CN214533304U

CN214533304U - Step motor driven engine electric control EGR valve

Info

Publication number: CN214533304U
Application number: CN202120447316.0U
Authority: CN
Inventors: 上官福程
Original assignee: Wenzhou Shengguang Electromechanical Co ltd
Current assignee: Wenzhou Shengguang Electromechanical Co ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-10-29
Anticipated expiration: 2031-03-02

Abstract

The utility model discloses an automatically controlled EGR valve of step motor driven engine in EGR valve field, including the shell body, install the baffle in the shell body, seted up two first ventholes and two second ventholes on the baffle, the below of baffle is installed the division board in the shell body, and the below of division board is installed flow switching device in the shell body, and flow switching device includes: step motor, first bevel gear, second bevel gear, the transmission shaft, the adapter rod, carousel and wire, install first bevel gear on step motor's the output shaft, normal running fit's second bevel gear is installed to first bevel gear's upside, second bevel gear installs on the transmission shaft, a carousel is all installed to the top left and right sides of transmission shaft, the bottom laminating mutually of carousel and baffle, the carousel passes through the adapter rod and links to each other with the transmission shaft, a plurality of damping device are installed on the right side of shell body. The utility model discloses it is convenient to gas flow control, has shock-absorbing function.

Description

Step motor driven engine electric control EGR valve

Technical Field

The utility model relates to a EGR valve field specifically is an automatically controlled EGR valve of step motor driven engine.

Background

The EGR valve is an electromechanical integrated product mounted on a diesel engine for controlling the amount of exhaust gas recirculation fed back to the intake system. It is usually located on the right side of the intake manifold, near the throttle body, and a short metal tube leading to the exhaust manifold is connected to it. The function of the exhaust gas recirculation system is to control the amount of exhaust gas entering the intake manifold so that a certain amount of exhaust gas flows into the intake manifold for recirculation. EGR valves are a very important, critical component in exhaust gas recirculation devices.

The existing EGR valve is troublesome in controlling gas flow, does not have a damping function, and can influence the operation of the existing EGR valve when external vibration is strong, so that the development of the engine electric control EGR valve driven by the stepping motor and convenient for controlling the gas flow and having the damping function is urgently needed to overcome the defects in the current practical application and meet the current requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatically controlled EGR valve of step motor driven engine to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an automatically controlled EGR valve of step motor driven engine, includes the shell body, the ring flange that is linked together with it is installed on the right side of shell body, install the baffle in the shell body, two first ventholes and two second ventholes have been seted up on the baffle, and two first ventholes and two second venthole equipartitions are on the baffle, first venthole and second venthole staggered arrangement, install the division board in the shell body the below of baffle, install flow switching device in the shell body the below of division board, flow switching device includes: step motor, first bevel gear, second bevel gear, transmission shaft, changeover lever, carousel and wire, install first bevel gear on step motor's the output shaft, the second bevel gear of normal running fit with it is installed to first bevel gear's upside, second bevel gear installs on the transmission shaft, a carousel is all installed to the top left and right sides of transmission shaft, the carousel laminates with the bottom of baffle mutually, the carousel passes through the changeover lever and links to each other with the transmission shaft, step motor is last to install the wire that extends to the shell body outside, a plurality of damping device are installed on the right side of shell body.

As a further aspect of the present invention: the diameter of the first air outlet hole is larger than that of the second air outlet hole.

As a further aspect of the present invention: the diameter ratio of the first bevel gear to the second bevel gear is 1: 1.

as a further aspect of the present invention: the stepper motor rotates 90 ° each time.

As a further aspect of the present invention: the shock-absorbing device includes: sliding sleeve, conduction pole, spring and friction pulley, the sliding sleeve is installed on the right side of shell body, install in the sliding sleeve and extend to its outside conduction pole, the left end of conduction pole passes through spring and sliding sleeve elastic connection, a plurality of friction pulleys are installed to the upper and lower both sides of conduction pole on the inner wall of sliding sleeve, the friction pulley laminates with the conduction pole mutually.

As a further aspect of the present invention: the diameter of the rotary disc is larger than that of the first air outlet hole.

Compared with the prior art, the beneficial effects of the utility model are that: when the engine electric control EGR valve driven by the stepping motor is used, the whole device is connected with an engine through a flange plate, the stepping motor drives a first bevel gear to rotate, the first bevel gear rotates to drive a second bevel gear to rotate, the second bevel gear rotates to drive a transmission shaft to rotate, the transmission shaft rotates to drive a turntable to rotate, a second air outlet is communicated when the turntable is positioned at the lower side of the first air outlet, and the first air outlet is communicated when the turntable is positioned at the lower side of the second air outlet, so that the flow of gas can be adjusted; after whole device is connected with the engine, can produce vibrations when the engine work, through the absorption vibrations of conduction pole, through the removal of conduction pole with the friction pulley looks friction turn into the frictional force with the shaking force and consume, be favorable to reducing the influence of vibrations to whole device. To sum up, the utility model discloses it is convenient to gas flow control, has shock-absorbing function, and stability is good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a view from a-a direction in the structural schematic diagram of the present invention.

Fig. 3 is a schematic view illustrating a state in which the flow switching mechanism of fig. 2 of the present invention rotates by 90 °.

Fig. 4 is a partial view of the position B in the schematic structural diagram of the present invention.

In the figure: 1-outer shell, 101-air outlet, 2-flange plate, 201-air inlet, 3-baffle, 301-first air outlet, 302-second air outlet, 4-separation plate, 5-flow switching device, 501-stepping motor, 502-first bevel gear, 503-second bevel gear, 504-transmission shaft, 505-adapter rod, 506-rotary disc, 507-lead, 6-damping device, 601-sliding sleeve, 602-conducting rod, 603-spring, 604-friction wheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 to 4, in the embodiment of the present invention, an electrically controlled EGR valve for an engine driven by a stepping motor includes an outer housing 1, an air outlet 101 is disposed at the top of the outer housing 1, a flange 2 is mounted on the right side of the outer housing 1 and is in communication with the outer housing 1, an air inlet 201 is disposed in the flange 2, the outer housing 1 is connected to the engine through the flange 2, a baffle 3 is mounted in the outer housing 1, two first air outlets 301 and two second air outlets 302 are disposed on the baffle 3, the two first air outlets 301 and the two second air outlets 302 are uniformly distributed on the baffle 3, the first air outlets 301 and the second air outlets 302 are arranged in a staggered manner, the diameter of the first air outlet 301 is larger than that of the second air outlets 302, a partition plate 4 is mounted in the outer housing 1 below the baffle 3, and a flow switching device 5 is mounted in the outer housing 1 below the partition plate 4, the flow rate switching device 5 includes: the stepping motor 501 is connected with the outer shell 1 through screws, the stepping motor 501 rotates 90 degrees every time, the rotating angle and the rotating period of the stepping motor 501 can be controlled through pulse signals, the first bevel gear 502 is mounted on an output shaft of the stepping motor 501, the second bevel gear 503 in rotating fit with the first bevel gear 502 is mounted on the upper side of the first bevel gear 502, and the diameter ratio of the first bevel gear 502 to the second bevel gear 503 is 1: 1, second bevel gear 503 installs on transmission shaft 504, transmission shaft 504's bottom is passed through the bearing and is connected with shell body 1 rotation, a carousel 506 is all installed to the top left and right sides of transmission shaft 504, the bottom laminating of carousel 506 and baffle 3, carousel 506 links to each other with transmission shaft 504 through adapter rod 505, install on the step motor 501 and extend to the outside wire 507 of shell body 1, a plurality of damping device 6 are installed on shell body 1's right side, damping device 6 includes: sliding sleeve 601, conduction pole 602, spring 603 and friction pulley 604, sliding sleeve 601 installs in the right side of shell body, install in the sliding sleeve 601 and extend to its outside conduction pole 602, the left end of conduction pole 602 passes through spring 603 and sliding sleeve 601 elastic connection, a plurality of friction pulleys 604 are installed on the inner wall of sliding sleeve 601 to the upper and lower both sides of conduction pole 602, friction pulley 604 laminates with conduction pole 602 mutually. When the device is used, the whole device is connected with an engine through the flange plate 2, the first bevel gear 502 is driven to rotate through the stepping motor 501, the second bevel gear 503 is driven to rotate through the rotation of the first bevel gear 502, the transmission shaft 504 is driven to rotate through the rotation of the second bevel gear 503, the rotating disc 506 is driven to rotate through the rotation of the transmission shaft 504, the second air outlet hole 302 is ventilated when the rotating disc 506 is positioned at the lower side of the first air outlet hole 301, and the first air outlet hole 301 is ventilated when the rotating disc 506 is positioned at the lower side of the second air outlet hole 302, so that the flow of gas can be adjusted; when the whole device is connected with an engine, the engine generates vibration when working, the vibration is absorbed through the conducting rod 602, and the vibration force is converted into friction force to be consumed through the friction between the conducting rod 602 and the friction wheel 604 when moving, so that the influence of the vibration on the whole device is favorably reduced.

Example 2

Referring to fig. 1 to 3, in the embodiment of the present invention, the diameter of the rotating disc 506 is larger than the diameter of the first air outlet 301.

The utility model discloses a theory of operation is: when the engine electric control EGR valve driven by the stepping motor is used, the whole device is connected with an engine through the flange plate 2, the first bevel gear 502 is driven to rotate through the stepping motor 501, the second bevel gear 503 is driven to rotate through the rotation of the first bevel gear 502, the transmission shaft 504 is driven to rotate through the rotation of the second bevel gear 503, the rotating disc 506 is driven to rotate through the rotation of the transmission shaft 504, the second air outlet hole 302 is ventilated when the rotating disc 506 is positioned at the lower side of the first air outlet hole 301, and the first air outlet hole 301 is ventilated when the rotating disc 506 is positioned at the lower side of the second air outlet hole 302, so that the flow of gas can be adjusted; when the whole device is connected with an engine, the engine generates vibration when working, the vibration is absorbed through the conducting rod 602, and the vibration force is converted into friction force to be consumed through the friction between the conducting rod 602 and the friction wheel 604 when moving, so that the influence of the vibration on the whole device is favorably reduced.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An automatically controlled EGR valve of step motor driven engine, includes shell body (1), its characterized in that: the right side of shell body (1) installs ring flange (2) that is linked together with it, install baffle (3) in shell body (1), two first ventholes (301) and two second ventholes (302) have been seted up on baffle (3), two first ventholes (301) and two second venthole (302) equipartitions are on baffle (3), first venthole (301) and second venthole (302) staggered arrangement, install division board (4) in shell body (1) below of baffle (3), install flow switching device (5) in shell body (1) below of division board (4), flow switching device (5) include: a stepping motor (501), a first bevel gear (502), a second bevel gear (503), a transmission shaft (504), an adapter rod (505), a turntable (506) and a lead (507), a first bevel gear (502) is arranged on an output shaft of the stepping motor (501), a second bevel gear (503) which is in running fit with the first bevel gear (502) is arranged on the upper side of the first bevel gear (502), the second bevel gear (503) is arranged on the transmission shaft (504), the left side and the right side of the top of the transmission shaft (504) are respectively provided with a turntable (506), the rotary disc (506) is attached to the bottom of the baffle (3), the rotary disc (506) is connected with the transmission shaft (504) through the adapter rod (505), a lead (507) extending to the outside of the outer shell (1) is arranged on the stepping motor (501), a plurality of damping devices (6) are installed on the right side of the outer shell (1).

2. The electronically controlled stepper-motor driven engine EGR valve of claim 1, wherein: the diameter of the first air outlet hole (301) is larger than that of the second air outlet hole (302).

3. The electronically controlled stepper-motor driven engine EGR valve of claim 1, wherein: the diameter ratio of the first bevel gear (502) to the second bevel gear (503) is 1: 1.

4. the electronically controlled stepper-motor driven engine EGR valve of claim 1, wherein: the stepping motor (501) rotates 90 degrees each time.

5. The electronically controlled stepper-motor driven engine EGR valve of claim 1, wherein: the shock-absorbing device (6) comprises: sliding sleeve (601), conduction pole (602), spring (603) and friction pulley (604), the right side in the shell body is installed in sliding sleeve (601), install in sliding sleeve (601) and extend to its outside conduction pole (602), the left end of conduction pole (602) passes through spring (603) and sliding sleeve (601) elastic connection, a plurality of friction pulley (604) are installed on the inner wall of sliding sleeve (601) to the upper and lower both sides of conduction pole (602), friction pulley (604) are laminated with conduction pole (602) mutually.

6. The stepper-motor driven engine electronically controlled EGR valve of any of claims 1-5, wherein: the diameter of the rotary disc (506) is larger than that of the first air outlet hole (301).