CN113202961A

CN113202961A - Smoke exhaust valve handle

Info

Publication number: CN113202961A
Application number: CN202110677911.8A
Authority: CN
Inventors: 黄楷熠; 谢雅娟
Original assignee: Shaoxing Changhe Electromechanical Technology Co ltd
Current assignee: Shaoxing Changhe Electromechanical Technology Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-08-03

Abstract

The invention discloses a smoke exhaust valve handle which comprises a fixed sleeve, a movable rod and a spring, wherein the movable rod is matched in the fixed sleeve; one end of the movable rod is provided with a thread. In a normal state, the threaded hole and the movable rod are in a separated state. The movable rod is rotated, the guide piece moves along the curved guide groove, the movable rod rotates and moves axially relative to the fixed sleeve, the thread at one end of the movable rod is screwed into the threaded hole of the blade shaft, the blade shaft is driven to rotate, and the smoke exhaust valve is opened. The smoke exhaust valve handle is a backup mechanism in emergency, or called as a backup measure, and provides possibility for indoor smoke exhaust under the condition that a motor does not work.

Description

Smoke exhaust valve handle

Technical Field

The invention relates to fire-fighting equipment, in particular to a smoke exhaust valve.

Background

And the smoke exhaust valve is arranged at the end part of each branch pipe of the smoke exhaust system, is closed in a normal state, and is manually or electrically opened to exhaust smoke in case of fire or smoke exhaust. The opening of the smoke exhaust valve is realized through the synchronous rotation of a plurality of blades, the synchronous rotation of the plurality of blades is realized through a connecting rod mechanism, and in the plurality of blades, the shaft of one blade is connected with a motor or a handle. The motor or the handle drives the blade shaft connected with the motor or the handle, the blade shaft rotates, and the blade shaft drives other blade shafts to synchronously rotate through the connecting rod mechanism, so that the smoke exhaust valve is opened.

Disclosure of Invention

The technical problems solved by the invention are as follows: a handle which does not affect the electric opening of the smoke exhaust valve is designed.

In order to solve the technical problems, the invention provides the following technical scheme: a smoke exhaust valve handle comprises a fixed sleeve, a movable rod and a spring, wherein the movable rod is matched in the fixed sleeve, the spring is matched between the fixed sleeve and the movable rod, the fixed sleeve is provided with a curved guide groove, and the movable rod is provided with a guide piece which can be matched in the curved guide groove; one end of the movable rod is provided with a thread.

In the prior art, a threaded hole is formed in one end of a blade shaft originally connected with a motor, and when the smoke exhaust valve handle is not used, the threaded hole and a movable rod are in a separated state. Therefore, the smoke exhaust valve handle does not influence the electric opening of the smoke exhaust valve.

When the smoke exhaust valve handle is required to be used, an operator rotates the movable rod, the guide piece displaces along the curved guide groove, the movable rod is driven to displace relative to the fixed sleeve, and the displacement direction is the axial direction of the fixed sleeve. So, when the movable rod is rotatory relatively to fixed cover, relative fixed cover axial displacement, the screw in of movable rod one end the screw hole of blade axle, the movable rod drive blade axle rotates. The blade shaft drives other blade shafts to synchronously rotate through the connecting rod mechanism, so that the synchronous rotation of all the blades is realized, the opening of the smoke exhaust valve is further realized, and the smoke exhaust valve discharges smoke.

The smoke exhaust valve handle is a one-way action handle for opening the smoke exhaust valve, is used in emergency situations, such as fire or other emergency situations, indoor smoke needs to be discharged outside emergently, and a motor does not act.

The smoke exhaust valve handle is a backup mechanism in emergency, or called as a backup measure, and provides possibility for indoor smoke exhaust under the condition that a motor does not work.

Drawings

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic view of a smoke evacuation valve handle;

fig. 2 is an exploded view of fig. 1.

The symbols in the drawings illustrate that:

10. fixing a sleeve; 11. a curved guide groove; 112. a straight wall; 113. a tilt structure; 13. a large diameter section; 14. a small diameter section;

20. a movable rod; 21. a guide member; 22. a thread; 23. a step; 24. a handle; 240. a bending part; 25. a piston;

30. a spring;

40. connecting the plates;

50. one end of a blade shaft connected to the motor; 51. a threaded bore.

Detailed Description

With reference to fig. 1 and 2, a smoke evacuation valve handle comprises a fixed sleeve 10, a movable rod 20 and a spring 30, wherein the movable rod is matched in the fixed sleeve, the spring is matched between the fixed sleeve and the movable rod, the fixed sleeve is provided with a curved guide groove 11, and the movable rod is provided with a guide piece 21 which can be matched in the curved guide groove; one end of the movable rod is provided with a thread 22.

The structure of the smoke exhaust valve in the prior art is similar to the oversize fire damper disclosed in the patent document with the publication number CN 209483949U. In the prior art, the smoke exhaust valve comprises an outer frame, a blade shaft pivoted in the outer frame, blades arranged on the blade shaft, and a link mechanism connected with all the blade shafts, wherein one blade shaft is connected with a motor, the motor is arranged on the outer side wall of the outer frame and connected with a controller, and the controller is connected with a smoke sensor. When the smoke sensor senses the smoke, the controller drives the motor to act, the motor drives the blade shafts connected with the motor to rotate, the blade shafts drive all the blade shafts to synchronously rotate through the connecting rod mechanism, all the blades synchronously rotate, and then the smoke exhaust valve is opened to exhaust smoke.

One end 50 of the blade shaft connected with the motor is provided with a threaded hole 51, the fixed sleeve 10 is fixedly arranged on the outer side wall of the outer frame of the smoke exhaust valve, the axis of the fixed sleeve is superposed with the axis of the blade shaft provided with the threaded hole, and correspondingly, the axis of the movable rod 20 is superposed with the axis of the blade shaft. In a normal state, the smoke exhaust valve is closed, and the threaded hole 51 and the movable rod 20 are in a separated state. If the motor can normally act to open the smoke exhaust valve under the condition that smoke is required to be exhausted, the smoke exhaust valve handle is not required to be used, and the smoke exhaust valve handle is in an idle state. If the smoke exhaust is needed, for example, the indoor personnel obviously feel too much smoke, the breathing is difficult, the motor can not open the smoke exhaust valve, at the moment, the operator rotates the movable rod 20, the guide piece 21 displaces along the curved guide groove 11, and the movable rod 20 is driven to displace relative to the fixed sleeve 10, and the displacement direction is the axial direction of the fixed sleeve. As the movable rod rotates relative to the fixed sleeve, it is axially displaced relative to the fixed sleeve, and the screw thread 22 at one end of the movable rod 20 is screwed into the screw hole 51 of the blade shaft, so that the movable rod drives the blade shaft to rotate. The blade shaft drives other blade shafts to synchronously rotate through the connecting rod mechanism, so that the synchronous rotation of all the blades is realized, the opening of the smoke exhaust valve is further realized, and the smoke exhaust valve discharges smoke.

A step 23 is provided between the end of the movable rod 20 provided with the thread 22 and the movable rod body. The movable rod body is a movable rod body corresponding to the part of the movable rod provided with the thread 22, except for the part provided with the thread 22, and the other part of the movable rod 20. The outer diameter of the movable rod body is larger and the outer diameter of the portion provided with the thread 22 is smaller, so that a step 23 is formed at the junction of the movable rod body and the portion provided with the thread 22.

The step 23 functions to: when the movable rod 20 is rotated, the thread 22 is screwed into the threaded hole 51 of the blade shaft, and the step 23 on the movable rod is pressed against the end face of the blade shaft, so that the operator continues to rotate the movable rod 20, and the movable rod drives the blade shaft to rotate synchronously.

The curved guide groove 11 is arranged at one end of the fixing sleeve 10 and is in a notch shape. The guide 21 is rod-shaped, perpendicular to the movable rod 20, and it is close to said thread 22. So design, when the installation smoke damper handle, the cooperation of guide and bent shape guide way is more convenient. When the blade shaft is disengaged from the movable lever 20, the guide 21 is caught in the deepest part of the curved guide groove 11 by the spring 30. By rotating the movable rod 20, the guide 21 is displaced along the curved guide groove 11, the movable rod 20 is rotated and axially displaced relative to the fixed sleeve 10, and the screw thread 22 is screwed into the screw hole 51. The movable rod rotates continuously, the step 23 abuts against the end face of the blade shaft, the guide piece 21 is separated from the curved guide groove 11 and rotates along the end face of the fixed sleeve 10, and the movable rod 20 drives the blade shaft to rotate synchronously.

As an improvement, a limit structure may be disposed on the end surface of the fixing sleeve 10, and when the vane shaft rotates 90 degrees, the guide member 21 abuts against the limit structure to limit the rotation angle of the vane shaft.

One side of the curved guide slot 11 is a straight wall 112, and the other side is an inclined structure 113, the guide 21 can only move along the inclined structure 113 and disengage from the curved guide slot 11, i.e. the movable rod 20 can only rotate in one direction relative to the fixed sleeve 10.

The other end of the movable lever 20 is provided with a handle 24 for an operator to rotate the movable lever 20. The handle 24 is removably connected to the movable rod 20 to facilitate mounting of the spring 30 and engagement of the movable rod with the stationary sleeve 10, as described in detail below. The inner side wall of the fixed sleeve 10 is provided with an annular structure, the other end of the movable rod 20 is provided with a piston 25 through a threaded connector, the piston is matched in the fixed sleeve 10, one end of the spring 30 is pressed on the annular structure, and the other end of the spring is pressed on the piston 25. The spring 30 is compressed when the movable rod 20 is axially displaced with respect to the fixed sleeve 10. The function of the spring is as follows: the guide 21 is held in the curved guide groove 11, and the movable rod 20 is disengaged from the threaded hole 51 of the blade shaft. After the spring 30 is installed in place, the piston 25 is installed. The handle 24 is in turn mounted on the piston 25 by means of a threaded connection. The handle is provided with a bending part 240, and the bending part can extend into the fixing sleeve 10.

The fixed cover 10 is formed by connecting a large-diameter section 13 and a small-diameter section 14, the annular structure is formed at the joint of the large-diameter section and the small-diameter section, the piston 25 is matched in the large-diameter section, the outer diameter of the movable rod 20 is the same as the inner diameter of the small-diameter section 14, and the small-diameter section can guide the movable rod well.

The fixing sleeve 10 is welded with a connecting plate 40 which is provided with a connecting hole site. The motor, the controller and the smoke sensor of the smoke exhaust valve are arranged in a shell, the shell is arranged on the outer side wall of the outer frame of the smoke exhaust valve, and a blade shaft connected with the motor protrudes out of the outer frame and extends into the shell. The connecting plate 40 of the present invention is installed on the housing through a threaded connection, the movable rod 20 can extend into the housing to be screwed with the threaded hole 51 at one end of the blade shaft, and the handle 24 is located outside the housing.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description herein, since various changes and modifications can be made in the details of the embodiment and the application range according to the spirit of the present invention.

Claims

1. The utility model provides a smoke damper handle, includes fixed cover (10), movable rod (20), spring (30), and the movable rod cooperation is in fixed cover, and the spring cooperation is between fixed cover and movable rod, its characterized in that: the fixed sleeve is provided with a curved guide groove (11), and the movable rod is provided with a guide piece (21) which can be matched in the curved guide groove; one end of the movable rod is provided with a thread (22).

2. The smoke evacuation valve handle of claim 1, wherein: a step (23) is arranged between one end of the movable rod (20) provided with the thread (22) and the movable rod body.

3. The smoke evacuation valve handle of claim 1, wherein: the curved guide groove (11) is arranged at one end of the fixed sleeve (10) and is in a notch shape.

4. The smoke evacuation valve handle of claim 1, wherein: the other end of the movable rod (20) is provided with a handle (24).

5. The smoke evacuation valve handle of claim 4, wherein: the handle (24) is detachably connected with the movable rod (20).

6. The smoke evacuation valve handle of claim 1, wherein: the fixed sleeve (10) is welded with a connecting plate (40).