Fire sprinkler head detection device and method

Abstract

The application discloses a fire-fighting spray head detection device, which comprises a test box and two supporting plates, the two supporting plates are fixedly connected to the left and right ends of the lower surface of the test box, a pressure pipe and a hopper are installed at the upper and lower ends of the test box, a plurality of mounting screw holes are equidistantly formed in the lower surface of the pressure pipe from left to right, the fire-fighting spray head is installed through the mounting screw holes, a plurality of temperature controllers are installed on the front side of the upper surface of the test box from left to right, a plurality of alarm lamps are also installed on the front side of the upper surface of the test box from left to right, the alarm lamps emit light to prompt the staff that the fire-fighting spray head is a qualified product, a plurality of heating mechanisms are installed on the rear side of the inner cavity of the test box from left to right, and the heating mechanisms reach the specified temperature under the temperature control of the temperature controllers. The fire-fighting spray head can be detected, the heating speed is high, the detection efficiency is improved, the fire-fighting water has the purification function, the fire-fighting water can be reused, and the effect of saving water resources is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fire-fighting technology, in particular to a fire-fighting spray head detection device and method. BACKGROUND

[0002] The fire-fighting spray head is used for a fire-fighting spray system, when a fire occurs, water is splashed out through the splash plate of the spray head to extinguish the fire, and is divided into downward type sprinkler, upright type sprinkler, ordinary type sprinkler, and side wall type sprinkler. It is mainly composed of a sprinkler, a liquid-filled heat-sensitive glass ball, a water pipe plug and a water pipe. Among them, the heat-sensitive glass ball stores kerosene, ether solution and other solutions, and the kerosene expands when heated, and when the glass ball is broken, the sprinkler sprays water outward to achieve fire extinguishing.

[0003] The glass ball is divided into various colors, and the action temperature is: red 68℃, yellow 79℃, green 93℃, and blue 141℃. In order to ensure that the fire-fighting spray head can be used normally, it is necessary to detect the action temperature of the fire-fighting spray head through the detection device. When the detection box is heated, due to the large space, the heating is slow, and only the same type of fire-fighting spray head can be detected, the detection is not flexible, and the efficiency is low. Broken glass fragments mixed in water can easily damage the water pump or other related parts. When the glass ball is broken, the kerosene falls into the water, which can cause water pollution, resulting in that the fire-fighting water cannot be reused, and water resources are wasted. SUMMARY

[0004] The purpose of the present application is to provide a fire-fighting spray head detection device and method to at least solve the problems of single type of fire-fighting spray head detection in the prior art, and the glass fragments cannot be collected, and oil-water separation cannot be achieved.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a fire-fighting spray head detection device, comprising a test box and two support plates, the two support plates are respectively fixedly connected to the left and right ends of the lower surface of the test box, the upper and lower ends of the test box are respectively provided with a pressure pipe and a hopper, a plurality of mounting screw holes are equidistantly formed on the lower surface of the pressure pipe from left to right, the fire-fighting spray head is mounted through the mounting screw holes, a plurality of temperature controllers are mounted on the front side of the upper surface of the test box from left to right, a plurality of alarm lamps are also mounted on the front side of the upper surface of the test box from left to right, the alarm lamps emit light to prompt the staff that the fire-fighting spray head belongs to a qualified product, a plurality of heating mechanisms are installed on the rear side of the inner cavity of the test box from left to right, and the heating mechanisms reach the specified temperature under the temperature control of the temperature controller, a water supply mechanism is installed at the bottom of the hopper, and the water supply mechanism is connected with the pressure pipe through a water pipe, and a controller electrically connected with the alarm lamp is installed on the left side wall of the test box.

[0006] The fire-fighting spray head detection device further comprises a display electrically connected with the controller, and the display integrates an intelligent analysis module for analyzing temperature response delay.

[0007] Preferably, the heating mechanism comprises a lifting assembly installed at the back side of the inner cavity of the test box, a sleeve is connected to the front end of the lifting assembly through a pin shaft, a heating plate electrically connected with the temperature controller is installed on the inner wall of the sleeve, the fire sprinkler head is heated by the heating plate, a horizontal plate is installed at the bottom of the sleeve, a temperature sensing probe electrically connected with the temperature controller is installed on the upper surface of the horizontal plate, the temperature sensing probe converts the temperature signal into an electric signal and feeds back to the temperature controller, the temperature controller controls the start and stop of the heating plate to control the heating temperature of the fire sprinkler head, a water storage tank is connected to the right side of the upper surface of the horizontal plate through a pin shaft, a counterweight is installed at the right end of the water storage tank, the water storage tank rotates clockwise under the gravity of the counterweight, a pressure sensitive sensor electrically connected with the controller is installed at the right end of the lower surface of the horizontal plate, when the water storage tank rotates counterclockwise, the counterweight triggers the pressure sensitive sensor, the controller receives the signal to power on the alarm lamp, a mesh tube is screwed on the bottom of the outer wall of the sleeve to collect the broken glass ball fragments on the fire sprinkler head.

[0008] The temperature of the heating plate can be controlled by the temperature controller and the temperature sensing probe to detect fire sprinkler heads of various specifications.

[0009] Preferably, the volume of the left side of the inner cavity of the water storage tank is greater than that of the right side.

[0010] Preferably, the sleeve is close to or away from the fire sprinkler head, the lifting assembly comprises a base plate installed at the back side of the inner cavity of the test box, rotating shafts capable of rotating around their own axes are installed on the upper and lower ends of the right side wall of the base plate through bearings, connecting rods and first gears are installed at the left and right ends of the rotating shafts respectively, the front end of the connecting rod is connected to the outer wall of the sleeve through a pin shaft, a second gear meshed with the first gear is connected to the middle part of the right side wall of the base plate through a pin shaft, a limiting slot is formed in the outer wall of the second gear, a limiting pin is inserted into the inner cavity of the limiting slot and installed on the right side wall of the base plate, the rotation angle of the second gear is restricted by the limiting pin, a positioning pin is installed on the outer wall of the second gear, the limiting pin and the positioning pin are installed on the outer wall of the limiting pin and the positioning pin, the second gear is pulled under the tension of the tension spring, the second gear can be stopped at the current position by the blocking of the limiting pin, a protective cover is installed on the right side wall of the base plate to protect the transmission of the first gear and the second gear from external environmental interference.

[0011] Preferably, the sleeve is located directly below the mounting screw hole.

[0012] Preferably, the water supply mechanism comprises a water tank installed at the bottom of the funnel, a self-priming pump is installed on the left side wall of the water tank and electrically connected with the controller, the inlet of the self-priming pump is connected with the outer wall of the water tank, the outlet of the self-priming pump is connected with the left end of the pressure pipe through a water pipe, under the suction of the self-priming pump, the fire-fighting water in the water tank is transported into the pressure pipe, a motor is installed on the lower surface of the water tank and electrically connected with the controller, a stirring assembly is installed on the output end of the motor, and a plurality of magnetic two-faced god microspheres are placed in the water tank; electromagnetic coils are installed on the top of the left and right side walls of the water tank and electrically connected with the controller.

[0013] The electromagnetic coils generate a magnetic field to change the movement direction of the kerosene, and the magnetic two-faced god microspheres adsorb the kerosene droplets.

[0014] Preferably, the stirring assembly comprises an inner rod installed on the output end of the motor, an outer rod is sleeved on the outer wall of the inner rod, a tray is installed on the bottom end of the outer wall of the outer rod, a mesh is arranged on the surface of the tray, the magnetic two-faced god microspheres can be dragged out of the water tank when the tray rises, stirring rods are installed on the left and right sides of the upper surface of the tray, the stirring rods can make circular motion when the inner rod rotates under the drive of the motor, the stirring rods stir the fire-fighting water, and positioning bolts are screwed on the top of the outer rod to position the outer rod when the positioning bolts are threadedly engaged with the inner rod.

[0015] Preferably, the shape of the outer wall of the inner rod is a regular polygon.

[0016] The fire-fighting spray head detection device and the detection method have the beneficial effects that:

[0017] 1. The sleeve is raised or lowered through the lifting assembly, the heating plate is sleeved on the fire-fighting spray head, the temperature of the heating plate is controlled under the cooperation of the temperature controller and the temperature sensing probe, the fire-fighting spray head is heated to the action temperature, the fire-fighting water is sprayed out of the fire-fighting spray head when the fire-fighting spray head acts, the fire-fighting water in the water storage tank gradually increases, the gravity also gradually moves to the left, until the water storage tank rotates counterclockwise, the counterweight triggers the pressure-sensitive sensor, the controller makes the alarm light emit light, and the staff is reminded that the fire-fighting spray head can normally act at the preset temperature, and the glass ball fragments are collected by the mesh cylinder, so that a plurality of fire-fighting spray heads can be detected, the heating speed is fast, and the detection efficiency is improved.

[0018] 2. The electromagnetic coils generate a magnetic field around the water tank, the motor drives the stirring rods to rotate, the fire-fighting water is stirred, the oil droplets move towards the magnetic field direction, the magnetic two-faced god microspheres absorb the oil droplets, and the oil-water separation is performed, so that the fire-fighting water purification function is achieved, the fire-fighting water can be reused, and the effect of saving water resources is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The figure is a structural schematic view of the application.

[0020] Figure 2 is a front view of the pressure pipe;

[0021] Figure 3 is an exploded view of the heating mechanism;

[0022] Figure 4 is a schematic view of the water storage tank structure;

[0023] Figure 5 is a right view of the lifting assembly;

[0024] Figure 6 is a schematic view of the water supply mechanism structure;

[0025] Figure 7 is a front view of the water supply mechanism;

[0026] Figure 8 is a schematic view of the stirring assembly.

[0027] In the figure: 1, test box; 2, support plate; 3, hopper; 4, pressure pipe; 5, mounting screw hole; 6, temperature controller; 7, alarm lamp; 8, heating mechanism; 9, water supply mechanism; 10, controller; 81, lifting assembly; 82, sleeve; 83, heating plate; 84, cross plate; 85, temperature sensing probe; 86, water storage tank; 87, counterweight; 88, pressure sensor; 89, mesh tube; 811, base plate; 812, rotating shaft; 813, connecting rod; 814, first gear; 815, second gear; 816, limiting groove; 817, limiting pin; 818, positioning pin; 819, tension spring; 8110, protective cover; 91, water tank; 92, self-priming pump; 93, motor; 94, stirring assembly; 95, magnetic two-sided microsphere; 96, electromagnet; 941, inner rod; 942, outer rod; 943, tray; 944, stirring rod; 945, positioning bolt. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] Please refer to Figures 1-8The application provides a technical scheme: a fire sprinkler detection device, which comprises a test box 1 and two support plates 2, the two support plates 2 are respectively fixedly connected to left and right ends of the lower surface of the test box 1, a pressure pipe 4 and a funnel 3 are respectively installed at the upper and lower ends of the test box 1, a plurality of mounting screw holes 5 are equidistantly formed in the lower surface of the pressure pipe 4 from left to right, the fire sprinkler is mounted through the mounting screw holes 5, a plurality of temperature controllers 6 are installed on the front side of the upper surface of the test box 1 from left to right, a plurality of alarm lamps 7 are also installed on the front side of the upper surface of the test box 1 from left to right, the alarm lamps 7 emit light to prompt the staff that the fire sprinkler is a qualified product, a plurality of heating mechanisms 8 are installed on the rear side of the inner cavity of the test box 1 from left to right, the heating mechanisms 8 reach the specified temperature under the temperature control of the temperature controllers 6, a water supply mechanism 9 is installed at the bottom of the funnel 3, the water supply mechanism 9 is connected with the pressure pipe 4 through a water pipe, and a controller 10 electrically connected with the alarm lamps 7 is installed on the left side wall of the test box 1.

[0030] The fire sprinkler detection device further comprises a display 11, the display 11 is electrically connected with the controller 10, the display 11 is integrated with an intelligent analysis module and is used for analyzing temperature response delay.

[0031] When the temperature controller 6 receives the action temperature set by the user and starts the heating plate 83, the controller 10 can record the initial time point; when the pressure-sensitive sensor 88 is triggered (the water storage tank 86 rotates counterclockwise), the controller 10 records the termination time point; the time difference between the two is the “temperature response delay”, which can be transmitted to the intelligent analysis module for calculation through the controller 10; the temperature change curve and the response time point of the heating process can be generated by the display 11 through the controller 10 recording the time stamp of heating start and water spraying action (temperature response delay), so that the technical personnel can intuitively analyze.

[0032] As a preferred scheme, further, the heating mechanism 8 comprises a lifting assembly 81 installed at the back side of the inner cavity of the test box 1, a sleeve 82 connected to the front end of the lifting assembly 81 through a pin shaft, the sleeve 82 is located directly below the mounting screw hole 5, when the sleeve 82 is sleeved on the fire sprinkler head, the fire sprinkler head is located at the center position of the heating plate 83, so that the fire sprinkler head is uniformly heated, the inner wall of the sleeve 82 is provided with the heating plate 83 electrically connected with the temperature controller 6, the fire sprinkler head is heated through the heating plate 83, the bottom of the sleeve 82 is provided with a horizontal plate 84, the upper surface of the horizontal plate 84 is provided with the temperature sensing probe 85 electrically connected with the temperature controller 6 at the left side, the temperature sensing probe 85 converts the temperature signal into an electric signal and feeds back to the temperature controller 6, the temperature controller 6 controls the start and stop of the heating plate 83, so as to control the heating temperature of the fire sprinkler head, the right side of the upper surface of the horizontal plate 84 is connected with the water storage tank 86 through a pin shaft, the inner cavity of the water storage tank 86 is larger at the left side than at the right side, when the fire water gradually enters the water storage tank 86, the gravity of the water storage tank 86 gradually leans to the left, and finally the water storage tank 86 is counterclockwise under the action of the gravity of the fire water, so that the fire water in the water storage tank 86 is poured out, the right end of the water storage tank 86 is provided with the counterweight 87, the water storage tank 86 is rotated clockwise under the action of the gravity of the counterweight 87, the right end of the lower surface of the horizontal plate 84 is provided with the pressure sensitive sensor 88 electrically connected with the controller 10, when the water storage tank 86 rotates counterclockwise, the counterweight 87 triggers the pressure sensitive sensor 88, the controller 10 receives the signal to power on the alarm lamp 7, the outer wall of the sleeve 82 is screwed with the mesh cylinder 89, and the broken glass ball fragments on the fire sprinkler head are collected through the mesh cylinder 89.

[0033] As a preferred scheme, further, the lifting assembly 81 comprises a base plate 811 installed at the back side of the inner cavity of the test box 1, the right side wall of the base plate 811 is provided with the rotating shaft 812 capable of rotating around its own axis at the upper and lower ends through bearings, the rotating shaft 812 is provided with the connecting rod 813 and the first gear 814 at the left and right ends respectively, the front end of the connecting rod 813 is connected with the outer wall of the sleeve 82 through a pin shaft, the right side wall of the base plate 811 is provided with the second gear 815 engaged with the first gear 814 through a pin shaft at the middle part, the outer wall of the second gear 815 is provided with the limiting groove 816, the right side wall of the base plate 811 is provided with the limiting pin 817 inserted into the inner cavity of the limiting groove 816, the rotation angle of the second gear 815 is restricted through the limiting pin 817, the outer wall of the second gear 815 is provided with the positioning pin 818, the outer wall of the limiting pin 817 is provided with the tension spring 819, the second gear 815 is pulled under the tension of the tension spring 819, the second gear 815 can be stopped at the current position through the blocking of the limiting pin 817, the right side wall of the base plate 811 is provided with the protective cover 8110, the transmission of the first gear 814 and the second gear 815 is not disturbed by the external environment through the protective cover 8110.

[0034] As a preferred scheme, further, the water supply mechanism 9 includes a water tank 91 installed at the bottom of the funnel 3, a self-priming pump 92 is installed on the left side wall of the water tank 91 and electrically connected with the controller 10, the liquid inlet of the self-priming pump 92 is connected with the outer wall of the water tank 91, the liquid outlet of the self-priming pump 92 is connected with the left end of the pressure pipe 4 through a water pipe, under the suction of the self-priming pump 92, the fire-fighting water in the water tank 91 is transported into the pressure pipe 4, a motor 93 is installed on the lower surface of the water tank 91 and electrically connected with the controller 10, a stirring assembly 94 is installed on the output end of the motor 93, a plurality of magnetic two-faced god microspheres 95 are placed in the water tank 91, and electromagnets 96 are installed on the top of the left and right side walls of the water tank 91 and electrically connected with the controller 10.

[0035] As a preferred scheme, further, the stirring assembly 94 includes an inner rod 941 installed on the output end of the motor 93, an outer rod 942 is sleeved on the outer wall of the inner rod 941, the outer wall of the inner rod 941 is shaped as a regular polygon, which limits the outer rod 942 and enables the inner rod 941 and the outer rod 942 to rotate synchronously, a tray 943 is installed on the bottom end of the outer wall of the outer rod 942, the surface of the tray 943 is provided with mesh holes, when the tray 943 rises, the magnetic two-faced god microspheres 95 can be dragged out of the water tank 91, stirring rods 944 are installed on the left and right sides of the upper surface of the tray 943, when the motor 93 drives the inner rod 941 to rotate, the stirring rods 944 can make circular motion, the stirring rods 944 stir the fire-fighting water, and positioning bolts 945 are screwed on the top of the outer rod 942, which can position the outer rod 942 when the positioning bolts 945 are threadedly engaged with the inner rod 941.

[0036] Working principle:

[0037] Step one, tighten the fire sprinkler on the mounting screw hole 5, move the sleeve 82 up and down, so that the connecting rod 813 can drag the first gear 814 to rotate, under the rotating condition of the first gear 814 and the second gear 815, the positioning pin 818 rotates, the tension of the tension spring 819 can drag the positioning pin 818 to move towards the limiting pin 817, under the mutual blocking of the limiting pin 817 and the limiting groove 816, the second gear 815 stops, the sleeve 82 can be fixed after moving up and down, therefore, the heating plate 83 can approach and move away from the fire sprinkler;

[0038] Step two, set the temperature controller 6 according to the action temperature of the fire sprinkler, the heating plate 83 heats, the temperature signal is converted into an electric signal by the temperature sensing probe 85 and fed back to the temperature controller 6, so that the heating plate 83 reaches the action temperature of the fire sprinkler, the kerosene in the glass ball of the fire sprinkler expands, the glass ball cannot withstand the pressure and breaks, causing the fire sprinkler to act;

[0039] Step three, the self-suction pump 92 under its own suction force introduces the fire-fighting water in the water tank 91 into the pressure pipe 4, the fire-fighting water is sprayed from the fire-fighting spray head, the water tank 86 collects the fire-fighting water, as the fire-fighting water in the water tank 86 increases, the gravity also gradually leans to the left, after the water tank 86 is filled, the water tank 86 rotates counterclockwise under the gravity of the fire-fighting water, at the same time that the fire-fighting water in the water tank 86 pours down, the counterweight 87 triggers the pressure sensor 88, feeds back an electric signal to the controller 10, causes the alarm lamp 7 to emit light, indicating that the fire-fighting spray head can act at the preset temperature, if the alarm lamp 7 does not emit light, it indicates that the fire-fighting spray head is unqualified;

[0040] When the temperature controller 6 receives the set action temperature and starts the heating plate 83, the controller 10 can record the initial time point; when the pressure sensor 88 is triggered, the controller 10 records the termination time point; the time difference between the two is the temperature response delay, which is transmitted to the intelligent analysis module for calculation through the controller 10; the controller 10 records the time stamp of the heating start and the water spraying action, and the display 11 generates the temperature change curve and response time point of the heating process, so as to predict the response time of the qualified fire-fighting spray head;

[0041] Step four, after the fire-fighting water in the water tank 86 is discharged, the gravity of the counterweight 87 makes the water tank 86 rotate, and the glass ball fragments are collected after being filtered by the mesh tube 89, and the kerosene and fire-fighting water fall into the water tank 91;

[0042] Step five, when it is needed to separate the kerosene from the fire-fighting water, the motor 93 and the electromagnet 96 are started through the controller 10, the electromagnet 96 generates a magnetic field, the motor 93 drives the tray 943 and the stirring rod 944 to rotate, the stirring rod 944 stirs the fire-fighting water, under the action of the external magnetic field, the large oil droplets stably combined will move towards the magnetic field direction, and the oil-loving hand of the magnetic two-faced god microsphere 95 has the characteristics of convex water-loving and concave oil-loving, which can form a good structural fit with the small oil droplets in the water, absorb the kerosene in the fire-fighting water, so that the fire-fighting water can be reused, and water resource pollution and waste are avoided;

[0043] Step six, when it is needed to take out the magnetic two-faced god microsphere 95, the positioning bolt 945 is unscrewed from the inner rod 941, the tray 943 is lifted, the tray 943 allows the fire-fighting water to pass through, and the tray 943 drags the magnetic two-faced god microsphere 95 from bottom to top, so that the magnetic two-faced god microsphere 95 can be quickly taken out.

[0044] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A fire sprinkler head testing device, comprising a test chamber (1) and two support plates (2), wherein the two support plates (2) are respectively fixedly connected to the left and right ends of the lower surface of the test chamber (1), characterized in that, The test chamber (1) is equipped with a pressure tube (4) and a funnel (3) at its upper and lower ends respectively. The lower surface of the pressure tube (4) is provided with several mounting screw holes (5) at equal intervals from left to right. The fire sprinkler head is installed through the mounting screw holes (5). Several temperature controllers (6) are installed on the front side of the upper surface of the test chamber (1) from left to right. Several alarm lights (7) are also installed on the front side of the upper surface of the test chamber (1) from left to right. The alarm lights (7) illuminate to indicate to the staff that the fire sprinkler head is a qualified product. Several heating mechanisms (8) are installed on the rear side of the inner cavity of the test chamber (1) from left to right. Under the temperature control of the temperature controllers (6), the heating mechanisms (8) are allowed to reach the specified temperature. A water supply mechanism (9) is installed at the bottom of the funnel (3). The water supply mechanism (9) is connected to the pressure tube (4) through a water pipe. A controller (10) electrically connected to the alarm lights (7) is installed on the left side wall of the test chamber (1). The fire sprinkler head detection device also includes a display (11), which is electrically connected to the controller (10). The display (11) integrates an intelligent analysis module for analyzing temperature response delay. The heating mechanism (8) includes a lifting assembly (81) installed on the rear side of the inner cavity of the test chamber (1). The front end of the lifting assembly (81) is connected to a sleeve (82) via a pin. A heating plate (83) electrically connected to a temperature controller (6) is installed on the inner wall of the sleeve (82). The fire sprinkler head is heated by the heating plate (83). A horizontal plate (84) is installed at the bottom of the sleeve (82). A temperature sensor (85) electrically connected to the temperature controller (6) is installed on the left side of the upper surface of the horizontal plate (84). The temperature sensor (85) converts the temperature signal into an electrical signal and feeds it back to the temperature controller (6). The temperature controller (6) controls the heating plate (83) to start and stop, thereby controlling the fire sprinkler head. Heating temperature, the upper surface of the horizontal plate (84) is connected to a water storage tank (86) by a pin on the right side, a counterweight (87) is installed at the right end of the water storage tank (86), the water storage tank (86) rotates clockwise under the gravity of the counterweight (87), a pressure sensor (88) electrically connected to the controller (10) is installed at the right end of the lower surface of the horizontal plate (84), when the water storage tank (86) rotates counterclockwise, the counterweight (87) triggers the pressure sensor (88), the controller (10) receives the signal and powers on the alarm light (7), a mesh tube (89) is screwed to the bottom of the outer wall of the sleeve (82), and the broken glass ball fragments on the fire sprinkler head are collected through the mesh tube (89).

2. The fire sprinkler head detection device according to claim 1, characterized in that, The volume on the left side of the inner cavity of the water storage tank (86) is greater than that on the right side.

3. The fire sprinkler head detection device according to claim 2, characterized in that, The lifting assembly (81) includes a base plate (811) installed on the rear side of the inner cavity of the test chamber (1). The upper and lower ends of the right side wall of the base plate (811) are each equipped with a rotating shaft (812) capable of rotating around its own axis via bearings. A connecting rod (813) and a first gear (814) are respectively installed on the left and right ends of the rotating shaft (812). The front end of the connecting rod (813) is connected to the outer wall of the sleeve (82) via a pin. A second gear (815) is connected to the middle of the right side wall of the base plate (811) via a pin and meshes with the first gear (814). A limiting groove (816) is formed on the outer wall of the second gear (815). The right side wall of the base plate (811) is equipped with a groove that meshes with the limiting groove. (816) A limiting pin (817) is inserted into the inner cavity. The limiting pin (817) constrains the rotation angle of the second gear (815). A positioning pin (818) is installed on the outer edge of the outer wall of the second gear (815). A tension spring (819) is installed on the outer wall of the positioning pin (818) and the limiting pin (817). The tension spring (819) pulls the second gear (815). The limiting pin (817) can block the second gear (815) to stay in the current position. A protective cover (8110) is installed on the right side wall of the base plate (811). The protective cover (8110) protects the transmission between the first gear (814) and the second gear (815) from external environmental interference.

4. The fire sprinkler head detection device according to claim 3, characterized in that, The sleeve (82) is located directly below the mounting screw hole (5).

5. A fire sprinkler head detection device according to claim 4, characterized in that, The water supply mechanism (9) includes a water tank (91) installed at the bottom of the funnel (3). A self-priming pump (92) electrically connected to the controller (10) is installed on the left side wall of the water tank (91). The inlet of the self-priming pump (92) is connected to the outer wall of the water tank (91). The outlet of the self-priming pump (92) is connected to the left end of the pressure pipe (4) through a water pipe. Under the suction of the self-priming pump (92), the fire water in the water tank (91) is transported to the pressure pipe (4). A motor (93) electrically connected to the controller (10) is installed on the lower surface of the water tank (91). A stirring assembly (94) is installed at the output end of the motor (93). Several magnetic dwarf microspheres (95) are placed in the water tank (91). Electromagnets (96) electrically connected to the controller (10) are installed on the top of the left and right side walls of the water tank (91).

6. A fire sprinkler head detection device according to claim 5, characterized in that, The stirring assembly (94) includes an inner rod (941) installed at the output end of a motor (93). An outer rod (942) is sleeved on the outer wall of the inner rod (941). A tray (943) is installed at the bottom of the outer wall of the outer rod (942). The surface of the tray (943) is provided with mesh holes. When the tray (943) rises, it can pull the magnetic two-sided microsphere (95) out of the water tank (91). Stirring rods (944) are installed on both the left and right sides of the upper surface of the tray (943). When the motor (93) drives the inner rod (941) to rotate, the stirring rods (944) can make circular motion and stir the fire water. A positioning bolt (945) is screwed to the top of the outer rod (942). When the positioning bolt (945) is threaded into the inner rod (941), the outer rod (942) is positioned.

7. A fire sprinkler head detection device according to claim 6, characterized in that, The outer wall of the inner rod (941) is a regular polygon.

8. A method for testing fire sprinkler heads, applied in a fire sprinkler head testing device as described in claim 7, characterized in that, Includes the following steps: Step 1: Tighten the fire sprinkler head onto the mounting screw hole (5). Move the sleeve (82) up and down to make the connecting rod (813) pull the first gear (814) to rotate. With the first gear (814) and the second gear (815) rotating, the positioning pin (818) rotates. The tension of the tension spring (819) can pull the positioning pin (818) to move closer to the limit pin (817). The second gear (815) stops under the mutual obstruction of the limit pin (817) and the limit groove (816). The sleeve (82) can be fixed after moving up and down. Therefore, the heating plate (83) can be moved closer to and away from the fire sprinkler head. Step 2: Set the temperature controller (6) according to the operating temperature of the fire sprinkler head, and the heating plate (83) implements heating. The temperature sensor (85) converts the temperature signal into an electrical signal and feeds it back to the temperature controller (6) so that the heating plate (83) reaches the operating temperature of the fire sprinkler head. The kerosene in the glass ball of the fire sprinkler head expands, and the glass ball cannot withstand the pressure and breaks, causing the fire sprinkler head to operate. Step 3: The self-priming pump (92) draws fire water from the water tank (91) into the pressure pipe (4) under its own suction. The fire water sprays out from the fire sprinkler head and the water storage tank (86) collects the fire water. As the amount of fire water in the water storage tank (86) increases, the gravity gradually shifts to the left. After the water storage tank (86) is full, it rotates counterclockwise under the gravity of the fire water. At the same time, the fire water in the water storage tank (86) pours down, and the counterweight (87) triggers the pressure sensor (88) to send an electrical signal to the controller (10), causing the alarm light (7) to light up. This indicates that the fire sprinkler head can operate at the preset temperature. If the alarm light (7) does not light up, it means that the fire sprinkler head is a defective product. When the temperature controller (6) receives the set operating temperature and starts the heating plate (83), the controller (10) can record the initial time point; when the pressure sensor (88) is triggered, the controller (10) records the termination time point; the time difference between the two is the temperature response delay, which is transmitted to the intelligent analysis module for calculation through the controller (10); by recording the timestamps of heating start and water spraying action through the controller (10), the display (11) generates the temperature change curve and response time point of the heating process, thereby enabling the prediction of the response time of qualified fire sprinkler heads; Step 4: After the fire water is discharged from the water storage tank (86), the counterweight (87) causes the water storage tank (86) to rotate, and the glass ball fragments are collected by the mesh cylinder (89), while the kerosene and fire water fall into the water tank (91). Step 5: When it is necessary to separate kerosene from fire water, the motor (93) and electromagnet (96) are started by the controller (10). The electromagnet (96) generates a magnetic field, and the motor (93) drives the tray (943) and stirring rod (944) to rotate. The stirring rod (944) stirs the fire water. Under the action of the external magnetic field, the stable and combined large oil droplets will move towards the direction of the magnetic field. The magnetic diaphragm microsphere (95) has the characteristics of being hydrophilic on the convex side and oleophilic on the concave side. Its oleophilic gripper can form a good structural fit with the tiny oil droplets in the water, absorb the kerosene in the fire water, and allow the fire water to be reused, avoiding water pollution and waste. Step 6: When it is necessary to remove the magnetic mammatus microsphere (95), unscrew the positioning bolt (945) from the inner rod (941), lift the tray (943), allow the fire water to pass through the tray (943), and the tray (943) will pull the magnetic mammatus microsphere (95) out from bottom to top, so that the magnetic mammatus microsphere (95) can be quickly removed.

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