34results about How to "Speed can be adjusted" patented technology

The invention discloses a lifting stand column device. The lifting stand column device comprises an outer cylinder, an inner cylinder, a drag chain and a position feedback device, a first containing cavity is formed in the outer cylinder, an opening is formed in one end of the outer cylinder in the axis direction, the opening communicates with the first containing cavity, and the inner cylinder and the drag chain are located in the first containing cavity separately. The inner cylinder and the outer cylinder are the same in axial direction, the inner cylinder can be driven to move in the outer cylinder in the axis direction of the outer cylinder, one end of the drag chain is connected with the outer cylinder, the other end of the drag chain is connected with the inner cylinder, and the position feedback device is configured to feed back the position of the inner cylinder in the outer cylinder. According to the lifting stand column device, work is stable, the number of wires capable of being arranged in the lifting stand column device is large, the lifting speed is high and adjustable, the unbalance loading capacity is large, the lifting position can be accurately positioned, and by additionally arranging a spring gap eliminating device, a transmission gap generated when a trapezoidal lead screw rotates forwards and backwards can be effectively eliminated.

The invention discloses a powder rolling feeding device, and belongs to the field of chemical power supplies. The powder rolling feeding device comprises a feed hopper; the feed hopper is positioned rightly above two pressure rollers of a rolling machine; a position for feeding powder between the two pressure rollers is a rolling port; the feed hopper is of a funnel structure for feeding the powder in the rolling port; the feed hopper consists of four baffle plates; impeller shafts parallel to pressure roller shafts are respectively arranged on the left and right sides of the rolling port; two ends of each impeller shaft are connected with two baffle plates perpendicular to the pressing roller shafts; two impeller shafts are connected with a rotary driving mechanism, and are driven by the rotary driving mechanism to oppositely rotate; each impeller shaft and the pressure roller in the same side are oppositely rotated; and the impeller shafts and the pressure rollers therebelow are provided with gaps at least capable of enabling silver pull nets to pass through. The powder rolling feeding device has such characteristics as uniform powder feeding speed, adjustable feeding quantity, capability of preleveling the silver pull nets, capability of adjusting the lengths of the silver pull nets and possession of an automatic powder leakage preventing function.

The invention relates to a dual power drive superimposed output power device, which is mainly used for comprehensive utilization of power equipment and belongs to the field of cooling towers. The invention includes a motor, a motor output transmission shaft, a power output device, a power output transmission shaft, a dual power input gearbox, a transmission shaft, a controller circuit device and at least one clutch, and the output shaft of the motor is connected to the dual power input through the motor output transmission shaft. The first input shaft of the gearbox is connected, and the output shaft of the power output device is connected to the second input shaft of the dual power input gearbox through the power output transmission shaft. There are two clutches, the two clutches include the motor output clutch and the power output clutch, and the motor output The clutch is located at one side of the motor, the power output clutch is located at one side of the power output device, and the controller circuit device is connected with the motor. The invention has the advantages of simple and reasonable structural design, convenient installation, convenient maintenance, high efficiency and energy saving, and can also be used for energy-saving comprehensive utilization of power equipment.

The invention discloses a device for preparing heavy magnesium carbonate from heavy magnesium water and a preparation method, relating to the field of inorganic salt synthesis. The device comprises aheating pipe, a settling tank, a reaction tank, a discharging auger, a stirring tank, a sampling hole, filtering equipment and drying equipment, wherein a steam inlet and a heavy magnesium water inletare formed in one end of the heating pipe; a first reaction kettle stirrer is arranged in the reaction tank; a sampling pipeline is arranged on the left side of the lower end of the settling tank; and a reflux pipeline is arranged on the right side of the lower end of the settling tank. The preparation method comprises the following steps: heating heavy magnesium water with steam, carrying out adecomposition reaction in the reaction tank, entering the settling tank to settle, discharging large-particle materials by the discharging auger, pulping, filtering, and drying, thereby obtaining theheavy magnesium carbonate. The device disclosed by the invention has the beneficial effects that the device disclosed by the invention is simple and compact in equipment, the equipment is normal pressure equipment, and the pH value of the reaction is neutral; the equipment material requirement is low, and the cost is low; and in the preparation method, in addition to the heavy magnesium water andsteam, other extra materials are not added, and the product quality is easy to control.

The invention discloses an automatic control device for realizing the rock joint contact state. The automatic control device comprises a base, rock joints are placed on the base, the support is erected on the base, two baffle boards are arranged above the support, a horizontal moving guide rail is fixed in the middle of the two baffle boards, a horizontal motor is arranged in the horizontal movingguide rail and performs reciprocating motion in the horizontal direction along the horizontal moving guide rail; the horizontal motor is vertically connected with a vertical moving guide rail, a lifting motor is arranged in the vertical moving guide rail, and can performs reciprocating motion in the vertical direction along the vertical moving guide rail, the horizontal motor and the lifting motor are connected with a digital display control box, and the digital display control box controls the motion postures of the horizontal motor and the lifting motor in the horizontal direction and the vertical direction, and the lower end of the lifting motor is connected with a clamp device. According to the invention, the contact state of the rock joints can be automatically realized, and the contact state of the rock joints can be accurately controlled.

The invention relates to a key device in a water-saving sprinkling irrigation system and particularly to a rotating speed adjustable water power driving rotary spraying nozzle and a speed adjusting method. Water currents enter into a channel to impact an impeller, the impeller generates driving force to drive a shaft A to rotate, the shaft A and a back taper gear belt rotate together, a belt drives a taper gear belt to rotate, and the tapered gear belt and a shaft B rotate together. After the water currents pass through the impeller, the shaft B section which enters into the channel enters into an interior channel of the shaft B through a water inlet hole in the wall of the shaft B, the tail end of the shaft B is connected with the spraying nozzle, and the water currents enter into a spraying nozzle channel after passing through the shaft B to spray to the exterior. According to the speed changing method, a rotating speed ratio of the back tapered gear belt and the tapered gear belt is changed due to the fact that the belt positions in the back tapered gear belt and the tapered belt are changed and accordingly the rotating speed of the spraying nozzle is changed.

The invention relates to a steerable and differential hydraulic damping cylinder, which is characterized in that: a first oil hole which is communicated with the front part of the cavity of a cylinder body is formed in the cylinder body; a second oil hole which is communicated with the middle part of the cavity of the cylinder body is formed in the cylinder body; a third oil hole and a fourth oilhole which are communicated with the back part of the cavity of the cylinder body are formed in the cylinder body; the first oil hole, the second oil hole, the third oil hole and the fourth oil hole are axially formed in a cylinder body wall; the middle of the side face of a cylinder bottom is provided with an oil inlet hole which is communicated with the third oil hole or the fourth oil hole; and both sides of the cylinder bottom are provided with a first oil outlet hole and a second oil outlet hole which are communicated with the third oil hole and the fourth oil hole respectively. The damping cylinder has a simple and compact structure and low manufacturing cost, is convenient to use and maintain and lowers equipment manufacturing cost; a quick propelling travel and a slow propelling travel are realized in an entire travel by using two oil holes which are connected with different positions of the cavity of the cylinder body and the speed in the slow propelling travel is adjustable;moreover, a second use state can be realized by changing the installation position of the cylinder body.