the greenhouse through the negative pressure pipe and the lower air inlet, thereby improving the uniformity of air intake and reducing the amount of fan used, making it easier for workers to ventilate the greenhouse.

[0013] 2. This utility model uses a bracket, a sealing plug, a boss, and a vertical rod. During use, a boss is provided on the bottom inner wall of the air inlet, and the sealing plug is located above the boss and blocks the middle of the boss to seal it. When negative pressure is applied during exhaust, the sealing plug and the vertical rod move upward under the air pressure to open the air inlet. After exhaust is completed, they can move downward to reset and seal the air inlet, thereby reducing the possibility of external insects and spiders entering the negative pressure pipe and thus reducing pipe blockage. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the negative pressure pipe structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the negative pressure pipe of this utility model;

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

[0019] Figure 5 This is a schematic diagram of the structure of the fixing base of this utility model.

[0020] In the diagram: 11. Fan; 12. Flexible duct; 13. Pipe seat; 14. Negative pressure pipe; 15. Air inlet; 16. Plug; 21. Pipe sleeve; 22. External thread; 31. Fixing seat; 32. First clamp; 33. Second clamp; 34. First fastener; 35. Second fastener; 4. Spring; 51. Boss; 52. Sealing plug; 53. Vertical rod; 54. Bracket; 6. Filter screen. Detailed Implementation

[0021] 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 scope of protection of the present utility model.

[0022] Specific implementation examples are given below.

[0023] Please see Figure 1-5 As shown, an agricultural greenhouse ventilation device includes a fan 11; a flexible duct 12 is detachably installed at the air inlet end of the fan 11 via a flange, a pipe seat 13 is fixedly connected to the end of the flexible duct 12 away from the fan 11, multiple negative pressure pipes 14 are installed at both ends of the pipe seat 13, two adjacent negative pressure pipes 14 are interconnected, an air inlet 15 is installed at the bottom of the negative pressure pipe 14, and a plug 16 is installed at the end of one negative pressure pipe 14 away from the pipe seat 13; a pipe sleeve 21 is slidably connected to one end of the negative pressure pipe 14, an external thread 22 is provided at the end of the negative pressure pipe 14 away from the pipe sleeve 21, and an internal thread is provided on the inner side wall of the pipe sleeve 21;

[0024] In use, multiple negative pressure pipes 14 are interconnected, and the negative pressure pipes 14 at the ends are sealed with plugs 16. The negative pressure pipes 14 are installed inside the greenhouse. When forced ventilation is required, the fan 11 is transported to the greenhouse planting area. The staff connects the fan 11 and the flexible air duct 12 with a flange. Then the fan 11 is started to generate negative pressure. The negative pressure is distributed inside the greenhouse through the negative pressure pipe 14 and the air inlet 15 below, thereby improving the uniformity of air intake in the greenhouse and reducing the amount of fan 11 used, making it easier for staff to ventilate the greenhouse.

[0025] Furthermore, the end of the negative pressure tube 14 is inserted into the sleeve 21 of another negative pressure tube 14, and the internal thread and external thread 22 of the sleeve 21 are connected to connect the two negative pressure tubes 14.

[0026] Furthermore, such as Figure 1-5 As shown, the negative pressure pipe 14 is provided with a pair of fixed seats 31, and the pair of fixed seats 31 are detachably connected to each other by a first fastener 34. A first clamp 32 is fixedly connected to the fixed seat 31, and a second clamp 33 is provided on the side of the first clamp 32. The first clamp 32 and the second clamp 33 are detachably connected to each other by a second fastener 35.

[0027] In use, the two fixing seats 31 are fixed to the negative pressure pipe 14 by the first fastener 34. The fixing seats 31 are equipped with the first clamp 32 and the second clamp 33 and are fixed by the second fastener 35. The first clamp 32 and the second clamp 33 are used to fix and hold the greenhouse frame.

[0028] Furthermore, such as Figure 1-5 As shown, a boss 51 is fixedly connected to the bottom inner wall of the air inlet 15. A through hole is opened in the middle of the boss 51. A bracket 54 is fixedly connected to the bottom of the boss 51. A vertical rod 53 is slidably connected to the middle of the bracket 54. A sealing plug 52 is fixedly connected to the top of the vertical rod 53. The sealing plug 52 is located at the top of the boss 51. The diameter of the sealing plug 52 is larger than the through hole. A fixing ring is fixedly connected to the bottom of the vertical rod 53. A spring 4 is fixedly connected between the top of the fixing ring and the bottom of the bracket 54. The spring 4 is sleeved on the vertical rod 53.

[0029] During use, a boss 51 is provided on the bottom inner wall of the air inlet 15. The sealing plug 52 is located above the boss 51 and blocks the middle of the boss 51 to seal it. When the negative pressure is exhausted, the sealing plug 52 and the vertical rod 53 move upward under the action of air pressure to open the air inlet 15. After the exhaust is completed, they can move downward to reset and seal the air inlet 15, thereby reducing the possibility of external insects and spiders entering the negative pressure pipe 14 and reducing the possibility of pipe blockage. A fixing ring is fixed to the bottom end of the vertical rod 53. A spring 4 is installed between the fixing ring and the bracket 54, which can easily drive the sealing plug 52 to move downward to reset and seal.

[0030] Furthermore, such as Figure 1-5 As shown, a pair of filter screens 6 are fixed inside the tube seat 13. The filter screens 6 are arranged in a conical structure. The tube seat 13 is located between the two filter screens. The cross-sectional area of ​​the tube seat 13 is more than twice the cross-sectional area of ​​the negative pressure tube 14.

[0031] When in use, the cross-sectional area of ​​the pipe seat 13 is more than twice the cross-sectional area of ​​the negative pressure pipe 14. It is used to ensure the smooth exhaust of the negative pressure pipes 14 on both sides and reduce the situation of ineffective exhaust of the fan 11. By installing two filters inside the pipe seat 13, it is used to filter and intercept the air drawn in by the negative pressure pipe 14, thereby reducing the possibility of foreign objects entering and damaging the fan 11.

[0032] Working principle: During use, multiple negative pressure pipes 14 are interconnected, and the negative pressure pipes 14 at the ends are sealed with plugs 16. The negative pressure pipes 14 are installed inside the greenhouse. When forced ventilation is required, the fan 11 is transported to the greenhouse planting area. The staff connects the fan 11 and the flexible air duct 12 through a flange. Then the fan 11 is started to generate negative pressure. The negative pressure is distributed inside the greenhouse through the negative pressure pipes 14 and the air inlet 15 below, thereby improving the uniformity of air intake in the greenhouse and reducing the amount of fan 11 used, making it easier for staff to ventilate the greenhouse.

[0033] Furthermore, the end of the negative pressure pipe 14 is inserted into the sleeve 21 of another negative pressure pipe 14, and the internal and external threads 22 of the sleeve 21 are connected to connect the two negative pressure pipes 14. In use, the two fixing seats 31 are fixed to the negative pressure pipes 14 by the first fastener 34. The fixing seats 31 are equipped with the first clamp 32 and the second clamp 33, and are fixed by the second fastener 35. The first clamp 32 and the second clamp 33 are used to fix and hold the pipes to the greenhouse frame. In use, the bottom inner wall of the air inlet 15 is provided with a boss 51, and the sealing plug 52 is located above the boss 51 and blocks the middle of the boss 51 to seal it. When the negative pressure is exhausted, the air pressure causes the sealing plug 52 and the vertical rod 53 to be sealed. The vertical rod 53 is moved upward to open the air inlet 15. After exhaust, it can be moved downward to reset and seal the air inlet 15, thereby reducing the possibility of external insects and spiders entering the negative pressure pipe 14 and thus reducing pipe blockage. A fixing ring is fixed to the bottom end of the vertical rod 53. A spring 4 is installed between the fixing ring and the bracket 54, which can easily drive the sealing plug 52 downward to reset the seal. In use, the cross-sectional area of ​​the pipe seat 13 is more than twice the cross-sectional area of ​​the negative pressure pipe 14. It is used to ensure the smooth exhaust of the negative pressure pipes 14 on both sides and reduce the ineffective exhaust of the fan 11. Two filters are installed inside the pipe seat 13 to filter and intercept the air drawn into the negative pressure pipe 14, thereby reducing the possibility of foreign objects entering and damaging the fan 11.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] 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 claimed utility model.

Claims

1. An agricultural greenhouse ventilation device, comprising a fan (11); characterized in that: The air inlet of the fan (11) is detachably mounted with a flexible air duct (12) via a flange. The end of the flexible air duct (12) away from the fan (11) is fixed with a pipe seat (13). Multiple negative pressure pipes (14) are installed at both ends of the pipe seat (13). Two adjacent negative pressure pipes (14) are connected to each other. An air inlet (15) is installed at the bottom of the negative pressure pipe (14). A plug (16) is installed at the end of one negative pressure pipe (14) away from the pipe seat (13).

2. The agricultural greenhouse ventilation device according to claim 1, characterized in that: One end of the negative pressure pipe (14) is slidably connected to a sleeve (21), and the end of the negative pressure pipe (14) away from the sleeve (21) is provided with an external thread (22), and the inner sidewall of the sleeve (21) is provided with an internal thread.

3. The agricultural greenhouse ventilation device according to claim 2, characterized in that: The negative pressure pipe (14) is provided with a pair of fixed seats (31), and the pair of fixed seats (31) are detachably connected by a first fastener (34). A first clamp (32) is fixedly connected to the fixed seat (31), and a second clamp (33) is provided on the side of the first clamp (32). The first clamp (32) and the second clamp (33) are detachably connected by a second fastener (35).

4. The agricultural greenhouse ventilation device according to claim 3, characterized in that: A boss (51) is fixedly connected to the bottom inner wall of the air inlet (15). A through hole is opened in the middle of the boss (51). A bracket (54) is fixedly connected to the bottom of the boss (51). A vertical rod (53) is slidably connected to the middle of the bracket (54). A sealing plug (52) is fixedly connected to the top of the vertical rod (53). The sealing plug (52) is located at the top of the boss (51). The diameter of the sealing plug (52) is larger than that of the through hole.

5. The agricultural greenhouse ventilation device according to claim 4, characterized in that: A fixing ring is fixed to the bottom end of the vertical rod (53), and a spring (4) is fixed between the top of the fixing ring and the bottom of the bracket (54). The spring (4) is sleeved on the vertical rod (53).

6. The agricultural greenhouse ventilation device according to claim 5, characterized in that: A pair of filter screens (6) are fixed inside the tube seat (13). The filter screens (6) are arranged in a conical structure. The tube seat (13) is located between the two filter screens. The cross-sectional area of ​​the tube seat (13) is more than twice the cross-sectional area of ​​the negative pressure tube (14).

Images