A multifunctional one-way valve

Abstract

The invention discloses a multifunctional one-way valve, comprising a valve body, a valve core guide sleeve slidably mounted in a cavity, a valve core is provided on a sliding sleeve outside the valve core guide sleeve, a first sealing ring is fixed on the outer periphery of the valve core adjacent to a conical surface through a valve core nut, a short guide tube is arranged in the valve core guide sleeve, a positioning nut is screwed on an air outlet end, a spring is arranged between the positioning nut and the valve core nut, a guide tube locking nut is screwed on the positioning nut, one end of the short guide tube is cooperatively connected with the guide tube locking nut, the other end of the short guide tube passes through a short guide tube joint and is fastened to an inspection end through the short guide tube joint; a long guide tube that is concentric with and communicated with the short guide tube is connected to the outer end of the guide tube locking nut, a float is provided on the sliding sleeve outside the long guide tube, a magnet sleeve is slidably mounted in the long guide tube, a magnet is fixedly mounted in the magnet sleeve, and an induction iron ring is arranged on the inner side of the bottom end of the float; a traction rope is connected to the end of the magnet sleeve, a color mark is arranged on the traction rope, and the traction rope passes through the long guide tube and the short guide tube.

Description

Technical Field

[0001] The invention relates to the technical field of supporting parts for fire-fighting equipment, in particular to a multifunctional one-way valve. Background Art

[0002] At present, the external pressure storage gas fire fighting system usually stores the fire extinguishing medium separately in a pressure-resistant container at normal pressure. When a fire occurs, the high-pressure gas (usually nitrogen) is introduced through a pipeline through a one-way valve installed on the pressure-resistant container to pressurize the fire extinguishing medium, so that the fire extinguishing medium is ejected from the fire extinguishing medium ejection pipe to extinguish the fire. Since the fire extinguishing medium is stored at normal pressure, it is impossible to use a pressure indicator to detect whether the fire extinguishing medium has leaked during the storage process. At present, the weighing method is usually used for regular inspection, that is, the initial weight of the container after the fire extinguishing medium is filled is recorded. When the inspection period arrives, the container is moved to an electronic scale or other weighing device for weighing, and the weighing data is compared with the initial weight to check whether there is a leak. This detection method has the disadvantages of high labor intensity and great safety hazards. Summary of the invention

[0003] The purpose of the present invention is to provide a multifunctional one-way valve, which can conveniently check the change of the storage amount of the fire extinguishing medium in the container by arranging a float, an induction iron ring, a magnet and a traction rope with a color code, and integrate the one-way valve with the inspection of the storage amount of the fire extinguishing medium into one, which has the advantages of simple structure, convenient operation and good practicality, and solves the problems in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional one-way valve, comprising a valve body 1, a cavity 105 is provided through the valve body 1, one end of the cavity 105 is an inspection end 106 and the other end is an air outlet end 104, an air inlet interface 101 connected to the cavity 105 is provided in the middle of the valve body 1, a valve seat portion 102 is provided in the cavity 105 at the air inlet interface 101 and the air outlet end 104, and a conical surface 103 is provided on the side of the valve seat portion 102 adjacent to the air outlet end 104;

[0005] The cavity 105 is slidably fitted with a valve core guide sleeve 4, and a valve core 3 is slidably sleeved outside the valve core guide sleeve 4. A first sealing ring 17 is fixed to the outer periphery of the valve core 3 adjacent to the conical surface 103 through a valve core nut 16. A short conduit 5 is installed in the valve core guide sleeve 4, and a positioning nut 15 is screwed on the air outlet end 104. A spring 2 is installed between the positioning nut 15 and the valve core nut 16. A conduit locking nut 14 is screwed on the positioning nut 15. One end of the short conduit 5 is connected with the conduit locking nut 14, and the other end of the short conduit 5 penetrates the short conduit. The pipe joint 19 is fastened to the inspection end 106 through the short catheter joint 19; the outer end of the catheter locking nut 14 is connected to a long catheter 13 which is concentric with and connected to the short catheter 5, a float 6 is provided on the outer sliding sleeve of the long catheter 13, a magnet sleeve 10 is slidably installed in the long catheter 13, a magnet 11 is fixedly installed in the magnet sleeve 10, and an induction iron ring 7 is installed on the inner side of the bottom end of the float 6; the end of the magnet sleeve 10 is connected to a traction rope 12, a color mark 1201 is provided on the traction rope 12, and the traction rope 12 passes through the long catheter 13 and the short catheter 5.

[0006] Furthermore, the cavity 105 is provided with a sealing section 107 between the inspection end 106 and the air inlet interface 101 .

[0007] Furthermore, a flange portion 401 is provided on the outer wall of the valve core guide sleeve 4 , and a second sealing ring 18 is provided between the flange portion 401 and the valve core 3 .

[0008] Furthermore, a baffle 8 is installed at the end of the long conduit 13 , and the baffle 8 is fastened to the long conduit 13 by bolts 9 .

[0009] Furthermore: a plurality of through holes 1501 are evenly distributed on the positioning nut 15 .

[0010] Furthermore, a valve cover 20 is screwed on the end of the inspection end 106 , and a receiving cavity 1901 is provided on the short conduit connector 19 . A handle 21 is movably installed in the receiving cavity 1901 , and the handle 21 is connected to the traction rope 12 .

[0011] Further: the color mark 1201 is provided in plurality.

[0012] Furthermore, a third sealing ring 22 is installed between the short conduit connector 19 and the valve core guide sleeve 4 and the sealing section 107 .

[0013] Working principle and beneficial effects of the present invention: A multifunctional one-way valve provided by the present invention is installed at the upper end of a pressure-resistant container for storing a fire-extinguishing medium when in use, and one end of a long conduit equipped with a float is vertically extended into the interior of the container. After installation, a non-magnetic tool strip is used to push the magnet sleeve to the bottom of the long conduit so that the magnet is located below the induction iron ring, the traction rope connected to the magnet sleeve is stored in the short conduit and the long conduit, the handle is placed in the accommodating cavity and the valve cover is screwed on; when the fire-extinguishing medium is filled in the container, the float will float up, and the magnet sleeve will still remain at the bottom of the long conduit. At this time, the valve cover is loosened, the handle is raised to pull out the traction rope, so that the magnet sleeve rises along the long conduit. When the magnet sleeve rises to the position of the float, the magnet and the induction iron ring attract each other, and the traction rope will show obvious hysteresis. At this time, the position of the color mark relative to the inspection port surface is recorded, or a new color mark is drawn to calibrate the initial position, and then the traction rope is stored back in the short conduit and the long conduit, and the valve cover is screwed on; during the storage process of the fire-extinguishing medium When the time specified in the inspection cycle is reached, loosen the valve cover, pull out the handle to pull out the traction rope, and make the magnet sleeve rise along the long guide tube. When obvious hysteresis is found in the traction rope, observe the position of the initially calibrated color mark relative to the inspection port surface. If the color mark is lower than the inspection port surface and exceeds the allowed degree, it is necessary to replenish the fire extinguishing medium; it has the advantage of easy and convenient inspection operation; during storage or fire duty, the spring presses the valve core against the conical surface, and makes the first sealing ring also seal with the conical surface. At the same time, the second sealing ring completes the sealing contact between the valve core guide sleeve and the valve core, disconnects the air inlet interface from the air outlet, prevents the leakage of the fire extinguishing medium, and has a good sealing effect; in the event of a fire, high-pressure gas enters from the air inlet interface, pushes the valve core downward, and the one-way valve opens. High-pressure gas enters the fire extinguishing medium container from the through hole opened on the positioning nut at the air outlet, pressurizes the fire extinguishing medium in the container, and thus sprays the fire extinguishing medium from the spray pipe to extinguish the fire, with good reliability and sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the structure of the present invention.

[0015] Figure 2 It is a partial stereogram of the structure of the present invention. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-2A multifunctional one-way valve comprises a valve body 1, a cavity 105 is provided through the valve body 1, one end of the cavity 105 is an inspection end 106 and the other end is an air outlet end 104, an air inlet interface 101 connected with the cavity 105 is provided in the middle of the valve body 1, a valve seat portion 102 is provided in the cavity 105 at the air inlet interface 101 and the air outlet end 104, and a conical surface 103 is provided on one side of the valve seat portion 102 adjacent to the air outlet end 104;

[0018] The cavity 105 is slidably equipped with a valve core guide sleeve 4, and the valve core 3 is slidably sleeved outside the valve core guide sleeve 4. The outer periphery of the valve core 3 adjacent to the conical surface 103 is fixed with a first sealing ring 17 through a valve core nut 16. A short conduit 5 is installed in the valve core guide sleeve 4, and a positioning nut 15 is screwed and installed at the outlet end 104. A spring 2 is installed between the positioning nut 15 and the valve core nut 16. A conduit locking nut 14 is screwed on the positioning nut 15. One end of the short conduit 5 is connected with the conduit locking nut 14, and the other end of the short conduit 5 passes through the short conduit. The pipe joint 19 is fastened to the inspection end 106 through the short catheter joint 19; the outer end of the catheter locking nut 14 is connected to a long catheter 13 which is concentric with and connected to the short catheter 5, a float 6 is provided on the outer sliding sleeve of the long catheter 13, a magnet sleeve 10 is slidably installed in the long catheter 13, a magnet 11 is fixedly installed in the magnet sleeve 10, and an induction iron ring 7 is installed on the inner side of the bottom end of the float 6; the end of the magnet sleeve 10 is connected to a traction rope 12, a color mark 1201 is provided on the traction rope 12, and the traction rope 12 passes through the long catheter 13 and the short catheter 5.

[0019] Preferably, the cavity 105 is provided with a sealing section 107 between the inspection end 106 and the air inlet interface 101 .

[0020] Preferably, a flange portion 401 is provided on the outer wall of the valve core guide sleeve 4 , and a second sealing ring 18 is provided between the flange portion 401 and the valve core 3 .

[0021] Preferably, a baffle 8 is installed at the end of the long conduit 13 , and the baffle 8 is fastened to the long conduit 13 by bolts 9 to prevent the buoy 6 from being separated from the long conduit, thereby ensuring the normal operation of the buoy 6 .

[0022] Preferably, a plurality of through holes 1501 are evenly distributed on the positioning nut 15 to allow the compressed gas to smoothly enter the fire extinguishing medium storage container, where the compressed gas is usually nitrogen.

[0023] Preferably: in order to increase the safety of the multifunctional one-way valve and protect the traction rope 12, a valve cover 20 is screwed on the end of the inspection end 106; a accommodating cavity 1901 is provided on the short catheter connector 19, and a handle 21 is movably installed in the accommodating cavity 1901, and the handle 21 is connected to the traction rope 12. By setting the handle 21, it is convenient to pull out the traction rope 12, and the operability is good; the handle 21 is placed in the accommodating cavity 1901 to prevent the handle 21 from being exposed to the outside, and cooperates with the valve cover 20 to protect the handle 21 and the traction 12, and at the same time has the effect of preventing misoperation.

[0024] Preferably: for easy identification, a plurality of color codes 1201 are provided on the traction rope 12. Depending on the shape of the storage container of the fire extinguishing medium, the spacing of the color codes can be equidistant or variable. As an embodiment, the color code 1201 can also be newly set when the fire extinguishing medium capacity position is initially calibrated.

[0025] Preferably, in order to prevent leakage of the inspection end 106 , a third sealing ring 22 is installed between the short conduit connector 19 and the valve core guide sleeve 4 and the sealing section 107 .

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] In the description of the present invention, it is necessary to understand that the terms "up", "down", "left", "right", "top", "bottom", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A multifunctional one-way valve, characterized in that: The valve body (1) comprises a valve body (1), wherein a cavity (105) is provided through the valve body (1), one end of the cavity (105) is an inspection end (106) and the other end is an air outlet end (104), an air inlet interface (101) in communication with the cavity (105) is provided in the middle of the valve body (1), a valve seat portion (102) is provided in the cavity (105) between the air inlet interface (101) and the air outlet end (104), and a conical surface (103) is provided on one side of the valve seat portion (102) adjacent to the air outlet end (104); A valve core guide sleeve (4) is slidably mounted inside the cavity (105), a valve core (3) is slidably mounted outside the valve core guide sleeve (4), a first sealing ring (17) is fixed to the outer periphery of the valve core (3) adjacent to the conical surface (103) via a valve core nut (16), a short conduit (5) is mounted inside the valve core guide sleeve (4), a positioning nut (15) is screwed on the air outlet end (104), a spring (2) is mounted between the positioning nut (15) and the valve core nut (16), a conduit locking nut (14) is screwed on the positioning nut (15), one end of the short conduit (5) is cooperatively connected to the conduit locking nut (14), and the other end of the short conduit (5) passes through the short conduit. The short conduit (5) is connected to a joint (19) and is fastened to the inspection end (106) through the short conduit joint (19); the outer end of the conduit locking nut (14) is connected to a long conduit (13) which is concentric with and communicates with the short conduit (5); a buoy (6) is provided on the outer sliding sleeve of the long conduit (13); a magnet sleeve (10) is slidably installed in the long conduit (13); a magnet (11) is fixedly installed in the magnet sleeve (10); an induction iron ring (7) is installed on the inner side of the bottom end of the buoy (6); a traction rope (12) is connected to the end of the magnet sleeve (10); a color mark (1201) is provided on the traction rope (12); and the traction rope (12) passes through the long conduit (13) and the short conduit (5).

2. A multifunctional one-way valve according to claim 1, characterized in that: The cavity (105) is provided with a sealing section (107) between the inspection end (106) and the air inlet interface (101).

3. A multifunctional one-way valve according to claim 1, characterized in that: A flange portion (401) is provided on the outer wall of the valve core guide sleeve (4), and a second sealing ring (18) is provided between the flange portion (401) and the valve core (3).

4. A multifunctional one-way valve according to claim 1, characterized in that: A baffle (8) is installed at the end of the long conduit (13), and the baffle (8) is fastened to the long conduit (13) via a bolt (9).

5. A multifunctional one-way valve according to claim 1, characterized in that: The positioning nut (15) is evenly provided with a plurality of through holes (1501).

6. A multifunctional one-way valve according to claim 1, characterized in that: The inspection end (106) is screwed with a valve cover (20), the short conduit connector (19) is provided with a receiving cavity (1901), a handle (21) is movably provided in the receiving cavity (1901), and the handle (21) is connected to the traction rope (12).

7. A multifunctional one-way valve according to claim 1, characterized in that: The color mark (1201) is provided in plurality.

8. A multifunctional one-way valve according to claim 2, characterized in that: A third sealing ring (22) is installed between the short conduit joint (19) and the valve core guide sleeve (4) and the sealing section (107).

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