CN113266500B - Control valve and injector - Google Patents

Abstract

The application discloses a control valve, which comprises a control body provided with a first channel and a second channel, a first controller connected with the first channel and an overflow channel, a second controller connected with the second channel and the overflow channel, and a discharge body provided with a first discharge valve and a second discharge valve; through the state change of control first controller and second controller, can pass through shutoff overflow channel, perhaps relieve the shutoff of overflow channel, change the pressure in first passageway and the second passageway to open or close first bleeder valve and second bleeder valve, thereby independently, the output of two kinds at least materials of accurate control. The application also discloses an ejector, which comprises the control valve, and the control body, the first controller, the second controller and the discharging body are arranged in the same ejector body, so that the integration level is high, the total volume of the ejector can be reduced, and the ejector is convenient to adapt to engines of different models.

Description

Control valve and injector

Technical Field

The application relates to the technical field of fuel injection devices, in particular to a control valve and an injector.

Background

With the continuous upgrading of national emission regulations, natural gas is used as one of alternative fuels, and has better cleanliness and economy, so that the natural gas is applied to gas vehicles in recent years and is rapidly developed in the traffic field.

In order to improve the power of the gas vehicle, the diesel oil and the natural gas are directly injected into the combustion chamber by using the dual-fuel injector, the diesel oil is used for ignition, and the natural gas is used as the main fuel for combustion to do work, so that the heat value efficiency can be effectively improved.

However, the existing dual fuel injector has a complex structure and a large external dimension, and is not beneficial to being installed in an engine cylinder cover.

Disclosure of Invention

The application aims to overcome the defects in the prior art and provide a control valve and an ejector.

In order to achieve the technical aim, the application provides a control valve, which comprises a control body, wherein a first channel and a second channel are arranged in the control body; the first controller is connected with the first channel and the overflow channel; the second controller is connected with the second channel and the overflow channel; the discharging body is internally provided with a first discharging valve and a second discharging valve, the first discharging valve is connected with the first channel, and the second discharging valve is connected with the second channel; the first controller and the second controller each have a first state and a second state; when the first controller is in a first state, the overflow channel is blocked, and the pressure in the first channel acts on the first discharge valve to enable the first discharge valve to be closed; when the first controller is in the second state, the overflow channel is unblocked, and the pressure of the first channel is reduced, so that the first discharge valve is opened; when the second controller is in the first state, the overflow channel is blocked, and the pressure in the second channel acts on the second discharge valve, so that the second discharge valve is closed; when the second controller is in a second state, the overflow channel is unblocked, and the pressure in the second channel is reduced, so that the second discharge valve is opened;

A fifth channel and a sixth channel are also arranged in the discharging body; one end of the fifth channel is communicated with the first material supply device, the other end of the fifth channel is communicated with the first discharge port, and the first discharge valve is arranged at the first discharge port; one end of the sixth channel is communicated with the second material supply device, the other end of the sixth channel is communicated with the second discharge port, and the second discharge valve is arranged at the second discharge port; when the first controller is in a first state, the first discharge valve is closed, and a first material supplied by the first material supply device stays in the fifth channel; when the first controller is in a second state, the first discharge valve is opened, and the first material is output through the first discharge port; when the second controller is in the first state, the second discharging valve is closed, and the second material supplied by the second material supply device stays in the sixth channel; the second controller) is in a second state, the second discharge valve is opened, and a second material is output through the second discharge port;

The first controller and/or the second controller comprises a driving piece, a driving piece and a driven piece; when the first controller or the second controller is in a first state, the driving part drives the driving part to press the driven part, so that the driven part seals the overflow channel; when the first controller or the second controller is in the second state, the driving part drives the driving part to be far away from the driven part, so that the driven part releases the blocking of the overflow channel;

the control valve further comprises a valve seat, and a first control cavity and a second control cavity are arranged in the valve seat; the first control cavity is communicated with the first channel and the overflow channel, and the second control cavity is communicated with the second channel and the overflow channel; when the first controller or the second controller is in the first state, the driven piece is close to the first control cavity or the second control cavity, so that the overflow channel is blocked; when the first controller or the second controller is in the second state, the passive component is far away from the first control cavity or the second control cavity, so that the overflow channel is unblocked.

Further, the discharging body comprises a connecting part and a mouth part; the first discharge hole and the second discharge hole are arranged at the mouth; the fifth channel passes through the connecting part and the mouth part and is connected with the first discharging hole; the sixth channel passes through the connecting part and the mouth part and is connected with the second discharging hole.

Further, the discharging body further comprises a tightening cap, and the tightening cap is used for locking the connection position of the connection part and the mouth.

Further, the first controller and/or the second controller further comprises an elastic piece, and the elastic piece is connected with the driving piece and the driving piece; the elastic force of the elastic piece can enable the active piece to abut against the passive piece.

Further, the first controller and/or the second controller further comprises an elastic mounting block, and the elastic mounting block is arranged on the driving piece; one end of the elastic piece is connected with the elastic installation block, and the other end of the elastic piece is connected with the driving piece.

Further, the first controller and/or the second controller further comprises a guiding piece, the driving piece is slidably arranged on the guiding piece, and the guiding piece can limit the movement direction of the driving piece.

Further, the control valve further comprises a mounting seat, and the driving piece is arranged on the mounting seat; an adjusting washer is arranged between the mounting seat and the valve seat, and the distance between the mounting seat and the valve seat can be adjusted by changing the thickness of the adjusting washer, so that the movement amplitude of the driven piece is adjusted.

Further, the driving piece is an electromagnet; when the electromagnet is electrified, the driving part is subjected to electromagnetic force, so that the driving part is far away from the driven part; when the electromagnet is not electrified, the driving part is not subjected to electromagnetic force, so that the driven part is pressed.

Further, the driving part is a valve core, and the driven part is a valve ball; the valve core is provided with the recess near one side of valve ball, and the valve ball is in the recess, and the recess can inject the contact position of valve ball and valve core, and then guarantees that the valve core accurately acts on the valve ball.

Further, the first channel and the second channel are communicated with a pressurizing device, the pressurizing device enables pressure to be arranged in the first channel and the second channel, the pressure can act on the first discharging valve and the second discharging valve, and the first discharging valve and the second discharging valve are closed.

The application also provides an injector, which comprises the control valve.

The application provides a control valve, which comprises a control body provided with a first channel and a second channel, a first controller connected with the first channel and an overflow channel, a second controller connected with the second channel and the overflow channel, and a discharge body provided with a first discharge valve and a second discharge valve; through the state change of control first controller and second controller, can pass through shutoff overflow channel, perhaps relieve the shutoff of overflow channel, change the pressure in first passageway and the second passageway to open or close first bleeder valve and second bleeder valve, thereby independently, the output of two kinds at least materials of accurate control.

The application also provides an ejector, which comprises the control valve, and the control body, the first controller, the second controller and the discharging body are arranged in the same ejector body, so that the integration level is high, the total volume of the ejector can be reduced, and the ejector is convenient to adapt to engines of different models.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is an enlarged view of the in-loop structure of fig. 1.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The present application provides a control valve comprising: a control body 10, wherein a first channel 11 and a second channel 12 are arranged in the control body 10; a first controller 20 connecting the first passage 11 and the overflow passage; a second controller 30 connecting the second passage 12 and the overflow passage; the discharging body 40 is internally provided with a first discharging valve and a second discharging valve.

Wherein the first controller 20 and the second controller 30 each have a first state and a second state; when the first controller 20 is in the first state, the overflow channel is blocked, and the pressure in the first channel 11 acts on the first discharge valve, so that the first discharge valve is closed; when the first controller 20 is in the second state, the overflow channel is unblocked, and the pressure in the first channel 11 is reduced, so that the first discharge valve is opened.

Similarly, when the second controller 30 is in the first state, the overflow channel is blocked, and the pressure in the second channel 12 acts on the second discharge valve, so that the second discharge valve is closed; when the second controller 30 is in the second state, the overflow passage is unblocked and the pressure in the second passage 12 is reduced such that the second discharge valve is opened.

Specifically, when the overflow channel is blocked, the pressure in the first channel 11 stabilizes, which pressure acts on the first outlet valve, so that the first outlet valve is in a closed state. When the overflow channel is clear, part of the pressure in the first channel 11 and the third channel leaves through the overflow channel, resulting in insufficient pressure in the first channel 11 to press the first discharge valve closed, so the first discharge valve is open.

Similarly, when the overflow channel is blocked, the pressure in the second channel 12 stabilizes, and the pressure acts on the second discharge valve, so that the second discharge valve is in a closed state. When the overflow channel is clear, part of the pressure in the second channel 12 leaves through the overflow channel, resulting in insufficient pressure in the second channel 12 to press the second discharge valve closed, so the second discharge valve is open.

It should be added that the overflow channel connected to the first channel 11 may be different from the overflow channel connected to the second channel 12, or the first channel 11 and the second channel 12 may be connected to the same overflow channel, as long as the overflow channel can share the pressure in the first channel 11 and the second channel 12, which is not limited by the present application.

Further, a third channel and a fourth channel may be further disposed in the discharging body 40, one end of the third channel is connected to the first channel 11, the other end of the third channel is connected to the first discharging valve, one end of the fourth channel is connected to the second channel 12, and the other end of the fourth channel is connected to the second discharging valve.

Further, the first channel 11 and the second channel 12 are communicated with a pressurizing device, the pressurizing device enables pressure to be arranged in the first channel 11 and the second channel 12, and the pressure can act on the first discharging valve and the second discharging valve, so that the first discharging valve and the second discharging valve are closed.

Wherein the pressurizing means can supply liquid to the first passage 11 and the second passage 12, and is closed by hydraulic pressure to the discharge valve (first discharge valve or second discharge valve); the gas can be supplied to the first channel 11 and the second channel 12, and the gas can be compressed by the air pressure until the discharge valve is closed; the first channel 11 and the second channel 12 can be supplied with solid, and the solid is pressed by the gravity of the object until the discharge valve is closed; so long as the pressure means supply pressure is able to move in the first channel 11 and the overflow channel, or in the second channel 12 and the overflow channel.

Preferably, the pressurizing device is used for supplying liquid, and the pressure stability of the liquid when acting on the discharge valve can be ensured while the liquid is easy to flow.

It is also necessary that the overflow channel is able to communicate with a reservoir for receiving the pressure body discharged for depressurization. Or the overflow channel can be communicated with the pressurizing device, at the moment, the overflow channel has a reflux effect, and the pressure body discharged for depressurization can be sent back to the pressurizing device again, so that the practical circulation of the pressure body is realized.

Further, a fifth channel and a sixth channel are further arranged in the discharging body 40; one end of the fifth channel is communicated with the first material supply device, the other end of the fifth channel is communicated with the first discharge port 43, and the first discharge valve is arranged at the first discharge port 43; one end of the sixth channel is communicated with the second material supply device, the other end of the sixth channel is communicated with the second discharge port 44, and the second discharge valve is arranged at the second discharge port 44; when the first controller 20 is in the first state, the first discharging valve is closed, and the first material supplied by the first material supply device stays in the fifth channel; when the first controller 20 is in the second state, the first discharge valve is opened, and the first material is output through the first discharge port 43; when the second controller 30 is in the first state, the second discharging valve is closed, and the second material supplied by the second material supply device stays in the sixth channel; when the second controller 30 is in the second state, the second discharge valve is opened, and the second material is output through the second discharge port 44.

Wherein the first material supply device is used for supplying a first material, and the first material can be output through the fifth channel and the first discharging hole 43. The second material supply device is used for supplying second material, and the second material can be output through the sixth channel and the second discharge port 44. Thereby, the control valve is capable of achieving an output of at least two materials.

Specifically, the first material supply device can continuously supply the first material to the fifth channel. However, when the first controller 20 is in the first state, the first material cannot be output due to the closing of the first discharge valve; after the first controller 20 is in the second state and the first discharge valve is opened, the first material is output through the first discharge port 43.

Similarly, the second material supply device can continuously supply the first material to the sixth channel. The details are not described in detail.

Further, in order to prevent the pressure body supplied from the pressurizing means from contaminating the discharge port (the first discharge port 43 or the second discharge port 44), the pressurizing means may supply the first material or the second material to the first passage 11 and the second passage 12, so that the pressure body is contacted with the discharge valve, and the pressure body stained on the discharge valve does not interfere with the finally output material.

Further, a plurality of first discharge ports 43 and/or second discharge ports 44 may be disposed in the discharge body 40, and the plurality of discharge ports may be disposed at different positions, or each discharge port may be connected to a different receiving mechanism (not shown), so as to enable multi-position material delivery.

In summary, by changing the states of the first controller 20 and the second controller 30, independent output of different materials can be realized; by controlling the state durations of the first controller 20 and the second controller 30, the output durations of different materials can be adjusted; by changing the states of the different controllers (the first controller 20 or the second controller 30), materials in different sequences can be adaptively output; thereby improving the precision of material output.

In particular to an embodiment, the control valve provided by the application can be applied to a gas engine. At this time, the first material may be natural gas, and the second material may be diesel. When the gas engine works, the second controller 30 firstly changes from the first state to the second state, so that the second discharge valve is opened, diesel oil supplied by the second material supply device enters the combustion chamber through the sixth channel and the second discharge port 44, and the diesel oil is used as an ignition agent, so that the quick work of the combustion chamber can be realized. Subsequently, the second controller 30 returns to the first state, and the second discharge valve is closed, stopping the supply of diesel fuel to the combustion chamber. Then, the first controller 20 changes from the first state to the second state, so that the first discharge valve is opened, and natural gas supplied by the first material supply device enters the combustion chamber through the fifth channel and the first discharge port 43, and the natural gas serves as a main combustion agent, so that continuous and stable combustion can be performed. When the gas engine is stopped, the first controller 20 returns to the first state, the first discharge valve is closed, and the natural gas is stopped being fed into the combustion chamber.

In other embodiments, the control valve provided by the application can also be applied to equipment such as a printer, a dyeing machine and the like to realize the output of materials such as different materials and different dyes, and detailed description is omitted.

In one embodiment, the discharging body 40 is only used for discharging materials, and at this time, the fifth channel connected to the first material supply device is directly connected to the first discharging port 43, and the sixth channel connected to the second material supply device is directly connected to the second discharging port 44.

In yet another embodiment, the discharging body 40 includes a connecting portion 41 and a mouth 42; the first discharging hole 43 and the second discharging hole 44 are arranged at the mouth 42; the fifth channel passes through the connecting part 41 and the mouth 42 and is connected with the first discharging hole 43; the sixth passage passes through the connection 41 and the mouth 42 and is connected to the second outlet 44.

By arranging the discharge body 40 to include a plurality of portions, the direction and the number of the fifth channels and the first discharge ports 43 can be conveniently changed, so that the fifth channels are accurately communicated with the first discharge ports 43 at different positions. Similarly, the discharge body 4 comprises a plurality of parts, so that the trend and the number of the sixth channel and the second discharge holes 44 can be conveniently changed, and the sixth channel can be conveniently and accurately communicated with the second discharge holes 44 at different positions.

For example, in the embodiment shown in fig. 1, the mouth 42 is provided with two first discharge openings 43, and the two first discharge openings 43 are all disposed obliquely; at this time, two fifth channels (not shown) may be formed on the connecting portion 41, and any one of the fifth channels communicates with the first material supply device and one of the first discharge ports 43.

When the discharging body 40 includes a plurality of portions, the direction and/or number of the channels are changed in different portions according to the setting requirements of the direction and number, which is more convenient to implement than when the discharging body 40 is a whole.

In addition, the material may require secondary processing such as machining, pressurization, humidification, etc. before the material is output to the corresponding receiving mechanism. The discharging body 40 is provided with a plurality of parts, and each part can be independently provided with a processing mechanism (not shown) so as to facilitate secondary processing of the materials.

For example, in the embodiment shown in fig. 1, in addition to the fifth channel and the sixth channel, a pressure control device (not shown) is further provided in the connecting portion 41, and after the material enters the connecting portion 41, the pressure control device may pressurize or depressurize the material according to the requirement of the receiving mechanism, and finally, the material with a suitable pressure is input into the mouth 42. At this time, a control device (not shown) can be further provided in the mouth 42, so that the output flow, the output position and the output time length of the material can be further precisely controlled, and smooth operation of the receiving mechanism can be ensured.

It is easy to understand that the discharging body 40 not only can be used as a material circulation channel, but also can be used as a material output control mechanism, so that the condition of material output can be precisely regulated and controlled, and the downstream requirement can be better met.

In order to avoid leakage of the material flowing through different parts of the discharging body 40, a sealing ring may be disposed between the connecting portion 41 and the mouth 42, which is not described in detail.

Further, the discharging body 40 further comprises a tightening cap 45, and the tightening cap 45 is used for locking the connection position of the connection part 41 and the mouth 42.

In particular, in the embodiment, the inner surface of the tightening cap 45 may be provided with internal threads, and the outer surfaces of the connecting portion 41 and the mouth 42 may be provided with external threads, so that the tightening cap 45 may be screwed when connected to the respective portions. Or the tightening cap 45 may be used to tighten the various portions of the tap body 40 with a hoop. Or the tightening cap 45 may be welded or screwed on to the exterior of the tap body 40.

Through setting up tight cap 45, can connect connecting portion 41 and mouth 42 steadily, guarantee that the ejection of compact body 40 that the components of a whole that can function independently set up stable in structure, and then ensure that the circulation passageway of material is smooth and easy.

Still further, the tightening cap 45 may also be used to lock the connection position of the control body 10 and the tap body 40. The details are not described in detail.

In addition, the discharging body 40 may include two tightening caps 45, which lock the connection portion 41 with the mouth 42, and the control body 10 and the connection portion 41, respectively. Alternatively, the discharging body 40 may include only one tight cap 45, and referring to fig. 1, the connection portion 41 is completely disposed in the tight cap 45, the lower end of the control body 10 extends into the tight cap 45 to be connected to the connection portion 41, and the upper end of the mouth 17 extends into the tight cap 45 to be connected to the connection portion 41.

Wherein the first controller 20 and/or the second controller 30 comprises a driving member 21, an active member 22 and a passive member 23; when the first controller 20 or the second controller 30 is in the first state, the driving member 21 drives the driving member 22 to press the driven member 23, so that the driven member 23 blocks the overflow channel; when the first controller 20 or the second controller 30 is in the second state, the driving member 21 drives the driving member 22 away from the driven member 23, so that the driven member 23 unblocks the overflow channel.

It is to be understood that the structures of the first controller 20 and the second controller 30 may be identical or different. In a specific embodiment, referring to fig. 1 and 2, the first controller 20 and the second controller 30 have the same structure and are arranged side by side, which is convenient for electrical control, and can integrate layout and simplify the design of the whole control valve.

For convenience of description, the first controller 20 is hereinafter described as an example.

The driving member 21 is coupled to the driving member 22 and is capable of providing at least a pushing force to the driving member 22 to bring it closer to the driven member 23, or is capable of providing at least a pulling force to the driving member 22 to move it away from the driven member 23.

Specifically, when the driving member 21 applies a pushing force, the driving member 22 is controlled to abut against the driven member 23, so as to press the driven member 23 against the first channel 11 or the overflow channel, so that the overflow channel is not communicated with the first channel 11, and the pressure in the first channel 11 is ensured to be enough to close the first discharge valve; at this time, the first controller 20 is in the first state. After the driving piece 21 removes the thrust, the driving piece 22 cannot continuously press the driven piece 23, the driven piece 23 cannot press the first channel 11 or the overflow channel, the overflow channel is communicated with the first channel 11, the pressure in the first channel 11 is reduced, the first discharge valve is opened, and the first material can be smoothly output through the sixth channel and the first discharge port 13; at this time, the first controller 20 is in the second state.

Or specifically, when the driving member 21 applies a pulling force, the driving member 22 is controlled to be away from the driven member 23, the driven member 23 cannot press the first channel 11 or the overflow channel, the overflow channel is communicated with the first channel 11, and the first discharge valve is opened; at this time, the first controller 20 is in the second state. When the driving piece 21 removes the pulling force, the driving piece 22 approaches to the pressing driven piece 23, so that the pressing driven piece 23 is pressed on the first channel 11 or the overflow channel, the overflow channel is not communicated with the first channel 11, and the first discharging valve is closed; at this time, the first controller 20 is in the second state.

In one embodiment, the driving member 21 not only can provide a pushing force to the driving member 22 to approach the driven member 23, but also can provide a pulling force to the driving member 22 to move away from the driven member 23, so as to facilitate the driving member 22 to approach or move away from the driven member 23 rapidly.

In another embodiment, the driving member 21 can only provide a pushing force to the driving member 22 to bring it close to the pressing member 23. At this time, the driving member 21 removes the pushing force, the driving member 22 cannot abut against the driven member 23, the driven member 23 cannot be kept at the blocking position to press the first channel 11 or the overflow channel, the pressure in the first channel 11 makes the driven member 23 leave the blocking position, the overflow channel is communicated with the first channel 11, the first discharge valve is opened, and the first material is output.

In yet another embodiment, the driving member 21 is only capable of providing a pulling force to the driving member 22 away from the driven member 23. At this time, the driving member 21 removes the pulling force, and the driving member 22 moves toward the driven member 23 under the influence of its own weight and finally presses against the driven member 23. The passive part 23 is under the pressure of the active part 22 to block the first channel 11 or overflow channel, so that the first channel 11 is stabilized by pressure, and the first discharge valve is closed.

Further, when the driving member 21 can only provide a pushing force to the driving member 22 to approach the driven member 23, the driving member 22 can be far away from the driven member 23 after the driving member 21 removes the pushing force; or when the driving member 21 can only provide a pulling force to the driving member 22 to move away from the driven member 23, in order to ensure that the driving member 22 can press the driven member 23 after the driving member 21 removes the pulling force, the first controller 20 and/or the second controller 30 further includes an elastic member 24, where the elastic member 24 connects the driving member 21 and the driving member 22; the elastic force of the elastic member 24 can make the active member 22 abut against the passive member 23.

Specifically, when the driving member 21 only provides a pushing force for the driving member 22 to approach the driven member 23, the working end of the driving member 21 acts on the driving member 22, and the driving member 21 works to drive the driving member 22 to approach the driven member 23, so as to realize the blocking of the overflow channel by the driven member 23. After the driving member 21 removes the pushing force, the working end of the driving member 21 is far away from the driven member 23, and the elastic member 24 pulls the driving member 22 to move along with the driving member 21 and far away from the driven member 23.

Or specifically, when the driving member 21 only provides a pulling force to the driving member 22 to move away from the driven member 23, the driving member 21 works to drive the driving member 22 away from the driven member 23, and the driving member 22 is compressed near the driving member 21 and the elastic member 24. After the driving member 21 removes the pulling force, the elastic member 24 returns to the original state, so that the driving member 22 is far away from the driving member 21, and the elastic force of the elastic member 24 further acts on the driving member 22, so that the driving member 22 abuts against the driven member 23.

The elastic piece 24 is arranged, on one hand, the driving piece 22 is ensured to be accurately close to or far away from the driven piece 23 through the deformation characteristic of the elastic piece 24, so that the blocking of the overflow channel by the driven piece 23 is realized, or the blocking of the overflow channel by the driven piece 23 is relieved; on the other hand, the driving member 22 can elastically press against the driven member 23, so as to avoid rigid contact and damage to the structure of the two members.

The elastic member 24 may be a spring, or may be made of a flexible material such as rubber, plastic, etc.

In order to limit the deformation direction of the elastic member 24, in one embodiment, referring to fig. 2, a guide groove is provided at the working end of the driving member 21, and the guide groove is directed to the driven member 23. The elastic member 24 is partially disposed in the guide groove, partially protrudes from the guide groove, and is connected to the driving member 22. Thus, when the elastic member 24 is compressed, the elastic member is restricted by the guide groove and naturally retracts into the guide groove; similarly, when the elastic member 24 rebounds, the elastic member is limited by the guide groove and is released along the extending direction of the guide groove, so that the passive member 23 is prevented from deviating from a preset blocking position when the active member 22 and the passive member 23 relatively move, and the accurate matching of the active member 22 and the passive member 23 is ensured.

Further, the first controller 20 and/or the second controller 30 further include an elastic mounting block 25, and the elastic mounting block 25 is disposed on the driving member 21; one end of the elastic member 24 is connected with an elastic mounting block 25, and the other end of the elastic member 24 is connected with the driving member 22.

Referring specifically to fig. 2, the elastic mounting block 25 is disposed in the guide groove, and the elastic member 24 is disposed on the elastic mounting block 25. By arranging the elastic mounting blocks 25 with different thicknesses, the length of the elastic piece 24 extending out of the guide groove can be regulated and controlled, so that the movement amplitude of the driving piece 22 is regulated, and the phenomenon that the driving piece 22 is completely separated from the driven piece 23, and the driving piece 22 cannot accurately press the driven piece 23 when the driving piece 22 and the driven piece are close to each other again is avoided; or to avoid that the distance of the active element 22 from the passive element 23 is too small, which may cause the passive element 23 to obstruct the communication between the first channel 11 and the overflow channel or to influence the flow of pressure body in the overflow channel.

In other embodiments, a guide post may be provided at the working end of the driving member 21, the guide post points to the driven member 23, and the elastic member 24 is sleeved on the guide post. At this time, the guide post can also define the deformation direction of the elastic member 24. The details are not described in detail.

Further, the first controller 20 and/or the second controller 30 further include a guide member 26 defining a movement direction of the driving member 22, the driving member 22 is slidably disposed on the guide member 26, and the guide member 26 is capable of defining the movement direction of the driving member 22.

It should be noted that the movement direction of the driving member 22 is the direction in which the driving member 22 approaches or moves away from the driven member 23. It is easy to understand that if the movement direction of the driving member 22 is uncertain, it cannot be guaranteed that when the driving member 22 approaches the driven member 23 again, the driving member 22 can accurately press the driven member 23 to block the overflow channel. Therefore, the movement direction of the driving member 22 needs to be limited, and when the movement direction of the driving member 22 is consistent, the driving member 22 moves on a preset path each time, so that the driving member 22 can be ensured to accurately act on the driven member 23.

In one embodiment, the guide member 26 may be a guide member such as a guide rod or a guide rail, the guide member 26 points toward the passive member 23 and the first channel 11, and the active member 22 is slidably disposed on the guide member 26 and can approach or separate from the passive member 23 along the guide member 26.

In another embodiment, the guiding element 26 may be a block member with a guiding slot, the guiding slot points to the passive element 23 and the first channel 11, the driving element 22 is clamped in the guiding slot, and the driving element 22 is limited by the guiding slot and can approach or separate from the passive element 23 along the guiding slot.

Further, the control valve further comprises a valve seat 50, and a first control cavity 51 and a second control cavity 52 are arranged in the valve seat 50; the first control cavity 51 is communicated with the first channel 11 and the overflow channel, and the second control cavity 52 is communicated with the second channel 12 and the overflow channel; when the first controller 20 or the second controller 30 is in the first state, the passive element 23 approaches the first control cavity 51 or the second control cavity 52, so that the overflow channel is blocked; when the first controller 20 or the second controller 30 is in the second state, the passive element 23 is far away from the first control cavity 51 or the second control cavity 52, so that the overflow channel is unblocked.

Specifically, the first control chamber 51 is provided between the first passage 11 and the overflow passage, and the pressure in the first passage 11 needs to pass through the first control chamber 51 and then enter the overflow passage. Thus, the pressure variation in the first channel 11 can be controlled by blocking the first control chamber 51 by the passive element 23.

Similarly, the second control chamber 52 is disposed between the second passage 12 and the overflow passage, and the pressure in the second passage 12 needs to pass through the second control chamber 52 and then enter the overflow passage. Thus, by blocking the second control chamber 52 by the passive element 23, the pressure variation in the second channel 12 can be controlled.

By providing the valve seat 50, the discharging body 40 and the first controller 20, and the discharging body 40 and the second controller 30 can be stably connected, so that the closing condition of the first channel 11 and the second channel 12 can be conveniently influenced by the passive component 23.

It is to be added that the valve seat 50 may comprise two parts, a first control chamber 51 and a second control chamber 52, respectively. Alternatively, the valve seat 50 may include only one portion on which the first control chamber 51 and the second control chamber 52 are simultaneously provided; referring specifically to FIG. 2, in the illustrated embodiment, the first controller 20 and the second controller 30 are disposed side by side, and the first control chamber 51 and the second control chamber 52 are also disposed side by side on the valve seat 50; thereby, the device structure can be further simplified and integrated.

Further, the control valve further comprises a mounting seat 1, and the driving piece 21 is arranged on the mounting seat 1; an adjusting washer 2 is arranged between the mounting seat 1 and the valve seat 50, and the distance between the mounting seat 1 and the valve seat 50 can be adjusted by changing the thickness of the adjusting washer 2, so that the movement amplitude of the driven member 23 can be adjusted.

It is easy to understand that when the pressure of the first channel 11 is divided by the overflow channel, the passive component 23 can be completely separated from the preset blocking position, or can be partially separated from the blocking position, so long as the first channel 11 is partially communicated with the overflow channel, the pressure in the first channel 11 can be reduced. However, the degree to which the passive member 23 is away from the blocking position affects the speed and the volume of the pressure decrease in the first channel, thereby affecting the speed and the opening degree of the opening of the first discharge valve, and finally affecting the condition of the first material output. Therefore, in order to meet the material conveying speed required in actual operation and the matching requirement of the driving member 22 and the driven member 23, the movement range of the driven member 23 needs to be adaptively adjusted.

By arranging the adjusting washer 2, the distance between the mounting seat 1 and the valve seat 50 can be conveniently changed, and as the driving piece 21 is arranged on the mounting seat 1, the controlled distance of the driving piece 22 from the driven piece 23 is influenced by the position of the mounting seat 1; the extent to which the passive element 23 is remote from the blocking position is influenced by the position of the active element 22 when it is remote from the passive element 23. Therefore, when the thickness of the adjusting washer 2 is changed, the degree to which the driving member 22 is controlled to be far away from the driven member 23 is changed, so that the degree to which the driven member 23 is far away from the blocking position is further changed, and finally, the movement amplitude of the driven member 23 is adjusted.

The adjusting washer 2 may be a spring or made of flexible materials such as rubber and plastic, and at this time, the distance between the mounting seat 1 and the valve seat 50 may be adaptively adjusted by compressing the adjusting washer 2. Alternatively, the adjusting washers 2 may be provided as rigid standard parts having standard thickness, and the distance between the mounting seat 1 and the valve seat 50 may be adjusted by stacking different numbers of adjusting washers 2.

Further, the mounting seat 1 is connected with the discharging body 40, and a first sealing ring 3 is arranged between the mounting seat 1 and the discharging body 40. By providing the first sealing ring 3, leakage of the pressure body from between the two can be prevented, and other factors are avoided from affecting the pressure in the first channel 11.

Further, the control valve further comprises a fastener 4, wherein the fastener 4 is arranged on the mounting seat 1 and is connected with the discharging body 40. The fastener 4 is used for stabilizing the connection between the mounting seat 1 and the discharging body 40, and guaranteeing the relative positions of the first controller 20, the first channel 11 and the overflow channel, and the second controller 30, the second channel 12 and the overflow channel to be stable.

In one embodiment, referring to fig. 1, the fastener 4 is substantially cylindrical, and is partially fixedly disposed outside the mounting base1 and partially protrudes from the mounting base1. The inner surface of the protruding portion of the fastener 4 is provided with an internal thread, and the outer surface of the discharge body 40 is provided with an external thread, so that the protruding portion of the fastener 4 can be screwed with the discharge body 40. The mounting seat 1 and the discharging body 40 can be quickly and simply assembled and disassembled by matching the internal threads and the external threads.

In one embodiment, the driving member 21 is an electromagnet; when the electromagnet is electrified, the driving piece 22 receives electromagnetic force, so that the driving piece is far away from the driven piece 23; when the electromagnet is not electrified, the driving piece 22 is not subjected to electromagnetic force, so that the driven piece 23 is pressed.

At this time, the driving member 22 has a metal portion that can be attracted. When subjected to electromagnetic force, the driving member 22 is close to the electromagnet and far away from the driven member 23. When the electromagnetic force is not applied, the driving member 22 is affected by the dead weight, or the driving member 22 is affected by the elastic force of the elastic member 24, and is far away from the electromagnet and close to the pressing passive member 23.

In other embodiments, the driving member 21 may be a driving member such as an air cylinder or an electric cylinder, as long as the driving member 22 can be forced, and the present application is not limited thereto.

In one embodiment, the driving member 22 is a valve core, and the driven member 23 is a valve ball; the valve core is provided with the recess near one side of valve ball, and the valve ball is in the recess, and the recess can inject the contact position of valve ball and valve core, and then guarantees that the valve core accurately acts on the valve ball.

Referring to fig. 2, the groove is configured to be arc, and when the driving member 22 abuts against the driven member 23, the bottom of the groove can effectively contact the driven member 23 to apply force to the driven member 23, so as to ensure that the driven member 23 accurately blocks the first channel 11. When the driving member 22 is far away from the driven member 23, the groove does not need to be completely separated from the driven member 23, specifically, the top of the groove at the opening of the groove is not higher than the highest point of the driven member 23, so that after the driven member 23 is not affected by external force, the driven member 23 can not be separated from the first channel 11, but cannot leave the action range of the driving member 22, and even if the driven member 23 moves in other directions, the driven member 23 can be blocked by the inner wall of the groove. Meanwhile, due to the characteristic of the arc, when the driving member 22 is controlled to be close to the driven member 23, the groove can also guide the driven member 23 to move to a preset blocking position until the bottom of the groove effectively contacts the driven member 23.

In addition, the passive component 23 adopts a spherical valve ball, and when the valve ball blocks a channel (the first channel 11 or the overflow channel) due to the characteristic of an arc, as the valve ball continuously goes deep into the channel, the part with larger outer diameter of the valve ball can be blocked at the channel port, so that the channel port is sealed, and the blocking effect is ensured. Meanwhile, when the valve ball releases the blocking of the channel, once the valve ball is far away from the channel, the originally sealed channel port is opened, the internal pressure of the first channel 11 is changed, and the diversion of the pressure on the first discharge valve can be rapidly realized.

In other embodiments, the driving member 22 and the driven member 23 may also have other structures capable of contacting each other, which is not limited by the present application.

The application also provides an injector, which comprises the control valve.

In particular to the embodiment, the injector can be arranged in a gas engine, and the gas engine can work efficiently by controlling the output of diesel oil and natural gas through a control valve.

Specifically, the injector further comprises an injector seat, the control valve is arranged on the injector seat, and a second sealing ring is arranged between the control valve and the injector seat. Through setting up the second sealing washer can avoid pressure body or material to reveal outside, can also play anti-skidding effect, further firm control valve and the connection of sprayer seat.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (11)

1. A control valve, comprising:

A control body (10), wherein a first channel (11) and a second channel (12) are arranged in the control body (10);

A first controller (20) connecting the first passage (11) and the overflow passage;

a second controller (30) connecting the second passage (12) and the overflow passage;

the discharging device comprises a discharging body (40), wherein a first discharging valve and a second discharging valve are arranged in the discharging body (40), the first discharging valve is connected with a first channel (11), and the second discharging valve is connected with a second channel (12);

-the first controller (20) and the second controller (30) each have a first state and a second state;

When the first controller (20) is in the first state, the overflow channel is blocked, and the pressure in the first channel (11) acts on the first discharge valve, so that the first discharge valve is closed; when the first controller (20) is in the second state, the overflow channel is communicated with the first channel (11), and the pressure in the first channel (11) is reduced, so that the first discharge valve is opened;

when the second controller (30) is in the first state, the overflow channel is blocked, and the pressure in the second channel (12) acts on the second discharge valve, so that the second discharge valve is closed; when the second controller (30) is in the second state, the overflow channel is communicated with the second channel (12), and the pressure in the second channel (12) is reduced, so that the second discharge valve is opened;

a fifth channel and a sixth channel are also arranged in the discharging body (40);

One end of the fifth channel is communicated with a first material supply device, the other end of the fifth channel is communicated with a first discharge port (43), and the first discharge valve is arranged at the first discharge port (43);

One end of the sixth channel is communicated with a second material supply device, the other end of the sixth channel is communicated with a second discharge port (44), and the second discharge valve is arranged at the second discharge port (44);

when the first controller (20) is in the first state, the first discharge valve is closed, and the first material supplied by the first material supply device is retained in the fifth channel; when the first controller (20) is in the second state, the first discharge valve is opened, and the first material is output through the first discharge port (43);

When the second controller (30) is in the first state, the second discharging valve is closed, and the second material supplied by the second material supply device is retained in the sixth channel; when the second controller (30) is in the second state, the second discharge valve is opened, and the second material is output through the second discharge port (44);

The first controller (20) and/or the second controller (30) comprises a driving part (21), an active part (22) and a passive part (23);

When the first controller (20) or the second controller (30) is in the first state, the driving piece (21) drives the driving piece (22) to press the driven piece (23), so that the driven piece (23) blocks the overflow channel;

when the first controller (20) or the second controller (30) is in the second state, the driving piece (21) drives the driving piece (22) to be far away from the driven piece (23), so that the driven piece (23) releases the blocking of the overflow channel;

The control valve further comprises a valve seat (50), and a first control cavity (51) and a second control cavity (52) are arranged in the valve seat (50);

The first control cavity (51) is communicated with the first channel (11) and the overflow channel, and the second control cavity (52) is communicated with the second channel (12) and the overflow channel;

when the first controller (20) or the second controller (30) is in the first state, the passive component (23) is close to the first control cavity (51) or the second control cavity (52), so that the overflow channel is blocked;

When the first controller (20) or the second controller (30) is in the second state, the passive component (23) is far away from the first control cavity (51) or the second control cavity (52), so that the overflow channel is unblocked.

2. Control valve according to claim 1, characterized in that the tapping body (40) comprises a connection (41) and a mouth (42);

the first discharge hole (43) and the second discharge hole (44) are arranged at the mouth (42);

the fifth channel passes through the connecting part (41) and the mouth part (42) and is connected with the first discharging hole (43);

The sixth passage passes through the connecting part (41) and the mouth part (42) and is connected with the second discharging port (44).

3. Control valve according to claim 2, characterized in that the tapping body (40) further comprises a tightening cap (45), the tightening cap (45) being adapted to lock the connection position of the connection portion (41) with the mouth (42).

4. The control valve according to claim 1, characterized in that the first controller (20) and/or the second controller (30) further comprises an elastic member (24), the elastic member (24) connecting the driving member (21) and the active member (22);

the elastic force of the elastic piece (24) can enable the driving piece (22) to abut against the driven piece (23).

5. The control valve according to claim 4, characterized in that the first controller (20) and/or the second controller (30) further comprises an elastic mounting block (25), the elastic mounting block (25) being arranged on the driver (21);

one end of the elastic piece (24) is connected with the elastic mounting block (25), and the other end of the elastic piece (24) is connected with the driving piece (22).

6. The control valve according to claim 1, characterized in that the first control (20) and/or the second control (30) further comprise a guide (26), the active element (22) being slidably arranged to the guide (26), the guide (26) being able to define the direction of movement of the active element (22).

7. The control valve according to claim 1, characterized in that it further comprises a mounting seat (1), said driving member (21) being provided to said mounting seat (1);

An adjusting washer (2) is arranged between the mounting seat (1) and the valve seat (50), and the distance between the mounting seat (1) and the valve seat (50) can be adjusted by changing the thickness of the adjusting washer (2), so that the movement amplitude of the driven piece (23) is adjusted.

8. A control valve according to any one of claims 1-7, characterized in that the driving member (21) is an electromagnet;

when the electromagnet is electrified, the driving piece (22) receives electromagnetic force so as to be far away from the driven piece (23);

When the electromagnet is not electrified, the driving piece (22) is not subjected to electromagnetic force, so that the driven piece (23) is pressed.

9. A control valve according to any one of claims 1-7, characterized in that the active element (22) is a valve spool and the passive element (23) is a valve ball;

The valve core is close to one side of the valve ball and is provided with a groove, the valve ball is positioned in the groove, and the groove can limit the contact position of the valve ball and the valve core, so that the valve core is ensured to accurately act on the valve ball.

10. Control valve according to claim 1, characterized in that the first channel (11) and the second channel (12) communicate with a pressurizing means, which pressurizing means bring about a pressure in the first channel (11) and the second channel (12), which pressure can act on the first discharge valve and the second discharge valve, such that the first discharge valve and the second discharge valve are closed.

11. An injector comprising a control valve according to any one of claims 1-10.