A special logic conversion valve for opening and closing pneumatic smoke exhaust skylights

Abstract

The present invention discloses a special logic conversion valve for opening and closing a pneumatic smoke exhaust skylight, which comprises a control box. A first air path channel and a second air path channel are connected to the control box. The first air path channel is connected to a first system air control valve and is used for supplying air to the first system air control valve. The second air path channel is connected to a second system air control valve, and the skylight is controlled to close through the exhaust and air supply of the second air path channel. A first logic valve is installed between the first air path channel and the first system air control valve, and a second logic valve is installed between the second air path channel and the second system air control valve. The beneficial effects of the present invention are that the air path conversion is realized through the set pneumatic logic valve, the skylight can be opened and closed according to the process requirements and ventilation requirements, the opening and closing mode of the skylight can be flexibly controlled, the use requirements of the working area can be met, it is convenient for installation, the installation construction risk can be reduced, and the system control stability and safety are high during the working process.

Description

Technical Field

[0001] The present invention relates to the technical field of smoke exhaust skylight control, and in particular to a special valve for logic conversion for opening and closing pneumatic smoke exhaust skylights. Background Art

[0002] Existing pneumatic daylighting and smoke exhaust skylights in industrial projects are not only used for smoke exhaust, but also for normal ventilation and air change. In the prior art, the control methods for multiple skylights on the same air path are three states: opening simultaneously / closing simultaneously / fire linkage opening; the partial opening function cannot be achieved; however, when ventilating and opening normally, if a certain skylight is inconvenient to open due to the requirements of the indoor production process of the building, it will cause multiple skylights on the same air path to be unable to open, which cannot meet the usage requirements of the working area and affect the on-site working environment.

[0003] In view of the above situation, it is necessary to improve the existing control method of smoke exhaust skylights so that it can meet the current need for local opening of smoke exhaust skylights. Summary of the Invention

[0004] Since the prior art cannot achieve local opening of smoke exhaust skylights during use and cannot meet our usage requirements, we have designed a special valve for logic conversion for opening and closing pneumatic smoke exhaust skylights on the basis of the defects of the prior art, which can adjust the partial opening state of the skylight and has good usage effects.

[0005] To achieve the above object, the technical solution of the present invention is a special valve for logic conversion for opening and closing pneumatic smoke exhaust skylights, which is used for a skylight opening and closing system. It includes a control box, and a first air path channel and a second air path channel are connected to the control box. The first air path channel is connected to a first system air control valve and is used to supply air to the first system air control valve. The second air path channel is connected to a second system air control valve, and the skylight is controlled to close by exhausting and supplying air through the second air path channel. A first logic valve is installed between the first air path channel and the first system air control valve, and a second logic valve is installed between the second air path channel and the second system air control valve.

[0006] As a further supplement to the above technical solution, the first logic valve includes a first connection channel 1A and a first connection channel 1B for connecting the control box and the first logic valve, a first main air source A1 for connecting the first logic valve and the first system air control valve, a first control air source B1 for connecting the first logic valve and the first system air control valve, a first moving piston disposed between the first connection channel and the first main air source, and a first moving valve core connected to the first moving piston.

[0007] For further supplement to this technical solution, the second logic valve includes a second connection passage 2A, a second connection passage 2B, an exhaust passage for connecting the control box and the second logic valve, a second main air source A2 for connecting the second logic valve and the second system pneumatic control valve, a second control air source B2 for connecting the second logic valve and the second system pneumatic control valve, a second moving piston disposed between the second connection passage and the second main air source, and a second moving valve core connected to the second moving piston.

[0008] For further supplement to this technical solution, a check valve is provided between the second main air source and the second control air source, and the communication state is controlled by the check valve.

[0009] In the first working state, the skylight opening command state, both the first air passage and the second air passage are in the air supply state, one skylight is open and the other skylight is closed.

[0010] Specifically, the first connection passage 1A supplies air, the first moving piston moves, pushing the first moving valve core to move until the first connection passage 1A is connected to the first main air source A1 and the first connection passage 1B is connected to the second control air source B1. When the main air source port and the control air source port of the first system pneumatic control valve supply air simultaneously, the skylight opens;

[0011] The second connection passage 2A supplies air, the second moving piston moves, pushing the second moving valve core to move until the second connection passage 2A of the second logic valve is connected to the second main air source A2 and the second connection passage 2B is not connected to the second control air source B2. When the main air source port of the second system pneumatic control valve supplies air and the control air source port does not supply air, the skylight does not open and remains closed.

[0012] In the second working state, when the window closing system receives a closing command, the skylights controlled by the single system are all in the closed state; among them, the first air passage is in the air supply state and the second air passage is in the exhaust state.

[0013] Specifically, the first connection passage 1A on the first logic valve supplies air, the first moving piston moves, pushing the first moving valve core to move, the first connection passage 1A is connected to the first main air source A1; the first connection passage 1B is connected to the first control air source B1 for exhaust work. When the main air source port of the first system pneumatic control valve supplies air and the control air source port exhausts air, the skylight closes;

[0014] The second connection passage 2A on the second logic valve supplies air, the second moving piston moves, pushing the second moving valve core to move, the second connection passage 2A is connected to the second main air source A2, and the second connection passage 2B is not connected to the second control air source B2. When the main air source port of the second system control valve supplies air and the control air source port does not supply air, the skylight closes.

[0015] The third working state: when the skylight system receives an emergency opening command (such as a fire or a fire alarm), all the skylights controlled by the system will be fully opened for smoke exhaust function.

[0016] Specifically, the working mode in the emergency opening state is as follows: the first connection channel 1A does not supply air, the first moving piston resets, the first moving valve core resets, the first connection channel 1A is disconnected from the first main air source A1, the first connection channel 1B is in communication with both the first main air source A1 and the first control air source B1. When the main air source port and the control air source of the first system pneumatic control valve are simultaneously supplied with air by the second connection channel 1B, the skylight opens.

[0017] The second connection channel 2A does not supply air, the second moving piston resets, the second moving valve core resets, the second connection channel 2A is disconnected from the second main air source A2, the second connection channel 2B is in communication with the second control air source, and at the same time the second main air source A2 is in communication with the second control air source B2 through a check valve. When the main air source port and the control air source of the second system pneumatic control valve are simultaneously supplied with air by the second connection channel 2B, the skylight opens.

[0018] Its beneficial effects are as follows: by setting the pneumatic logic valve to realize the air path conversion, the skylight can be opened and closed according to the process requirements and ventilation needs, realizing a flexible control mode for opening and closing the skylight, meeting the usage requirements of the working area, being easy to install, being able to reduce the installation construction risk, and having high system control stability and safety during the working process. Brief Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the skylight in the open state of the present invention;

[0020] Figure 2 is a schematic structural diagram of the skylight in the closed command state of the present invention;

[0021] Figure 3 is a schematic structural diagram of the skylight system in the emergency opening state of the present invention;

[0022] In the figure, 1, control box; 2, first air path channel; 3, second air path channel; 4, first system control valve; 5, second system control valve; 6, first logic valve; 61, first connection channel 1A; 62, first connection channel 1B; 63, first main air source A1; 64, first control air source B1; 65, first moving piston; 66, first moving valve core; 7, second logic valve; 71, second connection channel 2A; 72, second connection channel 2B; 73, exhaust channel; 74, second main air source A2; 75, second control air source B2; 76, second moving piston; 77, second moving valve core; 78, check valve. Detailed Description of the Invention

[0023] Since the existing technology cannot achieve partial opening of the smoke exhaust skylight during use and cannot meet our usage requirements, we have designed a special logic conversion valve for opening and closing pneumatic smoke exhaust skylights on the basis of the defects of the existing technology, which can adjust the partial opening state of the skylight and has good usage effects.

[0024] To make it clearer for those skilled in the art to understand this technical solution, the following will combine the attached Figures 1-3 Elaborate on the technical solution of the present invention in detail:

[0025] A special logic conversion valve for opening and closing pneumatic smoke exhaust skylights, which is used in the skylight opening and closing system. It includes a control box 1, and a first air passage 2 and a second air passage 3 are connected to the control box 1. The first air passage 2 is connected to the first system air control valve and is used to supply air to the first system air control valve. The second air passage 3 is connected to the second system air control valve, and the skylight is controlled to close by exhausting and supplying air through the second air passage 3. A first logic valve 6 is installed between the first air passage 2 and the first system air control valve, and a second logic valve 7 is installed between the second air passage 3 and the second system air control valve; the first logic valve 6 includes a first connection passage 1A61 and a first connection passage 1B62 for connecting the control box 1 and the first logic valve 6, a first main air source A163 for connecting the first logic valve 6 and the first system air control valve, a first control air source B164 for connecting the first logic valve 6 and the first system air control valve, a first moving piston 65 arranged between the first connection passage and the first main air source, and a first moving valve core 66 connected to the first moving piston 65; the second logic valve 7 includes a second connection passage 2A71 and a second connection passage 2B72 for connecting the control box 1 and the second logic valve 7, an exhaust passage 73, a second main air source A274 for connecting the second logic valve 7 and the second system air control valve, a second control air source B275 for connecting the second logic valve 7 and the second system air control valve, a second moving piston 76 arranged between the second connection passage and the second main air source, and a second moving valve core 77 connected to the second moving piston 76. Further, a check valve 78 is provided between the second main air source and the second control air source to control the communication state through the check valve 78.

[0026] The present invention is respectively set into 3 working states according to needs, as follows:

[0027] The first working state is the skylight opening command state. Both the first air passage 2 and the second air passage 3 are in the air supply state, and one skylight is open while the other skylight is closed.

[0028] Specifically, the first connection passage 1A61 supplies air, the first moving piston 65 moves, pushing the first moving valve core 66 to move until the first connection passage 1A61 communicates with the first main air source A163, and the first connection passage 1B62 communicates with the second control air source B1. When the main air source port and the control air source port of the first system pneumatic control valve supply air simultaneously, the skylight opens;

[0029] The second connection passage 2A71 supplies air, the second moving piston 76 moves, pushing the second moving valve core 77 to move until the second connection passage 2A71 of the second logic valve 7 communicates with the second main air source A274, and the second connection passage 2B72 is not in communication with the second control air source B275. When the main air source port of the second system pneumatic control valve supplies air and the control air source port does not supply air, the skylight does not open and remains closed.

[0030] In the second working state, when the window closing system receives a closing command, the skylights controlled by the single system are all in the closed state; among them, the first air passage 2 is in the air supply state, and the second air passage 3 is in the exhaust state.

[0031] Specifically, the first connection passage 1A61 on the first logic valve 6 supplies air, the first moving piston 65 moves, pushing the first moving valve core 66 to move, and the first connection passage 1A61 communicates with the first main air source A163; the first connection passage 1B62 communicates with the first control air source B164 to perform the exhaust work. When the main air source port of the first system pneumatic control valve supplies air and the control air source port exhausts air, the skylight closes;

[0032] The second connection passage 2A71 on the second logic valve 7 supplies air, the second moving piston 76 moves, pushing the second moving valve core 77 to move, the second connection passage 2A71 communicates with the second main air source A274, and the second connection passage 2B72 is not in communication with the second control air source B275. When the main air source port of the second system control valve 5 supplies air and the control air source port does not supply air, the skylight closes.

[0033] In the third working state, when the skylight system receives an emergency opening (such as a fire or a fire alarm) command, all the skylights controlled by the system open for the smoke exhaust function.

[0034] Specifically, the working mode in the emergency opening state is as follows: the first connection passage 1A61 does not supply air, the first moving piston 65 resets, the first moving valve core 66 resets, the first connection passage 1A61 is disconnected from the first main air source A163, and the first connection passage 1B62 communicates with both the first main air source A163 and the first control air source B164. When the main air source port and the control air source of the first system pneumatic control valve are simultaneously supplied with air by the second connection passage 1B, the skylight opens;

[0035] When the second connection passage 2A71 is not supplied with gas, the second moving piston 76 is reset, the second moving valve core 77 is reset, the second connection passage 2A71 is disconnected from the second main gas source A274, the second connection passage 2B72 is communicated with the second control gas source, and at the same time, the second main gas source A274 is communicated with the second control gas source B275 through the check valve 78; when the main gas source port and the control gas source of the second system pneumatic control valve are simultaneously supplied with gas through the second connection passage 2B72, the skylight opens.

[0036] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that those skilled in the art may make to some parts thereof all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A special logic conversion valve for opening and closing a pneumatic smoke exhaust skylight, which is used in a skylight opening and closing system. It includes a control box (1). A first air passage (2) and a second air passage (3) are connected to the control box (1). The first air passage (2) is connected to a first system pneumatic control valve and is used to supply air to the first system pneumatic control valve. The second air passage (3) is connected to a second system pneumatic control valve, and the skylight is controlled to close by exhausting and supplying air through the second air passage (3). It is characterized in that, A first logic valve (6) is installed between the first gas path channel (2) and the first system gas control valve, and a second logic valve (7) is installed between the second gas path channel (3) and the second system gas control valve; The first logic valve (6) includes a first connection channel 1A (61), a first connection channel 1B (62) for connecting the control box (1) and the first logic valve (6), a first main gas source A1 (63) for connecting the first logic valve (6) and the first system gas control valve, a first control gas source B1 (64) for connecting the first logic valve (6) and the first system gas control valve, a first moving piston (65) disposed between the first connection channel and the first main gas source, and a first moving valve core (66) connected to the first moving piston (65); The second logic valve (7) includes a second connection channel 2A (71), a second connection channel 2B (72), an exhaust channel (73) for connecting the control box (1) and the second logic valve (7), a second main gas source A2 (74) for connecting the second logic valve (7) and the second system gas control valve, a second control gas source B2 (75) for connecting the second logic valve (7) and the second system gas control valve, a second moving piston (76) disposed between the second connection channel and the second main gas source, and a second moving valve core (77) connected to the second moving piston (76); When the first connection channel 1A (61) supplies gas, the first moving piston (65) moves, pushing the first moving valve core (66) to move until the first connection channel 1A (61) is communicated with the first main gas source A1 (63), and the first connection channel 1B (62) is communicated with the second control gas source B1. When the main gas source port and the control gas source port of the first system gas control valve supply gas simultaneously, the skylight opens; When the second connection channel 2A (71) supplies gas, the second moving piston (76) moves, pushing the second moving valve core (77) to move until the second connection channel 2A (71) of the second logic valve (7) is communicated with the second main gas source A2 (74), and the second connection channel 2B (72) is not communicated with the second control gas source B2 (75). When the main gas source port of the second system gas control valve supplies gas and the control gas source port does not supply gas, the skylight does not open and remains closed; When the window closing system receives a closing command, the skylights controlled by a single system are all in the closed state; among them, the first gas path channel (2) is in the gas supply state, and the second gas path channel (3) is in the exhaust state.

2. The special valve for logic conversion used for opening and closing a pneumatic smoke exhaust skylight according to claim 1, characterized in that, A check valve (78) is provided between the second main gas source and the second control gas source, and the communication state is controlled by the check valve (78).

3. The special logic conversion valve for opening and closing the pneumatic smoke exhaust skylight according to claim 2, wherein, In the skylight opening command state, both the first gas path channel (2) and the second gas path channel (3) are in the gas supply state, and one skylight opens while the other skylight closes.

4. The special logic conversion valve for opening and closing a pneumatic smoke exhaust skylight according to claim 1, characterized in that, The first connection passage 1A (61) on the first logic valve (6) is supplied with gas, the first moving piston (65) moves, pushing the first moving valve core (66) to move, and the first connection passage 1A (61) communicates with the first main gas source A1 (63); the first connection passage 1B (62) communicates with the first control gas source B1 (64) to perform the exhaust work. When the main gas source port of the first system pneumatic control valve supplies gas and the control gas source port exhausts gas, the skylight closes. The second connection passage 2A (71) on the second logic valve (7) is supplied with gas, the second moving piston (76) moves, pushing the second moving valve core (77) to move, the second connection passage 2A (71) communicates with the second main gas source A2 (74), and the second connection passage 2B (72) is not in communication with the second control gas source B2 (75). When the main gas source port of the second system control valve (5) supplies gas and the control gas source port does not supply gas, the skylight closes.

5. The special logic conversion valve for opening and closing the pneumatic smoke exhaust skylight according to claim 2, characterized in that, When the skylight system receives an emergency opening command, all the skylights controlled by the system are fully opened for the smoke exhaust function.

6. The special logic conversion valve for opening and closing the pneumatic smoke exhaust skylight according to claim 5, characterized in that, The working mode in the emergency opening state is as follows: The first connection passage 1A (61) is not supplied with gas, the first moving piston (65) resets, the first moving valve core (66) resets, the first connection passage 1A (61) is disconnected from the first main gas source A1 (63), and the first connection passage 1B (62) communicates with both the first main gas source A1 (63) and the first control gas source B1 (64). When the main gas source port and the control gas source of the first system pneumatic control valve are simultaneously supplied with gas by the second connection passage 1B, the skylight opens. The second connection passage 2A (71) is not supplied with gas, the second moving piston (76) resets, the second moving valve core (77) resets, the second connection passage 2A (71) is disconnected from the second main gas source A2 (74), the second connection passage 2B (72) communicates with the second control gas source, and at the same time, the second main gas source A2 (74) communicates with the second control gas source B2 (75) through the one-way valve (78); when the main gas source port and the control gas source of the second system pneumatic control valve are simultaneously supplied with gas by the second connection passage 2B (72), the skylight opens.

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