摘要:
An apparatus for dispensing an additive (70) into a stream (14) of well proppant includes a sealed housing (42), (44), (52) containing a first chamber (102), a second chamber (104), and an additive dispenser (64), (72) operably connected to a motor (92). The upper chamber (102) is adapted to contain the additive (70), and the lower chamber (104) communicated with the pressurized well proppant stream (14). The additive dispensing means (64), (72) is disposed between the upper chamber (102) and the lower chamber (104). Pressure equalizing tubes (98 and 99) within said housing (42), (44), (52) extend from the upper chamber (102) through the additive dispenser (64), (72) to the lower chamber (104) to equalize the fluid pressure existing in the lower chamber (104) with the fluid pressure existing in the upper chamber (102) during the dispensing of the additive ( 70) from the upper chamber (102) to the lower chamber (104). In the preferred embodiment the additive dispenser (64), (72) consists of a screw or auger (72) disposed within an auger ring (64), and the additive (70) flows through the additive dispenser (64), (72) to the lower chamber (104) under the force of gravity. Where the additive (70) consists of radioactive sand used as a tracer for well logging purposes, the apparatus may be provided with an electrical power end control circuit (106) to remotely control the dispensing of radioactive sand (70).
摘要:
The present invention relates to a condiment measuring system which is compact, easy to store, and easy to manufacture. The device attaches to standard condiment containers and permits precise and easy measurement of predetermined quantities of condiment with no danger of over dispensing or spilling. In addition, measured quantities of condiment may be measured and stored for later dispensing while still being protected from environmental degradation. The device comprises a housing 10, a metering drum 20, drum retaining disk 30, selector disk 40, and plug 52. The central shaft 11 passes through housing 10 and drum 20 to dispense condiments without measuring, when plug 52 is removed. The device can be built to close tolerances for durability, effective sealing, and ease and smoothness of operation.
摘要:
The dispenser features a container in which a rotary valve operates to dispense quantities of material periodically. The valve rotates on a horizontal axis above the bottom of the dispenser container so that it is at least partly immersed in the material and, during rotation, scoops up material and retains it in one or more pockets until at a preselected angular position of the valve, an opening therein registers with an opening in the front wall of the container to discharge material. The valve has generally the shape of a truncated section of a cone and the sloping walls of the truncated-conical rim cooperate with radial walls to define one or more pockets or cavities for containing material prior to discharge.
摘要:
A device for metering bulk materials with a vertical axis having a rotor featuring radially extending paddles about the vertical axis, and a cover plate, constructed to prevent especially coarse particle materials from being scraped or squashed between the rotor and the cover plate. For this purpose a ring segment type opening is provided in the cover plate, and a recess is provided in the under surface of the cover adjacent the opening to provide a space for producing material slopes underneath, whereby the limiting edge between the inlet opening of the cover plate and the rotor paddles forms an acute angle.
摘要:
An apparatus for dispensing an additive (70) into a stream (14) of well proppant includes a sealed housing (42), (44), (52) containing a first chamber (102), a second chamber (104), and an additive dispenser (64), (72) operably connected to a motor (92). The upper chamber (102) is adapted to contain the additive (70), and the lower chamber (104) communicated with the pressurized well proppant stream (14). The additive dispensing means (64), (72) is disposed between the upper chamber (102) and the lower chamber (104). A pressure equalizing tube (98) within said housing (42), (44), (52) extends from the upper chamber (102) through the additive dispenser (64), (72) to the lower chamber (104) to equalize the fluid pressure existing in the lower chamber (104) with the fluid pressure existing in the upper chamber (102) during the dispensing of the additive (70) from the upper chamber (102) to the lower chamber (104). In the preferred embodiment the additive dispenser (64), (72) consists of a screw or auger (72) disposed within an auger ring (64), and the additive (70) flows through the additive dispenser (64), (72) to the lower chamber (104) under the force of gravity. Where the additive (70) consists of radioactive sand used as a tracer for well logging purposes, the apparatus may be provided with an electrical power end control circuit (106) to remotely control the dispensing of radioactive sand (70).
摘要:
An apparatus for dispensing particulate material in a predetermined pattern over a subjacent surface. The apparatus includes an elongated hopper having a downwardly facing discharge mouth. A rotary dispensing shaft extends the length of the mouth. The shaft has a plurality of material receiving grooves formed to extend longitudinally thereof and sized to receive predetermined amounts of particulate material. Positioned about the shaft member and extending the length thereof is an elongated cylindrical sleeve which is mounted for selective rotation relative to the shaft with its exterior surface in sealing engagement with the mouth of the hopper. First and second circumferentially spaced, generally longitudinally extending openings are formed through the sleeve. The openings are located such that in a first position of the sleeve the first openings provide communication from the mouth to the material receiving grooves in the shaft and the second openings provide communication from the shaft to the exterior of the sleeve. In the second position of the sleeve the mouth is sealed from the shaft.
摘要:
Apparatus is disclosed for dispensing materials into containers in precise amounts, which includes an adjustment mechanism for precisely controlling the volume of material dispensed. The dispensing apparatus comprises a dispensing wheel having a plurality of dispensing chambers arranged in a radial manner on the wheel. Each chamber includes a mechanism for varying its volume and hence the quantity of the substance received and discharged. The adjustment mechanism includes an externally accessible toothed wheel which is rotatable in one direction to increase the volume of the chamber and is rotatable in the opposite direction to decrease the chamber volume. First and second actuators are disposed relative to the dispensing wheel and are selectively operated to engage the toothed wheel on opposite sides of its rotational axis. This engagement takes place while the dispensing wheel is revolving, and engagement of either of the actuator means causes the toothed adjustment wheel to rotate in the selected direction to increase or decrease the chamber volume. In an alternative embodiment, the externally accessible adjustment wheel is a gear member, and the actuator means comprises a gear member connected to a reversible motor that is employed while the dispensing wheel is at rest. With either embodiment, the volume of each chamber can be precisely controlled quickly and automatically.
摘要:
A device for introducing dosed or proportioned quantities of pulverized solid materials into a carrier gas stream is presented. The device comprises a housing which defines a flow chamber in the axial direction for the flow of pressurized fluid or carrier gas. The housing also has a side aperture therethrough. The side aperture is connected to a container holding pulverized materials. Coaxial inner and outer sleeves, at least one of which is capable of rotation, are located within the housing. The outer sleeve communicates with the aperture while the inner sleeve has an axial bore which provides a passage for the carrier gas. Upon rotation of a sleeve, slots provided on each sleeve will align and overlap with each other and with the aperture to define a variable sized passage between the container and axial bore whereby the pulverized material is delivered therethrough to the carrier gas stream. A third sleeve which is coaxial with the inner and outer sleeves and rotatable about its longitudinal axis is located between the housing and the outer sleeve. This third sleeve has a radial aperture corresponding to the side aperture of the housing. The third sleeve acts as a valve between the dosing device and a distribution tank.
摘要:
A method and apparatus for combining granular components. The granular material, in finely divided form, is moved from spaced-apart locations into flight paths or trajectories which overlap or cross one another. The mixing of the components first takes place in the crossover zone of the trajectories. The material is thus continuously and uniformly mixed in a simple manner. The apparatus for carrying out the method includes two drums which are rotated in opposite directions. Receivers for the components are distributed on the surfaces of the drums. An extraction device is located between the drums for removing the granular material from the receivers as the drums rotate. In the region below the extraction device, there is disposed a mixing zone in which the trajectories of the material cross one another.
摘要:
A device for continuous, gravimetric metering and pneumatic conveying of pourable material provides that a material stream is conveyed over a measuring path while charging a load measuring device and the product of moment load and conveying speed is formed. The conveyor is in the form of a rotor having an essentially vertical axis and conveyor pockets in the form of chambers or cells which are moved with the rotor in a circular orbit over the measuring path. A housing surrounds the rotor in a pressure tight manner and includes a charging aperture and an emptying aperture which are rotationally displaced from one another. A load measuring device is connected to the housing and a tachometer is provided for measuring the angular velocity of the rotor. A pneumatic conveying system is provided which has feed lines respectively communicating with an air feed aperture in the housing and the emptying aperture.