Foam spraying fire-fighting device and method suitable for fire hazard security and protection of chemical equipment

Abstract

The invention belongs to the technical field of chemical safety, and particularly relates to a foam spraying fire-fighting device and method suitable for fire security and protection of chemical equipment. In order to solve the problems that an existing spraying fire-fighting device and a storage tank are poor in connecting mode effect, the mixing proportion of foam liquid and water cannot be changed according to needs, and raw materials and flames in the storage tank cannot be blocked, the following scheme is provided that the spraying fire-fighting device comprises a first frame body and a second frame body; the device comprises a first frame body and a second frame body, the first frame body and the second frame body are connected through a hinge shaft in a hinged mode, the first frame body and the second frame body are matched to be used for wrapping a storage tank, the first frame body and the second frame body are the same in structure, mixing boxes are fixed to the top of the first frame body and the top of the second frame body correspondingly, and liquid storage boxes are detachably installed on the two sides of the two mixing boxes correspondingly. The movement of the first frame body and the second frame body and the wrapping and fixing of the storage tank by the first frame body and the second frame body can be easily completed, the connection mode is simple, and the influence on the storage tank is avoided.

Description

Technical Field

[0001] The present invention relates to the field of chemical safety technology, and in particular to a foam spray fire-fighting device and method suitable for fire protection of chemical equipment. Background Art

[0002] Storage tanks are widely used in the chemical, petroleum and other industries and are important storage containers. Since storage tanks store flammable and explosive substances, once a fire occurs, it may cause huge property losses and casualties. Therefore, installing sprinkler fire-fighting devices around storage tanks can reduce the fire in time and ensure the safety of facilities and personnel.

[0003] The sprinkler fire-fighting device in the prior art still has the following shortcomings during use: 1. In the prior art, most of the sprinkler fire-fighting devices are fixed on the storage tank by welding, which makes it impossible to disassemble the sprinkler fire-fighting device from the storage tank, affecting the movement or use of the storage tank. In addition, in the process of welding the sprinkler fire-fighting device to the storage tank, the bearing capacity and stability of the storage tank are affected. 2. During the spraying process, the mixing ratio of foam liquid and water cannot be changed as needed. In addition, when a fire occurs in the storage tank, the raw materials and flames inside the storage tank are likely to splash around, which can easily expand the fire.

[0004] In view of the above problems, the present invention document proposes a foam spray fire-fighting device and method suitable for fire protection of chemical equipment. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the existing spray fire-fighting device and the connection method between the storage tank is not good, the mixing ratio of the foam liquid and water cannot be changed as needed, and the raw materials and flames inside the storage tank cannot be blocked, and a foam spray fire-fighting device and method suitable for fire safety of chemical equipment are proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A foam spray fire-fighting device suitable for fire protection of chemical equipment comprises a first frame and a second frame, wherein the first frame and the second frame are connected by a hinge shaft, and the first frame and the second frame cooperate to wrap a storage tank, the first frame and the second frame have the same structure, a mixing box is fixed on the top of each of the first frame and the second frame, and liquid storage boxes are detachably installed on both sides of the two mixing boxes, and the two liquid storage tanks are used to store foam liquid and water respectively; The two liquid storage tanks are each penetrated by a liquid injection pipe, one end of the two liquid injection pipes is fixedly extended into the mixing box, and is used to inject the foam liquid and water stored in the two liquid storage tanks into the mixing box, the mixing box is longitudinally rotatably connected with a stirring rod, and the top end of the stirring rod extends to the top of the mixing box, and is used to mix the foam liquid and water, and the bottom of the mixing box is fixed with a driving motor, and the output shaft of the driving motor is fixedly connected to the bottom end of the stirring rod; A buckle structure is provided between the first frame and the second frame, and is used to fix the first frame and the second frame together; Two shielding structures are respectively arranged on the first frame and the second frame, and are used to shield the raw materials and flames splashing from the inner wall of the storage tank; Two injection structures are respectively arranged on the top of the two mixing boxes and are used to inject the raw materials in the corresponding liquid storage tanks into the mixing boxes.

[0007] In a possible design, the first frame includes a top plate and a bottom plate, a support frame is fixed to the bottom of the top plate, and the bottom end of the support frame is fixed and passes through the bottom plate, the support frame is composed of a plurality of support rods, a plurality of first arc tubes are fixed and passed through the plurality of support rods from top to bottom, two adjacent first arc tubes are connected by a first connecting tube, a second arc tube is fixed to the inner wall of one side of the top plate, the second arc tube is connected to the first arc tube of the uppermost layer by a second connecting tube, a plurality of electromagnetic nozzles are fixed on one side of the second arc tube and the plurality of first arc tubes for spraying the foam mixture to the storage tank, a flame sensor is fixed to the bottom of the top plate, and universal wheels are fixed to the bottom of the plurality of support rods for easy movement of the support frame.

[0008] In a possible design, the shielding structure includes two connecting ears and a connecting buckle, the two connecting ears are respectively fixed on one side of the top plate and the bottom plate located in the first frame, the two connecting buckles are respectively fixed on one side of the top plate and the push rod located in the second frame, and adjacent connecting ears and connecting buckles cooperate with each other, and the same push rod is slidably passed through the two connecting ears, and connecting plates are fixed on the outer wall and the top of the push rod, and the connecting plates are located above adjacent connecting buckles, and pin rods are fixed at the bottom of the two connecting plates, and the bottom ends of the pin rods pass through adjacent connecting ears and connecting buckles for clamping and fixing the connecting ears and connecting buckles; the first frame and the second frame can be closed to wrap the storage tank, and the connecting buckle can extend into the connecting ears, and then the push rod and the connecting plate move downward under the action of gravity, and the pin rod is inserted into the connecting buckle to brake the connecting ears and the connecting buckle, thereby completing the fixation of the first frame and the second frame.

[0009] In a possible design, a plurality of threaded rods are slidably penetrated in the base plate, and an arc-shaped clamping plate is fixed at one end of the plurality of threaded rods close to the storage tank for clamping the storage tank, and a first nut block is threadedly sleeved on the outer wall of the plurality of threaded rods, and the first nut block is rotatably connected to the base plate for driving the threaded rod to move; by rotating the first nut block, the cooperation between the threaded rod and the first nut block drives the arc-shaped clamping plate to move inward, and the plurality of arc-shaped clamping plates can clamp the storage tank, thereby completing the fixation of the first frame, the second frame and the storage tank.

[0010] In one possible design, the shielding structure includes an arc-shaped connecting rod sliding on a side of a support frame away from the storage tank, a flame-retardant cloth is fixed to the top of the arc-shaped connecting rod, the top of the flame-retardant cloth is fixedly connected to the bottom of the top plate, the flame-retardant cloth is used to block the raw materials in the storage tank and the flame splashing, one side of the top plate is rotatably connected to an L-shaped plate, the top of one side of the L-shaped plate touches the bottom of the arc-shaped connecting rod, which is used to support the arc-shaped connecting rod, and a limiting strip is fixed to the top of one side of the L-shaped plate, which is used to limit the arc-shaped connecting rod; when a fire occurs, the L-shaped plate is pushed to rotate, the L-shaped plate releases the support for the arc-shaped connecting rod, the arc-shaped connecting rod moves downward under the action of gravity and drives the flame-retardant cloth to unfold, which can block the raw materials in the storage tank and the flame splashing.

[0011] The two cams are connected by a toothed wheel to the top of the two cams, and a check valve is provided in the two cams to allow the air in the two cams to flow in one direction. The two cams are connected by a toothed wheel to the top of the two cams, and a check valve is provided in the two cams to allow the air in the two cams to flow in one direction. The two cams are connected by a toothed wheel to the top of the two cams, and a check valve is provided in the two cams to allow the air in the two cams to flow in one direction. The two cams are connected by a toothed wheel to the top of the two cams, and a check valve is provided in the two cams to allow the air in the two cams to flow in one direction. The two cams are connected by a toothed wheel to the top of the two cams, and a check valve is provided in the two cams to allow the air in the two cams to flow in one direction. The two cams are connected by a toothed wheel to the top of the two cams, and a check valve is provided in the two cams to allow the air in the two cams to flow in one direction. The two cams are connected by a toothed wheel to the top of the two cams, and a check valve is provided in the two cams to allow the air in the two cams to flow in one direction. The two cams are connected by a toothed wheel to the top of the two cams. The two ends are fixedly connected with an air injection pipe, one end of the two air injection pipes is respectively connected to the corresponding liquid storage tank, which is used to inject air into the liquid storage tank to increase the internal air pressure; the bottom of the two mixing boxes is fixedly connected with a drain pipe, and the two drain pipes are respectively fixedly connected to the corresponding second connecting pipe, and the outer walls of the two drain pipes are provided with an electromagnetic valve; the driving motor drives the stirring rod to rotate, and the stirring rod drives the rotating shaft and the turntable to rotate through the synchronous wheel and synchronous belt, and the turntable drives the push rod and the piston plate to reciprocate through the cooperation of the pin and the first frame. At the same time, under the action of the one-way valve, the outside air can be injected into the liquid storage tank through the air injection pipe, and the corresponding foam liquid and water are injected into the mixing box through the injection pipe under the action of the air pressure in the liquid storage tank, and the stirring rod mixes the foam liquid and water, and injects them into the second arc tube and the first arc tube through the cooperation of the drain pipe and the second connecting pipe, and the electromagnetic nozzle can spray the foam mixture to the storage tank to complete the fire extinguishing operation.

[0012] In a possible design, the adjusting member includes a movable groove arranged at the top of the turntable, a screw rod is rotatably connected in the movable groove, a second nut block is fixedly sleeved on the outer wall of the screw rod for driving the screw rod to rotate, a nut plate threadably connected to the screw rod is slidably connected in the movable groove, and the pin is fixed on the top of the nut plate; the screw rod is driven to rotate by the second nut block, and the screw rod adjusts the distance moved by the pin in the movable groove through the nut plate, so that the distance of the reciprocating movement of the push rod can be controlled when the turntable rotates, thereby adjusting the amount of air injected into the liquid storage tank and completing the adjustment of the ratio of foam liquid and water injection.

[0013] In a possible design, the flame retardant cloth is a basalt fiber fireproof cloth.

[0014] In a possible design, two second frames are fixed to one side of the L-shaped plate close to the mixing box, and the same pushing rod is slidably fitted in the two second frames. A pull rod is fixed to the side of the push rod close to the mixing box, and one end of the pull rod is sealed and slidably extended into the adjacent mixing box and is rotatably connected to a connecting rod. A floating plate is slidably connected in the mixing box, and the top of the connecting rod is rotatably connected to the bottom of the floating plate. The floating plate floats up and drives the pull rod to move through the connecting rod; the liquid level of the mixed liquid in the mixing box rises, and the floating plate moves upward under the buoyancy of the mixed liquid, and the floating plate pulls the pull rod inward through the connecting rod, and the pull rod pulls the L-shaped plate to rotate through the cooperation of the pushing rod and the second frame, and the L-shaped plate releases the support of the arc-shaped connecting rod, and the arc-shaped connecting rod pulls the flame-retardant cloth downward, thereby blocking the raw materials and flames splashing from the storage tank.

[0015] In the present application, a method for using a foam spray fire-fighting device suitable for fire protection of chemical equipment comprises the following steps: S1, move the first frame and the second frame to the position of the storage tank, and the first frame and the second frame are closed to wrap the storage tank, and the connecting buckle can extend into the connecting ear, then the push rod and the connecting plate move downward under the action of gravity, the pin rod is inserted into the connecting buckle, the connecting ear and the connecting buckle are braked, and the first frame and the second frame are fixed, and then the first nut block is rotated, and the cooperation of the threaded rod and the first nut block drives the arc clamping plate to move inward, and multiple arc clamping plates can clamp the storage tank, thereby completing the fixation of the first frame, the second frame and the storage tank; S2. When a fire or leakage occurs in the storage tank, the flame sensors in the first frame and the second frame detect the occurrence of the fire, and the driving motor drives the stirring rod to rotate. The stirring rod drives the rotating shaft and the turntable to rotate through the synchronous wheel and the synchronous belt. The turntable drives the push rod and the piston plate to move back and forth through the cooperation of the pin and the first frame. At the same time, under the action of the one-way valve, the outside air can be injected into the liquid storage tank through the air injection pipe. Under the action of the air pressure in the liquid storage tank, the corresponding foam liquid and water are injected into the mixing box through the liquid injection pipe, and the stirring rod mixes the foam liquid and water, and injects them into the second arc tube and the first arc tube through the cooperation of the discharge pipe and the second connecting pipe. The electromagnetic nozzle can spray the foam mixture to the storage tank to complete the fire extinguishing operation; S3. In addition, in order to adjust the reciprocating distance of the piston plate according to the needs, the amount of air injected into the liquid storage tank is adjusted to complete the adjustment of the ratio of foam liquid and water injection; specifically, the second nut block drives the screw rod to rotate, and the screw rod adjusts the moving distance of the pin in the moving groove through the nut plate, so that the reciprocating distance of the push rod can be controlled when the turntable rotates; S4. When the foam liquid and water in the liquid storage tank enter the mixing box, the liquid level of the mixed liquid in the mixing box rises, and the float plate moves upward under the buoyancy of the mixed liquid. The float plate pulls the pull rod inward through the connecting rod, and the pull rod pulls the L-shaped plate to rotate through the cooperation of the push rod and the second frame. The L-shaped plate releases the support of the arc-shaped connecting rod, and the arc-shaped connecting rod pulls the flame-retardant cloth downward, thereby blocking the raw materials and flames splashing from the storage tank.

[0016] Beneficial effect: In the present invention, the top of the arc-shaped connecting rod and the bottom of the top plate are fixed with the same flame-retardant cloth, one side of the top plate is rotatably connected with an L-shaped plate, one side of the L-shaped plate is slidably matched with the same pushing rod through two second frames, one side of the pushing rod is fixed with a pull rod, and one end of the pull rod is rotatably connected with the floating plate through a connecting rod; the floating plate moves upward under the action of buoyancy, and pulls the push rod inward through the connecting rod, thereby driving the L-shaped plate to rotate and release the support of the arc-shaped connecting rod, and the arc-shaped connecting rod pulls the flame-retardant cloth downward, thereby being able to block the raw materials and flames splashing from the storage tank; In the present invention, a support frame is fixed at the bottom of the top plate, and a plurality of first arc tubes are fixed and penetrated from top to bottom in the plurality of support rods, and two adjacent first arc tubes are connected by a first connecting tube, and a second arc tube is fixed to an inner wall of one side of the top plate, and the second arc tube is connected to the first arc tube of the uppermost layer by a second connecting tube, and a plurality of electromagnetic nozzles are fixed on one side of the second arc tube and the plurality of first arc tubes, and universal wheels are fixed at the bottom of the plurality of support rods; the first frame and the second frame are moved to the storage tank position, and the first frame and the second frame are closed to wrap the storage tank, and the first frame and the second frame are fixed by the cooperation of the connecting ears, the connecting buckles and the pin rods, so as to complete the wrapping of the storage tank, so as to facilitate the simultaneous fire extinguishing of the storage tank by the plurality of electromagnetic nozzles in the later stage; In the present invention, a piston plate is sealingly and slidably connected in the gas injection cylinder, a one-way valve is arranged in the piston plate, a push rod is fixed on one side of the piston plate, a first frame is fixed on one end of the push rod, a pin is arranged on the top of the turntable and slidably cooperates with the first frame, and a gas injection pipe connected with the liquid storage tank is fixedly connected to one end of the gas injection cylinder; the turntable drives the push rod and the piston plate to reciprocate through the cooperation of the pin and the first frame, and the cooperation of the piston plate and the one-way valve injects the outside air into the liquid storage tank through the gas injection pipe, and the corresponding foam liquid and water are injected into the mixing box through the liquid injection pipe under the action of air pressure and mixed, so as to facilitate the completion of fire extinguishing operation in the later stage; In the present invention, a screw rod is rotatably connected in the movable groove, a nut plate threadably connected to the screw rod is slidably connected in the movable groove, and the pin is fixed on the top of the nut plate; the screw rod is driven to rotate by the second nut block, and the screw rod adjusts the moving distance of the pin column in the movable groove through the nut plate, so that the reciprocating distance of the push rod can be controlled when the turntable rotates, thereby adjusting the amount of air injected into the liquid storage tank, and completing the adjustment of the ratio of foam liquid and water injection.

[0017] In the present invention, the movement of the first frame and the second frame and the wrapping and fixing of the storage tank by the first frame and the second frame can be easily completed. The connection method is relatively simple to avoid affecting the storage tank. In addition, the mixing ratio of the foam liquid and water can be controlled as needed to achieve the best fire extinguishing effect. During the fire extinguishing process, the flame-retardant cloth can be used to block the raw materials inside the storage tank and the flames in the fire to prevent the fire from spreading. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided in Example 1 of the present invention; Figure 2 A schematic diagram of a three-dimensional explosion structure after deployment of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided in Example 1 of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of a first frame of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided in Example 1 of the present invention; Figure 4 A schematic diagram of the three-dimensional structure of a top plate, a bottom plate and a threaded rod of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided in Example 1 of the present invention; Figure 5 A schematic diagram of a three-dimensional explosion structure of a connection ear, a connection buckle and a connection plate of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided by Example 1 of the present invention; Figure 6 A schematic diagram of the three-dimensional structure of a first arc tube, a second arc tube and an electromagnetic nozzle of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided by Example 1 of the present invention; Figure 7 A schematic diagram of a three-dimensional exploded cross-sectional structure of a first arc-shaped tube, an arc-shaped connecting rod and an L-shaped plate of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided by Example 1 of the present invention; Figure 8 A schematic three-dimensional cross-sectional structure diagram of a liquid storage tank and a mixing tank of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided in Example 1 of the present invention; Fig. 9A schematic diagram of a three-dimensional cross-sectional structure of an air injection cylinder and a piston plate of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided in Example 1 of the present invention; Fig.10 A schematic diagram of a three-dimensional exploded structure of a first frame, a rotating disk and a nut plate of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided by Example 1 of the present invention; Fig.11 A schematic diagram of the three-dimensional structure of a top plate, an L-shaped plate and a second frame of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided by Example 2 of the present invention; Fig.12 This is a schematic three-dimensional cross-sectional structure diagram of a mixing box, a pull rod and a second frame of a foam spray fire-fighting device suitable for fire protection of chemical equipment provided by Example 2 of the present invention.

[0019] In the figure: 1, first frame; 2, second frame; 3, top plate; 4, bottom plate; 5, support rod; 6, universal wheel; 7, first arc tube; 8, second arc tube; 9, first connecting tube; 10, second connecting tube; 11, electromagnetic nozzle; 12, connecting ear; 13, connecting buckle; 14, push rod; 15, connecting plate; 16, pin rod; 17, threaded rod; 18, arc clamping plate; 19, first nut block; 20, L-shaped plate; 21, arc connecting rod; 22, flame retardant cloth; 23, limit strip; 24, Mixing box; 25. Stirring rod; 26. Driving motor; 27. Discharge pipe; 28. Solenoid valve; 29. ​​Liquid storage box; 30. Liquid injection pipe; 31. Air injection pipe; 32. Air injection cylinder; 33. Piston plate; 34. One-way valve; 35. Push rod; 36. First frame; 37. Rotating shaft; 38. Turntable; 39. Moving groove; 40. Screw rod; 41. Second nut block; 42. Nut plate; 43. Pin; 44. Second frame; 45. Push rod; 46. Pull rod; 47. Connecting rod; 48. Floating plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Example 1: Reference Figure 1-Figure 4, a foam spray fire fighting device, relates to the field of chemical safety technology, and its structure includes a first frame 1 and a second frame 2. The first frame 1 and the second frame 2 are connected by a hinge shaft hinge, so that the two can rotate relative to each other and close together to wrap the storage tank. The first frame 1 and the second frame 2 have the same structure, both including a top plate 3 and a bottom plate 4. A support frame is fixed at the bottom of the top plate 3, and the bottom end of the support frame is fixed through the bottom plate 4. The support frame is composed of a plurality of support rods 5, which not only provide structural support, but also serve as a conveying channel for the foam mixture. In the plurality of support rods 5, a plurality of first arc tubes 7 are fixed from top to bottom. Two adjacent first arc tubes 7 are connected by a first connecting pipe 9 to ensure that the foam mixture can flow between each first arc tube 7. A second arc tube 8 is fixed on the inner wall of one side of the top plate 3, and the second arc tube 8 is connected to the first arc tube 7 of the top layer by a second connecting pipe 10. In this way, the foam mixture can flow from the second arc tube 8 into the top first arc tube 7, and then be distributed to each first arc tube 7 below. Multiple electromagnetic nozzles 11 are fixed on one side of the second arc tube 8 and multiple first arc tubes 7. These electromagnetic nozzles 11 can be quickly opened after receiving a signal to spray the foam mixture onto the storage tank to extinguish the flame. A flame sensor is also fixed at the bottom of the top plate 3 to monitor the flame conditions around the storage tank in real time. Universal wheels 6 are fixed at the bottom of multiple support rods 5 to facilitate the movement and positioning of the entire support frame.

[0022] Reference Figure 1 and Figure 8 , a mixing box 24 is fixed on the top of the first frame 1 and the second frame 2. Liquid storage boxes 29 are detachably installed on both sides of the two mixing boxes 24. One of the liquid storage boxes 29 is used to store foam liquid, and the other is used to store water. Liquid injection pipes 30 are passed through the two liquid storage boxes 29, and one end of these liquid injection pipes 30 is fixedly extended into the mixing box 24. Through the liquid injection pipes 30, the foam liquid and water in the liquid storage boxes 29 can be injected into the mixing box 24 for mixing.

[0023] Reference Figure 8 A stirring rod 25 is connected to the mixing box 24 for longitudinal rotation, and the top end of the stirring rod 25 extends to the top of the mixing box 24. A driving motor 26 is fixed to the bottom of the mixing box 24, and the output shaft of the driving motor 26 is fixedly connected to the bottom end of the stirring rod 25. When the driving motor 26 is started, the stirring rod 25 is driven to rotate in the mixing box 24, so as to fully mix the foam liquid and water.

[0024] Reference Figure 2 and Figure 4 In order to fix the closed first frame 1 and the second frame 2, this embodiment also provides a buckle structure. This buckle structure can be set at a suitable position of the first frame 1 and the second frame 2, and when the two are closed, they can be tightly fixed together through the buckle structure.

[0025] Reference Figure 4 and Figure 5 The buckle structure includes two connecting ears 12 and a connecting buckle 13. The two connecting ears 12 are respectively fixed to one side of the top plate 3 and the bottom plate 4 in the first frame 1, and the two connecting buckles 13 are respectively fixed to one side of the top plate 3 and the push rod 14 in the second frame 2. Adjacent connecting ears 12 and connecting buckles 13 can cooperate with each other. The same push rod 14 is slidably passed through the two connecting ears 12, and the outer wall and the top of the push rod 14 are fixed with connecting plates 15. The connecting plates 15 are located above the adjacent connecting buckles 13, and the bottoms of the two connecting plates 15 are fixed with pins 16. When the first frame 1 and the second frame 2 are closed, the connecting buckle 13 can extend into the connecting ears 12. Then, under the action of gravity, the push rod 14 and the connecting plate 15 will move downward, and the pin 16 will be inserted into the connecting buckle 13, so that the connecting ears 12 and the connecting buckle 13 are clamped and fixed together, completing the fixation of the first frame 1 and the second frame 2.

[0026] Reference Figure 4 In the bottom plate 4, a plurality of threaded rods 17 are designed. These threaded rods 17 slide through the bottom plate 4 and can move freely inside it. An arc-shaped clamping plate 18 is fixed to one end of the threaded rod 17 close to the storage tank. These arc-shaped clamping plates 18 are designed to fit closely to the surface of the storage tank and effectively clamp the storage tank. On the outer walls of these threaded rods 17, first nut blocks 19 are threadedly sleeved. These first nut blocks 19 are rotatably connected to the bottom plate 4. When the first nut blocks 19 rotate, the threaded rods 17 are driven to move along their axial direction.

[0027] In actual operation, when it is necessary to fix the first frame 1, the second frame 2 and the storage tank, it is only necessary to rotate the first nut block 19. Due to the threaded fit between the threaded rod 17 and the first nut block 19, the threaded rod 17 will move inward, thereby driving the arc-shaped clamping plate 18 to move inward, until multiple arc-shaped clamping plates 18 are tightly fitted on the surface of the storage tank, thereby clamping and fixing the storage tank.

[0028] In addition, in order to shield the raw materials and flames splashing from the inner wall of the storage tank, shielding structures are respectively provided on the first frame 1 and the second frame 2 in this embodiment.

[0029] Reference Figure 7The shielding structure includes an arc-shaped connecting rod 21 that is slidably connected to the side of the support frame away from the storage tank. A flame-retardant cloth 22 is fixed to the top of the arc-shaped connecting rod 21, and the top of the flame-retardant cloth 22 is fixedly connected to the bottom of the top plate 3. The flame-retardant cloth 22 is designed to block the splashing of raw materials and flames in the storage tank when a fire occurs, thereby preventing the further spread of the fire. On one side of the top plate 3, an L-shaped plate 20 is rotatably connected, and the top of one side of the L-shaped plate 20 touches the bottom of the arc-shaped connecting rod 21, so that the L-shaped plate 20 can lift the arc-shaped connecting rod 21. At the same time, a limiting strip 23 is also fixed to the top of one side of the L-shaped plate 20, which is used to limit the arc-shaped connecting rod 21 to prevent it from shaking during use.

[0030] When a fire occurs, the L-shaped plate 20 can be pushed to rotate, so that the L-shaped plate 20 will release the lifting effect on the arc-shaped connecting rod 21. Under the action of gravity, the arc-shaped connecting rod 21 will move downward and drive the flame-retardant cloth 22 to unfold, thereby effectively blocking the raw materials in the storage tank and the splashing of flames.

[0031] In order to inject the raw materials in the liquid storage tank 29 into the mixing tank 24 , a material injection structure is also provided on the top of the two mixing tanks 24 in this embodiment.

[0032] Reference Figure 8 and Fig. 9 The design of the injection structure includes two rotating shafts 37 designed on the top of the mixing box 24, and the two rotating shafts 37 are connected to the stirring rod 25 through synchronous wheels and synchronous belts. A turntable 38 is fixed on the top of the rotating shaft 37. Two gas injection cylinders 32 are also fixed on the top of the mixing box 24 through a bracket, and the piston plates 33 are sealed and slidably connected in the two gas injection cylinders 32. A one-way valve 34 is provided in the piston plate 33, so that the air in the gas injection cylinder 32 can flow in one direction. A push rod 35 is fixed on the side of the piston plate 33 close to the turntable 38, and one end of the push rod 35 slides and extends to one side of the gas injection cylinder 32, and a first frame 36 is fixed. A pin 43 that slides with the first frame 36 is provided on the top of the turntable 38. When the turntable 38 rotates, the pin 43 is driven to rotate, thereby driving the first frame 36 to reciprocate. An adjusting member is also provided in the turntable 38 for adjusting the moving distance of the pin 43 on the turntable 38 , thereby adjusting the reciprocating distance of the first frame 36 .

[0033] Reference Figure 6 , Figure 8 and Fig. 9The ends of the two gas injection cylinders 32 that are away from each other are fixedly connected with gas injection pipes 31, and one end of the two gas injection pipes 31 is respectively connected with the corresponding liquid storage tank 29, which is used to inject air into the liquid storage tank 29 to increase the internal air pressure. The bottoms of the two mixing boxes 24 are fixedly connected with drainage pipes 27, and the two drainage pipes 27 are respectively fixedly connected with the corresponding second connecting pipes 10. On the outer wall of the drainage pipe 27, a solenoid valve 28 is provided to control the opening and closing of the drainage pipe 27.

[0034] In actual operation, when it is necessary to spray foam to extinguish the fire in the storage tank, the motor 26 can be driven to operate, thereby driving the stirring rod 25 to rotate. The stirring rod 25 drives the rotating shaft 37 and the turntable 38 to rotate through the synchronous wheel and the synchronous belt. The turntable 38 drives the push rod 35 and the piston plate 33 to reciprocate through the cooperation of the pin 43 and the first frame 36. At the same time, under the action of the one-way valve 34, the outside air can be injected into the liquid storage tank 29 through the air injection pipe 31. Under the action of the air pressure in the liquid storage tank 29, the corresponding foam liquid and water are injected into the mixing box 24 through the injection pipe 30. Then, the stirring rod 25 fully mixes the foam liquid and water, and injects them into the second arc tube 8 and the first arc tube 7 through the cooperation of the discharge pipe 27 and the second connecting pipe 10. Finally, the electromagnetic nozzle 11 sprays the foam mixture to the storage tank to complete the fire extinguishing operation.

[0035] Reference Fig. 9 and Fig.10 The adjusting member includes a movable groove 39 provided at the top of the rotating disk 38. Inside the movable groove 39, a screw rod 40 is installed by a rotational connection. In particular, on the outer wall of the screw rod 40, we have fixedly sleeved a second nut block 41, and the function of this second nut block 41 is to drive the screw rod 40 to rotate. Inside the movable groove 39, we also have a nut plate 42 slidably connected, and this nut plate 42 is threadedly connected to the screw rod 40. When the screw rod 40 rotates, the nut plate 42 will move along the axial direction of the screw rod 40. And at the top of the nut plate 42, we have fixed a pin 43.

[0036] In actual operation, when we drive the screw rod 40 to rotate through the second nut block 41, the rotation of the screw rod 40 will be converted into a linear movement of the nut plate 42 in the moving groove 39. Since the pin 43 is fixed to the top of the nut plate 42, the pin 43 will also move with it. In this way, when the turntable 38 rotates, the moving distance of the pin 43 in the moving groove 39 can be controlled by adjusting the rotation of the screw rod 40, thereby controlling the reciprocating movement distance of the push rod 35. This design can accurately adjust the amount of air injected into the liquid storage tank 29, thereby completing the precise adjustment of the injection ratio of foam liquid and water. Thereby, a foam spray fire-fighting device that can accurately adjust the injection ratio of foam liquid and water and has excellent flame retardant properties is realized. This device has broad application prospects in fire safety of chemical equipment.

[0037] Reference Figure 7 In addition, the flame retardant fabric 22 we selected is basalt fiber fireproof fabric, which has excellent flame retardant properties and can maintain structural integrity and stability in high temperature environments.

[0038] Through the above design, the foam spray fire-fighting device can effectively protect chemical equipment from fire, improve fire-fighting efficiency, and reduce fire losses.

[0039] Example 2: Reference Fig.11 and Fig.12 , improved on the basis of Example 1: two second frames 44 are fixed on the side of the L-shaped plate 20 close to the mixing box 24. A push rod 45 is slidably fitted inside the two second frames 44. A pull rod 46 is fixed on the side of the push rod 45 close to the mixing box 24, and one end of the pull rod 46 extends into the adjacent mixing box 24 in a sealed sliding manner and is rotatably connected to a connecting rod 47. Inside the mixing box 24, we slidably connect a floating plate 48, and the top of the connecting rod 47 is rotatably connected to the bottom of the floating plate 48.

[0040] When the liquid level of the mixed liquid in the mixing box 24 rises, the floating plate 48 will move upward under the buoyancy of the mixed liquid. The upward movement of the floating plate 48 will drive the pull rod 46 to move through the connecting rod 47. The movement of the pull rod 46 will pull the L-shaped plate 20 to rotate through the cooperation of the push rod 45 and the second frame 44. When the L-shaped plate 20 rotates, it will release the lifting effect on the arc-shaped connecting rod 21, and the arc-shaped connecting rod 21 will pull the flame-retardant cloth 22 downward. In this way, the flame-retardant cloth 22 can effectively block the raw materials and flames splashing out of the storage tank, preventing the further spread of the fire.

[0041] A method for using a foam spray fire-fighting device suitable for fire protection of chemical equipment comprises the following steps: S1, move the first frame 1 and the second frame 2 to the position of the storage tank, and the first frame 1 and the second frame 2 are closed to wrap the storage tank, and the connecting buckle 13 can extend into the connecting ear 12, then the push rod 14 and the connecting plate 15 move downward under the action of gravity, and the pin 16 is inserted into the connecting buckle 13 to brake the connecting ear 12 and the connecting buckle 13 to complete the fixation of the first frame 1 and the second frame 2, and then rotate the first nut block 19, the threaded rod 17 cooperates with the first nut block 19 to drive the arc clamping plate 18 to move inward, and multiple arc clamping plates 18 can clamp the storage tank, thereby completing the fixation of the first frame 1, the second frame 2 and the storage tank; S2. When a fire or leakage occurs in the storage tank, the flame sensors in the first frame 1 and the second frame 2 detect the occurrence of a fire, and the driving motor 26 drives the stirring rod 25 to rotate. The stirring rod 25 drives the rotating shaft 37 and the turntable 38 to rotate through the synchronous wheel and the synchronous belt. The turntable 38 drives the push rod 35 and the piston plate 33 to move back and forth through the cooperation of the pin 43 and the first frame 36. At the same time, under the action of the one-way valve 34, the external air can be injected into the liquid storage tank 29 through the air injection pipe 31. Under the action of the air pressure in the liquid storage tank 29, the corresponding foam liquid and water are injected into the mixing box 24 through the injection pipe 30, and the stirring rod 25 mixes the foam liquid and water, and injects them into the second arc tube 8 and the first arc tube 7 through the cooperation of the drain pipe 27 and the second connecting pipe 10. The electromagnetic nozzle 11 can spray the foam mixture to the storage tank to complete the fire extinguishing operation; S3. In addition, in order to adjust the reciprocating distance of the piston plate 33 as needed, the amount of air injected into the liquid storage tank 29 is adjusted to complete the adjustment of the ratio of the foam liquid and the water injected; specifically, the second nut block 41 drives the screw rod 40 to rotate, and the screw rod 40 adjusts the moving distance of the pin 43 in the moving groove 39 through the nut plate 42, so that the reciprocating distance of the push rod 35 can be controlled when the turntable 38 rotates; S4. When the foam liquid and water in the liquid storage tank 29 enter the mixing box 24, the liquid level of the mixed liquid in the mixing box 24 rises, and the float plate 48 moves upward under the buoyancy of the mixed liquid. The float plate 48 pulls the pull rod 46 inward through the connecting rod 47. The pull rod 46 pulls the L-shaped plate 20 to rotate through the push rod 45 and the cooperation with the second frame 44. The L-shaped plate 20 releases the support of the arc-shaped connecting rod 21, and the arc-shaped connecting rod 21 pulls the flame-retardant cloth 22 downward, thereby blocking the raw materials and flames splashing out of the storage tank.

[0042] However, as is well known to those skilled in the art, the working principles and wiring methods of the drive motor 26, electromagnetic nozzle 11 and electromagnetic valve 28 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A foam spray fire-fighting device suitable for fire protection of chemical equipment, characterized in that: The invention comprises a first frame (1) and a second frame (2), wherein the first frame (1) and the second frame (2) are connected via a hinge shaft, and the first frame (1) and the second frame (2) cooperate to wrap a storage tank, the first frame (1) and the second frame (2) have the same structure, a mixing box (24) is fixed on the top of each of the first frame (1) and the second frame (2), and liquid storage boxes (29) are detachably mounted on both sides of the two mixing boxes (24), and the two liquid storage boxes (29) are used to store foam liquid and water respectively; A buckle structure, arranged between the first frame (1) and the second frame (2), and used for fixing the first frame (1) and the second frame (2) when they are closed; Two shielding structures are respectively arranged on the first frame (1) and the second frame (2) and are used to shield the raw materials and flames splashing from the inner wall of the storage tank; Two material injection structures are respectively arranged on the tops of the two mixing boxes (24) and are used to inject the raw materials in the corresponding liquid storage boxes (29) into the mixing boxes (24).

2. A foam spray fire-fighting device suitable for fire protection of chemical equipment according to claim 1, characterized in that: The first frame (1) comprises a top plate (3) and a bottom plate (4); a support frame is fixed at the bottom of the top plate (3), and the bottom end of the support frame is fixedly passed through the bottom plate (4); the support frame is composed of a plurality of support rods (5); a plurality of first arc tubes (7) are fixedly passed through the plurality of support rods (5) from top to bottom; two adjacent first arc tubes (7) are connected via a first connecting tube (9); a second arc tube (8) is fixed to the inner wall of one side of the top plate (3); the second arc tube (8) is connected to the first arc tube (7) at the top layer via a second connecting tube (10); a plurality of electromagnetic nozzles (11) are fixed to one side of the second arc tube (8) and the plurality of first arc tubes (7) for spraying the foam mixture onto the storage tank; a flame sensor is fixed to the bottom of the top plate (3); and universal wheels (6) are fixed to the bottom of the plurality of support rods (5).

3. A foam spray fire-fighting device suitable for fire protection of chemical equipment according to claim 2, characterized in that: The shielding structure comprises two connecting ears (12) and a connecting buckle (13). The two connecting ears (12) are respectively fixed to one side of a top plate (3) and a bottom plate (4) located in the first frame (1). The two connecting buckles (13) are respectively fixed to one side of a top plate (3) and a push rod (14) located in the second frame (2). The adjacent connecting ears (12) and connecting buckles (13) cooperate with each other. A same push rod (14) is slidably penetrated in the two connecting ears (12). The outer wall and the top of the push rod (14) are both fixed with connecting plates (15). The connecting plates (15) are located above the adjacent connecting buckles (13). The bottoms of the two connecting plates (15) are both fixed with pin rods (16). The bottom ends of the pin rods (16) penetrate the adjacent connecting ears (12) and the connecting buckles (13) so as to clamp and fix the connecting ears (12) and the connecting buckles (13).

4. A foam spray fire-fighting device suitable for fire protection of chemical equipment according to claim 3, characterized in that: A plurality of threaded rods (17) are slidably inserted into the bottom plate (4), and an arc-shaped clamping plate (18) is fixed to one end of the plurality of threaded rods (17) close to the storage tank for clamping the storage tank. A first nut block (19) is threadedly sleeved on the outer wall of the plurality of threaded rods (17), and the first nut block (19) is rotatably connected to the bottom plate (4) for driving the threaded rods (17) to move.

5. A foam spray fire-fighting device suitable for fire protection of chemical equipment according to claim 4, characterized in that: The shielding structure comprises an arc-shaped connecting rod (21) sliding on a side of a support frame away from the storage tank, a flame-retardant cloth (22) being fixed on the top of the arc-shaped connecting rod (21), the top of the flame-retardant cloth (22) being fixedly connected to the bottom of a top plate (3), the flame-retardant cloth (22) being used to block raw materials in the storage tank and flame splashing, an L-shaped plate (20) being rotatably connected to one side of the top plate (3), the top of one side of the L-shaped plate (20) being in contact with the bottom of the arc-shaped connecting rod (21) for lifting the arc-shaped connecting rod (21), and a limiting strip (23) being fixed on the top of one side of the L-shaped plate (20) for limiting the arc-shaped connecting rod (21).

6. A foam spray fire-fighting device suitable for fire protection of chemical equipment according to claim 5, characterized in that: The injection structure comprises two rotating shafts (37) rotating on the top of the mixing box (24); the two liquid storage boxes (29) are each penetrated by an injection pipe (30); one end of the two injection pipes (30) is fixedly extended into the mixing box (24) for injecting the foam liquid and water stored in the two liquid storage boxes (29) into the mixing box (24); a stirring rod (25) is longitudinally rotatably connected to the mixing box (24); the top end of the stirring rod (25) extends to the top of the mixing box (24) for mixing the foam liquid and water; a driving motor (26) is fixedly provided at the bottom of the mixing box (24); and the output shaft of the driving motor (26) is fixedly connected to the bottom end of the stirring rod (25); The two rotating shafts (37) are connected to the stirring rod (25) through a synchronous wheel and a synchronous belt transmission. A turntable (38) is fixed on the top of the two rotating shafts (37). Two gas injection cylinders (32) are fixed on the top of the mixing box (24) through a bracket. The two gas injection cylinders (32) are sealed and slidably connected with piston plates (33). Both piston plates (33) are provided with one-way valves (34) for allowing the air in the gas injection cylinders (32) to flow in one direction. Push rods (35) are fixed on one side of the two piston plates (33) close to the turntable (38). One end of the two push rods (35) slides and extends to one side of the gas injection cylinder (32) and is fixed with a first frame (36). The tops of the two turntables (38) are provided with a The pin (43) is driven by the turntable (38) to rotate so as to drive the first frame (36) to reciprocate. The turntable (38) is provided with an adjusting member for adjusting the moving distance of the pin (43) on the turntable (38), thereby adjusting the reciprocating distance of the first frame (36). The ends of the two gas injection cylinders (32) that are away from each other are fixedly connected to a gas injection pipe (31). One end of the two gas injection pipes (31) is respectively connected to a corresponding liquid storage tank (29) for injecting air into the liquid storage tank (29) to increase the internal air pressure. The bottoms of the two mixing boxes (24) are fixedly connected to a drainage pipe (27). The two drainage pipes (27) are respectively fixedly connected to a corresponding second connecting pipe (10). The outer walls of the two drainage pipes (27) are provided with a solenoid valve (28).

7. A foam spray fire fighting device suitable for fire protection of chemical equipment according to claim 6, characterized in that: The adjusting member comprises a movable groove (39) arranged at the top of the rotating disk (38), a screw rod (40) being rotatably connected in the movable groove (39), a second nut block (41) being fixedly sleeved on the outer wall of the screw rod (40) for driving the screw rod (40) to rotate, a nut plate (42) being threadably connected to the screw rod (40) in the movable groove (39), and the pin column (43) being fixed on the top of the nut plate (42).

8. A foam spray fire-fighting device suitable for fire protection of chemical equipment according to claim 7, characterized in that: The flame retardant cloth (22) is a basalt fiber fireproof cloth.

9. A foam spray fire fighting device suitable for fire protection of chemical equipment according to claim 8, characterized in that: Two second frames (44) are fixed on one side of the L-shaped plate (20) close to the mixing box (24), and a same pushing rod (45) is slidably fitted inside the two second frames (44). A pull rod (46) is fixed on one side of the pushing rod (45) close to the mixing box (24). One end of the pull rod (46) is sealed and slidably extended into the adjacent mixing box (24) and is rotatably connected to a connecting rod (47). A floating plate (48) is slidably connected inside the mixing box (24), and the top of the connecting rod (47) is rotatably connected to the bottom of the floating plate (48). The floating plate (48) floats upward and drives the pull rod (46) to move via the connecting rod (47).

10. A method for using a foam sprinkler fire fighting device suitable for fire protection of chemical equipment, applied to the foam sprinkler fire fighting device suitable for fire protection of chemical equipment as claimed in claim 9, characterized in that: The following steps are involved: S1. Move the first frame (1) and the second frame (2) to the position of the storage tank, and the first frame (1) and the second frame (2) can be closed to wrap the storage tank, and the connecting buckle (13) can extend into the connecting ear (12), then the push rod (14) and the connecting plate (15) move downward under the action of gravity, and the pin rod (16) is inserted into the connecting buckle (13) to brake the connecting ear (12) and the connecting buckle (13), thereby completing the fixation of the first frame (1) and the second frame (2), and then rotating the first nut block (19), the threaded rod (17) and the first nut block (19) cooperate to drive the arc clamping plate (18) to move inward, and the multiple arc clamping plates (18) can clamp the storage tank, thereby completing the fixation of the first frame (1), the second frame (2) and the storage tank; S2. When a fire or leakage occurs in the storage tank, the flame sensors in the first frame (1) and the second frame (2) detect the occurrence of the fire, and the drive motor (26) is operated to drive the stirring rod (25) to rotate. The stirring rod (25) drives the rotating shaft (37) and the rotating disk (38) to rotate through the synchronous wheel and synchronous belt. The rotating disk (38) drives the push rod (35) and the piston plate (33) to reciprocate through the cooperation of the pin (43) and the first frame (36). At the same time, the one-way valve (34) is operated. The external air can be injected into the liquid storage tank (29) through the air injection pipe (31), and the corresponding foam liquid and water are injected into the mixing box (24) through the liquid injection pipe (30) under the action of the air pressure in the liquid storage tank (29), and the stirring rod (25) mixes the foam liquid and water, and injects them into the second arc tube (8) and the first arc tube (7) through the cooperation of the discharge pipe (27) and the second connecting pipe (10), and the electromagnetic nozzle (11) can spray the foam mixed liquid toward the storage tank to complete the fire extinguishing operation; S3. In addition, in order to adjust the reciprocating distance of the piston plate (33) as needed, the amount of air injected into the liquid storage tank (29) is adjusted to complete the adjustment of the ratio of the foam liquid and the water injected; specifically, the second nut block (41) drives the screw rod (40) to rotate, and the screw rod (40) adjusts the moving distance of the pin (43) in the moving groove (39) through the nut plate (42), so that the reciprocating distance of the push rod (35) can be controlled when the rotating disk (38) rotates; S4. When the foam liquid and water in the liquid storage tank (29) enter the mixing box (24), the liquid level of the mixed liquid in the mixing box (24) rises, and the floating plate (48) moves upward under the buoyancy of the mixed liquid. The floating plate (48) pulls the pull rod (46) inward through the connecting rod (47). The pull rod (46) pulls the L-shaped plate (20) to rotate through the cooperation of the push rod (45) and the second frame (44). The L-shaped plate (20) releases the support of the arc-shaped connecting rod (21), and the arc-shaped connecting rod (21) pulls the flame-retardant cloth (22) downward, thereby blocking the raw materials and flames splashing out of the storage tank.

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