A mixer for mixing concrete components comprises a chassis and a mixing drum mounted for rotation with respect to the chassis and having an open end. The chassis includes a lifting structure extending beyond the open end of the drum and a support structure spanning the open end of the drum. The mixer is moveable between an inverted orientation in which the open end of the mixing drum faces generally downwards and a mixing orientation in which the open end of the mixing drum faces generally upwards. The lifting structure is arranged to engage with a container with the mixer in the inverted orientation, and to lift and invert the container upon movement of the mixer to the mixing orientation. The support structure is arranged to support the inverted container above the mixing drum when the mixer is in the mixing orientation. Also, a method for producing a concrete mix.

A mixer for mixing concrete components comprises a chassis and a mixing drum mounted for rotation with respect to the chassis and having an open end. The chassis includes a lifting structure extending beyond the open end of the drum and a support structure spanning the open end of the drum. The mixer is moveable between an inverted orientation in which the open end of the mixing drum faces generally downwards and a mixing orientation in which the open end of the mixing drum faces generally upwards. The lifting structure is arranged to engage with a container with the mixer in the inverted orientation, and to lift and invert the container upon movement of the mixer to the mixing orientation. The support structure is arranged to support the inverted container above the mixing drum when the mixer is in the mixing orientation. Also, a method for producing a concrete mix.

A cement premixer includes a treatment container having a treatment space. The treatment container has a side wall and a bottom, and at least one stirring unit at least partially projecting into the treatment space. The stirring unit is connected to a shaft having an axis of rotation. At least one ultrasonic probe projects at least partially into the treatment space. At least one ultrasonic oscillator applies ultrasound to the at least one ultrasonic probe. The cement premixer has at least one first introduction opening for the supply of cement and an outlet for the flow supply line for feeding a cement suspension provided by the cement premixer into a concrete-mixing device.

An all-in-one mobile wellsite service unit for providing equipment and services at an oil and gas well related to well abandonment is provided. The mobile unit comprises a water storage tank, at least one cement mixing barrel for mixing a cement slurry, a progressive cavity pump for pumping the cement slurry, and a hydraulic hose for connecting to a hydraulic power source to provide power to the cement mixing barrel and the progressive cavity pump. The mobile unit may also contain downhole tools needed for well abandonment, including a well cleaning tool, a cementing tool, a hydraulic packer, and more.

A concrete mixing machine for indoor preparation of fluid concrete for disposition as flooring. The concrete mixing machine includes a mixer tank capable of mixing of twenty-three bags of concrete concurrently. Mixing propellers inside of the mixer tank attach to a shaft, whereby a hydraulic propeller drive motor rotationally moves the shaft, and the mixing propellers mix the concrete. The concrete mixing machine produces a large batch of concrete, and the concrete mixing machine moves and deposits the concrete for application using a flow control mechanism with a flow control mixer attached to the mixer tank that regulates concrete flow through a valve and chute and synchronizes with a flow control drive-wheel. The concrete mixing machine is hydraulically operated and self-propelled. The concrete mixing machine does not emit gases harmful to indoor air quality and thus is environmentally friendly.

A concrete mixing machine for indoor preparation of fluid concrete for disposition as flooring. The concrete mixing machine includes a mixer tank capable of mixing of twenty-three bags of concrete concurrently. Mixing propellers inside of the mixer tank attach to a shaft, whereby a hydraulic propeller drive motor rotationally moves the shaft, and the mixing propellers mix the concrete. The concrete mixing machine produces a large batch of concrete, and the concrete mixing machine moves and deposits the concrete for application using a flow control mechanism with a flow control mixer attached to the mixer tank that regulates concrete flow through a valve and chute and synchronizes with a flow control drive-wheel. The concrete mixing machine is hydraulically operated and self-propelled. The concrete mixing machine does not emit gases harmful to indoor air quality and thus is environmentally friendly.

A device for producing a concrete includes a cement premixer for mixing a cement suspension, the cement premixer having an ultrasonic probe for preparing a cement suspension, a crystallization tank arrangement with the first crystallization tank, for increasing the early strengths of the concrete, and a concrete mixer for producing a concrete mixture from the premixed cement suspension, in particular with the addition of aggregates.

A device for producing a concrete includes a cement premixer for mixing a cement suspension, the cement premixer having an ultrasonic probe for preparing a cement suspension, a crystallization tank arrangement with the first crystallization tank, for increasing the early strengths of the concrete, and a concrete mixer for producing a concrete mixture from the premixed cement suspension, in particular with the addition of aggregates.

An all-in-one mobile wellsite service unit for providing equipment and services at an oil and gas well related to well abandonment is provided. The mobile unit comprises a water storage tank, at least one cement mixing barrel for mixing a cement slurry, a progressive cavity pump for pumping the cement slurry, and a hydraulic hose for connecting to a hydraulic power source to provide power to the cement mixing barrel and the progressive cavity pump. The mobile unit may also contain downhole tools needed for well abandonment, including a well cleaning tool, a cementing tool, a hydraulic packer, and more.

The present invention relates to a descending type ceramic 3D printer comprising a rack, the middle part of the rack is provided with a charging block sealed with the four sides thereof, the lower part of the charging block is connected with a lifting device for printing, the lifting device for printing is mounted on the lifting mounting block arranged at the lower part of the rack, the upper left side of the rack is provided with a scraping device cooperating with the material in the charging block, the upper right side thereof is provided with a mounting rack, the mounting rack is provided with a light spot emission device and a light transmission block that cooperate with each other, and the mounting rack is further provided with a discharging device; the present invention aims to provide a descending type ceramic 3D printer in which the light transmission block and the light spot emission device are arranged above the charging block so that the charging block are descended gradually to realize the printing of the product, and when printing and feeding of each part finishes, the scraping device will scratch it flat, greatly guarantying the flatness of each printing, and ensuring the performance of the joint portions, thereby improving the quality of the product.