CN107339706A - It is a kind of can autonomous control monomer combustion experiment auxiliary fume extractor - Google Patents

Abstract

The present invention relates to the monomer combustion Test And Check Technology field of construction material or product, particularly disclose it is a kind of can autonomous control monomer combustion experiment auxiliary fume extractor.This can autonomous control monomer combustion experiment auxiliary fume extractor, include the combustion chamber that top export sets gas skirt, gas skirt top is provided with collector and by smoke discharging pipe connecting fan, it is characterised in that：The overthe openings of the combustion chamber are provided with auxiliary gas skirt, auxiliary gas skirt top is connected with auxiliary smoke discharging pipe, auxiliary smoke discharging pipe end connection smoke discharging pipe is simultaneously provided with electric controller in both communicating positions, and electric controller and blower fan are all connected with PLC control system.The present invention is simple in construction, using flexible, not only solves in existing experimental rig caused by remaining dropping burning the problem of harmful smoke hazard test personnel's health, and improve the accuracy of inspection data.

Description

A self-controllable auxiliary smoke exhaust device for single combustion test

(1) Technical field

The invention relates to the technical field of single combustion test detection of building materials or products, in particular to an autonomously controllable auxiliary smoke exhaust device for single combustion test.

(2) Background technology

With the implementation of GB 8624-2006 "Classification of Combustion Behavior of Building Materials and Products", single combustion test is widely used as an important test item. The currently used unit combustion test device only has a smoke exhaust pipe and a gas collection hood above the combustion chamber, without considering the harmful gas generated by the burning of residual drippings on the trolley after the end of the test, and the harmful gases generated by the burning of drippings. Harmful smoke seriously endangers the health of test personnel and affects the oxygen content in the air, thereby affecting the accuracy of test results.

(3) Contents of the invention

In order to make up for the deficiencies of the prior art, the present invention provides an autonomously controllable auxiliary smoke exhaust device for monomer combustion tests with simple structure, convenient operation and accurate detection data.

The present invention is achieved through the following technical solutions:

A self-controllable auxiliary smoke exhaust device for single combustion test, comprising a combustion chamber with a gas collection hood at the top outlet, a collector is installed on the top of the gas collection hood and connected to a fan through a smoke exhaust pipe, and it is characterized in that: the combustion chamber An auxiliary gas collecting hood is installed above the opening of the auxiliary gas collecting hood. The top of the auxiliary gas collecting hood is connected with an auxiliary smoke exhaust pipe. Connect to PLC control system.

In the present invention, on the premise that the original combustion chamber is provided with a gas collection hood, a collector and a smoke exhaust pipe, an auxiliary gas collection hood, an auxiliary smoke exhaust pipe, an electric control panel, an auxiliary smoke exhaust pipe and a smoke exhaust pipe are set on the combustion chamber. The shared fan can be connected with the PLC control system to realize the automation of control.

A better solution of the present invention is:

The electric control device includes a fan-shaped baffle installed at the communication port between the auxiliary smoke exhaust pipe and the smoke exhaust pipe through a fixed bracket. The upper part of the baffle is provided with a connecting bracket, and the connecting bracket is connected to the motor through a connecting bolt. The motor is provided with a positioning Use the upper limit and the lower limit; use the motor as the power source, adjust the position of the baffle through the connecting bolt and the connecting bracket, close or open the auxiliary smoke exhaust pipe, and the position of the baffle is controlled by the upper limit and the lower limit.

Both the smoke exhaust pipe and the auxiliary gas collecting hood are connected and fixed above the combustion chamber through brackets, and the auxiliary smoke exhaust pipe is located below the smoke exhaust pipe in distribution and connected to it; the bracket is made of stainless steel or PPS engineering plastic material, realizing It has high temperature resistance and corrosion resistance.

The invention is simple in structure and flexible in application, which not only solves the problem that the harmful smoke generated by the combustion of residual drippings in the existing test device endangers the health of the test personnel, but also improves the accuracy of the test data. At the same time, the auxiliary smoke exhaust device and The main smoke exhaust device shares a fan, which better realizes the optimal utilization of resources, can be automatically controlled, and improves the detection quality and work efficiency.

(4) Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is the top view structure schematic diagram of the present invention;

FIG. 3 is a partially enlarged view of position A shown in FIG. 1 .

In the figure, 1 combustion chamber, 2 collector, 3 gas collecting hood, 4 smoke exhaust pipe, 5 bracket, 6 auxiliary gas collecting hood, 7 auxiliary smoke exhaust pipe, 8 fan, 9 baffle, 10 motor, 11 upper limit, 12 lower limit positions, 13 connecting bolts, 14 connecting brackets, and 15 fixed brackets.

(5) Specific implementation methods

Accompanying drawing is a kind of specific embodiment of the present invention. This embodiment includes a combustion chamber 1 with a gas collection hood 3 installed at the top outlet, a collector 2 is installed on the top of the gas collection hood 3 and connected to a fan 8 through a smoke exhaust pipe 4, and an auxiliary gas collection hood is installed above the opening of the combustion chamber 1 6. The top of the auxiliary gas collecting hood 6 is connected to the auxiliary smoke exhaust pipe 7, the end of the auxiliary smoke exhaust pipe 7 is connected to the smoke exhaust pipe 4, and an electric control device is installed at the connecting position of the two. The electric control device and the fan 8 are connected to the PLC control system; the electric control device includes a fan-shaped baffle plate 9 installed at the communication port between the auxiliary smoke exhaust pipe 7 and the smoke exhaust pipe 4 through a fixed bracket 15, and a connecting bracket 14 is arranged on the upper part of the baffle plate 9, and the connecting bracket 14 is connected by connecting The bolt 13 communicates with the motor 10, and the motor 10 is provided with an upper limit 11 and a lower limit 12 for positioning; the exhaust pipe 4 and the auxiliary gas collection hood 6 are connected and fixed on the combustion chamber 1 by a support 5; the support 5 is Stainless steel material or PPS engineering plastic material.

After the test was completed, use the motor 10 to adjust the position of the baffle plate 9 by connecting the bolt 13 and the connecting bracket 14, open the auxiliary smoke exhaust pipe 7, and use the blower fan 8 to extract the flue gas in the auxiliary gas collecting hood 6; 10. Adjust the position of the baffle 9 through the connecting bolt 13 and the connecting bracket 14, and close the auxiliary smoke exhaust pipe 7; the position of the baffle 9 is controlled by the upper limit 11 and the lower limit 12.

Wherein, the fan 8 and the motor 10 are connected with a computer and controlled by a PCL control system to realize control automation.

The present invention effectively not only solves the problem that the harmful smoke generated by the combustion of residual drippings in the existing test device endangers the health of the test personnel, but also improves the accuracy of the test data. At the same time, the auxiliary smoke exhaust device is shared with the main smoke exhaust device. A fan can better realize the optimal utilization of resources. The device can be automatically controlled to improve detection quality and work efficiency.

Claims (4)

1. A self-controllable auxiliary smoke exhaust device for single combustion test, including a combustion chamber (1) with a gas collection hood (3) at the top outlet, a collector (2) installed on the top of the gas collection hood (3) and passing through The smoke exhaust pipe (4) is connected to the fan (8), and it is characterized in that: an auxiliary gas collection hood (6) is installed above the opening of the combustion chamber (1), and an auxiliary smoke exhaust pipe is connected to the top of the auxiliary gas collection hood (6) (7), the end of the auxiliary smoke exhaust pipe (7) is connected to the smoke exhaust pipe (4), and an electric control device is arranged at the connecting position of the two, and the electric control device and the fan (8) are connected to the PLC control system. 2. The self-controllable auxiliary smoke exhaust device for single combustion test according to claim 1, characterized in that: the electric control device includes a fixed bracket (15) installed on the auxiliary smoke exhaust pipe (7) and smoke exhaust The fan-shaped baffle (9) at the communication port of the pipe (4), the upper part of the baffle (9) is provided with a connecting bracket (14), and the connecting bracket (14) is connected to the motor (10) through the connecting bolt (13), and the motor ( 10) There are upper limit (11) and lower limit (12) for positioning on the top. 3. The self-controllable auxiliary smoke exhaust device for single combustion test according to claim 1, characterized in that: the smoke exhaust pipe (4) and the auxiliary gas collecting hood (6) are connected and fixed by brackets (5) above the combustion chamber (1). 4. The self-controllable auxiliary smoke exhaust device for single combustion test according to claim 3, characterized in that: the bracket (5) is made of stainless steel or PPS engineering plastic.