Efficient reversing ventilation device

Abstract

The utility model discloses an efficient reversing ventilation device, and belongs to the technical field of ventilation. The reversing ventilation device comprises a fan, a pipeline I, an electric tee joint I, a tee joint, an electric tee joint II, a pipeline II, a pipeline III and a pipeline IV; an air outlet of the fan is provided with a pipeline IV, one end of the pipeline IV is connected with an electric tee joint I, one air outlet of the electric tee joint I is connected with the pipeline I, the other air outlet of the electric tee joint I is connected with a tee joint, one air outlet of the tee joint is connected with an electric tee joint II, and one air inlet of the electric tee joint II is connected with the pipeline II; an air outlet of the electric tee joint II is connected with a pipeline III; one end of the pipeline III is connected with an air inlet of a fan; the integrated reversing ventilation pipeline structure is adopted, and the complex operation problems that when existing equipment conducts reversing ventilation, a draught fan needs to be moved, and the connecting direction of the draught fan and a pipeline needs to be changed are solved.

Description

Technical Field

[0001] This utility model belongs to the field of ventilation technology, specifically relating to a high-efficiency reversing ventilation device. Background Technology

[0002] Mechanical ventilation is widely used in construction, facility agriculture, agricultural and food processing, and storage, primarily relying on fans as the power source. Mechanical ventilation effectively controls and organizes airflow to achieve the desired ventilation effect. Based on the operating mode of the fans, mechanical ventilation is divided into forced-in ventilation (positive pressure ventilation) and exhaust ventilation (negative pressure ventilation), with the corresponding fans typically called blowers and induced draft fans, respectively. In mechanical ventilation, reversible ventilation direction is an indispensable requirement for ventilation in subways, mines, and tunnels, and is also an important condition for agricultural and food processing and storage. Taking grain drying and storage as an example, reversible ventilation affects the uniformity of ventilation for the object being dried or cooled. Positive pressure ventilation and negative pressure ventilation differ firstly in the resistance of the grain layer, and secondly, because the grain layer that first comes into contact with fresh air differs, the order in which the grain layer dries or cools differs. Reversible ventilation can optimize the ventilation effect and improve the uniformity of grain drying or cooling.

[0003] Currently, the main method of reversing ventilation is to use a mobile fan (CN 113605954 A) to change the connection direction between the fan's inlet and outlet and the ventilation duct to achieve the purpose of reversing ventilation, or to use multiple fans to form a ventilation system with different directions to complete the reversing ventilation. These methods have problems such as complicated operation steps, low degree of automation, or high investment costs. CN206755474 U discloses a reversing ventilation device, which achieves the purpose of reversing ventilation by setting a ring loop between the fan's inlet and outlet. However, this solution requires the installation of 4 electric air valves and 4 air collection boxes, which has a complex structure and high manufacturing cost. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a high-efficiency reversing ventilation device, which solves the problems of high cost and low automation in achieving reversing by adding fans during the current ventilation process, as well as the structural complexity of achieving reversing by setting up a ring circuit.

[0005] The present invention adopts the following technical solution:

[0006] A high-efficiency reversing ventilation device includes: a fan, duct I, an electric tee I, a tee, an electric tee II, duct II, duct III, and duct IV; the fan is fixedly connected to a support surface, and the fan outlet is provided with duct IV, one end of duct IV is connected to electric tee I, one outlet of electric tee I is connected to duct I, the other outlet of electric tee I is connected to the tee, one outlet of the tee is connected to electric tee II, one inlet of electric tee II is connected to duct II, the outlet of electric tee II is connected to duct III, and one end of duct III is connected to the fan inlet.

[0007] According to the aforementioned high-efficiency reversing ventilation device, the electric tee I includes: an electric tee I branch pipe one, an electric tee I branch pipe two, and an electric tee I main pipe; the electric tee I branch pipe one is connected to one end of pipe I, and a dustproof net I is installed at the other end of pipe I; the electric tee I branch pipe two is connected to the tee branch pipe one; the electric tee I main pipe is connected to pipe IV; and an electric actuator I is installed at the junction of the electric tee I branch pipe two and the electric tee I branch pipe one.

[0008] According to the aforementioned high-efficiency reversing ventilation device, the electric tee I is further provided with a reversing valve I, a sealing limit plate, and a limit plate sealing strip; one end of the reversing valve I is rotatably mounted on the electric actuator I, and the electric actuator I controls the reversing valve I to rotate; the sealing limit plate is fixed on the inner wall of the electric tee I; when the other end of the reversing valve I rotates to the end of its stroke, it can block the first or second branch pipe of the electric tee I; a limit plate sealing strip is provided on the sealing limit plate.

[0009] According to the aforementioned high-efficiency reversing ventilation device, the reversing valve I includes: a reversing valve I panel one, a sealing strip, a reversing valve I panel two, and a reinforcing rib; the sealing strip is connected to the reversing valve I panel one and the reversing valve I panel two by bolts, and the sealing strip is clamped between the reversing valve I panel one and the reversing valve I panel two, and a reinforcing rib is provided on the reversing valve I panel two.

[0010] According to the aforementioned high-efficiency reversing ventilation device, the electric tee II includes: an electric tee II branch pipe one, an electric tee II branch pipe two, and an electric tee II main pipe; the electric tee II branch pipe one is connected to one end of pipe II, and a dustproof net II is provided at the other end of pipe II; the electric tee II branch pipe two is connected to the tee branch pipe two; the electric tee II main pipe is connected to pipe III; an electric actuator II is provided at the junction of the electric tee II branch pipe two and the electric tee II branch pipe one.

[0011] According to the aforementioned high-efficiency reversing ventilation device, the electric tee II is also equipped with a reversing valve II having the same internal structure as the reversing valve I.

[0012] According to the aforementioned high-efficiency reversing ventilation device, the angle range that can be changed by reversing valve I and reversing valve II is 0° to 45°.

[0013] According to any one of the high-efficiency reversing ventilation devices, the reversing ventilation device further includes an exhaust duct system, a blower duct system, and a control system; the exhaust duct system discharges the air inside the ventilation scene into the outside through a series of sequentially connected T-junction main pipe, T-junction branch pipe two, electric T-junction II branch pipe one, electric T-junction II main pipe, duct III, fan, duct IV, electric T-junction I main pipe, electric T-junction I branch pipe one, and duct I.

[0014] According to the aforementioned high-efficiency reversing ventilation device, the blower duct system allows outside air to enter the ventilation scene through the sequentially connected duct II, electric tee II branch pipe II, electric tee II main pipe, duct III, fan, duct IV, electric tee I main pipe, electric tee I branch pipe II, tee branch pipe I, and tee main pipe.

[0015] According to the aforementioned high-efficiency reversing ventilation device, the control system includes a controller, which is electrically connected to reversing valve I and reversing valve II.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] (1) The integrated reversing ventilation duct structure solves the complex operation problems of moving the fan and changing the connection direction of the fan and the duct when the existing equipment is reversing ventilation.

[0018] (2) An electrically operated reversing tee is adopted. The electrically operated reversing tee, in conjunction with the air duct, can be used as an exhaust duct to form an exhaust loop or as a blower duct to form a blower loop. Moreover, only one connection port is needed for each loop and the scene requiring ventilation, making it highly adaptable. The loop duct is equipped with a dustproof net at the end connecting to the outside atmosphere, which can reduce the entry of external impurities into the chamber and ensure personnel safety.

[0019] (3) The intelligent control system can automatically adjust the air intake / blowing mode and time according to different ventilation scenarios to achieve fully automatic reversing ventilation.

[0020] (4) This application has only one set of air inlet and air outlet. The air inlet and air outlet are interchanged by the reversing valve, so as to realize the functions of induced air and forced air in the same space. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the high-efficiency reversing ventilation device of this utility model;

[0022] Figure 2 This is a schematic diagram of the reversing valve I of the high-efficiency reversing ventilation device of this utility model;

[0023] Figure 3 This is a schematic diagram of the airflow direction during the induced draft process of the high-efficiency reversing ventilation device of this utility model;

[0024] Figure 4 This is a schematic diagram of the airflow direction during the blowing process of the high-efficiency reversing ventilation device of this utility model;

[0025] In the diagram: 1. Dustproof net I; 2. Pipe I; 3. Electric tee I; 31. Electric tee I branch pipe 1; 32. Electric tee I branch pipe 2; 33. Electric tee I main pipe; 4. Electric actuator I; 5. Reversing valve disc I; 51. Reversing valve disc I panel 1; 52. Sealing strip; 53. Reversing valve disc I panel 2; 54. Reinforcing rib; 6. Tee; 61. Tee branch pipe 1; 62. Tee branch pipe 2; 63. Tee main pipe; 7. Electric tee II; 71. Electric tee II branch pipe 1; 72. Electric tee II branch pipe 2; 73. Electric tee II main pipe; 8. Electric actuator II; 9. Reversing valve disc II; 10. Pipe II; 11. Dustproof net II; 12. Pipe III; 13. Fan; 14. Pipe IV; 15. Wire; 16. Controller; 17. Sealing limit plate; 18. Limit plate sealing strip. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The embodiments described in this application are merely some embodiments of this utility model, and not all embodiments. Based on the spirit of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] 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.

[0028] like Figures 1-4 As shown, this utility model provides a high-efficiency reversing ventilation device, which includes a fan 13, a duct I2, an electric tee I3, a tee 6, an electric tee II7, a duct II10, a duct III12, and a duct IV14.

[0029] The fan 13 is fixedly connected to the support surface by bolts. A pipe Ⅳ14 is provided at the air outlet of the fan 13. One end of the pipe Ⅳ14 is connected to the electric tee Ⅰ3. One air outlet of the electric tee Ⅰ3 is connected to the pipe Ⅰ2. The other air outlet of the electric tee Ⅰ3 is connected to the tee 6. One air outlet of the tee 6 is connected to the electric tee Ⅱ7. One air inlet of the electric tee Ⅱ7 is connected to the pipe Ⅱ10. The air outlet of the electric tee Ⅱ7 is connected to the pipe Ⅲ12. One end of the pipe Ⅲ12 is connected to the air inlet of the fan 13.

[0030] like Figure 1 As shown, the electric tee I3 includes: electric tee I branch pipe 1 31, electric tee I branch pipe 2 32, and electric tee I main pipe 33; electric tee I branch pipe 1 31 is connected to one end of pipe I2, and the other end of pipe I2 is provided with a dustproof net I1 to prevent dust and other pollutants from entering the ventilation equipment; electric tee I branch pipe 2 32 is connected to tee branch pipe 1 61; electric tee I main pipe 33 is connected to pipe IV 14; an electric actuator I4 is provided at the junction of electric tee I branch pipe 2 32 and electric tee I branch pipe 1 31.

[0031] The electric tee I3 is also equipped with a reversing valve I5, a sealing limit plate 17, and a limit plate sealing strip 18. One end of the reversing valve I5 is rotatably mounted on the electric actuator I4, which controls the rotation of the reversing valve I5. The sealing limit plate 17 is fixed to the inner wall of the electric tee I, limiting the range of motion of the reversing valve I5. When the other end of the reversing valve I5 rotates to the end of its stroke, it can completely block the electric tee I branch pipe 1 31 or the electric tee I branch pipe 2 32. The sealing limit plate 17 is equipped with a limit plate sealing strip 18, which works in conjunction with the reversing valve I5 to seal the ventilation pipeline.

[0032] like Figure 2 As shown, the reversing valve disc I5 includes: a reversing valve disc I panel 51, a sealing strip 52, a reversing valve disc I panel 53, and a reinforcing rib 54; the sealing strip 52 is bolted to the reversing valve disc I panel 51 and the reversing valve disc I panel 53 and is clamped between the two; the reversing valve disc I panel 53 is provided with a reinforcing rib 54 to prevent the reversing valve disc I5 from deforming due to excessive wind pressure.

[0033] like Figure 1As shown, the electric tee II 7 includes: electric tee II branch pipe 1 71, electric tee II branch pipe 2 72 and electric tee II main pipe 73; electric tee II branch pipe 1 71 is connected to one end of pipe II 10, and the other end of pipe II 10 is provided with a dustproof net II 11 to prevent dust and other pollutants from entering the ventilation equipment; electric tee II branch pipe 2 72 is connected to tee branch pipe 2 62; electric tee II main pipe 73 is connected to pipe III 12; an electric actuator II 8 is provided at the junction of electric tee II branch pipe 2 72 and electric tee II branch pipe 1 71.

[0034] The electric tee II7 also has a reversing valve II9 with the same internal structure and function as the reversing valve I5.

[0035] The preferred reversing valve disc I5 and reversing valve disc II9 can be adjusted within an angle range of 0° to 45°.

[0036] The aforementioned fan 13 can be a centrifugal fan, axial fan, mixed-flow fan, etc.

[0037] This application also includes an exhaust duct system, a blower duct system, and a control system.

[0038] like Figure 3 As shown, the exhaust duct system includes: dust screen I1, pipe I2, electric tee I branch pipe 31, electric tee I main pipe, electric actuator I4, reversing valve I5, pipe IV14, pipe III12, electric tee II branch pipe 71, electric tee II main pipe, electric actuator II8, reversing valve II9 and tee 6.

[0039] The electrically powered tee I branch pipe 31 of the exhaust duct system is connected to pipe I2, and a dustproof net I1 is installed at the other end of pipe I2. The electrically powered tee I main pipe is connected to pipe IV14. Pipe IV14 is connected to the air outlet of fan 13, and the air inlet of fan 13 is connected to pipe III12. Pipe III12 is connected to the electrically powered tee II main pipe, and electrically powered tee II branch pipe 71 is connected to branch pipe 62 of tee 6.

[0040] The reversing valve I5 of the exhaust duct system is located at the position of branch pipe 2 32 covering electric tee I3, and the reversing valve II9 is ​​located at the position of branch pipe 2 72 covering electric tee II7. The exhaust duct system discharges the air inside the ventilation scene into the outside through the sequentially connected tee main 63, tee branch pipe 2 62, electric tee II branch pipe 1 71, electric tee II main 73, pipe III 12, fan 13, pipe IV 14, electric tee I main 33, electric tee I branch pipe 1 31 and pipe I2.

[0041] like Figure 4As shown, the blower duct system includes a dustproof net II11, a pipe II10, a branch pipe II 72 of an electric tee II, a main pipe of an electric tee II, an electric actuator II8, a reversing valve II9, a pipe III12, a pipe IV14, a branch pipe II 32 of an electric tee I, a main pipe of an electric tee I, a reversing valve I5, and a tee 6.

[0042] The electric tee II branch pipe 72 of the blower duct system is connected to pipe II 10, and a dustproof net II 11 is installed at the other end of pipe II 10. The main electric tee II is connected to pipe III 12. Pipe III 12 is connected to the air inlet of fan 13, and the air outlet of fan 13 is connected to pipe IV 14. Pipe IV 14 is connected to the main electric tee I, and the electric tee I branch pipe 32 is connected to the tee branch pipe 61.

[0043] The reversing valve II9 of the blower duct system is located at the position of branch pipe 71 covering electric tee II7, and the reversing valve I5 is located at the position of branch pipe 31 covering electric tee I3. This allows outside air to enter the ventilation scene through the sequentially connected duct II10, through branch pipe 72 of electric tee II, main pipe 73 of electric tee II, duct III12, fan 13, duct IV14, main pipe 33 of electric tee I, branch pipe 32 of electric tee I, branch pipe 61 of tee, and main pipe 63 of tee.

[0044] The tee pipe 6 is equipped with a flange and is connected to the ventilation system device.

[0045] In the preferred electric tee I3 and electric tee II7, the angle between the main pipe and the branch pipe is 150°, the minimum distance L1 between the branch pipe port and the reversing valve disc is 200mm, and the minimum distance L2 between the main pipe port and the branch pipe is 200mm.

[0046] The control system includes a controller 16 and a wire 15. The controller 16 is connected to the reversing valve I5 and the reversing valve II9 via the wire 15. The controller 16 is pre-set to enable the "induced draft" and "forced draft" linkage activities of the reversing valve I5 and the reversing valve II9, and the induced draft and forced draft states can be switched with one button.

[0047] The high-efficiency reversing ventilation device has two working states: induced draft and forced draft. Its working principle is as follows:

[0048] like Figure 3 As shown, the induced draft working state is as follows: When the ventilation scenario requires induced draft, the control system presses the "induced draft" button. Then, the reversing valves in the electric tee I 3 and electric tee II 7 cover the electric tee I branch pipe 2 32 and the electric tee II branch pipe 2 72 respectively, forming an induced draft circuit. The fan is started, and the air inside the ventilation scenario passes through the tee branch pipe 2 62, and is discharged into the atmosphere through the electric tee II branch pipe 1 71, pipe III 12, fan 13, pipe IV 14, electric tee I branch pipe 1 31, and pipe I 2.

[0049] like Figure 4 As shown, the blower is in operation: When the ventilation scene requires blowering, the control system presses the "Blower" button, and the reversing valves in electric tee I 3 and electric tee II 7 respectively cover the branch pipe 1 31 of electric tee I and the branch pipe 1 71 of electric tee II, forming a blower circuit, starting the fan, and the outside air passes through pipe II 10, through branch pipe 2 72 of electric tee II, pipe III 12, fan 13, pipe IV 14, branch pipe 2 32 of electric tee I, and branch pipe 1 61 of tee to enter the ventilation scene.

[0050] The beneficial effect of this utility model is that, compared with the prior art,

[0051] (1) The integrated reversing ventilation duct structure solves the complex operation problems of moving the fan and changing the connection direction of the fan and the duct when the existing equipment is reversing ventilation.

[0052] (2) An electrically operated reversing tee is adopted. The electrically operated reversing tee, in conjunction with the air duct, can be used as an exhaust duct to form an exhaust loop or as a blower duct to form a blower loop. Moreover, only one connection port is needed for each loop and the scene requiring ventilation, making it highly adaptable. The loop duct is equipped with a dustproof net at the end connecting to the outside atmosphere, which can reduce the entry of external impurities into the chamber and ensure personnel safety.

[0053] (3) An intelligent control system is adopted, which can automatically adjust the air intake / blowing mode and time according to different ventilation scenarios to achieve fully automatic reversing ventilation. For example, when used in conjunction with a dry storage integrated warehouse (application number 202311293005.3), it can automatically reverse ventilation and timed ventilation in combination with the safe storage period of grains with different moisture contents and the "tiered precipitation temperature control and moisture retention" process.

[0054] (4) This application has only one set of air inlet and air outlet. The air inlet and air outlet are interchanged by the reversing valve, so as to realize the functions of induced air and forced air in the same space.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A high-efficiency reversing ventilation device, comprising: Fan (13), pipe I (2), electric tee I (3), tee (6), electric tee II (7), pipe II (10), pipe III (12), pipe IV (14); characterized in that: The fan (13) is fixedly connected to the support surface. The air outlet of the fan (13) is provided with pipe IV (14). One end of pipe IV (14) is connected to electric tee I (3). One air outlet of electric tee I (3) is connected to pipe I (2). The other air outlet of electric tee I (3) is connected to tee (6). One air outlet of tee (6) is connected to electric tee II (7). One air inlet of electric tee II (7) is connected to pipe II (10). The air outlet of electric tee II (7) is connected to pipe III (12). One end of pipe III (12) is connected to the air inlet of the fan (13).

2. The high-efficiency reversing ventilation device according to claim 1, characterized in that: The electric tee I (3) includes: electric tee I branch pipe one (31), electric tee I branch pipe two (32) and electric tee I main pipe (33); electric tee I branch pipe one (31) is connected to one end of pipe I (2), and a dustproof net I (1) is provided at the other end of pipe I (2); electric tee I branch pipe two (32) is connected to tee branch pipe one (61); electric tee I main pipe (33) is connected to pipe IV (14); an electric actuator I (4) is provided at the junction of electric tee I branch pipe two (32) and electric tee I branch pipe one (31).

3. The high-efficiency reversing ventilation device according to claim 1, characterized in that: The electric tee I (3) is also equipped with a reversing valve I (5), a sealing limit plate (17) and a limit plate sealing strip (18); one end of the reversing valve I (5) is rotatably mounted on the electric actuator I (4), the electric actuator I (4) controls the reversing valve I (5) to rotate, the sealing limit plate (17) is fixed on the inner wall of the electric tee I (3), when the other end of the reversing valve I (5) rotates to the end of the stroke, it can block the electric tee I branch pipe one (31) or the electric tee I branch pipe two (32), and the sealing limit plate (17) is equipped with a limit plate sealing strip (18).

4. The high-efficiency reversing ventilation device according to claim 3, characterized in that: The reversing valve disc I (5) includes: reversing valve disc I panel one (51), sealing strip (52), reversing valve disc I panel two (53) and reinforcing rib (54); the sealing strip (52) is connected to the reversing valve disc I panel one (51) and the reversing valve disc I panel two (53) by bolts, and the sealing strip (52) is clamped between the reversing valve disc I panel one (51) and the reversing valve disc I panel two (53), and the reversing valve disc I panel two (53) is provided with reinforcing rib (54).

5. The high-efficiency reversing ventilation device according to claim 1, characterized in that: The electric tee II (7) includes: electric tee II branch pipe one (71), electric tee II branch pipe two (72) and electric tee II main pipe (73); electric tee II branch pipe one (71) is connected to one end of pipe II (10), and a dustproof net II (11) is provided at the other end of pipe II (10); electric tee II branch pipe two (72) is connected to tee branch pipe two (62); electric tee II main pipe (73) is connected to pipe III (12); an electric actuator II (8) is provided at the junction of electric tee II branch pipe two (72) and electric tee II branch pipe one (71).

6. The high-efficiency reversing ventilation device according to claim 4, characterized in that: The electric tee II (7) is also equipped with a reversing valve II (9) with the same internal structure as the reversing valve I (5).

7. The high-efficiency reversing ventilation device according to claim 6, characterized in that: The angle range that can be changed by the reversing valve disc I (5) and the reversing valve disc II (9) is 0° to 45°.

8. A high-efficiency reversing ventilation device according to any one of claims 1-7, characterized in that: The reversing ventilation system also includes an exhaust duct system, a blower duct system, and a control system; The air duct system discharges the air inside the ventilation scene into the outside through the sequentially connected T-shaped main pipe (63), T-shaped branch pipe 2 (62), electric T-shaped branch pipe 1 (71), electric T-shaped main pipe 2 (73), pipe 3 (12), fan (13), pipe 4 (14), electric T-shaped main pipe 1 (33), electric T-shaped branch pipe 1 (31) and pipe 1 (2).

9. A high-efficiency reversing ventilation device according to claim 8, characterized in that: The aforementioned blower duct system allows outside air to enter the ventilation scene through the sequentially connected duct II (10), electric tee II branch pipe II (72), electric tee II main pipe (73), duct III (12), fan (13), duct IV (14), electric tee I main pipe (33), electric tee I branch pipe II (32), tee branch pipe I (61), and tee main pipe (63).

10. A high-efficiency reversing ventilation device according to claim 9, characterized in that: The control system includes a controller (16) which is electrically connected to directional valve I (5) and directional valve II (9).

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