Tool for assisting negative pressure type smoke ventilator
By designing a combination of circular and 'F' shaped clamps, the problem of limited smoke inlet position in negative pressure smoke exhaust fans was solved, enabling efficient capture of dense smoke above and reducing smoke hazards, thus improving smoke exhaust efficiency and ease of operation.
Patent Information
- Application Number
- CN202520405836.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-10
AI Technical Summary
The existing negative pressure smoke exhaust fan has a limited smoke inlet location, which makes it unable to effectively capture dense smoke above, and it can easily obstruct the firefighters' attack and retreat routes during operation.
Design a tool that includes a circular clamp and an "F" shaped clamp. The circular clamp fixes the smoking pipe with an adjustable clamp structure, and the "F" shaped clamp is fixed to the building door or window frame with a clamping component to achieve high-level fixation of the smoking port.
It effectively captures upward-spreading smoke, reduces the harm of smoke to firefighters, improves smoke extraction efficiency, and simplifies the installation and removal process of the smoke inlet.
Smart Images
Figure CN223909659U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fire fighting equipment technical field, concretely relates to a tool for assisting negative pressure type smoke exhaust fan, especially a tool that can fix the smoke suction port of the negative pressure type smoke exhaust fan above the building door frame or window frame to improve the smoke exhaust efficiency and reduce the harm of flue gas to firefighters. BACKGROUND
[0002] In building fires, the rapid spread of smoke is one of the main reasons for casualties and property losses. In order to effectively remove the smoke at the fire scene, firefighters usually use natural smoke exhaust, artificial smoke exhaust or mechanical smoke exhaust methods. Among them, the negative pressure type smoke exhaust fan is widely used because of its high smoke exhaust capacity.
[0003] The negative pressure type smoke exhaust fan is usually composed of a motor, a fan and a smoke suction pipe. The motor drives the fan to rotate at high speed, generates strong suction, and sucks the smoke at the fire scene into the smoke exhaust fan through the smoke suction pipe, and then exhausts the flue gas outside the building. Due to the negative pressure generated by the smoke exhaust fan, the flue gas is quickly sucked away, thereby reducing the flue gas concentration at the fire scene.
[0004] However, the existing negative pressure type smoke exhaust fan has some problems in actual operation:
[0005] 1. The position of the smoke suction port is limited: the smoke suction port of the smoke exhaust fan needs to be close to the combustion area to effectively suck away the smoke, but due to the characteristics of the flue gas, the smoke usually spreads upwards in space, so the smoke suction port of the smoke exhaust fan can only be placed on the ground or at a lower position, which cannot effectively capture the smoke above.
[0006] 2. Operation risk: The smoke inlet of the traditional smoke exhaust fan is generally placed near the attack channel of the firefighters, which easily blocks and affects the attack and retreat route during the fire fighting process.
[0007] Therefore, there is an urgent need for a tool that can assist the negative pressure type smoke exhaust fan to be more efficient in smoke exhaust to solve the above technical problems. INVENTION CONTENTS
[0008] In order to solve the above technical problems, the utility model provides a tool for assisting negative pressure type smoke exhaust fan, which can fix the smoke suction port of the negative pressure type smoke exhaust fan above the building door frame or window frame, so as to more effectively capture the smoke, reduce the harm of flue gas to firefighters, and improve the smoke exhaust efficiency.
[0009] The specific scheme is as follows:
[0010] The utility model provides a tool for assisting negative pressure type smoke exhaust fan, the negative pressure type smoke exhaust fan is equipped with a smoke suction pipe, and the tool is composed of a circular clamp and a "F" shaped clamp;
[0011] The circular clamp is an adjustable clamp structure, comprising a metal frame with an adjustable gap, and an annular groove is arranged on the inner side of the metal frame to match the outer diameter of the smoking pipe, and the end of the smoking pipe is installed in the annular groove to fix the smoking pipe on the circular clamp.
[0012] First and second connecting portions are extended from both sides of the metal frame, and a fastening mechanism is arranged between the first and second connecting portions.
[0013] The "F" shaped clamp comprises a mounting rod, a first connecting arm, a second connecting arm and a clamping assembly, one end of the mounting rod is fixed on the fastening mechanism to realize the connection of the "F" shaped clamp and the circular clamp, the first and second connecting arms are respectively installed vertically on the mounting rod, and the first connecting arm is arranged at the end of the mounting rod.
[0014] The clamping assembly comprises a clamping piece, an adjusting screw and a fastening handle, the second connecting arm is threadedly connected with the adjusting screw at the end thereof, the clamping piece is arranged on the side opposite to the first connecting arm of the adjusting screw, the other end of the adjusting screw is connected with the fastening handle, and the movement of the clamping piece is adjusted by controlling the fastening handle to adjust the distance between the clamping piece and the first connecting arm according to the size of the external object, so as to fix the "F" shaped clamp on the external object.
[0015] Further, a high-temperature-resistant gasket is arranged at the end of the first connecting arm opposite to the second connecting arm.
[0016] Further, the clamping piece is a high-temperature-resistant gasket.
[0017] Further, the inner wall of the annular groove is provided with anti-skid lines.
[0018] Further, the fastening handle is made of high-temperature-resistant rubber material.
[0019] Further, the fastening mechanism is a combination of a fastening bolt and a fastening butterfly nut, and the size of the adjustable gap is controlled by rotating the fastening butterfly nut.
[0020] Further, one end of the fastening bolt is fixed on the first connecting portion, and the middle part of the fastening bolt is threadedly connected with the second connecting portion.
[0021] Further, one end of the mounting rod is installed on the fastening bolt between the first and second connecting portions through a connecting screw hole.
[0022] Further, the "F" shaped clamp is used to fix the smoking pipe at the upper position of the building door frame or window frame.
[0023] Advantages:
[0024] 1. The utility model discloses a combination design of circular clamp and "F" clamp, the tool can quickly fix the smoking pipe on external object (such as building door frame or window frame), and the installation and dismounting process is simple and convenient, and the working efficiency is improved significantly.
[0025] 2. The circular clamp of the utility model adopts adjustable clamp structure, can adapt to smoking pipes of different diameters, and is strong in universality, the clamping assembly of "F" clamp realizes the position adjustment of clamping piece through adjusting screw and fastening handle, can adapt to external objects of different thicknesses and shapes, and has wide application range.
[0026] 3. The tool of the utility model is not only suitable for fixing the smoking pipe of negative pressure type smoke exhaust machine, but also can be used in other scenes needing temporarily fixing pipeline or equipment, and has wide application prospect.
[0027] 4. The utility model discloses simple structure, easy manufacturing and maintenance, and low cost, and is suitable for large-scale popularization and use. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 It is the state diagram of the utility model installed on the negative pressure type smoke exhaust machine;
[0029] Figure 2 It is the three-dimensional structure schematic diagram of the utility model;
[0030] Figure 3 It is the three-dimensional structure schematic diagram of another angle of the utility model;
[0031] Figure 4 It is the three-dimensional structure schematic diagram of the circular clamp of the utility model;
[0032] Figure 5 It is the three-dimensional structure schematic diagram of "F" clamp of the utility model.
[0033] Wherein: 1-smoking pipe, 2-metal frame, 3-first connecting part, 4-second connecting part, 5-fastening bolt, 6-fastening butterfly nut, 7-mounting rod, 8-first connecting arm, 9-second connecting arm, 10-connecting screw hole, 11-clamping piece, 12-adjusting screw, 13-fastening handle, 14-high-temperature-resistant gasket. DETAILED DESCRIPTION
[0034] To further illustrate the embodiments, the utility model provides has the drawing. These drawings are part of the utility model disclosure, which is mainly used to illustrate the embodiments, and can be combined with the related description of the specification to explain the operation principle of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and the advantages of the utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0035] The utility model is further illustrated in conjunction with the specific embodiment and the drawing.
[0036] The utility model is a tool for assisting negative pressure type smoke exhauster, the negative pressure type smoke exhauster is equipped with smoke suction pipe 1, this tool includes circular clamp and '' F '' clamp, circular clamp is used for fixing the smoke suction pipe 1 of negative pressure type smoke exhauster, and '' F '' clamp is used for fixing the smoke suction pipe 1 above building door frame or window frame.
[0037] Circular clamp is adjustable clamp structure, to adapt to different diameter smoke suction pipe 1, specifically, the circular clamp includes the metal frame 2 with adjustable gap, the inner side of the metal frame 2 is equipped with annular groove, the size of the annular groove is matched with the outer diameter of the smoke suction pipe 1, to ensure that the smoke suction pipe 1 can be stably installed in the annular groove. The two sides of the metal frame 2 extend out first connecting part 3 and second connecting part 4 respectively, and the fastening mechanism is arranged between the first connecting part 3 and the second connecting part 4, for adjusting and locking the opening size of the metal frame 2, to fix the smoke suction pipe 1.
[0038] In order to improve the antiskid effect, the inner wall of the annular groove is provided with anti-skid lines to increase the friction between the metal frame 2 and the smoke suction pipe 1, to prevent the smoke suction pipe 1 from sliding or falling off during work.
[0039] As a specific embodiment of the utility model, the fastening mechanism adopts the combination of fastening bolt 5 and fastening butterfly nut 6, one end of the fastening bolt 5 is fixed on the first connecting part 3, the middle part of the fastening bolt 5 is connected with the second connecting part 4 through thread cooperation, and the other end of the fastening bolt 5 is connected with the fastening butterfly nut 6. By rotating the fastening butterfly nut 6, the size of the adjustable gap of the metal frame 2 can be controlled, so as to adapt to different diameter smoke suction pipe 1, and then realize the firm fixation of the smoke suction pipe 1.
[0040] The '' F '' clamp includes mounting rod 7, first connecting arm 8, second connecting arm 9 and clamping assembly, wherein: one end of the mounting rod 7 is fixed on the fastening mechanism of the circular clamp (for example, connecting screw hole can be used), to realize the connection of the '' F '' clamp and the circular clamp; the first connecting arm 8 and the second connecting arm 9 are vertically installed on the mounting rod 7 respectively, and the first connecting arm 8 is located at the end of the mounting rod 7 (close to the side of the circular clamp).
[0041] As another specific embodiment of the utility model, one end of the mounting rod 7 is installed on the fastening bolt 5 between the first connecting part 3 and the second connecting part 4 through the connecting screw hole 10.
[0042] In addition, the clamping assembly of the above-mentioned "F"-shaped clamp comprises a clamping piece 11, an adjusting screw rod 12 and a fastening handle 13, wherein: the distal end of the second connecting arm 9 is threadedly connected with the adjusting screw rod 12, the clamping piece 11 is arranged on the side of the adjusting screw rod 12 opposite to the first connecting arm 8, the other end of the adjusting screw rod 12 is connected with the fastening handle 13, and the movement of the clamping piece 11 can be adjusted by rotating the fastening handle 13, so that the distance between the clamping piece 11 and the first connecting arm 8 is adjusted according to the size of the external object, and the fixation of the "F"-shaped clamp on the external object (for example, the fixation of the "F"-shaped clamp on the door frame or the window frame of a building) is realized.
[0043] As a specific embodiment of the utility model, the clamping piece 11 is made of a high-temperature-resistant gasket (metal sheet, high-temperature-resistant rubber sheet, etc.), so as to meet the use requirement in a high-temperature environment. Meanwhile, a high-temperature-resistant gasket 14 (metal sheet, high-temperature-resistant rubber sheet, etc.) is also arranged on the side of the distal end of the first connecting arm 8 opposite to the second connecting arm 9, so as to further improve the high-temperature-resistant performance of the device of the utility model and ensure that the device can still maintain good clamping effect when used in a high-temperature environment.
[0044] As another specific embodiment of the utility model, the fastening handle 13 is made of high-temperature-resistant rubber material, which is convenient to operate and resistant to high temperature.
[0045] Use method:
[0046] First, the negative pressure smoke exhauster and the auxiliary tool of the utility model are prepared. The smoke suction pipe of the negative pressure smoke exhauster is inserted into the annular groove of the circular clamp, and the gap of the metal frame is adjusted to ensure that the smoke suction pipe is stably fixed. Then, the mounting rod of the "F"-shaped clamp is fixed on the fastening mechanism of the circular clamp. Next, the first connecting arm and the second connecting arm of the "F"-shaped clamp are respectively aligned with the two sides of the door frame or the window frame of a building, the movement of the clamping piece is adjusted by rotating the fastening handle, and the clamping piece and the first connecting arm tightly clamp the door frame or the window frame until the clamping piece and the first connecting arm tightly clamp the door frame or the window frame. Finally, the negative pressure smoke exhauster is started, and the smoke suction port can be fixed at the upper position of the door frame or the window frame, so as to effectively capture the smoke floating upwards.
[0047] The smoke suction port of the negative pressure smoke exhauster is fixed above the entrance of the indoor door of a building. In this way, the smoke suction port does not need to be close to the combustion area to suck the smoke, and the smoke is floating upwards in the space, so the smoke suction port at the door entrance can also suck the continuous smoke, thereby reducing the harm of smoke and improving the indoor visibility.
[0048] Therefore, the tool for assisting the negative pressure type smoke exhauster can fix the smoke suction port of the smoke exhauster above the building door frame or the window frame, so that the thick smoke can be more effectively captured, the harm of the smoke to the firefighters is reduced, and the smoke exhaust efficiency is improved.
[0049] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all are within the protection scope of the utility model.
Claims
1. A tool for assisting a negative pressure type smoke exhauster provided with a smoke suction duct, characterized by, The tool is composed of a circular clamp and an "F" shaped clamp; The circular clamp is an adjustable clamp structure, including a metal frame with adjustable gap, the inner side of the metal frame is provided with an annular groove matching the outer diameter of the smoking pipe, the end of the smoking pipe is installed in the annular groove, thereby fixing the smoking pipe on the circular clamp; The metal frame extends out first and second connecting parts on both sides respectively, and a fastening mechanism is arranged between the first and second connecting parts; The "F" shaped clamp includes a mounting rod, a first connecting arm, a second connecting arm and a clamping assembly, one end of the mounting rod is fixed on the fastening mechanism to realize the connection of the "F" shaped clamp and the circular clamp; the first and second connecting arms are respectively installed vertically on the mounting rod, and the first connecting arm is arranged at the end of the mounting rod; The clamping assembly includes a clamping piece, an adjusting screw and a fastening handle, the second connecting arm is threadedly connected with the adjusting screw at the end, the clamping piece is arranged on the side opposite to the first connecting arm of the adjusting screw, the other end of the adjusting screw is connected with the fastening handle, the movement of the clamping piece is adjusted by controlling the fastening handle, so as to adjust the distance between the clamping piece and the first connecting arm according to the size of the external object, thereby realizing the fixation of the "F" shaped clamp on the external object.
2. The tool for assisting a negative pressure smoke ventilator according to claim 1, characterized by, The end of the first connecting arm is provided with a high-temperature-resistant gasket on the side opposite to the second connecting arm.
3. The tool for assisting a negative pressure smoke ventilator according to claim 1, characterized by, The clamping piece is a high-temperature-resistant gasket.
4. The tool for assisting a negative pressure smoke ventilator according to claim 1, characterized by, The inner wall of the annular groove is provided with anti-skid lines.
5. The tool for assisting a negative pressure smoke exhauster according to claim 1, wherein The fastening handle is made of high-temperature-resistant rubber material.
6. The tool for assisting a negative pressure smoke exhauster according to claim 1, wherein The fastening mechanism is a combination of a fastening bolt and a fastening butterfly nut, the size of the adjustable gap is controlled by rotating the fastening butterfly nut.
7. The tool for assisting a negative pressure smoke exhauster according to claim 6, characterized by, One end of the fastening bolt is fixed on the first connecting part, and the middle part of the fastening bolt is threadedly connected with the second connecting part.
8. The tool for assisting a negative pressure smoke exhauster according to claim 7, characterized by, One end of the mounting rod is installed on the fastening bolt between the first and second connecting parts through a connecting screw hole.
9. The tool for assisting a negative pressure smoke ventilator according to any one of claims 1 to 8, characterized in that, The "F" shaped clamp is used to fix the smoking pipe at the upper position of the building door frame or window frame.