7results about How to "Elongated length" patented technology

The invention relates to a water conservancy construction cofferdam device, and belongs to the technical field of cofferdam facilities. Comprising an upper support, a lower support, an enclosing plate arranged between the upper support and the lower support and a supporting frame arranged on the inner side of the enclosing plate, the upper support, the lower support and the enclosing plate are all annular, an upper inserting groove matched with the enclosing plate is formed in the bottom face of the upper support, and a lower inserting groove matched with the enclosing plate is formed in the bottom face of the lower support. A lower inserting groove matched with the enclosing plate is formed in the top face of the lower support, and a water stop ring used for being inserted into a riverbed is fixedly connected to the bottom face of the lower support; the supporting frame comprises a plurality of fixing pieces arranged on the inner side wall of the upper support and supporting pieces connected between every two adjacent fixing pieces in a one-to-one correspondence mode. According to the water conservancy cofferdam, the problem that in the prior art, an internal support of the water conservancy cofferdam occupies a large space, and consequently construction is inconvenient is solved.

The invention relates to an energy recovery sneaker, and relates to the technical field of sneakers, the energy recovery sneaker comprises an outer-layer sneaker body, an inner-layer sneaker body and an energy recovery system, the outer-layer sneaker body is internally provided with an upper arc surface, the bottom of the inner-layer sneaker body is provided with a lower arc surface matched with the upper arc surface, the upper arc surface and the lower arc surface slide relative to each other, and the energy recovery system is connected with the inner-layer sneaker body. The geometric center line of the upper arc surface coincides with the geometric center line of the lower arc surface, the energy recovery system penetrates through the lower arc surface to be installed on the upper arc surface, the energy recovery system is elastic, the energy recovery system is detachably installed at the bottom of the outer layer shoe body, the rebound resilience of the sports shoe is enhanced, and the sports shoe is more comfortable to wear. And the energy recovery capability of the sports shoes is enhanced.

The utility model discloses a kind of sealing structure for water heater shell, it is related to water heater and its accessory technical field.The utility model includes sealing shell;Sealing shell is inserted with sealing cover in outer end, and sealing cover is installed with sealing assembly on the side, sealing shell, sealing assembly includes threaded column one on the side wall of sealing shell end portion, the end portion of threaded column one is rotatably connected with connecting plate, sealing cover is embedded with sealing sleeve in upper side wall, sealing cover is connected with water pipe by sealing sleeve, water pipe includes water pipe one fixed in sealing sleeve, and water pipe two is inserted in the end of water pipe one, the side of water pipe is provided with adjusting assembly, and positioning plate one and positioning plate two are connected by threaded column two.The utility model can improve the sealing effect between sealing cover and the sealing shell of water heater by sealing assembly, and the overall length of water pipe can be adjusted by adjusting assembly, so that it is better adapted to different length of connecting hose.

The present application discloses a ventilator air duct assembly and a portable ventilator, the air duct assembly comprises an air duct main body and a blower, the air duct main body is provided with a low-pressure chamber and a high-pressure chamber, as well as an air inlet and an air outlet, the blower is connected with the low-pressure chamber and the high-pressure chamber; the low-pressure chamber comprises a first low-pressure chamber, a second low-pressure chamber and a third low-pressure chamber which are connected in sequence, the first low-pressure chamber is connected with the air inlet, and the third low-pressure chamber is connected with the blower; the air duct main body is provided with a first partition plate which isolates the first low-pressure chamber and the second low-pressure chamber, and a second partition plate which isolates the second low-pressure chamber and the third low-pressure chamber, the first partition plate is provided with a first ventilation hole group, and the second partition plate is provided with a second ventilation hole group; the present application greatly lengthens the air path length within the extremely limited space of the air duct main body, and the air path is tortuous, lengthens the path for sound transmission, increases the difficulty of sound transmission, and the sound will be significantly reduced or eliminated when making a large-angle turn, having a good noise reduction and silencing effect.

The utility model provides a sliding door and window guide wheel assembly which comprises a movable strip and a guide wheel mechanism located on the top of the movable strip. At least one transmission opening is formed in the movable strip, and a lateral moving structure sliding in the transmission opening is arranged at the bottom of the guide wheel mechanism. The lateral moving structure comprises a guide shaft, the guide shaft is rotationally sleeved with a guide sleeve, and the guide sleeve is arranged in the transmission opening in a matched mode and rolls along the inner side of the transmission opening. According to the sliding door and window guide wheel assembly, the first extension opening and the second extension opening in the transmission opening are formed in the positions, close to the end and the middle of the movable strip, of the end and the middle of the movable strip correspondingly and connected through the wedge-shaped opening, so that the length of the wedge-shaped opening is increased, the inclination angle of the wedge-shaped opening is reduced, movement of a side moving structure in the transmission opening is facilitated, and abrasion can be reduced; in addition, the lateral movement structure takes the guide shaft as a guide basis, and a guide sleeve is arranged outside the guide shaft as a movement medium, so that movement abrasion is reduced, and movement smoothness is improved.

The application discloses a method for reducing gaseous suspended calcination nitrogen oxide, and solves the problem of high cost of external equipment for reducing nitrogen oxide emission of a calcination furnace at present.The method comprises the following steps: S1, arranging a lance in a combustion station; and S2, lengthening a flame and dispersing a flame intersection.Compared with the prior art, the application has the following benefits: 1) under the existing working condition and equipment condition, the method of lengthening the flame and dispersing the intersection is adopted in operation, the external flame intersection is avoided, the high-temperature interval is controlled within 950 DEG C, and the formation of NOx can be effectively reduced; 2) the number of the lances can be reduced, and the lengthening of the flame length and the avoidance of the external flame intersection point can be realized; and 3) the wind speed can be increased, and the lengthening of the flame length and the reduction of the intersection point temperature can be realized.