Control valve for adjusting flow

Abstract

The invention discloses a control valve for adjusting flow. Comprising a first valve body, a second valve body and a third valve body, the second valve body comprises a first air inlet cavity and a second air inlet cavity arranged in the first air inlet cavity, the second air inlet cavity is provided with a small-flow screw and an adjusting inlet which are kept unblocked, and the second valve body is provided with a second electromagnetic valve to remotely control the opening degree of the adjusting inlet. And a third electromagnetic valve is arranged on the third valve body so as to remotely control the on-off of the gas outlet interface. The device is simple in structure and relatively low in cost; and non-breakpoint gas flow switching can be achieved through joint cooperation of the second gas inlet cavity, the small-flow screw and the electromagnetic valve, remote control can be achieved conveniently, and the selectivity is multiple.

Description

Technical Field

[0001] The present invention relates to a gas control valve, and more particularly to a control valve capable of adjusting flow rates by remote control. Background Art

[0002] At present, the regulation of gas in the combustion system is generally achieved by using a control valve. Installing a solenoid valve on the control valve can only be used to control the opening or closing of the valve channel, and cannot achieve flow regulation. In addition, in order to achieve the regulation of gas flow, manual adjustment is used on the market, that is, flow holes corresponding to different apertures are set on the valve core at one time, and the flow holes are switched by manually rotating the valve core to achieve the switching of flow size, thus achieving the change between high fire and low fire. The switchable flow size is determined by the number of flow holes provided by the valve core. The selectivity is limited and there is a brief stop in gas supply when switching the flow holes.

[0003] Patent CN2690801Y, filed by the applicant, proposes a gas control valve that controls the gas intake volume by adjusting the gas inlet opening on a sealing sleeve via a stepper motor. However, the entire control valve is complex, requiring components such as a sealing sleeve, a stepper motor, a transmission gear, a transmission bracket, and a transmission rod, resulting in high overall costs. Summary of the Invention

[0004] The present application proposes a control valve for adjusting flow rates, the purpose of which is to provide a control valve with a simple structure to achieve the purpose of remotely adjusting the intake flow rate.

[0005] In order to achieve the above technical objectives, this application adopts the following technical solutions:

[0006] A control valve for adjusting flow rates, comprising: a first valve body, comprising a hollow inner cavity, a gas inlet interface and an ODS interface provided on one side of the first valve body, and an air outlet channel provided on the other side of the first valve body; the hollow inner cavity is divided into a lower storage inner cavity and an upper air outlet inner cavity that are in communication with each other; wherein the gas inlet interface corresponds to the storage inner cavity, and the ODS interface corresponds to the air outlet inner cavity; a valve seat, which is provided at the bottom of the first valve body; a first solenoid valve and a first sealing gasket provided on the top of the first solenoid valve are provided on the valve seat; the first solenoid valve controls the first sealing gasket to seal or unseal the outlet of the storage inner cavity; a valve core, which passes through the valve The rod, compression spring and sealing member are sealed in the air inlet cavity and restricted by a valve cover; the side wall of the valve core is sealed with the inner wall of the air inlet cavity, and the valve core is provided with an ODS air outlet hole and an air inlet hole; a second valve body is sealed and connected to the other side of the first valve body; the second valve body comprises: a first mounting through-hole, which penetrates the top of the second valve body; a first air inlet chamber, which is connected to the air outlet channel, a second air inlet chamber, which is located in the first air inlet chamber, and a small flow screw is provided on the side of the second air inlet chamber to keep it unobstructed so that the gas in the first air inlet chamber can enter the second air inlet chamber; the second air inlet chamber The top wall of the chamber is provided with an adjustment inlet, which corresponds to the first installation through-hole; a second solenoid valve is installed in the first installation through-hole, the second solenoid valve seals the second valve body through a sealing membrane, and the bottom of the second solenoid valve is connected to a first movable seat with a sealing gasket; the first movable seat is controlled to move up or down by the second solenoid valve to adjust the opening degree of the adjustment inlet and the intake flow rate of the gas in the first air intake chamber into the second air intake chamber; the second solenoid valve is controlled by a remote controller; a third valve body is sealed and connected to the other side of the second valve body, and the third valve body is provided with: a third air intake chamber , which is connected to the second air inlet chamber; a sealed chamber, which is connected to the third air inlet chamber, and the bottom of the sealed chamber is sealed with a fixing screw; an air outlet interface, which is connected to the sealed chamber for gas outlet; a second mounting hole, which is provided on the third valve body and corresponds to the sealed chamber; and a third solenoid valve, which is provided in the second mounting hole and seals the second mounting hole with a sealing film; the bottom of the third solenoid valve is connected to a second movable seat; a reset spring is provided between the bottom of the second movable seat and the fixing screw; the third solenoid valve drives the second movable seat to seal or open the sealed chamber; the third solenoid valve is controlled by the remote control.

[0007] Preferably, an inner wall of the hollow inner cavity of the first valve body forms an inwardly recessed sealing block at the junction of the storage inner cavity and the air intake inner cavity.

[0008] Preferably, a reset steel needle is provided on the inner wall of the second air inlet chamber, and the reset steel needle corresponds to the bottom of the movable seat.

[0009] Preferably, a spiral fixing hole is formed downwardly on the top wall of the second valve body, and the spiral fixing hole is used for installing the second solenoid valve.

[0010] Due to the adoption of the above technical solution, the present invention has a simple structure and relatively low cost; the present invention can realize breakpoint-free gas flow switching through the cooperation of the second air inlet chamber, the small flow screw and the solenoid valve, which is convenient for remote control and has multiple options. At the same time, the control valve of the present application has the function of remotely controlling the main burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of an embodiment of the present application;

[0012] Figure 2 This is a schematic structural diagram of an embodiment of the present application in the ignition gear;

[0013] Figure 3 This is a schematic structural diagram of an embodiment of the present application at a high fire level;

[0014] Figure 4 This is a structural diagram of an embodiment of the present application at a low fire level.

[0015] Figure 5 and Figure 6 Two schematic diagrams showing the main burner in the closed state. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0017] See also Figure 1 FIG2 is a schematic diagram of the structure of an embodiment of the present application. The flow control valve of this embodiment includes a first valve body 1, a valve seat 2, a valve core 3, a first solenoid valve 4, a valve stem 5, a valve cover 6, a second valve body 7, and a second solenoid valve 8.

[0018] The interior of the first valve body 1 is hollow. Its inner wall is recessed toward the center, forming a sealing block 11. This seal divides the interior into a communicating lower storage chamber 12 and an upper outlet chamber 13. On one side of the first valve body 1 are a gas inlet port 14, which communicates with the storage chamber 12, and an ODS port 15, which communicates with the intake chamber 13. On the other side of the first valve body 1 is an outlet channel 16, which communicates with the intake chamber 13 and is in communication with the second valve body 7.

[0019] The valve seat 2 is provided at the bottom of the first valve body 1. A first solenoid valve 4 is provided on the valve seat 2. The first solenoid valve 4 is provided in the storage cavity 12. A spring 21 is sleeved on the movable rod of the first solenoid valve 4, and a first sealing gasket 22 is provided on the top of the first solenoid valve 4. Under the action of the spring 21 and the first solenoid valve 4, the sealing gasket 22 can be pushed against the bottom of the sealing block 11 to tightly seal the outlet of the storage cavity 12, preventing air from entering. Figure 1 can also be unsealed under the action of the first solenoid valve 4 to facilitate the gas outlet 12 of the storage cavity into the intake cavity 13 .

[0020] The valve core 3 is located in the air inlet cavity 13 and is sealed in the first valve body by the valve cover 6. The valve stem 5 is installed on the valve core 3 and is sealed by the compression spring 51, the retaining ring 52, the gasket 53 and the sealing ring 54 to ensure that the side wall of the valve core and the inner wall of the air inlet cavity 13 are sealed so that the gas can only flow through the valve core 3 to the outlet above it. The valve core 3 is provided with an ODS outlet hole 31 and an air inlet hole 32, as shown in FIG. Figure 3 As shown, the ODS outlet 31 rotates under the drive of the valve stem 5 and communicates with the ODS interface 15; the air inlet 32 ​​rotates under the drive of the valve stem 5 and communicates with the air outlet channel 16. The ODS controls the first solenoid valve 1 to open and close the gas inlet.

[0021] like Figure 1 As shown, a second valve body 7 is connected to the other side of the first valve body 1 through a fixing member and a sealing member. A first air inlet chamber 71 is provided in the second valve body 7, and the first air inlet chamber 71 is communicated with the air outlet channel 16 of the first valve body. Figure 3 In the gear shown, the gas directly enters the first air inlet chamber 71. A second air inlet chamber 72 is provided in the first air inlet chamber 71. As shown in the figure, a small flow screw 73 is provided on one side of the second air inlet chamber 72 to keep it unobstructed. The gas in the first air inlet chamber 71 is as follows: Figure 3 As shown, the gas directly enters the second air inlet chamber 72 through the small flow screw 73. An adjusting inlet 75 is provided on the top wall of the second air inlet chamber 72. At the same time, a second solenoid valve 8 is installed on the outside of the second valve body 7. The telescopic rod of the second solenoid valve 8 penetrates the outer wall of the second valve body 7 and seals the second valve body with a sealing membrane 83. The bottom of the telescopic rod of the second solenoid valve 8 is connected to a movable seat 82 with a sealing gasket 81. The second solenoid valve 8 controls the upward or downward movement of the movable seat 82 to control the opening degree of the adjusting inlet 75, thereby achieving the effect of adjusting the gas flow. The second solenoid valve 8 is adjusted by remote control, without the need to manually switch the valve core, and is easy to operate.

[0022] like Figure 1As shown, the third valve body 10 is sealedly connected to the other side of the second valve body 7 and communicates with the second air inlet chamber 72. The third valve body 10 is provided with a third air inlet chamber 102, a sealed chamber 103, an air outlet port 104, and a second mounting hole 105. The third air inlet chamber 102 communicates with the second air inlet chamber 72. The sealed chamber 103 communicates with the third air inlet chamber, and the bottom of the sealed chamber 103 is sealed with a fixing screw 106. The air outlet port 104 communicates with the sealed chamber 103 to allow gas to escape. A second mounting hole 105 is provided on the third valve body 10, located directly above the sealed chamber 103. A third solenoid valve 101 is mounted in the second mounting hole 105, which is sealed with a sealing membrane. The bottom of the third solenoid valve 101 is connected to a second movable seat 107, with a return spring 108 disposed between the bottom of the second movable seat 107 and the fixing screw 106. The third solenoid valve 101 drives the second movable seat 107 to seal or open the sealed cavity. The third solenoid valve is remotely controlled by a remote controller.

[0023] like Figure 4 The figure shows a schematic diagram of the structure of an embodiment of the present application in the low-fire mode. When the first solenoid valve is opened, the gas enters the first air intake chamber 71 of the second valve body 7 through the first valve body 1. When the second solenoid valve is closed, the gas enters the second air intake chamber 72 through the low-flow screw 73, and finally passes through the third valve body 10, opens the sealed chamber 103 through the third solenoid valve, and then enters the main burner.

[0024] like Figure 3 The figure shows a schematic diagram of the structure of an embodiment of the present application in high-fire mode. Gas enters the first air inlet chamber 71 of the second valve body 7 through the first valve body 1. The second solenoid valve opens the regulating inlet 75. Simultaneously, gas enters the second air inlet chamber 72 through the small-flow screw 73 and the regulating inlet 75, increasing the gas flow rate. Finally, the gas passes through the third valve body 10, opens the sealed chamber 103 through the third solenoid valve, and enters the main burner. The second solenoid valve is remotely controlled to control the opening of the regulating inlet 75. Since the small-flow screw 73 is always unobstructed, seamless gas flow switching can be achieved without any brief interruptions in the gas flow, ensuring a continuous gas supply and stable regulation.

[0025] like Figure 5-Figure 6 As shown, the third valve body 10 and the third solenoid valve 101 control the on-off of the gas supplied to the main burner to increase the safety of use.

[0026] In addition, a reset steel needle 9 is provided on the inner wall of the second air inlet chamber 72 to ensure that the sealing gasket 81 on the movable seat 82 of the second solenoid valve 7 completely seals the regulating inlet 75 .

[0027] A spiral fixing hole 76 is formed downwardly on the top wall of the second valve body 7 , and the spiral fixing hole 76 is used to install the second solenoid valve 8 , making the entire structure compact.

[0028] In summary, the present invention offers a simple overall structure, convenient operation, and relatively low cost. The coordination of the second air inlet chamber, the low-flow screw, and the solenoid valve enables seamless gas flow switching, facilitating remote control and offering a wide range of options. The third valve body 10 and third solenoid valve 101 control the flow of gas to the main burner, increasing the functionality and safety of the control valve.

[0029] The above embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. Equivalent changes and modifications made by those skilled in the art to the present invention should all fall within the scope of the claims appended hereto.

Claims

1. A control valve for adjusting flow rate, characterized in that: include: The first valve body comprises a hollow inner cavity, a gas inlet port and an ODS port provided on one side of the first valve body, and an outlet passage provided on the other side of the first valve body; the hollow inner cavity is divided into a lower storage inner cavity and an upper outlet inner cavity, wherein the gas inlet port corresponds to the storage inner cavity, and the ODS port corresponds to the outlet inner cavity; a valve seat disposed at the bottom of the first valve body; a first solenoid valve and a first sealing gasket disposed on the top of the first solenoid valve are disposed on the valve seat; the first solenoid valve controls the first sealing gasket to seal or unseal the outlet of the storage cavity; A valve core is sealed in the air inlet cavity by a valve stem, a compression spring and a sealing member, and is restricted by a valve cover; a side wall of the valve core is sealed with an inner wall of the air inlet cavity, and the valve core is provided with an ODS air outlet and an air inlet; The second valve body is sealed and connected to the other side of the first valve body; the second valve body comprises: a first mounting through-hole penetrating through the top of the second valve body; A first air inlet chamber is connected to the air outlet channel, A second air inlet chamber is located within the first air inlet chamber. A small flow screw is provided on a side of the second air inlet chamber to maintain unobstructed flow, so that the gas in the first air inlet chamber can enter the second air inlet chamber. An adjustable inlet is provided on the top wall of the second air inlet chamber, and the adjustable inlet corresponds to the first mounting through-hole. a second solenoid valve installed in the first mounting through-hole, the second solenoid valve sealing the second valve body via a sealing membrane, and the bottom of the second solenoid valve being connected to a first movable seat with a sealing gasket; the second solenoid valve controlling the first movable seat to move upward or downward to adjust the opening degree of the regulating inlet and the intake flow rate of the gas in the first air intake chamber into the second air intake chamber; the second solenoid valve being controlled by a remote controller; The third valve body is sealed and connected to the other side of the second valve body. The third valve body is provided with: a third air inlet chamber, communicating with the second air inlet chamber; a sealed cavity, which is in communication with the third air inlet cavity, and the bottom of the sealed cavity is sealed by a fixing screw; A gas outlet interface, which is in communication with the sealed cavity for gas outlet; a second mounting hole, which is provided on the third valve body and corresponds to the sealing cavity; and A third solenoid valve is arranged in the second mounting hole, and the second mounting hole is sealed with a sealing film; the bottom of the third solenoid valve is connected to a second movable seat; a reset spring is provided between the bottom of the second movable seat and the fixing screw; the third solenoid valve drives the second movable seat to seal or open the sealing cavity; the third solenoid valve is controlled by the remote control.

2. The control valve for adjusting flow rate according to claim 1, characterized in that: An inner wall of the hollow inner cavity of the first valve body forms an inwardly recessed sealing block at the junction of the storage inner cavity and the air intake inner cavity.

3. The control valve for adjusting flow rate according to claim 1, characterized in that: A reset steel needle is provided on the inner wall of the second air inlet chamber, and the reset steel needle corresponds to the lower side of the movable seat.

4. The control valve for adjusting flow rate according to claim 1, characterized in that: A spiral fixing hole is formed downwardly on the top wall of the second valve body, and the spiral fixing hole is used for installing the second solenoid valve.

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