Today, I will introduce a national invention authorized patent - two-way anti-blocking mechanism, two-way anti-blocking electromechanical ball valve and gas meter. The patent was applied for by Chengdu Qinchuan Internet of Things Technology Co., Ltd., and the authorization announcement was obtained on November 6, 2018.
Content descriptionThe invention relates to the field of gas meters, in particular to a two-way anti-blocking mechanism, a two-way anti-blocking electromechanical ball valve, and a gas meter using the two-way anti-blocking electromechanical ball valve.
Background of the InventionIC card gas meters are widely used. In the process of gas consumption, the microcomputer in the IC card smart meter automatically reduces the remaining gas volume. When the purchased gas volume is used up, the valve will automatically shut off the gas. The user needs to purchase gas again before the IC can be used again. Open the valve of the card gas meter to supply gas.
At present, most of the special electromechanical valves for IC card gas meters have problems such as excessive current and high energy consumption due to the lack of two-way anti-blocking function after the valve core is rotated in place, and the electromechanical valve structure of this structure is complicated. , easy to wear.
Therefore, the development of a two-way anti-blocking mechanism with a simple structure and a long service life is a technical problem that needs to be urgently solved at present.
SUMMARY OF THE INVENTIONThe purpose of the present invention is to provide a two-way anti-blocking mechanism, which can realize the function of two-way anti-blocking, and has a simple structure and is resistant to wear.
Another object of the present invention is to provide a two-way anti-blocking electromechanical ball valve, which adopts the two-way anti-blocking mechanism, can realize the function of two-way anti-blocking, and is resistant to wear.
Another object of the present invention is to provide a gas meter. The gas meter adopts the two-way anti-blocking electromechanical ball valve, which can realize the two-way anti-blocking function and has a long service life.
The present invention solves its technical problems by adopting the following technical solutions: a two-way anti-blocking electromechanical ball valve includes a power gear, a transmission gear, an anti-blocking gear and an anti-blocking magnetic device. The transmission gear is arranged between the power gear and the anti-blocking gear. The power gear meshes with the transmission gear. The anti-blocking gear includes a first tooth portion and a first transition portion that are integrally arranged. A plurality of tooth shapes are evenly arranged on the outer peripheral surface of the first tooth portion. One end of the first tooth portion is provided with a first end tooth, and the other end is provided with a second end tooth. The outer peripheral surface of the first transition portion is an arc surface without tooth shape, and the opposite ends of the outer peripheral surface of the first transition portion are respectively connected with the tooth root of the first end tooth and the second end tooth. tooth root connection. The first tooth portion can be engaged with the transmission gear, and the first transition portion can be disengaged from the transmission gear. When the first transition part is disengaged from the transmission gear, the anti-locking magnetic device can make the first tooth part mesh with the transmission gear.
Further, the two-way anti-blocking mechanism further includes a fixing plate, and both the power gear and the anti-blocking gear are connected to the fixing plate. The anti-locking magnetic device includes a fixed magnetic piece, a first moving magnetic piece and a second moving magnetic piece. The first moving magnetic member and the second moving magnetic member are respectively disposed on the first tooth portion. When the transmission gear rotates until it is released from the first end tooth and disengages from the first transition portion, the first moving magnetic piece and the fixed magnetic piece are attracted to each other, and the first end tooth is connected to the first end tooth. The transmission gears are meshed. When the transmission gear rotates until the second end tooth is released and disengaged from the first transition portion, the second moving magnetic piece and the fixed magnetic piece are attracted to each other, and the second end tooth and the The transmission gears are engaged.
The anti-blocking gear includes a first rotating shaft, the power gear includes a tooth portion and a second rotating shaft, the anti-blocking gear and the fixing plate are connected through the first rotating shaft, and the tooth portion is connected to the fixing plate. The plates are connected by the second shaft. The centers of the orthographic projections of the fixed magnetic element, the first rotating shaft and the second rotating shaft on the fixed plate are respectively located on the same straight line.
The distance from the fixed magnetic member to the first rotating shaft is equal to the distance from the first moving magnetic member to the first rotating shaft. The distance from the second moving magnetic member to the first rotating shaft is equal to the distance from the first moving magnetic member to the first rotating shaft. Further, the first moving magnetic member and the first end teeth are located on the same radial direction of the anti-blocking gear. The second moving magnetic member and the second end teeth are located on the same radial direction of the anti-blocking gear.
The two-way anti-blocking mechanism further includes a first transmission tooth and a second transmission tooth, the first transmission tooth is coaxially connected with the second transmission tooth, and the first transmission tooth meshes with the power gear, so the The second transmission teeth can be engaged with the first tooth portion, and the second transmission teeth can be disengaged from the first transition portion.
The present invention also provides a two-way anti-blocking electromechanical ball valve, comprising a valve body, a valve core, a first actuator, a transmission mechanism and the above-mentioned two-way anti-blocking mechanism. The valve body is provided with an air inlet. The valve core is arranged in the valve body, and the first actuator passes through the valve body and is connected with the valve core. The transmission mechanism is engaged with the first actuator, and the transmission mechanism is engaged with the first tooth portion. The two-way anti-blocking mechanism can drive the valve core to rotate through the transmission mechanism and the first actuator to open or close the air inlet.
The two-way anti-blocking electromechanical ball valve further includes a sealing ring and a second actuator. The sealing ring is installed at the air inlet, the second actuator is engaged with the transmission mechanism, the second actuator passes through the valve body and is connected with the valve core. The two-way anti-blocking mechanism can drive the valve core to squeeze the sealing ring through the transmission mechanism and the actuator.
The first actuator includes a first actuator gear and a first connection part connected in sequence, and the second actuator includes a second actuator gear and a second connection part connected in sequence. The first actuator gear and the first connection portion are sleeved on the second connection portion, and the first actuator can rotate relative to the second actuator. The first connection part and the second connection part are respectively connected with the valve core. The transmission mechanism includes a first gear, a second gear and a third gear that are coaxially connected. The first gear meshes with the second actuator gear. The second gear includes a second tooth portion and a second transition portion integrally arranged, the second tooth portion can be engaged with the first actuator gear, and the second transition portion can be disengaged from the first actuator . The third gear meshes with the first tooth portion. The present invention also provides a gas meter, which includes the above-mentioned two-way anti-blocking electromechanical ball valve.
The beneficial effect of the embodiment of the present invention is that the bidirectional anti-blocking mechanism includes a power gear, an anti-blocking gear and an anti-blocking magnetic device. The power gear meshes with the transmission gear. The anti-blocking gear includes a first tooth portion and a first transition portion that are integrally arranged. The first tooth portion can be engaged with the transmission gear, and the first transition portion can be disengaged from the transmission gear. When the first transition part is disengaged from the transmission gear, the anti-blocking magnetic device can make the first tooth part mesh with the transmission gear, so as to realize the two-way anti-blocking function, and the structure is simple and wear-resistant.
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