Automatic closing mechanism for air inlet
By designing an automatic closing mechanism including a shell, cover, push rod and electromagnet, the problem of long closing time of the air inlet is solved, and rapid closing is achieved, preventing dust and sand from entering the cabin, improving safety.
Patent Information
- Application Number
- CN202323627194.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-27
AI Technical Summary
The existing air inlets take a long time to close, resulting in dust particles and sand and other particulate matters that can still enter the cabin during the closure process, affecting the safety of personnel and equipment.
Design an automatic closing mechanism including a shell, cover plate, push rod, electromagnet and limiting parts. Through the cooperation of the electromagnet and push rod, the cover plate can be quickly lifted and lowered, ensuring that the air inlet is at high concentration of dust or sand. Quickly close when it appears.
It significantly shortens the closing time of the air inlet, prevents dust and sand from entering the cabin, and improves the safety of the cabin and the protection effect of equipment.
Smart Images
Figure CN222165038U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air inlets, in particular to an automatic closing mechanism for an air inlet. Background Art
[0002] At present, when the cabin is in the state of fresh air exchange, if there is a high concentration of dust particles, sand and other particles outside the cabin, the high concentration of dust particles, sand and other particles enter the cabin through the fresh air inlet, causing breathing difficulties for personnel or equipment damage. Therefore, the fresh air needs to be turned off to ensure the safety of personnel and equipment in the cabin.
[0003] The current implementation plan is to use a damper actuator to drive the damper to rotate and close the fresh air inlet. However, it takes a long time, about 2-10 seconds, for the damper actuator to start moving and completely close. During this period, a large amount of dust particles, sand and other particles will enter the cabin through the fresh air inlet. For this reason, an automatic air inlet closing mechanism is proposed. Utility Model Content
[0004] The purpose of the utility model is to provide an automatic closing mechanism for an air inlet to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic closing mechanism for an air inlet, comprising a shell and a cover plate installed at the end of the shell, a plurality of push rods for controlling the telescopic movement of the cover plate are arranged in the shell, a spring for resetting the cover plate is arranged between the cover plate and the shell, an electromagnet and a limit member are installed in the shell, a guide rod is installed at the lower end of the cover plate, and the end of the guide rod passes through the limit member and is connected to the armature, and the armature is located below the electromagnet.
[0006] As a further solution of the utility model: the electromagnet and the push rod are both connected with wires, the outer side wall of the shell is provided with a wire outlet locking piece, and the wires of the electromagnet and the push rod are both passed through the outside of the shell from the wire outlet locking piece.
[0007] As a further solution of the utility model: a plurality of spring hooks are installed at the lower end of the cover plate, the spring hooks are connected to one end of the spring, and the other end of the spring is fixed to the inner wall of the shell.
[0008] As a further solution of the utility model: the limiting member is fixed to the inner wall of the shell by bolts, and a through hole for the guide rod to pass through is opened on the limiting member.
[0009] As a further solution of the utility model: the number of the electromagnets is two, the two electromagnets are symmetrically arranged on the inner wall of the shell, and the two electromagnets are close to the upper end of the shell.
[0010] As a further solution of the utility model: the number of the push rods is four, the upper ends of the four push rods are connected to the cover plate, and the lower ends of the four push rods are connected to the inner wall of the shell.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. By passing the end of the guide rod through the circular hole on the limiter, the guide rod moves along the circular hole when rising or falling, and there will be no lateral displacement, which will cause the cover plate and the shell to be unable to cover each other, thereby greatly improving the stability of the cover plate when rising or falling.
[0013] 2. The push rod is energized to rotate forward to push the cover up, and the spring is in a pulled-up state at this time; the two electromagnets are energized to attract the armature respectively, and the position of the cover is fixed; the push rod is energized to reverse and fall down. At this time, since the electromagnet firmly attracts the armature, the guide rod supports the cover in an open state. When the air inlet is closed, the two electromagnets lose power and release the armature. Under the action of the spring tension, the cover falls quickly and contacts the shell, which greatly shortens the speed of the cover falling and speeds up the efficiency of closing the air inlet, preventing dust particles, sand and other particles from entering the cabin through the fresh air inlet during the closing process. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the air inlet cover of the utility model being opened;
[0015] Figure 2 It is a schematic cross-sectional view of the shell of the utility model;
[0016] Figure 3 This is a schematic diagram of the interior of the housing of the utility model;
[0017] Figure 4 This is a schematic diagram of the working state of the air inlet of the utility model;
[0018] Figure 5 This is a schematic diagram of the air inlet of the utility model in a closed state;
[0019] In the figure: 1. outlet locking member; 2. cover plate; 3. housing; 4. push rod; 5. spring hook; 6. electromagnet; 7. limit member; 8. guide rod; 9. spring; 10. armature. DETAILED DESCRIPTION
[0020] 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.
[0021] See also Figure 1-5 In the embodiment of the utility model, an automatic closing mechanism for an air inlet comprises a shell 3 and a cover plate 2 installed at the end of the shell 3. A plurality of push rods 4 for controlling the telescopic movement of the cover plate 2 are arranged in the shell 3. The number of the push rods 4 is not limited. In the present embodiment, preferably, the number of the push rods 4 is four, and the upper ends of the four push rods 4 are connected to the cover plate 2, and the lower ends of the four push rods 4 are connected to the inner wall of the shell 3; a spring 9 for resetting the cover plate 2 is arranged between the cover plate 2 and the shell 3, an electromagnet 6 and a limiter 7 are installed in the shell 3, and the number of the electromagnet 6 is not limited. In the present embodiment, preferably, the number of the electromagnet 6 is two, and the two electromagnets 6 are symmetrically arranged on the inner wall of the shell 3, and the two electromagnets 6 are close to the upper end of the shell 3, a guide rod 8 is installed at the lower end of the cover plate 2, and the end of the guide rod 8 passes through the limiter 7 to be connected with the armature 10, and the armature 10 is located below the electromagnet 6.
[0022] See also Figure 1 and Figure 3 In one embodiment, in order to facilitate fixing the position of the wire and facilitate wiring, in this embodiment, preferably, the electromagnet 6 and the push rod 4 are both connected to the wire, and the outer wall of the shell 3 is provided with a wire outlet locking piece 1, and the wires of the electromagnet 6 and the push rod 4 are both passed through the outside of the shell 3 from the wire outlet locking piece 1.
[0023] Specifically, by connecting one end of the wire to the electromagnet 6 and the push rod 4 respectively, and then passing the other end of the wire through the wire outlet locking piece 1, the position of the wire is fixed. At the same time, the wire can make the electromagnet 6 magnetic after being energized, and at the same time, the wire can make the push rod 4 reverse after being energized, which greatly improves the efficiency of lifting and lowering the cover 2. The principles of the electromagnet 6 and the push rod 4 after being energized are all existing technologies and will not be elaborated on here.
[0024] See also Figure 1-5 In one embodiment, in order to control the cover plate 2 to quickly reset, in this embodiment, preferably, a plurality of spring hooks 5 are installed at the lower end of the cover plate 2, the spring hooks 5 are connected to one end of the spring 9, and the other end of the spring 9 is fixed to the inner wall of the shell 3.
[0025] Specifically, the initial length of the spring 9 is just enough to fix the cover plate 2 to the air inlet of the shell 3. When the cover plate 2 rises and is in a fixed state, the spring 9 is also in a stretched state. When the position of the cover plate 2 is not fixed, the spring 9 can also drive the cover plate 2 to reset while resetting.
[0026] See also Figure 2 In one embodiment, in order to prevent the cover plate 2 from lateral displacement when it is raised or lowered, in this embodiment, preferably, the limit member 7 is fixed to the inner wall of the shell 3 by bolts, and a through hole is provided on the limit member 7 for the guide rod 8 to pass through, so that the limit member 7 and the guide rod 8 can interact with each other to prevent the cover plate 2 from lateral displacement when it is raised or lowered, thereby ensuring that the cover plate 2 is in a vertical lifting state when it is raised or lowered.
[0027] The working principle and use process of the utility model are as follows: when air intake is needed, when the air inlet automatic closing mechanism is opened, the four push rods 4 are energized to rotate forward, push the cover plate 2 to lift the cover plate 2, and the cover plate 2 is separated from the shell body 3, and the air inlet automatic closing mechanism is in the open state, and the spring 9 is in the pulled state; the two electromagnets 6 are energized, and two of them respectively attract the armature 10; the four push rods 4 are energized to reverse, and the push rods 4 fall down. At this time, since the electromagnets 6 firmly attract the armature 10, the guide rod 8 supports the cover plate 2 in the open state; when the air inlet automatic closing mechanism needs to be closed, the two electromagnets 6 lose power, release the armature 10, and under the pulling force of the spring 9, the cover plate 2 quickly falls, the cover plate 2 contacts with the shell body 3, and the air inlet automatic closing mechanism is closed.
[0028] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
[0029] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.
Claims
1. An air inlet automatic closing mechanism, comprising a housing (3) and a cover plate (2) mounted on an end of the housing (3), characterized in that: A plurality of push rods (4) for controlling the telescopic movement of the cover plate (2) are arranged in the shell (3); a spring (9) for resetting the cover plate (2) is arranged between the cover plate (2) and the shell (3); an electromagnet (6) and a limiter (7) are installed in the shell (3); a guide rod (8) is installed at the lower end of the cover plate (2); the end of the guide rod (8) passes through the limiter (7) and is connected to an armature (10); and the armature (10) is located below the electromagnet (6).
2. The air inlet automatic closing mechanism according to claim 1, characterized in that: The electromagnet (6) and the push rod (4) are both connected to wires, and an outlet wire locking piece (1) is provided on the outer side wall of the housing (3). The wires of the electromagnet (6) and the push rod (4) are both passed through the outlet wire locking piece (1) and out of the housing (3).
3. The air inlet automatic closing mechanism according to claim 1, characterized in that: A plurality of spring hooks (5) are installed at the lower end of the cover plate (2), the spring hooks (5) are connected to one end of the spring (9), and the other end of the spring (9) is fixed to the inner wall of the housing (3).
4. The air inlet automatic closing mechanism according to claim 1, characterized in that: The limiting member (7) is fixed to the inner wall of the housing (3) by means of bolts, and a through hole is provided on the limiting member (7) for the guide rod (8) to pass through.
5. The air inlet automatic closing mechanism according to claim 1, characterized in that: The number of the electromagnets (6) is two, and the two electromagnets (6) are symmetrically arranged on the inner wall of the shell (3), and the two electromagnets (6) are both close to the upper end of the shell (3).
6. The air inlet automatic closing mechanism according to claim 1, characterized in that: There are four push rods (4), the upper ends of the four push rods (4) are connected to the cover plate (2), and the lower ends of the four push rods (4) are connected to the inner wall of the shell (3).