39results about How to "Avoid clogging damage" patented technology

The invention relates to the technical field of construction equipment, and in particular to mechanical equipment for preparing regenerated sand and stone materials by utilizing construction waste particles. The mechanical equipment comprises a storage structure, a storage chamber, a dust removal structure, a limiting structure, a discharging structure, a filtering structure and a driving structure; the driving structure is connected to the discharging structure on the storage structure, so that it is convenient for weight sensing through the discharging structure; when a cart is placed on thedischarging structure, the driving structure is used for driving the discharging structure to drive the cart to rotate for discharging, so that discharging is more convenient and faster, materials inthe cart can be completely discharged conveniently, and the discharging quality is greatly improved; the filtering structure is arranged, so that sewage can be conveniently filtered and recycled, itis convenient for pressure relieving on concrete blocks, broken stone blocks, and tile fragments; the dust removal structure used for removing dust of the concrete blocks, the broken stone blocks andthe tile fragments is connected to the driving structure, and the dust removal structure can be conveniently driven by the driving structure to conduct watering and dust removal on the concrete blocks, the broken stone blocks and the tile fragments in a multi-angle mode.

The invention discloses a washing method for heavy metal contaminated soil. According to the washing method, two stages of smashing devices are arranged, collected soil is preliminarily smashed through the first-stage smashing device, and then the soil is finally smashed through the second-stage smashing device; the soil is thoroughly smashed through the two stages of smashing devices, thus, the soil and a detergent are mixed conveniently, and the washing efficiency is greatly improved; the detergent is atomized through a spray head on a washing mixing mechanism, resources are saved, resourceconsumption is reduced, the purification and washing cost is reduced, the contact area of the detergent and the smashed soil is increased, and thus the washing efficiency is improved; the soil is guided into equipment in batches through a batch loading mechanism, and thus the equipment is prevented from being blocked and damaged; meanwhile, the soil is smashed more easily and purified more easily,the purification time is shortened, and the soil washing efficiency is improved; and when the soil is guided out of the equipment through a solid-liquid separation and conveying device, water stainsand chemical agents left after washing in the soil are separated from the soil, and thus secondary pollution of the soil is avoided.

The invention discloses a method based on testing and evaluating the alkali sensitivity of oil and gas layers. The preparation of brine with different pH values ​​should start from the pH value of formation water and increase the pH value step by step according to the actual situation. The value can be set as 12. The selected core is evacuated and saturated with the first-stage brine, and soaked for 20-24 hours. Under the condition of lower than the critical flow rate, the stable permeability K1 of the core is measured with the first-stage brine, and injected into the second stage. Second-level brine, soak for 20~24h, under the condition of lower than the critical flow rate, use the second-level brine to measure the stable permeability K2 of the core, and change the level of injected brine until the last level of brine is used to measure the permeability of the core. Stable permeability Kn. The method obtains accurate values ​​by testing the alkali sensitivity of the oil and gas layers, which can prevent the high pH value fluid from entering the oil and gas layers, which will cause structural damage of clay minerals and siliceous cement in the oil and gas layers, thereby causing blockage of the oil and gas layers The problem of damage occurs.

The invention discloses expansion joint cutting equipment for bridge construction. According to the expansion joint cutting equipment for bridge construction, a water tank device is used for sprayingwater to a saw blade; fracture and damage of the saw blade caused by being in a high-temperature state for a long time are avoided, water is contacted with dust, flying dust is reduced, a dust collection device is used for collecting dust generated during cutting of the saw blade; the visibility of equipment line cutting is ensured; the body health damage caused by flying dust inhaled by workers is avoided; a large-diameter broken stone storage box is used for blocking and collecting large-diameter dust; large-diameter dust is prevented from entering the dust collection device to cause blockage and damage of the dust collection device; the dust collection device, the water tank device and a cutting turntable device are driven by a same motor; an extra motor is not needed, utilization of the motor is greatly improved, resources and cost are saved, two piston cylinders in opposite states of the dust collection device can enable a dust suction hood to continuously suck dust, the dust falling efficiency is improved, the front shovel cleans a bridge floor, and cutting is prevented from being affected by sundries on a cutting line.

The invention discloses a self-propelled straw picking and binding integrated machine, which comprises a machine body, walking wheels, a picker, driving wheels, a grass remover and a hinge cover; twoends of the front side of the machine body are equipped with the walking wheels, and two ends of the rear side of the machine body are provided with the driving wheels; and the picker in transmissionconnection with the machine body is arranged between the two walking wheels. Compared with the prior art, the self-propelled straw picking and binding integrated machine has the beneficial effects that a round-bundle forming guide belt can conduct normal transmission and the contact area between the belt and a roller can be reduced, so that the round-bundle forming guide belt is prevented from being roughened, reduction of the friction coefficient of the round-bundle forming guide belt and the roller is facilitated, a phenomenon that the round-bundle forming guide belt is thinned and cracked is avoided, straw can be subjected to round bundling forming by means of centrifugal force under guiding and limiting action of the round-bundle forming guide belt, the straw is prevented from being not limited and flying out due to centrifugal force, a phenomenon of clogging and damage of the equipment is avoided, and maintenance cost is reduced.

The invention belongs to the technical field of biological sample acquisition, in particular to a sampling and acquiring device for vegetation with soil for biological detection. Aiming at the problemthat the vegetation is difficult to survive since the existing vegetation sampling and acquiring device has great damage to the vegetation roots, the invention proposes the sampling and acquiring device, which comprises a fixing frame, wherein a supporting column is welded to one side of the inner wall at the top part of the fixing frame, insertion nails are welded to the outer wall at the bottompart of the fixing frame, a Z-shaped frame sleeves one side outer wall of the supporting column, a push rod motor is fixed to the outer wall of the bottom part of the supporting column by means of screws, and a fixed stand is fixed to an output shaft of the push rod motor by means of screws. The sampling and acquiring device can reduce the damage to the vegetation roots, effectively improve the phenomenon that the vegetation root are cut when soil scarifying teeth move, is conductive to enhancing the protection efficiency of the soil scarifying teeth, improves the protection effect on the vegetation roots, can wash away soil on the outer wall of the soil scarifying teeth, keeps the outer wall of the soil scarifying teeth clean, helps to improve the scarifying efficiency, and can reduce rigid damage to the vegetation.

The invention discloses a spraying and irrigation device for agricultural machinery, which comprises a base, a water storage tank, a water-proof pump, an irrigation device and a spraying device, wherein inverted L-shaped armrests are symmetrically arranged on the rear side of the upper end of the base; a placement platform is arranged on the side face of the water storage tank; the water-proof pump is arranged in the water storage tank; a water outlet is communicated with the exterior of the water storage tank through a pipeline; a three-way joint is arranged at the end part of the pipeline; the irrigation device comprises a water spraying pipe and a water receiving pipe; a plurality of water spraying holes are formed on the lower side of the water spraying pipe; the spraying device comprises an electric extension rod and a spraying head; the electric extension rod is arranged above the placement platform; the spraying head is arranged at the upper end of the electric extension rod; asecond connector of the three-way joint is connected with the water receiving pipe; and a third connector of the three-way joint is connected with the spraying head through a rubber hose. According tothe device, plant irrigation or spraying can be controlled unilaterally or simultaneously; the water compensation and wetting efficiency is improved; vibration generated by bump and inertia can be reduced; a service life of the device is prolonged; and the safety is improved.

The invention discloses a cracking-preventing bridge structure. The cracking-preventing bridge structure comprises a concrete bridge body and a steel cylinder arranged in the concrete bridge body. The steel cylinder is rectangular and hollow, the two ends of the steel cylinder are closed, the middle of the steel cylinder is a solid, the top of the solid is provided with a water inlet hole vertically extending downwards, the side face of the solid is provided with a water outlet hole which extends horizontally and is communicated with the water inlet hole and the hollow part of the steel cylinder at the same time, the upper end of the water inlet hole is provided with a thread blocking plug, and the hollow part of the steel cylinder is filled with water. The steel cylinder is filled with water, and due to the fact that the specific heat capacity of water is large, the difference between the temperature inside concrete and the temperature outside the concrete can be reduced very well, the temperature inside the concrete and the temperature outside the concrete is made to reach the balance state as much as possible, and the concrete is effectively prevented from cracking when the difference between the temperature inside concrete inside and the temperature outside the concrete is excessively large.

The invention provides a horizontal slurry spraying device, a paver with the same and application thereof. The horizontal slurry spraying device mainly comprises a cement box, a pipeline in the cementbox extends out of the box, surrounds the paver by a circle and returns into the cement box, the pipeline is composed of a pipeline body and a hose, the hose can be bent according to the spraying position, and the position of the hose located on the paver is adjusted so that the hose can be attached to the paver. The cement paste spraying device can be installed on the paver, cement paste is sprayed to a roadbed while paving is achieved, cement paste caking and solidification caused by paving after spraying are avoided, the time difference between paving and spraying is eliminated, and the adhesive force of a base layer structure is ensured. The stirrer in the cement box is matched with backflow scouring of the backflow pipe to form double stirring, mechanical rotary stirring of the stirrer and water flow scouring stirring of the backflow pipe are conducted at the same time, cement paste is continuously stirred, and the cement paste keeps the uniform mixing characteristic and is not bonded or solidified.

A rainwater recovery system for greenhouses. A water collection tank is provided between the roofs of two adjacent greenhouses. A water outlet is provided at the bottom of the water collection tank. A water collection pool is installed, and a frequency conversion water pump is installed in the water collection pool. The outlet of the frequency conversion water pump is connected to the water supply main pipe, and the water supply main pipe is connected to multiple water supply branch pipes. A nozzle is installed at the end of each water supply branch pipe. The water supply branch pipe and the nozzle are located inside the greenhouse. The greenhouse rainwater recovery system of the present invention can fully utilize the roof area of ​​a large-area greenhouse, and has a large amount of rainwater collection; effectively utilizes rainwater resources, and at the same time reduces the rainwater washing of nursery ridges.

The invention discloses an automatic dosing system for water treatment. The automatic dosing system comprises a cooling tower, a circulating pump, a dosing part and a water storage tank, the output end of the cooling tower, the first water outlet of the circulating pump, the water storage tank and the first input end of the cooling tower are sequentially communicated through a pipeline, the second water outlet of the circulating pump, the dosing part and the second input end of the cooling tower are sequentially communicated through a sampling pipeline, and the first water outlet and the second water outlet are connected in parallel. According to the automatic dosing system for water treatment, the dosage of the scale and corrosion inhibitor and the bactericide can be automatically calculated by monitoring the condition of the cooling water, so that the purposes of dynamically adjusting the water quality of the cooling water and reducing the labor cost are achieved.

The invention relates to an energy-saving building type water energy storage system. The system comprises a water storage tank body and a heat preservation shell, the heat preservation shell is fixedly installed at the periphery of the outer side of the upper end of the water storage tank body, and the energy-saving building type water energy storage system has a very good filtering effect througha novel water inlet connector structure. The system can be well connected and installed with an external water inlet pipeline through threaded connecting holes at the periphery of the upper end of around steel disc, bolts penetrate through the threaded connecting holes in an inserting manner and are rotationally fixed, and a honeycomb net plate is inserted into the upper end of the inner side ofthe round steel disc, so that the system is fixedly connected and installed in an inserted manner, and installation is more convenient; and similarly, an impurity filter screen is inserted into the rear end of the honeycomb net plate, and when external water flow enters, the honeycomb net plate and the impurity filter screen are mutually staggered and matched for use, so that impurities such as silt, metallic oxide or hydroxide in the water flow can be filtered out to the greatest extent, a water inlet connector is cleaned periodically, and the problem of blockage and damage in equipment canbe avoided.

The invention belongs to the technical field of sewage purification and in particular relates to garbage treatment equipment for primary purification of sewage. The garbage treatment equipment comprises a treatment box, wherein a water inlet is formed in the top of the treatment box; a supporting cushion disc is fixedly mounted in the treatment box; a bottom disc is arranged at the top of the supporting cushion disc in a rotary manner; the bottom disc is provided with a plurality of filtering screens and filtering holes; the filtering screens and the filtering holes are distributed in an annular shape; a machine case is fixedly welded with the inner part of the treatment box through a bracket; the machine case is internally provided with a motor; a rotary shaft is fixedly connected with anoutput shaft of the motor; the upper end of the rotary shaft is fixedly connected with the bottom disc; a plurality of rotary propelling devices, which are distributed in the annular shape, are fixedly arranged at the top of the bottom disc through screws; a plurality of grinding rings, which are distributed in the annular shape, are fixedly mounted on an inner wall of the treatment box; throughholes are formed among the grinding rings. The garbage treatment equipment provided by the invention is novel in structure and scientific and reasonable in design; floating matters in the sewage are sufficiently filtered and the purification effect of a purifier is further improved.