Open fire detection equipment for flame detector

Abstract

The utility model provides open fire detection equipment for a flame detector, and belongs to the technical field of flame detector detection. According to the technical scheme, the device comprises an outer tank body, an inner tank body, an igniter and gas supply equipment; the inner tank body is arranged in the middle of the inner cavity of the outer tank body, the igniter is arranged on the lower side wall face of the inner cavity of the inner tank body, the upper end of the igniter is a fire spraying end, the fire spraying end is arranged in the middle of the inner cavity of the inner tank body and corresponds to the second outlet, a first communicating pipe is arranged at the rear end, away from the first outlet, of the outer tank body, and a first air pipe is arranged on the first communicating pipe and connected to air supply equipment. Compared with the prior art, the explosion-proof flame detector has the beneficial effects that the performance of the flame detector arranged in an explosion-proof area site can be detected by adopting real flames, and the real flames can be prevented from being in contact with air in the explosion-proof area, so that the possibility of explosion is avoided; the device is simple in structure and convenient to operate; and the performance detection effect of the flame detector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flame detector detection, in particular to an open flame detection device for a flame detector. Background Art

[0002] Open flames cannot appear in explosion-proof areas, so many flame detectors are installed in explosion-proof areas. However, if the flame detectors on site are improperly installed or have been used for a long time, the accuracy of the flame detector detection cannot be guaranteed. Therefore, a device for testing the working performance of the flame detector must be equipped.

[0003] Open flames cannot be used to test flame detectors in explosion-proof areas, otherwise explosions will occur. Therefore, electronic simulated flames are currently used to detect the working performance of flame detectors installed on-site in explosion-proof areas. However, electronic simulated flames generally use methods to simulate ultraviolet and infrared rays, and are limited by the current level of technology. Electronic light sources for ultraviolet and infrared rays cannot detect all ultraviolet and infrared spectra. Therefore, the detection sensitivity may be too high or too low, and the performance of the flame detector cannot be truly known, which poses a safety hazard. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide an open flame detection device for a flame detector which can prevent the outside air from contacting the real flame and can detect the performance of the flame detector with the real flame.

[0005] The utility model is achieved through the following measures:

[0006] An open flame detection device for a flame detector, characterized in that it comprises an outer tank body, an inner tank body, an igniter and an air supply device storing compressed air;

[0007] The inner tank body is arranged in the middle part of the inner cavity of the outer tank body. Specifically, a plurality of brackets are arranged on the outer side surface of the inner tank body, and the free ends of the brackets are arranged on the inner side wall of the outer tank body. Outlet 1 of the outer tank body is coaxial with outlet 2 of the inner tank body and outlet 1 and outlet 2 have the same orientation. The igniter is arranged on the lower side wall of the inner tank body inner cavity, and the upper end of the igniter is arranged as a flame-spraying end, and the flame-spraying end is located in the middle part of the inner tank body inner cavity and corresponds to outlet 2, that is, the center of the flame sprayed by the flame-spraying end, the center of outlet 1 and the center of outlet 2 are collinear and flush. A connecting pipe 1 is arranged at the rear end of the outer tank body away from outlet 1, and an air pipe 1 is arranged on the connecting pipe 1 to connect to an air supply device. The air supply device can be a high-pressure gas cylinder or a gas storage tank connected to an air pump. The air supply device fills high-pressure air into the outer tank body through air pipe 1 and connecting pipe 1, and then the high-pressure air flows out from outlet 1, so as to ensure that outside air does not enter the outer tank body.

[0008] The specific features of the utility model also include:

[0009] The outer tank body is a bottle-shaped structure as a whole, that is, the rear end of the outer tank body is cylindrical and the front end is conical, and the outlet 1 is arranged at the front end of the outer tank body, so that the inner cavity wall surface of the outer tank body can be a curved surface structure;

[0010] The inner tank body is a streamlined structure with both the front and rear ends being conical, and the second outlet is arranged at the front end of the inner tank body;

[0011] The air outlet end of the connecting tube 1 extending into the inner cavity of the outer tank body is aligned with the rear end of the inner tank body. Due to the curved surface structure design of the inner cavity wall of the outer tank body and the streamlined structure design of the inner tank body, when the air outlet of the connecting tube 1 is aligned with the rear end of the inner tank body to inflate the outer tank body, the occurrence of unstable airflow, such as eddy currents and turbulence, can be reduced to a certain extent, thereby reducing the disturbance effect on the igniter flame, such as accidental blowout, etc.

[0012] The device is also provided with an ignition mechanism cooperating with the igniter, and the ignition mechanism includes a driving mechanism and a linkage mechanism;

[0013] The driving mechanism comprises a sleeve arranged at the front end of the outlet 1, a plurality of slide grooves are arranged on the inner wall of the sleeve, a circular cover plate for closing the outlet 1 is slidably arranged in the sleeve, a plurality of slide plates cooperating with the slide grooves are arranged on the outer arc surface of the circular cover plate, the slide plates are slidably arranged in the corresponding slide grooves, a spring is arranged in each of the plurality of slide grooves, one end of the spring is arranged on the inner end surface of the slide groove, and the other end of the spring is arranged on the corresponding slide plate;

[0014] The linkage mechanism is connected to the inner side of the circular cover plate facing the inner cavity of the outer tank body, and the free end of the linkage mechanism is connected to the igniter. High-pressure air is filled into the outer tank body. When the pressure inside the outer tank body increases to a certain value, the airflow will push the circular cover plate to overcome the force of the spring and slide toward the front end, and at the same time drive the linkage mechanism to operate, thereby realizing ignition of the igniter.

[0015] The middle part of the circular cover plate is provided with a through air outlet, and a sealing cover that can be sealed is provided at the air outlet, a pair of bracket plates are provided on the outer side of the circular cover plate, and a transition plate is provided on one side of the sealing cover, and a circular shaft 1 is provided on both sides of the transition plate, and the free ends of the circular shaft 1 on both sides are rotatably arranged on the bracket plates on both sides, and a torsion spring is provided on the periphery of the circular shaft 1 on both sides, one end of the torsion spring is fixed on the bracket plate, and the other end of the torsion spring is fixed on the transition plate, and the action force of the torsion spring is greater than the action force of the spring, that is, after the circular cover plate is pushed to slide down to the limit position by the air flow pressure, the pressure in the outer tank body is further increased to push the sealing cover to overcome the action force of the torsion spring and rotate, and then the sealing cover is fully opened, and then the high-pressure air flows out through the air outlet. The setting of this structure can ensure that the outer tank body is filled with air of a certain pressure before the air outlet is opened, and the inflow of outside air after opening is prevented, thereby avoiding the occurrence of danger.

[0016] The linkage mechanism comprises a mounting plate arranged on the inner wall surface of the inner tank body, a fixing block 1, a fixing block 2 and a fixing block 3 are arranged on the side of the mounting plate, the fixing block 1 and the fixing block 2 are arranged on the upper side of the fixing block 3 and the two are flush, a U-shaped groove is arranged on the side of the fixing block 1 facing the fixing block 2, a rotating shaft is arranged on the U-shaped groove, a connecting plate 1 is arranged on the periphery of the rotating shaft, a circular shaft 2 is arranged on the side of the connecting plate 1 close to the free end, and connecting plates 2 and 3 are rotatably arranged on the periphery of the circular shaft 2;

[0017] The fixed block 2 is provided with a through hole 1 which passes through the left and right sides, and a round rod 1 is slidably arranged in the through hole 1. The fixed block 3 is provided with a through hole 2 which passes through the top and bottom sides, and a round rod 2 is slidably arranged in the through hole 2. The free end of the connecting plate 2 is hinged to one end of the round rod 1, and the other end of the round rod 1 is connected to the circular cover plate through a transition rod. The free end of the connecting plate 3 is hinged to the upper end of the round rod 2, and the lower end of the round rod 2 is provided with a Z-shaped auxiliary plate, and the free end of the Z-shaped auxiliary plate is provided with a cylindrical actuator rod;

[0018] The igniter is a piezoelectric lighter structure, and a gate-shaped bracket is provided on the igniter. A through hole three is provided on the upper side of the gate-shaped bracket, which is aligned with the push switch of the igniter. The actuator rod is slidably arranged in the through hole three, and a certain distance is arranged between the free end of the actuator rod and the push switch, so as to ensure that the push switch is pressed down to ignite when the circular cover plate slides to the limit position;

[0019] The working principle of the linkage mechanism is as follows: the circular cover plate slides outward, and drives the round rod one to slide in the direction away from the fixed block one through the transition rod, which will straighten the connecting plate one and the connecting plate two, and drive the connecting plate three to press downward, and drive the round rod two to slide downward, and drive the actuator rod to press downward, and vice versa. In addition, a limiting ring is provided on the periphery of the round rod two on the upper side of the fixed block three, and the limiting ring can ensure the effective operation of the linkage mechanism, and can also protect the igniter from being damaged by excessive action.

[0020] The device is also provided with a lifting mechanism, which includes a rectangular rod arranged on the outer side of the lower side of the outer tank body, a rectangular tube is provided on the outer sliding sleeve of the rectangular rod, and a handle is provided on the side of the rectangular tube close to the lower end;

[0021] A support plate 1 is provided on the side of the rectangular rod close to the outer tank body, a support plate 2 is provided at the lower end of the rectangular tube, a round tube is provided on the support plate 2, an inner rod is slidably provided in the round tube, the upper end of the inner rod is provided on the support plate 1, a connecting pipe 2 is provided on the side of the round tube close to the lower end, an air pipe 2 is provided on the connecting pipe 2 to connect to the air supply equipment, a valve switch is provided on the connecting pipe 2, and the valve switch is a prior art. The round tube is inflated by the valve switch, and the gas pushes the inner rod to slide upward, thereby driving the rectangular rod to slide upward, thereby facilitating the detection of flame detectors at a certain height.

[0022] A connecting pipe 3 is arranged at the rear end of the inner tank body, and an air pipe 3 is arranged after the connecting pipe 3 freely passes through the outer tank body and is connected to the smoke purifier.

[0023] The device is also provided with a central control valve, which includes a fixing member arranged on one side of the rectangular tube, and the fixing member is provided with a through hole four and a through hole five which are connected from top to bottom, the upper end of the through hole four is connected with the air pipe three, the lower end of the through hole four is connected with the smoke purifier through the air pipe four, the upper end of the through hole five is connected with the air pipe one, and the lower end of the through hole five is connected with the air supply device through the air pipe five. Specifically, the upper and lower ends of the through hole four and the through hole five are provided with pipeline transition joints, which are then connected with the corresponding air pipes through the pipeline transition joints;

[0024] The side of the fixing member is provided with a through hole six that passes through the through hole four and the through hole five, and a round rod three is rotatably arranged in the through hole six, and the rod body of the round rod three is provided with a through hole seven and a through hole eight that respectively cooperate with the through hole four and the through hole five, and the through hole seven and the through hole eight are perpendicular to each other. The free end of the round rod three is provided with a handle. By rotating the handle, when the through hole seven is connected with the through hole four, the through hole five and the through hole eight are disconnected. Similarly, when the through hole five and the through hole eight are connected, the through hole seven is disconnected from the through hole four.

[0025] The device is also provided with an observation mechanism, which includes a plane mirror 1 arranged on the inner wall of the inner tank body, the plane mirror 1 corresponds to the outlet 2 and forms an angle of 45° with the central axis of the outlet 2, and the corresponding lower side of the inner tank body and the lower side of the outer tank body are both made of transparent materials;

[0026] The rectangular rod is configured as a hollow tube that passes through from top to bottom and the rectangular rod corresponds to plane mirror 1 and forms an angle of 45°. Plane mirror 2 is provided near the lower end of the rectangular tube at an angle of 45°. An observation window begins on the side of the rectangular tube corresponding to plane mirror 2. Through the observation mechanism, the outlet 1 of the device can be manipulated to align with the flame detector for easy detection.

[0027] Working principle: when in use, first operate the outlet 1 of the device through the lifting mechanism and the observation mechanism to align it with the flame detector to be detected, then rotate the handle to connect the through hole 5 with the through hole 8, so that the gas supply device fills the outer tank with high-pressure air, and when the air pressure in the outer tank reaches a certain value, it will push the circular cover plate to overcome the force of the spring and slide to the front end, and at the same time drive the linkage mechanism to move, when the circular cover plate slides to the limit position, the linkage mechanism realizes the ignition of the igniter, at this time, the outlet 1 or the air outlet of the outer tank body is sealed by the circular cover plate and the sealing cover, so there will be no danger, when the air pressure in the outer tank body further increases, the sealing cover will be pushed open, and the air flow will flow out from the air outlet, because it is a high-pressure air flow, the outside air cannot enter the outer tank body, and there will be no danger, at this time, the open flame and the flame detector are unimpeded facing each other, that is, the detection of the flame detector by the real open flame is realized;

[0028] After the detection is completed, the handle is rotated to connect the through hole seven with the through hole four. At this time, the through hole five and the through hole eight are disconnected, and the high-pressure air in the outer tank body will flow into the smoke purifier outside along the corresponding pipeline. When the air pressure in the outer tank body is reduced, the sealing cover will close the air outlet under the action of the torsion spring. Since the air pressure in the outer tank body is always greater than the external air pressure during this process, the external air will not enter the outer tank body, so there is no danger. When the air pressure is further reduced, the circular cover plate is reset under the action of the spring, and then the push switch of the igniter is reset through the linkage mechanism. During this process, the flame can be blown out by the airflow flowing into the smoke purifier, or it can be extinguished after the push switch is reset. This process is completed without contact with the external air, so there is no danger.

[0029] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model can use real flames to detect the performance of flame detectors installed on site in explosion-proof areas, and can prevent real flames from contacting the air in the explosion-proof area to avoid the possibility of explosion; the device has a simple structure and is easy to operate; and the detection effect of the flame detector performance is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0031] Figure 2 It is a partial cross-sectional structural schematic diagram of an embodiment of the utility model.

[0032] Figure 3 It is a schematic structural diagram of the lower end portion of the lifting mechanism in an embodiment of the utility model.

[0033] Figure 4 It is a schematic diagram of the structure of the ignition mechanism in the embodiment of the utility model.

[0034] Figure 5 for Figure 4 A is an enlarged view of the middle image.

[0035] Figure 6 It is a schematic structural diagram of three related parts of the round rod in the embodiment of the utility model.

[0036] Among them, the figure markings are: 1, outer tank body; 2, connecting pipe one; 3, connecting pipe three; 4, rectangular rod; 5, rectangular tube; 6, fixing piece; 7, handle; 8, handle; 9, round tube; 10, inner rod; 11, inner tank body; 12, transition rod; 13, sleeve; 14, cover; 15, spring; 16, outlet two; 17, mounting plate; 18, igniter; 19, plane mirror one; 20, plane mirror two; 21, round rod one; 22, fixing block two; 23, connecting plate two; 24, connecting plate three; 25, connecting plate one; 26, fixing block one; 27, round rod two; 28, fixing block three; 29, actuator rod; 30, push switch; 31, Z-shaped auxiliary plate; 32, round cover plate; 33, torsion spring; 34, round rod three; 35, through hole eight; 36, through hole seven. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0038] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0040] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0041] Example 1

[0042] See also Figure 1 , an open flame detection device for a flame detector, comprising an outer tank body 1, an inner tank body 11, an igniter 18 and an air supply device storing compressed air;

[0043] The inner tank body 11 is arranged in the middle of the inner cavity of the outer tank body 1. Specifically, a plurality of brackets are arranged on the outer side surface of the inner tank body 11, and the free ends of the brackets are arranged on the inner wall surface of the outer tank body 1. The outlet 1 of the outer tank body 1 is coaxial with the outlet 2 16 of the inner tank body 11, and the outlet 1 and the outlet 2 16 have the same direction. The igniter 18 is arranged on the lower side wall surface of the inner cavity of the inner tank body 11, and the upper end of the igniter 18 is set as a flame spraying end, which is located in the middle of the inner cavity of the inner tank body 11 and corresponds to the outlet 2 16, that is, the flame spraying end The center of the flame ejected from the end, the center of outlet one and the center of outlet two 16 are all in a straight line. A connecting pipe 2 is provided at the rear end of the outer tank body 1 away from outlet one. An air pipe 1 is provided on the connecting pipe 2 to connect to the air supply equipment. The air supply equipment can be a high-pressure gas cylinder or a gas storage tank connected to an air pump. The air supply equipment fills high-pressure air into the outer tank body 1 through the air pipe 1 and the connecting pipe 1, and then the high-pressure air flows out from outlet one, thereby ensuring that outside air does not enter the outer tank body 1.

[0044] Example 2

[0045] See also Figure 1-5 , an open flame detection device for a flame detector, comprising an outer tank body 1, an inner tank body 11, an igniter 18 and an air supply device storing compressed air;

[0046] The inner tank body 11 is arranged in the middle of the inner cavity of the outer tank body 1. Specifically, a plurality of brackets are arranged on the outer side surface of the inner tank body 11, and the free ends of the brackets are arranged on the inner wall surface of the outer tank body 1. The outlet 1 of the outer tank body 1 is coaxial with the outlet 2 16 of the inner tank body 11, and the outlet 1 and the outlet 2 16 have the same direction. The igniter 18 is arranged on the lower side wall surface of the inner cavity of the inner tank body 11, and the upper end of the igniter 18 is set as a flame spraying end, which is located in the middle of the inner cavity of the inner tank body 11 and corresponds to the outlet 2 16, that is, the flame spraying end The center of the flame ejected from the end, the center of outlet one and the center of outlet two 16 are all in a straight line. A connecting pipe 2 is provided at the rear end of the outer tank body 1 away from outlet one. An air pipe 1 is provided on the connecting pipe 2 to connect to the air supply equipment. The air supply equipment can be a high-pressure gas cylinder or a gas storage tank connected to an air pump. The air supply equipment fills high-pressure air into the outer tank body 1 through the air pipe 1 and the connecting pipe 1, and then the high-pressure air flows out from outlet one, thereby ensuring that outside air does not enter the outer tank body 1.

[0047] The outer tank body 1 is a bottle-shaped structure as a whole, that is, the rear end of the outer tank body 1 is cylindrical, the front end is conical, and the outlet 1 is arranged at the front end of the outer tank body 1, so that the inner wall surface of the outer tank body 1 can be a curved surface structure;

[0048] The inner tank body 11 is a streamlined structure with both the front and rear ends being set in a conical shape, and the second outlet 16 is set at the front end of the inner tank body 11;

[0049] The air outlet end of the connecting tube 2 extends into the inner cavity of the outer tank body 1 and is aligned with the rear end of the inner tank body 11. Due to the curved surface structure design of the inner cavity wall of the outer tank body 1 and the streamlined structure design of the inner tank body 11, when the air outlet of the connecting tube 2 is aligned with the rear end of the inner tank body 11 to inflate the outer tank body 1, it can reduce the occurrence of unstable airflow, such as eddy currents and turbulence, to a certain extent, thereby reducing the disturbance effect on the flame of the igniter 18, such as accidental blowout, to a certain extent.

[0050] The device is also provided with an ignition mechanism cooperating with the igniter 18, and the ignition mechanism includes a driving mechanism and a linkage mechanism;

[0051] The driving mechanism includes a sleeve 13 arranged at the front end of the outlet 1, a plurality of slide grooves are arranged on the inner wall of the sleeve 13, a circular cover plate 32 for closing the outlet 1 is slidably arranged in the sleeve 13, a plurality of slide plates cooperating with the slide grooves are arranged on the outer arc surface of the circular cover plate 32, the slide plates are slidably arranged in the corresponding slide grooves, a spring 15 is arranged in each of the plurality of slide grooves, one end of the spring 15 is arranged on the end surface inside the slide groove, and the other end of the spring 15 is arranged on the corresponding slide plate;

[0052] A linkage mechanism is connected to the inner side of the circular cover plate 32 facing the inner cavity of the outer tank body 1, and the free end of the linkage mechanism is connected to the igniter 18. High-pressure air is filled into the outer tank body 1. When the pressure in the outer tank body 1 increases to a certain value, the airflow will push the circular cover plate 32 to overcome the force of the spring 15 and slide toward the front end, and at the same time drive the linkage mechanism to operate, thereby realizing the ignition of the igniter 18.

[0053] A through air outlet is provided in the middle of the circular cover plate 32, and a sealing cover 14 that can be sealed is provided at the air outlet. A pair of bracket plates are provided on the outer side of the circular cover plate 32, and a transition plate is provided on one side of the sealing cover 14. A circular shaft 1 is provided on both sides of the transition plate, and the free ends of the circular shaft 1 on both sides are rotatably provided on the bracket plates on both sides, and a torsion spring 33 is provided on the periphery of the circular shaft 1 on both sides, one end of the torsion spring 33 is fixed on the bracket plate, and the other end of the torsion spring 33 is fixed on the transition plate. The action force of the torsion spring 33 is greater than the action force of the spring 15, that is, after the circular cover plate 32 is pushed to slide to the limit position by the air flow pressure, the pressure in the outer tank body 1 is further increased to push the sealing cover 14 to overcome the action force of the torsion spring 33 and rotate, thereby completely opening the sealing cover 14, and then the high-pressure air flows out through the air outlet. The setting of this structure can ensure that the outer tank body 1 is filled with air with a certain pressure before the air outlet is opened, and the inflow of external air after opening is prevented to avoid the occurrence of danger.

[0054] The linkage mechanism includes a mounting plate 17 arranged on the inner wall of the inner tank body 11, a fixing block 1 26, a fixing block 22 and a fixing block 3 28 are arranged on the side of the mounting plate 17, the fixing block 1 26 and the fixing block 2 22 are arranged on the upper side of the fixing block 3 28 and the two are flush, a U-shaped groove is arranged on the side of the fixing block 1 26 facing the fixing block 2 22, a rotating shaft is arranged in the U-shaped groove, a connecting plate 1 25 is arranged on the periphery of the rotating shaft, a circular shaft 2 is arranged on the side of the connecting plate 1 25 near the free end, and a connecting plate 2 23 and a connecting plate 3 24 are rotatably arranged on the periphery of the circular shaft 2;

[0055] The fixed block 22 is provided with a through hole 1 which passes through the left and right sides, and a round rod 21 is slidably arranged in the through hole 1. The fixed block 3 28 is provided with a through hole 2 which passes through the top and bottom sides, and a round rod 27 is slidably arranged in the through hole 2. The free end of the connecting plate 23 is hinged to one end of the round rod 1 21, and the other end of the round rod 1 21 is connected to the round cover plate 32 through the transition rod 12. The free end of the connecting plate 3 24 is hinged to the upper end of the round rod 27, and a Z-shaped auxiliary plate 31 is provided at the lower end of the round rod 27, and a cylindrical actuator rod 29 is provided at the free end of the Z-shaped auxiliary plate 31.

[0056] The igniter 18 is a piezoelectric lighter structure. A gate-shaped bracket is provided on the igniter 18. A through hole 3 aligned with the push switch 30 of the igniter 18 is provided on the upper side of the gate-shaped bracket. The actuator rod 29 is slidably arranged in the through hole 3. A certain distance is arranged between the free end of the actuator rod 29 and the push switch 30 to ensure that the push switch 30 is pressed down to ignite when the round cover plate 32 slides to the limit position.

[0057] The working principle of the linkage mechanism is as follows: the circular cover plate 32 slides outward, and drives the round rod 1 21 to slide away from the fixed block 1 26 through the transition rod 12, which will straighten the connecting plate 1 25 and the connecting plate 2 23, and then drive the connecting plate 3 24 to press downward, and then drive the round rod 2 27 to slide downward, and then drive the actuator rod 29 to press downward, and vice versa. In addition, a limit ring is provided on the periphery of the round rod 27 on the upper side of the fixed block 3 28. The limit ring can ensure the effective operation of the linkage mechanism, and can also protect the igniter 18 from being damaged by excessive action.

[0058] Example 3

[0059] See also Figure 1-5 , an open flame detection device for a flame detector, comprising an outer tank body 1, an inner tank body 11, an igniter 18 and an air supply device storing compressed air;

[0060] The inner tank body 11 is arranged in the middle of the inner cavity of the outer tank body 1. Specifically, a plurality of brackets are arranged on the outer side surface of the inner tank body 11, and the free ends of the brackets are arranged on the inner wall surface of the outer tank body 1. The outlet 1 of the outer tank body 1 is coaxial with the outlet 2 16 of the inner tank body 11, and the outlet 1 and the outlet 2 16 have the same direction. The igniter 18 is arranged on the lower side wall surface of the inner cavity of the inner tank body 11, and the upper end of the igniter 18 is set as a flame spraying end, which is located in the middle of the inner cavity of the inner tank body 11 and corresponds to the outlet 2 16, that is, the flame spraying end The center of the flame ejected from the end, the center of outlet one and the center of outlet two 16 are all in a straight line. A connecting pipe 2 is provided at the rear end of the outer tank body 1 away from outlet one. An air pipe 1 is provided on the connecting pipe 2 to connect to the air supply equipment. The air supply equipment can be a high-pressure gas cylinder or a gas storage tank connected to an air pump. The air supply equipment fills high-pressure air into the outer tank body 1 through the air pipe 1 and the connecting pipe 1, and then the high-pressure air flows out from outlet one, thereby ensuring that outside air does not enter the outer tank body 1.

[0061] The outer tank body 1 is a bottle-shaped structure as a whole, that is, the rear end of the outer tank body 1 is cylindrical, the front end is conical, and the outlet 1 is arranged at the front end of the outer tank body 1, so that the inner wall surface of the outer tank body 1 can be a curved surface structure;

[0062] The inner tank body 11 is a streamlined structure with both the front and rear ends being set in a conical shape, and the second outlet 16 is set at the front end of the inner tank body 11;

[0063] The air outlet end of the connecting tube 2 extends into the inner cavity of the outer tank body 1 and is aligned with the rear end of the inner tank body 11. Due to the curved surface structure design of the inner cavity wall of the outer tank body 1 and the streamlined structure design of the inner tank body 11, when the air outlet of the connecting tube 2 is aligned with the rear end of the inner tank body 11 to inflate the outer tank body 1, it can reduce the occurrence of unstable airflow, such as eddy currents and turbulence, to a certain extent, thereby reducing the disturbance effect on the flame of the igniter 18, such as accidental blowout, to a certain extent.

[0064] The device is also provided with an ignition mechanism cooperating with the igniter 18, and the ignition mechanism includes a driving mechanism and a linkage mechanism;

[0065] The driving mechanism includes a sleeve 13 arranged at the front end of the outlet 1, a plurality of slide grooves are arranged on the inner wall of the sleeve 13, a circular cover plate 32 for closing the outlet 1 is slidably arranged in the sleeve 13, a plurality of slide plates cooperating with the slide grooves are arranged on the outer arc surface of the circular cover plate 32, the slide plates are slidably arranged in the corresponding slide grooves, a spring 15 is arranged in each of the plurality of slide grooves, one end of the spring 15 is arranged on the end surface inside the slide groove, and the other end of the spring 15 is arranged on the corresponding slide plate;

[0066] A linkage mechanism is connected to the inner side of the circular cover plate 32 facing the inner cavity of the outer tank body 1, and the free end of the linkage mechanism is connected to the igniter 18. High-pressure air is filled into the outer tank body 1. When the pressure in the outer tank body 1 increases to a certain value, the airflow will push the circular cover plate 32 to overcome the force of the spring 15 and slide toward the front end, and at the same time drive the linkage mechanism to operate, thereby realizing the ignition of the igniter 18.

[0067] A through air outlet is provided in the middle of the circular cover plate 32, and a sealing cover 14 that can be sealed is provided at the air outlet. A pair of bracket plates are provided on the outer side of the circular cover plate 32, and a transition plate is provided on one side of the sealing cover 14. A circular shaft 1 is provided on both sides of the transition plate, and the free ends of the circular shaft 1 on both sides are rotatably provided on the bracket plates on both sides, and a torsion spring 33 is provided on the periphery of the circular shaft 1 on both sides, one end of the torsion spring 33 is fixed on the bracket plate, and the other end of the torsion spring 33 is fixed on the transition plate. The action force of the torsion spring 33 is greater than the action force of the spring 15, that is, after the circular cover plate 32 is pushed to slide to the limit position by the air flow pressure, the pressure in the outer tank body 1 is further increased to push the sealing cover 14 to overcome the action force of the torsion spring 33 and rotate, thereby completely opening the sealing cover 14, and then the high-pressure air flows out through the air outlet. The setting of this structure can ensure that the outer tank body 1 is filled with air with a certain pressure before the air outlet is opened, and the inflow of external air after opening is prevented to avoid the occurrence of danger.

[0068] The linkage mechanism includes a mounting plate 17 arranged on the inner wall of the inner tank body 11, a fixing block 1 26, a fixing block 22 and a fixing block 3 28 are arranged on the side of the mounting plate 17, the fixing block 1 26 and the fixing block 2 22 are arranged on the upper side of the fixing block 3 28 and the two are flush, a U-shaped groove is arranged on the side of the fixing block 1 26 facing the fixing block 2 22, a rotating shaft is arranged in the U-shaped groove, a connecting plate 1 25 is arranged on the periphery of the rotating shaft, a circular shaft 2 is arranged on the side of the connecting plate 1 25 near the free end, and a connecting plate 2 23 and a connecting plate 3 24 are rotatably arranged on the periphery of the circular shaft 2;

[0069] The fixed block 22 is provided with a through hole 1 which passes through the left and right sides, and a round rod 21 is slidably arranged in the through hole 1. The fixed block 3 28 is provided with a through hole 2 which passes through the top and bottom sides, and a round rod 27 is slidably arranged in the through hole 2. The free end of the connecting plate 23 is hinged to one end of the round rod 1 21, and the other end of the round rod 1 21 is connected to the round cover plate 32 through the transition rod 12. The free end of the connecting plate 3 24 is hinged to the upper end of the round rod 27, and a Z-shaped auxiliary plate 31 is provided at the lower end of the round rod 27, and a cylindrical actuator rod 29 is provided at the free end of the Z-shaped auxiliary plate 31.

[0070] The igniter 18 is a piezoelectric lighter structure. A gate-shaped bracket is provided on the igniter 18. A through hole 3 aligned with the push switch 30 of the igniter 18 is provided on the upper side of the gate-shaped bracket. The actuator rod 29 is slidably arranged in the through hole 3. A certain distance is arranged between the free end of the actuator rod 29 and the push switch 30 to ensure that the push switch 30 is pressed down to ignite when the round cover plate 32 slides to the limit position.

[0071] The working principle of the linkage mechanism is as follows: the circular cover plate 32 slides outward, and drives the round rod 1 21 to slide away from the fixed block 1 26 through the transition rod 12, which will straighten the connecting plate 1 25 and the connecting plate 2 23, and then drive the connecting plate 3 24 to press downward, and then drive the round rod 2 27 to slide downward, and then drive the actuator rod 29 to press downward, and vice versa. In addition, a limit ring is provided on the periphery of the round rod 27 on the upper side of the fixed block 3 28. The limit ring can ensure the effective operation of the linkage mechanism, and can also protect the igniter 18 from being damaged by excessive action.

[0072] The device is also provided with a lifting mechanism, which includes a rectangular rod 4 arranged on the outer side of the lower side of the outer tank body 1, a rectangular tube 5 is slidably sleeved on the outer periphery of the rectangular rod 4, and a handle 7 is arranged on the side of the rectangular tube 5 near the lower end;

[0073] A support plate 1 is provided on the side of the rectangular rod 4 close to the outer tank body 1, a support plate 2 is provided at the lower end of the rectangular tube 5, a round tube 9 is provided on the support plate 2, an inner rod 10 is slidably provided in the round tube 9, the upper end of the inner rod 10 is provided on the support plate 1, a connecting pipe 2 is provided on the side of the round tube 9 close to the lower end, a gas pipe 2 is provided on the connecting pipe 2 and connected to the gas supply equipment, a valve switch is provided on the connecting pipe 2, and the valve switch is a prior art. The round tube 9 is inflated through the valve switch, and the gas pushes the inner rod 10 to slide upward, thereby driving the rectangular rod 4 to slide upward, thereby facilitating the detection of flame detectors at a certain height.

[0074] A connecting pipe 3 3 is provided at the rear end of the inner tank body 11 , and an air pipe 3 is provided after the connecting pipe 3 3 freely passes through the outer tank body 1 to be connected to the fume purifier.

[0075] Example 4

[0076] See also Figure 1-6 , an open flame detection device for a flame detector, comprising an outer tank body 1, an inner tank body 11, an igniter 18 and an air supply device storing compressed air;

[0077] The inner tank body 11 is arranged in the middle of the inner cavity of the outer tank body 1. Specifically, a plurality of brackets are arranged on the outer side surface of the inner tank body 11, and the free ends of the brackets are arranged on the inner wall surface of the outer tank body 1. The outlet 1 of the outer tank body 1 is coaxial with the outlet 2 16 of the inner tank body 11, and the outlet 1 and the outlet 2 16 have the same direction. The igniter 18 is arranged on the lower side wall surface of the inner cavity of the inner tank body 11, and the upper end of the igniter 18 is set as a flame spraying end, which is located in the middle of the inner cavity of the inner tank body 11 and corresponds to the outlet 2 16, that is, the flame spraying end The center of the flame ejected from the end, the center of outlet one and the center of outlet two 16 are all in a straight line. A connecting pipe 2 is provided at the rear end of the outer tank body 1 away from outlet one. An air pipe 1 is provided on the connecting pipe 2 to connect to the air supply equipment. The air supply equipment can be a high-pressure gas cylinder or a gas storage tank connected to an air pump. The air supply equipment fills high-pressure air into the outer tank body 1 through the air pipe 1 and the connecting pipe 1, and then the high-pressure air flows out from outlet one, thereby ensuring that outside air does not enter the outer tank body 1.

[0078] The outer tank body 1 is a bottle-shaped structure as a whole, that is, the rear end of the outer tank body 1 is cylindrical, the front end is conical, and the outlet 1 is arranged at the front end of the outer tank body 1, so that the inner wall surface of the outer tank body 1 can be a curved surface structure;

[0079] The inner tank body 11 is a streamlined structure with both the front and rear ends being set in a conical shape, and the second outlet 16 is set at the front end of the inner tank body 11;

[0080] The air outlet end of the connecting tube 2 extends into the inner cavity of the outer tank body 1 and is aligned with the rear end of the inner tank body 11. Due to the curved surface structure design of the inner cavity wall of the outer tank body 1 and the streamlined structure design of the inner tank body 11, when the air outlet of the connecting tube 2 is aligned with the rear end of the inner tank body 11 to inflate the outer tank body 1, it can reduce the occurrence of unstable airflow, such as eddy currents and turbulence, to a certain extent, thereby reducing the disturbance effect on the flame of the igniter 18, such as accidental blowout, to a certain extent.

[0081] The device is also provided with an ignition mechanism cooperating with the igniter 18, and the ignition mechanism includes a driving mechanism and a linkage mechanism;

[0082] The driving mechanism includes a sleeve 13 arranged at the front end of the outlet 1, a plurality of slide grooves are arranged on the inner wall of the sleeve 13, a circular cover plate 32 for closing the outlet 1 is slidably arranged in the sleeve 13, a plurality of slide plates cooperating with the slide grooves are arranged on the outer arc surface of the circular cover plate 32, the slide plates are slidably arranged in the corresponding slide grooves, a spring 15 is arranged in each of the plurality of slide grooves, one end of the spring 15 is arranged on the end surface inside the slide groove, and the other end of the spring 15 is arranged on the corresponding slide plate;

[0083] A linkage mechanism is connected to the inner side of the circular cover plate 32 facing the inner cavity of the outer tank body 1, and the free end of the linkage mechanism is connected to the igniter 18. High-pressure air is filled into the outer tank body 1. When the pressure in the outer tank body 1 increases to a certain value, the airflow will push the circular cover plate 32 to overcome the force of the spring 15 and slide toward the front end, and at the same time drive the linkage mechanism to operate, thereby realizing the ignition of the igniter 18.

[0084] A through air outlet is provided in the middle of the circular cover plate 32, and a sealing cover 14 that can be sealed is provided at the air outlet. A pair of bracket plates are provided on the outer side of the circular cover plate 32, and a transition plate is provided on one side of the sealing cover 14. A circular shaft 1 is provided on both sides of the transition plate, and the free ends of the circular shaft 1 on both sides are rotatably provided on the bracket plates on both sides, and a torsion spring 33 is provided on the periphery of the circular shaft 1 on both sides, one end of the torsion spring 33 is fixed on the bracket plate, and the other end of the torsion spring 33 is fixed on the transition plate. The action force of the torsion spring 33 is greater than the action force of the spring 15, that is, after the circular cover plate 32 is pushed to slide to the limit position by the air flow pressure, the pressure in the outer tank body 1 is further increased to push the sealing cover 14 to overcome the action force of the torsion spring 33 and rotate, thereby completely opening the sealing cover 14, and then the high-pressure air flows out through the air outlet. The setting of this structure can ensure that the outer tank body 1 is filled with air with a certain pressure before the air outlet is opened, and the inflow of external air after opening is prevented to avoid the occurrence of danger.

[0085] The linkage mechanism includes a mounting plate 17 arranged on the inner wall of the inner tank body 11, a fixing block 1 26, a fixing block 22 and a fixing block 3 28 are arranged on the side of the mounting plate 17, the fixing block 1 26 and the fixing block 2 22 are arranged on the upper side of the fixing block 3 28 and the two are flush, a U-shaped groove is arranged on the side of the fixing block 1 26 facing the fixing block 2 22, a rotating shaft is arranged in the U-shaped groove, a connecting plate 1 25 is arranged on the periphery of the rotating shaft, a circular shaft 2 is arranged on the side of the connecting plate 1 25 near the free end, and a connecting plate 2 23 and a connecting plate 3 24 are rotatably arranged on the periphery of the circular shaft 2;

[0086] The fixed block 22 is provided with a through hole 1 which passes through the left and right sides, and a round rod 21 is slidably arranged in the through hole 1. The fixed block 3 28 is provided with a through hole 2 which passes through the top and bottom sides, and a round rod 27 is slidably arranged in the through hole 2. The free end of the connecting plate 23 is hinged to one end of the round rod 1 21, and the other end of the round rod 1 21 is connected to the round cover plate 32 through the transition rod 12. The free end of the connecting plate 3 24 is hinged to the upper end of the round rod 27, and a Z-shaped auxiliary plate 31 is provided at the lower end of the round rod 27, and a cylindrical actuator rod 29 is provided at the free end of the Z-shaped auxiliary plate 31.

[0087] The igniter 18 is a piezoelectric lighter structure. A gate-shaped bracket is provided on the igniter 18. A through hole 3 aligned with the push switch 30 of the igniter 18 is provided on the upper side of the gate-shaped bracket. The actuator rod 29 is slidably arranged in the through hole 3. A certain distance is arranged between the free end of the actuator rod 29 and the push switch 30 to ensure that the push switch 30 is pressed down to ignite when the round cover plate 32 slides to the limit position.

[0088] The working principle of the linkage mechanism is as follows: the circular cover plate 32 slides outward, and drives the round rod 1 21 to slide away from the fixed block 1 26 through the transition rod 12, which will straighten the connecting plate 1 25 and the connecting plate 2 23, and then drive the connecting plate 3 24 to press downward, and then drive the round rod 2 27 to slide downward, and then drive the actuator rod 29 to press downward, and vice versa. In addition, a limit ring is provided on the periphery of the round rod 27 on the upper side of the fixed block 3 28. The limit ring can ensure the effective operation of the linkage mechanism, and can also protect the igniter 18 from being damaged by excessive action.

[0089] The device is also provided with a lifting mechanism, which includes a rectangular rod 4 arranged on the outer side of the lower side of the outer tank body 1, a rectangular tube 5 is slidably sleeved on the outer periphery of the rectangular rod 4, and a handle 7 is arranged on the side of the rectangular tube 5 near the lower end;

[0090] A support plate 1 is provided on the side of the rectangular rod 4 close to the outer tank body 1, a support plate 2 is provided at the lower end of the rectangular tube 5, a round tube 9 is provided on the support plate 2, an inner rod 10 is slidably provided in the round tube 9, the upper end of the inner rod 10 is provided on the support plate 1, a connecting pipe 2 is provided on the side of the round tube 9 close to the lower end, a gas pipe 2 is provided on the connecting pipe 2 and connected to the gas supply equipment, a valve switch is provided on the connecting pipe 2, and the valve switch is a prior art. The round tube 9 is inflated through the valve switch, and the gas pushes the inner rod 10 to slide upward, thereby driving the rectangular rod 4 to slide upward, thereby facilitating the detection of flame detectors at a certain height.

[0091] A connecting pipe 3 3 is provided at the rear end of the inner tank body 11 , and an air pipe 3 is provided after the connecting pipe 3 3 freely passes through the outer tank body 1 to be connected to the fume purifier.

[0092] The device is also provided with a central control valve, which includes a fixing member 6 arranged on one side of the rectangular tube 5, and the fixing member 6 is provided with a through hole 4 and a through hole 5 which are connected from top to bottom. The upper end of the through hole 4 is connected with the air pipe 3, and the lower end of the through hole 4 is connected with the smoke purifier through the air pipe 4. The upper end of the through hole 5 is connected with the air pipe 1, and the lower end of the through hole 5 is connected with the air supply device through the air pipe 5. Specifically, the upper and lower ends of the through hole 4 and the through hole 5 are provided with pipeline transition joints, and then connected with the corresponding air pipes through the pipeline transition joints;

[0093] A through hole six penetrating through the through hole four and the through hole five is provided on the side of the fixing member 6, and a round rod three 34 is rotatably provided in the through hole six. A through hole seven 36 and a through hole eight 35 respectively cooperating with the through hole four and the through hole five are provided on the rod body of the round rod three 34, and the through hole seven 36 and the through hole eight 35 are perpendicular to each other. A handle 8 is provided at the free end of the round rod three 34. By rotating the handle 8, when the through hole seven 36 is connected with the through hole four, the through hole five and the through hole eight 35 are disconnected. Similarly, when the through hole five and the through hole eight 35 are connected, the through hole seven 36 and the through hole four are disconnected.

[0094] Example 5

[0095] See also Figure 1-6 , an open flame detection device for a flame detector, comprising an outer tank body 1, an inner tank body 11, an igniter 18 and an air supply device storing compressed air;

[0096] The inner tank body 11 is arranged in the middle of the inner cavity of the outer tank body 1. Specifically, a plurality of brackets are arranged on the outer side surface of the inner tank body 11, and the free ends of the brackets are arranged on the inner wall surface of the outer tank body 1. The outlet 1 of the outer tank body 1 is coaxial with the outlet 2 16 of the inner tank body 11, and the outlet 1 and the outlet 2 16 have the same direction. The igniter 18 is arranged on the lower side wall surface of the inner cavity of the inner tank body 11, and the upper end of the igniter 18 is set as a flame spraying end, which is located in the middle of the inner cavity of the inner tank body 11 and corresponds to the outlet 2 16, that is, the flame spraying end The center of the flame ejected from the end, the center of outlet one and the center of outlet two 16 are all in a straight line. A connecting pipe 2 is provided at the rear end of the outer tank body 1 away from outlet one. An air pipe 1 is provided on the connecting pipe 2 to connect to the air supply equipment. The air supply equipment can be a high-pressure gas cylinder or a gas storage tank connected to an air pump. The air supply equipment fills high-pressure air into the outer tank body 1 through the air pipe 1 and the connecting pipe 1, and then the high-pressure air flows out from outlet one, thereby ensuring that outside air does not enter the outer tank body 1.

[0097] The outer tank body 1 is a bottle-shaped structure as a whole, that is, the rear end of the outer tank body 1 is cylindrical, the front end is conical, and the outlet 1 is arranged at the front end of the outer tank body 1, so that the inner wall surface of the outer tank body 1 can be a curved surface structure;

[0098] The inner tank body 11 is a streamlined structure with both the front and rear ends being set in a conical shape, and the second outlet 16 is set at the front end of the inner tank body 11;

[0099] The air outlet end of the connecting tube 2 extends into the inner cavity of the outer tank body 1 and is aligned with the rear end of the inner tank body 11. Due to the curved surface structure design of the inner cavity wall of the outer tank body 1 and the streamlined structure design of the inner tank body 11, when the air outlet of the connecting tube 2 is aligned with the rear end of the inner tank body 11 to inflate the outer tank body 1, it can reduce the occurrence of unstable airflow, such as eddy currents and turbulence, to a certain extent, thereby reducing the disturbance effect on the flame of the igniter 18, such as accidental blowout, to a certain extent.

[0100] The device is also provided with an ignition mechanism cooperating with the igniter 18, and the ignition mechanism includes a driving mechanism and a linkage mechanism;

[0101] The driving mechanism includes a sleeve 13 arranged at the front end of the outlet 1, a plurality of slide grooves are arranged on the inner wall of the sleeve 13, a circular cover plate 32 for closing the outlet 1 is slidably arranged in the sleeve 13, a plurality of slide plates cooperating with the slide grooves are arranged on the outer arc surface of the circular cover plate 32, the slide plates are slidably arranged in the corresponding slide grooves, a spring 15 is arranged in each of the plurality of slide grooves, one end of the spring 15 is arranged on the end surface inside the slide groove, and the other end of the spring 15 is arranged on the corresponding slide plate;

[0102] A linkage mechanism is connected to the inner side of the circular cover plate 32 facing the inner cavity of the outer tank body 1, and the free end of the linkage mechanism is connected to the igniter 18. High-pressure air is filled into the outer tank body 1. When the pressure in the outer tank body 1 increases to a certain value, the airflow will push the circular cover plate 32 to overcome the force of the spring 15 and slide toward the front end, and at the same time drive the linkage mechanism to operate, thereby realizing the ignition of the igniter 18.

[0103] A through air outlet is provided in the middle of the circular cover plate 32, and a sealing cover 14 that can be sealed is provided at the air outlet. A pair of bracket plates are provided on the outer side of the circular cover plate 32, and a transition plate is provided on one side of the sealing cover 14. A circular shaft 1 is provided on both sides of the transition plate, and the free ends of the circular shaft 1 on both sides are rotatably provided on the bracket plates on both sides, and a torsion spring 33 is provided on the periphery of the circular shaft 1 on both sides, one end of the torsion spring 33 is fixed on the bracket plate, and the other end of the torsion spring 33 is fixed on the transition plate. The action force of the torsion spring 33 is greater than the action force of the spring 15, that is, after the circular cover plate 32 is pushed to slide to the limit position by the air flow pressure, the pressure in the outer tank body 1 is further increased to push the sealing cover 14 to overcome the action force of the torsion spring 33 and rotate, thereby completely opening the sealing cover 14, and then the high-pressure air flows out through the air outlet. The setting of this structure can ensure that the outer tank body 1 is filled with air with a certain pressure before the air outlet is opened, and the inflow of external air after opening is prevented to avoid the occurrence of danger.

[0104] The linkage mechanism includes a mounting plate 17 arranged on the inner wall of the inner tank body 11, a fixing block 1 26, a fixing block 22 and a fixing block 3 28 are arranged on the side of the mounting plate 17, the fixing block 1 26 and the fixing block 2 22 are arranged on the upper side of the fixing block 3 28 and the two are flush, a U-shaped groove is arranged on the side of the fixing block 1 26 facing the fixing block 2 22, a rotating shaft is arranged in the U-shaped groove, a connecting plate 1 25 is arranged on the periphery of the rotating shaft, a circular shaft 2 is arranged on the side of the connecting plate 1 25 near the free end, and a connecting plate 2 23 and a connecting plate 3 24 are rotatably arranged on the periphery of the circular shaft 2;

[0105] The fixed block 22 is provided with a through hole 1 which passes through the left and right sides, and a round rod 21 is slidably arranged in the through hole 1. The fixed block 3 28 is provided with a through hole 2 which passes through the top and bottom sides, and a round rod 27 is slidably arranged in the through hole 2. The free end of the connecting plate 23 is hinged to one end of the round rod 1 21, and the other end of the round rod 1 21 is connected to the round cover plate 32 through the transition rod 12. The free end of the connecting plate 3 24 is hinged to the upper end of the round rod 27, and a Z-shaped auxiliary plate 31 is provided at the lower end of the round rod 27, and a cylindrical actuator rod 29 is provided at the free end of the Z-shaped auxiliary plate 31.

[0106] The igniter 18 is a piezoelectric lighter structure. A gate-shaped bracket is provided on the igniter 18. A through hole 3 aligned with the push switch 30 of the igniter 18 is provided on the upper side of the gate-shaped bracket. The actuator rod 29 is slidably arranged in the through hole 3. A certain distance is arranged between the free end of the actuator rod 29 and the push switch 30 to ensure that the push switch 30 is pressed down to ignite when the round cover plate 32 slides to the limit position.

[0107] The working principle of the linkage mechanism is as follows: the circular cover plate 32 slides outward, and drives the round rod 1 21 to slide away from the fixed block 1 26 through the transition rod 12, which will straighten the connecting plate 1 25 and the connecting plate 2 23, and then drive the connecting plate 3 24 to press downward, and then drive the round rod 2 27 to slide downward, and then drive the actuator rod 29 to press downward, and vice versa. In addition, a limit ring is provided on the periphery of the round rod 27 on the upper side of the fixed block 3 28. The limit ring can ensure the effective operation of the linkage mechanism, and can also protect the igniter 18 from being damaged by excessive action.

[0108] The device is also provided with a lifting mechanism, which includes a rectangular rod 4 arranged on the outer side of the lower side of the outer tank body 1, a rectangular tube 5 is slidably sleeved on the outer periphery of the rectangular rod 4, and a handle 7 is arranged on the side of the rectangular tube 5 near the lower end;

[0109] A support plate 1 is provided on the side of the rectangular rod 4 close to the outer tank body 1, a support plate 2 is provided at the lower end of the rectangular tube 5, a round tube 9 is provided on the support plate 2, an inner rod 10 is slidably provided in the round tube 9, the upper end of the inner rod 10 is provided on the support plate 1, a connecting pipe 2 is provided on the side of the round tube 9 close to the lower end, a gas pipe 2 is provided on the connecting pipe 2 and connected to the gas supply equipment, a valve switch is provided on the connecting pipe 2, and the valve switch is a prior art. The round tube 9 is inflated through the valve switch, and the gas pushes the inner rod 10 to slide upward, thereby driving the rectangular rod 4 to slide upward, thereby facilitating the detection of flame detectors at a certain height.

[0110] A connecting pipe 3 3 is provided at the rear end of the inner tank body 11 , and an air pipe 3 is provided after the connecting pipe 3 3 freely passes through the outer tank body 1 to be connected to the fume purifier.

[0111] The device is also provided with a central control valve, which includes a fixing member 6 arranged on one side of the rectangular tube 5, and the fixing member 6 is provided with a through hole 4 and a through hole 5 which are connected from top to bottom. The upper end of the through hole 4 is connected with the air pipe 3, and the lower end of the through hole 4 is connected with the smoke purifier through the air pipe 4. The upper end of the through hole 5 is connected with the air pipe 1, and the lower end of the through hole 5 is connected with the air supply device through the air pipe 5. Specifically, the upper and lower ends of the through hole 4 and the through hole 5 are provided with pipeline transition joints, and then connected with the corresponding air pipes through the pipeline transition joints;

[0112] A through hole six penetrating through the through hole four and the through hole five is provided on the side of the fixing member 6, and a round rod three 34 is rotatably provided in the through hole six. A through hole seven 36 and a through hole eight 35 respectively cooperating with the through hole four and the through hole five are provided on the rod body of the round rod three 34, and the through hole seven 36 and the through hole eight 35 are perpendicular to each other. A handle 8 is provided at the free end of the round rod three 34. By rotating the handle 8, when the through hole seven 36 is connected with the through hole four, the through hole five and the through hole eight 35 are disconnected. Similarly, when the through hole five and the through hole eight 35 are connected, the through hole seven 36 and the through hole four are disconnected.

[0113] The device is also provided with an observation mechanism, which includes a plane mirror 19 arranged on the inner wall of the inner tank body 11, the plane mirror 19 corresponds to the outlet 16 and forms an angle of 45° with the central axis of the outlet 16, and the corresponding lower side of the inner tank body 11 and the lower side of the outer tank body 1 are both made of transparent materials;

[0114] The rectangular rod 4 is configured as a hollow tube that passes through from top to bottom and the rectangular rod 4 corresponds to the plane mirror 19 and forms an angle of 45°. A plane mirror 20 is provided near the lower end of the rectangular tube 5 at an angle of 45°. An observation window is provided on the side of the rectangular tube 5 corresponding to the plane mirror 20. Through the observation mechanism, the outlet 1 of the device can be manipulated to align with the flame detector for easy detection.

[0115] Working principle: when in use, firstly operate the outlet 1 of the device through the lifting mechanism and the observation mechanism to align it with the flame detector to be detected, then turn the handle 8 to connect the through hole 5 and the through hole 8 35, so that the gas supply device fills the outer tank body 1 with high-pressure air. When the air pressure in the outer tank body 1 reaches a certain value, it will push the circular cover plate 32 to overcome the force of the spring 15 and slide to the front end, and at the same time drive the linkage mechanism to move. When the circular cover plate 32 slides to the limit position, the linkage mechanism realizes the ignition of the igniter 18. At this time, the outlet 1 or the air outlet of the outer tank body 1 is sealed by the circular cover plate 32 and the sealing cover 14, so there will be no danger. When the air pressure in the outer tank body 1 further increases, the sealing cover 14 will be pushed open, and the air flow will flow out from the air outlet. Because it is a high-pressure air flow, the outside air cannot enter the outer tank body 1, and there will be no danger. At this time, the open flame and the flame detector are unimpededly facing each other, that is, the detection of the flame detector by the real open flame is realized.

[0116] After the detection is completed, the handle 8 is turned to connect the through hole 7 36 with the through hole 4. At this time, the through hole 5 and the through hole 8 35 are disconnected, and the high-pressure air in the outer tank body 1 will flow into the smoke purifier outside along the corresponding pipeline. When the air pressure in the outer tank body 1 is reduced, the cover 14 will close the air outlet under the action of the torsion spring 33. Since the air pressure in the outer tank body 1 is always greater than the external air pressure during this process, the external air will not enter the outer tank body 1, so there is no danger. When the air pressure is further reduced, the round cover plate 32 is reset under the action of the spring 15, and then the push switch 30 of the igniter 18 is reset through the linkage mechanism. During this process, the flame can be blown out by the airflow flowing into the smoke purifier, or it can be extinguished after the push switch 30 is reset. This process is completed without contact with the external air, so there is no danger.

[0117] Technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. An open flame detection device for a flame detector, characterized in that: It comprises an outer tank body (1), an inner tank body (11), an igniter (18) and an air supply device storing compressed air; The inner tank body (11) is arranged in the middle of the inner cavity of the outer tank body (1); the outlet 1 of the outer tank body (1) is coaxial with the outlet 2 (16) of the inner tank body (11), and the outlet 1 and the outlet 2 (16) are oriented in the same direction; the igniter (18) is arranged on the lower side wall of the inner cavity of the inner tank body (11); the upper end of the igniter (18) is set as a flame spraying end, and the flame spraying end is located in the middle of the inner cavity of the inner tank body (11) and corresponds to the outlet 2 (16); the rear end of the outer tank body (1) away from the outlet 1 is provided with a connecting pipe 1 (2); and the connecting pipe 1 (2) is provided with a gas pipe 1 connected to a gas supply device.

2. The open flame detection device for flame detector according to claim 1, characterized in that: The device is also provided with an ignition mechanism cooperating with the igniter (18), wherein the ignition mechanism comprises a driving mechanism and a linkage mechanism; The driving mechanism comprises a sleeve (13) arranged at the front end of the outlet 1, a plurality of slide grooves are arranged on the inner wall of the sleeve (13), a circular cover plate (32) for closing the outlet 1 is slidably arranged in the sleeve (13), a plurality of slide plates cooperating with the slide grooves are arranged on the outer arc surface of the circular cover plate (32), the slide plates are slidably arranged in the corresponding slide grooves, a spring (15) is arranged in each of the plurality of slide grooves, one end of the spring (15) is arranged on the inner end surface of the slide groove, and the other end of the spring (15) is arranged on the corresponding slide plate; The linkage mechanism is connected to the inner side surface of the circular cover plate (32) facing the inner cavity of the outer tank body (1), and the free end of the linkage mechanism is connected to the igniter (18).

3. The open flame detection device for flame detector according to claim 2, characterized in that: A through air outlet is provided in the middle of the circular cover plate (32), and a sealing cover (14) capable of sealing is provided at the air outlet. A pair of bracket plates are provided on the outer side of the circular cover plate (32), and a transition plate is provided on one side of the sealing cover (14). A circular shaft 1 is provided on both sides of the transition plate, and the free ends of the circular shaft 1 on both sides are rotatably provided on the bracket plates on both sides, respectively. A torsion spring (33) is provided on the periphery of the circular shaft 1 on both sides, and one end of the torsion spring (33) is fixed to the bracket plate, and the other end of the torsion spring (33) is fixed to the transition plate.

4. The open flame detection device for flame detector according to claim 2, characterized in that: The linkage mechanism comprises a mounting plate (17) arranged on the inner wall surface of the inner tank body (11), a fixing block 1 (26), a fixing block 2 (22) and a fixing block 3 (28) being arranged on the side surface of the mounting plate (17), the fixing block 1 (26) and the fixing block 2 (22) being arranged on the upper side of the fixing block 3 (28) and being flush with each other, a U-shaped groove being arranged on the side surface of the fixing block 1 (26) facing the fixing block 2 (22), a rotating shaft being arranged on the U-shaped groove, a connecting plate 1 (25) being arranged on the periphery of the rotating shaft, a circular shaft 2 being arranged on the side surface of the connecting plate 1 (25) close to the free end, and a connecting plate 2 (23) and a connecting plate 3 (24) being rotatably arranged on the periphery of the circular shaft 2; The second fixing block (22) is provided with a through hole one extending horizontally, a round rod one (21) is slidably arranged in the through hole one, the third fixing block (28) is provided with a through hole two extending vertically, a round rod two (27) is slidably arranged in the through hole two, the free end of the second connecting plate (23) is hinged to one end of the first round rod (21), the other end of the first round rod (21) is connected to the circular cover plate (32) through a transition rod (12), the free end of the third connecting plate (24) is hinged to the upper end of the second round rod (27), the lower end of the second round rod (27) is provided with a Z-shaped auxiliary plate (31), and the free end of the Z-shaped auxiliary plate (31) is provided with a cylindrical actuator rod (29); The igniter (18) is a piezoelectric lighter structure. A door-shaped bracket is provided on the igniter (18). A through hole three is provided on the upper side surface of the door-shaped bracket and is aligned with the push switch (30) of the igniter (18). The actuator rod (29) is slidably arranged in the through hole three.

5. The open flame detection device for flame detector according to claim 1, characterized in that: The device is also provided with a lifting mechanism, which comprises a rectangular rod (4) arranged on the outer side of the lower side of the outer tank body (1), a rectangular tube (5) is provided on the outer sliding sleeve of the rectangular rod (4), and a handle (7) is provided on the side surface of the rectangular tube (5) close to the lower end; A support plate 1 is arranged on the side of the rectangular rod (4) close to the outer tank body (1), a support plate 2 is arranged at the lower end of the rectangular tube (5), a round tube (9) is arranged on the support plate 2, an inner rod (10) is slidably arranged in the round tube (9), the upper end of the inner rod (10) is arranged on the support plate 1, a connecting pipe 2 is arranged on the side of the round tube (9) close to the lower end, a gas pipe 2 is arranged on the connecting pipe 2 to connect to the gas supply equipment, and a valve switch is arranged on the connecting pipe 2.

6. The open flame detection device for flame detector according to claim 1, characterized in that: A connecting pipe three (3) is provided at the rear end of the inner tank body (11), and an air pipe three is provided after the connecting pipe three (3) freely passes through the outer tank body (1) to connect to the smoke purifier.

7. The open flame detection device for a flame detector according to claim 1, characterized in that: The outer tank body (1) is a bottle-shaped structure as a whole, that is, the rear end of the outer tank body (1) is cylindrical, and the front end is conical, and the outlet 1 is arranged at the front end of the outer tank body (1); The inner tank body (11) is a streamlined structure with both the front and rear ends being arranged in a conical shape, and the second outlet (16) is arranged at the front end of the inner tank body (11); The connecting pipe 1 (2) extends into the inner cavity of the outer tank body (1) and has its air outlet end aligned with the rear end of the inner tank body (11).

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