Pull rod type reset structure for executing mechanism of smoke exhaust fire damper

Abstract

The utility model relates to the technical field of smoke exhaust fireproof valves, and discloses a pull rod type reset structure for a smoke exhaust fireproof valve executing mechanism, which comprises a smoke exhaust pipeline, a handle is arranged on the front side of the smoke exhaust pipeline, the rear end of the handle penetrates through the smoke exhaust pipeline and is fixedly connected with a connecting rod, and the tail end of the connecting rod is fixedly connected with a sawtooth strip. The inner wall of the smoke exhaust pipeline is fixedly connected with a support, the bottom of the support is rotationally connected with a gear, the gear is connected with the sawtooth strip in a meshed mode, the bottom of the gear is fixedly connected with a sealing piece, the inner side of the smoke exhaust pipeline is fixedly connected with a fixing disc, and a smoke exhaust hole is formed in the top of the fixing disc. According to the smoke exhaust device, the movement of the sawtooth strip is in meshing transmission with the gear, so that the gear and the sealing piece are driven to rotate, the smoke exhaust hole is opened through the rotation of the sealing piece, the exposure range of the smoke exhaust hole is controlled through the movement of the sawtooth strip, and then the exhaust flow of smoke is controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust fire dampers, in particular to a pull rod type reset structure for a smoke exhaust fire damper actuator. Background Art

[0002] Smoke exhaust fire dampers are a key component used in smoke exhaust systems inside buildings. They are designed to control the spread of smoke when a fire occurs and provide ventilation to ensure the evacuation of personnel and a safe working environment for firefighters. These valves are usually installed in the ventilation ducts of the building and connected to the fire detection system and control system so that they can be automatically activated when the fire alarm is triggered.

[0003] After searching, the Chinese patent announcement number is: CN202040391U, which discloses a pull rod reset device for a smoke exhaust fire damper actuator, which includes a pull rod, a pull ring, and a swing rod with an axis, the pull ring is connected to one end of the pull rod, and is characterized in that the swing rod with an axis is provided with a perforation, the other end of the pull rod has a bend, the bent part of the pull rod passes through the perforation, the end of the bent part is provided with a thread, and the thread is provided with a matching nut. The perforation on the swing rod with an axis is runway-shaped or elliptical. Adopting the above scheme, the pull rod reset device of the smoke exhaust fire damper actuator of the utility model utilizes the perforation made on the swing rod with an axis, omitting the production of the transition rod in the prior art, which not only simplifies the process but also omits the material; on the other hand, the bend is made at the other end of the pull rod, which is far superior to the punching and punching of the prior art in terms of process. Therefore, this practical technology not only has the characteristics of simple structure, but also simple processing technology, but this method cannot control the exhaust flow of smoke according to the pull-out length during use, and cannot meet the needs of use. Utility Model Content

[0004] In order to remedy the above shortcomings, the utility model provides a pull rod type reset structure for a smoke exhaust fire damper actuator, aiming to improve the problem in the prior art that the exhaust flow rate of smoke cannot be controlled according to the pull-out length.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pull rod reset structure for a smoke exhaust fire damper actuator comprises a smoke exhaust pipe, a handle is installed on the front side of the smoke exhaust pipe, the rear end of the handle passes through the smoke exhaust pipe and is fixedly connected to a connecting rod, the end of the connecting rod is fixedly connected to a sawtooth bar, the inner wall of the smoke exhaust pipe is fixedly connected to a bracket, the bottom of the bracket is rotatably connected to a gear, the gear is meshed with the sawtooth bar, the bottom of the gear is fixedly connected to a sealing plate, the inner side of the smoke exhaust pipe is fixedly connected to a fixing plate, the top of the fixing plate is provided with a smoke exhaust hole, and a fixing mechanism is installed at the right end of the front side of the smoke exhaust pipe.

[0006] As a further description of the above technical solution:

[0007] The fixing mechanism includes an elastic band, the rear end of which is fixedly connected to the front side of the outer wall of the smoke exhaust pipe, the end of the elastic band is fixedly connected to a plug rod, the bottom of the plug rod is threadedly connected to a screw, and the outer wall of the connecting rod is equidistantly provided with a plurality of insertion holes, and the left end of the screw passes through the insertion hole and is threadedly connected to a nut.

[0008] As a further description of the above technical solution:

[0009] A fixing strip is fixedly connected to the inner left end of the smoke exhaust pipe.

[0010] As a further description of the above technical solution:

[0011] A slot is provided on the right side of the fixing bar, a slider is fixedly connected to the left side of the sawtooth bar, and the slider is slidably connected to the slot.

[0012] As a further description of the above technical solution:

[0013] A strip board is fixedly connected to the left front end of the smoke exhaust pipe.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the strip is provided with a plurality of scale grooves at equal intervals.

[0016] As a further description of the above technical solution:

[0017] The left side of the handle is fixedly connected with a pointer.

[0018] As a further description of the above technical solution:

[0019] The pointer and the scale groove are designed symmetrically.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the movement of the sawtooth bar meshes with the gear to drive the gear and the sealing plate to rotate. The rotation of the sealing plate opens the smoke exhaust hole. The movement of the sawtooth bar controls the exposure range of the smoke exhaust hole, thereby controlling the exhaust flow of the smoke, which can meet the needs of use.

[0022] 2. In the present invention, the insertion rod is inserted into the corresponding insertion hole, and the screw passes through the bottom of the insertion rod, thereby fixing the position of the connecting rod, avoiding changes in the angle of the sealing sheet, and further avoiding the situation where the smoke flow cannot be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A three-dimensional diagram of the pull rod type reset structure for the smoke exhaust fire damper actuator proposed in the utility model;

[0024] Figure 2 It is a partial structural explosion diagram of the pull rod type reset structure for the smoke exhaust fire damper actuator proposed in the utility model;

[0025] Figure 3 This is a disassembled diagram of the fixing mechanism of the pull rod type reset structure for the smoke exhaust fire damper actuator proposed in the utility model.

[0026] Legend:

[0027] 1. Smoke exhaust duct; 2. Fixing mechanism; 201. Elastic band; 202. Insert rod; 203. Socket; 204. Screw; 205. Nut; 3. Sealing sheet; 4. Smoke exhaust hole; 5. Fixing plate; 6. Slot; 7. Connecting rod; 8. Fixing strip; 9. Sawtooth strip; 10. Slider; 11. Bracket; 12. Gear; 13. Strip; 14. Scale groove; 15. Pointer; 16. Handle. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1 , Figure 2 and Figure 3 The utility model provides an embodiment: a pull rod type reset structure for a smoke exhaust fire damper actuator, comprising a smoke exhaust pipe 1, a handle 16 is installed on the front side of the smoke exhaust pipe 1, the rear end of the handle 16 passes through the smoke exhaust pipe 1 and is fixedly connected to a connecting rod 7, the end of the connecting rod 7 is fixedly connected to a sawtooth bar 9, the inner wall of the smoke exhaust pipe 1 is fixedly connected to a bracket 11, the bottom of the bracket 11 is rotatably connected to a gear 12, the gear 12 is meshed with the sawtooth bar 9, the bottom of the gear 12 is fixedly connected to a sealing sheet 3, the inner side of the smoke exhaust pipe 1 is fixedly connected to a fixed disk 5, the top of the fixed disk 5 is provided with a smoke exhaust hole 4, a fixing mechanism 2 is installed on the front right end of the smoke exhaust pipe 1; a strip plate 13 is fixedly connected to the front left end of the smoke exhaust pipe 1; a plurality of scale grooves 14 are equidistantly provided on the outer wall of the strip plate 13; a pointer 15 is fixedly connected to the left side of the handle 16;

[0030] Specifically, by moving the handle 16, the synchronous movement of the connecting rod 7 and the serrated bar 9 can be controlled; the close cooperation between the connecting rod 7 and the serrated bar 9 ensures the precise control of the valve; the movement of the serrated bar 9 further drives the gear 12 to engage and transmit; this process drives the gear 12 and the sealing plate 3 to rotate; the rotation of the sealing plate 3 enables the smoke exhaust hole 4 to be opened, thereby achieving effective discharge of smoke; the pointer 15 on the handle 16 and the corresponding scale groove 14 play a role in measurement and control; by pre-measuring the length of each distance and the corresponding angle of rotation of the sealing plate 3, the exposure range of the smoke exhaust hole 4 can be accurately controlled during the movement of the serrated bar 9; finally, in this way, the smoke exhaust fire damper can adjust the exhaust flow of smoke according to the movement of the serrated bar 9; when a fire occurs, this control method can effectively reduce the concentration of indoor smoke and provide safety for the evacuation of personnel.

[0031] Reference Figure 1 and Figure 3 The fixing mechanism 2 includes an elastic band 201, the rear end of the elastic band 201 is fixedly connected to the front side of the outer wall of the smoke exhaust pipe 1, the end of the elastic band 201 is fixedly connected to a plug rod 202, the bottom of the plug rod 202 is threadedly connected to a screw 204, and the outer wall of the connecting rod 7 is equidistantly provided with a plurality of insertion holes 203, the left end of the screw 204 passes through the insertion hole 203 and is threadedly connected to a nut 205;

[0032] Specifically, after the connecting rod 7 is pulled to the appropriate position, the insertion operation of the plug rod 202 is performed next; this process requires that the plug rod 202 be accurately aligned with the corresponding socket 203 to ensure that the plug rod 202 and the socket 203 are tightly combined; on this basis, an important step is also required, that is, the penetration operation of the screw 204; in the process of the screw 204 penetrating the bottom of the plug rod 202, the stability of the screw 204 must be ensured to avoid loosening during operation; then, the nut 205 is installed. The purpose of this step is to fix the position of the connecting rod 7 to ensure that it remains stable during use.

[0033] Reference Figure 2 and Figure 3 The left end of the inner side of the smoke exhaust pipe 1 is fixedly connected with a fixing strip 8; a slot 6 is provided on the right side of the fixing strip 8, a slider 10 is fixedly connected to the left side of the sawtooth strip 9, and the slider 10 is slidably connected to the slot 6; the pointer 15 and the scale groove 14 are symmetrically designed;

[0034] Specifically, the slider 10 slides in the slot 6, planning the movement trajectory of the sawtooth bar 9, and the symmetrically designed pointer 15 and scale groove 14 can increase the accuracy of smoke control.

[0035] Working principle: When controlling the exhaust flow of the smoke exhaust fire damper, pull the handle 16 to move, and the movement of the handle 16 will cause the connecting rod 7 and the serrated bar 9 to move synchronously. The movement of the serrated bar 9 will mesh with the gear 12 to drive the gear 12 and the sealing plate 3 to rotate. The rotation of the sealing plate 3 will open the smoke exhaust hole 4. At the same time, the length of the pulled distance can be judged by the direction of the pointer 15 on the handle 16 and the corresponding scale groove 14. The length of each distance and the corresponding angle of rotation of the sealing plate 3 can be measured in advance, so that the exposure range of the smoke exhaust hole 4 can be controlled by the movement of the serrated bar 9, and then the exhaust flow of the smoke can be controlled, which can meet the use requirements. After pulling the connecting rod 7 to a suitable position, take the plug rod 202 and insert it into the corresponding socket 203. At the same time, the screw 204 passes through the bottom of the plug rod 202, and the nut 205 is installed to fix the position of the connecting rod 7, avoid the angle of the sealing plate 3 from changing, and avoid the situation where the smoke flow cannot be controlled.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pull rod type reset structure for a smoke exhaust fire damper actuator, comprising a smoke exhaust pipe (1), characterized in that: A handle (16) is installed on the front side of the smoke exhaust pipe (1), the rear end of the handle (16) passes through the smoke exhaust pipe (1) and is fixedly connected to a connecting rod (7), the end of the connecting rod (7) is fixedly connected to a sawtooth bar (9), the inner wall of the smoke exhaust pipe (1) is fixedly connected to a bracket (11), the bottom of the bracket (11) is rotatably connected to a gear (12), the gear (12) is meshingly connected to the sawtooth bar (9), the bottom of the gear (12) is fixedly connected to a sealing sheet (3), the inner side of the smoke exhaust pipe (1) is fixedly connected to a fixing plate (5), the top of the fixing plate (5) is provided with a smoke exhaust hole (4), and a fixing mechanism (2) is installed at the front right end of the smoke exhaust pipe (1).

2. The pull rod type reset structure for the smoke exhaust fire damper actuator according to claim 1 is characterized in that: The fixing mechanism (2) comprises an elastic band (201), the rear end of the elastic band (201) being fixedly connected to the front side of the outer wall of the smoke exhaust pipe (1), the end of the elastic band (201) being fixedly connected to an insertion rod (202), the bottom of the insertion rod (202) being threadedly connected to a screw (204), the outer wall of the connecting rod (7) being provided with a plurality of insertion holes (203) at equal intervals, the left end of the screw (204) passing through the insertion hole (203) and being threadedly connected to a nut (205).

3. The pull rod type reset structure for the smoke exhaust fire damper actuator according to claim 1, characterized in that: A fixing strip (8) is fixedly connected to the inner left end of the smoke exhaust pipe (1).

4. The pull rod type reset structure for the smoke exhaust fire damper actuator according to claim 3 is characterized in that: A slot (6) is provided on the right side of the fixing strip (8), a sliding block (10) is fixedly connected to the left side of the sawtooth strip (9), and the sliding block (10) is slidably connected to the slot (6).

5. The pull rod type reset structure for the smoke exhaust fire damper actuator according to claim 1, characterized in that: A strip board (13) is fixedly connected to the front left end of the smoke exhaust pipe (1).

6. The pull rod type reset structure for the smoke exhaust fire damper actuator according to claim 5, characterized in that: The outer wall of the strip plate (13) is provided with a plurality of scale grooves (14) at equal intervals.

7. The pull rod type reset structure for the smoke exhaust fire damper actuator according to claim 1, characterized in that: A pointer (15) is fixedly connected to the left side of the handle (16).

8. The pull rod type reset structure for the smoke exhaust fire damper actuator according to claim 7, characterized in that: The pointer (15) and the scale groove (14) are symmetrically designed.

Images