Automatic control device for electric air valve of mechanical exhaust system in sewage treatment room

Abstract

The utility model relates to an automatic control device for an electric air valve of a mechanical exhaust system of a sewage treatment room. The automatic control device comprises an air inlet air valve, a first exhaust fan, an exhaust fan control box and a second exhaust fan which are assembled in the sewage treatment room, an air valve actuator is assembled on the air inlet air valve; the exhaust fan control box is electrically connected with the first exhaust fan, the second exhaust fan and the air valve actuator through control circuits. The electric air valve automatic control device is simple in structure and suitable for a machine room at a pollution source of a BA-free building equipment monitoring system, adopts a set of novel electric air valve automatic control device for the mechanical exhaust system of the sewage treatment room, is low in construction, installation and maintenance cost and reliable in performance, and meets the requirements of the technology specialty on maintenance of mechanical ventilation of the sewage treatment room and relative negative pressure of an adjacent room.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the exhaust system control technical field, specifically relates to a sewage treatment room mechanical exhaust system electric air valve automatic control device. BACKGROUND

[0002] According to " civil building heating ventilation and air conditioning design specification " GB50736-2012 6.3.7 equipment machine room should keep good ventilation, when there is no natural ventilation, mechanical ventilation system should be set.

[0003] According to " general hospital building design specification " GB51039-2014 7.1.6 and 7.1.6 article, " the room of smell, moisture and damp operation should be set mechanical exhaust. " " this article emphasizes that mechanical exhaust should be set at the pollution source, and the room where the pollution source is located is kept under pressure. " According to Shanghai engineering construction specification " public building green design standard " DG / TJ 08-2143-2018J 12671-2018 9.4.6, " the room or area of odor or pollutant should be set mechanical ventilation system, and the relative negative pressure of adjacent room is maintained. Exhaust should be directly discharged to the outdoor. Kitchen, garbage room, oil separation room and the like should be set odor removal device. " It can be seen that under the condition of natural ventilation, it is difficult to ensure that the sewage treatment room, oil separation room and toilet are under negative pressure relative to other public areas, which is easy to pollute the air of surrounding public areas.

[0004] Therefore, in order to prevent the odor of public toilet, sewage treatment room and the like from overflowing, ensure the environment of working area, mechanical ventilation should be set in the above room and machine room, which can effectively control the negative pressure in the room to ensure the air quality of public toilet, sewage treatment room and surrounding area.

[0005] According to the requirement of heating and ventilation process, mechanical ventilation is set in the sewage treatment room, and the relative negative pressure of adjacent room is maintained. In the process of mechanical ventilation, in order to ensure the negative pressure of environment, the key technical point is that the process professional should clearly define the time sequence control requirement of electric air valve and fan interlocking on the inlet (exhaust pipe) in the investment, that is, the air valve is started first, and the exhaust fan is stopped. The process should be closed first.

[0006] Due to cost consideration, in many engineering practical application scenes, the construction unit does not set BA building equipment monitoring system. Construction unit, design, factory, fan, air valve actuator manufacturer, all parties do not fully communicate, combined with the fact that there is no electric air valve wiring scheme in the current national building standard design drawing, the performance parameters of air valve actuator purchased by construction unit on site often cannot match AC220V control wiring, the deepening order drawing of factory does not meet the logic relationship of air valve time delay interlocking start and stop fan, and the on-site construction wiring is uncontrollable, which causes wind and fan burning in the process of debugging.

[0007] In view of the above technical problems, improvements are needed. Content of the utility model

[0008] The utility model discloses to overcome the defects in the prior art, provide a simple and reasonable structure, the construction cost is low, reliable performance, to ensure that the mechanical exhaust system electric wind valve automatic control device of sewage treatment room mechanical exhaust requirement of sewage treatment room.

[0009] In order to achieve the above object, the utility model adopts the technical scheme: a sewage treatment room mechanical exhaust system electric wind valve automatic control device, including the air inlet valve of assembly in the sewage treatment room, first exhaust fan, exhaust fan control box and the second exhaust fan, the air inlet valve is equipped with the air valve actuator, and the exhaust fan control box is electrically connected with first exhaust fan, second exhaust fan and air valve actuator through control circuit.

[0010] As a preferred mode of the utility model, the first exhaust fan control appliance in the exhaust fan control box adopts a contactor.

[0011] As a preferred mode of the utility model, the exhaust fan control box is provided with a manual start-stop button, a hand / auto change-over switch and a manual control change-over switch.

[0012] As a preferred mode of the utility model, the exhaust fan control box is provided with a fan start / stop signal lamp and an electric wind valve opening / closing signal lamp, wherein the first exhaust fan and the air valve actuator start-stop action signal auxiliary contact points respectively light up the fan start / stop signal lamp and the electric wind valve opening / closing signal lamp on the exhaust fan control box.

[0013] As a preferred mode of the utility model, a single-link double-control switch flap switch is arranged at the entrance of the sewage treatment room, and the series connection of the air valve actuator wiring terminal and the single-link double-control switch flap switch contact point achieves the time sequence interlocking control requirement of the air valve actuator and the second exhaust fan.

[0014] As a preferred mode of the utility model, the exhaust fan control box is electrically connected with a 70 DEG C fireproof valve, and the 70 DEG C fireproof valve is arranged between the air valve actuator and the second exhaust fan.

[0015] As a preferred mode of the utility model, the single-link double-control switch flap switch is connected with the air valve actuator motor, which is used to drive the opening or closing of the air inlet valve and the air valve actuator.

[0016] As a preferred mode of the utility model, the first exhaust fan is a three-phase asynchronous squirrel cage motor.

[0017] As a preferred mode of the utility model, the second exhaust fan is a single-phase asynchronous squirrel cage motor.

[0018] The utility model discloses the beneficial effect is:

[0019] 1. The utility model discloses simple structure is applicable to the pollution source place machine room of BA building equipment monitoring system, adopts a new type sewage treatment room mechanical exhaust system electric air valve automatic control device, and the cost of construction and maintenance is low, and the performance is reliable, and the relative negative pressure requirement of maintaining with adjacent room of process specialty to sewage treatment room mechanical ventilation is satisfied.

[0020] 2. The utility model discloses based on the exhaust amount calculation in the pollution source machine room, and the process specialty selects the exhaust fan of different voltage grade, and the electrical specialty provides the exhaust fan and electric air valve interlock control wiring scheme accordingly, solves the requirement of fan start-stop and air valve associated action in the area of pollution source under different working conditions, and wiring and operation are simple, safe and reliable, and satisfy the mechanical exhaust requirement of pollution source place machine room of process specialty. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the sewage treatment room machine exhaust fan control box distribution system diagram (one) of the utility model embodiment;

[0022] Figure 2 It is the sewage treatment room first exhaust fan and air valve actuator control circuit diagram of the utility model embodiment;

[0023] Figure 3 It is the sewage treatment room machine exhaust fan control box distribution system diagram (two) of the utility model embodiment

[0024] Figure 4 It is the single connection double -control switch rocker switch control air valve actuator and fan connection diagram of the utility model embodiment;

[0025] Figure 5 It is the single connection double -control switch rocker switch control air valve actuator and fan plane layout of the utility model embodiment;

[0026] In the drawing, reference numerals: air inlet valve 1, air valve actuator 2, first exhaust fan 3, exhaust fan control box 4, second exhaust fan 5, single connection double -control switch rocker switch 6, control circuit 7, contactor 8, manual start-stop button 9, hand / automatic change-over switch 10, manual control change-over switch 11, fan start / stop signal lamp 12, electric air valve opening / closing signal lamp 13, air valve actuator motor 14, 70 DEG C fire valve 15. DETAILED DESCRIPTION

[0027] The utility model embodiment will be described in detail below in conjunction with the drawings.

[0028] Embodiment:

[0029] For example, Figures 1-5The utility model discloses to the process professional mechanical exhaust system electric air valve and fan time sequence interlock control requirement of sewage treatment room, set up a set of sewage treatment room mechanical exhaust system electric air valve automatic control device, and the low cost of construction and installation is reliable in performance, to ensure that the mechanical exhaust requirement of sewage treatment room.

[0030] The utility model discloses a sewage treatment room mechanical exhaust system electric air valve automatic control device for the engineering personnel with management authority to manually operate the mechanical exhaust system on site.

[0031] Specifically, a sewage treatment room mechanical exhaust system electric air valve automatic control device, comprising an air inlet valve 1, a first exhaust fan 3, an exhaust fan control box 4 and a second exhaust fan 5 assembled in a sewage treatment room; the air inlet valve 1 is equipped with an air valve actuator 2; the air valve actuator 2 drives the air valve to act, the exhaust fan control box 4, the first exhaust fan 3, the second exhaust fan 5 and the air valve actuator 2 are electrically connected through a control circuit 7. Overload protection, short circuit protection and ground fault protection are provided on the main circuit of the motor; in this embodiment, the air valve actuator 2 is an AC220V on-off air valve actuator,

[0032] The first exhaust fan 3 is an AC380V exhaust fan, more specifically a three-phase asynchronous squirrel-cage motor; the air valve actuator 2 and the first exhaust fan 3 are independently protected by a power distribution circuit in the exhaust fan control box 4, and the first exhaust fan 3 control appliance in the exhaust fan control box 4 uses a contactor 8. A manual start-stop button 9 for fan maintenance, a hand / auto switch 10 for fan automatic control or interlock control, and a manual control switch 11 for air valve actuator are provided on the panel of the exhaust fan control box 4.

[0033] According to the warm process requirement, when the exhaust system is started, the hand / auto switch 10 on the panel of the exhaust fan control box is set to automatic, the manual control switch 11 for the air valve actuator is set to open, the positive rotation coil of the air valve actuator motor 14 is connected, and the air inlet valve 1 is driven to open. The open-in-place auxiliary contact of the air valve actuator 2 is connected to the main circuit contactor 8 of the first exhaust fan 3, the first exhaust fan 3 is started, and the shutdown process is the same as above. The manual control switch 11 for the air valve actuator is set to closed, the reverse rotation coil of the air valve actuator motor 14 is connected, the air inlet valve 1 is driven to close, the main circuit contactor 8 of the exhaust fan is disconnected, and the first exhaust fan 3 is stopped.

[0034] The fan start / stop signal lamp 12 and the electric air valve opening / closing signal lamp 13 are arranged on the exhaust fan control box 4; the start / stop action signal auxiliary contact of the first exhaust fan 3 and the air valve actuator 2 respectively lights up the fan start / stop signal lamp 12 and the electric air valve opening / closing signal lamp 13 on the exhaust fan control box 4.

[0035] The second exhaust fan 5 is an AC220V exhaust fan, more specifically, a single-phase asynchronous squirrel cage motor, the air valve actuator 2 and the second exhaust fan 5 share the power distribution circuit in the exhaust fan control box 4, a single connection double control switch flap switch 6 is arranged on the wall surface at the entrance of the machine room in the sewage treatment room, and the series connection of the wiring terminal of the air valve actuator 2 and the contact of the single connection double control switch flap switch 6 is used to achieve the time sequence interlocking control requirement of the air valve actuator 2 and the second exhaust fan 5.

[0036] According to the requirement of opening the exhaust system according to the heating and ventilation process, the single connection double control switch flap switch 6 is manually operated, the positive rotation coil of the air valve actuator motor 14 is connected, the air inlet valve 1 is driven to be opened, the start signal auxiliary contact of the air valve actuator 2 is connected in series, and the power supply circuit of the second exhaust fan 5 is connected. The stop process is the same as above, the single connection double control switch flap switch 6 is manually operated, the reverse rotation coil of the air valve actuator motor 14 is connected, the air inlet valve 1 is driven to be closed, the start signal auxiliary contact of the air valve actuator 2 is disconnected, and the power supply circuit of the second exhaust fan 5 is disconnected.

[0037] The exhaust fan control box 4 is electrically connected with the 70 DEG C fireproof valve 15, the 70 DEG C fireproof valve 15 is arranged between the air valve actuator 2 and the second exhaust fan 5, and the single connection double control switch flap switch 6 is connected with the air valve actuator motor 14 and used for driving the air inlet valve 1 and the air valve actuator 2 to be opened or closed.

[0038] As shown in Figure 2 Fig. 1 is a sewage treatment room first exhaust fan and air valve actuator control circuit diagram according to the present application, wherein FA1 is a fuse 1, FA2 is a fuse 2, AC220V is an air valve actuator, KA1 is a relay 1, KA2 is a relay 2, SS / SF is a manual start / stop button, QAC is a contactor 8, PGG is a fan start / stop signal lamp, PGR is an electric air valve opening / closing signal lamp, BB is a thermal relay, TC is a control transformer, and KH is a thermal overload relay.

[0039] The present application is based on the calculation of the exhaust volume in the machine room with a pollution source, the process specialty selects exhaust fans with different voltage grades, the electrical specialty provides the interlocking control wiring scheme of the exhaust fan and the electric air valve accordingly, solves the requirement of the fan start / stop and the air valve related action in the area with a pollution source under different working conditions, the wiring and operation are simple, safe and reliable, and meet the requirement of the process specialty on the mechanical exhaust of the machine room with a pollution source.

[0040] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0041] Although the terms: air inlet valve 1, air valve actuator 2, first exhaust fan 3, exhaust fan control box 4, second exhaust fan 5, single connection double control switch flap switch 6, control circuit 7, contactor 8, manual start-stop button 9, hand / auto change-over switch 10, manual control change-over switch 11, fan start / stop signal lamp 12, electric air valve opening / closing signal lamp 13, air valve actuator motor 14, 70℃ fireproof valve 15, etc. are used more frequently in the text, the possibility of using other terms is not excluded; the use of these terms is only for the convenience of describing and explaining the essence of the application; any kind of additional limitation is contrary to the spirit of the application.

Claims

1. A sewage treatment room mechanical exhaust system electric air valve automatic control device, characterized in that: The air inlet valve (1), the first exhaust fan (3), the exhaust fan control box (4) and the second exhaust fan (5) are assembled in the sewage treatment room; the air inlet valve (1) is provided with an air valve actuator (2); the exhaust fan control box (4) is electrically connected with the first exhaust fan (3), the second exhaust fan (5) and the air valve actuator (2) through a control line (7).

2. The automatic control device of the electrically operated air valve of the mechanical exhaust system of the sewage treatment room according to claim 1, characterized in that: The contactor (8) is used for the first exhaust fan (3) control electric appliance in the exhaust fan control box (4).

3. The automatic control device of the electrically operated air valve of the mechanical exhaust system of the sewage treatment room according to claim 1, characterized in that: The exhaust fan control box (4) is provided with a manual start-stop button (9), a manual / automatic switch (10) and a manual control switch (11).

4. The automatic control device of the electrically operated air valve of the mechanical exhaust system of the sewage treatment room according to claim 3, characterized in that: The exhaust fan control box (4) is provided with a fan start / stop signal lamp (12) and an electric air valve opening / closing signal lamp (13); the first exhaust fan (3) and the air valve actuator (2) start-stop action signal auxiliary contacts respectively light up the fan start / stop signal lamp (12) and the electric air valve opening / closing signal lamp (13) on the exhaust fan control box (4).

5. The automatic control device of the electrically operated air valve of the mechanical exhaust system of the sewage treatment room according to claim 1, characterized in that: The single-link double-control switch rocker switch (6) is arranged at the entrance of the sewage treatment room, the series connection of the air valve actuator (2) wiring terminal and the single-link double-control switch rocker switch (6) contact point achieves the time sequence interlocking control requirement of the air valve actuator (2) and the second exhaust fan (5).

6. The automatic control device of the electrically operated air valve of the mechanical exhaust system of the sewage treatment room according to claim 5, characterized in that: The exhaust fan control box (4) is electrically connected with the 70 DEG C fireproof valve (15), and the 70 DEG C fireproof valve (15) is assembled between the air valve actuator (2) and the second exhaust fan (5).

7. The automatic control device of the electrically operated air valve of the mechanical exhaust system of the sewage treatment room according to claim 5, characterized in that: The single-link double-control switch rocker switch (6) is connected with the air valve actuator motor (14) for driving the opening or closing of the air inlet valve (1) and the air valve actuator (2).

8. The automatic control device of the electrically operated air valve of the mechanical exhaust system of the sewage treatment room according to claim 1, characterized in that: The first exhaust fan (3) is a three-phase asynchronous squirrel cage motor.

9. The automatic control device of the electrically operated air valve of the mechanical exhaust air system of a sewage treatment room according to claim 1, characterized in that: The second exhaust fan (5) is a single-phase asynchronous squirrel cage motor.

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