CN218743218U - Double-layer standard sieve - Google Patents

Abstract

The application discloses double-deck standard sieve belongs to the technical field of sifter utensil, and its technical scheme main points include: an outer frame body; an inner frame body; screening a screen; the outer frame body comprises a reinforcing protrusion, an outer reducing portion and a lower clamping portion, the inner frame body comprises an upper clamping portion and an inner supporting protrusion, and the screen is arranged between the upper clamping portion and the lower clamping portion. The application provides a standard sieve, has higher structural strength.

Description

Double-layer standard sieve

Technical Field

The application belongs to the technical field of sieve utensil, especially relates to a double-deck standard sieve.

Background

The standard sieve is a key apparatus in a sieving particle size analyzer, is used for laboratory sieving equipment, also called test sieve, sample separation sieve and analysis sieve, can analyze the particle size distribution (percentage content) of different particle sizes in a granular sample by using the standard sieve, is mainly used for laboratories in universities, research institutes and enterprises, is also very important data in the industries of metallurgy, chemical engineering, building materials, grinding materials and the like in the screening and measuring of granular materials, and is very important physical quantity in the analysis and research of various sediments (or soil) in the fields of geology, petroleum, coal, water conservancy, oceans, environmental protection and the like.

The traditional Chinese patent with the publication number of CN217411365U discloses a stainless steel double-layer standard sieve, which comprises an upper frame body, wherein the bottom side of the upper frame body is connected with a base frame body, a sieve mesh is arranged on the inner side surface of the base frame body, the sieve mesh comprises a working net and a supporting net which is positioned below the working net and is tightly attached to the working net, the working net adopts a filter screen with 300-635 meshes, and sealant is arranged at the joint of the working net, the supporting net and the base frame body.

Although the standard sieve can have high sealing performance, the structural strength of the bottom of the standard sieve is insufficient and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The object of the present application is to solve the above-mentioned technical problems and to provide a standard screen having a high structural strength.

The application provides a double-deck standard sieve includes:

an outer frame body;

an inner frame body;

screening a screen;

the outer frame body comprises a reinforcing protrusion, an outer reducing portion and a lower clamping portion, the inner frame body comprises an upper clamping portion and an inner supporting protrusion, and the screen is arranged between the upper clamping portion and the lower clamping portion.

The inner frame body is pressed into the outer frame body under the action of pressure of the press machine, the inner wall face of the inner support bulge and the inner wall face of the outer frame body are abutted, so that tight connection between the inner frame body and the outer frame body is ensured, the connection stability between the outer frame body and the inner frame body is improved, the screen is arranged between the lower clamping portion and the upper clamping portion, the standard frames can be stacked stably through the outer diameter reducing portion, the reinforcing bulge of the outer frame body protrudes outwards, the cross section of the reinforcing bulge is arc-shaped, the structural strength of the outer frame body is increased by the reinforcing bulge, the outer frame body has higher bearing performance, and the outer frame body is not prone to deformation when radial impact is received, the service life of the standard sieve is prolonged, when the standard sieve is stacked mutually, the limiting function is realized through the outer diameter reducing portion, and the stacking is more stable.

During installation, the openings of the outer frame body and the inner frame body are inverted downwards, the screen is firstly arranged on the upper clamping portion, the inner frame body is arranged on the inner frame body on the outer frame body, pre-compression is carried out through a press machine, the screen is tensioned and clamped between the outer frame body and the inner supporting bulges, then glue is arranged at the position where the screen abuts against the upper clamping portion, and then the glue is compressed through the press machine, so that the screen is clamped between the lower clamping portion and the upper clamping portion.

Furthermore, the outer diameter reduction part is connected with the lower clamping part through a bending part.

Make outer reducing portion and lower clamping part body coupling through the portion of bending, guarantee the structural strength of outer frame body bottom, increase the bearing performance of outer frame body, the bottom non-deformable of outer frame body when standard sieve bears great pressure increases the life of standard sieve.

Furthermore, a curled edge is arranged at the upper end of the inner frame body, a gap is formed between the curled edge and the inner frame body, and the upper end of the outer frame body is inserted into the gap.

The turn-up passes through stamping process machine-shaping, and the back is installed to the outer frame body in the inner frame body, makes the upper end of outer frame body peg graft in the clearance, through the turn-up be convenient for take of standard sieve to and the separation of the standard sieve that stacks of being convenient for, peg graft in the clearance through the upper end of outer frame body, appear cutting when preventing the upper end edge of outer frame body from using, improve the safety in utilization.

Further, the screen includes:

warp yarns;

a weft;

wherein, the screen is woven by warps and wefts.

The screen cloth is woven through warp, weft and forms, and warp, weft adopt metal silk such as iron wire, have higher structural strength and life.

Furthermore, lower clamping part is provided with first arch, upper clamping part is provided with the second arch, first arch and the protruding adaptation of second, the both sides of screen cloth are arranged respectively in to first arch, second arch.

The first bulges and the second bulges are matched with each other, 3-4 first bulges and second bulges are uniformly distributed around the axis of the standard sieve, the directions of the first bulges and the second bulges are the same, and the first bulges and the second bulges are upwards or downwards raised at the same time, so that the connection stability between the screen and the outer frame body and between the screen and the inner frame body is improved through the first bulges and the second bulges.

The beneficial effect of this application is:

1. the reinforcing protrusions increase the structural strength of the outer frame body, so that the outer frame body has higher bearing performance, is not easy to deform when being impacted radially, and prolongs the service life of the standard sieve.

2. Make the stacking that standard frame can be stable each other through outer reducing portion, when standard sieve stacked each other, realized limit function through outer reducing portion, make and stack more stably.

3. The standard sieve taking device has the advantages that the standard sieve taking device is convenient to take through the turned edge, the standard sieve stacked conveniently is separated, the upper end of the outer frame body is inserted into the gap, the cutting of the upper end edge of the outer frame body during use is prevented, and the use safety is improved.

Drawings

FIG. 1 is a schematic structural view of a standard screen of the present application;

FIG. 2 is an isometric view of a standard screen of the present application;

FIG. 3 is a schematic structural view of a screen according to the present application;

reference numeral, 100, outer frame; 110. a reinforcing protrusion; 120. an outer diameter reducing part; 130. a lower clamping portion; 131. a first protrusion; 140. a bending part; 200. an inner frame body; 210. an upper clamping portion; 211. a second protrusion; 220. curling; 221. a gap; 230. an inner support boss; 300. screening a screen; 310. warp threads; 320. and (4) a weft.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The portable server provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings by specific embodiments and application scenarios thereof.

Example 1:

as shown in fig. 1 and 2, the present application provides a double-layer standard screen, including:

an outer frame body 100;

an inner frame body 200;

a screen 300;

the outer frame 100 includes a reinforcing protrusion 110, an outer diameter-reducing portion 120, and a lower clamping portion 130, the inner frame 200 includes an upper clamping portion 210, and the screen 300 is disposed between the upper clamping portion 210 and the lower clamping portion 130.

The inner frame body 200 is pressed into the outer frame body 100 under the pressure action of the press machine, the inner support bulge 230 is abutted against the inner wall surface of the outer frame body 100, so that tight connection between the inner frame body 200 and the outer frame body 100 is ensured, the connection stability between the outer frame body 100 and the inner frame body 200 is improved, the screen 300 is arranged between the lower clamping part 130 and the upper clamping part 210, standard frames can be stacked stably through the outer reducing part 120, the reinforcing bulge 110 of the outer frame body 100 protrudes outwards, the cross section of the reinforcing bulge 110 is arc-shaped, the structural strength of the outer frame body 100 is increased by the reinforcing bulge 110, the outer frame body 100 has higher bearing performance, the standard frames are not prone to deformation when being impacted in the radial direction, the service life of the standard screen is prolonged, and when the standard screens are stacked mutually, the limiting function is realized through the outer reducing part 120, and the stacking is more stable.

When the screen cloth is installed, the outer frame body 100 and the inner frame body 200 are inverted with the openings facing downward, the screen cloth 300 is firstly placed on the upper clamping portion 210, then the inner frame body 200 is placed on the outer frame body 100 and the inner frame body 200, pre-compression is performed through a press machine, the screen cloth 300 is tensioned and clamped between the outer frame body 100 and the inner supporting protrusions 230, glue is then placed at a position where the screen cloth 300 abuts against the upper clamping portion 210, and then compression is performed through a press machine, so that the screen cloth 300 is clamped between the lower clamping portion 130 and the upper clamping portion 210.

The outer frame 100, the inner frame 200, and the mesh 300 are made of one of an alloy material such as stainless steel, copper alloy, and aluminum alloy, and a metal material such as copper, iron, and aluminum.

Further, a curled edge 220 is disposed at the upper end of the inner frame 200, a gap 221 is disposed between the curled edge 220 and the inner frame 200, and the upper end of the outer frame 100 is inserted into the gap 221.

The curled edge 220 is formed by a stamping process, after the inner frame body 200 is mounted on the outer frame body 100, the upper end of the outer frame body 100 is inserted into the gap 221, the curled edge 220 is convenient for taking a standard sieve and separating a stacked standard sieve, and the upper end of the outer frame body 100 is inserted into the gap 221, so that the upper end edge of the outer frame body 100 is prevented from being cut in use, and the use safety is improved.

Example 2:

as shown in fig. 1, the present embodiment provides a double-layer standard screen, which includes the above technical features, and further, the outer diameter reduction portion 120 is connected to the lower clamping portion 130 through a bending portion 140.

The outer diameter reducing part 120 and the lower clamping part 130 are integrally connected through the bending part 140, the structural strength of the bottom of the outer frame body 100 is guaranteed, the bearing performance of the outer frame body 100 is improved, the bottom of the outer frame body 100 is not prone to deformation when a standard sieve bears large pressure, and the service life of the standard sieve is prolonged.

Example 3:

as shown in fig. 2 and 3, the present embodiment provides a double-layer standard screen, which includes the above technical features, and further includes:

warp threads 310;

weft threads 320;

wherein, the screen 300 is woven by warps 310 and wefts 320.

The screen 300 is woven by the warps 310 and the wefts 320, and the warps 310 and the wefts 320 are made of metal wires such as iron wires, so that the screen has high structural strength and long service life.

The mesh is formed by weaving the warp 310 and the weft 320, the size of the mesh can be controlled by the weaving density of the warp 310 and the weft 320, the mesh is large when the warp 310 and the weft 320 are made of metal wires such as iron wires, and composite fibers can be used as the material of the warp 310 and the weft 320 if the material is small.

Example 4:

as shown in fig. 1, in addition to the above technical features, the present application provides a double-layer standard sieve, and further, the lower clamping portion 130 is provided with a first protrusion 131, the upper clamping portion 210 is provided with a second protrusion 211, the first protrusion 131 is adapted to the second protrusion 211, and the first protrusion 131 and the second protrusion 211 are respectively disposed on two sides of the sieve 300.

The first protrusions 131 and the second protrusions 211 are matched with each other, 3-4 first protrusions 131 and second protrusions 211 are uniformly distributed around the axis of the standard sieve, the protrusion directions of the first protrusions 131 and the second protrusions 211 are the same, and the first protrusions 131 and the second protrusions 211 protrude upwards or downwards at the same time, so that the connection stability between the sieve screen 300 and the outer frame body 100 and between the sieve screen and the inner frame body 200 is improved through the first protrusions 131 and the second protrusions 211.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. A double deck standard screen, comprising:

an outer frame (100);

an inner frame (200);

a screen (300);

the outer frame body (100) comprises a reinforcing protrusion (110), an outer reducing portion (120) and a lower clamping portion (130), the inner frame body (200) comprises an upper clamping portion (210) and an inner supporting protrusion (230), and the screen (300) is arranged between the upper clamping portion (210) and the lower clamping portion (130).

2. The double deck standard screen of claim 1, wherein the outer reduced diameter portion (120) is connected to the lower clamping portion (130) by a bend (140).

3. The double-deck standard screen of claim 1, wherein the upper end of the inner frame (200) is provided with a rolled edge (220), a gap (221) is provided between the rolled edge (220) and the inner frame (200), and the upper end of the outer frame (100) is inserted into the gap (221).

4. The double-deck standard screen of claim 1, wherein the screen mesh (300) comprises:

a warp (310);

a weft (320);

wherein the screen (300) is woven by warp (310) and weft (320).

5. The double-deck standard screen of claim 1, wherein the lower clamping portion (130) is provided with a first protrusion (131), the upper clamping portion (210) is provided with a second protrusion (211), the first protrusion (131) is matched with the second protrusion (211), and the first protrusion (131) and the second protrusion (211) are respectively arranged on two sides of the screen (300).

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