CN212701358U - Reverse osmosis separation experiment machine - Google Patents

Abstract

The utility model belongs to membrane separation test equipment field especially relates to a reverse osmosis separation experiment machine. Including frame and the material jar of setting in the frame, the bottom intercommunication of material jar has the feed pump, the material jar of keeping away from of feed pump is provided with the cross-flow filtration membrane subassembly, cross-flow filtration membrane subassembly includes that the level is the subassembly body of tubulose setting and sets up at this internal filtration membrane of subassembly, filtration membrane includes the one-level filtration membrane and the second grade filtration membrane that set up from top to bottom, separate into three cavity about the subassembly body between one-level filtration membrane and the second grade filtration membrane, the utility model discloses a design a cross-flow filtration membrane subassembly, effectual realization second grade cross-flow filters to when simplifying the structure, improved the separation effect, simultaneously, the utility model discloses simple structure, processing convenience are fit for using widely on a large scale.

Description

Reverse osmosis separation experiment machine

Technical Field

The utility model belongs to membrane separation test equipment field especially relates to a reverse osmosis separation experiment machine.

Background

The traditional membrane separation experimental equipment utilizes the screening process of a membrane separation technology, the pressure difference between two sides of a membrane is used as a driving force, a filtering membrane is used as a filtering medium, under a certain pressure, when a stock solution flows through the surface of the membrane, a plurality of fine micropores densely distributed on the surface of the membrane only allow water and small molecular substances to pass through to form a permeation solution, and substances with the volume larger than the micropore diameter of the surface of the membrane in the stock solution are intercepted on the liquid inlet side of the membrane to form a concentrated solution, so that the purposes of purifying, separating and concentrating the stock solution are realized. However, in the actual experiment, many feed liquids need to be separated and filtered twice or even many times to achieve the purpose of the experiment, and if one device is used for operation, the filtering membrane needs to be continuously replaced, so that not only is the time wasted, but also the experiment efficiency is influenced; if a plurality of experiment machines are used for operation, the occupied area is increased, and the cost is wasted.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that foretell membrane separation test equipment exists, provide a reasonable in design, simple structure and can limit realization multi-stage filtration's reverse osmosis separation experiment machine.

In order to achieve the above purpose, the technical solution adopted by the present invention is that, the present invention provides a reverse osmosis separation experimental machine, which comprises a frame and a material tank arranged on the frame, wherein the bottom of the material tank is communicated with a feed pump, the material tank far away from the feed pump is provided with a cross-flow filtration membrane assembly, the cross-flow filtration membrane assembly comprises a horizontal assembly body in tubular arrangement and a filtration membrane arranged in the assembly body, the filtration membrane comprises a primary filtration membrane and a secondary filtration membrane arranged up and down, the assembly body is divided into an upper chamber, a middle chamber and a lower chamber between the primary filtration membrane and the secondary filtration membrane, wherein the top of the upper chamber is provided with a feed pipe, one side of the upper chamber is provided with a coarse liquid pipe, one side of the middle chamber is provided with a primary filtration liquid pipe, the bottom of the lower chamber is provided with a secondary filtration pipe, the device comprises a component body, a coarse liquid pipe, a material tank, a reflux pipe, a primary filter pump, a primary reflux pipe, a vacuum pump and a secondary filter pipe, wherein the coarse liquid pipe is communicated with the reflux pipe, the reflux pipe is communicated with the material tank, the primary filter pipe is further provided with the primary filter pump, the other end of the primary filter pump is communicated with the primary reflux pipe, the primary reflux pipe is communicated with the material tank, the secondary filter pipe is communicated with the vacuum pump, and one end.

Preferably, a booster pump is further arranged between the feed pump and the cross-flow filtration membrane module.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. the utility model provides a reverse osmosis separation experiment machine through designing a cross-flow filtration membrane module, the effectual second grade cross-flow that has realized filters to when simplifying the structure, improved the separation effect, simultaneously, the utility model discloses simple structure, processing convenience are fit for using widely on a large scale.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic diagram of the structure of a reverse osmosis separation experimental machine provided in example 1;

FIG. 2 is a schematic diagram of the internal structure of the reverse osmosis separation experimental machine provided in example 1;

FIG. 3 is a schematic structural view of a cross-flow filtration membrane module provided in example 1;

fig. 4 is a schematic structural view of an assembly body provided in embodiment 1;

in the above figures, 1, a frame; 2. a material tank; 3. a feed pump; 4. a booster pump; 5. a cross-flow filtration membrane module; 51. an assembly body; 52. sealing the cavity; 53. a feed pipe; 54. a coarse liquid pipe; 55. a first-stage filtering membrane; 56. a secondary filtering membrane; 57. a primary filtrate pipe; 58. a secondary filter pipe; 59. a water permeable plate; 6. a primary filtration pump; 7. a vacuum pump; 8. a return pipe; 9. a primary return line.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

Embodiment 1, as shown in fig. 1 to 4, this embodiment provides a reverse osmosis separation testing machine, which aims to simplify the separation procedure and improve the separation effect, and for this reason, the reverse osmosis separation testing machine provided in this embodiment includes a frame 1 and a material tank 2 disposed on the frame 1, a feed pump 3 is communicated with the bottom of the material tank 2, the feed pump 3 is used to provide power for the circulation of the separation liquid, a cross-flow filtration membrane module 5 is disposed on the feed pump 3 and away from the material tank 2, in order to improve the filtration effect of the cross-flow filtration membrane module 5, in this embodiment, the cross-flow filtration membrane module 5 includes a module body 51 disposed horizontally in a tubular shape and a filtration membrane disposed in the module body 51, in this embodiment, the module body 51 is disposed horizontally, seal cavities 52 are disposed at two ends of the module body 51, the seal cavities 52 are connected with the module body 51 in a threaded manner, the seal chambers 52 have two functions, one is to seal both ends of the module body 51, and the other is to provide a chamber for the separated liquid to flow through before and after separation, for which purpose, a feed pipe 53 is connected to one seal chamber 52 on one side of the module body 51, and the other seal chamber 52 is connected to a secondary filter pipe 58, that is, a pipe for discharging the filtered liquid.

In order to realize multistage filtration, in this embodiment, filtration membrane includes one-level filtration membrane 55 and second grade filtration membrane 56 that set up from top to bottom, in this embodiment, be provided with the slot on subassembly body 51, one-level filtration membrane 55 and second grade filtration membrane 56 adopt the mode of pegging graft to insert in subassembly body 51, the purpose that sets up like this, mainly be for the convenient filtration membrane of change, of course, also can adopt the mode of direct fixation, because adopt the filterable mode of cross-flow to separate, the impurity that is stained with on the filtration membrane is very few, change the frequency is not big, can directly change subassembly body 51.

Like this, first-order filtration membrane 55 and second grade filtration membrane 56 separate into three upper, middle and lower cavities with subassembly body 51, wherein, the top of going up the cavity is provided with inlet pipe 53, in this embodiment, it means that the top of going up the cavity sets up inlet pipe 53 and waits to separate the liquid and get into the cavity from the top of upper chamber, this is for giving first-order filtration membrane 55 a pressure from top to bottom, make and wait to separate the liquid and obtain filtering, in this embodiment, in order to realize above-mentioned purpose, be provided with porous disk 59 in the upper chamber, porous disk 59 divides the upper chamber into two, evenly distributed has the hole of permeating water on porous disk 59, just so formed decurrent pressure. A crude liquid pipe 54 is arranged at one side of the upper chamber, the crude liquid pipe 54 is an outlet for collecting the liquid to be separated which cannot pass through the primary filtering membrane, and the liquid to be separated is firstly pressed downwards in the whole separation process, so that the liquid to be separated firstly passes through the primary filtering membrane and then enters the crude liquid pipe 54, and thus, the cross-flow filtration is completed.

In this way, the filtrate filtered by the first cross flow enters the middle chamber, in order to provide the filtrate power of the middle chamber, the bottom of the lower chamber is provided with the secondary filter pipe 58, the secondary filter pipe 58 is communicated with the vacuum pump 7, so that the pressure of the lower chamber is reduced, the filtrate passes through the secondary filter membrane 56, and meanwhile, in order to provide the filtrate outlet which cannot pass through the secondary filter membrane, one side of the middle chamber is provided with the primary filter liquid pipe 57, so that the secondary filtration is completed, and the secondary filtration is realized.

In this embodiment, the feeding pipe 53 is connected to the feeding pump 3, the feeding pump 3 provides power for the primary filtration, and in order to ensure that the liquid to be separated has sufficient pressure passing through the primary filtration membrane 55, in this embodiment, a pressurizing pump 4 is further provided between the feeding pump 3 and the cross-flow filtration membrane assembly 5, so as to provide a higher flow rate by the pressurizing pump 4, thereby providing a guarantee for the primary filtration.

Considering the incomplete filtration of the filtrate subjected to primary filtration (namely, a part of the filtrate which does not pass through the filtration membrane can pass through), for this reason, the coarse liquid pipe 54 is communicated with the return pipe 8, the pipe orifice of the return pipe 8 is arranged above the material tank 2, and similarly, considering the incomplete filtration of the secondary filtration, the primary filtration pipe is also provided with the primary filtration pump 6, the other end of the primary filtration pump 6 is communicated with the primary return pipe 9, and the pipe orifice of the primary return pipe 9 is arranged above the material tank 2, so that the unfiltered filtrate can be filtered again. The filtration pump is primarily powered and may be provided on the raw liquid pipe 54.

Through foretell setting, make and treat that the parting liquid can pass through secondary filter in succession, and then improved the filter effect, reach the purpose of this embodiment.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (2)

1. A reverse osmosis separation experiment machine comprises a rack and a material tank arranged on the rack, wherein the bottom of the material tank is communicated with a feed pump, the feed pump is provided with a cross-flow filtering membrane assembly far away from the material tank, the cross-flow filtering membrane assembly comprises an assembly body horizontally arranged in a tubular shape and a filtering membrane arranged in the assembly body, the filtering membrane comprises a first-stage filtering membrane and a second-stage filtering membrane which are arranged up and down, the assembly body is divided into an upper chamber, a middle chamber and a lower chamber by the first-stage filtering membrane and the second-stage filtering membrane, wherein the top of the upper chamber is provided with a feed pipe, one side of the upper chamber is provided with a crude liquid pipe, one side of the middle chamber is provided with a primary filtering liquid pipe, the bottom of the lower chamber is provided with a secondary filtering pipe, the feed pump is communicated with the feed pump, the assembly comprises a primary filter pipe, a primary return pipe, a vacuum pump and a secondary filter pipe, wherein the primary filter pipe is further provided with a primary filter pump, the other end of the primary filter pump is communicated with the primary return pipe, the primary return pipe is communicated with a material tank, the secondary filter pipe is communicated with the vacuum pump, and one end, away from the assembly body, of the secondary filter pipe is provided with a liquid outlet.

2. A reverse osmosis separation experimental machine according to claim 1, wherein a booster pump is further arranged between the feed pump and the cross-flow filtration membrane module.

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