CN215542740U

CN215542740U - Material screening device

Info

Publication number: CN215542740U
Application number: CN202122029180.4U
Authority: CN
Inventors: 蒋析文; 刘霭珊; 连献兰; 赵继光
Original assignee: Guangzhou Da'an Gene Co ltd
Current assignee: Guangzhou Da'an Gene Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-01-18
Anticipated expiration: 2031-08-26

Abstract

The application relates to the field of biomedical science and discloses a material screening device. The material screening device comprises a screen part, wherein the screen part is provided with a screen cavity, and the screen cavity is provided with a screen inlet at the top and a screen outlet at the bottom; the feeding pipeline is vertically arranged, and the top of the feeding pipeline is communicated with the sieve column outlet of the sieve column part; the drying part, the screen part and the feeding pipeline are arranged in a drying cavity of the drying part; at least one gas injection device, at least one gas injection device is provided with at least one gas injection port positioned in the screen column cavity. This application material sieving mechanism can realize the purpose of automatic screening, avoids the material to absorb moisture atrophy or glue the wall.

Description

Material screening device

Technical Field

The application relates to the field of biomedical, especially, relate to material sieving mechanism.

Background

The biological agent has high requirement on the storage environment during the use process, and the activity of the biological agent is damaged due to high temperature. In the prior art, cold chain transportation and low-temperature storage are usually adopted for keeping alive, but the storage method has the defects of instability, high cost, short shelf life and the like. In order to overcome the defects, a novel technology in the field of freeze drying is developed, namely a freeze-dried bead technology, the technology has the advantages of accurate quantification, single-person single-part, convenience in product use and the like, has no requirement on packaging materials, can be subpackaged into packaging materials such as eight-connecting tubes, centrifuge tubes, microfluidic chips, various biological chip cards, flow tubes, 96-hole plates and the like, and can be stored at normal temperature to realize rapid diagnosis. Because the packaging material is not limited, the capacity can be exerted to the limit of the freeze dryer. However, the freeze-dried beads have disadvantages in production, such as very strict development difficulty, very weak property, easy powder falling, small volume, light weight, and easy friction to generate static electricity; if the freeze-dried beads are contacted with air for a long time and easily absorb moisture and shrink, the requirements on a subpackaging environment and subpackaging equipment are very strict, and the subpackaging is usually carried out manually in the current market, which is one of the reasons that the freeze-dried beads cannot be produced on a large scale at a later time.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a material sieving mechanism, can realize the purpose of automatic screening, avoid the material to absorb moisture atrophy or glue the wall.

In order to solve the above technical problem, a first aspect of the present application provides a material screening device, including: a screen section having a screen chamber with a screen inlet at a top and a screen outlet at a bottom; the feeding pipeline is vertically arranged, and the top of the feeding pipeline is communicated with a sieve column outlet of the sieve column cavity; the screen part and the feeding pipeline are arranged in a drying cavity of the drying part; at least one gas injection device having gas injection ports located within the screen column cavity.

In an embodiment of the first aspect, the air injection ports are provided at the bottom of the sieve column chamber.

In an embodiment of the first aspect, at least part of the side wall of the screen section is provided with mesh openings, and the screen chamber is in communication with the drying chamber through the mesh openings.

In an embodiment of the first aspect, a first screening element is further provided between the top of the feed conduit and the column outlet of the column chamber.

In an embodiment of the first aspect, the first screening element is a round hole screen.

In an embodiment of the first aspect, the material is spherical and the diameter of the mesh of the round hole screen is 10% to 40% larger than the predetermined acceptable diameter of the material.

In an embodiment of the first aspect, the screen section and the inner wall surface of the feed pipe are coated with an antistatic layer.

In an embodiment of the first aspect, the lower portion of the screen section is funnel shaped.

In an embodiment of the first aspect, further comprising a charging portion, a bottom opening of the charging portion being in communication with the sieve column inlet of the sieve column chamber.

In an embodiment of the first aspect, a second screening element is provided between the bottom opening of the charge portion and the sieve column inlet of the sieve column chamber.

For prior art, this application embodiment realizes the automatic screening of material through installing air jet system additional in the column sieve intracavity, through avoiding the material to absorb moisture atrophy or glue the wall with the sieving mechanism setting in dry chamber.

Drawings

FIG. 1 is a schematic structural diagram of a material sieving apparatus according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a material sieving apparatus including freeze-dried beads according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present application. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings so that those skilled in the art to which the present application pertains can easily carry out the present application. The present application may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present application, components that are not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

Throughout the specification, when a device is referred to as being "connected" to another device, this includes not only the case of being "directly connected" but also the case of being "indirectly connected" with another element interposed therebetween. In addition, when a device "includes" a certain component, unless otherwise stated, the device does not exclude other components, but may include other components.

When a device is said to be "on" another device, this may be directly on the other device, but may also be accompanied by other devices in between. When a device is said to be "directly on" another device, there are no other devices in between.

Although the terms first, second, etc. may be used herein to describe various elements in some instances, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface, etc. are described. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" include plural forms as long as the words do not expressly indicate a contrary meaning. The term "comprises/comprising" when used in this specification is taken to specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but does not exclude the presence or addition of other features, regions, integers, steps, operations, elements, and/or components.

Terms representing relative spatial terms such as "lower", "upper", and the like may be used to more readily describe one element's relationship to another element as illustrated in the figures. Such terms are intended to include not only the meanings indicated in the drawings, but also other meanings or operations of the device in use. For example, if the device in the figures is turned over, elements described as "below" other elements would then be oriented "above" the other elements. Thus, the exemplary terms "under" and "beneath" all include above and below. The device may be rotated 90 or other angles and the terminology representing relative space is also to be interpreted accordingly.

Although not defined differently, including technical and scientific terms used herein, all terms have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Terms defined in commonly used dictionaries are to be additionally interpreted as having meanings consistent with those of related art documents and the contents of the present prompts, and must not be excessively interpreted as having ideal or very formulaic meanings unless defined.

The material split charging device comprises a sieve column part, a feeding pipeline, a drying part and at least one air injection device, wherein the sieve column part is provided with a sieve column cavity, and the sieve column cavity is provided with a sieve column inlet at the top and a sieve column outlet at the bottom; the feeding pipeline is vertically arranged, wherein the top of the feeding pipeline is communicated with a sieve column outlet of the sieve column cavity; the screen part and the feeding pipeline are arranged in a drying cavity of the drying part; the at least one gas injection device has at least one gas injection port located in the screen column cavity. The material to be dispensed in this embodiment is a freeze-dried bead, and may be a material of any shape and volume.

A first embodiment of the present application is described below with reference to the accompanying drawings, in which the material screening apparatus of the present application comprises a screen section 1, a feed pipe 2, an air injection device 3 and a drying section 4, as shown in fig. 1 and 2. The screen section 1 has a screen section chamber 10, the screen section chamber 10 having a screen section inlet 11 at the top and a screen section outlet 12 at the bottom. Specifically, the bottom sieve column outlet 12 communicates with the top of the feed conduit 2, and the feed conduit 2 is vertically disposed, such that material, e.g., lyophilized beads, falls into the bottom of the sieve column chamber 10 and passes through the sieve column outlet 12 into the feed conduit 2.

This application material sieving mechanism still includes air jet system 3, and the air jet system 3's air jet sets up in sieve column chamber 10 inside, and air jet system 3 spouts the air current to sieve column chamber 10 inside through the air jet, blows the freeze-dried pearl in sieve column chamber 10, and the freeze-dried pearl that the size is less is blown easily and floats in the upper strata in sieve column chamber 10, and the great qualified freeze-dried pearl of size enters into to the charge-in pipeline 2 more easily because the volume is great can be at sieve column chamber 10 bottom drunkenness each other. The quantity of air jet system 3 is preferably 2, and its air jet prefers to set up in the bottom in sieve column chamber 10, and the air jet is located the bottom and more conveniently blows the less freeze-dried pearl of size and floats in the upper strata, and during the freeze-dried pearl of qualified size got into charge-in pipeline 2, and partial shipment is efficient higher. It is understood that the gas injection openings of the gas injection device 3 can also be arranged at other locations, for example on the side walls.

This application material sieving mechanism still includes drying portion 4, and drying portion 4 has dry chamber 40. In particular, both the screen section 1 and the feed conduit 2 are provided in the drying chamber 40 of the drying section 4. The freeze-dried beads are ensured to be always in a dry environment in the subpackaging process, and the freeze-dried beads are prevented from shrinking or sticking to the wall due to moisture absorption. In some embodiments, at least part of the screen section 1 is provided with a plurality of mesh openings communicating with the drying chamber 40, and also at least part of the feed conduit 2 is provided with a plurality of mesh openings communicating with the drying chamber 40, thereby facilitating dry air to enter the screen section 1 and the feed conduit 2, resulting in better drying efficiency. The diameter of the feed conduit 2 may be slightly larger than the diameter of the freeze-dried beads, for example, the diameter of the feed conduit may be set to be 10% -40% larger than the predetermined acceptable diameter of the freeze-dried beads, over which freeze-dried beads or a plurality of freeze-dried beads bonded together cannot enter the feed conduit 2, while the smaller freeze-dried beads are blown to float on the upper layer of the sieve column cavity 10 by the air jet, thereby ensuring that the freeze-dried beads of acceptable size can enter the feed conduit 2. In some embodiments, a first screening element (not shown) is further disposed between the top of the feed conduit 2 and the column outlet 12 of the column chamber 10, the first screening element is a circular hole screen, the diameter of the mesh of the circular hole screen can be set to be 10% -40% larger than the predetermined acceptable diameter of the freeze-dried beads, and the first screening element preferably can be a single circular hole screen, so as to ensure that the freeze-dried beads of the acceptable size can enter the feed conduit 2. But also can establish first screening spare into detachable construction, through the not round hole size of customization equidimension, can select the freeze-drying pearl of unidimensional according to actual demand, improved equipment reuse rate. It will be appreciated that the openings of the screen of the first screening element may be of other shapes. The lower part of the sieve part 1 can be arranged in a funnel shape as shown in figure 1, so that freeze-dried beads can be conveniently gathered towards the middle of the bottom, and the subpackaging efficiency is improved.

In addition, the upper side of the sieve column cavity 1 can be further provided with a charging part 5, the charging part 5 is provided with a charging cavity 50, the bottom opening of the charging part 5 is communicated with the sieve column inlet 11 of the sieve column cavity 10, a second screening part (not shown in the figure) can be arranged between the bottom opening of the charging part 5 and the sieve column inlet 11 of the sieve column cavity 10, the second screening part can be provided with a screen with a plurality of round holes, and the mesh diameter of the screen with the round holes can be set to be 10% -40% larger than the preset qualified diameter of the freeze-dried beads. The freeze-dried beads can be prescreened by a second screening element, leaving a plurality of larger sized or bonded beads in a single piece within the charging chamber 50. But can be understood. The openings of the drying net of the second screen may also be of other shapes. At least part of the charging portion 5 may also be provided with a plurality of meshes communicating with the drying chamber 40, whereby the entry of drying air into the charging portion 5 is facilitated to achieve a better drying efficiency.

In addition, the inner wall surfaces of the sieve column part 1, the feeding pipeline 2 and the charging part 5 can be coated with antistatic layers, so that the materials are prevented from generating static electricity by friction in the screening process and floating on the inner wall. In addition, this application partial shipment device can adopt plastics materials such as PP, PE or PET to at the inner wall surface coating antistatic backing that freeze-dried pearl probably contacted, for example at the inner wall surface coating antistatic backing of sieve column portion, charge-in pipeline and portion of feeding, also can adopt metal material such as stainless steel or mix metal particle in plastics material, make it possess the function of destaticizing through making its earth connection, reduce as far as possible because of the static reason produces freeze-dried pearl and glue the wall and float scheduling problem.

This application material sieving mechanism realizes the automatic screening of material through installing air jet system additional in the column sieve intracavity, and efficiency is higher, through avoiding the material to absorb moisture atrophy or glue the wall with the sieving mechanism setting in dry chamber.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims

1. A material screening device, comprising:

a screen section having a screen chamber with a screen inlet at a top and a screen outlet at a bottom; the feeding pipeline is vertically arranged, and the top of the feeding pipeline is communicated with a sieve column outlet of the sieve column cavity;

the screen part and the feeding pipeline are arranged in a drying cavity of the drying part;

at least one gas injection device having gas injection ports located within the screen column cavity.

2. The material screening apparatus of claim 1, wherein the air jets are located at the bottom of the sieve column chamber.

3. The material screening device of claim 1, wherein at least a portion of the side walls of the screen section are provided with mesh openings, and the screen chamber is in communication with the drying chamber through the mesh openings.

4. The material screening apparatus of claim 1, wherein a first screening element is further disposed between the top of the feed conduit and the screen column outlet of the screen column chamber.

5. A material screening apparatus according to claim 4, wherein the first screening element is a round hole screen.

6. The material screening device of claim 5, wherein the material is spherical, and the diameter of the mesh of the round hole screen is 10% -40% larger than the preset acceptable diameter of the material.

7. The material screening apparatus of claim 1, wherein the screen section and the inner wall surface of the feed conduit are coated with an antistatic layer.

8. A material screening apparatus according to claim 1, wherein the lower portion of the screen section is funnel-shaped.

9. The material screening apparatus of claim 1, further comprising a charging portion, a bottom opening of the charging portion being in communication with a screen column inlet of the screen column chamber.

10. A material screening apparatus according to claim 9, wherein a second screening element is provided between the bottom opening of the charging portion and the sieve column inlet of the sieve column chamber.