Overflow valve with overpressure protection function
By introducing overflow horizontal channels, vertical channels and tension adjustment mechanisms into the overflow valve, dynamic adjustment of fluid pressure is achieved, solving the problem of pipeline damage caused by overpressure in existing overflow valves and improving the adaptability and safety of the overflow valve.
Patent Information
- Application Number
- CN202510738182.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2025-09-05
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When used in pipelines, existing relief valves cannot adapt to changes in fluid pressure, resulting in a higher risk of pipeline bursting due to overpressure.
A relief valve with a horizontal overflow channel and a vertical overflow channel is designed. Combined with a tension adjustment mechanism and a second valve core, the elastic force of the push rod is adjusted through a threaded or snap-fit structure to achieve dynamic adjustment of the fluid pressure and ensure that the relief valve works stably under different fluid pressures.
It effectively protects pipelines from overpressure damage, reduces the risk of pipeline bursting by adjusting the pressure threshold of the relief valve, and improves the adaptability and safety of the relief valve.
Smart Images
Figure CN120593076A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of overflow valves, and in particular to an overflow valve with overpressure protection. Background Art
[0002] Safety valves, also known as overflow valves, are crucial safety features for pressure pipes and pressure vessels. To ensure proper operation and extend the life of the safety valve, it should be regularly inspected for leaks, obstructions, spring corrosion, and other abnormalities. The adjusting screw and the set screws should also be carefully inspected for looseness. If any problems are found, appropriate maintenance measures should be taken promptly. Safety valves should also be regularly disassembled for thorough cleaning, inspection, and re-grinding and adjustment before reuse. Safety valves installed outdoors should be properly protected to prevent rain, fog, dust, rust, and other contaminants from invading the valve and discharge pipe. When ambient temperatures fall below zero degrees Celsius, necessary antifreeze measures should be implemented to ensure the safety valve operates reliably.
[0003] At present, when the existing relief valve is assembled into a pipeline for use, due to the limitations of its own structure, its function is relatively simple. It can only provide pressure protection for the fluid inside the pipeline based on its own pressure limit threshold. However, since the fluid inside some pipelines is changing, once the pressure threshold of the relief valve is exceeded, it will directly lead to an overpressure burst accident in the pipeline. Summary of the Invention
[0004] An embodiment of the present invention provides a relief valve with overpressure protection. By adjusting the pressure resistance threshold in the relief valve, the relief valve can withstand different fluid pressures, thereby solving the problem that the existing relief valve is prone to overpressure damage.
[0005] In view of the above problems, the technical solution proposed by the present invention is: A relief valve with overpressure protection comprises a valve body, wherein a pair of overflow horizontal channels and overflow vertical channels are respectively provided inside the valve body, the pair of overflow horizontal channels are connected to each other through the overflow vertical channel, a second valve core is provided inside one of the overflow horizontal channels, one end of the second valve core is connected to a push rod, a tightness adjustment mechanism is provided on the outer wall of the valve body, one side of the tightness adjustment mechanism is connected to one end of the push rod, a valve core assembly is provided on one side of the top end of the valve body, and the bottom end of the valve core assembly extends to the interior of the overflow horizontal channel.
[0006] In order to better implement the technical solution of the present invention, the following technical measures are also adopted.
[0007] Furthermore, the tension adjustment mechanism is configured as a threaded structure, which includes a first shell, a lead screw, a first spring and a twist handle. The internal thread of the first shell is connected to the lead screw, one end of the lead screw is rotatably connected to the first spring, one end of the first spring is connected to one end of the push rod, and one end of the lead screw extends to the outside of the first shell and is connected to one side of the twist handle.
[0008] Furthermore, the tension adjustment mechanism is configured as a snap-fit structure, which includes a second shell, a second spring, a sliding rod, a limit block, a third spring, a pull ring and a bayonet. Grooves are provided on both sides of the interior of the second shell, and the interiors of the two grooves are respectively slidably connected to the limit blocks, one end of the limit block is connected to the third spring, and one end of the third spring is connected to the inner wall of the groove. The interior of the second shell is slidably connected to the sliding rod, and the outer wall of the sliding rod is provided with a bayonet that engages with the limit block, one end of the sliding rod is connected to one end of the second spring, one end of the second spring is connected to one end of the push rod, and one end of the sliding rod extends to the outside of the second shell and is connected to one side of the pull ring.
[0009] Furthermore, the limiting block includes a square plate and a semicircular block, and the semicircular block is installed at the bottom end of the square plate.
[0010] Furthermore, the valve core assembly includes a valve stem, a knob, a nut, an elastic telescopic rod and a first valve core. The nut is installed on the top of the valve body, one side of the nut is threadedly connected to the valve stem, the bottom end of the valve stem extends to the interior of the valve body and is connected to the elastic telescopic rod, and the first valve core is installed on the bottom end of the elastic telescopic rod.
[0011] Furthermore, knobs are respectively mounted on both sides of the outer wall of the valve stem.
[0012] Furthermore, a first outlet and a second outlet are respectively provided on both sides of the bottom end of the valve body, and the first outlet and the second outlet are respectively located on both sides of the second valve core.
[0013] Furthermore, a first sealing plug is threadedly connected to one side of the outer wall of the valve body, one end of the first sealing plug extends to the interior of the overflow horizontal channel, and a second sealing plug is threadedly connected to the top end of the valve body, one end of the second sealing plug extends to the interior of the overflow vertical channel.
[0014] Furthermore, an inlet is provided on one side of the outer wall of the valve body, and one end of the inlet is connected to one end of the overflow channel.
[0015] Compared with the prior art, the present invention has the following beneficial effects: By cooperating with the overflow horizontal channel, the overflow vertical channel, the second valve core, the push rod and the tension adjustment mechanism, the overflow valve can realize the function of adjusting the internal pressure threshold. Among them, by adopting the threaded structure or the snap-fit structure of the tension adjustment mechanism, different elastic forces are applied to the push rod, and by the connection of the second valve core, the second valve core maintains a stable force inside the overflow horizontal channel. At the same time, according to the pressure change of the fluid, the threaded structure or the snap-fit structure is adjusted to prompt the tension adjustment mechanism to apply different forces to the push rod until the overflow valve meets the required docking pipeline.
[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A three-dimensional diagram of a relief valve with overpressure protection disclosed in an embodiment of the present invention; Figure 2 A front view of a relief valve with overpressure protection disclosed in an embodiment of the present invention; Figure 3 A side view of a relief valve with overpressure protection disclosed in an embodiment of the present invention; Figure 4 A schematic diagram of a first embodiment of a relief valve with overpressure protection disclosed in an embodiment of the present invention; Figure 5 A schematic diagram of a second embodiment of a relief valve with overpressure protection disclosed in an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a limit block of a relief valve with overpressure protection disclosed in an embodiment of the present invention; Reference numerals: 100, valve body; 200, valve core assembly; 2001, valve stem; 2002, knob; 2003, nut; 2004, elastic telescopic rod; 2005, first valve core; 300, tension adjustment mechanism; 300101, first housing; 300102, lead screw; 300103, first spring; 300104, twist handle; 300201, second housing; 300202, second spring; 30020 3. Sliding rod; 300204. Limit block; 3002041. Square plate; 3002042. Semicircular block; 300205. Third spring; 300206. Pull ring; 300207. Bayonet; 400. Inlet; 500. First sealing plug; 600. Second sealing plug; 700. Push rod; 800. Second valve core; 101. Overflow horizontal channel; 102. Overflow vertical channel; 103. First outlet; 104. Second outlet. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0019] Refer to the attached Figures 1-6 As shown, a relief valve with overpressure protection includes a valve body 100, wherein a pair of overflow horizontal channels 101 and an overflow vertical channel 102 are respectively provided inside the valve body 100, and the pair of overflow horizontal channels 101 are connected to each other through the overflow vertical channel 102, a second valve core 800 is provided inside one of the overflow horizontal channels 101, and one end of the second valve core 800 is connected to a push rod 700, an outer wall of the valve body 100 is provided with a tension adjustment mechanism 300, one side of the tension adjustment mechanism 300 is connected to one end of the push rod 700, a valve core assembly 200 is provided on one side of the top of the valve body 100, and the valve core The bottom end of the component 200 extends to the interior of the overflow channel 101. By adopting the threaded structure or the snap-fit structure of the tension adjustment mechanism 300, different elastic forces are applied to the push rod 700, and the second valve core 800 is connected and used to maintain a stable force inside the overflow channel 101. At the same time, according to the pressure change of the fluid, the threaded structure or the snap-fit structure is adjusted to prompt the tension adjustment mechanism 300 to apply different forces to the push rod 700 until the overflow valve meets the required docking pipeline.
[0020] Example 1 Refer to the attached Figure 4 As shown, the tension adjustment mechanism 300 is configured as a threaded structure, which includes a first shell 300101, a lead screw 300102, a first spring 300103 and a twist handle 300104. The internal thread of the first shell 300101 is connected to the lead screw 300102, one end of the lead screw 300102 is rotatably connected to the first spring 300103, one end of the first spring 300103 is connected to one end of the push rod 700, one end of the lead screw 300102 extends to the outside of the first shell 300101 and is connected to one side of the twist handle 300104. By rotating the twist handle 300104, it drives the lead screw 300102 to rotate forward and reverse, and the lead screw 300102 is moved in the progressive position of the thread, so that the first spring 300103 can be squeezed and the first spring 300103 is prompted to apply different pressures to the push rod 700.
[0021] Example 2 Refer to the attached Figure 5As shown, the tension adjustment mechanism 300 is configured as a snap-fit structure, which includes a second shell 300201, a second spring 300202, a slide bar 300203, a limit block 300204, a third spring 300205, a pull ring 300206 and a bayonet 300207. Grooves are provided on both sides of the interior of the second shell 300201. The interiors of the two grooves are respectively slidably connected to the limit blocks 300204. One end of the limit block 300204 is connected to the third spring 300205. One end of the third spring 300205 is connected to the inner wall of the groove. The interior of the second shell 300201 is slidably connected to the slide bar 300203. The outer wall of the slide bar 300203 is provided with a bayonet 300207 that is mutually engaged with the limit block 300204. One end of the slide bar 300203 is connected to one end of the second spring 300202. Then, one end of the second spring 300202 is connected to one end of the push rod 700, and one end of the slide rod 300203 extends to the outside of the second shell 300201 and is connected to one side of the pull ring 300206. By twisting the pull ring 300206, the limit block 300204 is disengaged from the bayonet 300207, and then by pushing and pulling the slide rod 300203, one end of the slide rod 300203 applies pressure to the second spring 300202, thereby adjusting the elastic force of the second spring 300202 on the push rod 700. At the same time, after adjusting the specified pressure, the pull ring 300206 is twisted again, so that the limit block 300204 is again subjected to the elastic action of the third spring 300205, causing it to extend to the inside of the bayonet 300207, thereby completing the fixation and limiting the slide rod 300203 to the specified position.
[0022] As a preferred technical solution, the limit block 300204 includes a square plate 3002041 and a semicircular block 3002042. The semicircular block 3002042 is installed at the bottom end of the square plate 3002041. The connection with the square plate 3002041 can prevent the semicircular block 3002042 from being out of the groove.
[0023] As a preferred technical solution, the valve core assembly 200 includes a valve stem 2001, a knob 2002, a nut 2003, an elastic telescopic rod 2004 and a first valve core 2005. The nut 2003 is installed at the top of the valve body 100, and one side of the nut 2003 is threadedly connected to the valve stem 2001. The bottom end of the valve stem 2001 extends to the interior of the valve body 100 and is connected to the elastic telescopic rod 2004. The first valve core 2005 is installed at the bottom end of the elastic telescopic rod 2004. Through the elastic action of the elastic telescopic rod 2004 on the first valve core 2005, one end of the first valve core 2005 can fill and seal one side of the overflow channel 101, thereby limiting the flow direction of the fluid inside the valve body 100.
[0024] As a preferred technical solution, knobs 2002 are respectively mounted on both sides of the outer wall of the valve stem 2001. By mounting the knobs 2002, the rotation of the valve stem 2001 is made more convenient.
[0025] As a preferred technical solution, a first outlet 103 and a second outlet 104 are respectively provided on both sides of the bottom end of the valve body 100. The first outlet 103 and the second outlet 104 are respectively located on both sides of the second valve core 800. Through the setting of the first outlet 103 and the second outlet 104, the overflow valve can be conveniently connected to the external pipeline.
[0026] As a preferred technical solution, a first sealing plug 500 is threadedly connected to one side of the outer wall of the valve body 100, and one end of the first sealing plug 500 extends to the interior of the overflow horizontal channel 101. A second sealing plug 600 is threadedly connected to the top of the valve body 100, and one end of the second sealing plug 600 extends to the interior of the overflow vertical channel 102. By connecting the first sealing plug 500 and the second sealing plug 600, it is convenient to fill the overflow horizontal channel 101 and the overflow vertical channel 102, and it is also beneficial to clean the interior of the two groups of channels.
[0027] As a preferred technical solution, an inlet 400 is provided on one side of the outer wall of the valve body 100 , one end of the inlet 400 is connected to one end of the overflow channel 101 . The setting of the inlet 400 facilitates the connection between the overflow valve and the fluid supply equipment.
[0028] Specifically, first, check whether the structure of the relief valve is intact. After ensuring that the structure is intact, put it into use. By adopting the threaded structure or the snap-fit structure of the tension adjustment mechanism 300, different elastic forces are applied to the push rod 700, and the second valve core 800 is connected and used, so that the second valve core 800 maintains a stable force inside the overflow channel 101. At the same time, according to the pressure change of the fluid, the threaded structure or the snap-fit structure is adjusted to prompt the tension adjustment mechanism 300 to apply different forces to the push rod 700 until the relief valve meets the required docking pipeline. Among them, by rotating the twist handle 300104, it drives the screw 300102 to rotate forward and reverse, and the screw 300102 moves through the progressive position of the thread, so that the first spring 300103 can be squeezed, and the first spring 300103 can apply different pressures to the push rod 700. Secondly, by twisting the pull ring 300206, the limit block 300 204 is disengaged from the bayonet 300207, and then the sliding rod 300203 is pushed and pulled, so that one end of the sliding rod 300203 applies pressure to the second spring 300202, thereby adjusting the elastic force of the second spring 300202 on the push rod 700. At the same time, after adjusting the specified pressure, the pull ring 300206 is twisted again, so that the limit block 300204 is again elastically acted upon by the third spring 300205, so that it extends to the inside of the bayonet 300207, thereby completing the fixation. The slide rod 300203 is restricted to a specified position, and the elastic telescopic rod 2004 exerts an elastic effect on the first valve core 2005, so that one end of the first valve core 2005 can fill and seal one side of the overflow horizontal channel 101, thereby limiting the flow direction of the fluid inside the valve body 100. At the same time, the first sealing plug 500 and the second sealing plug 600 are connected and used, which facilitates the filling of the overflow horizontal channel 101 and the overflow vertical channel 102, and is also beneficial for cleaning the interior of the two sets of channels.
[0029] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.
Claims
1. A relief valve with overpressure protection, characterized in that: The invention comprises a valve body (100), wherein a pair of overflow horizontal channels (101) and an overflow vertical channel (102) are respectively provided inside the valve body (100), and the pair of overflow horizontal channels (101) are interconnected through the overflow vertical channel (102), a second valve core (800) is provided inside one of the overflow horizontal channels (101), and one end of the second valve core (800) is connected to a push rod (700), and an outer wall of the valve body (100) is provided with a tension adjustment mechanism (300), one side of the tension adjustment mechanism (300) is connected to one end of the push rod (700), and a valve core assembly (200) is provided on one side of the top end of the valve body (100), and the bottom end of the valve core assembly (200) extends to the inside of the overflow horizontal channel (101).
2. The relief valve with overpressure protection according to claim 1, characterized in that: The tension adjustment mechanism (300) is configured as a threaded structure, comprising a first housing (300101), a lead screw (300102), a first spring (300103) and a twist handle (300104), wherein the internal thread of the first housing (300101) is connected to the lead screw (300102), one end of the lead screw (300102) is rotatably connected to the first spring (300103), one end of the first spring (300103) is connected to one end of the push rod (700), and one end of the lead screw (300102) extends to the outside of the first housing (300101) and is connected to one side of the twist handle (300104).
3. The relief valve with overpressure protection according to claim 1, characterized in that: The tension adjustment mechanism (300) is configured as a snap-fit structure, comprising a second housing (300201), a second spring (300202), a slide bar (300203), a limit block (300204), a third spring (300205), a pull ring (300206) and a bayonet (300207). Grooves are provided on both sides of the interior of the second housing (300201), and the interiors of the two grooves are respectively slidably connected to the limit blocks (300204), one end of the limit block (300204) is connected to the third spring (300205), and one end of the third spring (300205) is connected to the third spring (300205). The second housing (300201) is connected to the inner wall of the groove, and the interior of the second housing (300201) is slidably connected to the slide rod (300203). The outer wall of the slide rod (300203) is provided with a bayonet (300207) that engages with the limit block (300204). One end of the slide rod (300203) is connected to one end of the second spring (300202), and one end of the second spring (300202) is connected to one end of the push rod (700). One end of the slide rod (300203) extends to the outside of the second housing (300201) and is connected to one side of the pull ring (300206).
4. The relief valve with overpressure protection according to claim 3, characterized in that: The limiting block (300204) comprises a square plate (3002041) and a semicircular block (3002042), and the semicircular block (3002042) is installed at the bottom end of the square plate (3002041).
5. The relief valve with overpressure protection according to claim 1, characterized in that: The valve core assembly (200) comprises a valve stem (2001), a knob (2002), a nut (2003), an elastic telescopic rod (2004) and a first valve core (2005); the nut (2003) is installed at the top end of the valve body (100); one side of the nut (2003) is threadedly connected to the valve stem (2001); the bottom end of the valve stem (2001) extends to the interior of the valve body (100) and is connected to the elastic telescopic rod (2004); the first valve core (2005) is installed at the bottom end of the elastic telescopic rod (2004).
6. The relief valve with overpressure protection according to claim 5, characterized in that: Knobs (2002) are respectively mounted on both sides of the outer wall of the valve stem (2001).
7. The relief valve with overpressure protection according to claim 1, characterized in that: A first outlet (103) and a second outlet (104) are respectively provided on both sides of the bottom end of the valve body (100), and the first outlet (103) and the second outlet (104) are respectively located on both sides of the second valve core (800).
8. The relief valve with overpressure protection according to claim 1, characterized in that: A first sealing plug (500) is threadedly connected to one side of the outer wall of the valve body (100), and one end of the first sealing plug (500) extends to the interior of the overflow horizontal channel (101). A second sealing plug (600) is threadedly connected to the top end of the valve body (100), and one end of the second sealing plug (600) extends to the interior of the overflow vertical channel (102).
9. The relief valve with overpressure protection according to claim 1, characterized in that: An inlet (400) is provided on one side of the outer wall of the valve body (100), and one end of the inlet (400) is communicated with one end of the overflow channel (101).