Three-way reversing valve and ventilation system

Abstract

The utility model relates to the technical field of ventilation systems, in particular to a three-way reversing valve and a ventilation system.The valve comprises a flat hollow three-way shell, an outlet connecting plate is arranged at the top of the three-way shell, an outlet is formed in the three-way shell, a first inclined plate and a second inclined plate which are in a splayed shape are symmetrically arranged on the two sides of the outlet connecting plate, and an ash receiving groove is formed in the bottom of the outlet connecting plate; a first inlet connecting plate and a second inlet connecting plate are symmetrically arranged on two sides of the ash receiving groove and are respectively provided with an inlet, the other end of the first inlet connecting plate is connected with the first inclined plate, and the other end of the second inlet connecting plate is connected with the second inclined plate; a rotationally-connected blade is further arranged in the three-way shell, the blade can rotationally cover any one of the two inlets in the shell, and a detachably-connected access door is further arranged in front of the three-way shell. The three-way reversing valve is larger in size, meanwhile, the ash receiving groove and the sealing gasket are arranged, and flexible switching of the blades is guaranteed through the design of the three-way shell.

Description

Technical Field

[0001] This utility model relates to the field of ventilation system technology, specifically a three-way reversing valve and a ventilation system. Background Technology

[0002] As an important component of the system, the fan is often used in a backup configuration. A three-way reversing valve is used to quickly switch between the fans in use.

[0003] Currently, there is only one backup fan. When a fan in use needs to be repaired or replaced, the fan needs to be disassembled and the backup fan needs to be reinstalled, which is time-consuming and laborious, and may even cause serious losses due to downtime and replacement.

[0004] Utility model application CN201821523775.7, filed on September 18, 2018, discloses a mine local ventilation fan and duct switching device, including a first fan side, a second fan side, a three-way main body, a duct side, and a baffle. The first fan side, the second fan side, the three-way main body, and the duct side are sequentially connected and interconnected, forming a "Y"-shaped structure. A bearing and a rotating shaft are provided at the intersection of the three-way main body with the first and second fan sides, and a baffle is fixedly connected to the outer wall of the rotating shaft. The baffle is movably connected to the three-way main body through the bearing and the rotating shaft, and the three-way main body and the baffle are made of iron. However, during ventilation fan switching, the design of the outer shell of this device is not conducive to the blades rotating from one inlet to another, the structure is too compact, and there is no sealing. It has certain requirements on the airflow required for switching, and there is no place to store dust during equipment operation, which can easily enter the system and affect the overall operation of the equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a three-way reversing valve and ventilation system to overcome the problems of poor sealing effect during switching, inflexible blade switching, and lack of dust collection in the prior art. The three-way reversing valve is larger in size and is equipped with a dust collection groove and a sealing gasket. The design of the three-way shell ensures flexible blade switching and improves blade switching efficiency.

[0006] The purpose of this utility model is achieved as follows: a three-way reversing valve includes a flat, hollow three-way housing. The top of the three-way housing is an outlet connecting plate with an outlet. A first inclined plate and a second inclined plate in a figure-eight shape are symmetrically arranged on both sides of the outlet connecting plate. The bottom is a ash receiving trough. A first inlet connecting plate and a second inlet connecting plate are symmetrically arranged on both sides of the ash receiving trough. Each of the two plates has an inlet. The other end of the first inlet connecting plate is connected to the first inclined plate, and the other end of the second inlet connecting plate is connected to the second inclined plate.

[0007] The tee housing also has rotatably connected blades inside, which can rotate to cover either of the two inlets inside the housing. The tee housing also has a detachable maintenance door at the front.

[0008] Preferably, the first inlet connecting plate, the second inlet connecting plate, the outlet connecting plate, the first inclined plate, and the second inclined plate are all square thin plates.

[0009] The outlet connection plate is arranged horizontally.

[0010] The vertical height of the first inclined plate is greater than the vertical height of the first inlet connecting plate.

[0011] The first inclined plate is tilted at an angle between 130° and 123° relative to the outlet connecting plate. The tilt angle of the first inclined plate can help disperse dust in the environment where the three-way valve is used, allowing the falling dust to slide down along the first and second inclined plates.

[0012] The center of the ash collection trough and the rotation center of the blade are located on the center line of the outlet connecting plate. The ash collection trough is a U-shaped structure with the opening facing upwards. Under the condition of increasing the included angle between the two inlets, the space between the two inlets becomes larger, and more ash accumulates. The design of the ash collection trough can make better use of this space.

[0013] Furthermore, a dust collection plug is installed at the bottom of the dust collection trough to facilitate dust collection and cleaning.

[0014] The two inlets are connected to two air intake channels, which curve downwards and extend to the bottom of the ash collection trough.

[0015] The blade is connected to the tee housing via a door shaft and a bearing. The blade is welded to the door shaft, the door shaft is mounted on the bearing, and the bearing is mounted on the tee housing.

[0016] The shortest distance from the first inclined plate to the center of the blade's rotation trajectory is greater than the blade length. This design allows the blade to rotate flexibly inside the T-shaped housing.

[0017] The blade rotation center is located at the intersection of the line connecting the first inlet connecting plate and the second inlet connecting plate.

[0018] Inside the tee housing, each of the two inlets is equipped with annular sealing gaskets. The inner diameter of the sealing gaskets is larger than the inlet diameter, allowing the blades to rotate and cover the gaskets. To ensure a complete seal when the blades cover the inlets, the blades must simultaneously contact both the lowest and highest points of the same inlet.

[0019] The inspection door is similar in shape to the tee housing and is centrally located in front of the tee housing.

[0020] Furthermore, the access door and the tee housing are detachably connected by bolts.

[0021] This utility model also provides a ventilation system, including a user unit and a standby unit. The ventilation system also includes the three-way reversing valve and system piping mentioned above. The two inlets of the three-way reversing valve are respectively connected to the user unit and the standby unit, and the outlet is connected to the system piping.

[0022] As described above, the three-way reversing valve and ventilation system provided by this utility model have the following beneficial effects:

[0023] (1) The ventilation system structure of this utility model is more spacious. When the operating machine has a problem, you only need to stop the operating machine and start the standby machine to automatically switch to the standby machine. There is no need to disassemble the operating machine. It can be switched directly. The blades rotate flexibly and the switching time is short.

[0024] (2) The three-way reversing valve of this utility model can improve the fit between the inlet and the blade by designing a sealing gasket, thereby improving the sealing performance and reducing the requirements for the input gas flow rate.

[0025] (3) The three-way reversing valve of this utility model is also provided with an inspection door, which allows for convenient inspection and observation.

[0026] (4) The three-way reversing valve of this utility model is also provided with a dust collection groove for collecting dust during the use of the machine, and a dust collection plug is also provided for easy cleaning. Attached Figure Description

[0027] In the attached diagram:

[0028] Figure 1 This is a structural diagram of a three-way directional valve according to the present invention.

[0029] Figure 2 This is a cross-sectional view of a three-way directional valve according to this utility model;

[0030] Figure 3 This is a side view of a three-way directional valve according to the present invention;

[0031] Figure 4 This is a side view of the overall structure of a ventilation system according to the present invention;

[0032] Figure 5 This is a front view of the overall structure of a ventilation system according to this utility model.

[0033] The components represented by the various reference numerals in the diagram are:

[0034] 1. Three-way housing; 2. Air intake passage; 3. System piping; 4. Ash collection trough; 5. Ash collection plug; 6. Blade; 7. Inspection door; 8. Sealing gasket. Detailed Implementation

[0035] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0036] The purpose of this utility model is achieved as follows: a three-way reversing valve, comprising a flat, hollow three-way housing 1, see [link to utility model]. Figure 1 The top of the three-way housing 1 is an outlet connection plate with an outlet. The outlet connection plate is symmetrically arranged with a first inclined plate and a second inclined plate in the shape of an "eight" on both sides. The bottom is a ash receiving trough 4. The ash receiving trough 4 is symmetrically arranged with a first inlet connection plate and a second inlet connection plate on both sides. Each of the two is provided with an inlet. The other end of the first inlet connection plate is connected to the first inclined plate, and the other end of the second inlet connection plate is connected to the second inclined plate.

[0037] The interior of the tee housing 1 is also provided with a rotatably connected blade 6, which can rotate to cover either of the two inlets inside the housing. The front of the tee housing 1 is also provided with a detachable maintenance door 7.

[0038] Preferably, the first inlet connecting plate, the second inlet connecting plate, the outlet connecting plate, the first inclined plate, and the second inclined plate are all square thin plates.

[0039] The outlet connection plate is arranged horizontally.

[0040] The vertical height of the first inclined plate is greater than the vertical height of the first inlet connecting plate.

[0041] Furthermore, the tilt angle of the first inclined plate relative to the outlet connecting plate is between 130° and 123°. The tilt angle of the first inclined plate can help disperse dust in the environment where the three-way valve is used, allowing the falling dust to slide down along the first and second inclined plates.

[0042] The center of the ash collection trough 4 and the rotation center of the blade 6 are located on the center line of the outlet connecting plate. The ash collection trough 4 is a U-shaped structure with the opening facing upward. When the distance between the two inlets is increased, the space between the two inlets becomes larger, resulting in more ash accumulation and the need for regular cleaning. The design of the ash collection trough 4 can make better use of this space.

[0043] Furthermore, a dust collection plug 5 is provided at the bottom of the dust collection trough 4 to facilitate dust collection and cleaning.

[0044] The two inlets are connected to two air intake channels 2 respectively, and the air intake channels 2 bend downwards and extend to the bottom of the ash receiving trough 4.

[0045] The three-way housing 1 and the two air intake channels 3 are integrally molded, which is simple in process and low in production cost.

[0046] Blade 6 is connected to the three-way housing 1 via a door hinge and a bearing. Blade 6 is welded to the door hinge, the door hinge is mounted on the bearing, and the bearing is mounted on the three-way housing 1. Figure 1 and Figure 2 As shown.

[0047] The welded connection between the door hinge and the blade 6 provides robust structural support, allowing the blade 6 to rotate stably around the door hinge. The introduction of bearings reduces friction and wear on the door hinge during rotation, improving the durability of the three-way valve. The bearings also make the rotating part of the door hinge relatively independent from the fixed part of the three-way housing 1, which facilitates easier inspection and replacement of worn parts during maintenance.

[0048] The welded connection between the blades 6 and the door hinge also provides a more robust structure, reducing failures caused by loose components.

[0049] The shortest distance from the first inclined plate to the center of the rotation trajectory of blade 6 is greater than the length of blade 6. This design allows blade 6 to rotate flexibly inside the three-way housing 1.

[0050] The rotation center of blade 6 is located at the intersection of the line connecting the first inlet connecting plate and the second inlet connecting plate.

[0051] Inside the tee housing 1, two annular sealing gaskets 8 are respectively provided on the two inlets. The inner diameter of the sealing gasket 8 is larger than the inlet diameter, and the blade 6 can rotate to cover the sealing gasket 8. To ensure a complete seal of the inlet when the blade 6 covers it, the blade 6 must simultaneously contact the lowest and highest points of the same inlet.

[0052] The inspection door 7 is similar in shape to the tee housing 1 and is centrally located in front of the tee housing 1.

[0053] Furthermore, the access door 7 is detachably connected to the three-way housing 1 by bolts. This design of the access door 7 ensures both aesthetic appeal and ease of quick opening and closing.

[0054] This utility model also provides a ventilation system, including a user unit and a standby unit. The ventilation system also includes the aforementioned three-way reversing valve and system pipe 3. The two inlets of the three-way reversing valve are respectively connected to the user unit and the standby unit. Figure 3 This illustrates pipe 3, which connects to the outlet connection system.

[0055] This utility model three-way reversing valve is a device installed at the outlet of a fan that automatically switches between fans. When the fan malfunctions, simply stop the fan and start the standby fan to automatically switch to the standby fan. There is no need to disassemble the fan; the standby fan can be switched directly.

[0056] Traditional systems have only one user unit connected to system pipe 3. If this user unit encounters a problem during use and needs to be replaced, the user unit connected to system pipe 3 must be disassembled and a backup unit reinstalled and connected to system pipe 3.

[0057] After the operating unit and standby unit are connected to the three-way reversing valve, they are all connected to system pipe 3, such as... Figure 4 and Figure 5 As shown, when the unit needs maintenance or replacement, simply disconnect the power supply to the unit and turn on the power to the standby unit to directly use it in the ventilation system.

[0058] When the main unit is turned on, since the standby unit is not turned on, the airflow blows the blades 6 toward the standby fan side by the wind force, and then the airflow flows out through the outlet. Since the rubber gasket 8 is laid between the blades 6 and the casing, the sealing performance is good and there will be no air leakage.

Claims

1. A three-way directional valve, characterized in that, Including a flat, hollow tee shell (1); The top of the three-way housing (1) is an outlet connecting plate with an outlet. The outlet connecting plate is symmetrically arranged with a first inclined plate and a second inclined plate in the shape of an "eight" on both sides. The bottom is a ash receiving trough (4). The ash receiving trough (4) is symmetrically arranged with a first inlet connecting plate and a second inlet connecting plate on both sides. Each of the two is provided with an inlet. The other end of the first inlet connecting plate is connected to the first inclined plate, and the other end of the second inlet connecting plate is connected to the second inclined plate. The three-way housing (1) is also provided with a rotatably connected blade (6), which can rotate to cover either of the two inlets inside the housing. The three-way housing (1) is also provided with a detachably connected maintenance door (7).

2. A three-way directional valve according to claim 1, characterized in that, The outlet connection plate is arranged horizontally.

3. A three-way directional valve according to claim 2, characterized in that, The vertical height of the first inclined plate is greater than the vertical height of the first inlet connecting plate.

4. A three-way directional valve according to claim 2, characterized in that, The center of the ash receiving trough (4) and the rotation center of the blade (6) are located on the center line of the outlet connecting plate. The ash receiving trough (4) is a U-shaped structure with the opening facing upwards. The bottom of the ash receiving trough (4) is provided with an ash receiving plug (5).

5. A three-way directional valve according to claim 4, characterized in that, The shortest length from the first inclined plate to the center of the rotation trajectory of the blade (6) is greater than the length of the blade (6).

6. A three-way directional valve according to claim 4, characterized in that, The blade (6) is connected to the three-way housing (1) via a door hinge and a bearing. The blade (6) is welded to the door hinge, the door hinge is mounted on the bearing, and the bearing is mounted on the three-way housing (1).

7. A three-way directional valve according to claim 1, characterized in that, The two inlets are connected to two air intake channels (2), which are curved downwards and extend to the bottom of the ash collection trough.

8. A three-way directional valve according to claim 1, characterized in that, The inspection door (7) is similar in shape to the three-way housing (1) and is centrally located in front of the three-way housing (1).

9. A three-way directional valve according to claim 1, characterized in that, The three-way housing (1) is provided with two annular sealing gaskets (8) on its two inlets. The inner diameter of the sealing gasket (8) is larger than the inlet diameter, and the blade (6) can rotate to cover the sealing gasket (8).

10. A ventilation system, characterized in that, The ventilation system includes a user unit and a standby unit, and further includes a three-way reversing valve and a system pipe (3) as described in any one of claims 1 to 9, wherein the two inlets of the three-way reversing valve are respectively connected to the user unit and the standby unit, and the outlet is connected to the system pipe (3).

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