CN115493225A

CN115493225A - Valve actuating mechanism for fire-fighting smoke prevention and exhaust system

Info

Publication number: CN115493225A
Application number: CN202211320079.7A
Authority: CN
Inventors: 罗云; 张圣建; 王涛; 李金金
Original assignee: Wuhan Hengying Pump Industry Co ltd
Current assignee: Wuhan Hengying Pump Industry Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2022-12-20

Abstract

The invention discloses a valve actuating mechanism for a fire-fighting smoke-discharging prevention system, which comprises a shell, and a wiring terminal, an electric push rod, a transmission assembly, a first superposition limit switch, a second superposition limit switch, a manual switch and an Internet of things master control module which are arranged in the shell, wherein the first superposition limit switch and the second superposition limit switch are oppositely arranged, a valve rod is perpendicular to the shell, is arranged between the first superposition limit switch and the second superposition limit switch and is connected with the transmission assembly, the transmission assembly is driven by the electric push rod, the transmission assembly drives the valve rod to rotate and triggers the first superposition limit switch or the second superposition limit switch, the manual switch is used for manually controlling the action of the electric push rod, and the Internet of things master control module is used for receiving and uploading signals and issuing action instructions. The valve actuating mechanism has various control methods, can deal with various different working conditions and emergency situations, can remotely switch the valve on and off, inquire the state of the valve and the daily inspection situation on the mobile terminal, and timely finds and relieves faults.

Description

Valve actuating mechanism for fire-fighting smoke prevention and exhaust system

Technical Field

The invention relates to the technical field of control valves of fire-fighting machinery smoke prevention and exhaust systems, in particular to a valve actuating mechanism for a fire-fighting smoke prevention and exhaust system.

Background

The actuating mechanism is a component of valves such as a fire damper, a smoke exhaust valve, an air supply valve, an air supplement valve and the like in a smoke prevention and exhaust system of the fire-fighting machinery, and the actuating mechanism and the valves are installed in an air shaft pipeline and a suspended ceiling together, and the positions are hidden and dispersed. The manual reset is needed for the routing inspection of various valves, the routing inspection is time-consuming and labor-consuming, the speciality is strong, the management cost is high, and the comprehensive routing inspection is often ignored. Has the defects of difficult maintenance, difficult inspection and difficult reset. Because the complexity of the installation position of the valve is concealed, the hidden trouble of the fault can not be found in time, the prior art is inconvenient for maintaining and managing the valve, the user often ignores the inspection due to various reasons, the various smoke-proof smoke exhaust valves lack of maintenance and are easy to cause rust blockage, poor performance or malfunction and incapability of opening and closing, and the condition of the valve can not be mastered at ordinary times. When a fire disaster occurs, the valve is invalid or is not in a normal standby state, air can not be supplied to an escape channel, dense smoke and harmful gas can not be pumped and discharged in time, and a smoke prevention and discharge system of fire-fighting machinery can not play the function, so that escape and rescue in a fire scene are influenced. Delay the escape and rescue time in the fire scene and enlarge the accident range.

Disclosure of Invention

Aiming at the technical problem, the invention provides a valve actuating mechanism for a fire control system, which integrates four execution modes of remote control, temperature control, manual control and remote control into a whole and can deal with various different working conditions and emergency situations; through setting up intelligent control terminal, can long-rangely switch the valve on mobile terminal, inquire the state and the daily condition of patrolling and examining of valve, in time discover the trouble and remove. During emergency, the valve is manually started, and the related fans are linked in time, so that the emergency escape device plays an important role in escaping.

The utility model provides a valve actuating mechanism for fire control smoke protection and exhaust system, includes the casing and locates binding post, electric putter, drive assembly, stack limit switch one, stack limit switch two, manual switch, thing networking host system in the casing, stack limit switch one and two relative settings of stack limit switch, valve rod perpendicular to casing are located stack limit switch one and are connected with drive assembly between the stack limit switch two, drive assembly passes through the electric putter drive, and drive assembly drives the valve rod and rotates and trigger stack limit switch one or stack limit switch two, manual switch is used for the action of manual control electric putter, thing networking host system is used for receiving and uploading the signal and assigns the action instruction.

Preferably, the transmission assembly comprises a linear guide rail, a sliding block, a rack, a gear, a first stop pin and a second stop pin, the rack is fixedly connected with the linear guide rail, the linear guide rail is connected with the shaft end of an electric push rod, the electric push rod drives the linear guide rail to slide along the sliding block, the gear is meshed with the rack, the first stop pin and the second stop pin are vertically fixed on the rack, a valve rod is coaxially and fixedly connected with the gear, the manual switch is fixed on a shell or a remote manual control box and comprises a start-stop button and a reset button, and an abnormal indicator lamp is further arranged between the start-stop button and the reset button.

Preferably, the transmission assembly adopts a rocker arm, one end of the rocker arm is hinged to an output shaft of the electric push rod, the other end of the rocker arm is coaxially and fixedly connected with the valve rod, the manual switch is fixed on the shell or a remote manual control box and comprises a start-stop button and a reset button, and an abnormal indicator lamp is further arranged between the start-stop button and the reset button.

As above-mentioned technical scheme's preferred, still include control by temperature change trigger assembly, control by temperature change trigger assembly includes temperature sensor, temperature sensor stretches out in the casing, and after temperature sensor reached the settlement temperature, the direct drive instruction that converts electric putter into of thing networking host system of temperature sensor signal.

Preferably, the temperature control trigger assembly further comprises a micro switch and an umbrella-shaped trigger block installed at the tail end of the temperature sensor, and after the temperature sensor reaches a set temperature, the umbrella-shaped trigger block moves to trigger the micro switch.

The invention has the beneficial effects that:

the valve actuating mechanism integrates four actuating modes of remote, temperature, manual or remote manual control, can deal with various different working conditions and emergency situations, can remotely switch the valve on and off, inquire the state of the valve and daily patrol and examine conditions on the mobile terminal by arranging the intelligent control terminal, and can timely find and remove faults.

Drawings

Fig. 1 is a schematic view of an internal structure of the first embodiment.

Fig. 2 is a top view of the first embodiment.

Fig. 3 is a schematic view of the internal structure of the second embodiment.

Fig. 4 is a schematic internal structure diagram of the fourth embodiment.

FIG. 5 is a top view of the fourth embodiment.

Fig. 6 is a schematic internal structure diagram of the fifth embodiment.

Fig. 7 is a schematic view showing a structure in which a manual switch and an abnormality indicator lamp are installed in a remote manual control box.

The reference numbers are as follows: the intelligent control system comprises a shell 1, a wiring terminal 2, an electric push rod 3, a first superposition limit switch 4, a second superposition limit switch 5, a main control module of the Internet of things 6, a linear guide rail 7, a slider 8, a rack 9, a gear 10, a first stop pin 11, a second stop pin 12, a start-stop button 13, a reset button 14, an abnormal indicator 15, a rocker 16, a temperature sensor 17, a microswitch 18, a trigger block 19 and a valve rod 20.

Detailed Description

The technical scheme of the invention is clearly and completely described below by combining the attached drawings of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Example one

As shown in fig. 1, 2, a valve actuating mechanism for fire control smoke prevention and exhaust system, binding post 2, electric putter 3, drive assembly, stack limit switch 4, stack limit switch two 5, manual switch, thing networking host system 6 in including casing 1 and locating casing 1, stack limit switch 4 and stack limit switch two 5 set up relatively, and valve rod 20 perpendicular to casing 1 locates between stack limit switch 4 and the stack limit switch two 5 and is connected with drive assembly, drive assembly passes through the drive of electric putter 3, and drive assembly drives valve rod 20 and rotates and trigger stack limit switch 4 or stack limit switch two 5, manual switch is used for the 3 actions of manual control thing networking, host system 6 is used for receiving and uploading signal and issue the action instruction.

In this embodiment, the transmission assembly includes a linear guide 7, a slider 8, a rack 9, a gear 10, a first stopper pin 11, and a second stopper pin 12, the rack 9 is fixedly connected to the linear guide 7, the linear guide 7 is connected to a shaft end of the electric push rod 3, the electric push rod 3 drives the linear guide 7 to slide along the slider 8, the gear 10 is engaged with the rack 9, the first stopper pin 11 and the second stopper pin 12 are vertically fixed to the rack 9, the valve rod 20 is coaxially and fixedly connected to the gear 10, the manual switch is fixed to the housing 1 or a remote manual control box, and includes a start-stop button 13 and a reset button 14, and an abnormal indicator light 15 is further disposed between the start-stop button 13 and the reset button 14.

The start-stop button 13, the reset button 14 and the abnormality indicator lamp 15 shown in the first embodiment are mounted on the housing 1, and the above buttons may be mounted on a remote control box, as shown in fig. 7, which is generally mounted on a wall near the valve actuator.

The action principle of the actuating mechanism is as follows:

under the initial state, stop pin 11 and stack limit switch 4 contact, when remote control closing signal transmits for electric putter 3 through thing networking host system 6, electric putter 3's output shaft promotes rack 9 and removes to stack limit switch two 5 one sides, gear 10 drives valve rod 20 synchronous revolution, wherein valve rod 20 is connected with the blade of valve, when stop pin two 12 and stack limit switch two 5 contact, electric putter 3 stops the action, accomplish closing of normally open valve or opening of normally closed valve promptly, and transmit position signal for cloud platform through thing networking host system 6, transmit for user terminal through the cloud platform.

When user terminal remote operation normally open valve or normally closed valve reset, the signal passes through thing networking host system 6 and transmits 3 pulling racks 9 of electric putter to stack limit switch 4 one side removal, and rack 9 drives the rotation of gear 10, and gear 10 drives valve rod 20 synchronous revolution, and when backing pin 11 and stack limit switch 4 contact, electric putter 3 stop the action, and valve rod 20 counter-rotation resets to normally open valve or normally closed valve. And the position signal is transmitted to the internet of things cloud platform through the internet of things main control module 6 and transmitted to the user terminal through the internet of things cloud platform.

When the actuating mechanism is powered on or powered off, a start-stop button 13 on the shell 1 or a remote manual control box is manually operated to prompt a normally-open valve to be closed or a normally-closed valve to be opened, and a reset button 14 is manually operated to reset the normally-open valve or the normally-closed valve. Wherein, the opening and closing of the abnormal indicator light 15 is used for displaying the abnormal opening and closing state of the valve.

Example two

As shown in fig. 3, the difference between the present embodiment and the first embodiment is that the transmission assembly employs a rocker arm 16, one end of the rocker arm 16 is hinged to the output shaft of the electric push rod 3, and the other end is coaxially and fixedly connected to the valve rod 20. The embodiment is suitable for large valve actuating mechanisms with high requirements on driving force. In this embodiment, the opening and closing of the valve is accomplished by rotation of the rocker arm 16.

EXAMPLE III

This embodiment has increased control by temperature change trigger assembly on the basis of embodiment one, control by temperature change trigger assembly includes temperature sensor 17, temperature sensor 17 stretches out in casing 1, and after temperature sensor 17 reached the settlement temperature, the direct drive instruction that converts electric putter 3 into through thing networking host system 6 of temperature sensor signal. This embodiment is not shown in the drawings.

Example four

As shown in fig. 4 and 5, in the present embodiment, a micro switch 18 and an umbrella-shaped trigger block 19 mounted at the end of a temperature sensor 17 are added to the third embodiment, and after the temperature sensor 17 reaches a set temperature, the umbrella-shaped trigger block 19 moves to trigger the micro switch 18.

When the ambient temperature reaches the set temperature, the metal at the lower part of the temperature sensor 17 is melted, the umbrella-shaped trigger block 19 at the upper part of the temperature sensor 17 is driven to move downwards, the microswitch 18 is touched, the microswitch 18 sends a signal to the electric push rod 3 through the internet of things main control module 6, the electric push rod 3 drives the rack 9 to move, the stop pin two 12 is in contact with the superposition limit switch two 5, the normally open valve is closed (the temperature control trigger component is generally installed on a valve actuating mechanism for controlling the normally open valve), the position signal is transmitted to the internet of things main control module 6 and is transmitted to a user terminal through the internet of things cloud platform, and the abnormal indicator lamp 15 on the actuating mechanism shell 1 or on the remote manual control box is turned on.

EXAMPLE five

As shown in fig. 6, in the present embodiment, a temperature control trigger component shown in the fourth embodiment is added to the second embodiment, and the action principle of the temperature control trigger component is the same as that described in the fourth embodiment.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a valve actuating mechanism for fire control prevents system of discharging fume which characterized in that: including casing and locate binding post, electric putter, drive assembly, stack limit switch one, stack limit switch two, hand switch, thing networking host system in the casing, stack limit switch one and stack limit switch two set up relatively, and valve rod perpendicular to casing is located between stack limit switch one and the stack limit switch two and is connected with the drive assembly, the drive assembly passes through the electric putter drive, and the drive assembly drives the valve rod and rotates and trigger stack limit switch one or stack limit switch two, hand switch is used for the action of manual control electric putter, thing networking host system is used for receiving and uploading the signal and issue the action instruction.

2. The valve actuator of claim 1, wherein: the transmission assembly comprises a linear guide rail, a sliding block, a rack, a gear, a first stop pin and a second stop pin, the rack is fixedly connected with the linear guide rail, the linear guide rail is connected with the shaft end of an electric push rod, the electric push rod drives the linear guide rail to slide along the sliding block, the gear is meshed with the rack, the first stop pin and the second stop pin are vertically fixed on the rack, a valve rod is fixedly connected with the gear in a coaxial mode, a manual switch is fixed on a shell or a remote manual control box and comprises a start-stop button and a reset button, and an abnormal indicator lamp is further arranged between the start-stop button and the reset button.

3. The valve actuator of claim 1, wherein: the transmission assembly adopts the rocking arm, the one end of rocking arm is articulated with electric putter's output shaft, and the other end and the coaxial fixed connection of valve rod, manual switch fixes on the casing or remote manual control box, including opening and stopping button and reset button, open and stop still to be equipped with the abnormal light between button and the reset button.

4. The valve actuator of claim 1, wherein: still trigger assembly including the control by temperature change, the control by temperature change trigger assembly includes temperature sensor, temperature sensor stretches out in the casing, and after temperature sensor reached the settlement temperature, the temperature sensor signal directly converted electric putter's drive instruction into through thing networking host system.

5. The valve actuator of claim 4, wherein: the temperature control trigger assembly further comprises a microswitch and an umbrella-shaped trigger block arranged at the tail end of the temperature sensor, and after the temperature sensor reaches a set temperature, the umbrella-shaped trigger block moves to trigger the microswitch.