Anti-freezing safety valve

Abstract

The utility model provides an anti-freezing safety valve. The anti-freezing safety valve comprises a valve body, an exhaust assembly and a lifting assembly. The valve body comprises a first valve body and a second valve body which are arranged side by side and communicate with each other. A first valve cavity is formed in the first valve body; the exhaust assembly comprises an exhaust valve rod and an exhaust hood; the exhaust hood is arranged at the top of the first valve body; the exhaust valve rod is movably arranged in the first valve cavity, and the top end is fixedly connected with the exhaust hood; the lifting assembly comprises a rotary holding part, a connecting part and a rotary lifting part; the connecting part penetrates through the first valve cavity, and a rotary holding part is fixedly connected to the extending end of the connecting part; one end of the rotary lifting part is fixedly connected to the connecting part located in the first valve cavity, and the other end of the rotary lifting part is located below the exhaust valve rod. When external force acts on the rotary holding part to enable the rotary holding part to rotate, the free end of the rotary lifting part can be driven to jack the exhaust valve rod, so that the exhaust hood is far away from the first valve body, the pressure in the cabin body can be adjusted, and the cabin body structure is prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety valves, in particular to a freezing-proof safety valve. BACKGROUND

[0002] Due to the thermal expansion and contraction performance of the medium, the safety valve is often installed at the cabin of the ship for adjusting the pressure in the cabin. However, since the ship may pass through hot and cold regions during transportation, in the prior art, when the ship passes through the cold region, the valve body of the safety valve will be frozen at the exhaust position and the valve body under the action of cold air flow, which causes the safety valve to be unable to normally adjust the pressure in the cabin. After the exhaust position and the valve body are frozen, the pressure in the cabin cannot be released or adjusted in time, which may cause the cabin structure to be damaged or even cause serious accidents such as explosion. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the above technical problems, the present application provides a freezing-proof safety valve, which comprises a valve body, an exhaust assembly and a lifting assembly.

[0004] The valve body comprises a first valve body and a second valve body arranged side by side and communicated with each other; the first valve body forms a first valve cavity inside; the second valve body forms a second valve cavity inside; and the first valve body is formed with an exhaust port.

[0005] The exhaust assembly comprises an exhaust valve rod and an exhaust cover; the exhaust cover is covered on the exhaust port; and the exhaust valve rod is movably arranged in the first valve cavity and is fixedly connected with the exhaust cover at the top end.

[0006] The lifting assembly comprises a rotating holding part, a connecting part and a rotating lifting part; the connecting part penetrates through the first valve cavity and is rotationally connected with the first valve body; one end of the connecting part extends out of the first valve cavity, and a rotating holding part is fixedly connected on the extended end; one end of the rotating lifting part is fixedly connected on the connecting part in the first valve cavity, and the other end is located below the exhaust valve rod; when an external force acts on the rotating holding part to rotate the rotating holding part, the free end of the rotating lifting part can lift the exhaust valve rod, so that the exhaust cover is away from the first valve body.

[0007] In some embodiments of the present application, the rotating lifting part comprises an installation part, a rotating part and a stop part connected in sequence; the installation part is sleeved on the connecting part and is fixedly connected on the connecting part by a fastener; and the stop part protrudes from the top surface of the rotating part.

[0008] In some embodiments of the present application, further comprising a heat preservation cover; the outside of the first valve body is covered with a heat preservation cover.

[0009] In some embodiments of the present application, the outside of the second valve body is covered with a heat preservation cover.

[0010] In some embodiments of the present application, an exhaust flange is further included; the exhaust flange is installed on the top of the first valve body; and the exhaust cover is arranged on the top of the exhaust flange.

[0011] In some embodiments of the present application, the exhaust cover includes a first exhaust part and a second exhaust part; the lower end surface of the first exhaust part is smaller than the upper end surface; and the second exhaust part is arranged on the upper end surface of the first exhaust part and is in a conical shape.

[0012] In some embodiments of the present application, an air inlet assembly arranged in the second valve cavity is further included; an air inlet is formed on the second valve body; the air inlet assembly includes an air inlet valve rod and an air inlet valve plate; the air inlet valve plate is fixedly connected to the air inlet valve rod and covers the air inlet.

[0013] In some embodiments of the present application, a guide assembly is further included; the guide assembly is arranged in the second valve cavity and is fixedly connected to the upper part of the second valve body; and the lower part of the guide assembly is in a hollow structure and forms a cavity for accommodating the air inlet valve rod.

[0014] In some embodiments of the present application, a fireproof net is further included; the fireproof net is arranged at the air inlet of the second valve body.

[0015] In some embodiments of the present application, the fireproof net is arranged on the top of the second valve cavity.

[0016] Compared with the prior art, the anti-freezing safety valve has the following advantages and beneficial effects: the anti-freezing safety valve includes a valve body, an exhaust assembly and a lifting assembly; the valve body includes a first valve body and a second valve body arranged side by side and in communication with each other; the first valve body forms a first valve cavity inside; the exhaust assembly includes an exhaust valve rod and an exhaust cover; the exhaust cover is arranged on the top of the first valve body; the exhaust valve rod is movably arranged in the first valve cavity and is fixedly connected to the top end of the exhaust cover; the lifting assembly includes a rotating holding part, a connecting part and a rotating lifting part; the connecting part penetrates through the first valve cavity and is rotationally connected to the first valve body; one end of the connecting part extends out of the first valve cavity and the extending end is fixedly connected to the rotating holding part; one end of the rotating lifting part is fixedly connected to the connecting part arranged in the first valve cavity and the other end is arranged below the exhaust valve rod; when an external force acts on the rotating holding part, the rotating holding part rotates and drives the free end of the rotating lifting part to lift the exhaust valve rod, so that the exhaust cover is away from the first valve body, thereby the pressure in the cabin body can be adjusted and the cabin body structure damage can be avoided.

[0017] It should be understood that the general description above and the detailed description below are only exemplary and explanatory and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the subject matter of the specification. The drawings merely represent the illustrative embodiments of the specification and their specifications are used to explain the specification. In the drawings:

[0019] Figure 1 is a structural schematic diagram of the anti-freezing safety valve provided by an exemplary embodiment of the present application;

[0020] Figure 2 is a structural schematic diagram of the anti-freezing safety valve provided by an exemplary embodiment of the present application;

[0021] Figure 3 is a front view of the anti-freezing safety valve provided by an exemplary embodiment of the present application;

[0022] Figure 4 is a right view of the anti-freezing safety valve provided by an exemplary embodiment of the present application;

[0023] Figure 5 is a top view of the anti-freezing safety valve provided by an exemplary embodiment of the present application;

[0024] Figure 6 is a Figure 5 is a sectional view at A-A in FIG. 1;

[0025] Figure 7 is a structural schematic diagram of the anti-freezing safety valve provided by an exemplary embodiment of the present application.

[0026] in the drawings:

[0027] 100, first valve body; 101, first valve cavity; 102, exhaust flange; 200, second valve body; 201, second valve cavity; 300, exhaust assembly; 301, exhaust valve rod; 302, exhaust cover; 400, lifting assembly; 401, rotating holding part; 402, connecting part; 403, rotating lifting part; 4031, mounting part; 4032, rotating part; 4033, stop part; 500, intake assembly; 501, intake valve rod; 502, intake valve plate; 600, guide assembly; 700, fireproof net; 800, heat preservation cover. DETAILED DESCRIPTION

[0028] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other at will.

[0029] Due to the thermal expansion and contraction performance of the medium, the safety valve is often installed at the ship cabin for adjusting the pressure in the ship cabin. However, since the ship may pass through hot and cold regions during transportation, in the prior art, when the ship passes through the cold region, the valve body of the safety valve will be frozen at the exhaust position and the valve body under the action of cold air flow, resulting in that it cannot normally adjust the pressure in the cabin. After the exhaust position and the valve body are frozen, the pressure in the cabin cannot be released or adjusted in time, which may cause serious accidents such as cabin structure damage and explosion.

[0030] Based on this, an anti-freezing safety valve is provided in an example embodiment of the present application, which comprises a valve body, an exhaust assembly and a lifting assembly; the valve body comprises a first valve body and a second valve body arranged side by side and communicating with each other; a first valve cavity is formed in the first valve body; the exhaust assembly comprises an exhaust valve rod and an exhaust cover; the exhaust cover is arranged at the top of the first valve body; the exhaust valve rod is movably arranged in the first valve cavity, and the top end thereof is fixedly connected with the exhaust cover; the lifting assembly comprises a rotating holding part, a connecting part and a rotating lifting part; the connecting part penetrates through the first valve cavity and is rotationally connected with the first valve body; one end of the connecting part extends out of the first valve cavity, and the extending end is fixedly connected with the rotating holding part; one end of the rotating lifting part is fixedly connected with the connecting part in the first valve cavity, and the other end is located below the exhaust valve rod; when an external force acts on the rotating holding part to make the rotating holding part rotate, the free end of the rotating lifting part can be lifted to lift the exhaust valve rod, so that the exhaust cover is away from the first valve body, and thus the pressure in the cabin can be adjusted to avoid causing damage to the cabin structure.

[0031] Embodiment 1:

[0032] An anti-freezing safety valve is provided in an example embodiment of the present application, which comprises a valve body, an exhaust assembly and a lifting assembly; the valve body comprises a first valve body and a second valve body arranged side by side and communicating with each other; a first valve cavity is formed in the first valve body; the exhaust assembly comprises an exhaust valve rod and an exhaust cover; the exhaust cover is arranged at the top of the first valve body; the exhaust valve rod is movably arranged in the first valve cavity, and the top end thereof is fixedly connected with the exhaust cover; the lifting assembly comprises a rotating holding part, a connecting part and a rotating lifting part; the connecting part penetrates through the first valve cavity and is rotationally connected with the first valve body; one end of the connecting part extends out of the first valve cavity, and the extending end is fixedly connected with the rotating holding part; one end of the rotating lifting part is fixedly connected with the connecting part in the first valve cavity, and the other end is located below the exhaust valve rod; when an external force acts on the rotating holding part to make the rotating holding part rotate, the free end of the rotating lifting part can be lifted to lift the exhaust valve rod, so that the exhaust cover is away from the first valve body, and thus the pressure in the cabin can be adjusted to avoid causing damage to the cabin structure. Figures 1 to 6As shown, the safety valve comprises a valve body, an exhaust assembly 300, and a lifting assembly 400; the valve body comprises a first valve body 100 and a second valve body 200 arranged side by side and in communication with each other; the first valve body 100 is internally formed with a first valve cavity 101; the second valve body 200 is internally formed with a second valve cavity 201; the upper portion of the first valve body 100 is formed with an exhaust port, and the exhaust port is covered with the exhaust assembly 300. The exhaust assembly 300 comprises an exhaust valve rod 301 and an exhaust cover 302; the exhaust cover 302 is covered on the exhaust port; the exhaust valve rod 301 is movably arranged in the first valve cavity 101, and the top end thereof is fixedly connected with the exhaust cover 302. Preferably, the first valve body 100 is provided with a rib or a rib plate for supporting the exhaust valve rod 301, and the exhaust valve rod 301 is movably connected with the rib or the rib plate of the first valve body 100 through a guide sleeve. The top portion of the first valve body 100 is provided with an exhaust flange 102, and the exhaust flange 102 is detachably connected with the first valve body 100 through fasteners, so as to facilitate the maintenance of the interior of the first valve body 100. The exhaust cover 302 is arranged on the top portion of the exhaust flange 102. Preferably, the exhaust cover 302 comprises a first exhaust portion and a second exhaust portion; the lower end surface of the first exhaust portion is smaller than the upper end surface; the second exhaust portion is arranged on the upper end surface of the first exhaust portion and is in a conical shape. In this way, on the one hand, the exhaust cover 302 can prevent rainwater from entering between the second exhaust portion and the exhaust flange; on the other hand, when the pressure in the valve body increases, the exhaust valve rod 301 can lift the exhaust cover 302, so that the exhaust cover 302 is away from the exhaust flange 102, a channel for gas flow is formed between the exhaust cover 302 and the exhaust flange 102, and the exhaust gas can converge to the top end of the exhaust cover 302 along the exhaust cover 302.

[0033] In order to prevent the exhaust cover 302 and the exhaust flange 102 from freezing when the ship passes through a cold area, the first valve body 100 is further provided with the lifting assembly 400, which can lift the exhaust valve rod 301 and further lift the exhaust cover 302, so as to avoid that the exhaust cover 302 and the exhaust flange 102 cannot adjust the pressure in the cabin when they are frozen. Figure 4 and 6As shown, the lifting assembly 400 includes a rotating gripping part 401, a connecting part 402, and a rotating lifting part 403; the connecting part 402 passes through the first valve cavity 101 and is rotatably connected to the first valve body 100 at both ends; one end of the connecting part 402 extends out of the first valve cavity 101, and the rotating gripping part 401 is fixedly connected to the extended end; one end of the rotating lifting part 403 is fixedly connected to the connecting part 402 located inside the first valve cavity 101, and the other end is located below the exhaust valve stem 301; when an external force is applied to the rotating gripping part 401... When the rotating grip 401 rotates, it can drive the connecting part 402 to rotate, and further drive the free end of the rotating lifting part 403 to rotate in the direction of the exhaust valve rod 301. After the rotating lifting part 403 rotates further, it can lift the exhaust valve rod 301, thereby causing the exhaust cover 302 to move away from the first valve body 100, so that an exhaust channel is formed between the exhaust cover 302 and the first valve body 100, and the gas in the valve body can be discharged through the exhaust channel to balance or regulate the pressure in the cabin.

[0034] Furthermore, the rotating grip 401 can be a torque wrench. When the exhaust hood 302 is lifted by rotating the grip 401, the rotational force of lifting the exhaust hood 302 can be tested, so as to calculate whether the exhaust valve stem 301 needs to be counterweighted and the weight of the counterweight block.

[0035] For example, continue to refer to Figure 6 The rotating lifting part 403 includes a mounting part 4031, a rotating part 4032, and a stop part 4033 connected in sequence. The mounting part 4031 is sleeved on the connecting part 402 and is fixed to the connecting part 402 by fasteners. The stop part 4033 protrudes from the top surface of the rotating part 4032, so that a stop groove is formed between the rotating part 4032, the stop part 4033, and the mounting part 4031, which can prevent the exhaust valve rod 301 from coming off during the process of lifting the exhaust valve rod 301.

[0036] The safety valve further includes an air intake assembly 500 disposed within the second valve chamber 201; exemplary, an air inlet is formed on the second valve body 200; the air intake assembly 500 is disposed at the air inlet, and the air intake direction is as follows: Figure 1 As indicated by the direction of the middle arrow. Figure 6 As shown, the air intake assembly 500 includes an air intake valve stem 501 and an air intake valve plate 502. The air intake valve plate 502 is fixed to the air intake valve stem 501 and covers the air intake port. When the pressure inside the valve body decreases, the gas inside the chamber can push up the air intake valve plate 502 and the air intake valve stem 501, causing the air intake valve plate 502 to move away from the second valve body 200. A channel for gas flow is formed between the air intake valve plate 502 and the second valve body 200 to balance the pressure inside the valve body and inside the chamber.

[0037] To facilitate the movement of the valve stem, the safety valve also includes a guide assembly 600. The guide assembly 600 is disposed within the second valve chamber 201, and its upper part is fixedly connected to the second valve body 200. The lower part of the guide assembly 600 is a hollow structure with an opening facing the intake valve stem, forming a cavity for accommodating the intake valve stem 501. In the non-intake state, the end of the intake valve stem 501 is accommodated within the cavity of the guide assembly 600. When the intake valve stem 501 moves upward, it can move along the cavity of the guide assembly 600 to guide its movement.

[0038] Preferably, the safety valve further includes a fireproof mesh 700; the fireproof mesh 700 is disposed at the air inlet of the second valve body 200 and the top of the second valve chamber 201, thereby preventing flame from being transmitted to the interior of the valve body.

[0039] Example 2:

[0040] Based on the above embodiment 1, the difference between this embodiment and embodiment 1 is that, as follows: Figure 7 As shown, this embodiment also includes a heat insulation cover 800; the outer cover of the first valve body 100 is provided with a heat insulation cover 800. The heat insulation cover 800 includes a heat insulation layer, and a heating tube or heating wire is provided inside the heat insulation layer. After the heating tube or heating wire is energized, it can heat the first valve body 100, so that the first valve body 100 is kept within a preset temperature range. For example, the temperature of the first valve body 100 is kept above 0°C to prevent the first valve body 100 from freezing with the exhaust cover 302.

[0041] Preferably, the outer cover of the second valve body 200 is provided with a heat insulation cover 800. In this case, both the outer surfaces of the first valve body 100 and the second valve body 200 are provided with heat insulation covers 800. The heat insulation covers 800 can heat the first valve body 100 and the second valve body 200, further maintaining the temperature stability of the first valve body 100 and the second valve body 200, and effectively preventing the first valve body 100 from freezing with the exhaust cover 302.

[0042] In this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0043] While the preferred embodiments of the application have been described, additional variations and modifications can be made to these embodiments by those skilled in the art once they have the benefit of the present disclosure without departing from the spirit and scope of the application. Accordingly, it is intended that the appended claims include all such modifications and variations as fall within the scope of the present application.

[0044] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A freeze-proof safety valve characterized by comprising: The valve body, the exhaust assembly, and the lifting assembly are included. The valve body includes a first valve body and a second valve body arranged side by side and in communication with each other; the first valve body forms a first valve cavity inside; the second valve body forms a second valve cavity inside; the first valve body forms an exhaust port thereon; The exhaust assembly includes an exhaust valve rod and an exhaust cover; the exhaust cover covers the exhaust port; the exhaust valve rod is movably arranged in the first valve cavity and is fixed to the top end of the exhaust cover; The lifting assembly includes a rotating holding part, a connecting part, and a rotating lifting part; the connecting part penetrates the first valve cavity and is rotationally connected to the first valve body; one end of the connecting part extends out of the first valve cavity and the extending end is fixed with the rotating holding part; one end of the rotating lifting part is fixed to the connecting part in the first valve cavity and the other end is located below the exhaust valve rod; when an external force acts on the rotating holding part, the rotating holding part rotates and drives the free end of the rotating lifting part to lift the exhaust valve rod, so that the exhaust cover moves away from the first valve body.

2. The freeze-proof safety valve according to claim 1, wherein The rotating lifting part includes a mounting part, a rotating part, and a stop part connected in sequence; the mounting part is sleeved on the connecting part and is fixed to the connecting part by a fastener; the stop part protrudes from the top surface of the rotating part.

3. The freeze-proof safety valve according to claim 1, wherein Further including a heat preservation cover; the first valve body is externally covered with a heat preservation cover.

4. The freeze-proof safety valve according to claim 3, wherein The second valve body is externally covered with a heat preservation cover.

5. The freeze-proof safety valve according to claim 1, wherein Further including an exhaust flange; the exhaust flange is installed on the top of the first valve body; the exhaust cover is arranged on the top of the exhaust flange.

6. The freeze-proof safety valve according to claim 1, wherein The exhaust cover includes a first exhaust part and a second exhaust part; the lower end surface of the first exhaust part is smaller than the upper end surface; the second exhaust part is arranged on the upper end surface of the first exhaust part and is conical.

7. The freeze-proof safety valve according to claim 1, wherein Further including an air inlet assembly arranged in the second valve cavity; the second valve body forms an air inlet port thereon; the air inlet assembly includes an air inlet valve rod and an air inlet valve plate; the air inlet valve plate is fixed to the air inlet valve rod and covers the air inlet port.

8. The freeze-proof safety valve according to claim 7, wherein Further including a guide assembly; the guide assembly is arranged in the second valve cavity and is fixed to the upper part of the second valve body; the lower part of the guide assembly is hollow and forms a cavity for accommodating the air inlet valve rod.

9. The freeze-proof safety valve according to claim 7, wherein Further including a fireproof net; the fireproof net is arranged at the air inlet port of the second valve body.

10. The freeze-proof safety valve according to claim 9, wherein The fireproof net is arranged on the top of the second valve cavity.

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