Gas pressure reducer for large flow

Abstract

The utility model provides a gas pressure reducer for large flow, which comprises a valve body, a main chamber, a valve clack chamber, a gas outlet and a plurality of U-shaped gas inlets are arranged in the valve body, the plurality of U-shaped gas inlets are arranged on the inner surface of the valve clack chamber in an annular array shape by taking the valve clack chamber as the center, and the valve clack chamber is arranged in the main chamber. The depth of the U-shaped air inlet is the same as that of the valve clack cavity; the U-shaped air inlet is communicated with the valve clack chamber and the main chamber, and the valve clack chamber is communicated with the air outlet; by means of the arrangement of the main cavity, the valve clack cavity, the air outlet and the U-shaped air inlets, when the I-shaped valve clack is opened, air can enter the valve clack cavity in a concentrated mode through the U-shaped air inlets, then the air in the valve clack cavity is output from the air outlet in a concentrated mode, and therefore the valve clack is convenient to use. Therefore, the occupation of the I-shaped valve clack on the gas outlet, the main chamber and the valve clack chamber can be reduced, and the gas can be conveyed in a large flow.

Description

Technical Field

[0001] The utility model relates to the field of pressure regulators, and particularly to a gas pressure regulator for large flow rates. Background Art

[0002] A gas pressure regulator for large flow rates is a pressure reducing device specifically designed to handle high-flow and high-pressure gases. It is widely used in households, public places, factories, and specific industrial fields such as petrochemical, heat treatment, and gas manifolds to solve problems caused by excessive air pressure.

[0003] However, in the existing gas pressure regulators, since the valve flap is arranged in the valve chamber of the pressure regulator, the space of the valve chamber is occupied by the valve flap, thus affecting the large-scale output of gas.

[0004] Therefore, it is very necessary to invent a gas pressure regulator for large flow rates. Content of the Utility Model

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model for a gas pressure regulator for large flow rates is as follows: A gas pressure regulator for large flow rates includes a valve body, wherein: A main chamber, a valve flap chamber, an air outlet, and a plurality of U-shaped air inlets are formed inside the valve body, and the plurality of U-shaped air inlets are arranged in an annular array on the inner surface of the valve flap chamber with the valve flap chamber as the center, and the depth of the U-shaped air inlet is the same as the depth of the valve flap chamber; The U-shaped air inlet is communicated with the valve flap chamber and the main chamber, and the valve flap chamber is communicated with the air outlet; The valve flap chamber and the air outlet are coaxial, and the inner diameter of the valve flap chamber is larger than the inner diameter of the air outlet;

[0006] Preferably, a valve flap assembly is detachably and fixedly installed in the valve body through a bottom cover, and the valve flap assembly is located in the valve flap chamber;

[0007] Preferably, a pressure regulating assembly for driving the opening and closing of the valve flap assembly is detachably and fixedly installed in the valve body through a connecting cover, and the pressure regulating assembly is detachably and fixedly connected to the valve flap assembly;

[0008] Preferably, the main chamber is communicated with the air inlet pipe of the valve body;

[0009] Preferably, the air outlet is communicated with the air outlet pipe of the valve body.

[0010] Preferably, the pressure regulating assembly includes an adjusting screw rod, a pressure regulating spring and a diaphragm. One end of the adjusting screw rod is fixedly installed with a rotary cover, and the other end of the adjusting screw rod is rotatably installed with a connecting piece; the connecting piece is fixedly connected with one end of the pressure regulating spring, and the other end of the pressure regulating spring is fixedly connected with the upper surface of the diaphragm. The bottom surface of the diaphragm is fixedly installed with a thimble; the adjusting screw rod is meshed and connected with the threaded hole on the connecting cover; the connecting piece and the pressure regulating spring are both located in the connecting cover; the diaphragm and the thimble are located in the valve body, and the bottom end of the thimble is detachably and fixedly connected with the valve flap assembly through the air outlet; the rotary cover rotates and slidably sleeves outside the connecting cover.

[0011] Preferably, the valve flap assembly includes a compression spring and an I-shaped valve flap. One end of the compression spring is fixedly connected with one side surface of the bottom cover, and the other end of the compression spring is fixedly connected with one end of the I-shaped valve flap; the compression spring and the I-shaped valve flap are coaxial with the bottom cover; the I-shaped valve flap is elastically and slidably installed in the valve flap chamber through the compression spring, and the other end of the I-shaped valve flap is detachably and fixedly connected with the bottom end of the thimble.

[0012] Preferably, a countersunk feedback chamber is opened on one side of the upper surface of the valve body, and an externally threaded connecting pipe orifice is fixedly installed at the opening of the feedback chamber on the upper surface of the valve body. The externally threaded connecting pipe orifice is detachably and fixedly connected with the connecting cover through threads; the feedback chamber is communicated with the externally threaded connecting pipe orifice and the air outlet, and the feedback chamber is coaxial with the externally threaded connecting pipe orifice and the air outlet; the diaphragm is detachably and sealingly fixedly installed in the feedback chamber; the thimble is located in the feedback chamber and the air outlet; the inner diameter of the feedback chamber is larger than the inner diameter of the air outlet.

[0013] Preferably, a countersunk hole is opened on one side of the lower surface of the valve body, and the countersunk hole is communicated with the main chamber and is coaxial with the main chamber; the bottom cover is detachably and fixedly installed in the countersunk hole.

[0014] Preferably, an L-shaped air passage composed of an air passage one and an air passage two is opened inside the valve body, and the air passage one and the air passage two are communicated; one end of the air passage one is communicated with the feedback chamber; one end of the air passage two is communicated with the air outlet pipe; the width of the air passage one is the same as the inner diameter of the air passage two; the inner diameter of the air passage two is the same as the inner diameters of the air outlet and the air outlet pipe.

[0015] Compared with the prior art, the advantages of the present utility model are as follows:

[0016] The present utility model can, through the settings of the main chamber, the valve flap chamber, the air outlet and the U-shaped air inlet, when the I-shaped valve flap is opened, the gas will enter the valve flap chamber concentratedly through each U-shaped air inlet, and then make the gas in the valve flap chamber output concentratedly from the air outlet. In this way, the occupation of the air outlet, the main chamber and the valve flap chamber by the I-shaped valve flap can be reduced, so that the gas can be transported in a large flow rate. Brief Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0018] Figure 2 is a schematic diagram of the full-section structure of the present utility model.

[0019] Figure 3 is a schematic diagram of the partial structure of the valve body of the present utility model.

[0020] In the figure:

[0021] Valve body 1, main chamber 2, valve flap chamber 3, air outlet 4, U-shaped air inlet 5, feedback chamber 6, airway one 7, airway two 8, externally threaded connecting pipe orifice 9, countersunk hole 10, connecting cover 11, threaded hole 12, adjusting screw rod 13, screw cap 14, connecting piece 15, pressure regulating spring 16, diaphragm 17, thimble 18, bottom cover 19, compression spring 20, I-shaped valve flap 21, intake pipe 22, outlet pipe 23. Detailed Description of the Preferred Embodiments

[0022] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a 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 of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the embodiments, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] The following further describes the present utility model in conjunction with the attached drawings:

[0025] Embodiment

[0026] Referring to Figures 1-3 , a gas pressure reducer for large flow rate includes a valve body 1, wherein: a main chamber 2, a valve flap chamber 3, an air outlet 4 and a plurality of U-shaped air inlets 5 are provided inside the valve body 1. The plurality of U-shaped air inlets 5 are arranged in an annular array on the inner surface of the valve flap chamber 3 with the valve flap chamber 3 as the center. The depth of the U-shaped air inlet 5 is the same as the depth of the valve flap chamber 3. Through the setting of the U-shaped air inlet 5, the space occupied by the I-shaped valve flap 21 in the valve flap chamber 3 can be compensated. When the air outlet 4 is opened, the U-shaped air inlet 5 will also be opened simultaneously. In this way, a large amount of gas inside the main chamber 2 will be respectively transported from each U-shaped air inlet 5 and the valve flap chamber 3 to the air outlet 4. At the same time, the setting between the U-shaped air inlet 5 and the valve flap chamber 3 will not affect the stability of the I-shaped valve flap 21 during operation and the sealing performance between the I-shaped valve flap 21 and the air outlet 4. The U-shaped air inlet 5 is communicated with the valve flap chamber 3 and the main chamber 2, and the valve flap chamber 3 is communicated with the air outlet 4. The valve flap chamber 3 and the air outlet 4 are coaxial, and the inner diameter of the valve flap chamber 3 is larger than the inner diameter of the air outlet 4, and the inner diameter of the valve flap chamber 3 is smaller than the inner diameter of the main chamber 2, so that the I-shaped valve flap 21 can block the air outlet 4;

[0027] A valve flap assembly is detachably and fixedly installed in the valve body 1 through a bottom cover 19, and the valve flap assembly is located in the valve flap chamber 3 to control the air intake volume of the valve flap chamber 3 and the U-shaped air inlet 5;

[0028] A pressure regulating assembly for driving the opening and closing of the valve flap assembly is detachably and fixedly installed in the valve body 1 through a connecting cover 11, and the pressure regulating assembly is detachably and fixedly connected to the valve flap assembly to drive the valve flap assembly to open or block the air outlet 4;

[0029] The main chamber 2 is communicated with the intake pipe 22 of the valve body 1 so that the required gas can enter the main chamber 2 through the intake pipe 22;

[0030] The air outlet 4 is communicated with the outlet pipe 23 of the valve body 1 so that the gas with the required pressure can be transported to the required equipment through the outlet pipe 23.

[0031] The pressure regulating assembly includes an adjusting screw rod 13, a pressure regulating spring 16 and a diaphragm 17. One end of the adjusting screw rod 13 is fixedly installed with a rotary cover 14, so that the adjusting screw rod 13 can be rotated through the rotary cover 14, and the adjusting screw rod 13 drives the connecting piece 15 to compress the pressure regulating spring 16, forcing the diaphragm 17 to deform, and enabling the thimble 18 to drive the I-shaped valve flap 21 to move in the valve flap chamber 3, thereby adjusting the size of the opening of the air outlet 4. The other end of the adjusting screw rod 13 is rotatably installed with a connecting piece 15; the connecting piece 15 is fixedly connected to one end of the pressure regulating spring 16, and the other end of the pressure regulating spring 16 is fixedly connected to the upper surface of the diaphragm 17. The bottom surface of the diaphragm 17 is fixedly installed with a thimble 18; the adjusting screw rod 13 is meshed and connected with the threaded hole 12 on the connecting cover 11; the connecting piece 15 and the pressure regulating spring 16 are both located in the connecting cover 11; the diaphragm 17 and the thimble 18 are located in the valve body 1, and the bottom end of the thimble 18 is detachably and fixedly connected to the valve flap assembly through the air outlet 4; the rotary cover 14 rotates and is slidably sleeved outside the connecting cover 11.

[0032] The valve flap assembly includes a compression spring 20 and an I-shaped valve flap 21. One end of the compression spring 20 is fixedly connected to one side surface of the bottom cover 19, and the other end of the compression spring 20 is fixedly connected to one end of the I-shaped valve flap 21; the compression spring 20 and the I-shaped valve flap 21 are coaxial with the bottom cover 19; the I-shaped valve flap 21 is elastically and slidably installed in the valve flap chamber 3 through the compression spring 20, and the other end of the I-shaped valve flap 21 is detachably and fixedly connected to the bottom end of the thimble 18, such as by threaded connection; the maximum diameter of the I-shaped valve flap 21 is greater than the inner diameter of the air outlet 4, and the maximum diameter of the I-shaped valve flap 21 is less than the inner diameter of the valve flap chamber 3; it should be noted that when the compression spring 20 is completely compressed, the top end of the I-shaped valve flap 21 still remains in the valve flap chamber 3 to prevent the I-shaped valve flap 21 from escaping the control of the pressure regulating assembly.

[0033] On one side of the upper surface of the valve body 1, a countersunk feedback chamber 6 is provided, and an externally threaded connecting pipe orifice 9 is fixedly installed at the opening of the feedback chamber 6 on the upper surface of the valve body 1. The externally threaded connecting pipe orifice 9 is detachably and fixedly connected to the connecting cover 11 through threads for later maintenance of the pressure regulating assembly; the feedback chamber 6 is communicated with the externally threaded connecting pipe orifice 9 and the air outlet 4, and the feedback chamber 6 is coaxial with the externally threaded connecting pipe orifice 9 and the air outlet 4; the diaphragm 17 is detachably and sealingly fixedly installed in the feedback chamber 6; the thimble 18 is located in the feedback chamber 6 and the air outlet 4; the inner diameter of the feedback chamber 6 is greater than the inner diameter of the air outlet 4.

[0034] On one side of the lower surface of the valve body 1, a countersunk hole 10 is provided, and the countersunk hole 10 is communicated with the main chamber 2. The countersunk hole 10 is coaxial with the main chamber 2; the bottom cover 19 is detachably and fixedly installed in the countersunk hole 10 for later maintenance of the valve flap assembly.

[0035] Inside the valve body 1, there is an L-shaped air passage composed of the first air passage 7 and the second air passage 8, and the first air passage 7 and the second air passage 8 are connected; one end of the first air passage 7 is connected to the feedback cavity 6; one end of the second air passage 8 is connected to the outlet pipe 23; the width of the first air passage 7 is the same as the inner diameter of the second air passage 8; the inner diameter of the second air passage 8 is the same as the inner diameters of the air outlet 4 and the outlet pipe 23; so that when the air outlet 4 is opened, the gas can quickly pass through the first air passage 7 and the second air passage 8 and enter the outlet pipe 23, reducing the obstruction to the gas.

[0036] In this embodiment, during use, it is connected to the gas supply device through the inlet pipe 22 and connected to the gas-using device through the outlet pipe 23;

[0037] When it is necessary to adjust the pressure and flow rate of the gas, only need to rotate the adjusting screw rod 13 by the rotary cover 14, so that the adjusting screw rod 13 drives the connecting piece 15 to compress the pressure regulating spring 16, forcing the diaphragm 17 to deform; the deformation of the diaphragm 17 will make the thimble 18 drive the I-shaped valve flap 21 to move down along the valve flap chamber 3, and then the opening size and outlet pressure of the air outlet 4 can be adjusted; when the air outlet 4 is opened, a large amount of gas inside the main chamber 2 will enter the air outlet 4 from each U-shaped air inlet 5 and the valve flap chamber 3 respectively, and finally be discharged through the outlet pipe 23.

[0038] Using the technical solution of the present invention, or those skilled in the art being inspired by the technical solution of the present invention to design a similar technical solution and achieving the above technical effects shall fall within the protection scope of the present invention.

Claims

1. A gas pressure reducer for large flow, characterized in that: The invention comprises a valve body (1), wherein: the valve body (1) is provided with a main chamber (2), a valve flap chamber (3), an air outlet (4) and a plurality of U-shaped air inlets (5); the plurality of U-shaped air inlets (5) are arranged in a circular array on the inner surface of the valve flap chamber (3) with the valve flap chamber (3) as the center; the U-shaped air inlet (5) is connected to the valve flap chamber (3) and the main chamber (2), and the valve flap chamber (3) is connected to the air outlet (4); A valve flap assembly is detachably fixedly mounted in the valve body (1) via a bottom cover (19), and the valve flap assembly is located in the valve flap chamber (3); A pressure regulating assembly for driving the valve flap assembly to open and close is detachably fixedly mounted in the valve body (1) via a connecting cover (11), and the pressure regulating assembly is detachably fixedly connected to the valve flap assembly; The main chamber (2) is in communication with an air inlet pipe (22) of the valve body (1); The air outlet (4) is in communication with the air outlet pipe (23) of the valve body (1).

2. A large flow gas pressure reducer as claimed in claim 1, characterized in that: The pressure regulating assembly comprises an adjusting screw (13), a pressure regulating spring (16) and a diaphragm (17), and one end of the adjusting screw (13) is fixedly mounted with a rotary cover (14), and the other end of the adjusting screw (13) is rotatably mounted with a connecting piece (15); the connecting piece (15) is fixedly connected to one end of the pressure regulating spring (16), and the other end of the pressure regulating spring (16) is fixedly connected to the upper surface of the diaphragm (17), and the bottom surface of the diaphragm (17) is fixedly mounted There is a push pin (18); the adjusting screw rod (13) is meshedly connected with the threaded hole (12) on the connecting cover (11); the connecting plate (15) and the pressure regulating spring (16) are both located in the connecting cover (11); the diaphragm (17) and the push pin (18) are located in the valve body (1), and the bottom end of the push pin (18) is detachably fixedly connected to the valve flap assembly through the air outlet (4); the rotary cover (14) is rotatably and slidably sleeved on the outside of the connecting cover (11).

3. A large flow gas pressure reducer as claimed in claim 2, characterized in that: The valve flap assembly comprises a compression spring (20) and an I-shaped valve flap (21), and one end of the compression spring (20) is fixedly connected to a side surface of the bottom cover (19), and the other end of the compression spring (20) is fixedly connected to one end of the I-shaped valve flap (21); the I-shaped valve flap (21) is elastically and slidably installed in the valve flap chamber (3) through the compression spring (20), and the other end of the I-shaped valve flap (21) is detachably fixedly connected to the bottom end of the ejector pin (18).

4. A large flow gas pressure reducer as claimed in claim 2, characterized in that: A countersunk feedback cavity (6) is provided on one side of the upper surface of the valve body (1), and an externally threaded connecting pipe port (9) is fixedly installed at the opening of the feedback cavity (6) on the upper surface of the valve body (1), and the externally threaded connecting pipe port (9) is detachably fixedly connected to the connecting cover (11) via a thread; the feedback cavity (6) is connected to the externally threaded connecting pipe port (9) and the air outlet (4); the diaphragm (17) is detachably sealed and fixedly installed in the feedback cavity (6); and the ejector pin (18) is located in the feedback cavity (6) and the air outlet (4).

5. A large flow gas pressure reducer as claimed in claim 4, characterized in that: A countersunk hole (10) is provided on one side of the lower surface of the valve body (1), and the countersunk hole (10) is communicated with the main chamber (2); the bottom cover (19) is detachably fixedly mounted in the countersunk hole (10).

6. A large flow gas pressure reducer as claimed in claim 5, characterized in that: An L-shaped air passage consisting of an air passage 1 (7) and an air passage 2 (8) is provided inside the valve body (1), and the air passage 1 (7) and the air passage 2 (8) are connected; one end of the air passage 1 (7) is connected to the feedback chamber (6); and one end of the air passage 2 (8) is connected to the air outlet pipe (23).

Images