Safety valve capable of adjusting pressure

Abstract

The utility model provides a safety valve capable of adjusting pressure. The safety valve comprises a valve body, an exhaust assembly, an air inlet 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, and a second valve cavity is formed in the second 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; an air inlet is formed in the second valve body. The air inlet assembly comprises 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; under the action of the air inlet assembly and the air outlet assembly, the safety valve can achieve air inlet and air outlet, and then the pressure in the cabin body can be adjusted; meanwhile, the first valve body is provided with the lifting assembly, under the action of the lifting assembly, the exhaust valve rod can be jacked, separation of the exhaust hood and the first valve body is achieved, and under the emergency situation, failure of the safety valve can be avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of safety valves, in particular to a safety valve capable of adjusting pressure. BACKGROUND

[0002] During ocean transportation, a ship may pass through hot and cold regions, and therefore a safety valve needs to be installed to adjust the pressure in a cabin. The safety valve in the prior art is sealed by flexible material, such as rubber, and the medium transported each time may be different. Some medium may react with the flexible material, or the flexible material may adhere to the valve body when the temperature in the valve body is high, so that the safety valve cannot adjust the pressure. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the above technical problems, the application provides a safety valve capable of adjusting pressure, which comprises a valve body, an exhaust assembly, an air inlet 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; the first valve body is formed with an exhaust port; the second valve body is formed with an air inlet port;

[0005] The exhaust assembly comprises 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 the top end is fixedly connected with the exhaust cover;

[0006] The air inlet assembly comprises an air inlet valve rod and an air inlet valve plate; the air inlet valve plate is fixedly connected with the air inlet valve rod and covers the air inlet port; the air inlet valve rod is movably arranged in the second valve cavity;

[0007] The lifting assembly is arranged on the first valve body and can lift the exhaust valve rod to realize the separation of the exhaust cover and the first valve body.

[0008] In some embodiments of the application, 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 lift the exhaust valve rod, so that the exhaust cover is away from the first valve body.

[0009] In some embodiments of the present application, the rotating lifting part comprises 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 on the connecting part by fasteners; the stop part protrudes from the top surface of the rotating part.

[0010] In some embodiments of the present application, further comprising 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.

[0011] In some embodiments of the present application, the exhaust cover comprises 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 in a conical shape.

[0012] In some embodiments of the present application, further comprising a guide assembly; the guide assembly is arranged in the second valve cavity and the upper part is fixed with the second valve body; the lower part of the guide assembly is a hollow structure with an opening facing the air inlet valve rod.

[0013] In some embodiments of the present application, further comprising a fireproof net; the fireproof net is arranged at the air inlet of the second valve body.

[0014] In some embodiments of the present application, the fireproof net is arranged on the top of the second valve cavity.

[0015] In some embodiments of the present application, the air inlet assembly is made of rigid material.

[0016] In some embodiments of the present application, the exhaust assembly is made of rigid material.

[0017] Compared with the prior art, the adjustable pressure safety valve has the following advantages and beneficial effects: the adjustable pressure safety valve comprises a valve body, an exhaust assembly, an air inlet 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 and a second valve cavity is formed in the second valve body; the exhaust assembly comprises 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 the top end is fixed with the exhaust cover; an air inlet is formed on the second valve body; the air inlet assembly comprises an air inlet valve rod and an air inlet valve plate; the air inlet valve plate is fixed on the air inlet valve rod and covers the air inlet; the air inlet valve rod is movably arranged in the second valve cavity; under the action of the air inlet assembly and the exhaust assembly, the safety valve can realize air inlet and exhaust, thereby adjusting the pressure in the cabin body; at the same time, the lifting assembly is arranged on the first valve body; under the action of the lifting assembly, the exhaust valve rod can be lifted to realize the separation of the exhaust cover and the first valve body, and in an emergency, the safety valve can be prevented from failing.

[0018] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the application and together with the description, serve to explain the principles of the application. In the drawings:

[0020] Figure 1 is a structural schematic diagram of a pressure-adjustable safety valve provided by an exemplary embodiment of the present application;

[0021] Figure 2 is a front view of a pressure-adjustable safety valve provided by an exemplary embodiment of the present application;

[0022] Figure 3 is a sectional view of a pressure-adjustable safety valve provided by an exemplary embodiment of the present application;

[0023] Figure 4 is a right view of a pressure-adjustable safety valve provided by an exemplary embodiment of the present application.

[0024] In the drawings:

[0025] 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 grip; 402, connecting part; 403, rotating lifting part; 4031, mounting part; 4032, rotating part; 4033, stop part; 500, air intake assembly; 501, air intake valve rod; 502, air intake valve plate; 600, guide assembly; 700, fireproof net. DETAILED DESCRIPTION

[0026] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings 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 protection 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.

[0027] During the ocean transportation, the ship may pass through hot and cold regions, so it is necessary to install a safety valve to adjust the pressure in the cabin. The safety valve in the prior art uses flexible material such as rubber for sealing, and the medium transported each time may be different. Some media may react with the flexible material, or the flexible material may adhere to the valve body when the temperature in the valve body is high, so that the safety valve cannot adjust the pressure.

[0028] Therefore, an example embodiment of the present application provides a safety valve capable of adjusting pressure, which comprises a valve body, an exhaust assembly, an air intake assembly, and a lifting assembly. The valve body comprises 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 comprises 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 fixed to the top of the exhaust cover. The second valve body forms an air intake port. The air intake assembly comprises an air intake valve rod and an air intake valve plate. The air intake valve plate is fixed to the air intake valve rod and covers the air intake port. The air intake valve rod is movably arranged in the second valve cavity. Under the action of the air intake assembly and the exhaust assembly, the safety valve can realize air intake and exhaust, thereby adjusting the pressure in the cabin. At the same time, the first valve body is provided with the lifting assembly. Under the action of the lifting assembly, the exhaust valve rod can be lifted to separate the exhaust cover from the first valve body, thereby avoiding failure of the safety valve in an emergency.

[0029] An example embodiment of the present application provides a safety valve capable of adjusting pressure, as shown in Figures 1 to 4 The safety valve comprises a valve body, an exhaust assembly 300, an air intake assembly 500, 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 forms a first valve cavity 101 inside. The second valve body 200 forms a second valve cavity 201 inside. The first valve body 100 forms an exhaust port on the upper part, and the exhaust assembly 300 covers the exhaust port. The exhaust assembly 300 comprises an exhaust valve rod 301 and an exhaust cover 302. The exhaust cover 302 covers the exhaust port. The exhaust valve rod 301 is movably arranged in the first valve cavity 101 and is fixed to the top of the exhaust cover 302. Preferably, the first valve body 100 is provided with ribs or rib plates supporting the exhaust valve rod 301. The exhaust valve rod 301 is movably connected to the ribs or rib plates of the first valve body 100 through a guide sleeve.

[0030] A vent flange 102 is provided on the top of the first valve body 100. The vent flange 102 is detachably connected to the first valve body 100 by fasteners to facilitate internal maintenance of the first valve body 100. A vent cover 302 is provided on top of the vent flange 102. Preferably, the vent cover 302 includes a first vent section and a second vent section; the lower end face of the first vent section is smaller than the upper end face; the second vent section is provided on the upper end face of the first vent section and is conical. Preferably, both the vent cover 302 and the vent valve stem 301 are made of rigid material. Thus, firstly, the exhaust hood 302 provides rain protection, preventing rainwater from entering between the second exhaust section and the exhaust flange 102; secondly, even if the temperature inside the valve body rises, the exhaust hood will not stick to the valve body, thus not affecting the performance of the safety valve; when the pressure inside the valve body increases, the exhaust valve stem 301 can lift the exhaust hood 302, moving it away from the exhaust flange 102, forming a channel for gas flow between the exhaust hood 302 and the exhaust flange 102 to regulate the pressure inside the chamber and valve body. The discharged gas can flow along the exhaust hood 302 to the top of the exhaust hood 302.

[0031] An air inlet is formed on the second valve body 200; an air inlet assembly 500 is provided at the air inlet, and the air intake direction is as follows: Figure 1 As indicated by the direction of the middle arrow. Figure 3 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. Preferably, both the air intake valve plate 502 and the air intake valve plate 501 are made of rigid material. 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 or regulate the pressure inside the valve body and inside the chamber.

[0032] To prevent the safety valve from malfunctioning in an emergency, a lifting assembly 400 is further provided on the first valve body 100. The lifting assembly 400 can lift the exhaust valve stem 301, and further lift the exhaust hood 302, to prevent the inability to regulate the pressure inside the chamber due to the failure of the intake and exhaust assemblies in an emergency. Figure 1 and 3As shown, the lifting assembly 400 comprises a rotating handle 401, a connecting part 402 and a rotating lifting part 403; the connecting part 402 penetrates through the first valve cavity 101, and both ends thereof are rotationally connected with the first valve body 100; one end of the connecting part 402 extends out of the first valve cavity 101, and the extending end is fixedly connected with the rotating handle 401; one end of the rotating lifting part 403 is fixedly connected with the connecting part 402 located in the first valve cavity 101, and the other end thereof is located below the exhaust valve rod 301; when an external force acts on the rotating handle 401, the rotating handle 401 can drive the connecting part 402 to rotate, and further drive the free end of the rotating lifting part 403 to rotate towards the exhaust valve rod 301; after the rotating lifting part 403 further rotates, the exhaust valve rod 301 can be jacked up, so that the exhaust cover 302 is away from the first valve body 100, and an exhaust passage is formed between the exhaust cover 302 and the first valve body 100, so that the gas in the valve body can be discharged through the exhaust passage to balance or adjust the pressure in the cabin body; in an emergency, the safety valve can be prevented from failing, and the safety problem caused by the failure of the safety valve can be avoided.

[0033] Further, the rotating handle 401 can be a torque wrench; when the exhaust cover 302 is jacked up through the rotating handle 401, the rotating force for jacking up the exhaust cover 302 can be tested, so as to calculate whether the exhaust valve rod 301 needs to be counterweighted and the weight of the counterweight.

[0034] For example, with reference to Figure 3 The rotating lifting part 403 comprises an installation part 4031, a rotating part 4032 and a stop part 4033 connected in sequence; the installation part 4031 is sleeved on the connecting part 402 and is fixedly connected with the connecting part 402 through fasteners; the stop part 4033 protrudes from the top surface of the rotating part 4032, so that the stop groove is formed between the rotating part 4032, the stop part 4033 and the installation part 4031, which can prevent the exhaust valve rod 301 from being pulled out during the process of jacking up the exhaust valve rod 301.

[0035] In order to facilitate the movement of the valve rod, the safety valve further comprises a guide assembly 600; the guide assembly 600 is arranged in the second valve cavity 201, and the upper part thereof is fixedly connected with the second valve body 200; the lower part of the guide assembly 600 is a hollow structure with an opening facing the intake valve rod, and forms a cavity for accommodating the intake valve rod 501. In a non-intake state, the end part of the intake valve rod 501 is accommodated in the cavity of the guide assembly 600; when the intake valve rod 501 moves upward, the intake valve rod 501 can move along the cavity of the guide assembly 600, so as to guide the movement of the intake valve rod 501.

[0036] Preferably, the safety valve further comprises a fireproof net 700; the fireproof net 700 is arranged at the air inlet of the second valve body 200 and the top of the second valve cavity 201, thus, the fire can be prevented from transferring to the inside of the valve body.

[0037] In this application, the terms "comprise", "contain" or any other variant thereof are intended to cover a non-exclusive inclusion, so that an article or device that comprises a list of elements does not only include those elements, but also other elements not explicitly listed, or further includes elements inherent in such article or device. Without more limitations, the elements defined by the statement "comprise" do not exclude the presence of additional identical elements in the article or device that includes the elements.

[0038] Although the preferred embodiments of the present application have been described, those skilled in the art who once understand the basic creative concept can make additional changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0039] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A pressure-adjustable safety valve, characterized in that, Includes valve body, exhaust assembly, intake assembly, and lift assembly; The valve body includes a first valve body and a second valve body arranged side by side and interconnected with each other; a first valve cavity is formed inside the first valve body; a second valve cavity is formed inside the second valve body; an exhaust port is formed on the first valve body; and an air inlet is formed on the second valve body. The exhaust assembly includes an exhaust valve stem and an exhaust cover; the exhaust cover is fitted over the exhaust port; the exhaust valve stem is movably disposed within the first valve chamber, and its top end is fixedly connected to the exhaust cover; The intake assembly includes an intake valve stem and an intake valve plate; the intake valve plate is fixed to the intake valve stem and covers the intake port; the intake valve stem is movably disposed within the second valve chamber. The lifting component is mounted on the first valve body and can lift the exhaust valve stem to separate the exhaust cover from the first valve body.

2. The adjustable pressure safety valve according to claim 1, characterized in that, The lifting assembly includes a rotating grip, a connecting part, and a rotating lifting part; the connecting part passes through the first valve cavity and is rotatably connected to the first valve body; one end of the connecting part extends out of the first valve cavity, and the rotating grip is fixedly connected to the extended end; one end of the rotating lifting part is fixedly connected to the connecting part located inside the first valve cavity, and the other end is located below the exhaust valve rod; when an external force is applied to the rotating grip, causing the rotating grip to rotate, it can drive 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.

3. The adjustable pressure safety valve according to claim 2, characterized in that, 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 fixed to the connecting part by fasteners; the stop part protrudes from the top surface of the rotating part.

4. The adjustable pressure safety valve according to claim 1, characterized in that, It further includes an exhaust flange; the exhaust flange is mounted on top of the first valve body; the exhaust hood is disposed on top of the exhaust flange.

5. The adjustable pressure safety valve according to claim 1, characterized in that, The exhaust hood includes a first exhaust section and a second exhaust section; the lower end face of the first exhaust section is smaller than the upper end face; the second exhaust section is disposed on the upper end face of the first exhaust section and is conical in shape.

6. The adjustable pressure safety valve according to claim 1, characterized in that, It also includes a guide assembly; the guide assembly is disposed in the second valve cavity and its upper part is fixedly connected to the second valve body; the lower part of the guide assembly is a hollow structure with an opening facing the intake valve stem.

7. The adjustable pressure safety valve according to claim 6, characterized in that, It further includes a fireproof mesh; the fireproof mesh is installed at the air inlet of the second valve body.

8. The adjustable pressure safety valve according to claim 7, characterized in that, The fireproof mesh is installed at the top of the second valve chamber.

9. The adjustable pressure safety valve according to claim 1, characterized in that, The air intake assembly is made of a rigid material.

10. The adjustable pressure safety valve according to claim 1, characterized in that, The exhaust assembly is made of rigid material.

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