CN212576563U - Column type large diameter centrifugal catcher - Google Patents

Abstract

The utility model discloses a column type major diameter centrifugal catcher relates to suspension purifier technical field, including the support, fixed mounting has the catcher body on the support, and catcher body top is provided with the feed head, and the feed head side is provided with spiral case formula and advances the thick liquid mouth, and the top is provided with good thick liquid mouth in the middle of the feed head, and the catcher body includes cone pipe and direct pipe, is provided with the washing water pipe on the direct pipe, and direct pipe below is connected with row's cinder notch, arranges the cinder notch and is provided with the sediment valve between the direct pipe. The utility model can make the slurry enter the catcher body more smoothly through the slurry inlet designed by the volute, and reduce the abrasion of impurities to the inner wall of the catcher body through arranging the separate feeding head; a slag discharge valve is added above the slag discharge port, and the pressure loss caused by direct discharge is reduced by the timing switch of the slag discharge valve; through the arrangement of the cleaning water pipe, the pulp residue is backwashed, so that the fiber loss is reduced to the minimum.

Description

Column type large diameter centrifugal catcher

Technical Field

The utility model relates to a suspension purifier technical field, in particular to column type major diameter centrifugation trap.

Background

The centrifugal catcher is applied to the fields of chemical industry, petroleum, food, pharmacy, mineral separation, coal and water treatment, ships and the like in large scale. A centrifugal trap is a device that separates substances of different specific gravities by means of centrifugal force. Because the centrifugal separator can generate quite high angular velocity, the centrifugal force is far greater than the gravity, and suspended matters in the solution are easy to precipitate; and because the substances with different specific gravities are subjected to different centrifugal forces, the sedimentation speeds are different, and the substances with different specific gravities can be separated. The column type large-diameter centrifugal catcher is a free-return type fluid separator, and is used for protecting downstream equipment components, so that the downstream equipment components can achieve the best anti-abrasion effect, and can efficiently remove coarse-weight foreign matters, such as gravel, broken glass, stone, bolts, nuts and the like, in high-concentration fiber suspension.

However, the centrifugal catcher in the current market has a complex structure, adopts a centrifugal machine to drive liquid flow to rotate, needs an external independent power source and causes energy waste. And the slag discharge port of the centrifugal catcher is generally in an open state, and the slag discharge port in the open state continuously discharges slurry slag, so that the loss of energy consumption and fibers is caused, and resources are greatly wasted.

Disclosure of Invention

To above defect, the utility model aims at providing a column type major diameter centrifugal catcher, this column type major diameter centrifugal catcher energy consumption is low, and the fibre loss rate is low, resources are saved greatly.

In order to realize the purpose, the technical scheme of the utility model is that:

the utility model provides a column type major diameter centrifugation trap, includes the support, fixed mounting has the trap body on the support, trap body top is provided with the feed head, the feed head side is provided with spiral case formula and advances the thick liquid mouth, the top is provided with good thick liquid mouth in the middle of the feed head, the trap body includes cone and through pipe, be provided with the washing water pipe on the through pipe, through pipe below is connected with row's cinder notch, arrange the cinder notch with be provided with the sediment valve between the through pipe.

Wherein, the distance between the slag discharge valve and the slag discharge port is more than 50 MM.

And pressure gauges are respectively arranged on the pulp inlet and the good pulp port.

The diameters of the inner channels of the pulp inlet and the pulp outlet are in a gradual change mode, and the diameter is larger towards the outside.

Wherein, the slurry slag sprayed out from the slag discharge port is sprayed out in a fan shape.

Wherein the cleaning water pipe is positioned at the position 1/3 below the straight-through pipe.

The slurry inlet is connected with a section of straight pipe, and the length of the straight pipe is 10-15 times of the diameter of the outermost end of the slurry inlet.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

because the utility model discloses column type major diameter centrifugal catcher, including the support, fixed mounting has the catcher body on the support, and catcher body top is provided with the feed head, and the feed head side is provided with spiral case formula and advances the thick liquid mouth, and the top is provided with good thick liquid mouth in the middle of the feed head, and the catcher body includes cone pipe and direct pipe, is provided with the washing water pipe on the direct pipe, and direct pipe below is connected with the scum mouth, is provided with the sediment valve between scum mouth and the direct pipe. The utility model can make the slurry enter the catcher body more smoothly through the slurry inlet designed by the volute, effectively convert the potential difference between the superior equipment and the catcher of the equipment into the rotation kinetic energy of the slurry, and reduce the abrasion of impurities to the inner wall of the catcher body by arranging the single feeding head, so that the catcher body is protected by the maximum abrasion resistance; a slag discharge valve is added above the slag discharge port, and the pressure loss caused by direct discharge is reduced by timing switch of the slag discharge valve, and the pressure loss range is reduced to 0.05 Mpa-0.1 Mpa; through the arrangement of the cleaning water pipe, the pulp residue is backwashed, so that the fiber loss is reduced to the minimum.

To sum up, the utility model discloses column type major diameter centrifugal catcher has solved prior art catcher energy consumption height, and the technical problem that the fibre loss rate is big, the utility model discloses the catcher energy consumption is low and the fibre loss rate is little.

Drawings

FIG. 1 is a schematic structural view of a column type large-diameter centrifugal catcher of the present invention;

FIG. 2 is a schematic diagram of a column type large-diameter centrifugal catcher of the present invention;

FIG. 3 is a schematic diagram of the structure of the feed head of FIG. 1;

in the figure: 10. the device comprises a catcher body, 11, a feeding head, 110, a pulp inlet, 111, a good pulp port, 12, a cone pipe, 13, a straight-through pipe, 15, a cleaning water pipe, 20, a support, 30, a slag discharge valve, 40 and a slag discharge port.

Detailed Description

The invention is further explained below with reference to the drawings and examples.

All the orientations referred to in the present specification are based on the orientations shown in the drawings, and only represent relative positional relationships, not absolute positional relationships.

As shown in figures 1, 2 and 3, the column type large-diameter centrifugal trap comprises a support 20, a trap body 10 is fixedly mounted on the support 20, the trap body 10 comprises a cone pipe 12 and a straight-through pipe 13, the cone pipe 12 and the straight-through pipe 13 are connected in a welding mode, welding seams at internal welding points are uniform, and energy consumption in the process of transferring internal slurry is avoided. The special design of the separation chamber, in which the feeding head 11 is arranged on the top of the cone pipe 12 to separate the feeding head 11 from the cone pipe 12, allows the trap body 10 to have the greatest wear-resistant protection, so that the trap body is easy to maintain and replace, and the maintenance cost is low. The top of the middle of the feed head 11 is provided with a good pulp opening 111, and the good pulp opening 111 is provided with a flange connecting disc for connecting subordinate equipment. The good pulp port 111 extends inwards into the feed head 11; the side of the feed head 11 is provided with a volute type slurry inlet 110, a flange connection disc is arranged outside the slurry inlet 110, the flange connection disc is connected with one section of straight pipe (not shown in the figure), the length of the straight pipe is 10-15 times of the diameter of the slurry inlet 110, and by arranging the straight pipe, the slurry inlet amount of the slurry inlet 110 can be effectively guaranteed, so that the slurry inlet pressure of the slurry inlet 110 can be increased. The spiral channel of the slurry inlet 110 extends into the interior of the feed head 11 and spirally surrounds the extended wall of the good slurry port 111. The good pulp opening 111 extends inwards to form a channel which is opened downwards, so that the situation that the pulp which is not centrifugally separated flows out of the good pulp opening 111 by mistake is successfully prevented, and the separation effect of the pulp is improved.

As shown in fig. 3, the diameters of the inlet 110 and the accept 111 are gradually changed, and the diameter is larger as the distance from the inlet 11 is larger. The tapered diameter provides an increased cross-section of the slurry inlet and outlet, which effectively prevents clogging of the slurry inlet and outlet. Slurry enters the feed head 11 tangentially from the slurry inlet 110 and then enters the cone tube 12 . without considering the energy consumption of the slurry in the cone tube 12, the flow rate of the slurry in the cone tube 12 can be expressed by the mathematical formula VR = K , i.e., the flow rate multiplied by the radius at any location is a constant, so that the flow rate of the slurry in the cone tube 12 becomes faster and faster as the diameter becomes smaller. However, since the slurry moves downward and has a smaller diameter, the slurry has a higher concentration of impurities and a higher concentration of the slurry, and the flow rate at the bottom of the tapered pipe 12 is resistant to the slurry having a high concentration and the impurities, resulting in energy consumption. The slurry is converted into kinetic energy by the potential difference between the upper-stage equipment and the current-stage equipment, so that the slurry entering the slurry inlet 110 has a certain pressure. Pressure gauges are respectively arranged on the stock inlet 110 and the good stock outlet 111. The pressure difference deltaP of the inlet and the outlet is calculated by monitoring the pressure of the slurry inlet 110 and the pressure of the good slurry port 111, so that the energy consumption is calculated. The larger the pressure difference delta P is, the higher the concentration of the slurry is, and the production efficiency is improved, but the larger the energy consumption is, the poorer the separation capacity of the catcher is; if the slurry concentration is decreased, the pressure difference ap becomes small, and the production efficiency is greatly decreased although the separation capability of the catcher is improved. The primary task of a centrifugal trap is to find the best solution in the conflict of capacity and efficiency. While the concentration of the ordinary catcher is 0.5-1% which is an economical and reasonable concentration range. The utility model discloses be provided with washing water pipe 15 on through pipe 13, dilute through washing water pipe 15 the thick liquids in to centrifugal catcher and eluriate, concentration that can effectual reduction thick liquids to reduce the energy consumption that produces among the separation process, eluriate the fibre in the middle of returning low pressure thick liquids moreover, can the fibrous loss rate of effectual reduction. The utility model discloses a cooperation of spiral case formula grout inlet 110 and washing water pipe 15 makes the thick liquid purify the concentration range and promotes greatly, purifies concentration steerable 1.0% ~ 5.0%. The washing water pipe 15 is arranged at the position 1/3 below the straight-through pipe, the concentration of the slurry begins to increase, the energy consumption begins to increase, the speed of the slurry begins to decrease, the washing water pipe 15 is additionally arranged, the slurry can be elutriated in a targeted manner, and the interference of the washing water entering the washing water of the washing water pipe 15 on the slurry is reduced. The pressure of intaking is controlled through manual valve (not shown in the figure) on the control washing water pipe 15 to find the equilibrium point of reasonable pressure and flow, under this equilibrium point, can effectually guarantee that the entering of wasing water can not lead to thick liquid whirl direction to change, make the fibre in the thick liquid wash inside the thick liquid simultaneously, discharge along with the thick liquid together.

As shown in fig. 1, 2 and 3, a slag discharge port 40 is connected below the straight pipe 13, a slag discharge valve 30 is arranged between the slag discharge port 40 and the straight pipe 13, a slag discharge chamber is defined between the slag discharge valve 30 and the slag discharge port 40, the height of the slag discharge chamber is greater than 50MM, and the slag discharge valve 30 is arranged, so that the liquid level of the slag discharge chamber is kept constant, the slurry slag discharged from the slag discharge port 40 has a certain pressure, the slag discharge can be accelerated, and the blocking of the slag discharge port 40 is prevented. The energy consumption of the slurry above the slag discharging valve 30 is reduced by timing opening and closing the slag discharging valve, the slag discharging below the slag discharging valve has certain pressure, when the pressure is greater than 2.5kgf/cm2, the slurry slag sprayed out of the slag discharging port 40 is sprayed out in a fan shape, if the pressure is greater than 2.5kgf/cm2 , the slag discharging port 40 still does not discharge slag, which indicates that the caliber of the slag discharging port 40 is too small, a nozzle can be cut, the caliber of the sprayed slurry is enlarged, and the slag discharging resistance is reduced.

As shown in fig. 1, fig. 2 and fig. 3, the work flow of the column-type large-diameter centrifugal catcher of the present invention is as follows:

in the first step, the slurry enters the feed head 11 from the slurry inlet 110 in the tangential direction, and the slurry rotates downwards along the cone 12 in a rotating spiral manner. The vortex movement generates centrifugal force to separate substances with different specific gravities, and the impurities with heavier weight move to the inner wall of the catcher body 10 and are thrown to the core of the vortex when the relative density is low.

Secondly, cleaning water enters the catcher body 10 through the cleaning water pipe 15, and the flow and the pressure of the water are adjusted through a manual valve on the cleaning water pipe 15 to reach a balance point. The slag discharge valve 30 is closed, and the pulp in the straight pipe 13 is elutriated at the moment, so that the slag removal efficiency is ensured, the fiber loss is not too large, and the pulp cannot cause large energy consumption.

And step three, discharging the slurry slag at regular time by the slag discharging chamber, wherein the slag discharging valve 30 is opened during discharging, and the slurry slag is flushed from the slag discharging port 40.

The column type large-diameter centrifugal catcher of the utility model can be used for removing slag in front of a re-crusher of a pulping system and protecting the re-crusher; the rotary wing and the screen frame of the screening equipment can be protected before being used for each screening system; the grinding disc can be used in front of each defibering and grinding system to protect the abrasion of defibering and grinding discs; can be used as a medium concentration purification system before each grading system; it can also be used in other industries requiring purification. The utility model discloses column type major diameter centrifugal catcher can effectual reduction energy consumption, and the fibre loss rate is minimum moreover.

The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without creative labor from the above conception, and all the changes fall within the protection scope of the present invention.

Claims (5)

1. The utility model provides a column type major diameter centrifugation trap, includes the support, fixed mounting has the trap body on the support, its characterized in that, trap body top is provided with the feed head, the feed head side is provided with spiral case formula grout inlet, the top is provided with good thick liquid mouth in the middle of the feed head, the trap body includes cone and through pipe, be provided with the washing water pipe on the through pipe, through pipe below is connected with the row's cinder notch, arrange the cinder notch with be provided with the sediment discharge valve between the through pipe.

2. The column type large diameter centrifugal trap according to claim 1, wherein the distance between the slag discharge valve and the slag discharge port is greater than 50 MM.

3. The column type large-diameter centrifugal catcher according to claim 1, wherein pressure gauges are respectively arranged on the slurry inlet and the good slurry port.

4. The column type large-diameter centrifugal catcher according to claim 1, wherein the diameters of the inner channels of the slurry inlet and the good slurry outlet are gradually changed, and the diameter is larger as the distance from the feed head is larger.

5. The column large diameter centrifuge trap of claim 1 wherein said wash water pipe is located 1/3 below said pass-through pipe.

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