Valve mechanism independent of electric power

Abstract

The utility model discloses a valve mechanism independent of electric power, which comprises a blade, a central supporting rod penetrates through the middle position of the blade, a torsional spring is sleeved on the surface of the central supporting rod, a sealed metal cavity is arranged on the left side of the blade, an elastic capsule is arranged in the sealed metal cavity, and the elastic capsule is arranged in the sealed metal cavity. A shifting fork is arranged on the right side of the sealed metal cavity, and the side end of the shifting fork is arranged in the sealed metal cavity in a sleeved mode. Through mutual cooperation of the blades, the center supporting rod, the torsional spring, the nut, the sealing metal cavity, the elastic capsule, the shifting fork and the pen cap head, the air-cooling device is installed in a ventilation pipeline of a plateau roadbed in the using process, when the temperature is lower than zero DEG C, water freezes and expands to open a valve to introduce cold air, and the air-cooling effect is achieved. When the temperature is higher than zero DEG C, the valve is closed to prevent hot air from entering without depending on electric drive, and popularization, installation and use are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation and heat exchange in frozen soil engineering, in particular to a valve mechanism that does not rely on electricity. Background Art

[0002] The permafrost on the Qinghai-Tibet Plateau is a soil medium that is extremely sensitive to temperature. It contains abundant underground ice, which melts in the summer and solidifies in the winter. It has the characteristics of shortened freezing days and reduced maximum permafrost depth. The various permafrost layers along the Qinghai-Tibet Highway have strong phenomena of frost heaving, melting and settling. The melting of the permafrost on the plateau has aggravated the ground instability in the permafrost area and triggered more engineering geological problems in the permafrost area.

[0003] The main reason for the damage to the permafrost sections on the plateau is that under the strong radiation conditions on the plateau, the black asphalt pavement absorbs heat strongly, stores heat at a high level, and conducts heat into the permafrost layer under the roadbed for a long time, aggravating the warming and degradation of the permafrost and even melting it, leading to settlement and damage of the roadbed. In addition, the width of the highway subgrade is 24 to 26 meters, and the thickness is about three times that of an ordinary highway, making it more difficult for heat to dissipate.

[0004] In the prior art, in order to solve the above problems, ventilation ducts are usually pre-buried horizontally in the roadbed, insulation layers are laid, and heat pipes are used to dissipate heat. Among these, pre-buried horizontal ventilation ducts are the most engineering operability and practical effectiveness. Their main function is to introduce cold air into the roadbed and take away the heat from solar radiation. However, in summer, the air temperature on the Qinghai-Tibet Plateau is often higher than the temperature in the duct, which has a counter-effect. Therefore, a valve mechanism that does not rely on electricity is set to solve the above problems. Utility Model Content

[0005] Therefore, the purpose of the utility model is to provide a valve mechanism that does not rely on electricity. Through the mutual cooperation of the blades, central support rod, torsion spring, nut, sealed metal chamber, elastic capsule, shift fork and pen cap head, it can be installed in the ventilation duct of the plateau roadbed when in use. When the temperature is below zero degrees, water freezes and expands to open the valve to introduce cold air. When the temperature is above zero degrees, the valve closes to prevent hot air from entering. It does not need to rely on electric drive, which is convenient for promotion, installation and use.

[0006] In order to solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical solutions: a valve mechanism that does not rely on electricity, comprising a blade, a central support rod passing through the middle position of the blade, a torsion spring being fitted on the surface of the central support rod, a sealed metal chamber being arranged on the left side of the blade, and an elastic capsule being arranged in the sealed metal chamber, a shift fork being arranged on the right side of the sealed metal chamber, and the side end of the shift fork being inserted into the interior of the sealed metal chamber.

[0007] As a preferred solution of the valve mechanism that does not rely on electricity described in the utility model, the top end of the central support rod is provided with an external thread, and a nut is arranged above the central support rod;

[0008] Wherein, the nut is connected with the external thread.

[0009] As a preferred solution of the valve mechanism that does not rely on electricity described in the utility model, the front end of the shift fork is connected to a pen cap head;

[0010] Wherein, the pen cap head is in contact with the blade.

[0011] As a preferred solution of the valve mechanism that is not dependent on electricity described in the utility model, a base is provided below the sealed metal chamber, and the sealed metal chamber is engaged in the base.

[0012] As a preferred solution of the valve mechanism that does not rely on electricity described in the utility model, a shell is arranged above the sealed metal chamber, and the shell covers the top surface of the sealed metal chamber;

[0013] Wherein, the shell and the base are engaged with each other.

[0014] As a preferred solution of the valve mechanism that is not dependent on electricity described in the utility model, liquid water is stored in the sealed metal chamber.

[0015] As a preferred solution of the valve mechanism that is not dependent on electricity described in the utility model, the bottom of the base is arc-shaped, and the blades are vertically inserted into the positioning holes on the surface of the base.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] Through the mutual cooperation of the blades, central support rod, torsion spring, nut, sealed metal chamber, elastic capsule, fork and pen cap head, it can be installed in the ventilation duct of the plateau roadbed when in use. When the temperature is below zero degrees, water freezes and expands to open the valve to introduce cold air. When the temperature is above zero degrees, the valve closes to prevent hot air from entering. It does not need to rely on electric drive, and is convenient for promotion, installation and use.

[0018] The blades are butterfly-shaped double flaps, and the blades open and close in a butterfly shape around the central support rod. When the temperature is at or below zero degrees, the liquid water in the sealed metal chamber freezes and the ice squeezes the elastic capsule inward. At this time, the elastic capsule deforms and squeezes the fork, and the fork moves forward. At this time, the fork drives the pen cap head to push the blades, and the blades unfold around the central support rod. At the same time, the blades unfold and drive the torsion spring to tighten. At this time, the blades open to allow cold air to enter. When the temperature is above zero degrees, the liquid water returns to a liquid state, and the elastic capsule is not squeezed by the ice. At this time, the blades lose the force to push, and the torsion spring recovers the deformation and directly drives the blades to rotate ninety degrees around the central support rod. The blades drive the fork back to their position, and the blades return to a closed state. In this way, without relying on electricity, when the temperature is below zero degrees, the water freezes and expands to open the valve to introduce cold air. When the temperature is above zero degrees, the valve closes to prevent hot air from entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 This is a structural diagram of the blade of the utility model in an open state;

[0021] Figure 2 This is a structural diagram of the utility model when the blades are in a closed state.

[0022] In the figure: 1. blade; 2. center support rod; 3. torsion spring; 4. nut; 5. sealed metal chamber; 6. elastic capsule; 7. fork; 8. pen cap; 9. base; 10. outer shell. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0026] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] The utility model provides a valve mechanism that does not rely on electricity. Through the cooperation of the blades, central support rod, torsion spring, nut, sealed metal chamber, elastic capsule, shift fork and pen cap head, when in use, it can be installed in the ventilation duct of the plateau roadbed. When the temperature is below zero degrees, water freezes and expands to open the valve to introduce cold air. When the temperature is above zero degrees, the valve is closed to prevent hot air from entering. It does not need to rely on electric drive, and is convenient for promotion, installation and use.

[0028] Figure 1 , Figure 2 The figure shows the overall structure of an embodiment of a valve mechanism that does not rely on electricity of the utility model. Figure 1 , Figure 2 In this embodiment, a valve mechanism that does not rely on electricity includes a blade 1, a central support rod 2 is passed through the middle position of the blade 1, a torsion spring 3 is sleeved on the surface of the central support rod 2, a sealed metal chamber 5 is arranged on the left side of the blade 1, and an elastic capsule 6 is arranged in the sealed metal chamber 5, a shift fork 7 is arranged on the right side of the sealed metal chamber 5, and the side end of the shift fork 7 is sleeved into the inside of the sealed metal chamber 5;

[0029] During specific use, liquid water is stored in the sealed metal chamber 5, and the liquid water freezes at zero degrees or below zero degrees, thereby providing squeezing force.

[0030] The top of the central support rod 2 is provided with an external thread, and a nut 4 is arranged above the central support rod 2;

[0031] Wherein, the nut 4 is connected with the external thread;

[0032] When in use, the user rotates the nut 4, and the nut 4 is threaded progressively on the outer thread surface, so as to adjust the height of the nut 4, so that the nut 4 can be pressed against the inner top surface of the ventilation duct, and the base 9 is fitted against the bottom surface of the ventilation duct, so that the entire device can be limited in the ventilation duct;

[0033] The front end of the shift fork 7 is connected with a pen cap head 8;

[0034] Wherein, the pen cap head 8 is in contact with the blade 1;

[0035] The front end of the shift fork 7 is connected with a pen cap head 8;

[0036] Wherein, the pen cap head 8 is in contact with the blade 1;

[0037] A base 9 is provided below the sealed metal chamber 5, and the sealed metal chamber 5 is engaged in the base 9;

[0038] A housing 10 is disposed above the sealed metal chamber 5, and the housing 10 covers the top surface of the sealed metal chamber 5;

[0039] The housing 10 and the base 9 are engaged with each other.

[0040] Working principle: the user sets the whole device in the ventilation duct, the blade 1 is a butterfly-shaped double flap, and the blade 1 opens and closes in a butterfly shape around the central support rod 2. When the temperature is zero degrees or below zero, the liquid water in the sealed metal chamber 5 freezes and ices, and the ice squeezes the elastic capsule 6 inward. At this time, the elastic capsule 6 deforms and squeezes the fork 7, and the fork 7 moves forward. At this time, the fork 7 drives the pen cap head 8 to push the blade 1, and the blade 1 unfolds around the central support rod 2. While the blade 1 unfolds, it drives the torsion spring 3 to tighten. At this time, the blade 1 opens to allow cold air to enter. When the temperature is above zero degrees, the liquid water returns to a liquid state, and the elastic capsule 6 is not squeezed by the ice. At this time, the blade 1 loses the force to push, and the torsion spring 3 recovers the deformation and directly drives the blade 1 to rotate ninety degrees around the central support rod 2. The blade 1 drives the fork 7 back to its position, and the blade 1 returns to a closed state. In this way, without relying on electricity, when the temperature is below zero degrees, the water freezes and expands to open the valve to introduce cold air. When the temperature is above zero degrees, the valve is closed to prevent hot air from entering.

[0041] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A valve mechanism that is independent of electricity, comprising a blade (1), characterized in that: A central support rod (2) passes through the middle of the blade (1), a torsion spring (3) is sleeved on the surface of the central support rod (2), a sealed metal chamber (5) is provided on the left side of the blade (1), an elastic capsule (6) is provided in the sealed metal chamber (5), a shift fork (7) is provided on the right side of the sealed metal chamber (5), and a side end of the shift fork (7) is sleeved into the interior of the sealed metal chamber (5).

2. A valve mechanism independent of electricity according to claim 1, characterized in that: The top end of the central support rod (2) is provided with an external thread, and a nut (4) is arranged above the central support rod (2); Wherein, the nut (4) is connected to the external thread.

3. A valve mechanism independent of electricity according to claim 2, characterized in that: The front end of the shift fork (7) is connected to a pen cap head (8); Wherein, the pen cap head (8) is in contact with the blade (1).

4. A valve mechanism independent of electricity according to claim 3, characterized in that: A base (9) is provided below the sealed metal chamber (5), and the sealed metal chamber (5) is engaged in the base (9).

5. A valve mechanism independent of electricity according to claim 4, characterized in that: A shell (10) is arranged above the sealed metal chamber (5), and the shell (10) covers the top surface of the sealed metal chamber (5); Wherein, the housing (10) and the base (9) are engaged with each other.

6. The valve mechanism independent of electricity according to claim 5, characterized in that: Liquid water is stored in the sealed metal chamber (5).

7. The valve mechanism independent of electricity according to claim 6, characterized in that: The bottom of the base (9) is arc-shaped, and the blade (1) is vertically inserted into a positioning hole on the surface of the base (9).

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