CN211412328U - Novel desander - Google Patents

Abstract

A new type of sand remover includes a tank body, two sets of baffles arranged inside the tank body, two high-pressure water nozzles, a slag lifting screw, and a slag scraper. The utility model uses water as the medium, relies on the density difference, and is assisted by high-pressure water for flushing, which is beneficial to the dispersing and separation of light organic matter and large specific gravity inorganic matter in the mixed material of kitchen waste; Setting, increasing the collision friction and dispersing the sediment is beneficial to improve the separation effect of the kitchen waste mixture. The separated light organic matter and large specific gravity inorganic matter are finally removed from the tank continuously and efficiently through the slag scraper and the slag lifting screw respectively. The utility model can realize high-efficiency separation of light and heavy mixed materials in the kitchen waste, and at the same time, the tank body is not provided with any transmission components, which is beneficial to reduce equipment failures and maintenance costs.

Description

A new type of sand remover

technical field

The utility model belongs to the technical field of kitchen waste pretreatment, in particular to a new type of sand remover for separating light organic matter and large specific gravity inorganic matter after screening of kitchen waste.

Background technique

With the rapid economic development and the process of urbanization, the amount of kitchen waste is increasing year by year, and the consequent pollution problem is also becoming more and more serious. Kitchen waste has the characteristics of high water content, high organic content and complex composition. The materials of kitchen waste include not only available organic substances such as rice, noodles, grease, meat, and bones, but also inorganic substances such as paper towels, plastics, glass, ceramics, metals, and sand.

At present, the main process of kitchen waste treatment mostly adopts pretreatment + anaerobic fermentation. The pretreatment part includes: receiving, removing impurities, extracting oil, crushing and so on. The impurity removal part can be separated by secondary screening to separate large-sized impurities (>50mm), medium-sized impurities (2-50mm) and water slurry mixture (<2mm) in the solid material. Among them, medium-sized debris is divided into light organic matter (such as vegetable leaves, rice noodles, fish bones, plastic, paper towels, etc.) and heavy inorganic matter (such as glass, ceramics, metal, gravel, bones, shells, etc.). If these high specific gravity inorganic substances cannot be effectively removed, subsequent equipment will be worn, the service life will be reduced, and maintenance costs will be increased. At the same time, the large specific gravity of inorganic substances entering the anaerobic system will reduce the effective volume of the anaerobic tank over time, which will bring adverse effects.

Most of the existing sand removal devices use paddle stirring in the main body of the device. Through the action of swirling flow and gravity, the large-gravity debris is settled at the conical bottom, and then conveyed and discharged by screw conveying. Reference patents CN205096219U, CN106734050A, CN107803279A, CN106390541B. The design of the main body of this type of patented desander is similar, but the disadvantage is that the design lacks effective means for the collection and removal of light organic matter, and it is easy to stay in the tank. In addition, due to the use of paddle stirring, not only will there be a certain amount of energy consumption, but also the frequent friction of the heavy inorganic matter and the paddle will affect the service life of the latter.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a device for effectively separating large specific gravity organics such as gravel, bone, metal and glass, and light organics such as vegetable leaves and rice noodles.

In order to achieve the above purpose, the utility model adopts the following scheme: a new type of sand remover, comprising a sand removal tank body, two sets of baffles and two high-pressure water nozzles arranged inside the tank body, a slag extraction screw, and scraper.

Further, the de-sanding tank is cylindrical; the lower part of the tank is provided with a heavy slag silo, the side wall of the lower part of the tank is provided with a feeding port, and the upper part of the tank is provided with a discharging port.

Further, the baffles are arranged in two groups inside the tank to play the role of diversion and sedimentation; the baffles belonging to the same group are parallel to each other; the first group of baffles flows along the lower side wall of the tank. The angle of the direction of the feed water flow is 110°; the angle of the second group of baffles and the direction of the feed water flow along the lower side wall of the tank is 55°; the line between the bottom ends of the two sets of baffles and the lower side of the tank The wall tangent directions are parallel.

Further, the slag-lifting screw machine is arranged on one side of the lower part of the tank body and plays a conveying role. The slag feeding end of the slag-lifting screw is connected with the heavy slag silo in the tank; the slag-discharging end extends out of the tank and is provided with a drain tank. The draining tank is provided with water-passing sieve holes.

Further, the high-pressure water jet head is arranged on the inner wall of the tank in two places, one is parallel to the tangential direction of the lower side wall of the tank body, and the other is perpendicular to the tangential direction of the lower side wall of the tank body, so as to play the role of agitation and friction flushing. .

Further, the slag scraper is arranged on the top of the tank and is used for the removal of light organic matter.

The beneficial effects of the utility model are as follows: using water as a medium, the separation of light organic matter and large specific gravity inorganic matter is carried out by relying on the density difference; assisted by the flushing of high-pressure water, the hydraulic stirring of the material inside the tank can be achieved, which is beneficial to the light and heavy mixture. Dispersion and separation of materials; through the angle setting and grading setting of the baffle, the collision friction and the sedimentation are increased, which is beneficial to improve the separation effect of light and heavy mixed materials; through the function of the slag scraper, the floating and partially suspended light The organic matter is continuously and efficiently removed from the tank. In addition, there are no transmission parts inside the tank, which is beneficial to reduce equipment failures and maintenance costs.

Description of drawings

Figure 1 is a schematic diagram of the structure of the desander. Among them: 1 tank, 1-1 feed port, 1-2 discharge port, 1-3 heavy slag silo, 1-4 slag scraper guide rail, 2 bracket, 3 first set of baffles, 4 second set Set of baffles, 5 slag lifting screw machine, 5-1 slag feed end, 5-2 slag discharge end, 6 drain tank, 7 water sieve hole, 8 high pressure water nozzle, 9 slag scraper.

Detailed ways

The present utility model will be further described below with reference to specific embodiments, but the present utility model is not limited to these specific embodiments. Those skilled in the art should appreciate that the present invention covers all alternatives, improvements and equivalents that may be included within the scope of the claims.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", The orientation or positional relationship indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise", etc. is based on The orientation or positional relationship shown in the accompanying drawings is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood To limit the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more, unless otherwise expressly defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, the first feature "on" or "under" the second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

1, the utility model is further described: a new type of sand removal tank, including tank body 1, the tank body 1 is a cylinder, and the horizontal ground is at a certain angle, and is fixed on the horizontal ground through the bracket 2. The lower side wall of the tank body 1 is provided with a feed port 1-1; the upper part of the tank body 1 is provided with a discharge port 1-2; the bottom of the tank body 1 is a heavy slag silo 1-3. Inside the tank body 1, a plurality of baffles are arranged, which are divided into two groups, the first group of baffles 3 and the second group of baffles 4; the baffles belonging to the same group are parallel to each other; the first group The angle between the baffle 3 and the direction of the feed water flow along the lower side wall of the tank body 1 is 110°; the angle between the second group of baffle plates 4 and the direction of the feed water flow along the lower side wall of the tank body 1 is 55° ; The straight line where the bottom ends of the two sets of baffles are located is parallel to the tangential direction of the lower side wall of the tank body 1 .

The slag-lifting screw 5 is arranged on one side of the lower part of the tank body. Drain tank 6. The draining tank 6 is provided with a water-passing sieve 7 .

The high-pressure water jet heads 8 are arranged on the inner wall of the tank body 1 in two places, one is parallel to the tangential direction of the lower side wall of the tank body 1 , and the other is perpendicular to the tangential direction of the lower side wall of the tank body 1 .

The slag scraper 9 is located at the top of the tank body 1 , and is arranged on the slag scraper guide rails 1 - 4 on the inner wall of the tank body 1 .

The specific working process is as follows: the kitchen waste mixed material flows in from the feed port 1-1 at the lower part of the tank body 1, and the mixed material contains light organic matter, large specific gravity inorganic matter and moisture. Since the first set of baffles 3 is provided, the mixed material encounters the first baffle in the first set of baffles 3 in the process of rising with the water, collides with it, and partially disintegrates. Under the obstruction and collision of the baffle, the high specific gravity inorganic matter in the mixed material will settle down along the baffle; at the same time, the part of the food waste material (a mixture of organic and inorganic matter) whose density is lower than that of water in the mixed material, Continue to float up the baffle and enter the flow area at the top of the baffle. Since the first set of baffles 3 is provided with multiple stages, the floating light kitchen waste material experiences multiple collisions and disperses in the staged liquid level when advancing forward. The heavy-duty kitchen waste materials that have been scattered step by step, encounter the obstruction of the subsequent baffles, sink along the baffles, and finally gather in the areas 1-3 of the heavy slag silo; Light substances will bypass the previous baffle and continue to advance to the next baffle. The light material passing through the first set of baffles 3 will pass through the second set of baffles 4 . After the material overflows through the second set of baffles 4, it can continue to be conveyed to the discharge port 1-2 along the direction of the water flow; the material that fails to overflow will descend along the second set of baffles 4, and continue along the direction of the water flow. It sinks down to the heavy slag silo 1-3 against the slope of the side wall of the tank. After the first set of baffles 3 and the second set of baffles 4, water and materials with a density less than water will be finally lifted and transported to the discharge ports 1-2. There is a slag scraper 9 before the discharge port 1-2, and the light material is scraped to the discharge port 1-2 by the slag scraper 9, and the material is continuously discharged to ensure that the light material is at the front end of the discharge port 1-2. Not cumulative.

The high-pressure water jetting head 8 is arranged in two places; the water outlet of the high-pressure water jetting head 8 can not only scour the mixed material adhering to the inner wall of the tank body 1, but also can agitate the mixed material deposited at the bottom. Effect. Through hydraulic scouring and mutual friction between materials, the bonded kitchen waste mixture can be partially broken up. After the mixed material is dispersed, the light material floats with the water, while the heavy material sinks to the heavy slag silo 1-3.

The slag-lifting screw 5 is arranged on one side of the lower part of the tank body. Drain tank 6. The heavy materials accumulated in the heavy slag bins 1-3 are transported out of the tank 1 by the lifting action of the slag lifting screw 5 . The draining tank 6 is provided with a water-passing sieve 7, which can further reduce the moisture content of the heavy material. Before being transported out of the tank 1 , the heavy materials that stay at the slag discharge end 5-2 for a short period of time contain part of the moisture that can enter the drain tank 6 through the water sieve hole 7 . Under the action of gravity, the drained water is finally returned to the tank 1 for recycling.

Claims (4)

1. The utility model provides a novel desander which characterized in that: comprises a sand removing tank body, two groups of flow baffle plates arranged in the tank body, two high-pressure water nozzles, a slag extracting screw machine and a slag scraping machine; the flow baffle plates are arranged in the tank body in two groups to play roles of diversion and sedimentation, large-proportion inorganic matters in the mixed material are downward settled along the flow baffle plates under the obstruction and collision of the flow baffle plates, and meanwhile, kitchen waste material parts with density smaller than that of water in the mixed material continuously float upwards along the flow baffle plates; the high-pressure water spray head is arranged on the inner wall of the tank body in two positions, one position is parallel to the tangential direction of the lower side wall of the tank body, the other position is vertical to the tangential direction of the lower side wall of the tank body, so that the high-pressure water spray head can play a role in washing the mixed materials adhered to the inner wall of the tank body and can also play a role in stirring the mixed materials deposited at the bottom, wherein the light materials float upwards along with water, and the heavy materials sink; the slag extracting screw machine is arranged on one side of the lower part of the tank body, and heavy materials are conveyed out of the tank body under the lifting action of the slag extracting screw machine; the residue scraper is arranged at the top of the tank body, and can continuously and efficiently remove floating and partially suspended light organic matters out of the tank body.

2. The new grit catcher as claimed in claim 1, wherein: the sand removal tank body is cylindrical; the lower part of the tank body is provided with a heavy slag bin, the side wall of the lower part of the tank body is provided with a feed inlet, and the upper part of the tank body is provided with a discharge outlet.

3. The new grit catcher as claimed in claim 1, wherein: the flow baffles are arranged in the tank body in two groups; the flow baffles belonging to the same group are parallel to each other; the angle between the first group of flow baffles and the direction of the feed water flowing along the lower side wall of the tank body is 110 degrees; the angle between the second group of flow baffles and the direction of the feed water flowing along the lower side wall of the tank body is 55 degrees; the straight line of the bottom ends of the two groups of flow baffle plates is parallel to the tangential direction of the lower side wall of the tank body.

4. The new grit catcher as claimed in claim 1, wherein: the slag inlet end of the slag extracting screw machine is connected with a heavy slag bin in the tank body; the slag discharging end extends out of the tank body and is provided with a water draining groove; the draining tank is provided with a water passing sieve pore.

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