Portable gas stove valve with double overpressure devices

Abstract

A portable gas stove valve provided with double overpressure devices comprises a valve body, a valve cover, a first overpressure device and a second overpressure device, and the valve body comprises a gas inlet connector, a gas guide channel, a gas inlet cavity, a first overpressure device cavity and a second overpressure device cavity. The first overpressure device cavity and the second overpressure device cavity are parallel and communicate with the air guide channel through the first air hole and the second air hole correspondingly. The first overpressure device and the second overpressure device are arranged in the first overpressure device cavity and the second overpressure device cavity respectively, and the first overpressure device acts first. A first overpressure device cavity, a second overpressure device cavity, a first overpressure device and a second overpressure device are arranged; and when the first overvoltage device fails, the second overvoltage device plays a role, so that the potential safety hazard is eliminated.

Description

Technical Field

[0001] The utility model relates to a cardboard furnace valve. Background Art

[0002] At present, the existing technology is Chinese patent 202320981132.1, a card-type furnace valve with a locking device and a card-type furnace, a card-type furnace valve with a locking device, including a valve body with an upper opening, a valve cover, an overpressure device and a springboard, the valve body is provided with an overpressure device cavity; the overpressure device includes a push rod, the springboard includes a body, a first jump edge, a second jump edge and a third jump edge, the body is hinged with the valve body, the overpressure device is arranged in the overpressure device cavity, and the push rod cooperates with the third jump edge; the body is also provided with a stop plate; it also includes a locking member, the locking member is hinged with the valve body; under normal conditions, the locking member fits with the rear end face of the stop plate, and the third jump edge fits with the lower end of the overpressure device cavity; under the overpressure state, the push rod extends, and the lower end of the locking member cooperates with the third jump edge. The problem is that when the overpressure device fails, the springboard cannot move to achieve bottle withdrawal, which poses a safety hazard. Utility Model Content

[0003] The utility model aims to provide a card-type furnace valve with double overpressure devices, which has the characteristics of two overpressure devices and eliminates potential safety hazards.

[0004] The utility model is realized in this way: a card-type furnace valve with a double overpressure device is provided, which is special in that it comprises a valve body, a valve cover, a first overpressure device and a second overpressure device,

[0005] The valve body comprises an air inlet joint, an air guide channel, an air inlet cavity, a first overpressure device cavity and a second overpressure device cavity, the air guide channel is connected with the air inlet cavity through a pressure stabilizing hole, the first overpressure device cavity and the second overpressure device cavity are parallel, and the first air hole and the second air hole are connected with the air guide channel respectively;

[0006] The first overpressure device and the second overpressure device are respectively arranged in the first overpressure device cavity and the second overpressure device cavity, and the first overpressure device is activated first.

[0007] The special feature of the described card-type furnace valve with double overpressure devices is that when the pressure in the air guide channel is 0.48-0.53MPa, the first overpressure device is activated; when the first overpressure device fails, the second overpressure device is activated when the pressure increases to 0.58-0.63MPa.

[0008] The special feature of the cartridge furnace valve provided with a double overpressure device is that the diameter of the air guide channel gradually increases from the air inlet end to the other end.

[0009] The special feature of the cartridge furnace valve provided with double overpressure devices is that the second overpressure device is adjacent to the pressure stabilizing hole.

[0010] The special feature of the described card-type furnace valve with double overpressure devices is that the second overpressure device chamber and the first overpressure device chamber are arranged in sequence from the air inlet end to the closed end of the air guide channel.

[0011] The above-mentioned card-type furnace valve with double overpressure devices is special in that: the first overpressure device includes a first push rod, a first spring and a first nut, the first push rod includes a first sealing head, a first sealing body and a first movable rod, and the first nut includes a first spring cavity with an upper opening and a first guide hole; the first sealing head is sealed with the first air hole, the first sealing body is slidably matched with the first overpressure device cavity and sealed, the first nut is screwed with the first overpressure device cavity, the first spring is matched with the top plate of the first overpressure device cavity and the first spring cavity, and the first movable rod is slidably matched with the first guide hole;

[0012] The second overpressure device includes a second push rod, a second spring and a second nut. The second push rod includes a second sealing head, a second sealing body and a second movable rod. The second nut includes a second spring cavity with an upper opening and a second guide hole. The second sealing head is sealed with the second air hole, the second sealing body is slidably matched with and sealed in the second overpressure device cavity, the second nut is threaded with the second overpressure device cavity, the second spring is matched with the top plate of the second overpressure device cavity and the second spring cavity, and the second movable rod is slidably matched with the second guide hole.

[0013] The special feature of the cartridge furnace valve provided with a double overpressure device is that the elastic force of the first spring is smaller than the elastic force of the second spring.

[0014] The utility model discloses a card-type furnace valve with double overpressure devices, a first overpressure device cavity and a second overpressure device cavity, and a first overpressure device and a second overpressure device are provided; when the first overpressure device fails, the second overpressure device takes effect, thereby eliminating potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the utility model.

[0016] Figure 2 yes Figure 1 A-A view of.

[0017] Figure 3 It is one of the three-dimensional exploded views of the utility model.

[0018] Figure 4 This is the second three-dimensional exploded view of the present utility model.

[0019] Figure 5 It is a stereogram of the utility model. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figure 1 , Figure 2 As shown, a card furnace valve with a double overpressure device includes a valve body 1, a valve cover 2, a pressure stabilizing assembly 3, a first overpressure device 4 and a second overpressure device 5.

[0023] The valve body 1 includes an air inlet connector 11, an air guide channel 12, an air inlet cavity 13, a first overpressure device cavity 141 and a second overpressure device cavity 142. The air guide channel 12 is connected to the air inlet cavity 13 through a pressure stabilizing hole. The first overpressure device cavity 141 and the second overpressure device cavity 142 are parallel and connected to the air guide channel 12 through a first air hole 1411 and a second air hole 1421 respectively.

[0024] The first overpressure device 4 and the second overpressure device 5 are disposed in the first overpressure device cavity 141 and the second overpressure device cavity 142 respectively, and the first overpressure device 4 is activated first.

[0025] When the pressure in the air guide channel 12 is 0.48-0.053 MPa, the first overpressure device 4 is activated; when the first overpressure device 4 fails, the second overpressure device 5 is activated when the pressure increases to 0.58-0.63 MPa.

[0026] As a further improvement of the present invention: the diameter of the air guide channel 12 gradually increases from the air inlet end to the other end, and the first overpressure device cavity 141 is located at the end of the air guide channel 12 with the largest diameter.

[0027] The second overpressure device 5 is adjacent to the pressure-stabilizing hole, that is, the second overpressure device cavity 142 is adjacent to the pressure-stabilizing hole.

[0028] As a further improvement of the present invention: the second overpressure device cavity 142 and the first overpressure device cavity 141 are arranged in sequence from the air inlet end to the closed end of the air guide channel 12.

[0029] The first overpressure device 4 includes a first push rod 41, a first spring 42 and a first nut 43. The first push rod 41 includes a first sealing head 411, a first sealing body 412 and a first movable rod 413.

[0030] The first nut 43 includes a first spring cavity 431 with an upper opening, a first guide hole 432, and a hexagonal countersunk hole 433 provided at the lower end; the first sealing head 411 is sealed with the first air hole 1411, the first sealing body 412 is slidably matched and sealed with the first overpressure device cavity 141, the first nut 43 is screwed with the internal thread at the lower end of the first overpressure device cavity 141, the first spring 42 is matched with the top plate of the first overpressure device cavity 141 and the first spring cavity 431, and the first movable rod 413 is slidably matched with the first guide hole 432;

[0031] The second overpressure device 5 includes a second push rod, a second spring and a second nut. The second push rod includes a second sealing head, a second sealing body and a second movable rod. The second nut includes a second spring cavity with an upper opening and a second guide hole. The second sealing head is sealed with the second air hole, the second sealing body is slidably matched with and sealed in the second overpressure device cavity 142, the second nut is threaded with the second overpressure device cavity 142, the second spring is matched with the top plate of the second overpressure device cavity 142 and the second spring cavity, and the second movable rod is slidably matched with the second guide hole.

[0032] As a further improvement of the present invention: the elastic force of the first spring 42 is smaller than the elastic force of the second spring.

[0033] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cardboard furnace valve with a double overpressure device, characterized in that: The valve comprises a valve body, a valve cover, a first overpressure device and a second overpressure device, The valve body comprises an air inlet joint, an air guide channel, an air inlet cavity, a first overpressure device cavity and a second overpressure device cavity, the air guide channel is connected with the air inlet cavity through a pressure stabilizing hole, the first overpressure device cavity and the second overpressure device cavity are parallel, and the first air hole and the second air hole are connected with the air guide channel respectively; The first overpressure device and the second overpressure device are respectively arranged in the first overpressure device cavity and the second overpressure device cavity, and the first overpressure device is activated first.

2. A cardboard furnace valve with a double overpressure device according to claim 1, characterized in that: When the pressure in the air guide channel is 0.48-0.53MPa, the first overpressure device is activated; when the first overpressure device fails, the second overpressure device is activated when the pressure increases to 0.58-0.63MPa.

3. The card-type furnace valve with a double overpressure device according to claim 1, characterized in that: The diameter of the air guide channel gradually increases from the air inlet end to the other end.

4. The card-type furnace valve with a double overpressure device according to claim 1, characterized in that: The second overpressure device is adjacent to the voltage-stabilizing hole.

5. The card-type furnace valve with a double overpressure device according to claim 1, characterized in that: The second overpressure device cavity and the first overpressure device cavity are arranged in sequence from the air inlet end to the closed end of the air guide channel.

6. A cardboard furnace valve with a double overpressure device according to claim 1, 2, 3, 4 or 5, characterized in that: The first overpressure device comprises a first push rod, a first spring and a first nut, the first push rod comprises a first sealing head, a first sealing body and a first movable rod, the first nut comprises a first spring cavity with an upper opening and a first guide hole; the first sealing head is sealed with the first air hole, the first sealing body is slidably matched with the first overpressure device cavity and sealed, the first nut is screwed with the first overpressure device cavity, the first spring is matched with the top plate of the first overpressure device cavity and the first spring cavity, and the first movable rod is slidably matched with the first guide hole; The second overpressure device includes a second push rod, a second spring and a second nut. The second push rod includes a second sealing head, a second sealing body and a second movable rod. The second nut includes a second spring cavity with an upper opening and a second guide hole. The second sealing head is sealed with the second air hole, the second sealing body is slidably matched with and sealed in the second overpressure device cavity, the second nut is threaded with the second overpressure device cavity, the second spring is matched with the top plate of the second overpressure device cavity and the second spring cavity, and the second movable rod is slidably matched with the second guide hole.

7. The card-type furnace valve with a double overpressure device according to claim 6, characterized in that: The elastic force of the first spring is smaller than the elastic force of the second spring.

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