Positive and negative pressure smoke exhaust equipment for fire fighting and extinguishment
By designing fire-fighting positive and negative pressure smoke exhaust equipment, intercepting fences and mobile drive components are used to solve the problem of insufficient cleaning of negative pressure smoke exhaust foreign matter in the prior art, and the normal progress of negative pressure smoke exhaust and the convenience of smoke exhaust equipment are achieved.
Patent Information
- Application Number
- CN202421504855.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The mobile fume exhaust machines of existing fire-fighting equipment generally only have the function of positive pressure air supply, and cannot achieve negative pressure air suction and smoke exhaust, and lack a mechanism to clean foreign matters during the negative pressure smoke exhaust process, which leads to the smoke exhaust window being easily blocked, affecting the normal progress of negative pressure smoke exhaust.
A fire-fighting and fire-fighting positive and negative pressure smoke exhaust equipment is designed, including a smoke exhaust cart, a positive and negative pressure smoke exhaust mechanism, an intercepting mechanism and a miscellaneous cleaning mechanism. By setting an intercepting fence and moving driving components on the top of the smoke exhaust cart on the front side of the smoke exhaust window, intercepting and cleaning of foreign objects during the negative pressure smoke exhaust process can ensure the smooth flow of the smoke exhaust window.
The normal operation of negative pressure smoke exhaust is achieved, the problem of foreign objects is avoided, the convenience and reliability of smoke exhaust equipment is improved, and effective smoke exhaust in fire protection is ensured.
Smart Images
Figure CN222799215U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire smoke exhaust, in particular to a fire extinguishing positive and negative pressure smoke exhaust device. Background Art
[0002] The fire-fighting equipment we are currently using - mobile smoke exhausters, use internal combustion engines to output power, and then directly install a group of blades on the power output shaft. The rotation of the internal combustion engine is used to drive the rotation of the blades, and the connected air ducts are used to supply positive pressure air to spaces or rooms with heavy smoke to achieve the purpose of smoke exhaust.
[0003] Positive pressure smoke exhaust refers to the use of fans to send fresh air into the building to form a positive pressure system, thereby discharging the indoor dirty air. The principle is to form a state of higher pressure inside the building than outside, and discharge the smoke to a lower pressure area. Negative pressure smoke exhaust is to form a lower pressure inside the building to exhaust indoor air. The principle is to form a state of lower pressure inside the building than outside, and discharge the smoke to a negative pressure area. The advantages of the negative pressure smoke exhaust system are that the system structure is simple and easy to implement, and harmful gases such as indoor smoke can be quickly discharged to the outside, ensuring people's life safety. In addition, negative pressure smoke exhaust can also effectively avoid backdrafts and flashovers, and will not aggravate the development of fires and the spread of smoke inside the building.
[0004] The mobile smoke exhaust machines in the prior art generally only have the positive pressure air supply function, and cannot realize the negative pressure air suction and smoke exhaust. Some devices with positive and negative pressure smoke exhaust lack the mechanism to clean the foreign matter adsorbed on the smoke exhaust window during the negative pressure smoke exhaust process, which makes the smoke exhaust window easy to be blocked and affects the negative pressure smoke exhaust. Therefore, the utility model proposes a fire extinguishing positive and negative pressure smoke exhaust device to solve the shortcomings of the prior art. Utility Model Content
[0005] In view of the above problems, the purpose of the utility model is to provide a positive and negative pressure smoke exhaust equipment for fire fighting. The switching between positive and negative pressure smoke exhaust is simple, and the smoke exhaust mode can be switched only by operating the control valve, which is highly convenient. By installing an intercepting fence on the top of the smoke exhaust cart in front of the smoke exhaust window, the intercepting fence can be used to block foreign matter adsorbed during the negative pressure smoke exhaust process, thereby effectively ensuring the normal operation of negative pressure smoke exhaust.
[0006] The utility model relates to fire-fighting positive and negative pressure smoke exhaust equipment.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A fire-fighting positive and negative pressure smoke exhaust device, comprising a smoke exhaust cart, a positive and negative pressure smoke exhaust mechanism, an interception mechanism and a debris clearing mechanism, wherein a positive and negative pressure smoke exhaust mechanism is arranged in the middle of the top of the smoke exhaust cart, and the positive and negative pressure smoke exhaust mechanism comprises an equipment box, a smoke exhaust pipeline, a positive pressure smoke exhaust fan and a negative pressure smoke exhaust fan, a smoke exhaust window is arranged on the front of the equipment box, the smoke exhaust pipeline, the positive pressure smoke exhaust fan and the negative pressure smoke exhaust fan are all arranged inside the equipment box, and the smoke exhaust pipeline is connected to the smoke exhaust window, and the positive pressure smoke exhaust fan and the negative pressure smoke exhaust fan are both connected to the smoke exhaust pipeline, an interception mechanism is provided on the front side of the top of the smoke exhaust cart, the interception mechanism includes a mobile driving component and an interception fence, a mobile driving component is provided on the front side of the cavity inside the smoke exhaust cart, a mobile long groove is provided on the front side of the top of the smoke exhaust cart, the interception fence is provided with a connecting block, the connecting block is slidably connected to the mobile long groove, and the lower end of the connecting block is connected to the mobile driving component, and a cleaning mechanism is provided on the top of the smoke exhaust cart on both sides of the positive and negative pressure smoke exhaust mechanism.
[0009] Further improvements are: the smoke exhaust pipeline includes a butt-joint pipe, a tee pipe and a control valve, the butt-joint pipe is connected to the smoke exhaust window, the first interface on the tee pipe is connected to one end of the butt-joint pipe, the second interface on the tee pipe is connected to a positive pressure smoke exhaust fan, the third interface on the tee pipe is connected to a negative pressure smoke exhaust fan, and a control valve is provided on the tee pipe, and the control valve passes through the top of the equipment box.
[0010] A further improvement is that the intercepting fence includes a bottom crossbeam, a first straight rod, a second straight rod and an inclined rod, a first straight rod is provided on the top of the bottom crossbeam, a plurality of groups of the first straight rods are provided at equal intervals, an inclined rod is provided at an angle on the upper ends of the plurality of groups of the first straight rods, and a second straight rod is provided at the upper end of the inclined rod.
[0011] A further improvement is that a guide wheel groove is provided above the front side of the equipment box body, a roller is rotatably provided on the top of the second straight rod, and the roller is rollingly connected to the guide wheel groove.
[0012] A further improvement is that the debris clearing mechanism includes a column, a pushing cylinder, a mounting beam and a debris clearing vertical rod, the column is mounted with a pushing cylinder, the output end of the pushing cylinder is provided with a mounting beam, one side of the mounting beam is provided with a debris clearing vertical rod, and the debris clearing vertical rod is provided in multiple groups.
[0013] A further improvement is that the mobile driving component includes a linear screw and a servo motor, the front side of the cavity inside the smoke exhaust cart is rotatably provided with a linear screw, the connecting block is threadedly connected to the linear screw, and the linear screw is driven by the servo motor.
[0014] The beneficial effects of the utility model are as follows: the utility model can use the interception fence to block foreign matter adsorbed during the negative pressure smoke exhaust process by the interception fence on the top of the smoke exhaust cart in front of the smoke exhaust window, so as to prevent foreign matter from clogging the smoke exhaust window and affecting the normal operation of the negative pressure smoke exhaust. The arranged moving driving component can drive the interception fence to move, so that the foreign matter intercepted on the interception fence is moved to the position of the cleaning mechanism and cleaned by the cleaning mechanism, so that the interception fence is not blocked by foreign matter and affects the normal negative pressure smoke exhaust, and the normal operation of the negative pressure smoke exhaust can be effectively ensured.
[0015] The fire-fighting positive and negative pressure smoke exhaust equipment of the utility model has simple switching between positive and negative pressure smoke exhaust, and the smoke exhaust mode can be switched only by operating the control valve, which is highly convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;
[0017] Figure 2 This is a three-dimensional schematic diagram of the appearance structure of the positive and negative pressure smoke exhaust mechanism of the utility model;
[0018] Figure 3 This is a three-dimensional schematic diagram of the structure of the debris removal mechanism of the utility model;
[0019] Figure 4 This is a three-dimensional schematic diagram of the structure of the mobile driving component of the utility model;
[0020] Figure 5 This is a three-dimensional schematic diagram of the interception fence structure of the utility model;
[0021] Figure 6 It is a top view schematic diagram of the internal structure of the positive and negative pressure smoke exhaust mechanism of the utility model.
[0022] Among them: 1. Smoke exhaust trolley; 2. Positive and negative pressure smoke exhaust mechanism; 201. Equipment box; 202. Positive pressure smoke exhaust fan; 203. Negative pressure smoke exhaust fan; 204. Smoke exhaust window; 205. Butt pipe; 206. Tee pipe; 207. Control valve; 3. Debris cleaning mechanism; 301. Column; 302. Push cylinder; 303. Mounting beam; 304. Debris cleaning vertical rod; 4. Mobile driving component; 401. Linear screw; 402. Servo motor; 5. Intercept fence; 501. Bottom beam; 502. First straight rod; 503. Second straight rod; 504. Oblique rod; 6. Mobile long slot; 7. Connecting block; 8. Guide wheel slot; 9. Roller. DETAILED DESCRIPTION
[0023] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.
[0024] according to Figure 1-6 As shown, this embodiment proposes a fire-fighting positive and negative pressure smoke exhaust equipment, including a smoke exhaust cart 1, a positive and negative pressure smoke exhaust mechanism 2, an interception mechanism and a debris removal mechanism 3. The positive and negative pressure smoke exhaust mechanism 2 is arranged in the middle of the top of the smoke exhaust cart 1. The positive and negative pressure smoke exhaust mechanism 2 includes an equipment box 201, a smoke exhaust pipeline, a positive pressure smoke exhaust fan 202 and a negative pressure smoke exhaust fan 203. A smoke exhaust window 204 is arranged on the front of the equipment box 201. The smoke exhaust pipeline, the positive pressure smoke exhaust fan 202 and the negative pressure smoke exhaust fan 203 are all arranged inside the equipment box 201, and the smoke exhaust pipeline is connected to the smoke exhaust window 204. 4. The positive-pressure smoke exhaust fan 202 and the negative-pressure smoke exhaust fan 203 are both connected to the smoke exhaust pipeline. An interception mechanism is provided on the front side of the top of the smoke exhaust cart 1. The interception mechanism includes a movable driving component 4 and an interception fence 5. A movable driving component 4 is provided on the front side of the cavity inside the smoke exhaust cart 1. A movable long groove 6 is provided on the front side of the top of the smoke exhaust cart 1. The interception fence 5 is provided with a connecting block 7. The connecting block 7 is slidably connected to the movable long groove 6, and the lower end of the connecting block 7 is connected to the movable driving component 4. A cleaning mechanism 3 is provided on the top of the smoke exhaust cart 1 on both sides of the positive and negative pressure smoke exhaust mechanism 2.
[0025] When the fire-fighting positive and negative pressure smoke exhaust equipment of the present invention is used, the control valve 207 is used to control the connection between the butt joint 205 and the second interface on the three-way pipe 206, and the channel between the third interface on the three-way pipe 206 and the negative pressure smoke exhaust fan 203 is closed. At this time, the positive pressure smoke exhaust fan 202 can be used for positive pressure smoke exhaust. The positive pressure smoke exhaust process will not absorb foreign matter onto the smoke exhaust window 204, so that the interception mechanism and the cleaning mechanism 3 do not need to work. When it is necessary to switch to the negative pressure smoke exhaust mode, the control valve 207 is used to control the connection between the butt joint 205 and the third interface on the three-way pipe 206, and the three-way pipe is closed. The channel between the second interface on 206 and the positive pressure smoke exhaust fan 202 is closed, and the negative pressure smoke exhaust fan 203 can be used for negative pressure smoke exhaust. The negative pressure smoke exhaust process intercepts foreign matter through the interception fence 5. When foreign matter accumulates on the interception fence 5 located at the smoke exhaust window 204, the mobile driving component 4 is used to control the movement of the interception fence 5. At this time, the clean position on the interception fence 5 moves to the position of the smoke exhaust window 204 to continue the foreign matter interception operation, and the part of the interception fence 5 with foreign matter accumulated moves to the position of the cleaning mechanism 3. By starting the cleaning mechanism 3, the foreign matter accumulated on the interception fence 5 can be pushed to make it fall.
[0026] The smoke exhaust pipeline includes a butt joint pipe 205, a three-way pipe 206 and a control valve 207. The butt joint pipe 205 is connected to the smoke exhaust window 204. The first interface on the three-way pipe 206 is connected to one end of the butt joint pipe 205. The second interface on the three-way pipe 206 is connected to the positive pressure smoke exhaust fan 202. The third interface on the three-way pipe 206 is connected to the negative pressure smoke exhaust fan 203. The three-way pipe 206 is provided with a control valve 207, and the control valve 207 passes through the top of the equipment box 201. The control valve 207 of the utility model is provided with three through holes corresponding to the on-off control of the three interfaces.
[0027] The interception fence 5 includes a bottom crossbeam 501, a first straight rod 502, a second straight rod 503 and an inclined rod 504. The first straight rod 502 is arranged on the top of the bottom crossbeam 501. A plurality of groups of the first straight rods 502 are arranged at equal intervals. The inclined rods 504 are inclinedly arranged on the upper ends of the plurality of groups of the first straight rods 502. The upper ends of the inclined rods 504 are provided with second straight rods 503. By configuring the interception fence 5 to consist of the bottom crossbeam 501, the first straight rod 502, the second straight rod 503 and the inclined rod 504, the inclination of the inclined rod 504 can make the visible foreign matter slide down and fall under the action of gravity.
[0028] A guide wheel groove 8 is provided on the front of the equipment box 201, and a roller 9 is rotatably provided on the top of the second straight rod 503, and the roller 9 is rollingly connected with the guide wheel groove 8. By arranging the roller 9 and the guide wheel groove 8 to cooperate, the movement stability and smoothness of the interception fence 5 can be improved.
[0029] The debris clearing mechanism 3 includes a column 301, a push cylinder 302, a mounting beam 303 and a debris clearing vertical rod 304. The push cylinder 302 is mounted on the column 301. The output end of the push cylinder 302 is provided with a mounting beam 303. One side of the mounting beam 303 is provided with a debris clearing vertical rod 304. There are multiple groups of debris clearing vertical rods 304. When the debris clearing mechanism 3 is needed to clean up foreign objects that have accumulated on the interception fence 5 and have not automatically fallen, the push cylinder 302 is controlled to extend so that the debris clearing vertical rod 304 enters between the adjacent rods formed by the combination of the first straight rod 502, the second straight rod 503 and the oblique rod 504, so as to push the foreign objects down.
[0030] The mobile driving component 4 includes a linear screw 401 and a servo motor 402. The front side of the cavity inside the smoke exhaust cart 1 is rotatably provided with a linear screw 401. The connecting block 7 is threadedly connected to the linear screw 401, and the linear screw 401 is driven by the servo motor 402. The linear screw 401 can be driven to rotate by starting the servo motor 402, and then the connecting block 7 moves on the linear screw 401, and the connecting block 7 is guided by the moving long slot 6 during the process.
[0031] The utility model can use the intercepting fence 5 on the top of the smoke exhaust cart 1 on the front side of the smoke exhaust window 204 to block foreign matter absorbed during the negative pressure smoke exhaust process, so as to prevent the foreign matter from clogging the smoke exhaust window 204 and affecting the normal operation of the negative pressure smoke exhaust. The arranged moving driving component 4 can drive the intercepting fence 5 to move, so that the foreign matter intercepted on the intercepting fence 5 is moved to the position of the cleaning mechanism 3 and cleaned by the cleaning mechanism, so that the intercepting fence 5 is not blocked by foreign matter and affects the normal negative pressure smoke exhaust, and the normal operation of the negative pressure smoke exhaust can be effectively guaranteed. The positive and negative pressure smoke exhaust equipment for fire fighting of the utility model has simple switching between positive and negative pressure smoke exhaust, and the smoke exhaust mode can be switched only by operating the control valve 207, which is highly convenient.
[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A fire extinguishing positive and negative pressure smoke exhaust equipment, characterized in that: The invention comprises a smoke exhaust trolley (1), a positive and negative pressure smoke exhaust mechanism (2), an interception mechanism and a debris removal mechanism (3); the positive and negative pressure smoke exhaust mechanism (2) is arranged at the middle of the top of the smoke exhaust trolley (1); the positive and negative pressure smoke exhaust mechanism (2) comprises an equipment box (201), a smoke exhaust pipeline, a positive pressure smoke exhaust fan (202) and a negative pressure smoke exhaust fan (203); a smoke exhaust window (204) is arranged on the front of the equipment box (201); the smoke exhaust pipeline, the positive pressure smoke exhaust fan (202) and the negative pressure smoke exhaust fan (203) are all arranged inside the equipment box (201); the smoke exhaust pipeline is connected to the smoke exhaust window (204); the positive pressure smoke exhaust fan (202) and the negative pressure smoke exhaust fan (203) are connected to the smoke exhaust pipeline, an interception mechanism is provided on the front side of the top of the smoke exhaust cart (1), and the interception mechanism includes a movable driving component (4) and an interception fence (5), a movable driving component (4) is provided on the front side of the cavity inside the smoke exhaust cart (1), a movable long groove (6) is provided on the front side of the top of the smoke exhaust cart (1), and the interception fence (5) is provided with a connecting block (7), the connecting block (7) is slidably connected to the movable long groove (6), and the lower end of the connecting block (7) is connected to the movable driving component (4), and a cleaning mechanism (3) is provided on the top of the smoke exhaust cart (1) on both sides of the positive and negative pressure smoke exhaust mechanism (2).
2. A fire extinguishing positive and negative pressure smoke exhaust equipment according to claim 1, characterized in that: The smoke exhaust pipeline comprises a butt-joint pipe (205), a three-way pipe (206) and a control valve (207); the butt-joint pipe (205) is connected to the smoke exhaust window (204); the first interface on the three-way pipe (206) is connected to one end of the butt-joint pipe (205); the second interface on the three-way pipe (206) is connected to the positive-pressure smoke exhaust fan (202); the third interface on the three-way pipe (206) is connected to the negative-pressure smoke exhaust fan (203); and the control valve (207) passes through the top of the equipment box (201).
3. The fire extinguishing positive and negative pressure smoke exhaust equipment according to claim 1, characterized in that: The intercepting fence (5) comprises a bottom crossbeam (501), a first straight rod (502), a second straight rod (503) and an inclined rod (504); the top of the bottom crossbeam (501) is provided with a first straight rod (502); a plurality of groups of the first straight rods (502) are equidistantly provided; the upper ends of the plurality of groups of the first straight rods (502) are obliquely provided with inclined rods (504); the upper ends of the inclined rods (504) are provided with second straight rods (503).
4. A fire extinguishing positive and negative pressure smoke exhaust equipment according to claim 3, characterized in that: A guide wheel groove (8) is provided on the upper front of the equipment box body (201), and a roller (9) is rotatably provided on the top of the second straight rod (503), and the roller (9) is rollingly connected to the guide wheel groove (8).
5. The fire extinguishing positive and negative pressure smoke exhaust equipment according to claim 1, characterized in that: The debris clearing mechanism (3) comprises a column (301), a pushing cylinder (302), a mounting beam (303) and a debris clearing vertical rod (304); the pushing cylinder (302) is mounted on the column (301); the output end of the pushing cylinder (302) is provided with a mounting beam (303); one side of the mounting beam (303) is provided with a debris clearing vertical rod (304); and the debris clearing vertical rod (304) is provided in multiple groups.
6. The fire extinguishing positive and negative pressure smoke exhaust equipment according to claim 1, characterized in that: The mobile driving component (4) comprises a linear screw (401) and a servo motor (402); the front side of the cavity inside the smoke exhaust cart (1) is rotatably provided with a linear screw (401); the connecting block (7) is threadedly connected to the linear screw (401); and the linear screw (401) is driven by the servo motor (402).