Pressure reducing valve with good sealing performance

Abstract

The utility model relates to the technical field of pressure reducing valves, in particular to a pressure reducing valve with good sealing performance, which comprises a valve body, two ends of the valve body are fixedly connected with first connecting flanges, the other ends of the first connecting flanges are provided with second connecting flanges, and the other ends of the second connecting flanges are communicated with pipelines. A mounting groove is formed in the inner side of the second connecting flange, and an internal thread is arranged on the inner wall of the mounting groove; the sealing assembly is arranged on the surface of the first connecting flange; by arranging the sealing assembly, after the connecting ring is installed, a sealing air bag can be bulged to fill a gap between the connecting ring and the installation groove, the sealing strength between the connecting ring and the installation groove is improved, and the situation that water leaks from the gap is reduced; and meanwhile, in the water conveying process, water can be guided into the adjusting area through the connecting hole to achieve the effect that the gap between the baffle ring and the second connecting flange is filled with the bulged sealing membrane, and the sealing performance is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure reducing valve technical field, especially a pressure reducing valve with good sealing. BACKGROUND

[0002] Pressure reducing valve is through adjusting, import pressure is reduced to certain needed export pressure, and relies on medium itself's energy, makes export pressure automatic keeping stable valve. From the point of view of fluid mechanics, pressure reducing valve is a local resistance can change throttle element, that is, through changing throttle area, makes flow velocity and fluid's kinetic energy change, causes different pressure loss, thereby reaches the purpose of reducing pressure, the import and export water end of current existing pressure reducing valve mainly adopts connecting flange and pipeline connection, and the connecting flanges are only single sealed with sealing ring, and the sealing effect is poor.

[0003] Therefore, a pressure reducing valve with good sealing is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a pressure reducing valve with good sealing, which improves the poor sealing effect.

[0005] The utility model discloses a pressure reducing valve with good sealing, which improves the poor sealing effect.

[0006] Valve body, both ends of the valve body are fixedly connected with first connecting flanges, another end of the first connecting flange is provided with second connecting flanges, another end of the second connecting flange is communicated with pipelines, the inner side of the second connecting flange is provided with mounting grooves, and the inner wall of the mounting groove is provided with internal threads.

[0007] Sealing assembly, the sealing assembly is arranged on the surface of the first connecting flange, and the sealing assembly is used for improving the connection sealing strength of the first connecting flange and the second connecting flange.

[0008] The sealing assembly includes a connecting ring fixedly connected to the surface of the first connecting flange, the surface of the connecting ring is provided with external threads, the connecting ring is matched with the mounting groove, and the surface of the connecting ring is embedded with a sealing air bag.

[0009] Preferably, the side, away from the first connecting flange, of the connecting ring is provided with a pressure ring, the inside of the connecting ring is provided with a gas storage cavity, the inner wall of the gas storage cavity is slidably connected with an extrusion ring, one side of the extrusion ring is fixedly connected with uniformly distributed connecting rods, the other end of the connecting rod penetrates out of the gas storage cavity and is fixedly connected with the surface of the pressure ring, and one side of the pressure ring is tightly attached to the inner wall of the mounting groove.

[0010] Preferably, the other side of the extrusion ring is filled with inert gas between the inside of the gas storage cavity, and the side of the extrusion ring is fixedly connected with the spring between the inner wall of the gas storage cavity.

[0011] Preferably, the surface of the sealing air bag is communicated with uniformly distributed conduits, and the other end of the conduit is communicated with the gas storage cavity.

[0012] Preferably, the surface of the extrusion ring is fixedly connected with a stop ring, the outer side of the stop ring is in contact with the inner wall of the second connecting flange, the outer side of the stop ring is fixedly connected with a sealing diaphragm, and the sealing diaphragm and the outer side of the stop ring form an adjusting area.

[0013] Preferably, the inner side of the stop ring is provided with a connecting hole which is uniformly distributed and communicated with the adjusting area.

[0014] The beneficial effects of the utility model are:

[0015] By setting the sealing assembly, the gap between the inflated sealing air bag and the installation groove can be filled after the connecting ring is installed, the sealing strength between the two is improved, the water leakage from the place is reduced, and the effect of the inflated sealing diaphragm filling the gap between the stop ring and the second connecting flange is realized by using water to guide into the adjusting area during water conveying, and the sealing property is further improved.

[0016] By setting the sealing assembly, the first connecting flange and the second connecting flange can be quickly installed and disassembled in a threaded connection mode. ACCURATE DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is a partial sectional view of the utility model;

[0019] Figure 3 It is a structural schematic view of the sealing assembly of the utility model;

[0020] Figure 4 It is Figure 3 It is an enlarged view of A.

[0021] In the figure: 1, valve body; 101, first connecting flange; 102, pipeline; 103, second connecting flange; 2, sealing assembly; 201, connecting ring; 202, sealing air bag; 203, conduit; 204, spring; 205, connecting rod; 206, extrusion ring; 207, gas storage cavity; 208, pressure receiving ring; 209, connecting hole; 211, sealing diaphragm; 212, stop ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present utility model.

[0023] In specific implementation, as shown in the figure, a pressure reducing valve with good sealing includes: Figures 1-4

[0024] A valve body 1, both ends of the valve body 1 are fixedly connected with a first connecting flange 101, the other end of the first connecting flange 101 is provided with a second connecting flange 103, the other end of the second connecting flange 103 is communicated with a pipeline 102, the inner side of the second connecting flange 103 is provided with a mounting groove, and the inner wall of the mounting groove is provided with an internal thread.

[0025] A sealing assembly 2, the sealing assembly 2 is arranged on the surface of the first connecting flange 101, and the sealing assembly 2 is used for improving the connection sealing strength of the first connecting flange 101 and the second connecting flange 103.

[0026] The sealing assembly 2 includes a connecting ring 201 fixedly connected to the surface of the first connecting flange 101, the surface of the connecting ring 201 is provided with an external thread, the connecting ring 201 is matched with the mounting groove, and the surface of the connecting ring 201 is embedded with a sealing air bag 202.

[0027] The arrangement of the internal thread and the external thread can enable the first connecting flange 101 and the second connecting flange 103 to be quickly connected through the cooperation of the connecting ring 201 and the mounting groove, the operation is simple, the efficiency of installation and disassembly is effectively improved, and the arrangement of the sealing air bag 202 can strengthen the sealing strength of the gap between the connecting ring 201 and the mounting groove, thereby improving the sealing performance.

[0028] As shown in the figure, the side, away from the first connecting flange 101, of the connecting ring 201 is provided with a pressure receiving ring 208, the inside of the connecting ring 201 is provided with a gas storage cavity 207, the inner wall of the gas storage cavity 207 is slidably connected with an extrusion ring 206, one side of the extrusion ring 206 is fixedly connected with uniformly distributed connecting rods 205, the other end of the connecting rods 205 penetrates out of the gas storage cavity 207 and is fixedly connected with the surface of the pressure receiving ring 208, and one side of the pressure receiving ring 208 is tightly attached to the inner wall of the mounting groove. Figures 1-4 The other side of the extrusion ring 206 and the inside of the gas storage cavity 207 are filled with inert gas, and a spring 204 is fixedly connected between one side of the extrusion ring 206 and the inner wall of the gas storage cavity 207.

[0029]

[0030] ​​The surface of the sealing air bag 202 is communicated with uniformly distributed pipes 203, and the other end of the pipe 203 is communicated with the gas storage cavity 207.

[0031] In the process of connecting the first connecting flange 101 and the second connecting flange 103, the connecting ring 201 is gradually inserted into the inside of the mounting groove, and in this process, the compression ring 208 can be extruded, so that the compression ring 208 drives the connecting rod 205 to gradually insert into the inside of the gas storage cavity 207, and in this process, the extrusion ring 206 can be driven to move synchronously, thereby extruding the inert gas stored in the gas storage cavity 207, so that part of the inert gas can be injected into the inside of the sealing air bag 202 through the pipe 203, in this process, the sealing air bag 202 can be inflated, so that the inflated sealing air bag 202 further fills the gap between the connecting ring 201 and the mounting groove, further improving the sealing effect, and reducing the possibility of water leakage from the connection between the valve body 1 and the pipeline 102.

[0032] As shown in Figures 1-4 The surface of the extrusion ring 206 is fixedly connected with a blocking ring 212, the outer side of the blocking ring 212 is in contact with the inner wall of the second connecting flange 103, the outer side of the blocking ring 212 is fixedly connected with a sealing diaphragm 211, and the sealing diaphragm 211 and the outer side of the blocking ring 212 form an adjusting area.

[0033] The inner side of the blocking ring 212 is provided with uniformly distributed connecting holes 209 which are communicated with the adjusting area.

[0034] The blocking ring 212 can preliminarily block the gap between the second connecting flange 103 and the connecting ring 201 after the first connecting flange 101 and the second connecting flange 103 are connected, reducing the possibility of water flowing into the inside of the mounting groove, and with the water supply of the pipeline 102, part of the water can be injected into the inside of the adjusting area through the connecting holes 209, so that the sealing diaphragm 211 is inflated to fill the gap between the blocking ring 212 and the second connecting flange 103, further improving the sealing effect.

[0035] The utility model discloses when using, the setting of internal thread and external thread can make first connecting flange 101 and second connecting flange 103 realize quick connection through the cooperation of connecting ring 201 and installation slot, and the operation is simple, after installing, along with the water delivery of pipeline 102, part water can be injected into the inside of adjusting area through connecting hole 209, make that sealing diaphragm 211 is puffed and fills the gap of second connecting flane 103 103, further improved the sealing effect, simultaneously in the process that first connecting flange 101 is connected with second connecting flange 103, connecting ring 201 gradually inserts the inside of installation slot, in this process can extrude pressure ring 208, make that pressure ring 208 drive connecting rod 205 gradually insert the inside of gas storage cavity 207, in this process can drive extrusion ring 206 synchronous movement, and then can extrude the inert gas stored in the inside of gas storage cavity 207, make this part inert gas can be injected into the inside of sealed air bag 202 through pipe 203, in this process can puff sealed air bag 202, make that puffed sealed air bag 202 further fills the gap of connecting ring 201 and installation slot, further improved the sealing effect, reduced the possibility of water from the valve body 1 and pipeline 102 connecting place leakage.

[0036] Furthermore, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A pressure reducing valve with a good seal, characterized by Include: Valve body (1), both ends of the valve body (1) are fixedly connected with first connecting flange (101), the other end of the first connecting flange (101) is provided with second connecting flange (103), the other end of the second connecting flange (103) is communicated with pipeline (102), the inner side of the second connecting flange (103) is provided with mounting groove, the inner wall of the mounting groove is provided with internal thread; Sealing assembly (2) is arranged on the surface of first connecting flange (101), and sealing assembly (2) is used to improve the connection sealing strength of first connecting flange (101) and second connecting flange (103); Wherein, the sealing assembly (2) includes a connecting ring (201) fixedly connected to the surface of the first connecting flange (101), the surface of the connecting ring (201) is provided with external thread, the connecting ring (201) is matched with the mounting groove, and the surface of the connecting ring (201) is embedded with sealing air bag (202).

2. A sealed pressure reducing valve according to claim 1, wherein: The side of the connecting ring (201) away from the first connecting flange (101) is provided with a pressure ring (208), the inside of the connecting ring (201) is provided with a gas storage cavity (207), the inside wall of the gas storage cavity (207) is slidably connected with an extrusion ring (206), one side of the extrusion ring (206) is fixedly connected with uniformly distributed connecting rods (205), the other end of the connecting rod (205) penetrates out of the gas storage cavity (207) and is fixedly connected with the surface of the pressure ring (208), and one side of the pressure ring (208) is in close contact with the inner wall of the mounting groove.

3. A sealed pressure reducing valve according to claim 2, wherein: The other side of the extrusion ring (206) and the inside of the gas storage cavity (207) are filled with inert gas, and one side of the extrusion ring (206) and the inner wall of the gas storage cavity (207) are fixedly connected with a spring (204).

4. A sealed pressure reducing valve according to claim 3, wherein: The surface of the sealing air bag (202) is communicated with uniformly distributed catheters (203), and the other end of the catheter (203) is communicated with the gas storage cavity (207).

5. A sealed pressure reducing valve according to claim 4, wherein: The surface of the extrusion ring (206) is fixedly connected with a stop ring (212), the outer side of the stop ring (212) is in contact with the inner wall of the second connecting flange (103), the outer side of the stop ring (212) is fixedly connected with a sealing diaphragm (211), and the sealing diaphragm (211) and the outer side of the stop ring (212) form an adjusting area.

6. A sealed pressure reducing valve according to claim 5, wherein: The inner side of the stop ring (212) is provided with uniformly distributed connecting holes (209) communicated with the adjusting area.

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