CN217583253U - Solid impurity collecting device for low-temperature slurry material - Google Patents

Abstract

The utility model discloses a solid sundries collecting device for low-temperature slurry materials, which comprises a valve and a filtering component; the valve is a flange connection ball valve, and one end of the valve is connected with the filtering component through a flange; the valve rod of the valve consists of a horizontal valve rod and a vertical valve rod, the horizontal valve rod is linked with the vertical valve rod through a transmission device consisting of bevel gears, a packing box is arranged on the vertical valve rod, and the top of the vertical valve rod is connected with a valve hand wheel; the filter assembly comprises shell body, filter screen and the bottom mouthpiece of taking the ring flange, and the shell body is the big little awl tube-shape of lower extreme in upper end, and the filter screen is unanimous with the shell body shape, and the bush is on shell body inner wall, and the shell body bottom is located to the bottom mouthpiece, with the inside intercommunication of filter assembly. The utility model discloses can realize collecting solid debris, online maintenance function, the colleague can prevent that the hand wheel from freezing, preventing the crystallization from blockking up.

Description

Solid impurity collecting device for low-temperature slurry material

Technical Field

The utility model discloses can be used to fields such as oil refining, chemical industry, medicine, food, specifically speaking relates to a solid debris collection device for low temperature thick liquid material.

Background

In the petrochemical industry, a crystallizer is a key device for a process for preparing paraxylene by a crystallization method. The crystallizer is a vertical container with rotating parts, and is filled with solid-liquid mixed xylene in a low-temperature slurry state. The rotating parts include rotating shafts, scrapers, and the like. As the equipment operates, parts of the equipment (such as small metal parts like bolts, studs, springs, etc.) may loosen and fall down to be deposited on the bottom of the vessel. In order to prevent the solid impurities from entering a downstream pump to damage the impeller or block a rotating shaft. It is necessary to arrange a solid impurity collecting device at the bottom of the container. However, the prior art is mainly used for separating solid matters in continuous material circulation, and is not suitable for collecting solid impurities at the bottom of the crystallizer.

Meanwhile, such a solid debris collecting device is generally provided with a valve for cutoff to facilitate on-line maintenance. For the solid impurity collecting device installed at the bottom of the crystallizer, the valve is required to be suitable for low-temperature slurry materials. In the prior art, a low-temperature valve usually lengthens a valve cover and a valve rod, and a part of gas is reserved in a gap between the valve rod and a valve body below a packing part. When the valve is horizontally installed, the gas forms a sealing layer, so that the low-temperature medium cannot directly contact with the filler, and the cold quantity of the medium is isolated. And because the solid impurity collecting device is arranged at the bottom of the crystallizer, the valve is required to be vertically arranged, and the valve rod is horizontal. The gas sealing layer is no longer effective, and the low-temperature medium spreads to the position of the filler along the gap between the valve rod and the valve body. So that the elasticity of the filler is reduced and leakage occurs. Further, the valve rod exposed out of the cold insulation layer part of the valve is frozen, so that the valve cannot be operated.

Patent 202022160765.5 discloses an anti-icing type low temperature valve. Comprises a valve body, a flashboard, a valve cover, a valve rod, a filler cover, a hand wheel and the like. The valve body is internally provided with a flashboard, and the valve body outside the flashboard is fixed with a valve cover. The flashboard upwards extends to have the valve rod, and the valve gap upwards extends to have the long cover of hollow column of extension distance. The hollow on long cover upper portion inwards caves in has a seal groove, and the packing is filled to the seal groove, is fixed with a packing lid on the seal groove with adjustable. The top end of the valve rod is fixedly sleeved with the hand wheel. Utilize adjustable seal structure, can constantly fasten long formula low temperature valve in order to realize sealing, greatly improve the life of valve when frostproofing. However, if the valve is horizontally installed, the low-temperature medium still contacts with the packing, so that part of the valve rod is frozen.

Patent CN201721115736.9 discloses a filtering device comprising a filter comprising a filtering shell and a filtering cartridge. The side wall of the shell is provided with a material inlet and a material outlet. The filter core comprises a cone-shaped filter screen, and the height direction of the filter screen is vertical to the height direction of the shell. The filter screen is transversely arranged in the shell. During filtering, the solid-containing fluid directly impacts the surface of the filter screen, and the solid is filtered by the filter screen. The filter screen can be self-cleaned and is not easy to block. But it is not suitable for low temperature slurry materials.

Patent CN201520023167.X discloses a petroleum coke collecting and conveying device in the field of petroleum refining. The device mainly comprises a coke storage tank barrel, a flat gate valve, a connecting hose, petroleum coke lifting equipment and a belt conveyor. After entering the device, the coke is cooled by the cylinder commercial spray device and then conveyed to lifting equipment through a flat gate valve and a hose. And then is sent out of the device by a belt conveyor. The technology cannot be used for collecting solid impurities at the bottom of the low-temperature slurry material crystallizer.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the solid sundries can not be collected at the bottom of the crystallizer in the prior art, the utility model provides a solid sundries collecting device for low-temperature slurry materials.

The utility model provides a solid sundries collecting device for low-temperature slurry materials, which comprises a valve and a filtering component; the valve is a flange connection ball valve, and one end of the valve is connected with the filtering component through a flange; the valve rod of the valve consists of a horizontal valve rod and a vertical valve rod, the horizontal valve rod is linked with the vertical valve rod through a transmission device consisting of bevel gears, a packing box is arranged on the vertical valve rod, and the top of the vertical valve rod is connected with a valve hand wheel; the filter assembly comprises shell body, filter screen and the bottom mouthpiece of taking the ring flange, and the shell body is the big little awl tube-shape of lower extreme in upper end, and the filter screen is unanimous with the shell body shape, and the bush is on shell body inner wall, and the shell body bottom is located to the bottom mouthpiece, with the inside intercommunication of filter assembly.

The upper end of the filter screen is open, and the lower end and the cylinder wall are provided with filter holes for collecting solid impurities falling in the crystallizer.

The upper end of the filter screen is provided with a flange, the filter screen is installed between the valve shell and the shell flange of the filter assembly in a butt-clamp mode, and gaskets are arranged between the filter screen and the upper flange and between the filter screen and the lower flange for sealing, so that a better sealing effect can be obtained.

The annular gap between the lower part of the packing box and the vertical valve rod is filled with gas, so that low-temperature materials can be prevented from directly contacting the packing box, and part of cold energy is isolated.

The utility model discloses not only can be used to collect the solid debris of crystallizer bottom, still can be used to the collection of neutral container bottom solid debris such as process industries such as oil refining, chemical industry, medicine, food.

The utility model provides a solid debris collection device installs in the crystallizer bottom, with crystallizer bottom mouthpiece lug connection.

The utility model discloses a theory of operation does:

and under the normal working condition, the ball valve is opened. Solid impurities in the crystallizer are mixed in the slurry material, slowly fall into the filter screen under the action of gravity, and are deposited at the bottom of the filter screen. And continuously introducing nitrogen into the filtering component through a bottom nozzle, and continuously bubbling to prevent the low-temperature slurry material in the collecting device from being completely crystallized. The valve is provided with a horizontal valve rod and a vertical valve rod, and the cold quantity is isolated at the packing position of the vertical valve rod. The situations of filler failure and hand wheel icing caused by the contact of materials with the filler can be avoided.

And when the working condition is overhauled, closing the ball valve. The material in the collecting device is discharged through a bottom nozzle, and solid impurities are left in the filter screen. And removing the bolt between the valve and the filter assembly.

The flushing working condition refers to that most of materials in the collecting device are completely crystallized to block the collecting device. At this point the ball valve can be kept open and hot flushing liquid is continuously introduced into the collecting device through the bottom nozzle. Until the crystallized materials in the collecting device are melted, the blockage is eliminated, and the washing is finished.

The utility model discloses following beneficial effect has:

1) The solid impurities are collected at the bottom of the crystallizer;

2) The online disassembling and overhauling function of the sundries collecting device is realized.

3) The problems that the low-temperature valve is vertically installed, the filler fails, and the hand wheel is frozen and cannot be opened and closed are solved;

4) The problem of crystallization blockage of low-temperature slurry materials in the collecting device is solved;

5) The problem of in the collection device material crystallization after blockking up unable operation is solved.

Drawings

Fig. 1 is a schematic structural view of the solid debris collecting device of the present invention.

In the figure: 1-valve shell, 2-valve seat, 3-valve body, 4-horizontal valve rod, 5-bevel gear, 6-vertical valve rod, 7-stuffing box, 8-vertical valve rod shell, 9-valve hand wheel, 10-bolt nut, 11-gasket, 12-outer shell, 13-filter screen and 14-bottom nozzle.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in figure 1, the utility model provides a be used for low temperature slurry material solid debris collection device mainly includes valve and filtering component two parts, passes through flange bolted connection between the two parts.

The valve is a ball valve and mainly comprises a valve shell 1, a valve seat 2, a valve body 3, a horizontal valve rod 4, a bevel gear 5, a vertical valve rod 6, a packing box 7, a vertical valve rod shell 8 and a valve hand wheel 9; two sides of the center of the valve body 3 are connected with a horizontal valve rod 4, and the horizontal valve rod 4 and a vertical valve rod 6 are driven by a transmission device consisting of bevel gears 5; the vertical valve rod 6 is arranged in a vertical valve rod shell 8, a packing box 7 is arranged in the middle of the vertical valve rod 6 and used for sealing the vertical valve rod 6, and a valve hand wheel 9 is arranged on the upper portion of the vertical valve rod 6.

The filter assembly mainly comprises an outer shell 12, a filter screen 13 and a bottom nozzle 14, wherein the filter screen 13 is sleeved on the inner wall of the outer shell 12, and the bottom nozzle 14 is arranged at the bottom of the outer shell 12.

The valve shell 1 and the outer shell 12 are fixedly connected through bolts and nuts 10, the filter screen 13 is installed between the valve shell 1 and the outer shell 12 through flanging opposite clamping, and gaskets 11 are arranged between the upper flange and the lower flange for sealing.

The device of the utility model shown in figure 1 is vertically fixed on the bottom nozzle of the crystallizer through the upper end flange. Under normal operating conditions, the valve body 3 is in the open position. Solid impurities in the crystallizer are mixed in the slurry material, slowly fall into the filtering component through the valve under the action of gravity, and are deposited at the bottom of the filtering screen 13. And continuously introducing nitrogen into the filtering component through the bottom nozzle 14, and continuously bubbling to prevent the low-temperature slurry material in the collecting device from being completely crystallized. The low temperature material in the valve will spread into the vertical valve rod housing 8 along the gap between the horizontal valve rod 4 and the valve housing 1, and a small amount of material will be in the valve rod housing 8. A small amount of gas is stored in an annular gap between the lower part of the packing box 7 and the vertical valve rod 6, so that low-temperature materials can be prevented from directly contacting the packing box 7 and part of cold energy can be isolated.

When the working condition is overhauled, the valve body 3 is in a closed position. The valve hand wheel 9 is rotated, and the valve hand wheel 9 drives the vertical valve rod 6 to rotate. The vertical valve rod 6 drives the horizontal valve rod 4 to rotate continuously through a transmission device consisting of the bevel gear 5, and the valve is closed. The bottom nozzle 14 stops introducing nitrogen gas, the materials in the collecting device are discharged through the bottom nozzle 14, and solid impurities are left in the filter screen 13. The bolt and nut 10 between the valve housing 1 and the outer housing 12 is removed and the entire filter assembly is removed.

And under the flushing working condition, the material in the collecting device is crystallized and blocked. Keeping the valve body 3 in the open position, the hot flushing liquid is continuously fed into the collecting device through the bottom nozzle 14. Until the crystallized material in the collection device melts. After the blockage is removed, the hot flushing liquid is stopped and the nitrogen continues to be supplied through the bottom nozzle 14. And the solid impurity collecting device normally operates.

Claims (4)

1. The utility model provides a solid debris collection device for low temperature slurry material which characterized in that: comprises a valve and a filter component; the valve is a flange connection ball valve, and one end of the valve is connected with the filtering component through a flange; the valve rod of the valve consists of a horizontal valve rod and a vertical valve rod, the horizontal valve rod is linked with the vertical valve rod through a transmission device consisting of bevel gears, a stuffing box is arranged on the vertical valve rod, and the top of the vertical valve rod is connected with a valve hand wheel; the filter assembly comprises shell body, filter screen and the bottom mouth of pipe of taking the ring flange, and the shell body is the big end cone-shape of end down, and the filter screen is unanimous with the shell body shape, and the bush is on shell body inner wall, and the bottom mouth of pipe is located the shell body bottom, with the inside intercommunication of filter assembly.

2. The apparatus of claim 1, wherein: the upper end of the filter screen is open, and the lower end and the cylinder wall are provided with filter holes.

3. The apparatus of claim 1, wherein: the upper end of the filter screen is provided with a flange, and the filter screen is installed between the valve shell and a shell flange of the filter assembly in a butt-clamping manner.

4. The apparatus according to any one of claims 1 to 3, wherein: and gas is sealed in an annular gap between the lower part of the stuffing box and the vertical valve rod.

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