Vibration suppression type pressure stabilizing valve and fuel gas distribution rod

Abstract

The vibration suppression type pressure stabilizing valve comprises a valve main body, a valve cover, a valve plug, a valve rod, a vibration suppression block, a bracket, a leather film, a spring seat, a spring and an adjusting screw, the valve main body comprises a gas inlet, a gas inlet cavity, a gas outlet cavity and a valve element seat, the vibration suppression block is arranged in the vibration suppression cavity, a gap is formed between the vibration suppression block and the vibration suppression cavity, and an end cover buckles the open end of the vibration suppression cavity; the bracket is attached to the leather membrane, the annular protrusion on the edge of the leather membrane is embedded into the annular groove, and the valve deck and the air inlet cavity are buckled to fix the leather membrane; the valve plug is matched with the valve element seat, and the connecting rod penetrates through the bracket, the leather film and the connecting hole to be matched with the clamping spring. One end of the spring extends into the spring seat cavity, the other end of the spring extends into the spring cavity, and the adjusting screw is screwed with the internal thread and supports the spring. And due to the arrangement of the vibration suppression cavity and the vibration suppression block of the valve rod, the vibration suppression block plays a role in reducing the vibration frequency of the valve plug, the valve rod, the diaphragm and the spring assembly and is not in coupling resonance with the variable frequency of the fuel gas, and the characteristic that the gas output of the fuel gas is stable is achieved.

Description

Technical Field

[0001] The utility model relates to a gas pressure-stabilizing valve for a gas combustion device. Background Art

[0002] The current prior art, Chinese Patent 202020251239.7, a gas pressure-stabilizing valve, includes a valve body (15) and a valve core (10), the valve core (10) is provided in the valve body (15), and also includes a pressure-regulating rod (14) and a pressure-stabilizing spring (6), one end of the pressure-regulating spring (6) is connected to the pressure-regulating rod (14), and the other end of the pressure-stabilizing spring (6) is connected to the valve core (10), and also includes a thickened membrane (9) and a pressure plate (8), the valve core (10) is provided with a thickened membrane (9), the thickened membrane (9) is provided with a pressure plate (8), the pressure plate (8) is provided with a pressure-stabilizing spring (6), and also includes a pressure-regulating cover (7), a pressure pad (5) and a gasket (4). The problem is that the change in gas pressure causes the valve core, the valve pressure spring, the thickened membrane (9) and the pressure plate (8) to resonate, and when the vibration frequencies of the two are basically the same and coupled, the gas output is unstable. Utility Model Content

[0003] The purpose of the utility model is to provide a vibration suppression type pressure stabilizing valve, which has the characteristics of overcoming the defects of the prior art.

[0004] The utility model is realized as follows: a vibration suppression type pressure stabilizing valve, characterized in that it includes a valve body, a valve cover, a valve plug, a valve stem, a vibration suppression block, a bracket, a membrane, a spring seat, a spring and an adjusting screw,

[0005] The valve body comprises an air inlet, an air inlet cavity, an air outlet cavity and a valve core seat, and an annular groove is provided at the opening end of the air inlet cavity;

[0006] The valve cover is provided with a spring cavity, and the spring cavity is provided with an internal thread;

[0007] The valve plug is in a spherical curved surface shape, the valve stem comprises a vibration suppression cavity with an opening at one end and a connecting rod, the valve stem and the valve plug are integrally formed, and the opening end of the vibration suppression cavity is located in the valve plug;

[0008] The spring seat comprises a spring seat cavity with a lower opening, and a connecting hole is provided on the top plate of the spring seat cavity;

[0009] The vibration suppression block is arranged in the vibration suppression cavity with a gap between it and the vibration suppression cavity, and the end cover buckles the open end of the vibration suppression cavity; the support seat and the membrane are fitted, the annular protrusion on the edge of the membrane is embedded in the annular groove, and the valve cover is buckled with the air inlet cavity to fix the membrane; the valve plug cooperates with the valve core seat, and the connecting rod passes through the support seat, the membrane and the connecting hole and cooperates with the retaining spring; one end of the spring extends into the spring seat cavity and the other end extends into the spring cavity, the adjusting screw is screwed into the internal thread, and the adjusting screw supports the spring.

[0010] The vibration suppression type pressure stabilizing valve is special in that: the vibration suppression block is made of iron, copper or stainless steel;

[0011] The valve stem and the valve plug are made of plastic material in one piece.

[0012] The vibration suppression type pressure stabilizing valve is special in that: the support seat is provided with a rod hole and a flange.

[0013] The valve stem is provided with a countersunk hole; the connecting rod passes through the flange and the rod hole, and the flange extends into the countersunk hole.

[0014] The vibration suppression type pressure stabilizing valve is special in that: a plug-in cavity is provided on the connecting hole of the spring seat cavity.

[0015] The membrane is provided with a plug connector, the plug connector is inserted into the plug cavity, and the connecting rod passes through a connecting hole on the plug connector.

[0016] The vibration suppression type pressure stabilizing valve is special in that: a cylindrical stop sleeve is arranged inside the valve cover, and the cylindrical stop sleeve is connected to the spring chamber;

[0017] The open end of the spring seat is provided with a stop plate; the stop plate cooperates with the cylindrical stop sleeve.

[0018] The vibration suppression type pressure stabilizing valve is special in that: a cylindrical spring seat is provided at the end of the adjusting screw, and the cylindrical spring seat is inserted into the spring.

[0019] A gas distribution rod is special in that it comprises an air intake assembly, the vibration suppression type pressure stabilizing valve and an air distribution assembly, wherein the air intake assembly is connected to an air intake cavity, and the air distribution assembly is connected to an air outlet cavity.

[0020] The gas distribution rod is special in that the air intake assembly includes an air intake body, a first electromagnetic assembly and a second electromagnetic assembly; the air intake body includes an air intake interface pipe, a first electromagnetic valve seat, an air guide pipe, a second electromagnetic valve seat and a gas delivery pipe; and the output pipe is connected to the air intake cavity.

[0021] The gas distribution rod is special in that the gas inlet body and the valve body are integrally formed.

[0022] The gas distribution rod is special in that: the gas distribution assembly includes a gas distribution pipe body, a nozzle and a gas distribution solenoid valve assembly.

[0023] The main body of the air distribution pipe includes an end cover, a main air pipe and an air distribution pipe, the air distribution pipe includes a straight-through air cavity, a sub-air cavity and an air distribution solenoid valve seat connected to the straight-through air cavity and the sub-air cavity, and the straight-through air cavity and the sub-air cavity are respectively provided with nozzle mounting holes;

[0024] The end cover is buckled with the air outlet cavity of the valve body.

[0025] The utility model discloses a vibration suppression type pressure stabilizing valve, a vibration suppression cavity of a valve stem and a vibration suppression block are arranged, the vibration suppression block plays the role of reducing the vibration frequency of the valve plug, the valve stem, the diaphragm and the spring assembly, and does not couple and resonate with the frequency of gas changes, thereby achieving the characteristic of stable gas output. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional view of the utility model.

[0027] Figure 2 yes Figure 1 A-A view of.

[0028] Figure 3 It is a three-dimensional cross-sectional view of the utility model.

[0029] Figure 4 It is a partial cross-sectional view of the utility model.

[0030] Figure 5 It is a stereogram of the utility model.

[0031] Figure 6 It is a partial three-dimensional exploded view of the utility model. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or an indirect connection 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.

[0034] Example 1

[0035] like Figure 1 As shown, a vibration suppression type pressure stabilizing valve is characterized in that it includes a valve body 1, a valve cover 2, a valve plug 31, a valve stem 32, a vibration block 4, a support seat 5, a membrane 6, a spring seat 7, a spring 8 and an adjusting screw 9.

[0036] The valve body 1 includes an air inlet, an air inlet cavity 1A, an air outlet cavity 1B and a valve core seat 1C. The air inlet is arranged in the radial direction of the air inlet cavity 1A; the valve core seat 1C is arranged at the junction of the air inlet cavity 1A and the air outlet cavity 1B, and an annular groove (not marked in the figure) is arranged at the opening end of the air inlet cavity 1A;

[0037] The valve cover 2 is provided with a spring cavity 21, and the spring cavity 21 is provided with an internal thread;

[0038] The valve plug 31 is in the shape of a spherical curved surface with an upper opening, and the valve stem 32 includes a vibration suppression chamber 321 with an opening at one end and a connecting rod 322. The valve stem 32 and the valve plug 31 are integrally formed, and the opening end of the vibration suppression chamber 321 is located in the valve plug 31;

[0039] The spring seat 7 comprises a spring seat cavity 71 with a lower opening, and a connecting hole 72 is provided on the top plate of the spring seat cavity 71;

[0040] The vibration block 4 is arranged in the vibration suppression cavity 321 and there is a gap between it and the vibration suppression cavity 321, and an end cover buckles the open end of the vibration suppression cavity 321; the support seat 5 and the membrane 6 are fitted, the annular protrusion 61 on the edge of the membrane 6 is embedded in the annular groove, and the valve cover 2 is buckled with the air inlet cavity 1A to fix the membrane 6; the valve plug 31 is located in the air outlet cavity, the valve plug 31 is matched with the valve core seat 1C, the connecting rod 322 passes through the support seat 5, the membrane 6 and the connecting hole 72 on the spring seat 7 and cooperates with the retaining spring 10, and the retaining spring 10 is fitted with the top plate of the spring cavity 71; one end of the spring 8 extends into the spring seat cavity 71, and the other end extends into the spring cavity 21, the adjusting screw 9 is screwed with the internal thread of the spring cavity 71, and the adjusting screw 9 supports the spring 8;

[0041] The vibration suppression block 4 has a counterweight effect, which increases the weight of the moving assembly composed of the valve plug, rod, bracket, diaphragm and spring seat. The pressure change of the gas entering the air inlet chamber 1A has a certain frequency; the pressure change uses the reciprocating movement of the moving assembly with a certain frequency. Compared with the prior art, the vibration suppression block 4 reciprocates in the vibration suppression chamber 321, which changes the frequency of the moving assembly [the moving frequency becomes smaller]; the frequency of the moving assembly and the frequency of the gas pressure change cannot resonate, thereby ensuring the stability of the gas output.

[0042] As a further improvement of the utility model: the vibration block 4 is made of iron, copper or stainless steel;

[0043] The valve stem 32 and the valve plug 31 are made of plastic material in one piece, or can be made of metal copper or aluminum.

[0044] As a further improvement of the present invention: the bracket 5 is provided with a rod hole 51 and a flange 52.

[0045] The valve stem 32 is provided with a countersunk hole 323 , which surrounds the connecting rod 322 ; the connecting rod 322 passes through the flange 52 and the rod hole 51 , and the flange 52 extends into the countersunk hole 323 .

[0046] As a further improvement of the present utility model: the connection hole 72 of the spring seat cavity 71 is provided with an insert cavity 721.

[0047] The membrane 6 is provided with a plug connector 62, which is inserted into the plug-in cavity 721, and the connecting rod 322 passes through the connecting hole on the plug connector 62. With such a structure, the bracket and the membrane are firmly connected.

[0048] As a further improvement of the utility model: the valve cover 2 is provided with a cylindrical stop sleeve 22, the cylindrical stop sleeve 22 is connected to the spring chamber 21, the inner diameter of the cylindrical stop sleeve 22 is the same as the inner diameter of the spring chamber 21, and the axes coincide with each other;

[0049] The open end of the spring seat 7 is provided with a stop plate 73 ; the stop plate 73 cooperates with the cylindrical stop sleeve 22 .

[0050] As a further improvement of the present utility model: a cylindrical spring seat 91 is provided at the end of the adjusting screw 9 , and the cylindrical spring seat 91 is inserted into the spring 8 .

[0051] Example 2

[0052] like Figure 3 , Figure 5 As shown, a gas gas distribution rod includes an air intake component 11, the vibration suppression type pressure-stabilizing valve as described above, and an air distribution component 12. The air intake component 11 is connected to the air inlet of the air intake cavity 1A, and the air distribution component 12 is connected to the air outlet cavity 1B.

[0053] The air intake assembly 11 includes an air intake body 111, a first electromagnetic assembly 112, and a second electromagnetic assembly 113. The air intake body 111 includes an air intake interface pipe 1111, a first electromagnetic valve seat 1112, an air guide pipe 1113, a second electromagnetic valve seat 1114, and an air delivery pipe 1115. The output pipe 1115 is connected to the air inlet of the air intake chamber 1A. The air intake interface pipe 1111, the first electromagnetic valve seat 1112, the air guide pipe 1113, the second electromagnetic valve seat 1114, and the air delivery pipe 1115 are connected in sequence. The first electromagnetic assembly 112 and the second electromagnetic assembly 113 are respectively arranged on the first electromagnetic valve seat 1112 and the second electromagnetic valve seat 1114. Double control is achieved to improve safety performance.

[0054] The air intake body 1111 and the valve body 1 are integrally formed by die-casting aluminum.

[0055] As a further improvement of the present invention: the gas distribution assembly 12 includes a gas distribution pipe body 121, a nozzle 122 and a gas distribution solenoid valve assembly 123,

[0056] The gas distribution pipe body 121 includes an end cover 1211, a main gas pipe 1212 and a gas distribution pipe 1213. The gas distribution pipe 1213 includes a straight-through gas cavity 12131, a sub-gas cavity 12132 and a gas distribution solenoid valve seat 12133 connected to the straight-through gas cavity and the sub-gas cavity. The straight-through gas cavity and the sub-gas cavity are respectively provided with nozzle mounting holes.

[0057] The end cover 1211 is buckled with the air outlet cavity 1B of the valve body 1 .

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. A vibration suppression type pressure stabilizing valve, characterized in that: It includes valve body, valve cover, valve plug, valve stem, vibration damping block, bracket, diaphragm, spring seat, spring and adjusting screw. The valve body comprises an air inlet, an air inlet cavity, an air outlet cavity and a valve core seat, and an annular groove is provided at the opening end of the air inlet cavity; The valve cover is provided with a spring cavity, and the spring cavity is provided with an internal thread; The valve plug is in a spherical curved surface shape, the valve stem comprises a vibration suppression cavity with an opening at one end and a connecting rod, the valve stem and the valve plug are integrally formed, and the opening end of the vibration suppression cavity is located in the valve plug; The spring seat comprises a spring seat cavity with a lower opening, and a connecting hole is arranged on the top plate of the spring seat cavity; The vibration suppression block is arranged in the vibration suppression cavity with a gap between it and the vibration suppression cavity, and the end cover buckles the open end of the vibration suppression cavity; the support seat and the membrane are fitted, the annular protrusion on the edge of the membrane is embedded in the annular groove, and the valve cover is buckled with the air inlet cavity to fix the membrane; the valve plug cooperates with the valve core seat, and the connecting rod passes through the support seat, the membrane and the connecting hole and cooperates with the retaining spring; one end of the spring extends into the spring seat cavity and the other end extends into the spring cavity, the adjusting screw is screwed into the internal thread, and the adjusting screw supports the spring.

2. A vibration suppression type pressure stabilizing valve according to claim 1, characterized in that: The vibration suppression block is made of iron, copper or stainless steel; The valve stem and the valve plug are made of plastic material in one piece.

3. The vibration suppression type pressure stabilizing valve according to claim 1, characterized in that: The bracket is provided with a rod hole and a flange. The valve stem is provided with a countersunk hole; the connecting rod passes through the flange and the rod hole, and the flange extends into the countersunk hole.

4. The vibration suppression type pressure stabilizing valve according to claim 1, characterized in that: The connecting hole of the spring seat cavity is provided with an inserting cavity. The membrane is provided with a plug connector, the plug connector is inserted into the plug cavity, and the connecting rod passes through a connecting hole on the plug connector.

5. The vibration suppression type pressure stabilizing valve according to claim 1, characterized in that: A cylindrical stop sleeve is arranged inside the valve cover, and the cylindrical stop sleeve is communicated with the spring chamber; The open end of the spring seat is provided with a stop plate; the stop plate cooperates with the cylindrical stop sleeve.

6. The vibration suppression type pressure stabilizing valve according to claim 1, characterized in that: The end of the adjusting screw is provided with a cylindrical spring seat, and the cylindrical spring seat is inserted into the spring.

7. A gas distribution rod, characterized in that: It comprises an air intake component, a vibration suppression type pressure stabilizing valve as described in any one of claims 1 to 6, and an air distribution component, wherein the air intake component is connected to an air intake cavity, and the air distribution component is connected to an air outlet cavity.

8. The gas distribution rod according to claim 7, characterized in that: The air intake assembly includes an air intake body, a first electromagnetic assembly and a second electromagnetic assembly. The air intake body includes an air intake interface pipe, a first electromagnetic valve seat, an air guide pipe, a second electromagnetic valve seat and an air delivery pipe. The output pipe is connected to the air intake cavity.

9. The gas distribution rod according to claim 8, characterized in that: The air intake body and the valve body are integrally formed.

10. The gas distribution rod according to claim 7, 8 or 9, characterized in that: The gas distribution assembly includes a gas distribution pipe body, a nozzle and a gas distribution solenoid valve assembly. The main body of the air distribution pipe includes an end cover, a main air pipe and an air distribution pipe, the air distribution pipe includes a straight-through air cavity, a sub-air cavity and an air distribution solenoid valve seat connected to the straight-through air cavity and the sub-air cavity, and the straight-through air cavity and the sub-air cavity are respectively provided with nozzle mounting holes; The end cover is buckled with the air outlet cavity of the valve body.

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