CN220736216U

CN220736216U - Evaporator

Info

Publication number: CN220736216U
Application number: CN202322030246.0U
Authority: CN
Inventors: 蔡飞云; 叶泓希; 黄自校; 周宝青; 陈自爱
Original assignee: WENZHOU CHINZ MACHINERY CO LTD
Current assignee: WENZHOU CHINZ MACHINERY CO LTD
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-04-09
Anticipated expiration: 2033-07-31

Abstract

The utility model discloses an evaporator, which comprises a feed inlet and a discharge outlet, wherein the feed inlet is provided with a filter screen, the feed inlet is provided with a flushing device, the flushing device comprises a flushing pipeline, the flushing pipeline comprises a waste liquid pipe, the waste liquid pipe is communicated with the filter screen, and the flushing device is used for reversely flowing flushing liquid through the filter screen and the waste liquid pipe. According to the utility model, the filter screen and the flushing device of the filter screen are arranged at the feed inlet of the raw material, the filter screen is used for filtering impurities in the raw material, the flushing device comprises the waste liquid pipe, flushing liquid reversely flows through the filter screen by using the flushing device, and the flushing liquid carries impurities to be discharged from the waste liquid pipe, so that the flushing of the filter screen is realized, the frequency of unpicking and washing is reduced, and the maintenance time is shortened.

Description

Evaporator

Technical Field

The present utility model relates to an evaporator.

Background

The evaporator is a common device for purifying a medical liquid, and is also a heat exchanger, and generally, a heating medium is introduced into an evaporation chamber to perform heat exchange so that the temperature of the heating medium is reduced, and the temperature of a solution is increased to evaporate. The evaporation process is a process of separating volatile solvents and non-volatile solutes in the solution, the solution is heated to boiling point, and part of the solvents are evaporated to generate secondary steam, so that part of the solvents are separated from the solution, and the concentration of the solution is improved. The initial solution is also referred to as a raw material, which generally comprises a pharmaceutical ingredient, the solvent is generally water, the raw material contains certain impurities, and after the impurities enter an evaporator for evaporation, is easy to adsorb and remain in the evaporator, and a filter screen is usually arranged at a feed inlet in order to reduce or avoid impurities entering the evaporator. Chinese patent No. CN202222938198.0, publication No. CN218572837U, discloses an MVR multiple effect evaporator, which provides an evaporator that is easy to disassemble and wash the filter screen, and is disadvantageous in that this approach requires a long repair and maintenance cycle.

Disclosure of Invention

In view of the above drawbacks, an object of the present utility model is to provide an evaporator that can flush a filter screen.

For this purpose, the evaporator comprises a feed inlet and a discharge outlet, wherein the feed inlet is provided with a filter screen, the feed inlet is provided with a flushing device, the flushing device comprises a flushing pipeline, the flushing pipeline comprises a waste liquid pipe, the waste liquid pipe is communicated with the filter screen, and the flushing device is used for reversely flowing flushing liquid through the filter screen and flows into the waste liquid pipe.

Further, the three-way ball valve is communicated with the evaporator feeding pipeline and the waste liquid pipe respectively, the filter screen is fixed in the flow channel of the valve core of the three-way ball valve, the filter screen comprises a first flow surface and a second flow surface, raw materials flow from the first flow surface to the second flow surface of the filter screen, when the valve core of the three-way ball valve rotates to enable the liquid inlet pipeline to be communicated with the waste liquid pipe, flushing liquid is input from the feeding pipeline, and the flushing liquid flows from the second flow surface of the filter screen to the first flow surface and flushes impurities attached to the first flow surface into the waste liquid pipe.

Further, the inside runner of tee bend ball valve case includes first passageway, second passageway and third passageway, first passageway, second passageway, third passageway form T shape, first passageway and second passageway are parallel, third passageway perpendicular to first passageway and second passageway, the filter screen is established in first passageway, works as first passageway intercommunication charge-in pipeline, second passageway intercommunication evaporimeter pipeline, third passageway seal, be used for carrying the raw materials to the evaporimeter, when first passageway and waste liquid pipe intercommunication, third passageway and charge-in pipeline intercommunication, second passageway seal, input flushing fluid to the charge-in pipeline for wash the filter screen.

The flushing pipeline and the feeding pipeline have a section of common pipeline, the filter screen is arranged in the common pipeline, and when the feeding pipeline is communicated and the flushing pipeline is closed, the first flow surface of the feeding filter screen flows to the second flow surface; when the feeding pipeline is closed and the flushing pipeline is communicated, flushing liquid flows from the second flow surface to the first flow surface of the filter screen.

Further, the common pipeline comprises a vertical pipe or a pipeline which is obliquely arranged, the filter screen is horizontally arranged in the vertical pipe or the pipeline which is obliquely arranged, and the feed flows from the lower part to the upper part of the common pipeline.

Further, the feeding pipeline is Z-shaped, a concave part lower than the feeding pipeline is formed at the bottom of the vertical pipe, and the waste liquid pipe is connected to the concave part.

The valve comprises a valve chamber, a valve rod and two valve cores fixed on the valve rod, wherein the valve chamber comprises a first outlet, a second outlet and a third outlet, the first outlet is communicated with a feeding pipeline and a waste liquid pipeline, a control valve is arranged on the feeding pipeline and the waste liquid pipeline, and the second outlet and the third outlet are respectively connected with an evaporator pipeline and a flushing pipeline.

Further, the evaporator further comprises an evaporation chamber, a steam inlet, a cooling water outlet, a secondary steam outlet and a discharge hole.

The novel beneficial effects of the utility model are as follows:

the utility model sets up the filter screen in the feed inlet of raw materials, the filter screen is used for filtering the impurity in the raw materials, the utility model has also set up the flushing arrangement, the said flushing arrangement includes the waste liquid pipe, utilize the flushing arrangement to flow the flushing fluid backward through the filter screen, and make the flushing fluid carry impurity to discharge from the waste liquid pipe, realize the flushing to the filter screen, reduce the frequency of unpicking and washing, reduce the maintenance time.

Drawings

FIG. 1 is a schematic diagram of example 1;

FIG. 2 is a schematic cross-sectional view of the three-way ball valve feed line communication of example 1;

FIG. 3 is a schematic cross-sectional view of the three-way ball valve waste pipe communication in example 1;

FIG. 4 is a schematic diagram of example 2;

FIG. 5 is a schematic diagram of example 3;

fig. 6 is a schematic diagram of example 4.

Reference numerals illustrate: 1. feeding material a mouth; 2. a feed conduit; 3. three-way ball valve; 301. a first channel; 302. a second channel; 303. a third channel; 4. a discharge port; 5. an evaporation chamber; 6. a steam inlet; 7. a cooling water outlet; 8. a secondary steam outlet; 9. flushing the pipeline; 901. a waste liquid pipe; 10. a filter screen; 101. a first flow surface; 102. a second flow surface; 11. a common conduit; 111. a concave portion; 12. an electromagnetic valve; 121. a first outlet; 122. a second outlet; 123. a third outlet; 13. and (5) impurities.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1 to 6, an evaporator of the present utility model comprises a feed port 1, a discharge port 4, an evaporation chamber 5, a steam inlet 6, a cooling water outlet 7 and a secondary steam outlet 8, wherein the feed port 1 is connected with a feed pipe 2, the discharge port 4 is connected with a discharge pipe, the steam inlet 6 is connected with a steam pipe, the cooling water outlet 7 is connected with a cooling water pipe, the evaporation chamber 5 comprises a heating chamber provided with the steam inlet 6 and the cooling water outlet 7, a central circulation pipe and a heating pipe bundle are arranged in the heating chamber, raw materials circularly flow in the central circulation pipe and the heating pipe bundle for evaporation purification after entering the evaporator from the feed port 1, purified liquid is discharged from the discharge port 4, the feed port 1 is provided with a filter screen 10 and a flushing device, the flushing device comprises a flushing pipe 9, the flushing pipe 901 comprises a waste liquid pipe 901, the waste liquid pipe 901 can be communicated with the filter screen 10, and the flushing device is used for reversely flowing flushing liquid through the filter screen 10 and flowing to the waste liquid pipe 901. Referring to fig. 1, 2 and 3, in embodiment 1 of the present utility model, a three-way ball valve 3 is included, the three-way ball valve 3 is respectively communicated with a feed pipe 2 and a waste liquid pipe 901 of an evaporator, the filter screen 10 is fixed in a flow passage of a valve core of the three-way ball valve 3, the valve core internal flow passage of the three-way ball valve 3 comprises a first passage 301, a second passage 302 and a third passage 303, the first passage 301, the second passage 302 and the third passage 303 are integrally formed into a T shape, the first passage 301 and the second passage 302 are parallel, the third passage 303 is perpendicular to the first passage 301 and the second passage 302, the filter screen 10 is arranged in the first passage 301, the filter screen 10 comprises a first flow surface 101 and a second flow surface 102, when the first passage 301 is communicated with the feed pipe 2, the second passage 302 is communicated with the evaporator pipe, and the third passage 303 is closed, the first passage 301 is communicated with the feed pipe 2, and the third passage 302 is closed, the flushing liquid 10 is fed into the feed pipe 2. Raw material flows from the first flow surface 101 to the second flow surface 102 of the strainer 10, impurities 13 are adsorbed on the first flow surface 101, and when the valve body of the three-way ball valve 3 is rotated so that the feed pipe 2 is communicated with the waste liquid pipe 901, a flushing liquid is fed from the feed pipe 2, flows from the second flow surface 102 of the strainer 10 to the first flow surface 101, and the impurities attached to the first flow surface 101 are flushed into the waste liquid pipe 901. The flushing line 9 may be connected to the feed line 2 for supplying flushing liquid.

Referring to fig. 4, in embodiment 2 of the present utility model, a section of common pipe 11 is provided between the flushing pipe 9 and the feeding pipe 2, the filter screen 10 is provided in the common pipe 11, the common pipe 11 is formed by connecting pipes on both sides through a joint, a threaded pipe can be provided on the outer side of the joint, the filter screen 10 is provided between the joints, both sides of the common pipe 11 are respectively connected with the flushing pipe 9, the waste liquid pipe 901, the feeding pipe 2 and the evaporator pipe, when the feeding pipe 2 is connected and the flushing pipe is closed, the raw material flows from the first flow surface 101 to the second flow surface 102 of the filter screen 10; when the feed pipe 2 is closed and the flushing pipe is in communication, flushing liquid flows from the second flow surface 102 of the screen 10 to the first flow surface 101, flushing the screen 10 in this way.

In the above embodiment 2, referring to fig. 5, the common pipe 11 includes a standpipe, and the feed pipe 2 is a Z-shaped pipe, but the common pipe 11 may be a pipe provided obliquely, and the strainer 10 is horizontally provided in the standpipe, so that the raw material flows from a lower position to an upper position of the common pipe 11. In this embodiment, the impurities fall from the surface of the filter screen 10 under the action of gravity, so that the amount of impurities adsorbed on the surface of the filter screen 10 is reduced, and the impurities are easier to wash away during flushing.

Referring to fig. 5, embodiment 3 is modified on the basis of embodiment 2 in that the bottom of the standpipe is formed with a recess 111 lower than the feed pipe 2, the waste liquid pipe 901 is connected to the recess 111, and the dropped impurities accumulate in the recess 111, so that the dropped impurities can be prevented from entering the solution again to a certain extent and flowing to the filter screen 10, the filter screen 10 is more likely to accumulate impurities, and the waste liquid pipe is connected to the recess, thereby facilitating the discharge of impurities.

Referring to fig. 6, embodiment 4 of the present utility model includes a solenoid valve 12, the solenoid valve 12 including a valve housing including a first outlet 121, a second outlet 122 and a third outlet 123, a valve stem and two spools fixed to the valve stem, wherein the first outlet 121 communicates with a feed pipe 2 and a waste liquid pipe 901, control valves are provided on the feed pipe 2 and the waste liquid pipe 901, and the second outlet 122 and the third outlet 123 are connected to a pipe of an evaporator and a flushing pipe 9, respectively.

The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims

1. The utility model provides an evaporator, includes feed inlet and discharge gate, the feed inlet is equipped with filter screen, its characterized in that: the feed inlet is equipped with washing unit, and washing unit includes the flushing pipe, and the flushing pipe includes the waste liquid pipe, the waste liquid pipe can be with filter screen intercommunication, washing unit is used for flowing through the filter screen backward and flows to the waste liquid pipe with the flushing liquid.

2. An evaporator according to claim 1 wherein: comprises a three-way ball valve which is respectively communicated with an evaporator feeding pipeline and a waste liquid pipe, a filter screen which is fixed in a flow passage of a valve core of the three-way ball valve and comprises a first flow surface and a second flow surface, raw materials flow from the first flow surface to the second flow surface of the filter screen, when the valve core of the three-way ball valve rotates to enable the liquid inlet pipeline to be communicated with the waste liquid pipe, flushing liquid is input from the feeding pipeline, flows to the first flow surface from the second flow surface of the filter screen, and impurities attached to the first flow surface are flushed into the waste liquid pipe.

3. An evaporator according to claim 2 wherein: the three-way ball valve spool is characterized in that the internal flow passage comprises a first passage, a second passage and a third passage, the first passage, the second passage and the third passage form a T shape, the first passage and the second passage are parallel, the third passage is perpendicular to the first passage and the second passage, the filter screen is arranged in the first passage, when the first passage is communicated with the feeding pipeline, the second passage is communicated with the evaporator pipeline and the third passage is closed, the filter screen is used for conveying raw materials to the evaporator, and when the first passage is communicated with the waste liquid pipe, the third passage is communicated with the feeding pipeline and the second passage is closed, flushing fluid is input into the feeding pipeline and used for flushing the filter screen.

4. An evaporator according to claim 1 wherein: the flushing pipeline and the feeding pipeline have a section of common pipeline, the filter screen is arranged in the common pipeline, and when the feeding pipeline is communicated and the flushing pipeline is closed, the first flow surface of the feeding filter screen flows to the second flow surface; when the feeding pipeline is closed and the flushing pipeline is communicated, flushing liquid flows from the second flow surface to the first flow surface of the filter screen.

5. An evaporator according to claim 4 wherein: the common pipeline comprises a vertical pipe or a pipeline which is obliquely arranged, the filter screen is horizontally arranged in the vertical pipe or the pipeline which is obliquely arranged, and the feed flows from the lower part to the upper part of the common pipeline.

6. An evaporator according to claim 5 wherein: the feeding pipeline takes a Z shape, a concave part lower than the feeding pipeline is formed at the bottom of the vertical pipe, and the waste liquid pipe is connected to the concave part.

7. An evaporator according to claim 1 wherein: the valve comprises a valve chamber, a valve rod and two valve cores fixed on the valve rod, wherein the valve chamber comprises a first outlet, a second outlet and a third outlet, the first outlet is communicated with a feeding pipeline and a waste liquid pipeline, a control valve is arranged on the feeding pipeline and the waste liquid pipeline, and the second outlet and the third outlet are respectively connected with an evaporator pipeline and a flushing pipeline.

8. An evaporator according to any one of claims 1 to 7 wherein: the device also comprises an evaporation chamber, a steam inlet, a cooling water outlet, a secondary steam outlet and a discharge hole.