CN213727166U - Liquid drainage structure of horizontal screw centrifuge - Google Patents
Liquid drainage structure of horizontal screw centrifuge Download PDFInfo
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- CN213727166U CN213727166U CN202021835213.3U CN202021835213U CN213727166U CN 213727166 U CN213727166 U CN 213727166U CN 202021835213 U CN202021835213 U CN 202021835213U CN 213727166 U CN213727166 U CN 213727166U
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Abstract
The utility model relates to a spiral shell centrifuge flowing back structure crouches, including rotary drum and big end cover axle and locate the epaxial outage of big end cover and overflow mouth, big end cover axle links to each other with the one end of rotary drum, be provided with the spring off-load valve that is used for opening and closing the outage in the outage. The utility model has the advantages of simple and reasonable structure, convenient installation, and only need to slightly change the structure of the existing product.
Description
Technical Field
The utility model relates to a flowing back structure, concretely relates to spiral shell centrifuge flowing back structure crouches belongs to engineering machine tool technical field.
Background
The horizontal screw centrifuge is a processing equipment widely used in solid-liquid separation application, its working principle is that the revolving drum and the screw material pusher rotate at a certain differential speed in the same direction and high speed, the fluid suspended substance formed from liquid and solid is continuously introduced into the screw material pusher through the feeding pipe, after being accelerated, the fluid suspended substance enters the revolving drum, under the action of centrifugal force, the heavier solid is deposited on the wall of the revolving drum to form a sediment layer, the screw material pusher continuously pushes the deposited solid to the conical end of the revolving drum, and the solid is discharged through the slag outlet, and the clear liquid produced therewith flows to the other end of the revolving drum and is discharged through the overflow outlet. After the horizontal screw centrifuge is used, the horizontal screw centrifuge is usually required to be cleaned, otherwise, materials can be remained in the rotary drum, and the rotary drum is unbalanced due to long-time material hardening, so that the machine cannot normally run. The existing horizontal screw centrifuge cleaning method is mainly characterized in that after feeding is stopped, cleaning liquid is injected into the rotary drum and a spiral part through a feeding pipe to clean the interior of the rotary drum and the spiral part, and cleaning liquid is injected into the rotary drum and the interior of a housing through a cleaning pipe arranged on the housing to spray and clean the exterior of the rotary drum and the interior of the housing. In some industries, such as food, pharmacy and the like, the requirement on the cleaning effect is very high, liquid remaining in the rotary drum is not allowed, bacteria breeding is prevented, and risks are generated on food and medicine safety.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the liquid discharge structure of the horizontal screw centrifuge is provided aiming at the defects that in the prior art, residual liquid in a rotary drum is bred with bacteria and risks are generated to food and medicine safety due to the fact that cleaning liquid cannot be completely removed due to structural limitation after the horizontal screw centrifuge is cleaned.
In order to reach above purpose, the utility model provides a spiral shell centrifuge flowing back structure crouches, including rotary drum and big end cover axle and locate the epaxial outage of big end cover and overflow mouth, big end cover axle links to each other with the one end of rotary drum, be provided with the spring off-load valve that is used for opening and closes the outage in the outage.
The utility model discloses it has the outage to open on spiral shell centrifuge's for crouching the big end cover is epaxial for installation spring off-load valve, spring off-load valve can close and open the epaxial outage of big end cover, can get rid of remaining washing liquid in the rotary drum completely through the outage.
Furthermore, a first liquid discharge hole and a second liquid discharge hole are formed in the large end cover shaft, and the first liquid discharge hole is communicated with the second liquid discharge hole.
Furthermore, a spring unloading valve for opening and closing the first liquid discharge hole and the second liquid discharge hole is arranged in the second liquid discharge hole.
Furthermore, the spring unloading valve consists of a valve body and a spring, and the spring is positioned at the upper part of the valve body.
Furthermore, the second liquid discharge hole is a stepped blind hole with a small outer part and a large inner part, and the spring and the valve body are arranged at a section with a larger aperture of the stepped blind hole.
Furthermore, the first drainage hole and the overflow port are through holes communicating the interior of the rotary drum with the exterior of the large end cover shaft.
The utility model discloses a theory of operation is: when the rotary drum normally runs and produces at a certain rotating speed, the centrifugal force is greater than the elastic force of the spring in the liquid discharge hole, the spring unloading valve is in a closed state, the valve body blocks the liquid discharge hole, and when the rotating speed of the rotary drum is reduced to a certain degree, the centrifugal force is less than the elastic force of the spring, the spring unloading valve is opened accordingly, and the liquid discharge hole is unblocked. When the horizontal screw centrifuge finishes the separation work and needs to be cleaned, the feeding is stopped as long as the cleaning button is pressed, the rotary drum and the screw material pusher are both reduced to the preset rotating speed to run, and simultaneously, the cleaning liquid is introduced, and the reduced rotating speed of the rotary drum can enable sediment and liquid to sink in the rotary drum instead of rotating along with the rotary drum. After a period of operation, the spiral pusher can be selected to rotate in the opposite direction for carrying out the same cleaning. And observing the discharged cleaning solution during cleaning, if the cleaning solution is clear and free of impurities, stopping introducing the cleaning solution, remaining a small amount of the cleaning solution in the rotary drum, further reducing the rotary speed of the rotary drum, gradually reducing the centrifugal force applied to the spring unloading valve on the rotary drum until the centrifugal force is less than the elastic force of the spring, opening the unloading valve, and completely discharging the remaining cleaning solution.
Furthermore, overflow ports which radially penetrate through the large end cover shaft are distributed on the large end cover shaft along the circumference, and the overflow ports are annular.
Furthermore, the large end cover shaft is circumferentially provided with first liquid discharge holes which radially penetrate through the large end cover shaft, the first liquid discharge holes are located in the outer ring of the overflow port, and the first liquid discharge holes are annular.
Furthermore, a plurality of first drainage holes which are uniformly distributed along the circumferential direction are formed in the large end cover shaft, the first drainage holes are located in the outer ring of the overflow port, and the first drainage holes are long holes.
Furthermore, a plurality of second liquid discharge holes which are uniformly distributed along the circumference are formed in the outer circumferential surface of the large end cover shaft, and the second liquid discharge holes are located on the outer ring of the first liquid discharge holes and are communicated with the first liquid discharge holes.
Adopt the utility model discloses, after the spiral shell centrifuge that crouches washs, remain a small amount of washing liquids in the rotary drum, can avoid remaining liquid and breed the bacterium through the whole discharges of spring unloading valve, influence food and drug production safety. In a word, the utility model discloses a flowing back simple structure is reasonable, simple to operate, only need structural change a little at current product can.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention during normal operation.
Fig. 2 is a schematic structural view of the utility model during cleaning and draining.
In the figure: the hydraulic pump comprises a large end cover shaft 1, an overflow port 2, a first liquid discharge hole 3, a second liquid discharge hole 4, a spring 5, a valve body 6 and a rotary drum 7.
Detailed Description
Example one
A liquid discharge structure of a horizontal decanter centrifuge is shown in figures 1 and 2 and comprises a large end cover shaft 1, a rotary drum 7, a liquid discharge hole and an overflow port 2 which are arranged on the large end cover shaft 1, wherein the large end cover shaft 1 is connected with the rotary drum 7, and a spring unloading valve for opening and closing the liquid discharge hole is arranged in the liquid discharge hole. The liquid discharge hole is including locating first liquid discharge hole 3 and second liquid discharge hole 4 on big end cover axle 1, and first liquid discharge hole 3 is linked together with second liquid discharge hole 4, is provided with the spring off-load valve that is used for opening and closing first liquid discharge hole 3, second liquid discharge hole 4 in the second liquid discharge hole 4. The spring unloading valve consists of a valve body 6 and a spring 5, and the spring 5 is positioned at the upper part of the valve body 6.
The second liquid discharge hole 4 is a stepped blind hole with a small outer part and a large inner part, and the spring 5 and the valve body 6 are arranged at a section with a larger aperture of the stepped blind hole. The first drainage hole 3 and the overflow port 2 are through holes communicating the inside of the rotary drum 7 with the outside of the large end cover shaft 1. In addition, the large end cover shaft 1 is circumferentially provided with overflow ports 2 which radially penetrate through the large end cover shaft 1, and the overflow ports 2 are annular; the large end cover shaft 1 is circumferentially provided with first liquid discharge holes 3 which radially penetrate through the large end cover shaft 1, the first liquid discharge holes 3 are positioned on the outer ring of the overflow port 2, and the first liquid discharge holes 3 are annular; and a group of second liquid discharge holes 4 uniformly distributed along the circumference are formed in the outer circumferential surface of the large end cover shaft 1, and the second liquid discharge holes 4 are positioned on the outer ring of the first liquid discharge holes 3 and are communicated with the first liquid discharge holes 3.
As shown in fig. 1, when the horizontal decanter centrifuge normally operates, the centrifugal force applied to the valve body 6 is exactly equal to the elastic force applied to the valve body 6 by the spring 5, and the valve body 6 is positioned in the middle of the first drainage hole 3 and blocks the first drainage hole 3 and the second drainage hole 4, so that the liquid in the rotary drum 7 is normally discharged from the overflow port 2, and the separation effect of the horizontal decanter centrifuge is ensured. As shown in fig. 2, when the horizontal decanter centrifuge finishes the separation work, and after the cleaning is finished and the speed is reduced, the liquid layer in the rotary drum 7 becomes thinner gradually, the liquid cannot be discharged from the overflow port 2, at this time, the centrifugal force applied to the valve body 6 becomes smaller, and the liquid is pushed to the lower part by the elastic force of the spring 5, so that the first liquid discharge hole 3 and the second liquid discharge hole 4 are communicated with each other with the inside of the rotary drum 7, and the thin liquid layer is discharged through the first liquid discharge hole 3 and the second liquid discharge hole 4.
In addition to the above embodiments, the present invention can also have other embodiments, for example, a set of first drainage holes 3 uniformly distributed along the circumferential direction is formed on the large end cap shaft 1, and the first drainage holes 3 are elongated holes. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.
Claims (10)
1. The utility model provides a spiral shell centrifuge drainage structures crouches which characterized in that: the rotary drum type overflow valve is characterized by comprising a rotary drum (7), a large end cover shaft (1), a liquid discharge hole and an overflow port (2), wherein the liquid discharge hole and the overflow port (2) are formed in the large end cover shaft (1), the large end cover shaft (1) is connected with one end of the rotary drum (7), and a spring unloading valve used for opening and closing the liquid discharge hole is arranged in the liquid discharge hole.
2. A decanter centrifuge liquid discharge structure according to claim 1, characterized in that: a first liquid discharge hole (3) and a second liquid discharge hole (4) are formed in the large end cover shaft (1), and the first liquid discharge hole (3) is communicated with the second liquid discharge hole (4).
3. A decanter centrifuge liquid discharge structure according to claim 2, characterized in that: and a spring unloading valve for opening and closing the first liquid discharging hole (3) and the second liquid discharging hole (4) is arranged in the second liquid discharging hole (4).
4. A decanter centrifuge liquid discharge structure according to claim 3, characterized in that: the spring unloading valve is composed of a valve body (6) and a spring (5), and the spring (5) is located on the upper portion of the valve body (6).
5. A decanter centrifuge liquid discharge structure according to claim 4, characterized in that: the second liquid discharge hole (4) is a stepped blind hole with a small outer part and a large inner part, and the spring (5) and the valve body (6) are arranged on a section with a larger aperture of the stepped blind hole.
6. A decanter centrifuge liquid discharge structure according to claim 4, characterized in that: the first drainage hole (3) and the overflow port (2) are through holes communicated with the inside of the rotary drum (7) and the outside of the large end cover shaft (1).
7. A decanter centrifuge liquid discharge structure according to claim 1, characterized in that: the large end cover shaft (1) is circumferentially provided with overflow ports (2) which radially penetrate through the large end cover shaft (1), and the overflow ports (2) are annular.
8. A decanter centrifuge liquid discharge structure according to claim 7, characterized in that: big end cover axle (1) distributes along the circumference has first drainage hole (3) that radially link up big end cover axle (1), and first drainage hole (3) are located the outer lane of overflow mouth (2), first drainage hole (3) are cyclic annular.
9. A decanter centrifuge liquid discharge structure according to claim 7, characterized in that: big end cover axle (1) is gone up to open and is had a plurality of first drainage hole (3) along circumferencial direction evenly distributed, first drainage hole (3) are located the outer lane of overflow mouth (2), first drainage hole (3) are rectangular hole.
10. A decanter centrifuge drainage structure according to claim 8 or 9, characterized in that: the outer circumferential surface of the large end cover shaft (1) is provided with a plurality of second liquid discharge holes (4) which are uniformly distributed along the circumference, and the second liquid discharge holes (4) are positioned on the outer ring of the first liquid discharge holes (3) and are communicated with the first liquid discharge holes (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021835213.3U CN213727166U (en) | 2020-08-27 | 2020-08-27 | Liquid drainage structure of horizontal screw centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021835213.3U CN213727166U (en) | 2020-08-27 | 2020-08-27 | Liquid drainage structure of horizontal screw centrifuge |
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| Publication Number | Publication Date |
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| CN213727166U true CN213727166U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021835213.3U Active CN213727166U (en) | 2020-08-27 | 2020-08-27 | Liquid drainage structure of horizontal screw centrifuge |
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| CN (1) | CN213727166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116459955A (en) * | 2023-06-02 | 2023-07-21 | 江苏华大离心机制造有限公司 | Centrifugal separation drum and centrifugal separation equipment |
-
2020
- 2020-08-27 CN CN202021835213.3U patent/CN213727166U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116459955A (en) * | 2023-06-02 | 2023-07-21 | 江苏华大离心机制造有限公司 | Centrifugal separation drum and centrifugal separation equipment |
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