Heat-insulation impact-resistant branch pressure reducing valve
By setting up a combination of buffer pipe and baffle at the inlet end of the pressure reducing valve, using structures such as branch pipe and sealing ring to slow down the impact of fluid pressure, the problem of easy damage of existing pressure reducing valves under high water pressure is solved, and the impact resistance and long life effect is achieved.
Patent Information
- Application Number
- CN202421352447.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-14
AI Technical Summary
When existing pressure reducing valves face high water pressure, they are prone to damage due to impact, resulting in reduced adjustment accuracy and shortened service life.
A heat-insulating and impact-resistant branch pressure reducing valve is designed. By setting a combination of buffer pipe, annular baffle and fixed baffle at the inlet end, the branch pipe and sealing ring are used to slow down the impact of fluid pressure and reduce wear on the valve body parts.
It effectively reduces the impact damage of high-pressure fluid on pressure reducing valve body parts, improves service life, and reduces heat loss and thermal radiation through thermal insulation fillers and hierarchy.
Smart Images
Figure CN222669055U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a pressure reducing valve, in particular to a branch pressure reducing valve which is heat-insulated and impact-resistant. Background Art
[0002] A pressure reducing valve is a device used to control the pressure of a fluid (such as gas or liquid) by changing the flow path of the fluid to reduce the pressure. The basic components of a pressure reducing valve include a valve body, a valve core, a spring, and an adjustment mechanism. The valve body usually contains a channel for the fluid to enter and exit, and the valve core can move up and down under the action of the spring to adjust the flow area of the fluid. The adjustment mechanism is used to manually or automatically adjust the degree of opening of the valve to control the pressure of the fluid.
[0003] However, if the water pressure at the water inlet port of the pressure reducing valve is too high, the strong water pressure will impact the internal parts of the pressure reducing valve, which can easily cause wear and damage to the internal parts of the pressure reducing valve, resulting in reduced adjustment accuracy of the pressure reducing valve. The internal precision of the pressure reducing valve is high, the structure is complex, and maintenance is inconvenient, which shortens its service life. Utility Model Content
[0004] The utility model aims to provide a branch pressure reducing valve which is heat-insulated and impact-resistant. The utility model has the characteristics of high-pressure impact resistance and long service life.
[0005] The technical solution of the utility model is as follows: a heat-insulating and impact-resistant branch pressure-reducing valve, comprising a pressure-reducing valve body, wherein an inlet channel and an outlet channel are arranged in the pressure-reducing valve body, a buffer tube is arranged at the inlet end of the inlet channel, an annular baffle and a fixed baffle are arranged at the inlet end of the buffer tube, a movable valve flap which cooperates with the annular baffle to move and open and close the inlet channel is arranged between the annular baffle and the fixed baffle; a plurality of branch pipes are passed through the fixed baffle, the inlet end of the branch pipe is open, the outlet end of the branch pipe is closed, and a plurality of through holes are arranged on the side wall of the branch pipe.
[0006] In the aforementioned heat-insulating and impact-resistant branch pressure reducing valve, the annular baffle is provided with a blocking edge on the side facing the fixed baffle, the movable valve disc is provided with a sealing ring that cooperates with the blocking edge to close, the movable valve disc is provided with a moving rod that passes through the fixed baffle, and the moving rod is sleeved with a suppression spring, one end of the suppression spring is connected to the movable valve disc, and the other end of the suppression spring is connected to the fixed baffle.
[0007] In the aforementioned heat-insulating and impact-resistant branch pressure reducing valve, the sealing surface of the shielding edge is an inclined cross-section that bends inwardly, and the sealing surface of the sealing ring is an inclined cross-section that bends outwardly in coordination with the shielding edge.
[0008] In the aforementioned heat-insulating and impact-resistant branch pressure reducing valve, the buffer tube includes a threaded section and a smooth section, the diameter of the smooth section is smaller than the diameter of the threaded section, the buffer tube extends the smooth section into the pressure reducing valve body, and is connected to the pressure reducing valve body through the threaded section.
[0009] In the aforementioned heat-insulating and impact-resistant branch pressure reducing valve, the outer sleeve of the threaded section is provided with two heat-insulating rings, a sealing ring is provided between the two heat-insulating rings, and a sealing gasket is provided on the connecting surface between the smooth section and the pressure reducing valve body.
[0010] In the aforementioned heat-insulating and impact-resistant branch pressure reducing valve, a cavity is opened in the inner wall of the buffer tube, and a heat-insulating layer is provided on the outer wall of the buffer tube.
[0011] In the aforementioned heat-insulating and impact-resistant branch pressure-reducing valve, the inner wall of the pressure-reducing valve body is filled with heat-insulating filler.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] The utility model provides a buffer tube, and utilizes the cooperation of the annular baffle plate and the fixed baffle plate in the buffer tube to first relieve a part of the fluid pressure, and then utilizes the provided branch pipe to further relieve the pressure, so that the fluid after decompression passes through the pressure reducing valve body, thereby reducing the impact damage of the high pressure of the fluid on the pressure reducing valve body and improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model.
[0015] Figure 2 It is a schematic diagram of the internal structure of the buffer tube.
[0016] Figure 3 It is a schematic diagram of the external structure of the buffer tube.
[0017] The markings in the accompanying drawings are: 1. pressure reducing valve body; 11. inlet channel; 12. outlet channel; 13. thermal insulation filler; 2. buffer tube; 21. annular baffle; 22. fixed baffle; 23. shielding edge; 24. movable valve disc; 241. sealing ring; 25. moving rod; 26. pressing spring; 3. branch pipe; 31. through hole; 41. threaded section; 42. smooth section; 43. thermal insulation ring; 44. sealing ring; 45. sealing gasket; 46. cavity; 47. thermal insulation layer. DETAILED DESCRIPTION
[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.
[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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.
[0020] Example:
[0021] like Figure 1-Figure 3 As shown, a heat-insulating and impact-resistant branch pressure-reducing valve comprises a pressure-reducing valve body 1, wherein an inlet channel 11 and an outlet channel 12 are arranged in the pressure-reducing valve body 1, a buffer tube 2 is arranged at the inlet end of the inlet channel 11, an annular baffle 21 and a fixed baffle 22 are arranged at the inlet end of the buffer tube 2, a movable valve flap 24 which cooperates with the annular baffle 21 to move and open and close the inlet channel 11 is arranged between the annular baffle 21 and the fixed baffle 22; a plurality of branch pipes 3 are penetrated on the fixed baffle 22, the inlet end of the branch pipe 3 is open, the outlet end of the branch pipe 3 is closed, and a plurality of through holes 31 are arranged on the side wall of the branch pipe 3.
[0022] When a fluid with a relatively high pressure enters the buffer tube 2 from the inlet channel 11 of the pressure reducing valve body 1, a part of the pressure is first consumed to push the movable valve flap 24, so that the movable valve flap 24 is separated from the annular baffle 21. The fluid can enter the buffer tube 2 from the gap between the movable valve flap 24 and the annular baffle 21, and then be blocked by the fixed baffle 22, so that the fluid enters the branch pipe 3. The inlet end cross-section of the branch pipe 3 is relatively small. When the fluid passes through the small cross-section, the pressure of the liquid will be reduced. When it is discharged through the through hole 31 with an even smaller cross-section on the branch pipe 3, the pressure of the fluid will be further reduced, thereby reducing the impact damage to the components in the pressure reducing valve body 1 caused by excessive pressure.
[0023] The annular baffle 21 is provided with a blocking edge 23 on the side facing the fixed baffle 22, and a sealing ring 241 is provided on the movable valve flap 24 to seal with the blocking edge 23. The movable valve flap 24 is provided with a moving rod 25 passing through the fixed baffle 22, and a pressing spring 26 is sleeved on the moving rod 25. One end of the pressing spring 26 is connected to the movable valve flap 24, and the other end of the pressing spring 26 is connected to the fixed baffle 22. Under the elastic force of the pressing spring 26, the sealing ring 241 on the movable valve flap 24 is tightly attached to the blocking edge 23 on the fixed baffle 22, and the movable valve flap 24 closes the inlet channel 11; when the pressure of the fluid is relatively large, the elastic force of the pressing spring 26 is first overcome to separate the sealing ring 241 from the blocking edge 23, and then the water with reduced pressure passes through the pressure reducing valve body 1 again, thereby reducing the wear and damage to the components in the pressure reducing valve body 1.
[0024] The sealing surface of the shielding edge 23 is an inclined cross section that bends inwards, and the sealing surface of the sealing ring 241 is an inclined cross section that bends outwards in coordination with the shielding edge 23. By designing the cross-sectional shapes of the shielding edge 23 and the sealing ring 241, the shielding edge 23 and the sealing ring 241 have good sealing properties.
[0025] The buffer tube 2 includes a threaded section 41 and a smooth section 42. The diameter of the smooth section 42 is smaller than the diameter of the threaded section 41. The buffer tube 2 extends the smooth section 42 into the pressure reducing valve body 1 and is connected to the pressure reducing valve body 1 through the threaded section 41. The threaded connection between the buffer tube 2 and the pressure reducing valve body 1 facilitates replacement and maintenance of the buffer tube 2. The diameter of the smooth section 42 is smaller than the diameter of the threaded section 41, so that after the fluid discharged from the threaded section 41 passes through the smooth section 42, the flow area of the fluid becomes smaller, the velocity increases, and the pressure decreases.
[0026] The threaded section 41 is provided with two heat insulating rings 43 on its outer sleeve, a sealing ring 44 is provided between the two heat insulating rings 43, and a sealing gasket 45 is provided on the connection surface between the smooth section 42 and the pressure reducing valve body 1. The fluid flowing through the buffer tube 2 and the pressure reducing valve body 1 is protected by the two heat insulating rings 43, the sealing ring 44 and the sealing gasket 45, thereby improving the sealing performance of the pressure reducing valve and preventing the heat of the fluid from leaking from the connection gap.
[0027] A cavity 46 is formed in the inner wall of the buffer tube 2 , and a heat insulation layer 47 is formed on the outer wall of the buffer tube 2 .
[0028] The inner wall of the pressure reducing valve body 1 is filled with a heat insulating filler 13 .
[0029] The provided cavity 46, the heat insulating layer 47 and the heat insulating filler 13 effectively reduce the heat loss and heat energy waste of the fluid, improve the transfer efficiency of the fluid heat energy, and at the same time reduce the surface temperature of the valve body and reduce the heat radiation to the surrounding environment.
[0030] The parts not described in detail in the present invention are prior art and thus will not be described in detail here.
Claims
1. A heat-insulating and impact-resistant branch pressure reducing valve, comprising a pressure reducing valve body (1), wherein the pressure reducing valve body (1) is provided with an inlet channel (11) and an outlet channel (12), characterized in that: The inlet end of the inlet channel (11) is provided with a buffer tube (2), the inlet end of the buffer tube (2) is provided with an annular baffle (21) and a fixed baffle (22), a movable valve flap (24) is provided between the annular baffle (21) and the fixed baffle (22) and moves in coordination with the annular baffle (21) to open and close the inlet channel (11); a plurality of branch tubes (3) are passed through the fixed baffle (22), the inlet end of the branch tube (3) is open, the outlet end of the branch tube (3) is closed, and a plurality of through holes (31) are provided on the side wall of the branch tube (3).
2. A heat-insulating and impact-resistant branch pressure reducing valve according to claim 1, characterized in that: The annular baffle (21) is provided with a blocking edge (23) on the side facing the fixed baffle (22); the movable valve flap (24) is provided with a sealing ring (241) that cooperates with the blocking edge (23) for sealing; the movable valve flap (24) is provided with a moving rod (25) that passes through the fixed baffle (22); the moving rod (25) is sleeved with a pressing spring (26); one end of the pressing spring (26) is connected to the movable valve flap (24), and the other end of the pressing spring (26) is connected to the fixed baffle (22).
3. A heat-insulating and impact-resistant branch pressure reducing valve according to claim 2, characterized in that: The sealing surface of the shielding edge (23) is an inclined cross section that bends inwardly, and the sealing surface of the sealing ring (241) is an inclined cross section that bends outwardly in coordination with the shielding edge (23).
4. A heat-insulating and impact-resistant branch pressure reducing valve according to claim 1, characterized in that: The buffer tube (2) comprises a threaded section (41) and a smooth section (42); the diameter of the smooth section (42) is smaller than the diameter of the threaded section (41); the buffer tube (2) extends the smooth section (42) into the pressure reducing valve body (1) and is connected to the pressure reducing valve body (1) via the threaded section (41).
5. A heat-insulating and impact-resistant branch pressure reducing valve according to claim 4, characterized in that: The threaded section (41) is externally sleeved with two heat insulating rings (43), a sealing ring (44) is provided between the two heat insulating rings (43), and a sealing gasket (45) is provided on the connection surface between the smooth section (42) and the pressure reducing valve body (1).
6. The heat-insulated and impact-resistant branch pressure reducing valve according to claim 1, characterized in that: A cavity (46) is provided in the inner wall of the buffer tube (2), and a heat insulation layer (47) is provided on the outer wall of the buffer tube (2).
7. The heat-insulated and impact-resistant branch pressure reducing valve according to claim 1, characterized in that: The inner wall of the pressure reducing valve body (1) is filled with a heat insulating filler (13).